scummvm/configure

#!/bin/sh
#
# configure -- custom configure script for ScummVM.
#
# ScummVM is the legal property of its developers, whose names
# are too numerous to list here. Please refer to the COPYRIGHT
# file distributed with this source distribution.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

set -a

# NLS nuisances.
LC_ALL=C
LANGUAGE=C

# Save the current environment variables for next runs
SAVED_CONFIGFLAGS=$@
SAVED_AR=$AR
SAVED_AS=$AS
SAVED_ASFLAGS=$ASFLAGS
SAVED_CPPFLAGS=$CPPFLAGS
SAVED_CXX=$CXX
SAVED_CXXFLAGS=$CXXFLAGS
SAVED_DWP=$DWP
SAVED_LD=$LD
SAVED_LDFLAGS=$LDFLAGS
SAVED_PKG_CONFIG_LIBDIR=${PKG_CONFIG_LIBDIR:-unset}
SAVED_RANLIB=$RANLIB
SAVED_SDL_CONFIG=$SDL_CONFIG
SAVED_STRIP=$STRIP
SAVED_WINDRES=$WINDRES
SAVED_WINDRESFLAGS=$WINDRESFLAGS

# Use environment vars if set
CXXFLAGS="$CXXFLAGS $CPPFLAGS"
PLUGIN_LDFLAGS=$LDFLAGS

# Backslashes into forward slashes:
# The following OS/2 specific code is performed to deal with handling of backslashes by ksh.
# Borrowed from the Sane configure script

if test "$ac_emxsupport" != "no" -a "$ac_emxsupport" != "NO"; then
	ac_save_IFS="$IFS"
	IFS="\\"
	ac_TEMP_PATH=
	for ac_dir in $PATH; do
		IFS=$ac_save_IFS
		if test -z "$ac_TEMP_PATH"; then
			ac_TEMP_PATH="$ac_dir"
		else
			ac_TEMP_PATH="$ac_TEMP_PATH/$ac_dir"
		fi
	done
	PATH="$ac_TEMP_PATH"
	unset ac_TEMP_PATH
fi

set_var() {
	eval ${1}='${2}'
}

get_var() {
	eval echo \$${1}
}

append_var() {
	VAR=${1}
	shift
	if eval test -z \"\$${VAR}\" ; then
		eval ${VAR}='$@'
	else
		eval ${VAR}=\"\$${VAR} \"'$@'
	fi
}

prepend_var() {
	VAR=${1}
	shift
	if eval test -z \"\$${VAR}\" ; then
		eval ${VAR}='$@'
	else
		eval ${VAR}='$@'\" \$${VAR}\"
	fi
}

# Add an engine: id name build subengines base-games dependencies
add_engine() {
	_engines="${_engines} ${1}"
	if test "${3}" = "no" ; then
		set_var _wip_engines "${_wip_engines} ${1}"
	fi
	set_var _engine_${1}_name "${2}"
	set_var _engine_${1}_build "${3}"
	set_var _engine_${1}_build_default "${3}"
	set_var _engine_${1}_subengines "${4}"
	set_var _engine_${1}_base "${5}"
	set_var _engine_${1}_deps "${6}"
	for sub in ${4}; do
		set_var _engine_${sub}_sub "yes"
		set_var _engine_${sub}_parent "${1}"
	done
}

# Add a feature: id name settings-list
add_feature() {
	set_var _feature_${1}_name "${2}"
	# This is a list of settings, where one must be "yes" for the feature to
	# be enabled
	set_var _feature_${1}_settings "${3}"
}

_srcdir=`dirname $0`

# Read list of engines
for i in $_srcdir/engines/*/configure.engine; do
	. "$i"
done

#
# Default settings
#
# Default lib behavior yes/no/auto
_sdl=no
_ogg=auto
_vorbis=auto
_sdlnet=auto
_libcurl=auto
_enet=yes
_tremor=auto
_tremolo=no
_flac=auto
_mad=auto
_opl2lpt=no
_retrowave=auto
_alsa=auto
_seq_midi=auto
_sndio=auto
_timidity=auto
_zlib=auto
_mpeg2=auto
_a52=auto
_sparkle=auto
_osxdockplugin=auto
_jpeg=auto
_png=auto
_gif=auto
_theoradec=auto
_vpx=auto
_faad=auto
_fluidsynth=auto
_fluidlite=auto
_opengl_mode=auto
_opengl_game_classic=auto
_opengl_game_shaders=auto
_tinygl=yes
_readline=auto
_freetype2=auto
_taskbar=auto
_updates=no
_libunity=auto
_dialogs=auto
_tts=auto
_gtk=auto
_fribidi=auto
_discord=auto
_test_cxx11=no
# Default option behavior yes/no
_debug_build=auto
_release_build=auto
_optimizations=auto
_verbose_build=no
_text_console=no
_mt32emu=yes
_lua=yes
_build_scalers=yes
_build_hq_scalers=yes
_build_edge_scalers=yes
_build_aspect=yes
_enable_prof=no
_enable_asan=no
_enable_tsan=no
_enable_ubsan=no
_bink=yes
_cloud=auto
_pandoc=no
_curl=yes
_lld=no
_mold=no
_gold=yes
# Default vkeybd/eventrec options
_vkeybd=no
_eventrec=no
# GUI translation options
_translation=yes
# Default platform settings
_backend=sdl
_16bit=auto
_highres=auto
_savegame_timestamp=auto
_dynamic_modules=no
_elf_loader=no
_plugins_default=static
_plugin_prefix=
_plugin_suffix=
_nasm=auto
_optimization_level=
_default_optimization_level=-O2
_nuked_opl=yes
_builtin_resources=yes
_windows_console=yes
_windows_unicode=yes
_cygwin_build=no
# Default commands
_ranlib=ranlib
_strip=strip
_ar="ar cr"
_as="as"
_dwp=dwp
_windres=windres
_ldd=ldd
_stagingpath="staging"
_amigaospath="install"
_morphospath="PROGDIR:"
_staticlibpath=
_xcodetoolspath=
_sparklepath=
_pkgconfig=pkg-config
_sdlconfig=sdl2-config
_libcurlconfig=curl-config
_freetypeconfig=freetype-config
_freetype_found="false"
_sdlpath="$PATH"
_freetypepath="$PATH"
_libcurlpath="$PATH"
_nasmpath="$PATH"
NASMFLAGS=""
NASM=""
_tainted_build=no
_pandocformat="default"
_pandocext="default"
_manualversion="latest"
# Detection features to be linked into executable or not
_detection_features_static=yes
_detection_features_full=yes
# The following variables are automatically detected, and should not
# be modified otherwise. Consider them read-only.
_posix=no
_has_posix_spawn=no
_has_fseeko_offt_64=no
_has_fseeko64=no
_endian=unknown
_need_memalign=yes
_have_x86=no
_have_amd64=no

# Add (virtual) features
add_feature 16bit "16bit color" "_16bit"
add_feature bink "Bink" "_bink"
add_feature cloud "cloud" "_cloud"
add_feature faad "libfaad" "_faad"
add_feature flac "FLAC" "_flac"
add_feature freetype2 "FreeType2" "_freetype2"
add_feature highres "high resolution" "_highres"
add_feature mad "MAD" "_mad"
add_feature jpeg "JPEG" "_jpeg"
add_feature mpeg2 "mpeg2" "_mpeg2"
add_feature opengl_game_shaders "OpenGL with shaders" "_opengl_game_shaders"
add_feature png "PNG" "_png"
add_feature gif "GIF" "_gif"
add_feature theoradec "libtheoradec" "_theoradec"
add_feature tinygl "TinyGL" "_tinygl"
add_feature vpx "libvpx" "_vpx"
add_feature vorbis "Vorbis file support" "_vorbis _tremor"
add_feature zlib "zlib" "_zlib"
add_feature lua "lua" "_lua"
add_feature fribidi "FriBidi" "_fribidi"
add_feature test_cxx11 "Test C++11" "_test_cxx11"

# Directories for installing ScummVM.
# This list is closely based on what GNU autoconf does,
# although the default value for datadir differs.
# Like GNU autoconf, we distinguish datadir and datarootdir
# to make it possible to change e.g. the location of the
# man pages independently of that of the engine data files,
# which are placed inside $datadir/scummvm
prefix=NONE
exec_prefix=NONE
bindir='${exec_prefix}/bin'
libdir='${exec_prefix}/lib'
datarootdir='${prefix}/share'
datadir='${datarootdir}/scummvm'
mandir='${datarootdir}/man'
docdir='${datarootdir}/doc/scummvm'
#localedir='${datarootdir}/locale'

# For cross compiling
_host=""
_host_cpu=""
_host_vendor=""
_host_os=""
_host_alias=""

_port_mk="ports.mk"

# Use temp files in the build directory
TMPO=./scummvm-conf
TMPC=${TMPO}.cpp
TMPLOG=config.log

cc_check_no_clean() {
	echo >> "$TMPLOG"
	cat "$TMPC" >> "$TMPLOG"
	echo >> "$TMPLOG"
	echo "$CXX $LDFLAGS $CXXFLAGS $TMPC -o $TMPO$HOSTEXEEXT $@" >> "$TMPLOG"
	rm -f "$TMPO$HOSTEXEEXT"
	if test "-c" = "$*" ; then
		( $CXX $CXXFLAGS "$TMPC" -o "$TMPO$HOSTEXEEXT" "$@" ) >> "$TMPLOG" 2>&1
	else
		( $CXX $LDFLAGS $CXXFLAGS "$TMPC" -o "$TMPO$HOSTEXEEXT" "$@" ) >> "$TMPLOG" 2>&1
	fi
	TMPR="$?"
	echo "return code: $TMPR" >> "$TMPLOG"
	echo >> "$TMPLOG"
	return "$TMPR"
}

cc_check_clean() {
	rm -rf $TMPC $TMPO $TMPO.o $TMPO.dwo $TMPO.dSYM $TMPO$HOSTEXEEXT "$@"
}

cc_check() {
	cc_check_no_clean "$@"
	TMPR="$?"
	cc_check_clean
	return "$TMPR"
}

cc_check_define() {
cat > $TMPC << EOF
int main(void) {
	#ifndef $1
	syntax error
	#endif
	return 0;
}
EOF
	cc_check -c
	return $?
}

gcc_get_define() {
	echo "" | $CXX -dM -E - | grep -F "$1" | head -n1 | cut -d ' ' -f 3-
}

#
# Function to provide echo -n for bourne shells that don't have it
#
echo_n() {
	printf "$@"
}

echocheck() {
	echo_n "Checking for $@... "
}

# Add a line of data to config.mk.
add_line_to_config_mk() {
	_config_mk_data="$_config_mk_data"'
'"$1"
}

# Add a line of data to config.h.
add_line_to_config_h() {
	_config_h_data="$_config_h_data"'
'"$1"
}

# Conditionally add a line of data to config.h. Takes two parameters:
# The first one can be set to 'no' to "comment out" the line, i.e.
# make it ineffective, use 'yes' otherwise.
# The second param is the line to insert.
add_to_config_h_if_yes() {
	if test "$1" = yes ; then
		add_line_to_config_h "$2"
	else
		add_line_to_config_h "/* $2 */"
	fi
}

# Conditionally add a line of data to config.mk. Takes two parameters:
# The first one can be set to 'no' to "comment out" the line, i.e.
# make it ineffective, use 'yes' otherwise.
# The second param is the line to insert.
add_to_config_mk_if_yes() {
	if test "$1" = yes ; then
		add_line_to_config_mk "$2"
	else
		add_line_to_config_mk "# $2"
	fi
}

# Conditionally add a '#define' line to config.h. Takes two parameters:
# The first one can be set to 'yes' or 'no'. If 'yes' is used, then
# the line "#define $2" is added to config.h, otherwise "#undef $2".
define_in_config_h_if_yes() {
	if test "$1" = yes ; then
		add_line_to_config_h "#define $2"
	else
		add_line_to_config_h "#undef $2"
	fi
}

# Conditionally add definitions to config.h and config.mk. Takes two parameters:
# The first one can be set to 'yes' or 'no'. If 'yes' is used, then
# the line "#define $2" is added to config.h and "$2 = 1" to config.mk.
# Otherwise "#undef $2" is added to config.h and "# $2 = 1" to config.mk
define_in_config_if_yes() {
	if test "$1" = yes ; then
		add_line_to_config_h "#define $2"
		add_line_to_config_mk "$2 = 1"
	else
		add_line_to_config_h "#undef $2"
		add_line_to_config_mk "# $2 = 1"
	fi
}

define_in_config_if_no() {
	if test "$1" = no ; then
		add_line_to_config_h "#define $2"
		add_line_to_config_mk "$2 = 1"
	else
		add_line_to_config_h "#undef $2"
		add_line_to_config_mk "# $2 = 1"
	fi
}

#
# Determine sdl-config
#
# TODO: small bit of code to test sdl usability
find_sdlconfig() {
	echo_n "Looking for sdl-config... "
	sdlconfigs="$SDL_CONFIG:$_sdlconfig:sdl2-config:sdl12-config:sdl11-config:sdl-config"
	_sdlconfig=

	IFS="${IFS=   }"; ac_save_ifs="$IFS"; IFS="$SEPARATOR"
	for path_dir in $_sdlpath; do
		#reset separator to parse sdlconfigs
		IFS=":"
		for sdlconfig in $sdlconfigs; do
			if test -f "$path_dir/$sdlconfig" ; then
				_sdlconfig="$path_dir/$sdlconfig"
				echo $_sdlconfig
				# break at first sdl-config found in path
				break 2
			fi
		done
	done

	IFS="$ac_save_ifs"

	if test -z "$_sdlconfig"; then
		echo "none found!"
		exit 1
	fi
}

#
# Determine freetype-config
#
find_freetypeconfig() {
	echo_n "Looking for freetype-config... "
	freetypeconfigs="$_freetypeconfig"
	_freetypeconfig=

	IFS="${IFS=   }"; ac_save_ifs="$IFS"; IFS="$SEPARATOR"
	for path_dir in $_freetypepath; do
		#reset separator to parse freetypeconfigs
		IFS=":"
		for freetypeconfig in $freetypeconfigs; do
			if test -f "$path_dir/$freetypeconfig" ; then
				_freetypeconfig="$path_dir/$freetypeconfig"
				echo $_freetypeconfig
				# Save the prefix
				_freetypepath=$path_dir
				if test `basename $path_dir` = bin ; then
					_freetypepath=`dirname $path_dir`
				fi
				# break at first freetype-config found in path
				break 2
			fi
		done
	done

	IFS="$ac_save_ifs"

	if test -z "$_freetypeconfig"; then
		echo "none found!"
	fi
}

#
# Determine curl-config
#
find_libcurlconfig() {
	echo_n "Looking for curl-config... "
	libcurlconfigs="$_libcurlconfig"
	_libcurlconfig=

	IFS="${IFS=   }"; ac_save_ifs="$IFS"; IFS="$SEPARATOR"
	for path_dir in $_libcurlpath; do
		#reset separator to parse sdlconfigs
		IFS=":"
		for libcurlconfig in $libcurlconfigs; do
			if test -f "$path_dir/$libcurlconfig" ; then
				_libcurlconfig="$path_dir/$libcurlconfig"
				echo $_libcurlconfig
				# Save the prefix
				_libcurlpath=$path_dir
				if test `basename $path_dir` = bin ; then
					_libcurlpath=`dirname $path_dir`
				fi
				# break at first curl-config found in path
				break 2
			fi
		done
	done

	IFS="$ac_save_ifs"

	if test -z "$_libcurlconfig"; then
		echo "none found!"
	fi
}

#
# Determine extension used for executables
#
get_system_exe_extension() {
	case $1 in
	riscos)
		_exeext=",e1f"
		;;
	3ds | dreamcast | ds | gamecube | n64 | psp | switch | wii)
		_exeext=".elf"
		;;
	gph-linux)
		_exeext=".gph"
		;;
	kolibrios | kos32)
		_exeext=".dll"
		;;
	mingw* | *os2-emx)
		_exeext=".exe"
		;;
	mint)
		if test "$_backend" = "atari"; then
			# ATARI backend
			_exeext=".ttp"
		else
			# SDL backend
			_exeext=".gtp"
		fi
		;;
	emscripten)
		_exeext=".html"
		;;
	*)
		_exeext=""
		;;
	esac
}

#
# Generic options functions
#

# Show the configure help line for an option
option_help() {
	option=$(echo "${3:---}${1}                       " | sed -e "s/\(.\{23\}\).*/\1/" -e "s/_/-/g")
	echo "  ${option}  ${2}"
}

# Show an error about an unknown option
option_error() {
	echo "error: unrecognized option: $ac_option
Try \`$0 --help' for more information." >&2
	exit 1
}

# Show an error about an unknown engine
engine_option_error() {
	echo "error: unrecognized engine: $1
Try \`$0 --help' for more information." >&2
	exit 1
}

# Show an error about an invalid subengine option
subengine_option_error() {
	echo "error: this option is invalid for the subengine $1: $ac_option
Try \`$0 --help' for more information." >&2
	exit 1
}


#
# Engine handling functions
#

# Get the name of the engine
get_engine_name() {
	get_var _engine_$1_name
}

# Will this engine be built?
get_engine_build() {
	get_var _engine_$1_build
}

# Was this engine set to be built by default?
get_engine_build_default() {
	get_var _engine_$1_build_default
}

# Get the subengines
get_engine_subengines() {
	get_var _engine_$1_subengines
}

# Ask if this is a subengine
check_is_subengine() {
	if test -z "$(get_var _engine_$1_sub)" ; then
		return 1
	fi
	return 0
}

# Get a subengine's parent (undefined for non-subengines)
get_subengine_parent() {
	get_var _engine_$1_parent
}

# Enable *all* engines
engine_enable_all() {
	for engine in $_engines; do
		set_var _engine_${engine}_build "yes"
	done
}

# Disable *all* engines
engine_disable_all() {
	for engine in $_engines; do
		set_var _engine_${engine}_build "no"
	done
}

# Enable all unstable engines
engine_enable_all_unstable() {
	for engine in $_engines; do
		engine_build_default=`get_engine_build_default $engine`
		if test $engine_build_default = no ; then
			set_var _engine_${engine}_build "yes"
		fi
	done
}

# Disable all unstable engines
engine_disable_all_unstable() {
	for engine in $_engines; do
		engine_build_default=`get_engine_build_default $engine`
		if test $engine_build_default = no ; then
			set_var _engine_${engine}_build "no"
		fi
	done
}

# Enable the given engine
engine_enable() {
	# Get the parameter
	if ( echo $1 | grep ':' ) 2> /dev/null > /dev/null ; then
		eng=`echo $1 | cut -d ':' -f 1`
		opt=`echo $1 | cut -d ':' -f 2`
	else
		eng=$1
		opt=yes
	fi
	engine=`echo $eng | sed 's/-/_/g'`

	# Filter the parameter for the subengines
	if check_is_subengine ${engine} ; then
		if test "$opt" != "yes" ; then
			subengine_option_error ${engine}
			return
		fi
		parent=`get_subengine_parent ${engine}`
		if test `get_engine_build ${parent}` = "no" ; then
			set_var _engine_${parent}_build "yes"
		fi
	fi

	if test "$opt" != "static" -a "$opt" != "dynamic" -a "$opt" != "yes" ; then
		option_error
		return
	fi

	subengines=
	if test "${engine%_all}" != "${engine}" ; then
		engine="${engine%_all}"
		subengines=$(get_engine_subengines ${engine})
		if test "$subengines" = "" ; then
			engine_option_error "${engine}*"
			return
		fi
	fi

	if test "`get_engine_name ${engine}`" = "" ; then
		engine_option_error ${engine}
		return
	fi

	set_var _engine_${engine}_build "$opt"
	for subengine in $subengines ; do
		set_var _engine_${subengine}_build "$opt"
	done
}

# Disable the given engine
engine_disable() {
	# Filter malformed options
	if ( echo $1 | grep '=' ) 2> /dev/null > /dev/null ; then
		option_error
		return
	fi

	engine=`echo $1 | sed 's/-/_/g'`
	if test "`get_engine_name ${engine}`" != "" ; then
		set_var _engine_${engine}_build "no"
	else
		engine_option_error ${engine}
	fi
}

# Show the configure help line for a given engine
show_engine_help() {
	name=`get_engine_name $1`
	option_help "${1}" "${name} engine" "  "
	for sub in `get_engine_subengines $1`; do
		show_subengine_help $sub $1
	done
}

# Show the configure help line for a given subengine
show_subengine_help() {
	name=`get_engine_name $1`
	parent=`get_engine_name $2`
	option_help "- ${1}" "${name} in ${parent} engine" "  "
}

# Copy first argument to second one if they are different. Otherwise, delete the first one.
# Touch the optional third argument on change
copy_if_changed() {
	if cmp -s $1 $2; then
		rm -f $1
	else
		mv -f $1 $2
		if test -n "$3" ; then
			touch "$3"
		fi
	fi
}

#
# Check any parameters we received
#
# TODO:
# * Change --disable-mad / --enable-mad to the way it's done in autoconf:
#  That is, --without-mad / --with-mad=/prefix/to/mad. Useful for people
#  who have Mad/Vorbis/ALSA installed in a non-standard locations.
#

for parm in "$@" ; do
	if test "$parm" = "--help" || test "$parm" = "-help" || test "$parm" = "-h" ; then
		for engine in $_engines; do
			if ! check_is_subengine $engine ; then
				engines_help="$engines_help`show_engine_help $engine`
"
			fi
		done
		cat << EOF

Usage: $0 [OPTIONS]...

Configuration:
  -h, --help              display this help and exit
  --backend=BACKEND       backend to build (3ds, atari, android, dc, dingux, ds, gcw0,
                          gph, iphone, ios7, ios7-arm64, maemo, n64, null, opendingux,
                          openpandora, psp, psp2, samsungtv, sdl, switch, wii) [sdl]

Installation directories:
  --prefix=PREFIX         install architecture-independent files in PREFIX
                          [/usr/local]
  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
                          [PREFIX]

By default, \`make install' will install all the files in
\`/usr/local/bin', \`/usr/local/lib' etc.  You can specify
an installation prefix other than \`/usr/local' using \`--prefix',
for instance \`--prefix=\$HOME'.

For better control, use the options below.

Fine tuning of the installation directories:
  --bindir=DIR            user executables [EPREFIX/bin]
  --libdir=DIR            object code libraries [EPREFIX/lib]
  --datarootdir=DIR       read-only arch.-independent data root [PREFIX/share]
  --datadir=DIR           read-only architecture-independent data
                          [DATAROOTDIR/scummvm]
  --mandir=DIR            man documentation [DATAROOTDIR/man]
  --docdir=DIR            documentation root [DATAROOTDIR/doc/scummvm]

Special configuration feature:
  --host=HOST             cross-compile to target HOST (arm-linux, ...)
                          special targets: 3ds for Nintendo 3DS
                                           android-arm-v7a for Android ARMv7-A (armeabi-v7a)
                                           android-arm64-v8a for Android ARMv8-A (arm64-v8a)
                                           android-x86 for Android x86
                                           android-x86_64 for Android x86_64
                                           caanoo for Caanoo
                                           dingux for Dingux
                                           raspberrypi for Raspberry Pi
                                           dreamcast for Sega Dreamcast
                                           ds for Nintendo DS
                                           gamecube for Nintendo GameCube
                                           gcw0 for GCW Zero
                                           gp2x for GP2X
                                           gp2xwiz for GP2X Wiz
                                           iphone for Apple iPhone (iOS <= 6)
                                           ios7 for Apple iPhone / iPad (iOS >= 7)
                                           ios7-arm64 for Apple iPhone / iPad (iOS >= 7, 64-bit)
                                           kos32 for Kolibri OS
                                           maemo for Nokia Maemo
                                           miyoo for 1st generation Miyoo
                                           miyoomini for Miyoo Mini
                                           n64 for Nintendo 64
                                           opendingux-gcw0 for GCW0 with Opendingux Beta
                                           opendingux-lepus for Lepus with Opendingux Beta
                                           opendingux-rs90 for RS90 and RG99 with Opendingux Beta
                                           openpandora for OpenPandora
                                           ouya for OUYA
                                           ps3 for PlayStation 3
                                           psp2 for PlayStation Vita
                                           psp for PlayStation Portable
                                           samsungtv for Samsung TV
                                           switch for Nintendo Switch
                                           tvos for Apple TV (tvOS 9.0+)
                                           wasm32-unknown-emscripten for WebAssembly
                                           wii for Nintendo Wii

Game engines:
  --enable-all-engines     enable all engines, including those which are
                           broken or unsupported
  --disable-all-engines    disable all engines
  --enable-all-unstable-engines     enable the engines which are
                                    broken or unsupported
  --disable-all-unstable-engines    disable only the engines which are
                                    broken or unsupported
  --enable-engine=<engine name>[,<engine name>...] enable engine(s) listed
  --disable-engine=<engine name>[,<engine name>...] disable engine(s) listed
  --enable-engine-static=<engine name>[,<engine name>...]
      enable engine(s) listed as static builtin (when plugins are enabled)
  --enable-engine-dynamic=<engine name>[,<engine name>...]
      enable engine(s) listed as dynamic plugin (when plugins are enabled)
    The values of <engine name> for these options are as follows:
$engines_help
Optional Features:
  --enable-static          build a static binary instead of using shared objects
  --enable-detection-static  build detection features into executable (default)
  --enable-detection-dynamic build detection features into a library
  --disable-detection-full add detection only for the engines which were enabled
  --disable-debug          disable building with debugging symbols
  --enable-Werror          treat warnings as errors
  --enable-release         enable building in release mode (this activates
                           optimizations)
  --enable-release-mode    enable building in release mode (without optimizations)
  --enable-optimizations   enable optimizations
  --enable-asan            enable Address Sanitizer for memory-related debugging
  --enable-tsan            enable Thread Sanitizer for thread-related debugging
  --enable-ubsan           enable Undefined Behavior Sanitizer for undefined-behavior-related debugging
  --enable-profiling       enable profiling
  --enable-plugins         enable the support for dynamic plugins
  --default-dynamic        make plugins dynamic by default
  --disable-mt32emu        don't enable the integrated MT-32 emulator
  --disable-lua            don't enable Lua support
  --disable-nuked-opl      don't build Nuked OPL driver
  --disable-16bit          don't enable 16bit color support
  --disable-highres        don't enable support for high resolution engines >320x240
  --disable-savegame-timestamp don't use timestamps for blank savegame descriptions
  --disable-scalers        exclude scalers
  --disable-hq-scalers     exclude HQ2x and HQ3x scalers (disables Edge scalers as well)
  --disable-edge-scalers   exclude Edge2x and Edge3x scalers
  --disable-aspect         exclude aspect ratio correction
  --disable-translation    don't build support for translated messages
  --disable-taskbar        don't build support for taskbar and launcher integration
  --disable-cloud          don't build cloud support
  --disable-system-dialogs don't build support for system dialogs
  --enable-vkeybd          build virtual keyboard support
  --enable-eventrecorder   enable event recording functionality
  --disable-eventrecorder  disable event recording functionality
  --enable-updates         build support for updates
  --enable-text-console    use text console instead of graphical console
  --enable-verbose-build   enable regular echoing of commands during build
                           process
  --enable-tts             build support for text to speech
  --disable-tts            don't build support for text to speech
  --disable-bink           don't build with Bink video support
  --opengl-mode=MODE       OpenGL (ES) mode to use for OpenGL output [auto]
                           available modes: auto for autodetection
                                            none for disabling any OpenGL usage
                                            any for runtime detection
                                            gl for forcing OpenGL
                                            gles for forcing OpenGL ES
                                            gles2 for forcing OpenGL ES 2
                           WARNING: only specify this manually if you know what
                           you are doing!
  --no-builtin-resources   do not include additional resources (e.g. engine data, fonts)
                           into the ScummVM binary
  --enable-windows-console  show console output on Windows (default)
  --disable-windows-console do not show console output on Windows
  --enable-windows-unicode  use Windows Unicode APIs (default)
  --disable-windows-unicode use Windows ANSI APIs

Optional Documentation Options:
  --with-manual-version=VERSION version to use when generating the manual (optional)
  --with-pandoc-format=FORMAT   pandoc format to use during the conversion (optional)

Optional Libraries:
  --with-alsa-prefix=DIR   prefix where alsa is installed (optional)
  --disable-alsa           disable ALSA midi sound support [autodetect]

  --with-ogg-prefix=DIR    prefix where libogg is installed (optional)
  --disable-ogg            disable Ogg support [autodetect]

  --with-vorbis-prefix=DIR prefix where libvorbis is installed (optional)
  --disable-vorbis         disable Vorbis support [autodetect]

  --with-tremor-prefix=DIR prefix where tremor is installed (optional)
  --disable-tremor         disable tremor support [autodetect]

  --with-mad-prefix=DIR    prefix where libmad is installed (optional)
  --disable-mad            disable libmad (MP3) support [autodetect]

  --with-fribidi-prefix=DIR    prefix where libfribidi is installed
  --disable-fribidi            disable libfribidi support [autodetect]

  --with-flac-prefix=DIR   prefix where libFLAC is installed (optional)
  --disable-flac           disable FLAC support [autodetect]

  --with-zlib-prefix=DIR   prefix where zlib is installed (optional)
  --disable-zlib           disable zlib (compression) support [autodetect]

  --with-mpeg2-prefix=DIR  prefix where libmpeg2 is installed (optional)
  --enable-mpeg2           enable mpeg2 codec for cutscenes [autodetect]

  --with-a52-prefix=DIR    Prefix where liba52 is installed (optional)
  --enable-a52             enable a52 codec for MPEG decoder [autodetect]

  --with-opengl-prefix=DIR      prefix where OpenGL (ES) is installed (optional)
  --disable-opengl-game         disable OpenGL (ES) support in game [autodetect]
  --disable-opengl-game-classic disable OpenGL classic support in game
  --disable-opengl-game-shaders disable use of modern OpenGL with shaders in game

  --with-jpeg-prefix=DIR   Prefix where libjpeg is installed (optional)
  --disable-jpeg           disable JPEG decoder [autodetect]

  --with-png-prefix=DIR    prefix where libpng is installed (optional)
  --disable-png            disable PNG decoder [autodetect]

  --with-gif-prefix=DIR    prefix where giflib is installed (optional)
  --disable-gif            disable GIF decoder [autodetect]

  --with-theoradec-prefix=DIR  prefix where libtheoradec is installed (optional)
  --disable-theoradec      disable Theora decoder [autodetect]

  --with-vpx-prefix=DIR    prefix where libtvpx is installed (optional)
  --disable-vpx            disable VP8/VP9 decoder [autodetect]

  --with-faad-prefix=DIR   prefix where libfaad is installed (optional)
  --disable-faad           disable AAC decoder [autodetect]

  --with-fluidsynth-prefix=DIR prefix where libfluidsynth is
                           installed (optional)
  --disable-fluidsynth     disable fluidsynth MIDI driver [autodetect]

  --with-fluidlite-prefix=DIR prefix where libfluidlite is
                           installed (optional)
  --disable-fluidlite      disable fluidlite MIDI driver [autodetect]

  --with-ieee1284-prefix=DIR prefix where libieee1284 is installed (optional)
  --enable-opl2lpt         enable OPL2LPT support

  --with-retrowave-prefix=DIR prefix where libretrowave is installed (optional)
  --enable-retrowave       enable RetroWave OPL3 support

  --with-sparkle-prefix=DIR    prefix where sparkle is installed
                           (macOS/Windows only - optional)
  --disable-sparkle        disable sparkle automatic update support
                           [macOS/Windows only - autodetect]

  --disable-osx-dock-plugin    disable the NSDockTilePlugin support
                               [macOS only - autodetect]

  --with-sdl-prefix=DIR    prefix where the SDL package is installed (optional)
                           e.g., if sdl-config script is at:
                           /opt/mxe/usr/i686-w64-mingw32.static/bin/sdl2-config
                           then you should pass:
                           '--with-sdl-prefix=/opt/mxe/usr/i686-w64-mingw32.static'

  --with-freetype2-prefix=DIR  prefix where the freetype-config script is
                               installed (optional)
  --disable-freetype2      disable freetype2 TTF library usage [autodetect]

  --with-nasm-prefix=DIR   prefix where nasm executable is installed (optional)
  --disable-nasm           disable assembly language optimizations [autodetect]

  --with-readline-prefix=DIR   prefix where readline is installed (optional)
  --disable-readline       disable readline support in text console [autodetect]

  --with-libunity-prefix=DIR   prefix where libunity is installed (optional)
  --disable-libunity       disable Unity launcher integration [autodetect]

  --with-gtk-prefix=DIR   prefix where gtk is installed (optional)
  --disable-gtk       disable GTK dialog integration [autodetect]

  --with-sndio-prefix=DIR  prefix where sndio is installed (optional)
  --disable-sndio          disable sndio MIDI driver [autodetect]

  --with-sdlnet-prefix=DIR prefix where SDL_Net is installed (optional)
  --disable-sdlnet         disable SDL_Net networking library [autodetect]

  --with-libcurl-prefix=DIR    prefix where libcurl is installed (optional)
  --disable-libcurl        disable libcurl networking library [autodetect]

  --disable-enet         don't enable ENet networking support

  --with-discord-prefix=DIR   prefix where discord-rpc is installed (optional)
  --disable-discord       disable Discord rich presence integration [autodetect]

Some influential environment variables:
  AR                 archiver command
  AS                 assembler command
  ASFLAGS            assembler flags
  CONFIGURE_NO_HOST  Ignore the cross-compile target set by the --host= option
  CPPFLAGS           C++ preprocessor flags, e.g. -I<include dir> if you have
                     headers in a nonstandard directory <include dir>
  CXX                C++ compiler command
  CXXFLAGS           C++ compiler flags
  DWP                DWARF packing utility command
  LD                 linker command
  LDFLAGS            linker flags, e.g. -L<lib dir> if you have libraries in a
                     nonstandard directory <lib dir>
  PKG_CONFIG_LIBDIR  list of directories where pkg-config '.pc' files are
                     looked up
  RANLIB             archive indexer command
  SDL_CONFIG         SDL configurer script name (not path)
  STRIP              symbol stripper command
  WINDRES            Windows resource compiler command
  WINDRESFLAGS       Windows resource compiler flags

EOF
		exit 0
	fi
done # for parm in ...


