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 2
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#

# Save the current environment variables for next runs
SAVED_CONFIGFLAGS=$@
SAVED_LDFLAGS=$LDFLAGS
SAVED_CXX=$CXX
SAVED_CXXFLAGS=$CXXFLAGS
SAVED_CPPFLAGS=$CPPFLAGS
SAVED_ASFLAGS=$ASFLAGS
SAVED_WINDRESFLAGS=$WINDRESFLAGS

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

# 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"
	export PATH
	unset ac_TEMP_PATH
fi

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

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

# Add an engine: id name build subengines
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}"
	for sub in ${4}; do
		set_var _engine_${sub}_sub "yes"
	done
}

add_engine scumm "SCUMM" yes "scumm_7_8 he"
add_engine scumm_7_8 "v7 & v8 games" yes
add_engine he "HE71+ games" yes
add_engine agi "AGI" yes
add_engine agos "AGOS" yes "agos2"
add_engine agos2 "AGOS 2 games" yes
add_engine cge "CGE" no
add_engine cine "Cinematique evo 1" yes
add_engine composer "Magic Composer" no
add_engine cruise "Cinematique evo 2" yes
add_engine draci "Dragon History" yes
add_engine drascula "Drascula: The Vampire Strikes Back" yes
add_engine dreamweb "Dreamweb" no
add_engine gob "Gobli*ns" yes
add_engine groovie "Groovie" yes "groovie2"
add_engine groovie2 "Groovie 2 games" no
add_engine hugo "Hugo Trilogy" yes
add_engine kyra "Legend of Kyrandia" yes "lol"
add_engine lol "Lands of Lore" yes
add_engine lastexpress "The Last Express" no
add_engine lure "Lure of the Temptress" yes
add_engine m4 "M4/MADS" no
add_engine made "MADE" yes
add_engine mohawk "Mohawk" yes "cstime myst riven"
add_engine cstime "Where in Time is Carmen Sandiego?" no
add_engine riven "Riven: The Sequel to Myst" no
add_engine myst "Myst" no
add_engine parallaction "Parallaction" yes
add_engine queen "Flight of the Amazon Queen" yes
add_engine saga "SAGA" yes "ihnm saga2"
add_engine ihnm "IHNM" yes
add_engine saga2 "SAGA 2 games" no
add_engine sci "SCI" yes "sci32"
add_engine sci32 "SCI32 games" no
add_engine sky "Beneath a Steel Sky" yes
add_engine sword1 "Broken Sword" yes
add_engine sword2 "Broken Sword II" yes
add_engine sword25 "Broken Sword 2.5" no
add_engine teenagent "Teen Agent" yes
add_engine testbed "TestBed: the Testing framework" no
add_engine tinsel "Tinsel" yes
add_engine toon "Toonstruck" yes
add_engine touche "Touche: The Adventures of the Fifth Musketeer" yes
add_engine tsage "Ringworld: Revenge Of The Patriarch" yes
add_engine tucker "Bud Tucker in Double Trouble" yes

#
# Default settings
#
# Default lib behaviour yes/no/auto
_vorbis=auto
_tremor=auto
_tremolo=no
_flac=auto
_mad=auto
_alsa=auto
_seq_midi=auto
_timidity=auto
_zlib=auto
_sparkle=auto
_png=auto
_theoradec=auto
_faad=auto
_fluidsynth=auto
_opengl=auto
_opengles=auto
_readline=auto
_taskbar=yes
_updates=no
_libunity=auto
# Default option behaviour yes/no
_debug_build=auto
_release_build=auto
_optimizations=auto
_verbose_build=no
_text_console=no
_mt32emu=yes
_build_scalers=yes
_build_hq_scalers=yes
_enable_prof=no
_global_constructors=no
_bink=yes
# Default vkeybd/keymapper options
_vkeybd=no
_keymapper=no
# GUI translation options
_translation=yes
# Default platform settings
_backend=sdl
_16bit=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
# Default commands
_ranlib=ranlib
_strip=strip
_ar="ar cru"
_as="as"
_windres=windres
_stagingpath="staging"
_win32path="c:/scummvm"
_aos4path="Games:ScummVM"
_staticlibpath=/sw
_sdlconfig=sdl-config
_sdlpath="$PATH"
_nasmpath="$PATH"
NASMFLAGS=""
NASM=""
_tainted_build=no
# The following variables are automatically detected, and should not
# be modified otherwise. Consider them read-only.
_posix=no
_endian=unknown
_need_memalign=yes
_have_x86=no