#
# If we're not showing help, greet the user and start the log file
#
echo "Running ScummVM configure..."
echo "Configure run on" `date` > $TMPLOG
cat >> $TMPLOG <<EOF
Invocation command line was:
$0 $@
Saved environment variables:
AR="$SAVED_AR" AS="$SAVED_AS" ASFLAGS="$SAVED_ASFLAGS" CPPFLAGS="$SAVED_CPPFLAGS" CXX="$SAVED_CXX" CXXFLAGS="$SAVED_CXXFLAGS" DWP="$SAVED_DWP" LD="$SAVED_LD" LDFLAGS="$SAVED_LDFLAGS" PKG_CONFIG_LIBDIR="$SAVED_PKG_CONFIG_LIBDIR" RANLIB="$SAVED_RANLIB" SDL_CONFIG="$SAVED_SDL_CONFIG" STRIP="$SAVED_STRIP" WINDRES="$SAVED_WINDRES" WINDRESFLAGS="$SAVED_WINDRESFLAGS"
EOF


for ac_option in $@; do
	case "$ac_option" in
	# Silently ignore options valid for Autotools configure.
	--build=*)                                           ;;
	--program-prefix=*)                                  ;;
	--sbindir=*)                                         ;;
	--sysconfdir=*)                                      ;;
	--includedir=*)                                      ;;
	--libexecdir=*)                                      ;;
	--localstatedir=*)                                   ;;
	--sharedstatedir=*)                                  ;;
	--infodir=*)                                         ;;
	--disable-dependency-tracking)                       ;;
	--enable-dependency-tracking)                        ;;
	# End of ignored options.
	--enable-static)              _static_build=yes      ;;
	--enable-detection-static)    _detection_features_static=yes;;
	--enable-detection-dynamic)   _detection_features_static=no;;
	--enable-detection-full)      _detection_features_full=yes;;
	--disable-detection-full)     _detection_features_full=no;;
	--disable-16bit)              _16bit=no              ;;
	--enable-highres)             _highres=yes           ;;
	--disable-highres)            _highres=no            ;;
	--disable-savegame-timestamp) _savegame_timestamp=no ;;
	--disable-scalers)            _build_scalers=no      ;;
	--disable-hq-scalers)         _build_hq_scalers=no   ;;
	--disable-edge-scalers)       _build_edge_scalers=no ;;
	--disable-aspect)             _build_aspect=no       ;;
	--enable-alsa)                _alsa=yes              ;;
	--disable-alsa)               _alsa=no               ;;
	--enable-seq-midi)            _seq_midi=yes          ;;
	--disable-seq-midi)           _seq_midi=no           ;;
	--enable-sndio)               _sndio=yes             ;;
	--disable-sndio)              _sndio=no              ;;
	--enable-timidity)            _timidity=yes          ;;
	--disable-timidity)           _timidity=no           ;;
	--enable-ogg)                 _ogg=yes               ;;
	--disable-ogg)                _ogg=no                ;;
	--enable-vorbis)              _vorbis=yes            ;;
	--disable-vorbis)             _vorbis=no             ;;
	--enable-tremor)              _tremor=yes            ;;
	--disable-tremor)             _tremor=no             ;;
	--enable-opl2lpt)             _opl2lpt=yes           ;;
	--disable-opl2lpt)            _opl2lpt=no            ;;
	--enable-retrowave)           _retrowave=yes         ;;
	--disable-retrowave)          _retrowave=no          ;;
	--enable-flac)                _flac=yes              ;;
	--disable-flac)               _flac=no               ;;
	--enable-mad)                 _mad=yes               ;;
	--disable-mad)                _mad=no                ;;
	--enable-fribidi)             _fribidi=yes           ;;
	--disable-fribidi)            _fribidi=no            ;;
	--enable-test-c++11)          _test_cxx11=yes        ;;
	--disable-test-c++11)         _test_cxx11=no         ;;
	--enable-zlib)                _zlib=yes              ;;
	--disable-zlib)               _zlib=no               ;;
	--enable-sparkle)             _sparkle=yes           ;;
	--disable-sparkle)            _sparkle=no            ;;
	--enable-osx-dock-plugin)     _osxdockplugin=yes     ;;
	--disable-osx-dock-plugin)    _osxdockplugin=no      ;;
	--enable-nasm)                _nasm=yes              ;;
	--disable-nasm)               _nasm=no               ;;
	--enable-mpeg2)               _mpeg2=yes             ;;
	--disable-mpeg2)              _mpeg2=no              ;;
	--enable-a52)                 _a52=yes               ;;
	--disable-a52)                _a52=no                ;;
	--disable-jpeg)               _jpeg=no               ;;
	--enable-jpeg)                _jpeg=yes              ;;
	--disable-png)                _png=no                ;;
	--enable-png)                 _png=yes               ;;
	--disable-gif)                _gif=no                ;;
	--enable-gif)                 _gif=yes               ;;
	--disable-theoradec)          _theoradec=no          ;;
	--enable-theoradec)           _theoradec=yes         ;;
	--disable-vpx)                _vpx=no                ;;
	--enable-vpx)                 _vpx=yes               ;;
	--disable-faad)               _faad=no               ;;
	--enable-faad)                _faad=yes              ;;
	--disable-fluidsynth)         _fluidsynth=no         ;;
	--enable-fluidsynth)          _fluidsynth=yes        ;;
	--disable-fluidlite)          _fluidlite=no          ;;
	--enable-fluidlite)           _fluidlite=yes         ;;
	--enable-readline)            _readline=yes          ;;
	--disable-readline)           _readline=no           ;;
	--enable-freetype2)           _freetype2=yes         ;;
	--disable-freetype2)          _freetype2=no          ;;
	--enable-taskbar)             _taskbar=yes           ;;
	--disable-taskbar)            _taskbar=no            ;;
	--enable-system-dialogs)      _dialogs=yes           ;;
	--disable-system-dialogs)     _dialogs=no            ;;
	--enable-sdlnet)              _sdlnet=yes            ;;
	--disable-sdlnet)             _sdlnet=no             ;;
	--enable-libcurl)             _libcurl=yes           ;;
	--disable-libcurl)            _libcurl=no            ;;
	--enable-enet)                _enet=yes              ;;
	--disable-enet)               _enet=no               ;;
	--enable-cloud)               _cloud=yes             ;;
	--disable-cloud)              _cloud=no              ;;
	--enable-lld)                 _lld=yes               ;;
	--disable-lld)                _lld=no                ;;
	--enable-mold)                _mold=yes              ;;
	--disable-mold)               _mold=no               ;;
	--enable-gold)                _gold=yes              ;;
	--disable-gold)               _gold=no               ;;
	--enable-updates)             _updates=yes           ;;
	--disable-updates)            _updates=no            ;;
	--enable-libunity)            _libunity=yes          ;;
	--disable-libunity)           _libunity=no           ;;
	--enable-tts)                 _tts=yes               ;;
	--disable-tts)                _tts=no                ;;
	--enable-gtk)                 _gtk=yes               ;;
	--disable-gtk)                _gtk=no                ;;
	--opengl-mode=*)
		_opengl_mode=`echo $ac_option | cut -d '=' -f 2`
		;;
	--disable-opengl-game)
		_opengl_game_classic=no
		_opengl_game_shaders=no
		;;
	--disable-opengl-game-classic) _opengl_game_classic=no ;;
	--disable-opengl-game-shaders) _opengl_game_shaders=no ;;
	--enable-tinygl)              _tinygl=yes            ;;
	--disable-tinygl)             _tinygl=no             ;;
	--enable-bink)                _bink=yes              ;;
	--disable-bink)               _bink=no               ;;
	--enable-discord)             _discord=yes           ;;
	--disable-discord)            _discord=no            ;;
	--enable-verbose-build)      _verbose_build=yes      ;;
	--enable-cygwin-build)       _cygwin_build=yes       ;;
	--enable-plugins)            _dynamic_modules=yes    ;;
	--default-dynamic)           _plugins_default=dynamic;;
	--enable-mt32emu)            _mt32emu=yes            ;;
	--disable-mt32emu)           _mt32emu=no             ;;
	--enable-lua)                _lua=yes                ;;
	--disable-lua)               _lua=no                 ;;
	--enable-nuked-opl)          _nuked_opl=yes          ;;
	--disable-nuked-opl)         _nuked_opl=no           ;;
	--enable-translation)        _translation=yes        ;;
	--disable-translation)       _translation=no         ;;
	--enable-vkeybd)             _vkeybd=yes             ;;
	--disable-vkeybd)            _vkeybd=no              ;;
	--enable-eventrecorder)      _eventrec=yes           ;;
	--disable-eventrecorder)     _eventrec=no            ;;
	--enable-text-console)       _text_console=yes       ;;
	--disable-text-console)      _text_console=no        ;;
	--with-fluidsynth-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		FLUIDSYNTH_CFLAGS="-I$arg/include"
		FLUIDSYNTH_LIBS="-L$arg/lib"
		;;
	--with-fluidlite-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		FLUIDLITE_CFLAGS="-I$arg/include"
		FLUIDLITE_LIBS="-L$arg/lib"
		;;
	--with-mpeg2-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		MPEG2_CFLAGS="-I$arg/include"
		MPEG2_LIBS="-L$arg/lib"
		;;
	--with-a52-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		A52_CFLAGS="-I$arg/include"
		A52_LIBS="-L$arg/lib"
		;;
	--with-alsa-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		ALSA_CFLAGS="-I$arg/include"
		ALSA_LIBS="-L$arg/lib"
		;;
	--with-sndio-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		SNDIO_CFLAGS="-I$arg/include"
		SNDIO_LIBS="-L$arg/lib"
		;;
	--with-ogg-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		OGG_CFLAGS="-I$arg/include"
		OGG_LIBS="-L$arg/lib"
		;;
	--with-vorbis-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		VORBIS_CFLAGS="-I$arg/include"
		VORBIS_LIBS="-L$arg/lib"
		;;
	--with-tremor-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		TREMOR_CFLAGS="-I$arg/include"
		TREMOR_LIBS="-L$arg/lib"
		;;
	--with-ieee1284-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		IEEE1284_CFLAGS="-I$arg/include"
		IEEE1284_LIBS="-L$arg/lib"
		;;
	--with-retrowave-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		RETROWAVE_CFLAGS="-I$arg/include"
		RETROWAVE_LIBS="-L$arg/lib"
		;;
	--with-flac-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		FLAC_CFLAGS="-I$arg/include"
		FLAC_LIBS="-L$arg/lib"
		;;
	--with-mad-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		MAD_CFLAGS="-I$arg/include"
		MAD_LIBS="-L$arg/lib"
		;;
	--with-fribidi-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		FRIBIDI_CFLAGS="-I$arg/include"
		FRIBIDI_LIBS="-L$arg/lib"
		;;
	--with-jpeg-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		JPEG_CFLAGS="-I$arg/include"
		JPEG_LIBS="-L$arg/lib"
		;;
	--with-png-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		PNG_CFLAGS="-I$arg/include"
		PNG_LIBS="-L$arg/lib"
		;;
	--with-gif-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		GIF_CFLAGS="-I$arg/include"
		GIF_LIBS="-L$arg/lib"
		;;
	--with-theoradec-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		THEORADEC_CFLAGS="-I$arg/include"
		THEORADEC_LIBS="-L$arg/lib"
		;;
	--with-vpx-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		VPX_CFLAGS="-I$arg/include"
		VPX_LIBS="-L$arg/lib"
		;;
	--with-faad-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		FAAD_CFLAGS="-I$arg/include"
		FAAD_LIBS="-L$arg/lib"
		;;
	--with-zlib-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		ZLIB_CFLAGS="-I$arg/include"
		ZLIB_LIBS="-L$arg/lib"
		;;
	--with-sparkle-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		_sparklepath=$arg
		;;
	--with-readline-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		READLINE_CFLAGS="-I$arg/include"
		READLINE_LIBS="-L$arg/lib"
		;;
	--with-libunity-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		LIBUNITY_CFLAGS="-I$arg/include"
		LIBUNITY_LIBS="-L$arg/lib"
		;;
	--with-gtk-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		GTK_CFLAGS="-I$arg/include"
		GTK_LIBS="-L$arg/lib"
		;;
	--with-sdlnet-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		SDL_NET_CFLAGS="-I$arg/include"
		SDL_NET_LIBS="-L$arg/lib"
		;;
	--with-opengl-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		OPENGL_CFLAGS="-I$arg/include"
		OPENGL_LIBS="-L$arg/lib"
		;;
	--with-discord-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		DISCORD_CFLAGS="-I$arg/include"
		DISCORD_LIBS="-L$arg/lib"
		;;
	--backend=*)
		_backend=`echo $ac_option | cut -d '=' -f 2`
		;;
	--enable-debug)
		_debug_build=yes
		;;
	--disable-debug)
		_debug_build=no
		;;
	--enable-Werror)
		append_var CXXFLAGS "-Werror"
		;;
	--enable-release-mode)
		_release_build=yes
		;;
	--disable-release-mode)
		_release_build=no
		;;
	--enable-release)
		_release_build=yes
		_optimizations=yes
		_updates=yes
		;;
	--disable-release)
		_release_build=no
		_optimizations=no
		;;
	--enable-optimizations)
		_optimizations=yes
		;;
	--disable-optimizations)
		_optimizations=no
		;;
	--enable-profiling)
		_enable_prof=yes
		;;
	--enable-asan)
		_enable_asan=yes
		;;
	--enable-tsan)
		_enable_tsan=yes
		;;
	--enable-ubsan)
		_enable_ubsan=yes
		;;
	--no-builtin-resources)
		_builtin_resources=no
		;;
	--enable-windows-console)
		_windows_console=yes
		;;
	--disable-windows-console)
		_windows_console=no
		;;
	--enable-windows-unicode)
		_windows_unicode=yes
		;;
	--disable-windows-unicode)
		_windows_unicode=no
		;;
	--with-sdl-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		_sdlpath="$arg:$arg/bin"
		;;
	--with-freetype2-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		_freetypepath="$arg:$arg/bin"
		;;
	--with-libcurl-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		_libcurlpath="$arg:$arg/bin"
		;;
	--with-nasm-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		_nasmpath="$arg:$arg/bin"
		;;
	--with-pandoc-format=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		_pandocformat="$arg"
		_pandoc=yes
		;;
	--with-manual-version=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		_manualversion="$arg"
		;;
	--with-staticlib-prefix=*)
		_staticlibpath=`echo $ac_option | cut -d '=' -f 2`
		;;
	--with-xcodetools-path=*)
		_xcodetoolspath=`echo $ac_option | cut -d '=' -f 2`
		;;
	--host=*)
		if test -z "$CONFIGURE_NO_HOST"; then
			_host=`echo $ac_option | cut -d '=' -f 2`
		else
			echo "Ignoring --host option!" >&2
		fi
		;;
	--prefix=*)
		prefix=`echo $ac_option | cut -d '=' -f 2`
		;;
	--exec-prefix=*)
		exec_prefix=`echo $ac_option | cut -d '=' -f 2`
		;;
	--bindir=*)
		bindir=`echo $ac_option | cut -d '=' -f 2`
		;;
	--libdir=*)
		libdir=`echo $ac_option | cut -d '=' -f 2`
		;;
	--datarootdir=*)
		datarootdir=`echo $ac_option | cut -d '=' -f 2`
		;;
	--datadir=*)
		datadir=`echo $ac_option | cut -d '=' -f 2`
		;;
	--mandir=*)
		mandir=`echo $ac_option | cut -d '=' -f 2`
		;;
	--docdir=*)
		docdir=`echo $ac_option | cut -d '=' -f 2`
		;;
	--enable-all-engines)
		engine_enable_all
		;;
	--disable-all-engines)
		engine_disable_all
		;;
	--enable-all-unstable-engines)
		engine_enable_all_unstable
		;;
	--disable-all-unstable-engines)
		engine_disable_all_unstable
		;;
	--enable-engine=* | --enable-engines=*)
		for engine_name in `echo $ac_option | cut -d '=' -f 2- | tr ',' '\n'`; do
			engine_enable "${engine_name}"
		done
		;;
	--enable-engine-static=* | --enable-engines-static=*)
		for engine_name in `echo $ac_option | cut -d '=' -f 2- | tr ',' '\n'`; do
			engine_enable "${engine_name}:static"
		done
		;;
	--enable-engine-dynamic=* | --enable-engines-dynamic=*)
		for engine_name in `echo $ac_option | cut -d '=' -f 2- | tr ',' '\n'`; do
			engine_enable "${engine_name}:dynamic"
		done
		;;
	--disable-engine=* | --disable-engines=*)
		for engine_name in `echo $ac_option | cut -d '=' -f 2 | tr ',' '\n'`; do
			engine_disable ${engine_name}
		done
		;;
	*)
		option_error
		;;
	esac
done

guessed_host=`$_srcdir/config.guess`
get_system_exe_extension $guessed_host
NATIVEEXEEXT=$_exeext

case $_host in
3ds)
	_host_os=3ds
	_host_cpu=arm
	_host_alias=arm-none-eabi

	test "x$prefix" = xNONE && prefix=romfs:

	datarootdir='${prefix}'
	datadir='${datarootdir}'
	docdir='${prefix}/doc'
	;;
android-arm-v7a | ouya)
	_host_os=android
	_host_cpu=arm
	_host_alias=arm-linux-androideabi
	;;
android-arm64-v8a)
	_host_os=android
	_host_cpu=aarch64
	_host_alias=aarch64-linux-android
	;;
android-x86)
	_host_os=android
	_host_cpu=i686
	_host_alias=i686-linux-android
	;;
android-x86_64)
	_host_os=android
	_host_cpu=x86_64
	_host_alias=x86_64-linux-android
	;;
arm-vfp-riscos)
	_host_os=riscos
	_host_cpu=arm
	_host_alias=arm-unknown-riscos
	datarootdir='/\<ScummVM\$$Dir\>'
	datadir='${datarootdir}/data'
	docdir='${datarootdir}/docs'
	;;
arm-*riscos)
	_host_os=riscos
	_host_cpu=arm
	_host_alias=$_host
	datarootdir='/\<ScummVM\$$Dir\>'
	datadir='${datarootdir}/data'
	docdir='${datarootdir}/docs'
	;;
raspberrypi)
	_host_os=linux
	_host_cpu=arm
	# This tuple is the one used by the official Rpi toolchain.
	# It may change in the future.
	_host_alias=arm-linux-gnueabihf
	;;
caanoo)
	_host_os=gph-linux
	_host_cpu=arm
	_host_alias=arm-none-linux-gnueabi
	;;
dingux | gcw0 | opendingux-*)
	_host_os=linux
	_host_cpu=mipsel
	_host_alias=mipsel-linux
	;;
dreamcast)
	_host_os=dreamcast
	_host_cpu=sh
	_host_alias=sh-elf
	append_var CXXFLAGS "-ml -m4-single-only"
	append_var LDFLAGS "-ml -m4-single-only"
	;;
ds)
	_host_os=ds
	_host_cpu=arm
	_host_alias=arm-none-eabi
	;;
gamecube)
	_host_os=gamecube
	_host_cpu=powerpc
	_host_alias=powerpc-eabi
	;;
gp2x)
	_host_os=gph-linux
	_host_cpu=arm
	_host_alias=arm-open2x-linux
	;;
gp2xwiz)
	_host_os=gph-linux
	_host_cpu=arm
	_host_alias=arm-open2x-linux
	;;
i586-mingw32msvc)
	_host_os=mingw32msvc
	_host_cpu=i586
	;;
iphone)
	_host_os=iphone
	_host_cpu=arm
	_host_alias=arm-apple-darwin9
	;;
ios7)
	_host_os=iphone
	_host_cpu=arm
	_host_alias=arm-apple-darwin11
	;;
ios7-arm64)
	_host_os=iphone
	# Remains of configure not knowing about arm64
	_host_cpu=aarch64
	_host_alias=arm64-apple-darwin11
	;;
kos32)
	_host_os=kolibrios
	_host_cpu=i686
	_host_alias=kos32
	;;
m68k-atari-mint)
	_host_os=mint
	_host_cpu=m68k
	_host_alias=m68k-atari-mint
	;;
maemo)
	_host_os=maemo
	_host_cpu=arm
	_host_alias=arm-none-linux-gnueabi

	# The prefix is always the same on Maemo so we hardcode the default
	# here. It is still possible to define a custom prefix which is
	# needed when packaging the app with a user-specific app ID.
	test "x$prefix" = xNONE && prefix=/opt/scummvm
	# Maemo apps are installed into app-specific directories. The
	# default directory structure of ScummVM makes no sense here so we
	# hardcode Maemo specific directories here.
	datarootdir='${prefix}/share'
	datadir=/opt/scummvm/share
	docdir='${datarootdir}/doc/scummvm'
	;;
miyoo)
	_host_os=linux
	_host_cpu=arm
	_host_alias=arm-linux
	;;
miyoomini)
	_host_os=linux
	_host_cpu=arm
	_host_alias=arm-linux-gnueabihf
	;;
n64)
	_host_os=n64
	_host_cpu=mips
	_host_alias=mips64
	;;
neuros)
	_host_os=linux
	_host_cpu=arm
	;;
openpandora)
	_host_os=linux
	_host_cpu=arm
	_host_alias=arm-angstrom-linux-gnueabi
	;;
ppc-amigaos)
	_host_os=amigaos
	_host_cpu=powerpc
	_host_alias=$_host
	;;
ppc-morphos)
	_host_os=morphos
	_host_cpu=powerpc
	_host_alias=$_host
	;;
ps3)
	_host_os=ps3
	_host_cpu=powerpc
	_host_alias=powerpc64-ps3-elf

	# The prefix is always the same on PS3 so we hardcode the default
	# here. It is still possible to define a custom prefix which is
	# needed when packaging the app with a user-specific app ID.
	test "x$prefix" = xNONE && prefix=/dev_hdd0/game/SCUM12000/USRDIR
	# PS3 apps are installed into app-specific directories. The
	# default directory structure of ScummVM makes no sense here so we
	# hardcode PS3 specific directories here.
	datarootdir='${prefix}/data'
	datadir='${datarootdir}'
	docdir='${prefix}/doc'
	;;
psp2)
	_host_os=psp2
	_host_cpu=arm
	_host_alias=arm-vita-eabi

	# The prefix is always the same on PSP2 so we hardcode the default
	# here. It is still possible to define a custom prefix which is
	# needed when packaging the app with a user-specific app ID.
	test "x$prefix" = xNONE && prefix=app0:
	# PSP2 apps are installed into app-specific directories. The
	# default directory structure of ScummVM makes no sense here so we
	# hardcode PSP2 specific directories here.
	datarootdir='${prefix}/data'
	datadir='${datarootdir}'
	docdir='${prefix}/doc'
	;;
psp)
	_host_os=psp
	_host_cpu=mipsallegrexel
	_host_alias=psp
	;;
samsungtv)
	_host_os=linux
	_host_cpu=arm
	_host_alias=arm-linux-gnueabi
	;;
switch)
	_host_os=switch
	_host_cpu=aarch64
	_host_alias=aarch64-none-elf
	test "x$prefix" = xNONE && prefix=.
	datarootdir='${prefix}/data'
	datadir='${datarootdir}'
	docdir='${prefix}/doc'
	;;
tvos)
	_host_os=iphone
	# Remains of configure not knowing about arm64
	_host_cpu=aarch64
	_host_alias=arm64-apple-darwin11
	;;
wasm32-*)
	_endian=little # the endian check below fails, but emscripten is always little endian anyway
	_host_os=emscripten
	_host_cpu=wasm32
	datadir='/data'
	CXX="em++"
	;;
wii)
	_host_os=wii
	_host_cpu=powerpc
	_host_alias=powerpc-eabi
	;;
*)
	if test -n "$_host"; then
		guessed_host=`$_srcdir/config.sub $_host`
	fi
	_host_cpu=`echo $guessed_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
	_host_vendor=`echo $guessed_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
	_host_os=`echo $guessed_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
	;;
esac

if test -z "$_host_alias"; then
	_host_alias="$_host_cpu-$_host_os"
else
	# if _host_alias was set, default to the standard GNU tools
	_ranlib=$_host_alias-ranlib
	_strip=$_host_alias-strip
	_ar="$_host_alias-ar cr"
	_as="$_host_alias-as"
	_dwp=$_host_alias-dwp
	_windres=$_host_alias-windres
fi

case $_host in
arm-*riscos | caanoo | ds | gp2x | gp2xwiz | openpandora | psp | psp2 | switch)
	if test "$_debug_build" = auto; then
		# If you want to debug one of these platforms, use '--disable-optimizations --enable-debug'
		_debug_build=no
	fi

	if test "$_optimizations" = auto; then
		# Enable optimizations by default.
		_optimizations=yes
	fi
	;;
esac

#
# Determine extension used for executables
#
get_system_exe_extension $_host_os
HOSTEXEPRE=
HOSTEXEEXT=$_exeext

#
# Determine separator used for $PATH
#
case $_host_os in
os2-emx*)
	SEPARATOR=";"
	;;
*)
	SEPARATOR=":"
	;;
esac

#
# Platform specific sanity checks
#
case $_host_os in
android)
	if test -z "$ANDROID_SDK_ROOT"; then
		echo "Please set ANDROID_SDK_ROOT in your environment: export ANDROID_SDK_ROOT=<path to Android SDK>"
 		exit 1
	fi
	if test -z "$ANDROID_NDK_ROOT"; then
		echo "Please set ANDROID_NDK_ROOT in your environment: export ANDROID_NDK_ROOT=<path to Android NDK>"
 		exit 1
 	fi
	;;
3ds)
	if test -z "$DEVKITPRO"; then
		echo "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to devkitPRO>"
		exit 1
	fi
    	_as="$DEVKITPRO/devkitARM/bin/arm-none-eabi-as"
	_ar="$DEVKITPRO/devkitARM/bin/arm-none-eabi-ar cr"
	_ranlib="$DEVKITPRO/devkitARM/bin/arm-none-eabi-ranlib"
	_strip="$DEVKITPRO/devkitARM/bin/arm-none-eabi-strip"
	if test -z "$CXX"; then
		CXX="$DEVKITPRO/devkitARM/bin/arm-none-eabi-g++"
	fi
	if test -z "$PKG_CONFIG_LIBDIR"; then
		PKG_CONFIG_LIBDIR="$DEVKITPRO/portlibs/3ds/lib/pkgconfig"
	fi
	if test -z "$PKG_CONFIG_PATH"; then
		PKG_CONFIG_PATH="$DEVKITPRO/portlibs/3ds/lib/pkgconfig"
	fi
	;;

ds | gamecube | switch | wii)
	if test -z "$DEVKITPRO"; then
		echo "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to devkitPRO>"
		exit 1
	fi
	;;
dreamcast)
	if test -z "$RONINDIR"; then
		echo "Please set RONINDIR in your environment. export RONINDIR=<path to libronin>"
		exit 1
	fi
	;;
emscripten)
	if test -z "$EMSDK"; then
		echo "Please set EMSDK in your environment. export EMSDK=<path to emscripten sdk>"
		exit 1
	fi
	;;
kolibrios)
	if test -z "$KOS32_SDK_DIR" || test -z "$KOS32_AUTOBUILD"; then
		echo "Please set KOS32_SDK_DIR and KOS32_AUTOBUILD in your environment. export KOS32_SDK_DIR=<path to KOS32 SDK> and export KOS32_AUTOBUILD=<path to KOS32 build>"
		exit 1
	fi
	_as="${KOS32_AUTOBUILD}/tools/win32/bin/kos32-as"
	_ar="${KOS32_AUTOBUILD}/tools/win32/bin/kos32-ar cr"
	_ranlib="${KOS32_AUTOBUILD}/tools/win32/bin/kos32-ar -s"
	_strip="${KOS32_AUTOBUILD}/tools/win32/bin/kos32-strip"
	if test -z "$CXX"; then
		CXX="${KOS32_AUTOBUILD}/tools/win32/bin/kos32-g++"
	fi
	append_var DEFINES "-U__WIN32__ -U_Win32 -U_WIN32 -U__MINGW32__ -UWIN32 -DKOLIBRIOS=1 -D_POSIX_C_SOURCE=1 -D_XOPEN_SOURCE=1"
	append_var CXXFLAGS "-I${KOS32_SDK_DIR}/sources/newlib/libc/include -I${KOS32_SDK_DIR}/sources/libstdc++-v3/include -fno-ident -fomit-frame-pointer"
	# Final executable will be a DLL but for tests we need to stick to a standard binary because DLLs having a main function trigger a build failure
	# We will add the -shared option at the end
	append_var LDFLAGS "-specs=$_srcdir/backends/platform/sdl/kolibrios/kolibrios.spec"
	;;
n64)
	if test -z "$N64SDK"; then
		echo "Please set N64SDK in your environment. export N64SDK=<path to n64 sdk>"
		exit 1
	fi
	;;
ps3)
	if test -z "$PS3DEV"; then
		echo "Please set PS3DEV in your environment. export PS3DEV=<path to ps3 toolchain>"
		exit 1
	fi
	if test -z "$PSL1GHT"; then
		echo "Please set PSL1GHT in your environment. export PSL1GHT=<path to psl1ght>"
		exit 1
	fi
	;;
psp2)
	if test -z "$VITASDK"; then
		echo "Please set VITASDK in your environment. export VITASDK=<path to psp2 toolchain>"
		exit 1
	fi
	;;
psp)
	if test -z "$PSPDEV"; then
		PSPDEV=`psp-config --pspdev-path`
	fi
	# TODO: Should we also insist on a valid PSPDEV value?
	if test -z "$PSPSDK"; then
		PSPSDK=`psp-config --pspsdk-path`
	fi
	if test -z "$PSPSDK"; then
		echo "Please set PSPSDK in your environment. export PSPSDK=<path to psp sdk>"
		exit 1
	fi

	# These have to be set early because the compiler will not link successfully
	# during testing otherwise
	if test -d "$PSPDEV/psp/lib"; then
		append_var LDFLAGS "-L$PSPDEV/psp/lib"
	fi
	append_var LDFLAGS "-L$PSPSDK/lib"
	append_var LDFLAGS "-specs=$_srcdir/backends/platform/psp/psp.spec"

	;;
riscos)
	if test -z "$GCCSDK_INSTALL_ENV"; then
		echo "Please set GCCSDK_INSTALL_ENV in your environment. export GCCSDK_INSTALL_ENV=<path to GCCSDK_INSTALL_ENV>"
		exit 1
	fi

	if test -e "$GCCSDK_INSTALL_ENV/bin/tokenize"; then
		add_line_to_config_mk "TOKENIZE := $GCCSDK_INSTALL_ENV/bin/tokenize"
	elif `which tokenize >/dev/null 2>&1`; then
		add_line_to_config_mk "TOKENIZE := tokenize"
	fi
	if test -e "$GCCSDK_INSTALL_ENV/bin/makerun"; then
		add_line_to_config_mk "MAKERUN := $GCCSDK_INSTALL_ENV/bin/makerun"
	elif `which makerun >/dev/null 2>&1`; then
		add_line_to_config_mk "MAKERUN := makerun"
	fi
	;;
*)
	;;
esac


# Toolchain for Android is in NDK and is using different naming convention
if test "$_host_os" = android; then

	# Check that we have the correct NDK version
	echo_n "Checking NDK version... "
	_ndk_gradle=$(grep "^[[:space:]]*ndkVersion" $_srcdir/dists/android/build.gradle | sed 's/[^0-9\.]//g')
	_ndk_version=$(grep "Pkg.Revision" $ANDROID_NDK_ROOT/source.properties | sed 's/[^0-9\.]//g' | sed 's/.//')
	if test "$_ndk_version" = "$_ndk_gradle"; then
		echo "$_ndk_version"
	else
		echo "$_ndk_version (Expected $_ndk_gradle)"
		exit 1
	fi

	# Try to use a known to work toolchain
	android_toolchains="windows-x86_64 darwin-x86_64 linux-x86_64"
	for toolchain in $android_toolchains; do
		_android_toolchain="$ANDROID_NDK_ROOT/toolchains/llvm/prebuilt/$toolchain"

		if test -d "$_android_toolchain"; then
			break
		fi
	done

	# See if an explicit toolchain is used
	if test -n "$ANDROID_TOOLCHAIN"; then
		_android_toolchain="$ANDROID_TOOLCHAIN"
	fi

	case $_host_cpu in
	arm | i686)
		_android_version=16
		;;
	aarch64 | x86_64)
		# Platform version 21 is needed as earlier versions of platform do not support this architecture.
		_android_version=21
		;;
	esac

	# If CXX environment variable is not set, try to set known to work defaults
	if test -z "$CXX"; then
		case $_host_cpu in
		arm)
			_android_target="armv7a-linux-androideabi$_android_version"
			;;
		aarch64)
			_android_target="aarch64-linux-android$_android_version"
			;;
		i686)
			_android_target="i686-linux-android$_android_version"
			;;
		x86_64)
			_android_target="x86_64-linux-android$_android_version"
			;;
		esac

		CXX="$_android_toolchain/bin/clang++"
		# If CXX is defined, don't alter CXXFLAGS and LDFLAGS as it can be done by the user explicitly
		append_var CXXFLAGS "-target ${_android_target}"
		append_var LDFLAGS "-target ${_android_target}"
	fi

	# These values can get overriden below by environments variables
	_ar="$_android_toolchain/bin/$_ar"
	_as="$_android_toolchain/bin/$_as"
	_dwp="$_android_toolchain/bin/$_dwp"
	_ranlib="$_android_toolchain/bin/$_ranlib"
	_strip="$_android_toolchain/bin/$_strip"
	if test -z "$STRINGS"; then
		STRINGS="$_android_toolchain/bin/$_host_alias-strings"
	fi
	if test -z "$PKG_CONFIG_LIBDIR"; then
		PKG_CONFIG_LIBDIR="$_android_toolchain/sysroot/usr/lib/$_host_alias/$_android_version/pkgconfig"
	fi
	_libcurlpath="$_android_toolchain/sysroot/usr/bin/$_host_alias/$_android_version:$_libcurlpath"
fi

#
# Determine the C++ compiler
#
echo_n "Looking for C++ compiler... "

# Check whether the given command is a working C++ compiler
test_compiler() {
	cat > tmp_cxx_compiler.cpp << EOF
	class Foo { int a; };
	int main(int argc, char **argv) {
		Foo *a = new Foo(); delete a; return 0;
	}
EOF

	echo "testing compiler: $1" >> "$TMPLOG"

	if test -n "$_host"; then
		# In cross-compiling mode, we cannot run the result
		eval "$1 $CXXFLAGS -o $TMPO.o -c tmp_cxx_compiler.cpp" 2>> "$TMPLOG" && cc_check_clean tmp_cxx_compiler.cpp
	else
		eval "$1 $CXXFLAGS $LDFLAGS -o $TMPO$HOSTEXEEXT tmp_cxx_compiler.cpp" 2>> "$TMPLOG" && eval "$TMPO$HOSTEXEEXT 2>> $TMPLOG" && cc_check_clean tmp_cxx_compiler.cpp
	fi
}

# Prepare a list of candidates for the C++ compiler
if test -n "$CXX" && test_compiler "$CXX"; then
	# Use the compiler specified in CXX
	echo $CXX
else
	if test -n "$_host"; then
		compilers="$_host_alias-g++ $_host_alias-c++ $_host_alias-clang++ $_host-g++ $_host-c++ $_host-clang++"
	else
		compilers="g++ c++ clang++"
	fi

	# Iterate over all candidates, pick the first working one
	CXX=
	for compiler in $compilers; do
		if test_compiler $compiler; then
			echo "success testing compiler: $compiler" >> "$TMPLOG"
			CXX=$compiler
			echo $CXX
			break
		else
			echo "failure testing compiler: $compiler" >> "$TMPLOG"
		fi
	done
fi

if test -z "$CXX"; then
	echo "none found!"
	exit 1
fi

if test -n "$RANLIB"; then
	_ranlib=$RANLIB
fi

if test -n "$STRIP"; then
	_strip=$STRIP
fi

if test -n "$AR"; then
	_ar="$AR cr"
fi

if test -n "$AS"; then
	_as=$AS
fi

if test -n "$DWP"; then
	_dwp=$DWP
fi

if test -n "$WINDRES"; then
	_windres=$WINDRES
fi

LD=$CXX

#
# Check whether the compiler supports C++11
#
echo_n "Checking if compiler supports C++11... "
have_cxx11=no
cat > $TMPC << EOF
int main(int argc, char *argv[]) { if (argv == nullptr) return -1; else return 0; }
EOF
cc_check -std=c++11 && have_cxx11=yes
echo $have_cxx11

if test "$have_cxx11" = "no" ; then
	echo
	echo "ScummVM requires C++11 compiler support. Please ensure your compiler supports it"
	exit 1
fi

#
# Determine the compiler version
#
echocheck "compiler version"

# Some compilers pretend to be gcc to ease compatibility with
# common Linux etc. programs. We first check for some of these here.
have_gcc=no
cc_check_define __GNUC__ && have_gcc=yes
have_icc=no
cc_check_define __INTEL_COMPILER && have_icc=yes
have_clang=no
cc_check_define __clang__ && have_clang=yes

if test "$have_icc" = yes; then
	add_line_to_config_mk 'HAVE_ICC = 1'

	# Make ICC error out on unknown command line options instead of printing
	# a warning. This is for example required to make the -Wglobal-constructors
	# detection work correctly.
	append_var CXXFLAGS "-diag-error 10006,10148"

	# ICC doesn't accept all gcc options, so we disable have_gcc, even if
	# ICC does have the gcc-compatibility defines.
	have_gcc=no
fi

if test "$have_clang" = yes; then
	add_line_to_config_mk 'HAVE_CLANG = 1'

	# clang does accept all gcc options we use, so we keep have_gcc
fi

if test "$have_gcc" = yes; then
	add_line_to_config_mk 'HAVE_GCC = 1'
	_cxx_major=`gcc_get_define __GNUC__`
	_cxx_minor=`gcc_get_define __GNUC_MINOR__`
	cxx_version="`( $CXX -dumpversion ) 2>&1`"

	if test "$have_clang" = yes; then
		# Clang sets a gcc version number for compatibility.
		# We keep that as _cxx_minor/_cxx_major for later
		# compiler version checks.

		# For the version reported in the configure log (cxx_version),
		# we get the actual clang version.
		cxx_version=`gcc_get_define __clang_version__`
		cxx_version="`echo "${cxx_version}" | sed -e 's/"\([^ ]*\) .*/\1/'`"
		cxx_version="clang $cxx_version, ok"

		append_var CXXFLAGS "-Wshadow"
	else
		cxx_version="GCC $cxx_version, ok"

		# Way too many false positives before GCC 5
		if test $_cxx_major -ge 5; then
			append_var CXXFLAGS "-Wshadow"
		else
			append_var CXXFLAGS "-Wno-missing-field-initializers"
		fi
	fi
elif test "$have_icc" = yes; then
	cxx_version="`( $CXX -dumpversion ) 2>/dev/null`"
	_cxx_major="`echo "${cxx_version}" | sed -ne 's/\([0-9][0-9]*\)\..*/\1/gp'`"
	_cxx_minor="`echo "${cxx_version}" | sed -ne 's/[0-9][0-9]*\.\([0-9][0-9]*\)/\1/gp'`"
	cxx_version="ICC $cxx_version, ok"
else
	# TODO: Big scary warning about unsupported compilers
	cxx_version=`( $CXX -version ) 2>&1`
	if test "$?" -eq 0; then
		cxx_version="`echo "${cxx_version}" | sed -ne 's/^.*[^0-9]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\).*$/\1/gp'`"
		if test -z "${cxx_version}"; then
			cxx_version="not found"
		fi
		echo non-gcc compiler version ${cxx_version}
	else
		cxx_version="not found"
		echo non-gcc compiler version ${cxx_version}
	fi
	cxx_verc_fail=yes
	cxx_version="$cxx_version, bad"
fi

echo "$cxx_version"

#
# Bail out now if no useable compiler was found.
#
if test "$cxx_verc_fail" = yes ; then
	echo
	echo "The version of your compiler is not supported at this time"
	exit 1
fi

#
# Setup compiler specific CXXFLAGS now that we know the compiler version.
# Foremost, this means enabling various warnings.
# In addition, we set CXX_UPDATE_DEP_FLAG for GCC and ICC.
#
# By default compile with strict C++
std_variant=c++
pedantic=no
if test "$have_gcc" = yes ; then
	# By default, we add -pedantic to the CXXFLAGS to catch some potentially
	# non-portable constructs, like use of GNU extensions.
	# However, some platforms use GNU extensions in system header files, so
	# for these we must not use -pedantic.
	pedantic=yes

	case $_host_os in
	# newlib-based system include files suppress non-C89 function
	# declarations under __STRICT_ANSI__, undefine it
	3ds | android | gamecube | kolibrios | psp | switch | wii)
		std_variant=gnu++
		pedantic=no
		;;
	amigaos* | dreamcast | ds | mingw* | mint* | morphos | n64 | ps3 | psp2)
		std_variant=gnu++
		;;
	openbsd*)
		pedantic=no
		;;
	*)
		;;
	esac
	append_var CXXFLAGS "-W -Wno-unused-parameter"
	add_line_to_config_mk 'CXX_UPDATE_DEP_FLAG = -MMD -MF "$(*D)/$(DEPDIR)/$(*F).d" -MQ "$@" -MP'

	append_var CXXFLAGS "-Wno-empty-body"
	append_var CXXFLAGS "-fno-operator-names"
elif test "$have_icc" = yes ; then
	# ICC does not support pedantic, while GCC and clang do.
	add_line_to_config_mk 'CXX_UPDATE_DEP_FLAG = -MMD -MF "$(*D)/$(DEPDIR)/$(*F).d" -MQ "$@" -MP'
fi

#
# Set status about C++11 mode
#
append_var CXXFLAGS "-std=${std_variant}11"

if test "$pedantic" = yes ; then
	append_var CXXFLAGS "-pedantic"
fi

#
# Additional tests for C++11 features that may not be present
#

# Check if initializer list is available
echo_n "Checking if C++11 initializer list is available... "
cat > $TMPC << EOF
#include <initializer_list>
#include <cstddef>
class FOO {
public:
	FOO(std::initializer_list<int> list) : _size(list.size()) {}
	size_t _size;
};
int main(int argc, char *argv[]) { return 0; }
EOF
cc_check
if test "$TMPR" -eq 0; then
	echo yes
else
	echo no
	define_in_config_if_yes yes 'NO_CXX11_INITIALIZER_LIST'
fi

# Check if std::nullptr_t is available
echo_n "Checking if C++11 std::nullptr_t is available... "
cat > $TMPC << EOF
#include <cstddef>
int main(int argc, char *argv[]) {
	std::nullptr_t i = nullptr;
	return 0;
}
EOF
cc_check
if test "$TMPR" -eq 0; then
	echo yes
else
	echo no
	define_in_config_if_yes yes 'NO_CXX11_NULLPTR_T'
fi

#
# Determine extra build flags for debug and/or release builds
#
if test "$_debug_build" = auto && test "$_release_build" = yes; then
	_debug_build=no
fi
if test "$_debug_build" != no; then
	# debug mode not explicitly disabled -> compile with debug information
	echo_n "Checking best debug mode... "

	debug_mode=-g
	test "$_host_os" = amigaos && debug_mode=-gstabs
	append_var CXXFLAGS "$debug_mode"
	echo_n -- "$debug_mode"

	echo "int main() { return 0; }" > $TMPC
	if `which $_dwp >/dev/null 2>&1` && cc_check_no_clean $debug_mode -gsplit-dwarf && `$_dwp -e $TMPO -o /dev/null >/dev/null 2>&1`; then
		append_var CXXFLAGS "-gsplit-dwarf"
		add_line_to_config_mk "SPLIT_DWARF = 1"
		echo_n -- " + split DWARF"
		if test "$_lld" = yes && cc_check_no_clean $debug_mode -gsplit-dwarf -fuse-ld=lld -Wl,--gdb-index; then
			append_var LDFLAGS "-fuse-ld=lld"
			append_var LDFLAGS "-Wl,--gdb-index"
			echo_n -- " + LLD"
		elif test "$_mold" = yes && cc_check_no_clean $debug_mode -gsplit-dwarf -fuse-ld=mold -Wl,--gdb-index; then
			append_var LDFLAGS "-fuse-ld=mold"
			append_var LDFLAGS "-Wl,--gdb-index"
			echo_n -- " + Mold"
		elif test "$_gold" = yes && cc_check_no_clean $debug_mode -gsplit-dwarf -fuse-ld=gold -Wl,--gdb-index; then
			append_var LDFLAGS "-fuse-ld=gold"
			append_var LDFLAGS "-Wl,--gdb-index"
			echo_n -- " + Gold"
		fi
	fi

	if cc_check_no_clean $debug_mode -fvar-tracking-assignments; then
		append_var CXXFLAGS "-fvar-tracking-assignments"
		echo_n -- " + var tracking"
	fi
	cc_check_clean
	echo ""
fi

if ! echo "$LDFLAGS" | grep -q -e -fuse-ld; then
	echo "Using LLD linker... $_lld"
	if test "$_lld" = yes ; then
		append_var LDFLAGS -fuse-ld=lld
	fi
fi

if ! echo "$LDFLAGS" | grep -q -e -fuse-ld; then
	echo "Using Mold linker... $_mold"
	if test "$_mold" =  yes ; then
		append_var LDFLAGS -fuse-ld=mold
	fi
fi

if test "$_release_build" = yes; then
	# Add a define, which indicates we are doing
	# a build for a release version.
	append_var DEFINES "-DRELEASE_BUILD"
fi

set_flag_if_supported() {
	echocheck "whether C++ compiler accepts $1"
	cat > $TMPC << EOF
	int main() { return 0; }
EOF
	# Note: we check for -Wxxx instead of -Wno-xxx as not all compilers error
	# out on unknown -Wno-xxx flags.
	if cc_check $(echo $1 | sed 's/-Wno-/-W/') -Werror; then
		append_var CXXFLAGS "$1"
		echo yes
	else
		echo no
	fi
}

set_flag_if_supported -Wglobal-constructors

# If the compiler supports the -Wundefined-var-template flag, silence that warning.
# We get this warning a lot with regard to the Singleton class as we explicitly
# instantiate each specialisation. An alternate way to deal with it would be to
# change the way we instantiate the singleton classes as done in PR #967.
# Note: we check the -Wundefined-var-template as gcc does not error out on unknown
# -Wno-xxx flags.
set_flag_if_supported -Wno-undefined-var-template

# Vanilla clang 6 enables the new -Wpragma-pack which warns when leaving an
# included file which changes the current alignment.
# As our common/pack-{start,end}.h trigger this we disable this warning.
# Because there is no correlation between the version reported by Apple Xcode
# clang and vanilla clang we cannot rely on the __clang_major__/clang_minor__
# macros.
set_flag_if_supported -Wno-pragma-pack

set_flag_if_supported -Wno-address-of-packed-member

if test -n "$STRINGS"; then
	_strings=$STRINGS
else
	echo_n "Checking for $_host_alias-strings... " >> "$TMPLOG"
	if `which $_host_alias-strings >/dev/null 2>&1`; then
		_strings=$_host_alias-strings
		echo yes >> "$TMPLOG"
	else
		_strings=strings
		echo no >> "$TMPLOG"
	fi
fi

#
# Check for endianness
#
echo_n "Checking endianness... "
cat > tmp_endianness_check.cpp << EOF
#ifndef __GNUC__
#define __attribute__(x)
#endif
__attribute__ ((used)) unsigned short ascii_mm[] = { 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 };
__attribute__ ((used)) unsigned short ascii_ii[] = { 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 };
const char * _ascii() { char* s = (char*) ascii_mm; s = (char*) ascii_ii; return s; }
__attribute__ ((used)) unsigned short ebcdic_ii[] = { 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 };
__attribute__ ((used)) unsigned short ebcdic_mm[] = { 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 };
const char * _ebcdic() { char* s = (char*) ebcdic_mm; s = (char*) ebcdic_ii; return s; }
int main() { _ascii (); _ebcdic (); return 0; }
EOF
$CXX $LDFLAGS $CXXFLAGS -o $TMPO$HOSTEXEEXT tmp_endianness_check.cpp >> "$TMPLOG" 2>&1
if $_strings $TMPO$HOSTEXEEXT 2>> "$TMPLOG"| grep BIGenDianSyS >/dev/null; then
	_endian=big
elif $_strings $TMPO$HOSTEXEEXT 2>> "$TMPLOG" | grep LiTTleEnDian >/dev/null; then
	_endian=little
fi
echo $_endian;
cc_check_clean tmp_endianness_check.cpp tmp_endianness_check.dwo

case $_endian in
	big)
		add_line_to_config_h '#undef SCUMM_LITTLE_ENDIAN'
		add_line_to_config_h '#define SCUMM_BIG_ENDIAN'
		;;
	little)
		add_line_to_config_h '#define SCUMM_LITTLE_ENDIAN'
		add_line_to_config_h '#undef SCUMM_BIG_ENDIAN'
		;;
	*)
		exit 1
		;;
esac

#
# Determine a data type with the given length
#
find_type_with_size() {
	for datatype in int short char long "long long" __int64 "long long int" unknown; do
		cat > tmp_find_type_with_size.cpp << EOF
typedef $datatype ac__type_sizeof_;
int main() {
	static int test_array [1 - 2 * !(((long int) (sizeof (ac__type_sizeof_))) == $1)];
	test_array [0] = 0;
	return 0;
}
EOF
		if $CXX $CXXFLAGS -c -o $TMPO.o tmp_find_type_with_size.cpp >> "$TMPLOG" 2>&1 ; then
			break
		else
			if test "$datatype" = "unknown"; then
				echo "couldn't find data type with $1 bytes"
				exit 1
			fi
			continue
		fi
	done
	cc_check_clean tmp_find_type_with_size.cpp
	echo $datatype
}

#
# Check whether the system is 32-bit
#
pointer_is_32bit() {
	cat > tmp_pointer_is_32bit.cpp << EOF
int main() {
	static int test_array[1 - 2 * !(sizeof(void *) == 4)];
	test_array[0] = 0;
	return 0;
}
EOF
	$CXX $CXXFLAGS -c -o $TMPO.o tmp_pointer_is_32bit.cpp >> "$TMPLOG" 2>&1
	status=$?
	cc_check_clean tmp_pointer_is_32bit.cpp
	return $status
}

echo_n "Checking 64-bitness... "
pointer_is_32bit
if test $? -eq 0; then
	signed_type_ptr=int32
	unsigned_type_ptr=uint32
	echo "no"
else
	signed_type_ptr=int64
	unsigned_type_ptr=uint64
	echo "yes"
fi

#
# Determine data type sizes
#
echo_n "Type with 1 byte... "
type_1_byte=`find_type_with_size 1`
TMPR="$?"
echo "$type_1_byte"
test $TMPR -eq 0 || exit 1	# check exit code of subshell

echo_n "Type with 2 bytes... "
type_2_byte=`find_type_with_size 2`
TMPR="$?"
echo "$type_2_byte"
test $TMPR -eq 0 || exit 1	# check exit code of subshell

echo_n "Type with 4 bytes... "
type_4_byte=`find_type_with_size 4`
TMPR="$?"
echo "$type_4_byte"
test $TMPR -eq 0 || exit 1	# check exit code of subshell

echo_n "Type with 8 bytes... "
type_8_byte=`find_type_with_size 8`
TMPR="$?"
echo "$type_8_byte"
test $TMPR -eq 0 || exit 1	# check exit code of subshell

#
# Check whether memory alignment is required
#
# For some CPU types, unaligned memory access is either not supported at
# all (and so leads to a crash), requires a super-slow emulation via an
# exception handler, or just results in incorrect results.
# On the other hand, accessing data in a manner that works regardless of
# alignment can be a lot slower than regular access, so we don't want
# to use it if we don't have to.
#
# So we do the following: For CPU families where we know whether unaligned
# access is safe & fast, we enable / disable unaligned access accordingly.
# Otherwise, we just disable memory alignment.
#
# NOTE: In the past, for non-cross compiled builds, we would also run some code
# which would try to test whether unaligned access worked or not. But this test
# could not reliably determine whether unaligned access really worked in all
# situations (and across different implementations of the target CPU arch), nor
# whether it was fast (as opposed to slowly emulated by fault handlers). Hence,
# we do not use this approach anymore.
#
# NOTE: The only kinds of unaligned access we allow are for 2 byte and 4
# byte loads / stores. No promises are made for bigger sizes, such as 8
# or 16 byte loads, for which architectures may behave differently than
# for the smaller sizes.
echo_n "Alignment required... "
case $_host_cpu in
	i[3-6]86 | amd64 | x86_64 | powerpc* | ppc*)
		# Unaligned access should work
		_need_memalign=no
		;;
	alpha* | arm* | bfin* | hp* | mips* | sh* | sparc* | ia64 | nv1*)
		# Unaligned access is not supported or extremely slow.
		_need_memalign=yes
		;;
	*)
		# Status of unaligned access is unknown, so assume the worst.
		_need_memalign=yes
		;;
esac
if test "$_enable_ubsan" = yes ; then
	# UBSan implies -fsanitize=alignment, so avoid false positives.
	_need_memalign=yes
fi
echo "$_need_memalign"

define_in_config_h_if_yes $_need_memalign 'SCUMM_NEED_ALIGNMENT'

#
# Check the CPU architecture
#
echo_n "Checking host CPU architecture... "
case $_host_cpu in
	aarch64)
		echo "aarch64"
		;;
	alpha*)
		echo "Alpha"
		;;
	arm*)
		echo "ARM"
		case $_host in
			openpandora)
				define_in_config_if_yes yes 'USE_ARM_NEON_ASPECT_CORRECTOR'
				;;
			caanoo | gp2x | gp2xwiz | maemo )
				define_in_config_if_yes yes 'USE_ARM_SCALER_ASM'
				define_in_config_if_yes yes 'USE_ARM_SMUSH_ASM'
				define_in_config_if_yes yes 'USE_ARM_GFX_ASM'
				# FIXME: The following feature exhibits a bug during the intro scene of Indy 4
				# (on Pandora and iPhone at least)
				#define_in_config_if_yes yes 'USE_ARM_COSTUME_ASM'
				;;
		esac

		append_var DEFINES "-DARM_TARGET"
		;;
	hppa* | parisc*)
		echo "PA-RISC"
		;;
	i[3-6]86)
		echo "x86"
		_have_x86=yes
		define_in_config_h_if_yes $_have_x86 'HAVE_X86'
		;;
	ia64*)
		echo "Itanium"
		;;
	m68*)
		echo "m68k"
		;;
	mips*)
		echo "MIPS"
		append_var DEFINES "-DMIPS_TARGET"
		;;
	powerpc* | ppc*)
		echo "PowerPC"
		append_var DEFINES "-DPPC_TARGET"
		;;
	riscv*)
		echo "RISC-V"
		;;
	sh*)
		echo "SuperH"
		;;
	sparc*)
		echo "SPARC"
		;;
	wasm32)
		echo "wasm32"
		;;
	x86_64 | amd64)
		echo "x86_64"
		_have_amd64=yes
		define_in_config_h_if_yes $_have_amd64 'HAVE_AMD64'
		;;
	*)
		echo "unknown ($_host_cpu)"
		;;
esac


#
# Determine build settings
#
echo_n "Checking hosttype... "
echo $_host_os
case $_host_os in
	3ds)
		_optimization_level=-O2
		append_var DEFINES "-D__3DS__"
		append_var DEFINES "-DARM"
		append_var DEFINES "-DARM11"
		append_var CXXFLAGS "-march=armv6k -mtune=mpcore -mfloat-abi=hard -mtp=soft"
		append_var CXXFLAGS "-mword-relocations"
		append_var CXXFLAGS "-ffunction-sections"
		append_var CXXFLAGS "-fomit-frame-pointer"
		append_var CXXFLAGS "-I$DEVKITPRO/libctru/include"
		append_var CXXFLAGS "-I$DEVKITPRO/portlibs/3ds/include"
		append_var LDFLAGS "-march=armv6k -mtune=mpcore -mfloat-abi=hard -mtp=soft"
		append_var LDFLAGS "-L$DEVKITPRO/libctru/lib"
		append_var LDFLAGS "-L$DEVKITPRO/portlibs/3ds/lib"
		append_var LDFLAGS "-specs=3dsx.specs -lctru"
		append_var LIBS "-lcitro3d"
		;;
	amigaos*)
		# Leave out resources by default to save binary size
		_builtin_resources=no
		# AmigaOS (PPC) target
		_port_mk="backends/platform/sdl/amigaos/amigaos.mk"
		add_line_to_config_mk 'AMIGAOS = 1'
		append_var CXXFLAGS "-mlongcall"
		# Dependencies might also be compiled with stack protection
		append_var LDFLAGS "-fstack-protector"
		# Enable full optimizations for non-debug builds
		if test "$_debug_build" = no; then
			_optimization_level=-O3
		else
			_optimization_level=-O0
			append_var CXXFLAGS "-fno-omit-frame-pointer"
			append_var CXXFLAGS "-fno-strict-aliasing"
			define_in_config_if_yes "$_debug_build" 'DEBUG_BUILD'
		fi
		# When building dynamic, add everything possible as plugin
		# except detection_features (see bug #13603)
		if test "$_dynamic_modules" = yes ; then
			_detection_features_static=yes
			_plugins_default=dynamic
		fi
		# Use 'long' for ScummVM's 4 byte typedef, because AmigaOS
		# already typedefs (u)int32 as (unsigned) long and suppress
		# those noisy format warnings caused by the 'long' 4 byte
		type_4_byte='long'
		append_var CXXFLAGS "-Wno-format"
		;;
	android)
		case $_host in
			android-arm-v7a)
				# Disable NEON for older devices (like with Tegra 2)
				append_var CXXFLAGS "-mfpu=vfp"
				# This is really old CPU but might be still used with android 4.1, it slightly increases code size and decreases performance.
				append_var LDFLAGS "-Wl,--fix-cortex-a8"
				ABI="armeabi-v7a"
				;;
			android-arm64-v8a)
				ABI="arm64-v8a"
				;;
			android-x86)
				ABI="x86"
				;;
			android-x86_64)
				ABI="x86_64"
				;;
			ouya)
				append_var CXXFLAGS "-mtune=cortex-a9"
				ABI="armeabi-v7a"
				;;
		esac

		append_var CXXFLAGS "-Wno-inconsistent-missing-override"

		append_var CXXFLAGS "-fpic"
		append_var CXXFLAGS "-ffunction-sections"
		append_var CXXFLAGS "-funwind-tables"
		if test "$_debug_build" = no; then
			_optimization_level=-Os
			append_var CXXFLAGS "-fomit-frame-pointer"
			append_var CXXFLAGS "-fstrict-aliasing"
		else
			_optimization_level=-O0
			append_var CXXFLAGS "-fno-omit-frame-pointer"
			append_var CXXFLAGS "-fno-strict-aliasing"
		fi

		# Build ID is needed for native debugging in Android Studio
		append_var LDFLAGS "-Wl,--build-id=sha1"

		add_line_to_config_mk "ANDROID_SDK_ROOT := $ANDROID_SDK_ROOT"
		add_line_to_config_mk "ANDROID_NDK_ROOT := $ANDROID_NDK_ROOT"