# 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=""

_srcdir=`dirname $0`
_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 $INCLUDES $TMPC -o $TMPO$HOSTEXEEXT $@" >> "$TMPLOG"
	rm -f "$TMPO$HOSTEXEEXT"
	( $CXX $LDFLAGS $CXXFLAGS $INCLUDES "$TMPC" -o "$TMPO$HOSTEXEEXT" "$@" ) >> "$TMPLOG" 2>&1
	TMPR="$?"
	echo "return code: $TMPR" >> "$TMPLOG"
	echo >> "$TMPLOG"
	return "$TMPR"
}

cc_check_clean() {
	rm -rf $TMPC $TMPO $TMPO.o $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 - | fgrep "$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
}

#
# Determine sdl-config
#
# TODO: small bit of code to test sdl usability
find_sdlconfig() {
	echo_n "Looking for sdl-config... "
	sdlconfigs="$_sdlconfig:sdl-config:sdl11-config:sdl12-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 $_sdlconfig
				# Save the prefix
				_sdlpath=$path_dir
				if test `basename $path_dir` = bin ; then
					_sdlpath=`dirname $path_dir`
				fi
				# 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 extension used for executables
#
get_system_exe_extension() {
	case $1 in
	arm-riscos)
		_exeext=",ff8"
		;;
	dreamcast | ds | gamecube | n64 | ps2 | psp | wii)
		_exeext=".elf"
		;;
	gph-linux)
		_exeext=".gph"
		;;
	mingw* | *os2-emx | wince)
		_exeext=".exe"
		;;
	*)
		_exeext=""
		;;
	esac
}

#
# Generic options functions
#

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

# Show an error about an unknown option
option_error() {
	echo "error: unrecognised option: $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
get_engine_sub() {
	sub=`get_var _engine_$1_sub`
	if test -z "$sub" ; then
		sub=no
	fi
	echo $sub
}

# 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 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 test "`get_engine_sub ${engine}`" != "no" -a "$opt" != "yes" ; then
		option_error
		return
	fi

	if test "$opt" = "static" -o "$opt" = "dynamic" -o "$opt" = "yes" ; then
		if test "`get_engine_name ${engine}`" != "" ; then
			set_var _engine_${engine}_build "$opt"
		else
			option_error
		fi
	else
		option_error
	fi
}

# 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
		option_error
	fi
}

# Show the configure help line for a given engine
show_engine_help() {
	if test `get_engine_build $1` = yes ; then
		option="disable"
		do="don't "
	else
		option="enable"
		do=""
	fi
	name=`get_engine_name $1`
	option_help ${option}-${1} "${do}build the ${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() {
	if test `get_engine_build $1` = yes ; then
		option="disable"
		do="exclude"
	else
		option="enable"
		do="include"
	fi
	name=`get_engine_name $1`
	parent=`get_engine_name $2`
	option_help ${option}-${1} "${do} the ${name} in ${parent} engine"
}

# Prepare the strings about the engines to build
prepare_engine_build_strings() {
	string=`get_engine_build_string $1 static`
	if test -n "$string" ; then
		_engines_built_static="${_engines_built_static}#$string@"
	fi

	string=`get_engine_build_string $1 dynamic`
	if test -n "$string" ; then
		_engines_built_dynamic="${_engines_built_dynamic}#$string@"
	fi

	string=`get_engine_build_string $1 no`
	if test -n "$string" ; then
		_engines_skipped="${_engines_skipped}#$string@"
	fi

	string=`get_engine_build_string $1 wip`
	if test -n "$string" ; then
		_engines_built_wip="${_engines_built_wip}#$string@"
	fi

}

# Get the string about building an engine
get_engine_build_string() {
	engine_string=""
	engine_build=`get_engine_build $1`
	engine_build_default=`get_engine_build_default $1`
	show=no

	# Check if the current engine should be shown for the current status
	if test $engine_build = $2 ; then
		show=yes
	else
		# Test for disabled sub-engines
		if test $2 = no ; then
			for subeng in `get_engine_subengines $1` ; do
				if test `get_engine_build $subeng` = no ; then
					engine_build=no
					show=yes
				fi
			done
		fi
		# Test for enabled wip sub-engines
		if test $2 = wip ; then
			for subeng in `get_engine_subengines $1` ; do
				if test `get_engine_build $subeng` != no -a `get_engine_build_default $subeng` = no ; then
					show=yes
				fi
			done
		fi
	fi

	# Convert static/dynamic to yes to ease the check of subengines
	if test $engine_build != no ; then
		engine_build=yes
	fi

	# Check if it is a wip engine
	if test "$2" = "wip" -a "$engine_build" != "no" -a  "$engine_build_default" = no; then
		show=yes
	fi

	# The engine should be shown, build the string
	if test $show = yes ; then
		build_string_func=get_${1}_build_string
		if ( type $build_string_func | grep function ) 2> /dev/null > /dev/null ; then
			engine_string=`$build_string_func $1 $engine_build $2`
		else
			engine_string=`get_subengines_build_string $1 $engine_build "" $2`
		fi

		engine_string="`get_engine_name $1` $engine_string"
	fi

	echo $engine_string
}

# Get the string about building subengines
get_subengines_build_string() {
	all=yes
	parent_engine=$1
	subengine_string=$3
	parent_status=$4
	parent_engine_build_default=`get_engine_build_default $parent_engine`

	for subeng in `get_engine_subengines $parent_engine` ; do
		subengine_build=`get_engine_build $subeng`
		subengine_build_default=`get_engine_build_default $subeng`
		if test \( $subengine_build = $2 -a "$parent_status" != wip \) -o \( "$parent_status" = wip -a $subengine_build != no -a "$subengine_build_default" = no \) ; then
			subengine_string="$subengine_string [`get_engine_name $subeng`]"
		else
			all=no
		fi

		# handle engines that are on by default and have a single subengine that is off by default
		if test "$parent_status" = wip ; then
			if test $parent_engine_build_default = yes -a subengine ; then
				all=no
			fi
		fi

	done

	if test $2 != no ; then
		if test -n "$subengine_string" ; then
			if test $all = yes ; then
				subengine_string="[all games]"
			fi
		fi
	fi

	echo $subengine_string
}

# Engine specific build strings
get_scumm_build_string() {
	if test `get_engine_build $1` != no ; then
		if test $2 != no -a "$3" != wip ; then
			base="[v0-v6 games]"
		fi
		get_subengines_build_string $1 $2 "$base" $3
	fi
}

get_saga_build_string() {
	if test `get_engine_build $1` != no ; then
		if test $2 != no -a "$3" != wip; then
			base="[ITE]"
		fi
		get_subengines_build_string $1 $2 "$base" $3
	fi
}

#
# Greet user
#
echo "Running ScummVM configure..."
echo "Configure run on" `date` > $TMPLOG

#
# 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 test `get_engine_sub $engine` = no ; then
				engines_help="$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 (android, bada, dc, dingux, ds, gp2x, gph,
                          iphone, linuxmoto, maemo, n64, null, openpandora, ps2,
                          psp, samsungtv, sdl, webos, wii, wince) [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: android for Android
                                           bada for Samsung BADA
                                           caanoo for Caanoo
                                           dingux for Dingux
                                           dreamcast for Sega Dreamcast
                                           ds for Nintendo DS
                                           gamecube for Nintendo GameCube
                                           gp2x for GP2X
                                           gp2xwiz for GP2X Wiz
                                           iphone for Apple iPhone
                                           linupy for Yopy PDA
                                           maemo for Nokia Maemo
                                           motoezx for MotoEZX
                                           motomagx for MotoMAGX
                                           n64 for Nintendo 64
                                           openpandora for OpenPandora
                                           ps2 for PlayStation 2
                                           ps3 for PlayStation 3
                                           psp for PlayStation Portable
                                           samsungtv for Samsung TV
                                           webos for HP Palm WebOS
                                           wii for Nintendo Wii
                                           wince for Windows CE

Game engines:
  --enable-all-engines     enable all engines, including those which are
                           broken or unsupported
  --disable-all-engines    disable all engines
$engines_help
Optional Features:
  --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-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-16bit          don't enable 16bit color support
  --disable-savegame-timestamp don't use timestamps for blank savegame descriptions
  --disable-scalers        exclude scalers
  --disable-hq-scalers     exclude HQ2x and HQ3x scalers
  --disable-translation    don't build support for translated messages
  --disable-taskbar        don't build support for taskbar and launcher integration
  --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
  --disable-bink           don't build with Bink video support

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)
  --with-vorbis-prefix=DIR Prefix where libvorbis is installed (optional)
  --disable-vorbis         disable Ogg 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-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-opengl-prefix=DIR Prefix where OpenGL (ES) is installed (optional)
  --disable-opengl         disable OpenGL (ES) support [autodetect]