		_seq_midi=no
		;;
	beos*)
		append_var DEFINES "-DSYSTEM_NOT_SUPPORTING_D_TYPE"
		# Needs -lbind -lsocket for the timidity MIDI driver
		LDFLAGS="-L/boot/home/config/lib"
		CFLAGS="-I/boot/home/config/include"
		append_var CXXFLAGS "-fhuge-objects"
		append_var LIBS "-lbind -lsocket"
		_seq_midi=no
		;;
	cygwin*)
		if test "$_cygwin_build" = no; then
			echo ERROR: Cygwin building is not supported by ScummVM anymore. Consider using MinGW.
			exit 1
		else
			echo WARNING: Cygwin building is not supported by ScummVM anymore.
			echo Cygwin should be used only for development purposes and testing POSIX code on Windows.
			echo Consider using MinGW instead.
			append_var DEFINES "-D_GNU_SOURCE"
		fi
		;;
	darwin*)
		case $_host_cpu in
		powerpc*)
			if test "$_dynamic_modules" = no ; then
				echo "WARNING: Building static engines will probably fail at link time on Mac PowerPC"
			fi
			;;
		esac

		append_var DEFINES "-DMACOSX"
		append_var LIBS "-framework AudioUnit -framework AudioToolbox -framework Carbon -framework CoreMIDI"
		# SDL2 doesn't seem to add Cocoa for us.
		append_var LIBS "-framework Cocoa"
		add_line_to_config_mk 'MACOSX = 1'
		_seq_midi=no

		# Now we may have MacPorts or Fink installed
		# Which put libraries and headers in non-standard places
		# Checking them here

		# MacPorts
		# There is no way to get the prefix, so implementing a hack here
		macport_version=`port version 2>/dev/null`
		if test "$?" -eq 0; then
			macport_version="`echo "${macport_version}" | sed -ne 's/Version: \([0-9]\.[0-9]\.[0-9]\)/\1/gp'`"
			echo_n "You seem to be running MacPorts version ${macport_version}..."

			macport_prefix=`which port`
			# strip off /bin/port from /opt/local/bin/port
			macport_prefix=`dirname ${macport_prefix}`
			macport_prefix=`dirname ${macport_prefix}`

			echo "adding ${macport_prefix} to paths"

			LDFLAGS="-L${macport_prefix}/lib $LDFLAGS"
			CXXFLAGS="-I${macport_prefix}/include $CXXFLAGS"

			if test -z "$_staticlibpath"; then
				_staticlibpath=${macport_prefix}
				echo "Set staticlib-prefix to ${_staticlibpath}"
			fi
		fi

		# Fink
		# There is no way to get the prefix, so implementing a hack here
		fink_version=`fink -V 2>/dev/null`
		if test "$?" -eq 0; then
			fink_version="`echo "${fink_version}" | sed -ne 's/Package manager version: \([0-9.]*\)/\1/gp'`"
			echo_n "You seem to be running Fink version ${fink_version}..."

			fink_prefix=`which fink`
			# strip off /bin/fink from /sw/bin/port
			fink_prefix=`dirname ${fink_prefix}`
			fink_prefix=`dirname ${fink_prefix}`

			echo "adding ${fink_prefix} to paths"

			LDFLAGS="-L${fink_prefix}/lib $LDFLAGS"
			CXXFLAGS="-I${fink_prefix}/include $CXXFLAGS"

			if test -z "$_staticlibpath"; then
				_staticlibpath=${fink_prefix}
				echo "Set staticlib-prefix to ${_staticlibpath}"
			fi
		fi

		# Homebrew
		brew_version=`brew -v 2>/dev/null`
		if test "$?" -eq 0; then
			brew_version="`echo "${brew_version}" | sed -ne 's/Homebrew \([0-9.]*\)/\1/gp'`"
			echo_n "You seem to be running Homebrew version ${brew_version}..."

			brew_prefix=`brew --prefix`

			echo "adding ${brew_prefix} to paths"

			LDFLAGS="-L${brew_prefix}/lib $LDFLAGS"
			CXXFLAGS="-I${brew_prefix}/include $CXXFLAGS"

			if test -z "$_staticlibpath"; then
				_staticlibpath=${brew_prefix}
				echo "Set staticlib-prefix to ${_staticlibpath}"
			fi
		fi

		# If _staticlibpath is not set yet try first /sw (fink) then /usr/local
		# (the macports case is handled above).
		if test -z "$_staticlibpath"; then
			if test -d "/sw"; then
				_staticlibpath=/sw
				echo "Set staticlib-prefix to ${_staticlibpath}"
			elif test -d "/usr/local"; then
				_staticlibpath=/usr/local
				echo "Set staticlib-prefix to ${_staticlibpath}"
			else
				echo "Could not determine prefix for static libraries"
			fi
		fi

		# If _xcodetoolspath is not set yet use xcode-select to get the path
		if test -z "$_xcodetoolspath"; then
			_xcodetoolspath=`xcode-select -print-path`/Tools
			if test -d "$_xcodetoolspath"; then
				echo "Set xcodetools-path to ${_xcodetoolspath}"
			else
				_xcodetoolspath=
				echo "Could not determine path for Xcode Tools"
			fi
		fi

		echocheck "macOS deployment target"
		cat > $TMPC << EOF
#include "AvailabilityMacros.h"

#define _DIGIT(x) #x
#define DIGIT(x) _DIGIT(x)

const char version[] = "Version:" DIGIT(MAC_OS_X_VERSION_MIN_REQUIRED);
const char *_version() { char *s = (char *)version; return s; }

int main(int argc, char *argv[]) { _version(); return 0; }
EOF
		cc_check_no_clean
		if $_strings $TMPO$HOSTEXEEXT | grep Version: >/dev/null; then
			_macos_min_version=`$_strings $TMPO$HOSTEXEEXT | grep Version:`
			_macos_min_version="${_macos_min_version#Version:}"
		fi
		cc_check_clean

		# Also get a dot version of the min version
		_macos_min_version_dot=undefined
		if test -n "$_macos_min_version" ; then
			if test "$_macos_min_version" -lt 101000; then
				_macos_min_ver_major=$((${_macos_min_version}/100))
				_macos_min_ver_minor=$((${_macos_min_version}/10 - 10*${_macos_min_ver_major}))
				_macos_min_version_dot=${_macos_min_ver_major}.${_macos_min_ver_minor}
			else
				_macos_min_ver_major=$((${_macos_min_version}/10000))
				_macos_min_ver_minor=$((${_macos_min_version}/100 - 100*${_macos_min_ver_major}))
				_macos_min_version_dot=${_macos_min_ver_major}.${_macos_min_ver_minor}
			fi
		fi
		echo $_macos_min_version_dot

		# Version-specific quirks
		if test -n "$_macos_min_version" ; then
			# When building for MacOS X 10.5 or below
			if test "$_macos_min_version" -lt 1060 ; then
				add_line_to_config_mk 'MACOSX_LEOPARD_OR_BELOW = 1'
				if test "$_debug_build" != no ; then
					# Newer compiler but ancient gdb
					append_var CXXFLAGS "-gstabs+"
				fi
			fi

			# When building with SDK 10.14 or above, we cannot compile the 32 bits dock plugin
			# Assume the SDK version is the same as the min version.
			if test "$_macos_min_version" -gt 101399 ; then
				add_line_to_config_mk 'MACOSX_64_BITS_ONLY = 1'
			fi
		fi
		if test "$_host_cpu" = "aarch64" ; then
			add_line_to_config_mk 'MACOSX_ARM64 = 1'
		fi

		# Avoid "file has no symbols" noise from ranlib, if it's new enough
		ranlib_version=`$_ranlib -V 2>/dev/null`
		if test -n "$ranlib_version" ; then
			ranlib_version="`echo "${ranlib_version}" | sed -ne 's/.*cctools-\([0-9]\{1,\}\).*/\1/gp'`"
			if test -n "$ranlib_version" && test "$ranlib_version" -ge 862 ; then
				append_var _ranlib "-no_warning_for_no_symbols"
				# Also tell ar not to do its own calls to ranlib
				append_var _ar "-S"
			fi
		fi

		# Use pandoc to generate README and NEWS file for the bundle
		# Also default to HTML rather than plain text as it gives a nicer
		# formating, especially for the README. We could consider using RTF
		# as well, but TextEdit does not support links within the document,
		# and having a TOC with links, which we do with html, is quite convenient.
		_pandoc=yes
		if test "$_pandocformat" = "default"; then
			_pandocformat="html"
		fi
		;;
	dreamcast)
		append_var DEFINES "-D__DC__"
		append_var DEFINES "-DNONSTANDARD_PORT"
		_detection_features_full=no
		if test "$_dynamic_modules" = yes ; then
			_detection_features_static=no
		fi
		# XXX: Enabling SCUMM v7+ hasn't been useful on DC for many years (bug #6008),
		# and may confuse users, since this is one of the most popular engines, so make
		# sure that it won't be enabled (until a better backend capability requirement
		# feature is implemented). This may also help SCUMMv6 and below behave better
		# on this very memory-limited platform.
		engine_disable scumm_7_8
		;;
	ds)
		_optimization_level=-Os
		append_var DEFINES "-D__DS__"
		append_var DEFINES "-DNDS"
		append_var DEFINES "-DARM9"
		append_var DEFINES "-DARM"
		append_var DEFINES "-DNONSTANDARD_PORT"
		append_var CXXFLAGS "-isystem $DEVKITPRO/libnds/include"
		append_var CXXFLAGS "-isystem $DEVKITPRO/portlibs/nds/include"
		append_var CXXFLAGS "-isystem $DEVKITPRO/portlibs/armv5te/include"
		append_var CXXFLAGS "-march=armv5te"
		append_var CXXFLAGS "-mtune=arm946e-s"
		append_var CXXFLAGS "-fomit-frame-pointer"
		append_var CXXFLAGS "-mthumb"
		append_var CXXFLAGS "-mthumb-interwork"
		append_var CXXFLAGS "-ffunction-sections"
		append_var CXXFLAGS "-fdata-sections"
		append_var CXXFLAGS "-fno-strict-aliasing"
		append_var CXXFLAGS "-fno-threadsafe-statics"
		append_var CXXFLAGS "-fuse-cxa-atexit"
		# Suppress format warnings as the long 4 byte causes noisy warnings.
		append_var CXXFLAGS "-Wno-format"
		append_var LDFLAGS "-mthumb"
		append_var LDFLAGS "-mthumb-interwork"
		append_var LDFLAGS "-mfloat-abi=soft"
		append_var LDFLAGS "-Wl,-Map,map.txt"
		append_var LDFLAGS "-L$DEVKITPRO/libnds/lib"
		append_var LDFLAGS "-L$DEVKITPRO/portlibs/nds/lib"
		append_var LDFLAGS "-L$DEVKITPRO/portlibs/armv5te/lib"
		append_var LIBS "-specs=ds_arm9.specs"
		append_var LIBS "-lfilesystem"
		append_var LIBS "-lfat"
		append_var LIBS "-lmm9"
		append_var LIBS "-lnds9"
		;;
	emscripten)
		# mandatory emscripten flags
		append_var LDFLAGS "-s ALLOW_MEMORY_GROWTH=1 -s ASYNCIFY -s FORCE_FILESYSTEM=1"

		append_var DEFINES "-DEMSCRIPTEN"
		add_line_to_config_mk 'EMSCRIPTEN = 1'

		if test "$_debug_build" = yes; then
			_optimization_level=-O2
			append_var LDFLAGS "-O2 -g3 -s ASSERTIONS=2"
		else
			_optimization_level=-O3
			append_var LDFLAGS "-O3"
		fi

		# activate emscripten-ports
		if test "$_freetype2" != no; then
			append_var LDFLAGS "-s USE_FREETYPE=1 -s SUPPORT_LONGJMP=1" # freetype requires setjmp
			# neither pkg-config nor freetype-config work, so we setup freetype manually
			_freetypepath="$EMSCRIPTEN/cache/ports-builds/freetype/"
			FREETYPE2_CFLAGS="-I$_freetypepath/include" # there were link errors / missing symbols without this
			_freetype_found="true"
		else
			#use link time optimization to further reduce exe size (this can't be used with setjmp which freetype requires)
			# TODO: Figure out why this is a conflict and/or if freetype can be built without setjmp
			append_var CXXFLAGS "-flto"
			append_var LDFLAGS "-flto"
		fi
		if test "$_jpeg" != no; then
			append_var LDFLAGS "-s USE_LIBJPEG=1"
		fi
		if test "$_png" != no; then
			append_var LDFLAGS "-s USE_LIBPNG=1"
		fi
		if test "$_sdl" != no; then
			append_var LDFLAGS "-s USE_SDL=2 "
		fi
		if test "$_vorbis" != no; then
			append_var LDFLAGS "-s USE_OGG=1" # vorbis needs to be linked against OGG (even if we use an external vorbis lib)
		fi
		if test "$_zlib" != no; then
			append_var LDFLAGS "-s USE_ZLIB=1"
		fi
	;;
	freebsd* | dragonfly*)
		append_var LDFLAGS "-L/usr/local/lib"
		append_var CXXFLAGS "-I/usr/local/include"
		;;
	gamecube)
		_optimization_level=-Os
		append_var CXXFLAGS "-mogc"
		append_var CXXFLAGS "-mcpu=750"
		append_var CXXFLAGS "-meabi"
		append_var CXXFLAGS "-mhard-float"
		append_var CXXFLAGS "-ffunction-sections"
		append_var CXXFLAGS "-fdata-sections"
		append_var CXXFLAGS "-fmodulo-sched"
		append_var CXXFLAGS "-fuse-cxa-atexit"
		append_var CXXFLAGS "-I$DEVKITPRO/libogc/include"
		append_var CXXFLAGS "-I$DEVKITPRO/portlibs/ppc/include"
		# libogc is required to link the cc tests (includes _start())
		append_var LDFLAGS "-mogc"
		append_var LDFLAGS "-mcpu=750"
		append_var LDFLAGS "-L$DEVKITPRO/libogc/lib/cube"
		append_var LDFLAGS "-L$DEVKITPRO/portlibs/ppc/lib"
		append_var LDFLAGS "-logc"
		if test "$_dynamic_modules" = "yes" ; then
			# retarded toolchain patch forces --gc-sections, overwrite it
			append_var LDFLAGS "-Wl,--no-gc-sections"
		fi
		;;
	haiku*)
		append_var DEFINES "-DSYSTEM_NOT_SUPPORTING_D_TYPE"
		# Needs -lnetwork for the timidity MIDI driver
		append_var LIBS "-lnetwork"
		_seq_midi=no
		;;
	irix*)
		append_var DEFINES "-DIRIX"
		append_var DEFINES "-DSYSTEM_NOT_SUPPORTING_D_TYPE"
		append_var LIBS "-lmd -lfastm -lm"
		_ranlib=:
		;;
	linux* | uclinux*)
		;;
	mingw*)
		append_var DEFINES "-DWIN32"
		# append_var DEFINES "-D__USE_MINGW_ANSI_STDIO=0"  # Modern MinGW does not need it
		append_var LDFLAGS "-static-libgcc -static-libstdc++"
		append_var LIBS "-lmingw32 -lwinmm -lgdi32"
		append_var OBJS "dists/scummvm.o"
		add_line_to_config_mk 'WIN32 = 1'
		_port_mk="backends/platform/sdl/win32/win32.mk"
		;;
	mint*)
		append_var DEFINES "-DSYSTEM_NOT_SUPPORTING_D_TYPE"
		append_var DEFINES "-D_GNU_SOURCE"
		append_var DEFINES "-D_ISOC11_SOURCE"
		;;
	morphos*)
		if test "$_debug_build" = no; then
			_optimization_level=-O2
		fi
		append_var LDFLAGS "-Wl,--export-dynamic"
		append_var LDFLAGS "-L/usr/local/lib"
		append_var CXXFLAGS "-D__MORPHOS_SHAREDLIBS"
		# We have to use 'long' for our 4 byte typedef because MorphOS already typedefs (u)int32
		# as (unsigned) long, and consequently we'd get a compiler error otherwise.
		type_4_byte='long'
		# Supress format warnings as the long 4 byte causes noisy warnings.
		append_var CXXFLAGS "-Wno-format"
		add_line_to_config_mk 'MORPHOS = 1'
		_port_mk="backends/platform/sdl/morphos/morphos.mk"
		# use SDL2
		_sdlconfig=sdl2-config
		;;
	msys)
		echo ERROR: Using the MSYS shell in msys mode is not supported. Please use the MSYS shell in mingw mode instead.
		exit 1
		;;
	n64)
		append_var DEFINES "-D__N64__"
		append_var DEFINES "-DLIMIT_FPS"
		append_var DEFINES "-DNONSTANDARD_PORT"
		append_var DEFINES "-DDISABLE_COMMAND_LINE"
		append_var DEFINES "-DDISABLE_DEFAULT_SAVEFILEMANAGER"
		append_var DEFINES "-DDISABLE_DOSBOX_OPL"
		append_var DEFINES "-DDISABLE_FANCY_THEMES"
		append_var DEFINES "-DDISABLE_NES_APU"
		append_var DEFINES "-DDISABLE_SID"
		append_var DEFINES "-DREDUCE_MEMORY_USAGE"
		add_line_to_config_mk 'N64 = 1'
		_detection_features_full=no
		_nuked_opl=no
		;;
	openbsd*)
		append_var LDFLAGS "-L/usr/local/lib"
		append_var CXXFLAGS "-I/usr/local/include"
		_seq_midi=no
		;;
	ps3)
		# Force use of SDL and freetype from the ps3 toolchain
		_sdlpath="$PS3DEV/portlibs/ppu:$PS3DEV/portlibs/ppu/bin"
		_freetypepath="$PS3DEV/portlibs/ppu:$PS3DEV/portlibs/ppu/bin"
		_libcurlpath="$PS3DEV/portlibs/ppu:$PS3DEV/portlibs/ppu/bin"

		append_var DEFINES "-DPLAYSTATION3"
		append_var CXXFLAGS "-mcpu=cell -mno-fp-in-toc -I$PSL1GHT/ppu/include -I$PS3DEV/portlibs/ppu/include"
		append_var LDFLAGS "-L$PSL1GHT/ppu/lib -L$PS3DEV/portlibs/ppu/lib"
		# The network libraries are statically linked and need to be specified in the following order
		append_var SDL_NET_LIBS "-lSDL2_net -lnet -lnetctl -lsysmodule"
		add_line_to_config_mk 'PLAYSTATION3 = 1'
		add_line_to_config_h "#define PREFIX \"${prefix}\""
		# PS3 has no OpenGL support at all even though it's SDL based
		_opengl_mode=none
		;;
	psp2)
		_freetypepath="$VITASDK/arm-vita-eabi/bin"
		_freetype2=yes
		_libcurlpath="$VITASDK/arm-vita-eabi/bin"
		append_var CXXFLAGS "--sysroot=$VITASDK/arm-vita-eabi"
		append_var LDFLAGS "--sysroot=$VITASDK/arm-vita-eabi"
		append_var DEFINES "-DPSP2 -DSYSTEM_NOT_SUPPORTING_D_TYPE"
		append_var CXXFLAGS "-Wl,-q -I$VITASDK/arm-vita-eabi/include"
		append_var CXXFLAGS "-march=armv7-a -mtune=cortex-a9 -mfpu=neon -mfloat-abi=hard"
		append_var LDFLAGS "-Wl,-q -L$VITASDK/arm-vita-eabi/lib"
		#the next line fixes a crash when starting scumm-7-8 games (The Dig etc.)
		#when either -O2, -O3 or -Os optimizations are enabled
		append_var CXXFLAGS "-fno-optimize-sibling-calls"
		#the next line fixes "branch out of range" error in gob engine when -Os is used
		append_var CXXFLAGS "-mlong-calls"
		append_var CXXFLAGS "-mword-relocations"
		append_var CXXFLAGS "-fomit-frame-pointer"
		#ensure verbose output during linking to prevent buildbot kills after 1200 seconds
		if test "$_verbose_build" = yes ; then
			append_var LDFLAGS "-Wl,-v --verbose"
		fi
		if test "$_dynamic_modules" = yes ; then
			_detection_features_static=no
			_plugins_default=dynamic
		fi
		if test "$_debug_build" = no; then
		#optimize for smallest file size. This is necessary to prevent a crash on startup
		#due to the large executable file size when many engines are enabled
		#for example when --enable-all-engines is used to enable all the unstable engines
			_optimization_level=-Os
		fi
		if test "$_debug_build" = yes; then
			_optimization_level=-O0
			append_var DEFINES "-D__PSP2_DEBUG__"
			append_var LIBS "-lpsp2shell"
		fi
		add_line_to_config_mk 'PSP2 = 1'
		add_line_to_config_h "#define PREFIX \"${prefix}\""
		;;
	psp)
		_optimization_level=-O2
		_freetypepath="$PSPDEV/psp/bin"
		if test -z "$PKG_CONFIG_LIBDIR"; then
			PKG_CONFIG_LIBDIR="$PSPDEV/psp/lib/pkgconfig"
		fi
		append_var CXXFLAGS "-I$PSPSDK/include"
		# FIXME: Why is the following in CXXFLAGS and not in DEFINES? Change or document this.
		append_var CXXFLAGS "-D_PSP_FW_VERSION=150"
		append_var CXXFLAGS "-G0"
		add_line_to_config_mk 'PSP = 1'
		;;
	riscos)
		define_in_config_if_yes yes 'RISCOS'
		append_var LDFLAGS "-static"
		_optimization_level=-O3
		_port_mk="backends/platform/sdl/riscos/riscos.mk"
		_pandoc=yes
		_sdlconfig=sdl-config
		# RiscOS has no OpenGL support at all even though it's SDL based
		_opengl_mode=none
		if test "$_dynamic_modules" = yes ; then
			_plugins_default=dynamic
		fi
		_detection_features_full=no
		;;
	solaris*)
		append_var DEFINES "-DSOLARIS"
		append_var DEFINES "-DSYSTEM_NOT_SUPPORTING_D_TYPE"
		# Needs -lbind -lsocket for the timidity MIDI driver
		append_var LIBS "-lnsl -lsocket"
		;;
	switch)
		_pkgconfig="$DEVKITPRO/portlibs/switch/bin/aarch64-none-elf-pkg-config"
		_libcurlpath="$DEVKITPRO/portlibs/switch/bin"
		_sdlpath="$DEVKITPRO/portlibs/switch/bin"
		append_var DEFINES "-DSWITCH -D__SWITCH__ -DNINTENDO_SWITCH"
		append_var CXXFLAGS "-march=armv8-a -mtune=cortex-a57 -mtp=soft -fPIE -ftls-model=local-exec"
		append_var CXXFLAGS "-ffunction-sections -fdata-sections"
		append_var CXXFLAGS "-I$DEVKITPRO/libnx/include -I$DEVKITPRO/portlibs/switch/include"
		append_var LDFLAGS "-L$DEVKITPRO/libnx/lib -L$DEVKITPRO/portlibs/switch/lib"
		append_var LDFLAGS "-specs=$DEVKITPRO/libnx/switch.specs"
		add_line_to_config_mk 'SWITCH = 1'
		if test "$_debug_build" = yes; then
			append_var DEFINES "-D__SWITCH_DEBUG__"
		else
			_optimization_level=-O3
		fi
		;;
	wii)
		_optimization_level=-Os
		append_var CXXFLAGS "-mrvl"
		append_var CXXFLAGS "-mcpu=750"
		append_var CXXFLAGS "-meabi"
		append_var CXXFLAGS "-mhard-float"
		append_var CXXFLAGS "-ffunction-sections"
		append_var CXXFLAGS "-fdata-sections"
		append_var CXXFLAGS "-fmodulo-sched"
		append_var CXXFLAGS "-fuse-cxa-atexit"
		append_var CXXFLAGS "-I$DEVKITPRO/libogc/include"
		append_var CXXFLAGS "-I$DEVKITPRO/portlibs/ppc/include"
		# libogc is required to link the cc tests (includes _start())
		append_var LDFLAGS "-mrvl"
		append_var LDFLAGS "-mcpu=750"
		append_var LDFLAGS "-L$DEVKITPRO/libogc/lib/wii"
		append_var LDFLAGS "-L$DEVKITPRO/portlibs/ppc/lib"
		append_var LDFLAGS "-logc"
		if test "$_dynamic_modules" = "yes" ; then
			# retarded toolchain patch forces --gc-sections, overwrite it
			append_var LDFLAGS "-Wl,--no-gc-sections"
		fi
		;;
esac

if test -n "$_host"; then
	# Cross-compiling mode - add your target here if needed
	echo "Cross-compiling to $_host"
	case "$_host" in
		3ds)
			append_var DEFINES "-DDISABLE_FANCY_THEMES"
			append_var DEFINES "-DDISABLE_HELP_STRINGS"
			append_var DEFINES "-DDISABLE_NES_APU"
			_backend="3ds"
			_build_scalers=no
			_vkeybd=yes
			_mt32emu=no
			# Should use Tremor instead of Vorbis
			_vorbis=no
			_port_mk="backends/platform/3ds/3ds.mk"
			;;
		android-arm-v7a | android-arm64-v8a | android-x86 | android-x86_64 | ouya)
			# also __ANDROID__ is defined by Clang in the NDK
			DEFINES="$DEFINES -D__ANDROID_PLAIN_PORT__ -DANDROID_PLAIN_PORT"
			# we link a .so as default
			append_var LDFLAGS "-shared"
			append_var LDFLAGS "-Wl,-Bsymbolic,--no-undefined"
			append_var LDFLAGS "-static-libstdc++"
			HOSTEXEPRE=lib
			HOSTEXEEXT=.so
			_backend="android"
			_port_mk="backends/platform/$_backend/android.mk"
			_build_aspect=no
			_seq_midi=no
			_timidity=no
			;;
		arm-linux|arm*-linux-gnueabi|arm-*-linux)
			;;
		arm-vfp-riscos)
			append_var LDFLAGS "-L$GCCSDK_INSTALL_ENV/vfp/lib"
			append_var PLUGIN_LDFLAGS "-L$GCCSDK_INSTALL_ENV/vfp/lib"
			append_var CXXFLAGS "-isystem $GCCSDK_INSTALL_ENV/vfp/include"
			if test -z "$PKG_CONFIG_LIBDIR"; then
				PKG_CONFIG_LIBDIR="$GCCSDK_INSTALL_ENV/vfp/lib/pkgconfig"
			fi
			_sdlpath=$GCCSDK_INSTALL_ENV/vfp/bin
			_freetypepath=$GCCSDK_INSTALL_ENV/vfp/bin
			_libcurlpath=$GCCSDK_INSTALL_ENV/vfp/bin
			append_var CXXFLAGS "-march=armv6zk"
			append_var CXXFLAGS "-mtune=cortex-a9"
			append_var CXXFLAGS "-mfpu=vfp"
			append_var LDFLAGS "-mfpu=vfp"
			append_var PLUGIN_LDFLAGS "-mfpu=vfp"
			append_var ASFLAGS "-mfpu=vfp"
			;;
		arm-*riscos)
			append_var LDFLAGS "-L$GCCSDK_INSTALL_ENV/lib"
			append_var PLUGIN_LDFLAGS "-L$GCCSDK_INSTALL_ENV/lib"
			append_var CXXFLAGS "-isystem $GCCSDK_INSTALL_ENV/include"
			if test -z "$PKG_CONFIG_LIBDIR"; then
				PKG_CONFIG_LIBDIR="$GCCSDK_INSTALL_ENV/lib/pkgconfig"
			fi
			_sdlpath=$GCCSDK_INSTALL_ENV/bin
			_freetypepath=$GCCSDK_INSTALL_ENV/bin
			_libcurlpath=$GCCSDK_INSTALL_ENV/bin
			append_var CXXFLAGS "-march=armv3m"
			append_var CXXFLAGS "-mtune=xscale"
			_vorbis=no
			;;
		bfin*)
			;;
		caanoo)
			append_var DEFINES "-DCAANOO"
			if test "$_debug_build" = no; then
				# Use -O3 on the Caanoo for non-debug builds.
				_optimization_level=-O3
			fi
			append_var CXXFLAGS "-mcpu=arm926ej-s"
			append_var CXXFLAGS "-mtune=arm926ej-s"
			_backend="gph"
			_build_hq_scalers=no
			_savegame_timestamp=no
			_vkeybd=yes
			_seq_midi=no
			_mt32emu=no
			_timidity=no
			_port_mk="backends/platform/gph/caanoo-bundle.mk"
			;;
		*darwin*)
			_ranlib=$_host-ranlib
			_strip=$_host-strip
			;;
		dingux)
			append_var DEFINES "-DDISABLE_DOSBOX_OPL"
			append_var DEFINES "-DREDUCE_MEMORY_USAGE"
			append_var CXXFLAGS "-msoft-float"
			append_var CXXFLAGS "-mips32"
			_backend="dingux"
			_mt32emu=no
			_nuked_opl=no
			_optimization_level=-O3
			# Disable alsa midi to get the port build on OpenDingux toolchain
			_alsa=no
			# Disable cloud and SDL_Net due to outdated toolchain
			_cloud=no
			_sdlnet=no
			_libcurl=no
			_vkeybd=yes
			_build_hq_scalers=no
			# Force disable vorbis on dingux, it has terrible performance compared to tremor
			_vorbis=no
			# Force disable seq on dingux, no way to use it and it would get enabled by default with configure
			_seq_midi=no
			_port_mk="backends/platform/dingux/dingux.mk"
			;;
		wasm*-emscripten)
			_backend="sdl"
			# Disable cloud and SDL_Net as this is handled in the browser
			_cloud=no
			_sdlnet=no
			_libcurl=no
			_curl=no
			_ar="emar cr"
			_ranlib="emranlib"
			;;
		raspberrypi)
			_libcurlpath=$RPI_ROOT/usr/bin
			# This is needed because the official cross compiler doesn't have multiarch enabled
			# but Raspbian does.
			# Be careful as it's the linker (LDFLAGS) which must know about sysroot.
			# These are needed to build against Raspbian's libSDL.
			append_var LDFLAGS "--sysroot=$RPI_ROOT"
			append_var LDFLAGS "-B$RPI_ROOT/usr/lib/arm-linux-gnueabihf"
			append_var LDFLAGS "-Xlinker --rpath-link=$RPI_ROOT/usr/lib/arm-linux-gnueabihf/pulseaudio"
			append_var LDFLAGS "-Xlinker --rpath-link=$RPI_ROOT/usr/lib/arm-linux-gnueabihf"
			append_var LDFLAGS "-Xlinker --rpath-link=$RPI_ROOT/lib/arm-linux-gnueabihf"
			append_var CXXFLAGS "-isystem $RPI_ROOT/usr/include/arm-linux-gnueabihf"
			append_var CXXFLAGS "-I$RPI_ROOT/usr/include"
			# We prefer SDL2 on the Raspberry Pi: acceleration now depends on it
			# since SDL2 manages dispmanx/GLES2 very well internally.
			# SDL1 is bit-rotten on this platform.
			_sdlconfig=sdl2-config
			;;
		dreamcast)
			append_var DEFINES "-DDISABLE_DEFAULT_SAVEFILEMANAGER"
			append_var DEFINES "-DDISABLE_TEXT_CONSOLE"
			append_var DEFINES "-DDISABLE_COMMAND_LINE"
			# Enable serial debugging output only when --enable-debug is passed
			if test "$_release_build" = yes -o "$_debug_build" != yes; then
				append_var DEFINES "-DNOSERIAL"
			fi
			_optimization_level=-O3
			append_var CXXFLAGS "-funroll-loops"
			append_var CXXFLAGS "-fschedule-insns2"
			append_var CXXFLAGS "-fomit-frame-pointer"
			append_var CXXFLAGS "-fdelete-null-pointer-checks"
			_backend="dc"
			_build_scalers=no
			_build_aspect=no
			_tinygl=no
			# These two are needed due to shortcomings of the
			# detection systems.  Do not remove until auto-
			# detection works correctly.
			_mad=yes
			_zlib=yes
			_port_mk="backends/platform/dc/dreamcast.mk"
			;;
		ds)
			if test "$_dynamic_modules" = yes ; then
				_detection_features_static=no
				_plugins_default=dynamic
			fi
			_detection_features_full=no
			if test "$_debug_build" != yes; then
				append_var DEFINES "-DDISABLE_TEXT_CONSOLE"
			fi
			append_var DEFINES "-DDISABLE_HELP_STRINGS"
			append_var DEFINES "-DDISABLE_DOSBOX_OPL"
			append_var DEFINES "-DDISABLE_FANCY_THEMES"
			append_var DEFINES "-DDISABLE_NES_APU"
			append_var DEFINES "-DREDUCE_MEMORY_USAGE"
			append_var DEFINES "-DSTREAM_AUDIO_FROM_DISK"
			append_var DEFINES "-DVECTOR_RENDERER_FORMAT=1555"
			_backend="ds"
			_build_scalers=no
			_build_aspect=no
			_mt32emu=no
			_nuked_opl=no
			_tinygl=no
			_bink=no
			_lua=no
			_png=no
			_freetype2=no
			_port_mk="backends/platform/ds/ds.mk"
			;;
		gamecube)
			_backend="wii"
			_build_scalers=no
			_build_aspect=no
			_vkeybd=yes
			_mt32emu=no
			_port_mk="backends/platform/wii/wii.mk"
			add_line_to_config_mk 'GAMECUBE = 1'
			add_line_to_config_h '#define AUDIO_REVERSE_STEREO'
			add_line_to_config_h '#define GAMECUBE'
			add_line_to_config_h "/* #define DEBUG_WII_USBGECKO */"
			add_line_to_config_h "/* #define DEBUG_WII_MEMSTATS */"
			add_line_to_config_h "/* #define DEBUG_WII_GDB */"
			add_line_to_config_h "#define USE_WII_DI"
			;;
		gcw0)
			_sysroot=`$CXX --print-sysroot`
			_sdlpath=$_sysroot/usr/bin
			append_var DEFINES "-DGCW0"
			append_var DEFINES "-DREDUCE_MEMORY_USAGE"
			append_var CXXFLAGS "-mips32"
			_backend="dingux"
			_alsa=no
			_mt32emu=no
			_seq_midi=no
			_timidity=no
			_build_scalers=no
			_optimization_level=-O3
			_vkeybd=yes
			_vorbis=no
			_port_mk="backends/platform/dingux/dingux.mk"
			;;
		gp2x)
			append_var DEFINES "-DGP2X"
			append_var CXXFLAGS "-march=armv4t"
			append_var ASFLAGS "-mfloat-abi=soft"
			append_var LDFLAGS "-static"
			_backend="gph"
			_build_hq_scalers=no
			_savegame_timestamp=no
			_vkeybd=yes
			_seq_midi=no
			_mt32emu=no
			_timidity=no
			_port_mk="backends/platform/gph/gp2x-bundle.mk"
			;;
		gp2xwiz)
			append_var DEFINES "-DGP2XWIZ"
			append_var CXXFLAGS "-mcpu=arm926ej-s"
			append_var CXXFLAGS "-mtune=arm926ej-s"
			append_var ASFLAGS "-mfloat-abi=soft"
			_backend="gph"
			_build_hq_scalers=no
			_savegame_timestamp=no
			_vkeybd=yes
			_seq_midi=no
			_mt32emu=no
			_timidity=no
			_port_mk="backends/platform/gph/gp2xwiz-bundle.mk"
			;;
		iphone)
			add_line_to_config_mk 'IPHONE = 1'
			append_var DEFINES "-DIPHONE"
			append_var ASFLAGS "-arch armv6"
			_backend="iphone"
			_build_scalers=no
			_build_aspect=no
			_mt32emu=no
			_seq_midi=no
			_timidity=no
			;;
		ios7*)
			add_line_to_config_mk 'IPHONE = 1'
			append_var DEFINES "-DIPHONE -DIPHONE_IOS7 -DIPHONE_SANDBOXED"
			_backend="ios7"
			_seq_midi=no
			_timidity=no
			;;
		kos32)
			# neither pkg-config nor *-config work, so we setup everything manually
			_pkgconfig=/bin/false
			_pkg_config=no

			ZLIB_CFLAGS="-I${KOS32_SDK_DIR}/sources/zlib"
			if test "$_png" != no; then
				PNG_CFLAGS="-I${KOS32_SDK_DIR}/sources/libpng"
				PNG_LIBS="-lpng16 -lz"
				_png=yes
			fi
			JPEG_CFLAGS="-I${KOS32_SDK_DIR}/sources/libjpeg"

			FREETYPE2_STATIC_LIBS="-lfreetype"
			FREETYPE2_CFLAGS="-I${KOS32_SDK_DIR}/sources/freetype/include"
			_freetype_found="true"

			SDL_CFLAGS="-I${KOS32_SDK_DIR}/sources/SDL-1.2.2_newlib/include"
			SDL_LIBS="-lSDLn -lsound"
			_sdl=yes
			_sdlversion=1.2.2
			_backend="kolibrios"

			_timidity=no
			add_line_to_config_mk 'KOLIBRIOS = 1'
			add_line_to_config_mk 'KOS32_AUTOBUILD = '"${KOS32_AUTOBUILD}"
			add_line_to_config_mk 'KOS32_SDK_DIR = '"${KOS32_SDK_DIR}"
			_port_mk="backends/platform/sdl/kolibrios/kolibrios.mk"
			;;
		m68k-atari-mint)
			# auto -> yes (overriden by $_release_build = yes)
			if test "$_debug_build" = "no"; then
				# --disable-debug
				append_var LDFLAGS "-s"
			fi

			# auto -> no
			if test "$_optimizations" = "yes"; then
				# --enable-release, --enable-optimizations
				append_var CXXFLAGS "-fomit-frame-pointer"
			fi

			# auto -> no
			if test "$_release_build" = "yes"; then
				# --enable-release
				append_var DEFINES "-DNDEBUG"
			fi

			_seq_midi=no
			_timidity=no
			;;
		maemo)
			_optimization_level=-Os
			append_var CXXFLAGS "-mcpu=arm926ej-s"
			append_var CXXFLAGS "-fomit-frame-pointer"
			append_var INCLUDES "-I/usr/X11R6/include"
			append_var LIBS "-L/usr/lib"

			_backend="maemo"
			_vkeybd=yes
			_build_hq_scalers=no
			_mt32emu=no
			_alsa=no
			_mad=yes
			_tremor=yes
			_zlib=yes
			;;
		*mingw32*)
			_sdlconfig=$_host-sdl2-config
			_libcurlconfig=$_host-curl-config
			_pkgconfig=$_host-pkg-config
			_windres=$_host-windres
			_ar="$_host-ar cr"
			_ranlib=$_host-ranlib
			_strip=$_host-strip
			if `which $_host-peldd >/dev/null 2>&1`; then
				_ldd="$_host-peldd -t --ignore-errors"
			fi
			;;
		mips-sgi*)
			append_var LDFLAGS "-static-libgcc"
			append_var LIBS "-laudio"
			;;
		miyoo)
			_sysroot=`$CXX --print-sysroot`
			_sdlpath=$_sysroot/usr/bin
			append_var DEFINES  "-DMIYOO -DREDUCE_MEMORY_USAGE -DUNCACHED_PLUGINS"
			append_var CXXFLAGS "-march=armv5te -mtune=arm926ej-s -ffast-math -fomit-frame-pointer -ffunction-sections -fdata-sections"
			append_var LDFLAGS  "-march=armv5te -mtune=arm926ej-s -ffast-math -fomit-frame-pointer -ffunction-sections -fdata-sections"
			append_var LDFLAGS  "-O3 -Wl,--as-needed,--gc-sections"
			_vkeybd=yes
			_alsa=no
			# Explicitly use tremor
			_vorbis=no
			_tremor=yes
			_mt32emu=no
			_timidity=no
			_fluidsynth=no
			_highres=no
			# TODO: There's some problem with libFLAC availability. Fix and reenable
			_flac=no
			_seq_midi=no
			_nuked_opl=no
			_curl=no
			_optimization_level=-O3
			_backend="miyoo"
			_port_mk="backends/platform/sdl/miyoo/miyoo.mk"
			add_line_to_config_mk 'MIYOO = 1'
			add_line_to_config_mk "MIYOO_TARGET = miyoo"
			;;
		miyoomini)
			_sysroot=`$CXX --print-sysroot`
			_sdlpath=$_sysroot/usr/bin
			append_var DEFINES  "-DMIYOOMINI -DREDUCE_MEMORY_USAGE -DUNCACHED_PLUGINS"
			append_var CXXFLAGS "-marm -mtune=cortex-a7 -mfpu=neon-vfpv4 -mfloat-abi=hard -O3 -march=armv7ve -ffast-math -fomit-frame-pointer -fno-strength-reduce"
			append_var LDFLAGS  "-marm -mtune=cortex-a7 -mfpu=neon-vfpv4 -mfloat-abi=hard -O3 -march=armv7ve -ffast-math -fomit-frame-pointer -fno-strength-reduce"
			append_var LDFLAGS  "-O3 -Wl,--as-needed,--gc-sections"
			_vkeybd=yes
			_alsa=no
			_mt32emu=no
			_timidity=no
			_fluidsynth=no
			_highres=yes
			_seq_midi=no
			_nuked_opl=no
			_curl=no
			_optimization_level=-O3
			_backend="miyoo"
			_port_mk="backends/platform/sdl/miyoo/miyoo.mk"
			add_line_to_config_mk 'MIYOO = 1'
			add_line_to_config_mk "MIYOO_TARGET = miyoomini"
			;;
		n64)
			append_var CXXFLAGS "-mno-extern-sdata"
			append_var CXXFLAGS "--param max-inline-insns-auto=20"
			append_var CXXFLAGS "-fomit-frame-pointer"
			append_var CXXFLAGS "-march=vr4300"
			append_var CXXFLAGS "-mtune=vr4300"
			append_var CXXFLAGS "-mhard-float"
			append_var LDFLAGS "-march=vr4300"
			append_var LDFLAGS "-mtune=vr4300"
			append_var LDFLAGS "-nodefaultlibs"
			append_var LDFLAGS "-nostartfiles"
			append_var LDFLAGS "-mno-crt0"
			append_var LDFLAGS "-L$N64SDK/hkz-libn64"
			append_var LDFLAGS "-L$N64SDK/lib"
			append_var LDFLAGS "-T n64ld_cpp.x -Xlinker -Map -Xlinker scummvm.map"
			_backend="n64"
			_mt32emu=no
			_build_scalers=no
			_build_aspect=no
			_savegame_timestamp=no
			_translation=no
			_text_console=no
			_vkeybd=yes
			_dynamic_modules=no
			_plugins_default=static
			# Force use of libmad, libtremor and zlib
			_mad=no
			_tremor=yes
			_zlib=yes
			_port_mk="backends/platform/n64/n64.mk"
			;;
		neuros)
			append_var DEFINES "-DNEUROS"
			_backend='null'
			_build_hq_scalers=no
			_mt32emu=no
			;;
		opendingux-*)
			_sysroot=`$CXX --print-sysroot`
			_sdlpath=$_sysroot/usr/bin
			append_var DEFINES  "-DDINGUX -DOPENDINGUX -DREDUCE_MEMORY_USAGE -DUNCACHED_PLUGINS"
			append_var CXXFLAGS "-ffast-math -fdata-sections -ffunction-sections -mplt"
			append_var LDFLAGS  "-ffast-math -fdata-sections -ffunction-sections -mplt"
			append_var LDFLAGS  "-O3 -Wl,--as-needed,--gc-sections"
			if [ x"$_dynamic_modules" != xyes ]; then
				append_var CXXFLAGS "-mno-shared"
				append_var LDFLAGS  "-mno-shared"
			fi
			_vkeybd=yes
			_alsa=no
			_vorbis=no
			_mt32emu=no
			_timidity=no
			_fluidsynth=no
			_theoradec=no
			_seq_midi=no
			_nuked_opl=no
			_curl=no
			_optimization_level=-O3
			_backend="opendingux"
			_port_mk="backends/platform/sdl/opendingux/opendingux.mk"
			add_line_to_config_mk 'OPENDINGUX = 1'
			add_line_to_config_mk "OPENDINGUX_TARGET = ${_host#opendingux-}"
			case "$_host" in
				opendingux-gcw0)
					;;
				opendingux-lepus)
					append_var DEFINES "-DLEPUS"
					_highres=no
					_build_hq_scalers=no
					;;
				opendingux-rs90)
					append_var DEFINES "-DRS90 -DDISABLE_FANCY_THEMES"
					_16bit=no
					_highres=no
					# Scaling is handled by IPU
					_build_scalers=no
					;;
				*)
					echo "WARNING: Unknown OpenDingux target"
					;;
			esac
			;;
		openpandora)
			# Use -O3 on the OpenPandora for optimized builds.
			if test "$_optimizations" = yes; then
				_optimization_level=-O3
			fi

			append_var CXXFLAGS "-march=armv7-a"
			append_var CXXFLAGS "-mtune=cortex-a8"
			append_var CXXFLAGS "-mfloat-abi=softfp"
			append_var CXXFLAGS "-mfpu=neon"
			append_var CXXFLAGS "-fsingle-precision-constant"
			append_var ASFLAGS "-mfloat-abi=softfp"
			_backend="openpandora"
			_build_hq_scalers=yes
			_build_edge_scalers=no
			_vkeybd=no
			_mt32emu=no
			_seq_midi=no
			_port_mk="backends/platform/openpandora/op-bundle.mk"
			;;
		ppc-amigaos)
			# PPC Linker requires this to fix relocation errors
			append_var CXXFLAGS "-mlongcall"

			_port_mk="backends/platform/sdl/amigaos/amigaos.mk"
			;;
		ppc-morphos)
			# PPC Linker requires this to fix relocation errors
			append_var CXXFLAGS "-mlongcall"

			_port_mk="backends/platform/sdl/morphos/morphos.mk"
			;;
		ps3)
			_timidity=no
			_vkeybd=yes
			_port_mk="backends/platform/sdl/ps3/ps3.mk"
			;;
		psp2)
			_backend="psp2"
			_vkeybd=yes
			_build_scalers=yes
			_build_hq_scalers=no
			_mt32emu=no
			_timidity=no
			_port_mk="backends/platform/sdl/psp2/psp2.mk"
			#the -gcc- variants allow link time optimization
			_ar="$_host_alias-gcc-ar cr"
			_ranlib=$_host_alias-gcc-ranlib
			;;
		psp)
			_backend="psp"
			_build_scalers=no
			_build_aspect=no
			_mt32emu=no
			_port_mk="backends/platform/psp/psp.mk"
			;;
		tvos)
			add_line_to_config_mk 'IPHONE = 1'
			append_var DEFINES "-DIPHONE -DIPHONE_IOS7 -DIPHONE_SANDBOXED"
			_backend="ios7"
			_seq_midi=no
			_timidity=no
			;;
		samsungtv)
			append_var DEFINES "-DSAMSUNGTV"
			append_var DEFINES "-DDISABLE_COMMAND_LINE"
			append_var ASFLAGS "-mfpu=vfp"
			HOSTEXEEXT=".so"
			_backend="samsungtv"
			_mt32emu=no
			_vkeybd=yes
			;;
		switch)
			_backend="switch"
			# Switch port crashes when switching between SDL2 and OpenGL
			# graphics. But OpenGL works when it is enabled from the start.
			# This might be related to a known crash on OpenGL de-init due
			# to the OpenGL implementation on this platform.
			_vkeybd=yes
			_port_mk="backends/platform/sdl/switch/switch.mk"
			;;
		wii)
			_backend="wii"
			_build_scalers=no
			_build_aspect=no
			_vkeybd=yes
			_port_mk="backends/platform/wii/wii.mk"
			add_line_to_config_mk 'GAMECUBE = 0'
			add_line_to_config_h '#define AUDIO_REVERSE_STEREO'
			add_line_to_config_h "#define DEBUG_WII_USBGECKO"
			add_line_to_config_h "/* #define DEBUG_WII_MEMSTATS */"
			add_line_to_config_h "/* #define DEBUG_WII_GDB */"
			add_line_to_config_h "#define USE_WII_DI"
			add_line_to_config_h "#define USE_WII_SMB"
			add_line_to_config_h "#define USE_WII_KBD"
			;;
		*)
			echo "WARNING: Unknown target, continuing with auto-detected values"
			;;
	esac
fi

#
# Backend related stuff
#
case $_backend in
	3ds)
		;;
	android)
		append_var DEFINES "-DREDUCE_MEMORY_USAGE"
		append_var DEFINES "-DNONSTANDARD_PORT"
		append_var INCLUDES '-I$(srcdir)/backends/platform/'$_backend
		append_var CXXFLAGS "-Wa,--noexecstack"
		append_var LDFLAGS "-Wl,-z,noexecstack"
		# removed the following directive - was causing compilation issues when not also explicitly using --disable-mt32emu
		# append_var INCLUDES "-isystem $ANDROID_NDK/sources/cxx-stl/system/include"
		_sdl=no
		if test "$_host" = ouya; then
			_sdlnet=no
		fi
		;;
	atari)
		define_in_config_if_yes yes "ATARI"
		append_var DEFINES "-DDISABLE_LAUNCHERDISPLAY_GRID"
		#append_var DEFINES "-DDISABLE_FANCY_THEMES"
		#append_var DEFINES "-DDISABLE_SID"
		#append_var DEFINES "-DDISABLE_NES_APU"
		#append_var DEFINES "-DDISABLE_DOSBOX_OPL"
		append_var ASFLAGS "-m68030"
		append_var CXXFLAGS "-m68020-60"
		append_var LDFLAGS "-m68020-60"
		;;
	dc)
		append_var INCLUDES '-I$(srcdir)/backends/platform/dc'
		append_var INCLUDES "-isystem $RONINDIR/include"
		append_var LDFLAGS "-Wl,-Ttext,0x8c010000"
		append_var LDFLAGS "-nostartfiles"
		append_var LDFLAGS "-L$RONINDIR/lib"
		append_var LDFLAGS "$RONINDIR/lib/crt0.o"
		# Enable serial debugging output only when --enable-debug is passed
		if test "$_release_build" = yes -o "$_debug_build" != yes; then
			append_var LIBS "-lronin-noserial -lm"
			append_var LDFLAGS "-lronin-noserial -lm"
		else
			append_var LIBS "-lronin -lm"
			append_var LDFLAGS "-lronin -lm"
		fi
		;;
	dingux)
		append_var DEFINES "-DDINGUX"
		_sdlconfig=sdl-config
		_sdl=auto
		;;
	ds)
		append_var INCLUDES '-I$(srcdir)/backends/platform/ds'
		;;
	gph)
		# On the GPH devices we want fancy themes but do not want the load/save thumbnail grid.
		append_var DEFINES "-DDISABLE_SAVELOADCHOOSER_GRID"
		append_var DEFINES "-DGPH_DEVICE"
		append_var DEFINES "-DREDUCE_MEMORY_USAGE"
		if test "$_debug_build" = yes; then
			append_var DEFINES "-DGPH_DEBUG"
		fi
		_sdlconfig=sdl-config
		_sdl=auto
		;;
	iphone)
		append_var LIBS "-lobjc -framework UIKit -framework CoreGraphics -framework OpenGLES"
		append_var LIBS "-framework QuartzCore -framework CoreFoundation -framework Foundation"
		append_var LIBS "-framework AudioToolbox -framework CoreAudio"
		;;
	ios7)
		append_var LIBS "-lobjc -framework UIKit -framework CoreGraphics -framework OpenGLES"
		append_var LIBS "-framework QuartzCore -framework CoreFoundation -framework Foundation"
		append_var LIBS "-framework AudioToolbox -framework CoreAudio -framework SystemConfiguration "
		append_var LIBS "-framework GameController -framework Accelerate"
		if test "$_host" = 'tvos'; then
			append_var LDFLAGS "-mtvos-version-min=9 -arch arm64"
			append_var CFLAGS "-mtvos-version-min=9 -arch arm64"
			append_var CXXFLAGS "-mtvos-version-min=9 -arch arm64"
		elif test "$_host_cpu" = 'aarch64' ; then
			append_var LDFLAGS "-miphoneos-version-min=7.1 -arch arm64"
			append_var CFLAGS "-miphoneos-version-min=7.1 -arch arm64"
			append_var CXXFLAGS "-miphoneos-version-min=7.1 -arch arm64"
		else
			append_var LDFLAGS "-miphoneos-version-min=7.1 -arch armv7"
			append_var CFLAGS "-miphoneos-version-min=7.1 -arch armv7"
			append_var CXXFLAGS "-miphoneos-version-min=7.1 -arch armv7"
		fi
		if test -n "$SDKROOT"; then
			append_var LDFLAGS "-mlinker-version=134.9 -B/usr/local/bin/arm-apple-darwin11-"
			append_var CFLAGS "-isysroot $SDKROOT -F$SDKROOT/System/Library/Frameworks"
			append_var CXXFLAGS "-isysroot $SDKROOT -I$SDKROOT/usr/include/c++/4.2.1 -F$SDKROOT/System/Library/Frameworks"
		fi
		;;
	kolibrios)
		_sdl=yes
		append_var MODULES "backends/platform/sdl"
		;;
	maemo)
		append_var DEFINES "-DMAEMO"
		append_var LIBS "-lX11"
		_sdlconfig=sdl-config
		_sdl=auto
		;;
	n64)
		append_var INCLUDES '-I$(N64SDK)/include'
		append_var INCLUDES '-I$(N64SDK)/mips64/include'
		append_var INCLUDES '-I$(N64SDK)/hkz-libn64'
		append_var INCLUDES '-I$(srcdir)/backends/platform/n64'
		append_var LIBS "-lpakfs -lframfs -ln64 -ln64utils -lromfs"
		append_var LIBS "-lm -lstdc++ -lz"
		;;
	null)
		append_var DEFINES "-DUSE_NULL_DRIVER"
		_text_console=yes
		;;
	opendingux | miyoo | miyoomini)
		_sdlconfig=sdl-config
		_sdl=auto
		append_var MODULES "backends/platform/sdl"
		;;
	openpandora)
		append_var DEFINES "-DOPENPANDORA"
		append_var DEFINES "-DREDUCE_MEMORY_USAGE"
		if test "$_release_build" = no; then
			append_var DEFINES "-DOP_DEBUG"
		fi
		_sdl=auto
		;;
	psp)
		append_var DEFINES "-D__PSP__"
		append_var DEFINES "-DDISABLE_COMMAND_LINE"
		append_var DEFINES "-DDISABLE_DOSBOX_OPL"
		append_var LIBS "-lpng"
		append_var LIBS "-Wl,-Map,mapfile.txt"
		_nuked_opl=no
		;;
	psp2)
		append_var LIBS "-lSDL2 -lSceCommonDialog_stub"
		append_var LIBS "-lSceSysmodule_stub -lSceDisplay_stub -lSceGxm_stub"
		append_var LIBS "-lSceAudio_stub -lSceAudioIn_stub -lSceCtrl_stub -lScePower_stub"
		append_var LIBS "-lSceNet_stub -lSceNetCtl_stub"
		append_var LIBS "-lSceAppMgr_stub -lSceAppUtil_stub -lScePgf_stub"
		append_var LIBS "-lSceTouch_stub -lSceHid_stub -lSceMotion_stub"
		_sdl=yes
		_sdlversion=2.0.0
		append_var MODULES "backends/platform/sdl"
		append_var INCLUDES "-I$VITASDK/arm-vita-eabi/include/SDL2"
		;;
	samsungtv)
		append_var DEFINES "-DSAMSUNGTV"
		append_var LDFLAGS "-shared"
		append_var LDFLAGS "-fpic"
		_sdl=auto
		;;
	sdl)
		_sdl=auto
		;;
	switch)
		_sdl=auto
		append_var MODULES "backends/platform/sdl"
		;;
	wii)
		append_var DEFINES "-D__WII__"
		append_var DEFINES "-DGEKKO"
		case $_host_os in
		gamecube)
			append_var LIBS "-lgxflux -liso9660 -lfat -logc -ldb"
			;;
		*)
			append_var LIBS "-lgxflux -ldi -liso9660 -ltinysmb -lfat -lwiiuse -lbte -logc -lwiikeyboard -ldb"
			;;
		esac
		;;
	*)
		echo "support for $_backend backend not implemented in configure script yet"
		exit 1
		;;
esac

append_var MODULES "backends/platform/$_backend"

#
# Check for pkg-config
#
echocheck "pkg-config"
_pkg_config=no
command -v $_pkgconfig >/dev/null 2>&1 && _pkg_config=yes
echo "$_pkg_config"

if test "$_pkg_config" = yes && test -n "$_host" && test -z "$PKG_CONFIG_LIBDIR" && test "$_pkgconfig" = pkg-config; then
	echo "WARNING: When cross-compiling PKG_CONFIG_LIBDIR must be set to the location of the .pc files for the target"
fi

#
# Setup SDL specifics for SDL based backends
#
if test "$_sdl" = auto ; then
	find_sdlconfig
	append_var SDL_CFLAGS "`$_sdlconfig --cflags | sed 's/[[:space:]]*-Dmain=SDL_main//g'`"
	if test "$_static_build" = yes ; then
		append_var SDL_LIBS "`$_sdlconfig --static-libs`"
	else
		append_var SDL_LIBS "`$_sdlconfig --libs`"
	fi
	_sdlversion=`$_sdlconfig --version`

	echocheck "SDL"
	_sdl=no
	cat > $TMPC << EOF
#include "SDL.h"
int main(int argc, char *argv[]) { SDL_Init(0); return 0; }
EOF
	cc_check $LIBS $SDL_LIBS $INCLUDES $SDL_CFLAGS && _sdl=yes
	echo "$_sdl"
	if test "$_sdl" = no ; then
		exit 1
	fi
fi

_sdlMajorVersionNumber=0
if test "$_sdl" = yes ; then
	append_var DEFINES "-DSDL_BACKEND"
	add_line_to_config_mk "SDL_BACKEND = 1"
	append_var INCLUDES "$SDL_CFLAGS"
	append_var LIBS "$SDL_LIBS"
	case $_sdlversion in
		2.*.*)
			append_var DEFINES "-DUSE_SDL2"
			add_line_to_config_mk "USE_SDL2 = 1"
			_sdlMajorVersionNumber=2
			;;
		1.2.*)
			_sdlMajorVersionNumber=1
			;;
		*)
			echo "support for SDL $_sdlversion not implemented yet"
			exit 1
			;;
	esac
fi

#
# Some platforms (eg. Android, iOS) may use an edited version
# of SDL-net or SDL2-net that does not require SDL or SDL2 respectively
#
if test "$_sdlnet" = auto ; then
	# If SDL2 was detected, then test for SDL2_net exclusively
	# If SDL was detected, then test for SDL_net exclusively
	# If neither SDL nor SDL2 detected, then test for both (SDL2_net success takes priority)
	set_var SDL2_NET_LIBS   "$SDL_NET_LIBS"
	set_var SDL2_NET_CFLAGS "$SDL_NET_CFLAGS"
	set_var SDL1_NET_LIBS   "$SDL_NET_LIBS"
	set_var SDL1_NET_CFLAGS "$SDL_NET_CFLAGS"

	if test "$_sdl" = no || test "$_sdlMajorVersionNumber" = 2; then
		if test "$_pkg_config" = "yes" && $_pkgconfig --exists SDL2_net; then
			append_var SDL2_NET_LIBS "`$_pkgconfig --libs SDL2_net`"
			append_var SDL2_NET_CFLAGS "`$_pkgconfig --cflags SDL2_net | sed 's/[[:space:]]*-Dmain=SDL_main//g'`"
		else
			append_var SDL2_NET_LIBS "-lSDL2_net"
		fi
	fi

	if test "$_sdl" = no || test "$_sdlMajorVersionNumber" = 1; then
		if test "$_pkg_config" = "yes" && $_pkgconfig --exists SDL_net; then
			append_var SDL1_NET_LIBS "`$_pkgconfig --libs SDL_net`"
			append_var SDL1_NET_CFLAGS "`$_pkgconfig --cflags SDL_net | sed 's/[[:space:]]*-Dmain=SDL_main//g'`"
		else
			append_var SDL1_NET_LIBS "-lSDL_net"
		fi
	fi

	# Check for SDL_Net
	echocheck "SDL_Net"
	_sdlnet=no
	cat > $TMPC << EOF
#include "SDL_net.h"
int main(int argc, char *argv[]) { SDLNet_Init(); return 0; }
EOF

	cc_check $SDL2_NET_LIBS $LIBS $INCLUDES $SDL2_NET_CFLAGS && _sdlnet=yes
	if test "$_sdlnet" = yes ; then
		set_var SDL_NET_LIBS   "$SDL2_NET_LIBS"
		set_var SDL_NET_CFLAGS "$SDL2_NET_CFLAGS"
		add_line_to_config_mk "SDL_NET_MAJOR = 2"
	else
		cat > $TMPC << EOF
#include "SDL_net.h"
int main(int argc, char *argv[]) { SDLNet_Init(); return 0; }
EOF
		cc_check $SDL1_NET_LIBS $LIBS $INCLUDES $SDL1_NET_CFLAGS && _sdlnet=yes
		if test "$_sdlnet" = yes ; then
			set_var SDL_NET_LIBS   "$SDL1_NET_LIBS"
			set_var SDL_NET_CFLAGS "$SDL1_NET_CFLAGS"
			add_line_to_config_mk "SDL_NET_MAJOR = 1"
		fi
	fi

	if test "$_sdlnet" = yes ; then
		# Some platforms require SDL to be after SDL_Net, thus we prepend var
		prepend_var LIBS "$SDL_NET_LIBS"
		append_var INCLUDES "$SDL_NET_CFLAGS"
	fi
	define_in_config_if_no "$_sdl" 'WITHOUT_SDL'
	define_in_config_if_yes "$_sdlnet" 'USE_SDL_NET'
	echo "$_sdlnet"
fi

#
# Check for stuff required for ENet to compile
#
if test "$_enet" = yes ; then
	case "$_host_os" in
		mingw*)
			# Skip for mingw.
			;;
		*)
			echo "Checks for ENet..."

				echo_n "   "
				echocheck "sendmsg"
				cat > $TMPC << EOF
#include <sys/types.h>
#include <sys/socket.h>
int main(void) { return sendmsg(0, 0, 0); }
EOF
				cc_check
				if test "$TMPR" -eq 0; then
					echo "yes"
				else
					echo "no, required for ENet.  Disabling."
					_enet=no
				fi

				echo_n "   "
				echocheck "recvmsg"
				cat > $TMPC << EOF
#include <sys/types.h>
#include <sys/socket.h>
int main(void) { return recvmsg(0, 0, 0); }
EOF
				cc_check
				if test "$TMPR" -eq 0; then
					echo "yes"
				else
					echo "no, required for ENet.  Disabling."
					_enet=no
				fi
			;;
	esac
fi

#
# Check whether ENet networking support is requested
#
define_in_config_if_yes "$_enet" 'USE_ENET'

#
# Check and set additional stuff needed for ENet.
#
if test "$_enet" = yes ; then
	case "$_host_os" in
		mingw*)
			# Additional libraries.
			append_var LIBS "-lwinmm -lws2_32"
			;;

		*)
			# Check for features and define.
			echo "Optional checks for ENet..."