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

  --with-theoradec-prefix=DIR Prefix where libtheoradec is installed (optional)
  --disable-theoradec      disable Theora 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-sparkle-prefix=DIR   Prefix where sparkle is installed (MacOSX only - optional)
  --disable-sparkle        disable sparkle automatic update support [MacOSX only - autodetect]

  --with-sdl-prefix=DIR    Prefix where the sdl-config script is
                           installed (optional)

  --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]

Some influential environment variables:
  LDFLAGS        linker flags, e.g. -L<lib dir> if you have libraries in a
                 nonstandard directory <lib dir>
  CXX            C++ compiler command
  CXXFLAGS       C++ compiler flags
  CPPFLAGS       C++ preprocessor flags, e.g. -I<include dir> if you have
                 headers in a nonstandard directory <include dir>
  ASFLAGS        assembler flags
  WINDRESFLAGS   Windows resource compiler flags

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

for ac_option in $@; do
	case "$ac_option" in
	--disable-16bit)          _16bit=no       ;;
	--disable-savegame-timestamp) _savegame_timestamp=no ;;
	--disable-scalers)        _build_scalers=no ;;
	--disable-hq-scalers)     _build_hq_scalers=no ;;
	--enable-alsa)            _alsa=yes       ;;
	--disable-alsa)           _alsa=no        ;;
	--enable-seq-midi)        _seq_midi=yes   ;;
	--disable-seq-midi)       _seq_midi=no    ;;
	--enable-timidity)        _timidity=yes   ;;
	--disable-timidity)       _timidity=no    ;;
	--enable-vorbis)          _vorbis=yes     ;;
	--disable-vorbis)         _vorbis=no      ;;
	--enable-tremor)          _tremor=yes     ;;
	--disable-tremor)         _tremor=no      ;;
	--enable-flac)            _flac=yes       ;;
	--disable-flac)           _flac=no        ;;
	--enable-mad)             _mad=yes        ;;
	--disable-mad)            _mad=no         ;;
	--enable-zlib)            _zlib=yes       ;;
	--disable-zlib)           _zlib=no        ;;
	--enable-sparkle)         _sparkle=yes    ;;
	--disable-sparkle)        _sparkle=no     ;;
	--enable-nasm)            _nasm=yes       ;;
	--disable-nasm)           _nasm=no        ;;
	--disable-png)            _png=no         ;;
	--enable-png)             _png=yes        ;;
	--disable-theoradec)      _theoradec=no   ;;
	--enable-theoradec)       _theoradec=yes  ;;
	--disable-faad)           _faad=no        ;;
	--enable-faad)            _faad=yes       ;;
	--disable-fluidsynth)     _fluidsynth=no  ;;
	--enable-readline)        _readline=yes   ;;
	--disable-readline)       _readline=no    ;;
	--enable-taskbar)         _taskbar=yes    ;;
	--disable-taskbar)        _taskbar=no     ;;
	--enable-updates)         _updates=yes    ;;
	--disable-updates)        _updates=no     ;;
	--enable-libunity)        _libunity=yes   ;;
	--disable-libunity)       _libunity=no    ;;
	--enable-opengl)          _opengl=yes     ;;
	--disable-opengl)         _opengl=no      ;;
	--enable-bink)            _bink=yes       ;;
	--disable-bink)           _bink=no        ;;
	--enable-verbose-build)   _verbose_build=yes ;;
	--enable-plugins)         _dynamic_modules=yes ;;
	--default-dynamic)        _plugins_default=dynamic ;;
	--enable-mt32emu)         _mt32emu=yes    ;;
	--disable-mt32emu)        _mt32emu=no     ;;
	--enable-translation)     _translation=yes ;;
	--disable-translation)    _translation=no ;;
	--enable-vkeybd)          _vkeybd=yes     ;;
	--disable-vkeybd)         _vkeybd=no      ;;
	--enable-keymapper)       _keymapper=yes  ;;
	--disable-keymapper)      _keymapper=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-alsa-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		ALSA_CFLAGS="-I$arg/include"
		ALSA_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-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-png-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		PNG_CFLAGS="-I$arg/include"
		PNG_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-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 $ac_option | cut -d '=' -f 2`
		SPARKLE_CFLAGS="-F$arg"
		SPARKLE_LIBS="-F$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-opengl-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		OPENGL_CFLAGS="-I$arg/include"
		OPENGL_LIBS="-L$arg/lib"
		;;
	--backend=*)
		_backend=`echo $ac_option | cut -d '=' -f 2`
		;;
	--enable-debug)
		_debug_build=yes
		;;
	--disable-debug)
		_debug_build=no
		;;
	--enable-Werror)
		CXXFLAGS="$CXXFLAGS -Werror"
		;;
	--enable-release-mode)
		_release_build=yes
		;;
	--disable-release-mode)
		_release_build=no
		;;
	--enable-release)
		_release_build=yes
		_optimizations=yes
		;;
	--disable-release)
		_release_build=no
		_optimizations=no
		;;
	--enable-optimizations)
		_optimizations=yes
		;;
	--disable-optimizations)
		_optimizations=no
		;;
	--enable-profiling)
		_enable_prof=yes
		;;
	--with-sdl-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		_sdlpath="$arg:$arg/bin"
		;;
	--with-nasm-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		_nasmpath="$arg:$arg/bin"
		;;
	--with-staticlib-prefix=*)
		_staticlibpath=`echo $ac_option | cut -d '=' -f 2`
		;;
	--host=*)
		_host=`echo $ac_option | cut -d '=' -f 2`
		;;
	--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-*)
		engine_enable `echo $ac_option | cut -d '-' -f 4-`
		;;
	--disable-*)
		engine_disable `echo $ac_option | cut -d '-' -f 4-`
		;;
	*)
		option_error
		;;
	esac;
done;