			echo_n "   "
			echocheck "getaddrinfo"
			cat > $TMPC << EOF
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
int main(void) { return getaddrinfo(0, 0, 0, 0); }
EOF
			cc_check
			if test "$TMPR" -eq 0; then
				append_var DEFINES "-DHAS_GETADDRINFO"
				echo "yes"
			else
				echo "no"
			fi

			echo_n "   "
			echocheck "getnameinfo"
			cat > $TMPC << EOF
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
int main(void) { return getnameinfo(0, 0, 0, 0, 0, 0, 0); }
EOF
			cc_check
			if test "$TMPR" -eq 0; then
				append_var DEFINES "-DHAS_GETNAMEINFO"
				echo "yes"
			else
				echo "no"
			fi

			echo_n "   "
			echocheck "gethostbyaddr_r"
			cat > $TMPC << EOF
#include <netdb.h>
int main(void) { return gethostbyaddr_r(0, 0, 0, 0, 0, 0, 0, 0); }
EOF
			cc_check
			if test "$TMPR" -eq 0; then
				append_var DEFINES "-DHAS_GETHOSTBYADDR_R"
				echo "yes"
			else
				echo "no"
			fi

			echo_n "   "
			echocheck "gethostbyname_r"
			cat > $TMPC << EOF
#include <netdb.h>
int main(void) { return gethostbyname_r(0, 0, 0, 0, 0, 0); }
EOF
			cc_check
			if test "$TMPR" -eq 0; then
				append_var DEFINES "-DHAS_GETHOSTBYNAME_R"
				echo "yes"
			else
				echo "no"
			fi

			echo_n "   "
			echocheck "poll"
			cat > $TMPC << EOF
#include <poll.h>
int main(void) { return poll(0, 0, 0); }
EOF
			cc_check
			if test "$TMPR" -eq 0; then
				append_var DEFINES "-DHAS_POLL"
				echo "yes"
			else
				echo "no"
			fi

			echo_n "   "
			echocheck "fcntl"
			cat > $TMPC << EOF
#include <unistd.h>
#include <fcntl.h>
int main(void) { return fcntl(0, 0); }
EOF
			cc_check
			if test "$TMPR" -eq 0; then
				append_var DEFINES "-DHAS_FCNTL"
				echo "yes"
			else
				echo "no"
			fi

			echo_n "   "
			echocheck "inet_pton"
			cat > $TMPC << EOF
#include <sys/socket.h>
#include <arpa/inet.h>
int main(void) { return inet_pton(0, 0, 0); }
EOF
			cc_check
			if test "$TMPR" -eq 0; then
				append_var DEFINES "-DHAS_INET_PTON"
				echo "yes"
			else
				echo "no"
			fi

			echo_n "   "
			echocheck "inet_ntop"
			cat > $TMPC << EOF
#include <sys/socket.h>
#include <arpa/inet.h>
int main(void) { inet_ntop(0, 0, 0, 0); return 0; }
EOF
			cc_check
			if test "$TMPR" -eq 0; then
				append_var DEFINES "-DHAS_INET_NTOP"
				echo "yes"
			else
				echo "no"
			fi

			echo_n "   "
			echocheck "msghdr.msg_flags"
			cat > $TMPC << EOF
#include <sys/socket.h>
struct msghdr msg;
int main(void) { return msg.msg_flags; }
EOF
			cc_check
			if test "$TMPR" -eq 0; then
				append_var DEFINES "-DHAS_MSGHDR_FLAGS"
				echo "yes"
			else
				echo "no"
			fi

			echo_n "   "
			echocheck "socklen_t"
			cat > $TMPC << EOF
#include <sys/socket.h>
int main(void) { socklen_t len = 0; return 0; }
EOF
			cc_check
			if test "$TMPR" -eq 0; then
				append_var DEFINES "-DHAS_SOCKLEN_T"
				echo "yes"
			else
				echo "no"
			fi
			;;
	esac
fi

#
# Enable 16bit support only for backends which support it
#
case $_backend in
	3ds | android | dingux | dc | ds | gph | iphone | ios7 | kolibrios | maemo | null | opendingux | miyoomini | miyoo | openpandora | psp | psp2 | samsungtv | sdl | switch | wii)
		if test "$_16bit" = auto ; then
			_16bit=yes
		else
			_16bit=no
		fi
		;;
	*)
		_16bit=no
		;;
esac

#
# Enable High resolution engines (>320x240) support only for backends which support it
#
case $_host in
	caanoo | ds | dingux | gcw0 | gp2x | gp2xwiz)
		if test "$_highres" = yes ; then
			_highres=yes
		else
			_highres=no
		fi
		;;
	*)
		if test "$_highres" = no ; then
			_highres=no
		else
			_highres=yes
		fi
		;;
esac

#
# Enable Event Recorder only for backends that support it
#
case $_backend in
	sdl)
		;;
	*)
		_eventrec=no
		;;
esac

#
# Disable savegame timestamp support for backends which don't have a reliable real time clock
#
case $_backend in
	gph | n64)
		if test "$_savegame_timestamp" = auto ; then
			_savegame_timestamp=no
		else
			_savegame_timestamp=yes
		fi
		;;
	*)
		if test "$_savegame_timestamp" = auto ; then
			_savegame_timestamp=yes
		else
			_savegame_timestamp=no
		fi
		;;
esac

#
# Determine whether host is POSIX compliant, or at least POSIX
# compatible enough to support our POSIX code (including dlsym(),
# mkdir() and some other APIs).
#
# TODO: Instead of basing this on the host name, we should really base
# this on the presence of features (such as the dlsym and mkdir APIs).
#
echo_n "Checking if host is POSIX compliant... "
case $_host_os in
	amigaos* | dreamcast | ds | gamecube | kolibrios | mingw* | morphos | n64 | ps3 | psp2 | psp | riscos | wii)
		_posix=no
		;;
	3ds | android | beos* | bsd* | cygwin* | darwin* | dragonfly* | freebsd* | gnu* | gph-linux | haiku* | hpux* | iphone | ios7 | irix*| k*bsd*-gnu* | linux* | maemo | mint* | netbsd* | openbsd* | serenity* | solaris* | sunos* | switch | uclinux*)
		_posix=yes
		;;
	os2-emx*)
		_posix=yes	# FIXME: Really???
		;;
	emscripten)
		_posix=yes
		;;
	*)
		# given this is a shell script, we might assume some type of posix.
		# However, the host system might be a totally different one, so
		# we can assume nothing about it.
		# Indeed, as mentioned further above, we really should test for the
		# presences of relevant APIs on the host anyway...
		_posix=no
		;;
esac
echo $_posix

if test "$_posix" = yes ; then
	append_var DEFINES "-DPOSIX"
	add_line_to_config_mk 'POSIX = 1'

	echo_n "Checking if posix_spawn is supported... "
		cat > $TMPC << EOF
#include <spawn.h>
int main(void) { return posix_spawn(0, 0, 0, 0, 0, 0); }
EOF
	cc_check && test "$_host_os" != "emscripten" && _has_posix_spawn=yes
	echo $_has_posix_spawn
	if test "$_has_posix_spawn" = yes ; then
		append_var DEFINES "-DHAS_POSIX_SPAWN"
	fi
fi

#
# Check for 64-bit file offset compatibility
#
# This is currently only used by StdioStream. If nothing is found,
# you'll be limited to <2GB files, which still covers the vast majority
# of supported games.
#
case $_host_os in
	mingw*)
		# StdioStream just uses _ftelli64
		;;
	*)
		echo_n "Checking if fseeko with 64-bit off_t is supported... "
		cat > $TMPC << EOF
#include <stdio.h>
#include <sys/types.h> /* off_t on legacy systems */
int main() {
	static int test_array[1 - 2 * !(sizeof(off_t) >= 8)];
	fseeko(stdin, 0, SEEK_SET);
	test_array[0] = 0;
	return 0;
}
EOF
		cc_check_no_clean && _has_fseeko_offt_64=yes
		# Good, there's fseeko with a 64-bit off_t by default
		if test "$_has_fseeko_offt_64" = yes ; then
			echo yes
			append_var DEFINES "-DHAS_FSEEKO_OFFT_64"
		else
			# Otherwise, when not cross-compiling, try with LFS_CFLAGS
			if test -z "$_host"; then
				TMPFLAGS=`getconf LFS_CFLAGS 2>/dev/null`
				if test $? -eq 0 && test ! -z "$TMPFLAGS" && test "$TMPFLAGS" != undefined ; then
					cc_check_no_clean $TMPFLAGS && _has_fseeko_offt_64=yes
					if test "$_has_fseeko_offt_64" = yes ; then
						echo "yes (adding $TMPFLAGS)"
						append_var DEFINES "-DHAS_FSEEKO_OFFT_64"
						append_var CXXFLAGS "$TMPFLAGS"
					fi
				fi
			fi

			# Otherwise, try the usual magical suspects
			if test "$_has_fseeko_offt_64" = no ; then
				# note: -D__LARGE64_FILES is another option, but it may be broken on
				# some platforms, so add it to your platform defines instead, if it
				# requires it and you've checked that the result works.
				for largeflag in "-D_FILE_OFFSET_BITS=64" "-D_LARGE_FILES" "-D_LARGEFILE_SOURCE" ; do
					cc_check_no_clean $largeflag && _has_fseeko_offt_64=yes
					if test "$_has_fseeko_offt_64" = yes ; then
						echo "yes (adding $largeflag)"
						append_var DEFINES "-DHAS_FSEEKO_OFFT_64"
						append_var CXXFLAGS "$largeflag"
						break
					fi
				done
			fi

			# Otherwise, fseeko64 is your last chance
			if test "$_has_fseeko_offt_64" = no ; then
				echo no
				echo_n "Checking if fseeko64 is supported... "
				cat > $TMPC << EOF
#include <stdio.h>
int main() { fseeko64(stdin, 0, SEEK_SET); return 0; }
EOF
				cc_check_no_clean -D_LARGEFILE64_SOURCE && _has_fseeko64=yes
				echo $_has_fseeko64
				if test "$_has_fseeko64" = yes ; then
					append_var DEFINES "-DHAS_FSEEKO64"
					append_var CXXFLAGS "-D_LARGEFILE64_SOURCE"
				fi
			fi
		fi
		cc_check_clean
		;;
esac

#
# Check whether to enable a verbose build
#
echo_n "Checking whether to have a verbose build... "
echo "$_verbose_build"
add_to_config_mk_if_yes "$_verbose_build" 'VERBOSE_BUILD = 1'


#
# If a specific optimization level was requested, enable optimizations
#
if test -n "$_optimization_level" ; then
	# Ports will specify an optimization level and expect that to be enabled
	if test "$_optimizations" != no ; then
		_optimizations=yes
	fi
else
	_optimization_level=$_default_optimization_level
fi

#
# Check whether to enable optimizations
#
if test "$_optimizations" = yes ; then
	# Enable optimizations. This also
	# makes it possible to use -Wuninitialized, so let's do that.
	append_var CXXFLAGS "$_optimization_level"
	append_var CXXFLAGS "-Wuninitialized"
fi

#
# Check whether plugin support is requested and possible
#
echo_n "Checking whether building plugins was requested... "
echo "$_dynamic_modules"
_mak_plugins=

if test "$_dynamic_modules" = yes ; then
	echo_n "Checking whether building plugins is supported... "
	case $_host_os in
	3ds)
		_elf_loader=yes
		append_var DEFINES "-DUNCACHED_PLUGINS"
_mak_plugins='
PLUGIN_LDFLAGS		+= -Wl,-T$(srcdir)/backends/plugins/3ds/plugin.ld -march=armv6k -mfloat-abi=hard
'
		;;
	amigaos)
		_plugin_prefix=""
		_plugin_suffix=".plugin"
		append_var CXXFLAGS "-fPIC"
		append_var LIBS "-use-dynld"
		append_var LIBS "-lauto"
		append_var _strip "-x"
_mak_plugins='
PLUGIN_EXTRA_DEPS =
PLUGIN_LDFLAGS  += -shared
PRE_OBJS_FLAGS  := -Wl,-export-dynamic -Wl,-whole-archive
POST_OBJS_FLAGS := -Wl,-no-whole-archive
'
		;;
	android)
		_plugin_prefix="lib"
		_plugin_suffix=".so"
		append_var CXXFLAGS "-fpic"
		append_var LIBS "-ldl"
# Work around an Android 2.0+ run-time linker bug:
# The linker doesn't actually look in previously
# loaded libraries when trying to resolve symbols -
# effectively turning all dlopen(RTLD_GLOBAL) calls
# into dlopen(RTLD_LOCAL). It *does* look in
# DT_NEEDED libraries, so the workaround is to add an
# (otherwise unnecessary) dependency from plugins back
# to the main libscummvm.so.
_mak_plugins='
PLUGIN_EXTRA_DEPS = libscummvm.so
PLUGIN_LDFLAGS  += $(LDFLAGS) -L. -lscummvm
PRE_OBJS_FLAGS  := -Wl,-export-dynamic -Wl,-whole-archive
POST_OBJS_FLAGS := -Wl,-no-whole-archive
'
		;;
	darwin*)
		_plugin_prefix=""
		_plugin_suffix=".plugin"
		append_var LIBS "-ldl"
		append_var _strip "-x"
_mak_plugins='
PLUGIN_EXTRA_DEPS = $(EXECUTABLE)
PLUGIN_LDFLAGS  += -bundle -bundle_loader $(EXECUTABLE) -exported_symbols_list "$(srcdir)/plugin.exp"
PRE_OBJS_FLAGS  := -all_load
POST_OBJS_FLAGS :=
'
		;;
	dreamcast)
		_plugin_prefix=""
		_plugin_suffix=".plg"
		append_var DEFINES "-DUNCACHED_PLUGINS"
_mak_plugins='
PLUGIN_EXTRA_DEPS	= $(abspath $(srcdir)/backends/platform/dc/plugin.x $(srcdir)/backends/platform/dc/plugin.syms) $(EXECUTABLE) backends/platform/dc/plugin_head.o
PLUGIN_LDFLAGS		+= -ml -m4-single-only -nostartfiles -Wl,-q,-T$(srcdir)/backends/platform/dc/plugin.x,--just-symbols,$(EXECUTABLE),--retain-symbols-file,$(srcdir)/backends/platform/dc/plugin.syms backends/platform/dc/plugin_head.o
PRE_OBJS_FLAGS		:= -Wl,--whole-archive
POST_OBJS_FLAGS		:= -Wl,--no-whole-archive
'
		;;
	ds)
		_elf_loader=yes
		append_var DEFINES "-DELF_LOADER_CXA_ATEXIT"
		append_var DEFINES "-DUNCACHED_PLUGINS"
		append_var DEFINES "-DELF_NO_MEM_MANAGER"
_mak_plugins='
PLUGIN_LDFLAGS		+= -Wl,-T$(srcdir)/backends/plugins/ds/plugin.ld -mthumb -mthumb-interwork -mfloat-abi=soft
'
		;;
	emscripten)
		_plugin_prefix="lib"
		_plugin_suffix=".so"
		append_var DEFINES "-DUNCACHED_PLUGINS"
		append_var CXXFLAGS "-fPIC"
		append_var LIBS ""
_mak_plugins='
PLUGIN_EXTRA_DEPS =
PLUGIN_LDFLAGS  += $(LDFLAGS) -s SIDE_MODULE=1 -s ASYNCIFY_IMPORTS=["*"] -s EXPORT_ALL=1
PRE_OBJS_FLAGS  := -s MAIN_MODULE=1 -s EXPORT_ALL=1
POST_OBJS_FLAGS :=
'
		;;
	freebsd* | openbsd*)
		_plugin_prefix="lib"
		_plugin_suffix=".so"
		append_var CXXFLAGS "-fPIC"
_mak_plugins='
PLUGIN_EXTRA_DEPS =
PLUGIN_LDFLAGS  += -shared
PRE_OBJS_FLAGS  := -Wl,-export-dynamic -Wl,-whole-archive
POST_OBJS_FLAGS := -Wl,-no-whole-archive
'
		;;
	gamecube | wii)
		_elf_loader=yes
		append_var DEFINES "-DELF_LOADER_CXA_ATEXIT"
		append_var DEFINES "-DUNCACHED_PLUGINS"
_mak_plugins='
PLUGIN_LDFLAGS		+= -Wl,-T$(srcdir)/backends/plugins/wii/plugin.ld
'
		;;
	gph*)
		_plugin_prefix=""
		_plugin_suffix=".plugin"
		append_var CXXFLAGS "-fpic"
		append_var LIBS "-ldl"
_mak_plugins='
PLUGIN_EXTRA_DEPS = $(EXECUTABLE)
PLUGIN_LDFLAGS  += -shared
PRE_OBJS_FLAGS  := -Wl,-export-dynamic -Wl,-whole-archive
POST_OBJS_FLAGS := -Wl,-no-whole-archive
'
		;;
	irix*)
		_plugin_prefix="lib"
		_plugin_suffix=".so"
		append_var CXXFLAGS "-fpic"
		append_var LIBS "-ldl"
_mak_plugins='
PLUGIN_EXTRA_DEPS =
PLUGIN_LDFLAGS  += -shared -static-libgcc
PRE_OBJS_FLAGS  := -Wl,-export-dynamic -Wl,-whole-archive
POST_OBJS_FLAGS := -Wl,-no-whole-archive
'
		;;
	kolibrios)
		_plugin_suffix=".svm.dll"
		append_var DEFINES "-DUNCACHED_PLUGINS"
_mak_plugins='
PLUGIN_EXTRA_DEPS   = $(EXECUTABLE)
PLUGIN_LDFLAGS      += -specs=$(srcdir)/backends/platform/sdl/kolibrios/kolibrios.spec -mdll -Wl,-q,--retain-symbols-file,$(srcdir)/backends/plugins/elf/plugin.syms -Wl,--enable-auto-import ./libscummvm.a
PRE_OBJS_FLAGS      := -Wl,--whole-archive
POST_OBJS_FLAGS     := -Wl,--export-all-symbols -Wl,--no-whole-archive -Wl,--out-implib,./libscummvm.a
'
		;;

	linux* | gnu* | k*bsd*-gnu*)
		_plugin_prefix="lib"
		_plugin_suffix=".so"
		append_var CXXFLAGS "-fPIC"
		append_var LIBS "-ldl"
_mak_plugins='
PLUGIN_EXTRA_DEPS =
PLUGIN_LDFLAGS  += -shared
PRE_OBJS_FLAGS  := -Wl,-export-dynamic -Wl,-whole-archive
POST_OBJS_FLAGS := -Wl,-no-whole-archive
'
		;;
	*cygwin* | *mingw32* | mingw64)
		_plugin_prefix=""
		_plugin_suffix=".dll"
_mak_plugins='
PLUGIN_EXTRA_DEPS	= $(EXECUTABLE)
PLUGIN_LDFLAGS		+= -Wl,--enable-auto-import -shared ./libscummvm.a
PRE_OBJS_FLAGS		:= -Wl,--whole-archive
POST_OBJS_FLAGS		:= -Wl,--export-all-symbols -Wl,--no-whole-archive -Wl,--out-implib,./libscummvm.a
'
		;;
	morphos)
		_plugin_prefix="lib"
		_plugin_suffix=".so"
		append_var CXXFLAGS "-fPIC"
		append_var LIBS "-use-dynld"
_mak_plugins='
PLUGIN_EXTRA_DEPS =
PLUGIN_LDFLAGS  += -shared
PRE_OBJS_FLAGS  := -Wl,-export-dynamic -Wl,-whole-archive
POST_OBJS_FLAGS := -Wl,-no-whole-archive
'
		;;
	psp)
		_elf_loader=yes
		append_var DEFINES "-DUNCACHED_PLUGINS"
_mak_plugins='
LDFLAGS				+= -Wl,-T$(srcdir)/backends/plugins/psp/main_prog.ld  -Wl,-zmax-page-size=128
PLUGIN_LDFLAGS		+= -Wl,-T$(srcdir)/backends/plugins/psp/plugin.ld -Wl,-zmax-page-size=128 -lstdc++
'
		;;
	psp2)
		_plugin_prefix=""
		# This will create an ELF with a suprx extension which we will have to mangle when packaging
		_plugin_suffix=".suprx"
		append_var CXXFLAGS "-fuse-cxa-atexit"
		append_var DEFINES "-DUNCACHED_PLUGINS"
_mak_plugins='
PLUGIN_EXTRA_DEPS	= $(EXECUTABLE) backends/plugins/psp2/plugin.o
PLUGIN_LDFLAGS		+= -nostartfiles -nodefaultlibs backends/plugins/psp2/plugin.o -Wl,-q -Xlinker --just-symbols -Xlinker $(EXECUTABLE) -lgcc
PRE_OBJS_FLAGS		:= -Wl,--whole-archive
POST_OBJS_FLAGS		:= -Wl,--no-whole-archive
'
		;;
	riscos)
		_elf_loader=yes
		append_var DEFINES "-DELF_LOADER_CXA_ATEXIT"
		append_var CXXFLAGS "-fuse-cxa-atexit"
		append_var DEFINES "-DUNCACHED_PLUGINS"
		append_var DEFINES "-DELF_NO_MEM_MANAGER"
_mak_plugins='
PLUGIN_EXTRA_DEPS	+= backends/plugins/riscos/plugin.o
PLUGIN_LDFLAGS		+= -static -Wl,-T$(srcdir)/backends/plugins/riscos/plugin.ld backends/plugins/riscos/plugin.o -Wl,--wrap=__rt_stkovf_split_small -Wl,--wrap=__rt_stkovf_split_big
'
		;;
	*)
		_dynamic_modules=no
		_mak_plugins=
		;;
	esac
	echo "$_dynamic_modules"
fi

#
# Check whether integrated ELF loader support is requested
#
define_in_config_if_yes "$_elf_loader" 'USE_ELF_LOADER'

if test "$_elf_loader" = yes; then
	_plugin_prefix=""
	_plugin_suffix=".plg"
	_mak_plugins='
PLUGIN_EXTRA_DEPS	= $(EXECUTABLE)
PLUGIN_LDFLAGS		+= -nostartfiles backends/plugins/elf/version.o -Wl,-q,--retain-symbols-file,$(srcdir)/backends/plugins/elf/plugin.syms -Xlinker --just-symbols -Xlinker $(EXECUTABLE)
PRE_OBJS_FLAGS		:= -Wl,--whole-archive
POST_OBJS_FLAGS		:= -Wl,--no-whole-archive
'"$_mak_plugins"
fi

#
# Set up some common plugin settings in config.h and config.mk, if enabled
#
define_in_config_if_yes "$_dynamic_modules" 'DYNAMIC_MODULES'

if test "$_dynamic_modules" = yes ; then
	add_line_to_config_h "#define PLUGIN_PREFIX	\"$_plugin_prefix\""
	add_line_to_config_h "#define PLUGIN_SUFFIX	\"$_plugin_suffix\""
	add_line_to_config_mk "PLUGIN_PREFIX := $_plugin_prefix"
	add_line_to_config_mk "PLUGIN_SUFFIX := $_plugin_suffix"
fi

#
# Set up a define for detection to be used as static or not
#
define_in_config_if_yes "$_detection_features_static" "DETECTION_STATIC"
echo_n "Checking if detection features building statically... "
echo "$_detection_features_static"

#
# Set up a define for detection to be used as static or not
#
define_in_config_if_yes "$_detection_features_full" "DETECTION_FULL"
echo_n "Checking if building detection features for all engines... "
echo "$_detection_features_full"

#
# Check whether integrated MT-32 emulator support is requested
#
define_in_config_if_yes "$_mt32emu" 'USE_MT32EMU'

#
# Check whether Lua support is requested
#
define_in_config_if_yes "$_lua" 'USE_LUA'

#
# Check whether Nuked OPL emulator support is disabled
#
define_in_config_if_no "$_nuked_opl" 'DISABLE_NUKED_OPL'

#
# Check whether 16bit color support is requested
#
define_in_config_if_yes "$_16bit" 'USE_RGB_COLOR'

#
# Check whether High resolution graphics support is requested
#
define_in_config_if_yes "$_highres" 'USE_HIGHRES'

#
# Check whether save games use the current time as default description
#
define_in_config_if_yes "$_savegame_timestamp" 'USE_SAVEGAME_TIMESTAMP'

#
# Check whether to enable the (hq (and edge)) scalers
#
if test "$_build_scalers" = no ; then
	_build_hq_scalers=no
	_build_edge_scalers=no
elif test "$_build_hq_scalers" = no ; then
	_build_edge_scalers=no
fi

define_in_config_if_yes "$_build_scalers" 'USE_SCALERS'

define_in_config_if_yes "$_build_hq_scalers" 'USE_HQ_SCALERS'

define_in_config_if_yes "$_build_edge_scalers" 'USE_EDGE_SCALERS'

define_in_config_if_yes "$_build_aspect" 'USE_ASPECT'

#
# Check for math lib
#
cat > $TMPC << EOF
int main(void) { return 0; }
EOF
cc_check -lm && append_var LIBS "-lm"

#
# Check for Ogg
#
echocheck "Ogg"
if test "$_ogg" = auto ; then
	_ogg=no
	cat > $TMPC << EOF
#include <ogg/ogg.h>
int main(void) { return 0; }
EOF
	cc_check $OGG_CFLAGS $OGG_LIBS -logg && _ogg=yes
fi
define_in_config_if_yes "$_ogg" 'USE_OGG'
echo "$_ogg"
#
# Check for TTS
#
echocheck "TTS libraries"
if test "$_tts" = auto ; then
	_tts=no
	case $_host_os in
		mingw*)
			cat > $TMPC << EOF
#include <windows.h>
#include <servprov.h>
#include <sapi.h>
int main(void) { return 0; }
EOF
			cc_check -lsapi -lole32 && _tts=yes
			;;
		linux* | freebsd* | openbsd*)
			cat > $TMPC << EOF
#include <speech-dispatcher/libspeechd.h>
int main(void) { return 0; }
EOF
			cc_check -lspeechd && _tts=yes
			;;
		darwin*)
			# Check the API is available. The most recent API we need is for the NSSpeechSynthesizerDelegate protocol
			cat > $TMPC << EOF
#include <AppKit/NSSpeechSynthesizer.h>
@interface SpeechDelegate : NSObject<NSSpeechSynthesizerDelegate> {
}
@end
int main(void) { return 0; }
EOF
			cc_check -ObjC++ -lobjc && _tts=yes
			;;
	esac
fi
echo "$_tts"

#
# Check for Vorbis
#
echocheck "Vorbis"
if test "$_vorbis" = auto ; then
	_vorbis=no
	cat > $TMPC << EOF
#include <vorbis/codec.h>
int main(void) { vorbis_packet_blocksize(0,0); return 0; }
EOF
	if test "$_ogg" = yes ; then
		cc_check $OGG_CFLAGS $OGG_LIBS $VORBIS_CFLAGS $VORBIS_LIBS \
			-lvorbisfile -lvorbis -logg && _vorbis=yes
	else
		cc_check $VORBIS_CFLAGS $VORBIS_LIBS \
			-lvorbisfile -lvorbis && _vorbis=yes
	fi
fi
if test "$_vorbis" = yes ; then
	append_var LIBS "$VORBIS_LIBS -lvorbisfile -lvorbis"
	append_var INCLUDES "$VORBIS_CFLAGS"
fi
define_in_config_if_yes "$_vorbis" 'USE_VORBIS'
echo "$_vorbis"

#
# Check for Tremor
#
echocheck "Tremor"
if test "$_tremolo" = yes ; then
	_tremor=yes
fi

if test "$_tremor" = auto ; then
	_tremor=no
	cat > $TMPC << EOF
#include <tremor/ivorbiscodec.h>
int main(void) { vorbis_info_init(0); return 0; }
EOF
	if test "$_ogg" = yes ; then
		cc_check $TREMOR_CFLAGS $TREMOR_LIBS $OGG_CFLAGS $OGG_LIBS \
			-lvorbisidec -logg && _tremor=yes
	else
		cc_check $TREMOR_CFLAGS $TREMOR_LIBS -lvorbisidec && \
		_tremor=yes
	fi
fi
if test "$_tremor" = yes && test "$_vorbis" = no; then
	add_line_to_config_h '#define USE_TREMOR'
	add_line_to_config_h '#define USE_VORBIS'
	if test "$_tremolo" = yes ; then
		add_line_to_config_h '#define USE_TREMOLO'
		append_var LIBS "$TREMOR_LIBS -ltremolo"
	else
		append_var LIBS "$TREMOR_LIBS -lvorbisidec"
	fi
	append_var INCLUDES "$TREMOR_CFLAGS"
else
	if test "$_vorbis" = yes; then
		_tremor="no (Vorbis/Tremor support is mutually exclusive)"
	fi
	add_line_to_config_h '#undef USE_TREMOR'
fi
add_to_config_mk_if_yes "$_tremor" 'USE_TREMOR = 1'
echo "$_tremor"

#
# Check for IEEE1284 for OPL2lPT
#
echocheck "OPL2LPT"
if test "$_opl2lpt" = yes ; then
	_opl2lpt=no
	cat > $TMPC << EOF
#include <ieee1284.h>
struct parport_list parports;
int main(void) { ieee1284_find_ports(&parports, 0); return 0; }
EOF
	cc_check $IEEE1284_CFLAGS $IEEE1284_LIBS -lieee1284 && \
	_opl2lpt=yes
fi
if test "$_opl2lpt" = yes; then
	append_var LIBS "$IEEE1284_LIBS -lieee1284"
	append_var INCLUDES "$IEEE1284_CFLAGS"
fi
define_in_config_if_yes "$_opl2lpt" 'ENABLE_OPL2LPT'
echo "$_opl2lpt"

#
# Check for retrowave for RetroWave OPL3
#
echocheck "RetroWave OPL3"
if test "$_retrowave" = auto ; then
	_retrowave=no
	cat > $TMPC << EOF
#include <RetroWaveLib/RetroWave.h>
RetroWaveContext context;
int main(void) { retrowave_init(&context); return 0; }
EOF
	cc_check $RETROWAVE_CFLAGS $RETROWAVE_LIBS -lRetroWave && \
	_retrowave=yes
fi
if test "$_retrowave" = yes; then
	append_var LIBS "$RETROWAVE_LIBS -lRetroWave"
	append_var INCLUDES "$RETROWAVE_CFLAGS"
fi
define_in_config_if_yes "$_retrowave" 'USE_RETROWAVE'
echo "$_retrowave"

#
# Check for FLAC
#
echocheck "FLAC >= 1.0.1"
if test "$_flac" = auto ; then
	_flac=no
	cat > $TMPC << EOF
#include <FLAC/stream_decoder.h>
#include <FLAC/format.h>
int main(void) {
	FLAC__StreamDecoder *decoder = FLAC__stream_decoder_new();
	FLAC__stream_decoder_delete(decoder);
	return FLAC__STREAM_SYNC_LEN >> 30; /* guaranteed to be 0 */
}
EOF
	if test "$_ogg" = yes ; then
		cc_check $FLAC_CFLAGS $FLAC_LIBS $OGG_CFLAGS $OGG_LIBS \
			-lFLAC -logg && _flac=yes
	else
		cc_check $FLAC_CFLAGS $FLAC_LIBS \
			-lFLAC && _flac=yes
	fi
fi
if test "$_flac" = yes ; then
	append_var LIBS "$FLAC_LIBS -lFLAC"
	append_var INCLUDES "$FLAC_CFLAGS"
fi
define_in_config_if_yes "$_flac" 'USE_FLAC'
echo "$_flac"

# Add the link to ogg only after vorbis, tremor and flac as it might be used by those.
if test "$_ogg" = yes ; then
	append_var LIBS "$OGG_LIBS -logg"
	append_var INCLUDES "$OGG_CFLAGS"
fi

#
# Check for MAD (MP3 library)
#
echocheck "MAD"
if test "$_mad" = auto ; then
	_mad=no
	cat > $TMPC << EOF
#include <mad.h>
int main(void) { return 0; }
EOF
	cc_check $MAD_CFLAGS $MAD_LIBS -lmad && _mad=yes
fi
if test "$_mad" = yes ; then
	append_var LIBS "$MAD_LIBS -lmad"
	append_var INCLUDES "$MAD_CFLAGS"
fi
define_in_config_if_yes "$_mad" 'USE_MAD'
echo "$_mad"

#
# Check for ALSA
#
echocheck "ALSA >= 0.9"
if test "$_alsa" = auto ; then
	_alsa=no
	cat > $TMPC << EOF
#include <alsa/asoundlib.h>
int main(void) { return (!(SND_LIB_MAJOR==0 && SND_LIB_MINOR==9)); }
EOF
	cc_check $ALSA_CFLAGS $ALSA_LIBS -lasound && _alsa=yes
fi
if test "$_alsa" = yes ; then
	append_var LIBS "$ALSA_LIBS -lasound"
	append_var INCLUDES "$ALSA_CFLAGS"
fi
define_in_config_if_yes "$_alsa" 'USE_ALSA'
echo "$_alsa"

#
# Check for libjpeg
#
echocheck "libjpeg >= v6b"
if test "$_jpeg" = auto ; then
	_jpeg=no
	cat > $TMPC << EOF
#include <stdio.h>
#include <jpeglib.h>
int main(void) {
#if JPEG_LIB_VERSION >= 62
#else
  syntax error
#endif
  return 0;
}
EOF
	cc_check $JPEG_CFLAGS $JPEG_LIBS -ljpeg && _jpeg=yes
fi
if test "$_jpeg" = yes ; then
	append_var LIBS "$JPEG_LIBS -ljpeg"
	append_var INCLUDES "$JPEG_CFLAGS"
fi
define_in_config_if_yes "$_jpeg" 'USE_JPEG'
echo "$_jpeg"

#
# Check for PNG
#
echocheck "PNG >= 1.2.8"
if test "$_pkg_config" = "yes" && $_pkgconfig --exists libpng; then
	append_var PNG_LIBS "`$_pkgconfig --libs libpng`"
	append_var PNG_CFLAGS "`$_pkgconfig --cflags libpng`"
else
	append_var PNG_LIBS "-lpng -lz"
fi
if test "$_png" = auto ; then
	_png=no
	cat > $TMPC << EOF
#include <png.h>
int main(void) {
#if PNG_LIBPNG_VER >= 10208
#else
  syntax error
#endif
  return 0;
}
EOF
	cc_check $PNG_CFLAGS $PNG_LIBS && _png=yes
fi
if test "$_png" = yes ; then
	append_var LIBS "$PNG_LIBS"
	append_var INCLUDES "$PNG_CFLAGS"
fi
define_in_config_if_yes "$_png" 'USE_PNG'
echo "$_png"

#
# Check for GIF
#
echocheck "GIF >= 5.0.0"
if test "$_pkg_config" = "yes" && $_pkgconfig --exists libgif; then
	append_var GIF_LIBS "`$_pkgconfig --libs libgif`"
	append_var GIF_CFLAGS "`$_pkgconfig --cflags libgif`"
else
	append_var GIF_LIBS "-lgif"
fi
if test "$_gif" = auto ; then
	_gif=no
	cat > $TMPC << EOF
#include <gif_lib.h>
int main(void) {
#if GIFLIB_MAJOR >= 5
#else
  syntax error
#endif
  return 0;
}
EOF
	cc_check $GIF_CFLAGS $GIF_LIBS && _gif=yes
fi
if test "$_gif" = yes ; then
	append_var LIBS "$GIF_LIBS"
	append_var INCLUDES "$GIF_CFLAGS"
fi
define_in_config_if_yes "$_gif" 'USE_GIF'
echo "$_gif"

#
# Check for Theora Decoder
#
echocheck "libtheoradec >= 1.0"
if test "$_vorbis" = no && test "$_tremor" = no ; then
	echo "skipping. no vorbis"
	_theoradec=notsupported
fi
if test "$_theoradec" = auto ; then
	_theoradec=no
	cat > $TMPC << EOF
#include <theora/theoradec.h>
int main(void) { th_ycbcr_buffer yuv; th_decode_ycbcr_out(NULL, yuv);  }
EOF
	cc_check $THEORADEC_CFLAGS $THEORADEC_LIBS -ltheoradec && _theoradec=yes
fi
if test "$_theoradec" = yes ; then
	append_var LIBS "$THEORADEC_LIBS -ltheoradec"
	append_var INCLUDES "$THEORADEC_CFLAGS"
fi
define_in_config_if_yes "$_theoradec" 'USE_THEORADEC'
if test ! "$_theoradec" = notsupported ; then
	echo "$_theoradec"
fi

#
# Check for VP8/VP9 Decoder
#
echocheck "libvpx >= 1.6"
if test "$_vorbis" = no && test "$_tremor" = no ; then
	echo "skipping. no vorbis"
	_vpx=notsupported
fi
if test "$_vpx" = auto ; then
	_vpx=no

	if test "$_pkg_config" = "yes" && $_pkgconfig --exists vpx; then
		append_var VPX_LIBS "`$_pkgconfig --libs vpx`"
		append_var VPX_CFLAGS "`$_pkgconfig --cflags vpx`"
	else
		append_var VPX_LIBS "-lvpx"
	fi

	cat > $TMPC << EOF
#include "vpx/vpx_decoder.h"
#include "vpx/vp8dx.h"
int main(void) {
	vpx_codec_ctx_t codec;
	vpx_codec_dec_init(&codec, &vpx_codec_vp8_dx_algo, NULL, 0);

#if VPX_DECODER_ABI_VERSION >= 10 // Check for 1.6
#else
  syntax error
#endif
	return 0;
}
EOF
	cc_check $VPX_CFLAGS $VPX_LIBS && _vpx=yes
fi
if test "$_vpx" = yes ; then
	append_var LIBS "$VPX_LIBS -lvpx"
	append_var INCLUDES "$VPX_CFLAGS"
fi
define_in_config_if_yes "$_vpx" 'USE_VPX'
if test ! "$_vpx" = notsupported ; then
	echo "$_vpx"
fi

#
# Check for the AAC decoder
#
echocheck "libfaad"
if test "$_faad" = auto ; then
	_faad=no
	cat > $TMPC << EOF
#include <neaacdec.h>
int main(void) { NeAACDecGetCapabilities(); return 0; }
EOF
	cc_check $FAAD_CFLAGS $FAAD_LIBS -lfaad && _faad=yes
fi
if test "$_faad" = yes ; then
	append_var LIBS "$FAAD_LIBS -lfaad"
	append_var INCLUDES "$FAAD_CFLAGS"
fi
define_in_config_if_yes "$_faad" 'USE_FAAD'
echo "$_faad"

#
# Check for SEQ MIDI
#
echocheck "SEQ MIDI"
if test "$_seq_midi" = auto ; then
	# TODO: Test for /dev/sequencer presence? Or maybe just for /dev ?
	# For now, we just always enable it when "posix" mode is on (backends
	# that do not want it can disable it by setting _seq_midi=no).
	_seq_midi="$_posix"
fi
define_in_config_h_if_yes "$_seq_midi" 'USE_SEQ_MIDI'
echo "$_seq_midi"

#
# Check for sndio
#
echocheck "sndio"
if test "$_sndio" = auto ; then
	_sndio=no
	cat > $TMPC << EOF
#include <sndio.h>
int main(void) { struct sio_par par; sio_initpar(&par); return 0; }
EOF
	cc_check $SNDIO_CFLAGS $SNDIO_LIBS -lsndio && _sndio=yes
fi
if test "$_sndio" = yes ; then
	append_var LIBS "$SNDIO_LIBS -lsndio"
	append_var INCLUDES "$SNDIO_CFLAGS"
fi
define_in_config_h_if_yes "$_sndio" 'USE_SNDIO'
echo "$_sndio"

#
# Check for TiMidity(++)
#
echocheck "TiMidity"
if test "$_timidity" = auto ; then
	# TODO: Is there a good possibility of auto detecting whether we
	# should include TiMidity support? It can only be used on Unix
	# currently so we use that as "detection" for now.
	_timidity="$_posix"
fi
define_in_config_h_if_yes "$_timidity" 'USE_TIMIDITY'
echo "$_timidity"

#
# Check for ZLib
#
echocheck "zlib"
if test "$_zlib" = auto ; then
	_zlib=no
	cat > $TMPC << EOF
#include <string.h>
#include <zlib.h>
int main(void) { return strcmp(ZLIB_VERSION, zlibVersion()); }
EOF
	cc_check $ZLIB_CFLAGS $ZLIB_LIBS -lz && _zlib=yes
fi
if test "$_zlib" = yes ; then
	append_var ZLIB_LIBS "-lz"
	append_var LIBS "$ZLIB_LIBS"
	append_var INCLUDES "$ZLIB_CFLAGS"
fi
define_in_config_if_yes "$_zlib" 'USE_ZLIB'
echo "$_zlib"

#
# Check for LibMPEG2
#
echocheck "libmpeg2 >= 0.4.0"
if test "$_mpeg2" = auto ; then
	_mpeg2=no
	cat > $TMPC << EOF
typedef signed $type_1_byte int8_t;
typedef signed $type_2_byte int16_t;
typedef signed $type_4_byte int32_t;

typedef unsigned $type_1_byte uint8_t;
typedef unsigned $type_2_byte uint16_t;
typedef unsigned $type_4_byte uint32_t;

extern "C" {
#include <mpeg2dec/mpeg2.h>
}

int main(void) {
	#if MPEG2_RELEASE < MPEG2_VERSION(0, 4, 0)
	#error libmpeg2 version too low
	#endif

	/* mpeg2_state_t first appears in 0.4.0 */
	mpeg2_state_t state;

	return 0;
}
EOF

	if test -n "$_host"; then
		# don't execute while cross compiling
		cc_check $MPEG2_CFLAGS $MPEG2_LIBS -lmpeg2 && _mpeg2=yes
	else
		cc_check_no_clean $MPEG2_CFLAGS $MPEG2_LIBS -lmpeg2 && $TMPO$HOSTEXEEXT && _mpeg2=yes
		cc_check_clean
	fi
fi
if test "$_mpeg2" = yes ; then
	append_var INCLUDES "$MPEG2_CFLAGS"
	append_var LIBS "$MPEG2_LIBS -lmpeg2"
fi
define_in_config_if_yes "$_mpeg2" 'USE_MPEG2'
echo "$_mpeg2"

#
# Check for liba52
#
echocheck "liba52"
if test "$_a52" = auto ; then
	_a52=no
	cat > $TMPC << EOF
typedef signed $type_1_byte int8_t;
typedef signed $type_2_byte int16_t;
typedef signed $type_4_byte int32_t;

typedef unsigned $type_1_byte uint8_t;
typedef unsigned $type_2_byte uint16_t;
typedef unsigned $type_4_byte uint32_t;

extern "C" {
#include <a52dec/a52.h>
}

int main(void) {
	a52_state_t *state = a52_init(0);
	a52_free(state);
	return 0;
}
EOF

	if test -n "$_host"; then
		# don't execute while cross compiling
		cc_check $A52_CFLAGS $A52_LIBS -la52 && _a52=yes
	else
		cc_check_no_clean $A52_CFLAGS $A52_LIBS -la52 && $TMPO$HOSTEXEEXT 2>/dev/null && _a52=yes
		cc_check_clean
	fi
fi
if test "$_a52" = yes ; then
	INCLUDES="$INCLUDES $A52_FLAGS"
	LIBS="$LIBS $A52_LIBS -la52"
fi
define_in_config_if_yes "$_a52" 'USE_A52'
echo "$_a52"

#
# Check for Sparkle if updates support is enabled
#
case $_host_os in
	darwin*)
		echocheck "Sparkle"
		if test "$_updates" = no; then
			_sparkle=no
		else
			if test -z $_sparklepath; then
				_sparklepath=/Library/Frameworks
			fi
			SPARKLE_CFLAGS="-F$_sparklepath"
			SPARKLE_LIBS="-F$_sparklepath"
			if test "$_sparkle" = auto ; then
				_sparkle=no
				cat > $TMPC << EOF
#include <Cocoa/Cocoa.h>
#include <Sparkle/Sparkle.h>
int main(void) { SUUpdater *updater = [SUUpdater sharedUpdater]; return 0; }
EOF
				cc_check $SPARKLE_CFLAGS $SPARKLE_LIBS -framework Sparkle -ObjC++ -lobjc && _sparkle=yes
			fi
			if test "$_sparkle" = yes ; then
				append_var LIBS "$SPARKLE_LIBS -framework Sparkle"
				append_var INCLUDES "$SPARKLE_CFLAGS"
			fi
			define_in_config_if_yes "$_sparkle" 'USE_SPARKLE'
		fi
		echo "$_sparkle"
	;;
	mingw*)
		echocheck "Sparkle"
		if test "$_updates" = no; then
			_sparkle=no
		else
			if test ! -z $_sparklepath ; then
				SPARKLE_CFLAGS="-I$_sparklepath/include"
				SPARKLE_LIBS="-L$_sparklepath/Release -L$_sparklepath/x64/Release"
			fi
			if test "$_sparkle" = auto ; then
				_sparkle=no
				cat > $TMPC << EOF
#include <winsparkle.h>
int main(void) { win_sparkle_get_update_check_interval(); return 0; }
EOF
				cc_check $SPARKLE_CFLAGS $SPARKLE_LIBS -lWinSparkle && _sparkle=yes
			fi
			if test "$_sparkle" = yes ; then
				append_var LIBS "$SPARKLE_LIBS -lWinSparkle"
				append_var INCLUDES "$SPARKLE_CFLAGS"
			fi
			define_in_config_if_yes "$_sparkle" 'USE_SPARKLE'
		fi
		echo "$_sparkle"
	;;
	*)
		_sparkle=no
	;;
esac

#
# Check for libcurl to be present
#
if test "$_libcurl" != "no"; then

	# Look for the curl-config script
	find_libcurlconfig

	if test -z "$_libcurlconfig"; then
		_libcurl=no
	else
		if test -n "$_staticlibpath"; then
			LIBCURL_LIBS=`$_libcurlconfig --static-libs`
		else
			LIBCURL_LIBS=`$_libcurlconfig --libs`
		fi
		LIBCURL_CFLAGS=`$_libcurlconfig --cflags`

		case $_host_os in
			amigaos* | morphos*)
				append_var LIBCURL_LIBS "-lpthread"
			;;
			# macOS does not allow static libs, overriding
			darwin*)
				LIBCURL_LIBS=`$_libcurlconfig --libs`
			;;
			psp2*)
				append_var LIBCURL_LIBS "-lssl -lcrypto"
			;;
		esac

		if test "$_libcurl" = "auto"; then
			_libcurl=no

			cat > $TMPC << EOF
			#include <curl/curl.h>
			int main(int argc, char *argv[]) {
				int x;
				curl_easy_setopt(NULL,CURLOPT_URL,NULL);
				x=CURL_ERROR_SIZE;
				x=CURLOPT_WRITEFUNCTION;
				x=CURLOPT_WRITEDATA;
				x=CURLOPT_ERRORBUFFER;
				x=CURLOPT_STDERR;
				x=CURLOPT_VERBOSE;

				curl_version_info_data *data = curl_version_info(CURLVERSION_NOW);
				if (data->features & CURL_VERSION_SSL)
					return 0;
				return 1;
			}
EOF

			cc_check_no_clean $LIBCURL_CFLAGS $LIBCURL_LIBS
			if test "$?" -eq 0; then
				if test -n "$_host"; then
					# In cross-compiling mode, we cannot run the result, assume SSL is available
					_libcurl=yes
				else
					$TMPO$HOSTEXEEXT
					if test "$?" -eq 0; then
						_libcurl=yes
					else
						_libcurl="no SSL support"
					fi
				fi
			fi
			cc_check_clean
		fi

		if test "$_libcurl" = "yes"; then
			append_var LIBS "$LIBCURL_LIBS"
			append_var INCLUDES "$LIBCURL_CFLAGS"
		fi
	fi

fi

echocheck "libcurl"
echo "$_libcurl"

define_in_config_if_yes "$_libcurl" "USE_LIBCURL"

#
# Check whether to build cloud integration support
#
echo_n "Cloud integration... "
if test "$_cloud" = "no"; then
	echo "no"
else
	_cloud=no
	if test "$_sdlnet" = "yes"; then
		_cloud=yes
		echo_n "local"
	fi
	if test "$_libcurl" = "yes"; then
		if test "$_cloud" = "yes"; then echo_n ", "; fi
		_cloud=yes
		echo_n "servers"
	fi
	if test "$_cloud" = "no"; then
		echo_n "no"
	fi
	echo  # newline
fi
define_in_config_if_yes $_cloud 'USE_CLOUD'

#
# Check is NSDockTilePlugIn protocol is supported
#
case $_host_os in
	darwin*)
		# NSDockTilePlugIn was added in OS X 10.6, so will not be available when compiling on older macOS versions.
		echocheck "DockTilePlugin"
		if test "$_osxdockplugin" = auto ; then
			_osxdockplugin=no
			cat > $TMPC << EOF
#include <Cocoa/Cocoa.h>
@interface ScummVMDockTilePlugIn : NSObject <NSDockTilePlugIn> {
}
@end
EOF
			cc_check -c -ObjC++ && _osxdockplugin=yes
		fi
		define_in_config_if_yes "$_osxdockplugin" 'USE_DOCKTILEPLUGIN'
		echo "$_osxdockplugin"
	;;
	*)
		_osxdockplugin=no
	;;
esac

#
# Check for FluidSynth
#
echocheck "FluidSynth"

append_var FLUIDSYNTH_LIBS "-lfluidsynth"
case $_host_os in
	mingw*)
		FLUIDSYNTH_STATIC_LIBS="$FLUIDSYNTH_LIBS -lglib-2.0 -lintl -liconv -lws2_32 -lole32 -lshlwapi -lpcre -ldsound -lwinmm"
	;;

	darwin*)
		FLUIDSYNTH_STATIC_LIBS="$FLUIDSYNTH_LIBS -framework Foundation -framework CoreServices -framework CoreMIDI -framework CoreAudio -framework AudioToolbox -lglib-2.0 -lintl -liconv -lreadline"
	;;

	iphone)
		FLUIDSYNTH_STATIC_LIBS="$FLUIDSYNTH_LIBS -framework Foundation -framework CoreMIDI -lglib-2.0 -lintl -liconv"
	;;

	switch)
		FLUIDSYNTH_STATIC_LIBS="$FLUIDSYNTH_LIBS -lnx"
	;;

	psp2)
		FLUIDSYNTH_STATIC_LIBS="$FLUIDSYNTH_LIBS -lpthread"
	;;

	*)
		FLUIDSYNTH_STATIC_LIBS="$FLUIDSYNTH_LIBS -lglib-2.0 -lintl -liconv"
	;;
esac

if test "$_fluidsynth" = auto; then
	_fluidsynth=no
	cat > $TMPC << EOF
#include <fluidsynth.h>
int main(void) { delete_fluid_settings(new_fluid_settings()); return 0; }
EOF
	cc_check_no_clean $FLUIDSYNTH_CFLAGS $FLUIDSYNTH_LIBS && _fluidsynth=yes
	if test "$_fluidsynth" != yes && test "$_pkg_config" = "yes" && $_pkgconfig --exists fluidsynth; then
		FLUIDSYNTH_LIBS="`$_pkgconfig --static --libs fluidsynth`"
		cc_check_no_clean $FLUIDSYNTH_CFLAGS $FLUIDSYNTH_LIBS && _fluidsynth=yes
	fi
	if test "$_fluidsynth" != yes; then
		FLUIDSYNTH_LIBS="$FLUIDSYNTH_STATIC_LIBS"
		cc_check_no_clean $FLUIDSYNTH_CFLAGS $FLUIDSYNTH_LIBS && _fluidsynth=yes
	fi
	cc_check_clean
fi
if test "$_fluidsynth" = yes; then
	append_var LIBS "$FLUIDSYNTH_LIBS"
	append_var INCLUDES "$FLUIDSYNTH_CFLAGS"
fi
define_in_config_if_yes "$_fluidsynth" 'USE_FLUIDSYNTH'
echo "$_fluidsynth"

#
# Check for FluidLite
#
echocheck "FluidLite"

append_var FLUIDLITE_LIBS "-lfluidlite"
if test "$_fluidlite" = auto; then
	_fluidlite=no
	cat > $TMPC << EOF
#include <fluidlite.h>
int main(void) { delete_fluid_settings(new_fluid_settings()); return 0; }
EOF
	cc_check_no_clean $FLUIDLITE_CFLAGS $FLUIDLITE_LIBS && _fluidlite=yes
	if test "$_fluidlite" != yes && test "$_pkg_config" = "yes" && $_pkgconfig --exists fluidlite; then
		FLUIDLITE_LIBS="`$_pkgconfig --static --libs fluidlite`"
		cc_check_no_clean $FLUIDLITE_CFLAGS $FLUIDLITE_LIBS && _fluidlite=yes
	fi
	cc_check_clean
fi
if test "$_fluidlite" = yes && test "$_fluidsynth" = no; then
	define_in_config_if_yes "$_fluidlite" 'USE_FLUIDLITE'
	define_in_config_if_yes "$_fluidlite" 'USE_FLUIDSYNTH'
	append_var LIBS "$FLUIDLITE_LIBS"
	append_var INCLUDES "$FLUIDLITE_CFLAGS"
else
	if test "$_fluidsynth" = yes; then
		_fluidlite="no (FluidSynth/FluidLite support is mutually exclusive)"
	fi
	add_line_to_config_h '#undef USE_FLUIDLITE'
fi
echo "$_fluidlite"

#
# Check for readline if text_console is enabled
#
echocheck "readline"
if test "$_text_console" = yes ; then
	_READLINE_LIBS="-lreadline"
	if test "$_readline" = auto ; then
		_readline=no
		cat > $TMPC << EOF
#include <stdio.h>
#include <readline/readline.h>
#include <readline/history.h>

int main(void) {
	rl_hook_func_t f; // not present in apple's libedit
	char *x = readline("");
}
EOF
		cc_check_no_clean $READLINE_CFLAGS $READLINE_LIBS $_READLINE_LIBS && _readline=yes
		if test "$_readline" = no ; then
			_READLINE_LIBS="-lreadline -ltermcap"
			cc_check_no_clean $READLINE_CFLAGS $READLINE_LIBS $_READLINE_LIBS && _readline=yes
		fi
	fi
	cc_check_clean
	echo "$_readline"
else
	_readline=no
	echo "skipping (text console disabled)"
fi

if test "$_readline" = yes ; then
	#
	# Check the type of rl_completion_entry_function.
	# It can be int(*)(const char *, int) or char *(*)(const char *, int).
	#
	cat > $TMPC << EOF
#include <stdio.h>
#include <readline/readline.h>
#include <readline/history.h>

int readline_completionFunction(const char *, int);

int main(void) {
	char *x = readline("");
	rl_completion_entry_function = &readline_completionFunction;
}
EOF
	cc_check $READLINE_CFLAGS $READLINE_LIBS $_READLINE_LIBS -c && add_line_to_config_h '#define USE_READLINE_INT_COMPLETION'

fi

if test "$_readline" = yes ; then
	append_var LIBS "$READLINE_LIBS $_READLINE_LIBS"
	append_var INCLUDES "$READLINE_CFLAGS"
fi

define_in_config_h_if_yes "$_readline" 'USE_READLINE'

define_in_config_h_if_yes "$_text_console" 'USE_TEXT_CONSOLE_FOR_DEBUGGER'

#
# Check for Unity if taskbar integration is enabled
#
echocheck "libunity"
if test "$_unix" = no || test "$_taskbar" = no || test "$_pkg_config" = no; then
	_libunity=no
else
if test "$_libunity" = auto ; then
	case $_host_os in
		mingw*)
			# unity is not supported on mingw
			_libunity=no
			;;
		*)
			# Unity has a lot of dependencies, update the libs and cflags var with them
			LIBUNITY_LIBS="$LIBUNITY_LIBS `$_pkgconfig --libs 'unity > 3.8.1' 2>> "$TMPLOG"`"
			LIBUNITY_CFLAGS="$LIBUNITY_CFLAGS `$_pkgconfig --cflags 'unity > 3.8.1' 2>> "$TMPLOG"`"
			_libunity=no
			cat > $TMPC << EOF
#include <unity.h>
int main(void) {
	unity_launcher_entry_get_for_desktop_id("scummvm.desktop");
	return 0;
}
EOF
			cc_check $LIBUNITY_CFLAGS $LIBUNITY_LIBS && _libunity=yes
			;;
	esac
fi
if test "$_libunity" = yes ; then
	if test "$LIBUNITY_CFLAGS" = "" || test "$LIBUNITY_LIBS" = ""; then
		LIBUNITY_LIBS="$LIBUNITY_LIBS `$_pkgconfig --libs 'unity > 3.8.1' 2>> "$TMPLOG"`"
		LIBUNITY_CFLAGS="$LIBUNITY_CFLAGS `$_pkgconfig --cflags 'unity > 3.8.1' 2>> "$TMPLOG"`"
	fi
	append_var LIBS "$LIBUNITY_LIBS"
	append_var CXXFLAGS "$LIBUNITY_CFLAGS"
fi
define_in_config_h_if_yes "$_libunity" 'USE_UNITY'
fi
echo "$_libunity"

#
# Check for GTK if system dialogs are enabled
#
echocheck "gtk"
if test "$_unix" = no || test "$_dialogs" = no || test "$_pkg_config" = no; then
	_gtk=no
else
if test "$_gtk" = auto ; then
	case $_host_os in
		mingw*)
			# gtk is not required on mingw
			_gtk=no
			;;
		*)
			# GTK has a lot of dependencies, update the libs and cflags var with them
			GTK_LIBS="$GTK_LIBS `$_pkgconfig --libs gtk+-3.0 2>> "$TMPLOG"`"
			GTK_CFLAGS="$GTK_CFLAGS `$_pkgconfig --cflags gtk+-3.0 2>> "$TMPLOG"`"
			_gtk=no
			cat > $TMPC << EOF
#include <gtk/gtk.h>
int main(void) {
	gtk_init_check(NULL, NULL);
	return 0;
}
EOF
			cc_check $GTK_CFLAGS $GTK_LIBS && _gtk=yes
			;;
	esac
fi
if test "$_gtk" = yes ; then
	if test "$GTK_CFLAGS" = "" || test "$GTK_LIBS" = ""; then
		GTK_LIBS="$GTK_LIBS `$_pkgconfig --libs gtk+-3.0 2>> "$TMPLOG"`"
		GTK_CFLAGS="$GTK_CFLAGS `$_pkgconfig --cflags gtk+-3.0 2>> "$TMPLOG"`"
	fi
	append_var LIBS "$GTK_LIBS"
	append_var CXXFLAGS "$GTK_CFLAGS"
fi
define_in_config_h_if_yes "$_gtk" 'USE_GTK'
fi
echo "$_gtk"

#
# Check for FreeType2 to be present
#
find_freetype() {
	# Wrapper function which tries to find freetype
	# either by calling freetype-config or by using
	# pkg-config.
	# As of freetype-2.9.1 the freetype-config file
	# no longer gets installed by default.
	if test "$_pkg_config" = "yes" && $_pkgconfig --exists freetype2; then
		FREETYPE2_LIBS=`$_pkgconfig --libs freetype2`
		FREETYPE2_CFLAGS=`$_pkgconfig --cflags freetype2`
		FREETYPE2_STATIC_LIBS=`$_pkgconfig --static --libs freetype2`
		_freetype_found="true"
	else
		# Look for the freetype-config script
		find_freetypeconfig
		if test -n "$_freetypeconfig"; then
			# Since 2.3.12, freetype-config prepends $SYSROOT to everything.
			# This means we can't pass it a --prefix that includes $SYSROOT.
			freetypeprefix="$_freetypepath"
			if test -n "$SYSROOT" -a "$SYSROOT" != "/"; then
				teststring=VeryImplausibleSysrootX1Y2Z3
				if ( env SYSROOT=/$teststring "$_freetypeconfig" --cflags | grep $teststring 2> /dev/null > /dev/null ); then
					echo "Adapting FreeType prefix to SYSROOT" >> "$TMPLOG"
					freetypeprefix="${freetypeprefix##$SYSROOT}"
				fi
			fi
			FREETYPE2_LIBS=`$_freetypeconfig --prefix="$freetypeprefix" --libs`
			FREETYPE2_CFLAGS=`$_freetypeconfig --prefix="$freetypeprefix" --cflags`
			FREETYPE2_STATIC_LIBS=`$_freetypeconfig --prefix="$freetypeprefix" --static --libs 2>/dev/null`
			_freetype_found="true"
		fi
	fi
}

if test "$_freetype2" != "no"; then
	find_freetype
	if test $_freetype_found != true; then
		_freetype2=no
	else
		if test "$_freetype2" = "auto"; then
			_freetype2=no

			cat > $TMPC << EOF
#include <ft2build.h>
#include FT_FREETYPE_H

int main(int argc, char *argv[]) {
	FT_Library library;
	FT_Error error = FT_Init_FreeType(&library);
	FT_Done_FreeType(library);
}
EOF

			cc_check_no_clean $FREETYPE2_CFLAGS $FREETYPE2_LIBS && _freetype2=yes
			# Modern freetype-config scripts accept --static to get all
			# required flags for static linking. We abuse this to detect
			# FreeType2 builds which are static themselves.
			if test "$_freetype2" != "yes"; then
				FREETYPE2_LIBS="$FREETYPE2_STATIC_LIBS"
				cc_check_no_clean $FREETYPE2_CFLAGS $FREETYPE2_LIBS && _freetype2=yes
			fi
			cc_check_clean
		fi

		if test "$_freetype2" = "yes"; then
			append_var LIBS "$FREETYPE2_LIBS"
			append_var CXXFLAGS "$FREETYPE2_CFLAGS"
		fi
	fi

fi

echocheck "FreeType2"
echo "$_freetype2"

define_in_config_if_yes "$_freetype2" "USE_FREETYPE2"


#
# Check for OpenGL (ES)
#
echocheck "OpenGL"

_opengl_glad=no

if test "$_opengl_mode" != none ; then
	case $_backend in
		android)
			# We require API level 16 while GLES2 APIs have been added in level 8 so we are safe for compilation
			_opengl_mode=gles2
			_opengl_glad=yes
			;;
		openpandora)
			# Enable GLES only if user explicitely requested it
			# Backend is SDL based so GLAD is supported
			test "$_opengl_mode" != "gles" && _opengl_mode=none
			test "$_opengl_mode" != "none" && _opengl_glad=yes
			;;
		sdl)
			# This case is for pure SDL backend. Many platforms overload it and create a new backend
			# They still make use of SDL but it's handled below in the default case
			case $_sdlversion in
				1.2.*)
					# Stock SDL 1.2 only supports OpenGL contexts.
					_opengl_mode=gl
					;;