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

case $_host in
android | android-v7a)
	_host_os=android
	_host_cpu=arm
	_host_alias=arm-linux-androideabi
	;;
arm-riscos)
	_host_os=riscos
	_host_cpu=arm
	;;
bada)
	_host_os=bada
	if test "$_debug_build" = yes; then
		_host_cpu=i686
		_host_alias=i686-mingw32
	else
		_host_cpu=arm
		_host_alias=arm-samsung-nucleuseabi
	fi
	;;
caanoo)
	_host_os=gph-linux
	_host_cpu=arm
	_host_alias=arm-none-linux-gnueabi
	;;
dingux)
	_host_os=linux
	_host_cpu=mipsel
	_host_alias=mipsel-linux
	;;
dreamcast)
	_host_os=dreamcast
	_host_cpu=sh
	_host_alias=sh-elf
	CXXFLAGS="$CXXFLAGS -ml -m4-single-only"
	LDFLAGS="$LDFLAGS -ml -m4-single-only"
	;;
ds)
	_host_os=ds
	_host_cpu=arm
	_host_alias=arm-eabi
	;;
gamecube)
	_host_os=gamecube
	_host_cpu=ppc
	_host_alias=powerpc-gekko
	;;
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
	;;
linupy)
	_host_os=linux
	_host_cpu=arm
	;;
maemo)
	_host_os=maemo
	_host_cpu=arm
	_host_alias=arm-linux

	# 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'
	;;
motoezx)
	_host_os=linux
	_host_cpu=arm
	_host_alias=arm-linux-gnu
	;;
motomagx)
	_host_os=linux
	_host_cpu=arm
	_host_alias=arm-linux-gnueabi
	;;
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=ppc
	;;
ps2)
	_host_os=ps2
	_host_cpu=mips64r5900el
	_host_alias=ee
	;;
ps3)
	_host_os=ps3
	_host_cpu=ppc
	_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'
	;;
psp)
	_host_os=psp
	_host_cpu=mipsallegrexel
	_host_alias=psp
	;;
samsungtv)
	_host_os=linux
	_host_cpu=arm
	_host_alias=arm-linux-gnueabi
	;;
webos)
	_host_os=webos
	_host_cpu=arm
	_host_alias=arm-none-linux-gnueabi
	# The prefix is always the same on WebOS 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$prefix" = xNONE && prefix=/media/cryptofs/apps/usr/palm/applications/org.scummvm.scummvm
	# WebOS apps are installed into app-specific directories. The
	# default directory structure of ScummVM makes no sense here so we
	# hardcode WebOS specific directories here.
	datarootdir='${prefix}/data'
	datadir='${datarootdir}'
	docdir='${prefix}/doc'
	;;
wii)
	_host_os=wii
	_host_cpu=ppc
	_host_alias=powerpc-gekko
	;;
wince)
	_host_os=wince
	_host_cpu=arm
	_host_alias=arm-wince-mingw32ce
	;;
*)
	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 cru"
	_as="$_host_alias-as"
	_windres=$_host_alias-windres
fi