				*)
					# SDL2 supports both OpenGL + OpenGL ES contexts.
					# However, macOS only allows OpenGL context creation at
					# this time, thus we limit us to OpenGL on that platform.
					case $_host_os in
						darwin*)
							_opengl_mode=gl
							;;
						emscripten)
							_opengl_mode=gles2
							_opengl_glad=no
							append_var LDFLAGS "-s FULL_ES2=1 -s MAX_WEBGL_VERSION=1"
							;;
						*)
							# As SDL2 supports everything, let the user choose if he wants to
							test "$_opengl_mode" = "auto" && _opengl_mode=any
							;;
					esac
					;;
			esac
			_opengl_glad=yes
			;;
		switch)
			_opengl_mode=gles2
			_opengl_glad=yes
			;;
		*)
			# On all other platforms, by default don't enable OpenGL
			test "$_opengl_mode" = "auto" && _opengl_mode=none
			# We only support OpenGL on SDL based backends and Android (already handled)
			test "$_sdl" = "no" && _opengl_mode=none
			# If it's a SDL based backend and OpenGL is really enabled, use GLAD
			test "$_opengl_mode" != "none" && test "$_sdl" != "no" && _opengl_glad=yes
			;;
	esac
fi

if test "$_opengl_glad" = "no" -a "$_opengl_mode" != "none"; then
	# Try different header filenames
	# 1) GL/gl.h         This is usually used on POSIX and Windows systems
	# 2) OpenGL/gl.h     This is used on macOS
	# 3) GLES2/gl2.h     This is used for OpenGL ES 2.x
	# 3) GLES/gl.h       This is used for OpenGL ES 1.x
	_opengl_can_compile=no
	for i in "GL/gl.h" "OpenGL/gl.h" "GLES2/gl2.h" "GLES/gl.h"; do
		# Test the current header for OpenGL
		if test "$_opengl_mode" = "gl" -o "$_opengl_mode" = "any" ; then
			cat > $TMPC << EOF
#include <$i>
#include <stdio.h>
int main(void) { printf("ANTIVIRUS FALSE POSITIVE WORKAROUND"); return GL_VERSION_1_1; }
EOF
			cc_check $DEFINES $OPENGL_CFLAGS $OPENGL_LIBS && _opengl_can_compile=yes && break
			# Desktop often has multiple implementations GL/GLES/GLES2
		fi

		# Test the current header for OpenGL ES2
		if test "$_opengl_mode" = "gles2" -o "$_opengl_mode" = "any" ; then
			cat > $TMPC << EOF
#include <$i>
int main(void) { return GL_ES_VERSION_2_0; }
EOF
			cc_check $DEFINES $OPENGL_CFLAGS $OPENGL_LIBS && _opengl_can_compile=yes && _opengl_mode=gles2 && break
		fi

		# Test the current header for OpenGL ES
		if test "$_opengl_mode" = "gles" -o "$_opengl_mode" = "any" ; then
			cat > $TMPC << EOF
#include <$i>
int main(void) { return GL_VERSION_ES_CM_1_0; }
EOF
			cc_check $DEFINES $OPENGL_CFLAGS $OPENGL_LIBS && _opengl_can_compile=yes && _opengl_mode=gles && break
		fi
	done

	if test "$_opengl_can_compile" = yes; then
		# Our simple test case
		cat > $TMPC << EOF
int main(void) { return 0; }
EOF
		_opengl_can_compile=no
		# Try different library names
		if test "$_opengl_mode" = "gles2" ; then
			# GLESv2    This is generally used by nearly all platforms for OpenGL ES 2
			for lib in "-lGLESv2"; do
				if cc_check_no_clean $DEFINES $OPENGL_CFLAGS $OPENGL_LIBS $lib; then
					append_var OPENGL_LIBS "$lib"
					_opengl_can_compile=yes
					break
				fi
			done
		elif test "$_opengl_mode" = "gles" ; then
			OPENGL_LIBS="-lGLESv1_CM"
			if cc_check_no_clean $DEFINES $OPENGL_CFLAGS $OPENGL_LIBS; then
				_opengl_can_compile=yes
			fi
		else
			case $_host_os in
			darwin*)
				OPENGL_LIBS="-framework OpenGL"
				;;
			mingw*)
				OPENGL_LIBS="-lopengl32"
				;;
			*)
				OPENGL_LIBS="-lGL"
				;;
			esac
			if cc_check_no_clean $DEFINES $OPENGL_CFLAGS $OPENGL_LIBS; then
				_opengl_can_compile=yes
			fi
		fi
	fi

	if test "$_opengl_can_compile" = yes ; then
		append_var INCLUDES "$OPENGL_CFLAGS"
		append_var LIBS "$OPENGL_LIBS"
		append_var LIBS_3D "$OPENGL_LIBS"
	fi
	cc_check_clean
elif test "$_opengl_glad" = "yes"; then
	_opengl_can_compile=yes
fi

_opengl=yes
case $_opengl_mode in
	none)
		echo "no"
		_opengl=no
		;;

	any)
		echo "yes (runtime detection)"
		add_line_to_config_h "#undef USE_GLES_MODE"
		;;

	gl)
		echo "yes (OpenGL)"
		add_line_to_config_h "#define USE_GLES_MODE 0"
		;;

	gles)
		echo "yes (OpenGL ES)"
		add_line_to_config_h "#define USE_GLES_MODE 1"
		;;

	gles2)
		echo "yes (OpenGL ES 2)"
		add_line_to_config_h "#define USE_GLES_MODE 2"
		;;

	*)
		echo "invalid mode specification '$_opengl_mode'. Aborting."
		exit 1
		;;
esac


#
# Check for OpenGL (ES) for game
#
echocheck "OpenGL for game"

if test "$_opengl_can_compile" = "yes"; then
	if test "$_opengl_mode" = "gles"; then
		# GLES 1.x is not supported for 3D games
		_opengl_game_classic=no
		_opengl_game_shaders=no
	elif test "$_opengl_mode" = "gles2"; then
		# GLES2 doesn't support GL classic
		_opengl_game_classic=no
		if test "$_opengl_game_shaders" != "no"; then
			_opengl_game_shaders=yes
		fi
	else
		# We can compile GL desktop
		if test "$_opengl_game_classic" != "no"; then
			_opengl_game_classic=yes
		fi
		if test "$_opengl_game_shaders" != "no"; then
			_opengl_game_shaders=yes
		fi
	fi
else
	_opengl_game_classic=no
	_opengl_game_shaders=no
fi

if test "$_opengl_game_shaders" = "yes" ; then
	if test "$_opengl_mode" = "gles2" ; then
		echo "yes (OpenGL ES2)"
	else
		echo "yes (shaders enabled)"
	fi
elif test "$_opengl_game_classic" = "yes" ; then
	echo "yes (shaders disabled)"
else
	echo "no"
fi

define_in_config_if_yes "$_opengl" "USE_OPENGL"
define_in_config_if_yes "$_opengl_glad" "USE_GLAD"
define_in_config_if_yes "$_opengl_game_classic" "USE_OPENGL_GAME"
define_in_config_if_yes "$_opengl_game_shaders" "USE_OPENGL_SHADERS"

if test "$_dynamic_modules" = yes ; then
	case $_host_os in
		amigaos*)
			# miniGL on AmigaOS is a static library so don't link with it in plugins
			# instead link against it and include all symbols
			append_var LIBS "-Wl,-whole-archive $LIBS_3D -Wl,-no-whole-archive"
			LIBS_3D=
			;;
		*)
			;;
	esac
fi

# If we have OpenGL libraries, then add them to plugins
# so they could link
if test -n "$LIBS_3D" ; then
	_mak_plugins=$_mak_plugins"PLUGIN_LDFLAGS  += $LIBS_3D"
fi


#
# Check for Linux CD-ROM support
#
case $_host_os in
	*linux*)
		echocheck "Linux CD-ROM"
		linuxcd=no
		cat > $TMPC << EOF
#include <linux/cdrom.h>
#include <sys/sysmacros.h>
#include <sys/types.h>
int main(void) {
	int x = CDROMREADAUDIO;
	dev_t dev;
	return major(dev) + x;
}
EOF
		cc_check && linuxcd=yes
		define_in_config_if_yes "$linuxcd" 'USE_LINUXCD'
		echo "$linuxcd"
		;;
esac


#
# Check for nasm
#
if test "$_have_x86" = yes ; then
	echocheck "nasm"
	if test "$_nasm" = no ; then
		echo "disabled"
	else
		IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=$SEPARATOR

		for path_dir in $_nasmpath; do
			if test -x "$path_dir/nasm$NATIVEEXEEXT" ; then
				NASM="$path_dir/nasm$NATIVEEXEEXT"
				NASMFLAGS="-O1 -g"
				echo $NASM
				break
			fi
		done

		# fallback to the nasm compatible yasm
		if test x$NASM = x -o x$NASM = x'"$NASM"'; then
			for path_dir in $_nasmpath; do
				if test -x "$path_dir/yasm$NATIVEEXEEXT" ; then
					NASM="$path_dir/yasm$NATIVEEXEEXT"
					NASMFLAGS="-a x86 -m x86"
					echo $NASM
					break
				fi
			done
		fi

		IFS="$ac_save_ifs"

		if test x$NASM = x -o x$NASM = x'"$NASM"'; then
			echo "not found"
			_nasm=no
		else
			case $_host_os in
				darwin*)
					append_var NASMFLAGS "-f macho"
				;;
				mingw* | kolibrios)
					append_var NASMFLAGS "-f win32"
				;;
				os2-emx*)
					append_var NASMFLAGS "-f aout"
				;;
				*)
					append_var NASMFLAGS "-f elf"
					if $LD $LDFLAGS -Wl,--version 2>/dev/null | grep -q -e 'GNU gold'; then
						# gold throws an internal error when nasm uses dwarf, force older stabs in this case
						append_var NASMFLAGS "-F stabs"
					fi
				;;
			esac
			_nasm=yes
		fi
	fi
fi

define_in_config_if_yes $_nasm 'USE_NASM'

#
# Check for pandoc
#
if test "$_pandoc" = yes ; then
	echocheck "pandoc"

	command -v pandoc >/dev/null 2>&1 && _pandoc=yes || _pandoc=no

	echo $_pandoc
fi

define_in_config_if_yes $_pandoc 'USE_PANDOC'

#
# Check for curl
#
if test "$_curl" = yes ; then
	echocheck "curl"

	command -v curl >/dev/null 2>&1 && _curl=yes || _curl=no

	echo $_curl
fi

define_in_config_if_yes $_curl 'USE_CURL'

#
# Check for FriBidi
#
echocheck "FriBidi"
if test "$_pkg_config" = "yes" && $_pkgconfig --exists fribidi; then
	append_var FRIBIDI_LIBS "`$_pkgconfig --libs fribidi`"
	append_var FRIBIDI_CFLAGS "`$_pkgconfig --cflags fribidi`"
else
	append_var FRIBIDI_LIBS "-lfribidi"
fi
if test "$_fribidi" = auto ; then
	_fribidi=no
	cat > $TMPC << EOF
#include <fribidi/fribidi.h>
int main(void) { return 0; }
EOF
	cc_check $FRIBIDI_CFLAGS $FRIBIDI_LIBS && _fribidi=yes
fi
if test "$_fribidi" = yes ; then
	append_var LIBS "$FRIBIDI_LIBS"
	append_var INCLUDES "$FRIBIDI_CFLAGS"
fi
define_in_config_if_yes "$_fribidi" 'USE_FRIBIDI'
echo "$_fribidi"

#
# Test C++11 Compatibility
#
define_in_config_if_yes "$_test_cxx11" 'ENABLE_TEST_CPP_11'
echo_n "Test C++11 compatibility during compilation... "
echo "$_test_cxx11"

# Default to plain text output for pandoc
if test -z "$_pandocformat" -o "$_pandocformat" = "default"; then
	_pandocformat="plain"
fi

if test "$_pandocext" = "default"; then
	if test "$_pandocformat" = plain; then
		_pandocext=""
	else
		_pandocext=".$_pandocformat"
	fi
fi

#
# Check for Discord
#
echocheck "Discord RPC"
if test "$_discord" = auto ; then
	_discord=no
	cat > $TMPC << EOF
#include <discord_rpc.h>
int main(void) { Discord_Shutdown(); return 0; }
EOF
	cc_check $DISCORD_CFLAGS $DISCORD_LIBS -ldiscord-rpc && _discord=yes
fi
if test "$_discord" = yes ; then
	append_var LIBS "$DISCORD_LIBS -ldiscord-rpc"
	append_var INCLUDES "$DISCORD_CFLAGS"
fi
define_in_config_if_yes "$_discord" 'USE_DISCORD'
echo "$_discord"

#
# Enable vkeybd / event recorder
#
define_in_config_if_yes $_vkeybd 'ENABLE_VKEYBD'
define_in_config_if_yes $_eventrec 'ENABLE_EVENTRECORDER'

# Check whether to build translation support
#
echo_n "Building translation support... "
define_in_config_if_yes $_translation 'USE_TRANSLATION'
if test "$_translation" = no ; then
	echo "no"
else
	echo_n "yes ("

	if test "$_detectlang" != yes ; then
		cat > $TMPC << EOF
#include <locale.h>
int main(void) { setlocale(LC_ALL, ""); return 0; }
EOF
		_detectlang=no
		cc_check && _detectlang=yes
	fi

	define_in_config_h_if_yes $_detectlang 'USE_DETECTLANG'
	if test "$_detectlang" = yes ; then
		echo "with runtime language detection)"
	else
		echo "without runtime language detection)"
	fi
fi

#
# Check whether to build taskbar integration support
#
echo_n "Building taskbar integration support... "
if test "$_taskbar" = "no"; then
	echo "no"
else
	case $_host_os in
	mingw*)
		append_var LIBS "-lole32 -luuid"
		echo "win32"
		_taskbar=yes
		;;
	darwin*)
		echo "osx"
		_taskbar=yes
		;;
	*)
		if test "$_libunity" = yes; then
			echo "unity"
			_taskbar=yes
		else
			echo "no"
			_taskbar=no
		fi
		;;
	esac
fi
define_in_config_if_yes $_taskbar 'USE_TASKBAR'

#
# Check whether to build system dialogs support
#
echo_n "Building system dialogs support... "
if test "$_dialogs" = "no"; then
	echo "no"
else
	case $_host_os in
	amigaos* | morphos*)
		echo "asl"
		_dialogs=yes
		;;
	darwin*)
		echo "osx"
		_dialogs=yes
		;;
	mingw*)
		append_var LIBS "-lole32 -luuid"
		echo "win32"
		_dialogs=yes
		;;
	*)
		if test "$_gtk" = yes; then
			echo "gtk"
			_dialogs=yes
		else
			echo "no"
			_dialogs=no
		fi
		;;
	esac
fi
define_in_config_if_yes $_dialogs 'USE_SYSDIALOGS'

#
# Check whether to build TTS integration support
#
echo_n "Building text-to-speech support... "
if test "$_tts" = "no"; then
	echo "no"
else
	case $_host_os in
	linux* | freebsd* | openbsd*)
		echo "speech dispatcher"
		_tts=yes
		define_in_config_if_yes $_tts 'USE_SPEECH_DISPATCHER'
		append_var LIBS '-lspeechd -lpthread'
		;;
	mingw*)
		echo "win32"
		_tts=yes
		append_var LIBS '-lsapi -lole32'
		;;
	darwin*)
		echo "osx"
		_tts=yes
		;;
	*)
		echo "no"
		_tts=no
		;;
	esac
fi
define_in_config_if_yes $_tts 'USE_TTS'

#
# Check whether to build with TinyGL support
#
echo_n "Building TinyGL support... "
if test "$_16bit" = "no"; then
	_tinygl=no
fi
define_in_config_if_yes $_tinygl 'USE_TINYGL'
echo "$_tinygl"

#
# Check whether to build Bink video support
#
echo_n "Building Bink video support... "
define_in_config_if_yes $_bink 'USE_BINK'
echo "$_bink"

#
# Check whether to build updates support
#
echo_n "Building updates support... "
if test "$_updates" = yes; then
	if test "$_sparkle" = yes; then
		echo "Sparkle"
	else
		_updates=no;
		echo "$_updates"
	fi
else
	echo "$_updates"
fi
define_in_config_if_yes $_updates 'USE_UPDATES'

#
# Check whether to create a build with all resources files linked into the binary
#
define_in_config_if_yes "$_builtin_resources" 'BUILTIN_RESOURCES'

#
# Figure out installation directories
#
test "x$prefix" = xNONE && prefix=/usr/local
test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'

case $_host_os in
	ds | mingw*)
		# Windows stores all the external data files in executable file.
		;;
	*)
		append_var DEFINES "-DDATA_PATH=\\\"$datadir\\\""
		;;
esac

case $_host in
	3ds)
		append_var DEFINES "-DPLUGIN_DIRECTORY=\\\"$datadir/plugins\\\""
		;;
	ds)
		;;
	openpandora)
		# Add ../plugins as a path so plugins can be found when running from a .PND.
		append_var DEFINES "-DPLUGIN_DIRECTORY=\\\"../plugins\\\""
		;;
	maemo)
		# The Maemo apps want the plugins in the "lib" directory
		# without a scummvm sub directory.
		append_var DEFINES "-DPLUGIN_DIRECTORY=\\\"$libdir\\\""
		;;
	arm-*riscos)
		append_var DEFINES "-DPLUGIN_DIRECTORY=\\\"\${datarootdir}/plugins\\\""
		;;
	*)
		append_var DEFINES "-DPLUGIN_DIRECTORY=\\\"$libdir/scummvm\\\""
		;;
esac

#
# Set variables for profiling.
# We need to do it here to prevent mess-ups with the tests e.g. on the PSP
#
if test "$_enable_prof" = yes ; then
	append_var CXXFLAGS "-pg"
	append_var LDFLAGS "-pg"
	append_var DEFINES "-DENABLE_PROFILING"
fi

echo_n "Enabling Address Sanitizer... "

if test "$_enable_asan" = yes ; then
	if test "$_enable_tsan" = yes ; then
		echo_n "conflicting with tsan, disabling... "
		_enable_asan=no
	else
		append_var CXXFLAGS "-fsanitize=address -fno-omit-frame-pointer"
		append_var LDFLAGS "-fsanitize=address -fno-omit-frame-pointer"
		append_var PLUGIN_LDFLAGS "-fsanitize=address -fno-omit-frame-pointer"
	fi
fi
echo "$_enable_asan"

echo_n "Enabling Thread Sanitizer... "

if test "$_enable_tsan" = yes ; then
	append_var CXXFLAGS "-fsanitize=thread"
	append_var LDFLAGS "-fsanitize=thread"
	append_var PLUGIN_LDFLAGS "-fsanitize=thread"
fi
echo "$_enable_tsan"

echo_n "Enabling Undefined Behavior Sanitizer... "

if test "$_enable_ubsan" = yes ; then
	append_var CXXFLAGS "-fsanitize=undefined"
	append_var LDFLAGS "-fsanitize=undefined"
	append_var PLUGIN_LDFLAGS "-fsanitize=undefined"
fi
echo "$_enable_ubsan"

echo_n "Backend... "
echo_n "$_backend"

if test "$_sdl" = yes -a -n "$_sdlversion"; then
	if test "$_backend" = sdl; then
		echo_n " ($_sdlversion)"
	else
		echo_n " (SDL $_sdlversion)"
	fi
fi

if test "$_nasm" = yes ; then
	echo_n ", assembly routines"
fi

if test "$_16bit" = yes ; then
	echo_n ", 16bit color"
fi

if test "$_highres" = yes ; then
	echo_n ", high resolution"
fi

if test "$_tinygl" = yes ; then
	echo_n ", TinyGL"
fi

if test "$_savegame_timestamp" = yes ; then
	echo_n ", savegame timestamp"
fi

if test "$_build_scalers" = yes ; then
	if test "$_build_hq_scalers" = yes ; then
		if test "$_build_edge_scalers" = yes ; then
			echo_n ", HQ and Edge scalers"
		else
			echo_n ", HQ scalers"
		fi
	else
		echo_n ", scalers"
	fi
fi

if test "$_build_aspect" = yes; then
	echo_n ", aspect ratio correction"
fi

if test "$_mt32emu" = yes ; then
	echo_n ", MT-32 emulator"
fi

if test "$_lua" = yes ; then
	echo_n ", Lua"
fi

if test "$_nuked_opl" = yes ; then
	echo_n ", Nuked OPL emulator"
fi

if test "$_text_console" = yes ; then
	echo_n ", text console"
	if test "$_windows_console" = no ; then
		case "$_host_os" in
			mingw*)
				_windows_console=yes
				;;
		esac
	fi
fi

if test "$_windows_console" = yes ; then
	case "$_host_os" in
		mingw*)
			echo_n ", Windows console"
			;;
	esac
fi

if test "$_vkeybd" = yes ; then
	echo_n ", virtual keyboard"
fi

if test "$_eventrec" = yes ; then
	echo_n ", event recorder"
fi

if test "$_cloud" = yes ; then
	echo_n ", cloud"
fi
if test "$_enet" = yes ; then
	echo ", ENet"
else
	echo
fi

#
# Some last-minute platform specific stuff, executed
# after all of CXXFLAGS, LDFLAGS, LIBS etc. have been setup
#
case $_host_os in
	3ds)
		if test "$_freetype2" = yes -a "$_png" = yes; then
			append_var LIBS "-lbz2"
			append_var LIBS "-lpng"
		fi
		if test "$_tremor" = yes -o "$_flac" = yes; then
			append_var LIBS "-logg"
		fi

		# Moved -Wl,--gc-sections here to avoid it interfering with the library checks
		if test "$_dynamic_modules" = no ; then
			append_var LDFLAGS "-Wl,--gc-sections"
		else
			append_var LDFLAGS "-Wl,--no-gc-sections"
		fi
		;;
	amigaos*)
		# In release mode use LTO to improve performance
		# and dead code elimination to reduce binary size
		if test "$_release_build" = yes; then
			append_var CXXFLAGS "-flto"
			append_var CXXFLAGS "-ffunction-sections -fdata-sections"
			append_var PLUGIN_LDFLAGS "-flto=jobserver"
		fi
		;;
	android)
		# Force treating unqualified char variables as signed by default.
		# NDK compiler for ARM will treat them as unsigned otherwise, which creates bugs in the code.
		# We apply this to all Android architectures (arm, arm64, and x86, x86-64)
		# albeit only the ARM architectures really required it (the others are not affected by this addition).
		echo "(Android) Treating char as signed char by default"
		append_var CXXFLAGS "-fsigned-char"
		# ssp at this point so the cxxtests link
		if test "$_debug_build" = yes; then
			append_var CXXFLAGS "-fstack-protector"
		else
			append_var CXXFLAGS "-fno-stack-protector"
		fi

		static_libs=''
		system_libs=''
		for lib in $LIBS; do
			case $lib in
			-lz|-lm|-ldl)
				system_libs="$system_libs $lib"
				;;
			*)
				static_libs="$static_libs $lib"
				;;
			esac
		done

		# -lgcc is carefully placed here - we want to catch
		# all toolchain symbols in *our* libraries rather
		# than pick up anything unhygienic from the Android libs.
		LIBS="-Wl,-Bstatic $static_libs -Wl,-Bdynamic -lgcc $system_libs -llog -landroid -ljnigraphics -lEGL"
		;;
	ds)
		# Moved -Wl,--gc-sections here to avoid it interfering with the library checks
		if test "$_dynamic_modules" = no ; then
			append_var LDFLAGS "-Wl,--gc-sections"
		else
			append_var LDFLAGS "-Wl,--no-gc-sections"
			# TODO: automate this required 2 step linking phase
			# append_var LDFLAGS "-Wl,--retain-symbols-file,ds.syms"
		fi
		;;
	emscripten)
		append_var LDFLAGS "--pre-js ./dists/emscripten/custom_shell-pre.js --post-js ./dists/emscripten/custom_shell-post.js --shell-file ./dists/emscripten/custom_shell.html"
		# we remove some linker flags for libs which will be added by emscripten from emscripten-ports to avoid duplicate symbols
		if test "${LDFLAGS#*-s USE_LIBJPEG=1}" != "$LDFLAGS"; then
    		LIBS=`echo ${LIBS} | sed 's/-ljpeg//g'`
		fi
		if test "${LDFLAGS#*-s USE_LIBPNG=1}" != "$LDFLAGS"; then
			LIBS=`echo ${LIBS} | sed 's/-lpng -lz//g'`
		fi
		if test "${LDFLAGS#*-s USE_OGG=1}" != "$LDFLAGS"; then
			LIBS=`echo ${LIBS} | sed 's/-logg//g'`
		fi
		if test "${LDFLAGS#*-s USE_ZLIB=1}" != "$LDFLAGS"; then
			LIBS=`echo ${LIBS} | sed 's/-lz//g'`
		fi
		;;
	kolibrios)
		# In reality we will build a DLL
		append_var LDFLAGS "-shared"
		# kos32 toolchain only has libpng16
		LIBS=`echo ${LIBS} | sed 's/-lpng //g'`
		;;
	mingw*)
		if test "$_windows_unicode" = yes; then
			append_var DEFINES "-DUNICODE -D_UNICODE"
		fi
		# SDL2 sets -mwindows flag by default in sdl2.pc
		# We need to directly replace this in the SDL pkg-config
		if test "$_windows_console" = yes; then
			LIBS=`echo $LIBS | sed -e 's/-mconsole//g' -e 's/-mwindows//g'`
		fi
		;;
	riscos)
		if test "$_dynamic_modules" = no ; then
			append_var LDFLAGS "-Wl,--gc-sections"
			append_var CXXFLAGS "-ffunction-sections"
			append_var CXXFLAGS "-fdata-sections"
		else
			# toolchain asks for gc-sections
			append_var LDFLAGS "-Wl,--no-gc-sections"
			append_var PLUGIN_LDFLAGS "-Wl,--no-gc-sections"
			append_var CXXFLAGS "-mlong-calls"
		fi
		;;
	n64)
		# Move some libs down here, otherwise some symbols required by libvorbis aren't found
		# during linking stage
		append_var LIBS "-lc -lgcc -lnosys"
		;;
	psp2)
		if test "$_dynamic_modules" = no ; then
			#use link time optimization to further reduce exe size
			append_var CXXFLAGS "-flto"
			append_var LDFLAGS "-flto=jobserver"
			#use linker dead code elimination to further reduce exe size
			append_var CXXFLAGS "-ffunction-sections -fdata-sections"
			append_var LDFLAGS "-Wl,--gc-sections"
		fi
		;;
esac


#
# Engine selection
#
_engines_built_static=""
_engines_built_dynamic=""
_engines_skipped=""

awk -f "$_srcdir/engines.awk" < /dev/null

echo "Creating config.h"
cat > config.h.new << EOF
/* This file is automatically generated by configure */
/* DO NOT EDIT MANUALLY */

#ifndef CONFIG_H
#define CONFIG_H

$_config_h_data
$(cat config.h.engines)

/* Data types */
#ifndef SCUMMVM_DONT_DEFINE_TYPES
typedef unsigned $type_1_byte byte;
typedef unsigned int uint;
typedef unsigned $type_1_byte uint8;
typedef unsigned $type_2_byte uint16;
typedef unsigned $type_4_byte uint32;
typedef unsigned $type_8_byte uint64;
typedef signed $type_1_byte int8;
typedef signed $type_2_byte int16;
typedef signed $type_4_byte int32;
typedef signed $type_8_byte int64;
#endif

typedef $signed_type_ptr intptr;
typedef $unsigned_type_ptr uintptr;

#if defined(__APPLE__) && !defined(__ppc__)
#ifndef _UINT64
#define _UINT64
#endif
#endif

#endif /* CONFIG_H */
EOF
rm -f config.h.engines
copy_if_changed config.h.new config.h


echo "Creating config.mk"
cat > config.mk.new << EOF
# -------- Generated by configure -----------

SAVED_CONFIGFLAGS       := $SAVED_CONFIGFLAGS
SAVED_AR                := $SAVED_AR
SAVED_AS                := $SAVED_AS
SAVED_ASFLAGS           := $SAVED_ASFLAGS
SAVED_CPPFLAGS          := $SAVED_CPPFLAGS
SAVED_CXX               := $SAVED_CXX
SAVED_CXXFLAGS          := $SAVED_CXXFLAGS
SAVED_DWP               := $SAVED_DWP
SAVED_LD                := $SAVED_LD
SAVED_LDFLAGS           := $SAVED_LDFLAGS
SAVED_PKG_CONFIG_LIBDIR := $SAVED_PKG_CONFIG_LIBDIR
SAVED_RANLIB            := $SAVED_RANLIB
SAVED_SDL_CONFIG        := $SAVED_SDL_CONFIG
SAVED_STRIP             := $SAVED_STRIP
SAVED_WINDRES           := $SAVED_WINDRES
SAVED_WINDRESFLAGS      := $SAVED_WINDRESFLAGS

CXX := $CXX
CXXFLAGS := $CXXFLAGS
LD := $LD
LIBS += $LIBS
RANLIB := $_ranlib
STRIP := $_strip
AR := $_ar
AS := $_as
ASFLAGS := $ASFLAGS
DWP := $_dwp
WINDRES := $_windres
LDD := $_ldd
WINDRESFLAGS := $WINDRESFLAGS
STAGINGPATH=$_stagingpath
AMIGAOSPATH=$_amigaospath
MORPHOSPATH=$_morphospath
STATICLIBPATH=$_staticlibpath
XCODETOOLSPATH=$_xcodetoolspath
SPARKLEPATH=$_sparklepath
SDLCONFIG=$_sdlconfig

ABI := $ABI

BACKEND := $_backend
MODULES += $MODULES
MODULE_DIRS += $MODULE_DIRS
EXEPRE := $HOSTEXEPRE
EXEEXT := $HOSTEXEEXT
NASM := $NASM
NASMFLAGS := $NASMFLAGS
PANDOC := pandoc
CURL := curl
PANDOCFORMAT := $_pandocformat
PANDOCEXT := $_pandocext
MANUALVERSION := $_manualversion
ZLIB_LIBS := $ZLIB_LIBS
ZLIB_CFLAGS := $ZLIB_CFLAGS

prefix = $prefix
exec_prefix = $exec_prefix
bindir = $bindir
libdir = $libdir
datarootdir = $datarootdir
datadir = $datadir
mandir = $mandir
docdir = $docdir

$_config_mk_data
$(cat config.mk.engines)

INCLUDES += $INCLUDES
OBJS += $OBJS
DEFINES += $DEFINES
LDFLAGS += $LDFLAGS

PLUGIN_LDFLAGS = $PLUGIN_LDFLAGS
$_mak_plugins

port_mk = $_port_mk
EOF
rm -f config.mk.engines
copy_if_changed config.mk.new config.mk config.h

#
# Create a custom Makefile when building outside the source tree
# TODO: Add a better check than just looking for 'Makefile'
#
if test ! -f Makefile.common ; then
echo "Creating Makefile"

cat > Makefile.new << EOF
# -------- Generated by configure -----------
srcdir = $_srcdir
vpath %.h \$(srcdir)
vpath %.cpp \$(srcdir)
vpath %.c \$(srcdir)
vpath %.m \$(srcdir)
vpath %.mm \$(srcdir)
vpath %.asm \$(srcdir)
vpath %.s \$(srcdir)
vpath %.S \$(srcdir)
vpath %.rc \$(srcdir)
vpath %.md \$(srcdir)
include \$(srcdir)/Makefile
EOF
copy_if_changed Makefile.new Makefile

fi

copy_if_changed engines/engines.mk.new engines/engines.mk
copy_if_changed engines/detection_table.h.new engines/detection_table.h
copy_if_changed engines/plugins_table.h.new engines/plugins_table.h

touch configure.stamp