#
# Determine extra build flags for debug and/or release builds
#

case $_host in
caanoo | gp2x | gp2xwiz | openpandora | ps2)
	if test "$_debug_build" = auto; then
		# If you want to debug one of these platforms, use '--disable-release --enable-debug'
		_debug_build=no
	fi

	if test "$_release_build" = auto; then
		# Enable release build by default.
		_release_build=yes
	fi

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

if test "$_debug_build" != no; then
	# debug mode not explicitly disabled -> compile with -g
	CXXFLAGS="$CXXFLAGS -g"
fi

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


#
# 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"; then
		echo "Please set ANDROID_SDK in your environment. export ANDROID_SDK=<path to Android SDK>"
		exit 1
	fi
	if test -z "$ANDROID_NDK"; then
		echo "Please set ANDROID_NDK in your environment. export ANDROID_NDK=<path to Android NDK>"
		exit 1
	fi
	;;
bada)
	if test -z "$BADA_SDK"; then
		echo "Please set BADA_SDK in your environment. export BADA_SDK=<path to Bada SDK>"
		exit 1
	fi
	;;
ds | gamecube | wii)
	if test -z "$DEVKITPRO"; then
		echo "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to devkitPRO>"
		exit 1
	fi
	;;
n64)
	if test -z "$N64SDK"; then
		echo "Please set N64SDK in your environment. export N64SDK=<path to n64 sdk>"
		exit 1
	fi
	;;
ps2)
	if test -z "$PS2SDK"; then
		echo "Please set PS2SDK in your environment. export PS2SDK=<path to ps2 sdk>"
		exit 1
	fi
	;;
ps3)
	if test -z "$PS3DEV"; then
		echo "Please set PS3DEV in your environment. export PS3DEV=<path to ps3 toolchain>"
		exit 1
	fi
	;;
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 "$PSPSDK"; then
		echo "Please set PSPSDK in your environment. export PSPSDK=<path to psp sdk>"
		exit 1
	fi
	;;
webos)
	if test -z "$WEBOS_SDK"; then
		echo "Please set WEBOS_SDK in your environment. export WEBOS_SDK=<path to WebOS SDK>"
		exit 1
	fi
	if test -z "$WEBOS_PDK"; then
		echo "Please set WEBOS_PDK in your environment. export WEBOS_PDK=<path to WebOS PDK>"
		exit 1
	fi
	;;
*)
	;;
esac

#
# 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 $LDFLAGS -o $TMPO.o -c tmp_cxx_compiler.cpp" 2> /dev/null && cc_check_clean tmp_cxx_compiler.cpp
	else
		eval "$1 $CXXFLAGS $LDFLAGS -o $TMPO$HOSTEXEEXT tmp_cxx_compiler.cpp" 2> /dev/null && eval "$TMPO$HOSTEXEEXT 2> /dev/null" && 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-g++ $_host-c++"
	else
		compilers="g++ c++"
	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

# By default, use the C++ compiler as linker
LD=$CXX

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

# We first check whether we have an Intel compiler here, since the Intel compiler
# can also fake itself as an gcc (to ease compatibility with common Linux etc.
# programs).
have_icc=no
cc_check_define __INTEL_COMPILER && have_icc=yes

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

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

have_gcc=no
cc_check_define __GNUC__ && have_gcc=yes

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 -n "`gcc_get_define __clang__`"; then
		add_line_to_config_mk 'HAVE_CLANG = 1'
	fi

	if test "$_cxx_major" -eq 2 && test "$_cxx_minor" -ge 95 || \
	   test "$_cxx_major" -gt 2 ; then
		cxx_version="$cxx_version, ok"
		cxx_verc_fail=no
	else
		cxx_version="$cxx_version, bad"
		cxx_verc_fail=yes
	fi
elif test "$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"
			cxx_verc_fail=yes
		fi
		echo non-gcc compiler version ${cxx_version}
	else
		cxx_version="not found"
		cxx_verc_fail=yes
		echo found non-gcc compiler version ${cxx_version}
	fi

	case $_host_os in
		irix*)
			case $cxx_version in
				7.4.4*)
					# We just assume this is SGI MIPSpro
					_cxx_major=7
					_cxx_minor=4
					cxx_verc_fail=no
					add_line_to_config_mk 'CXX_UPDATE_DEP_FLAG = -MDupdate "$(*D)/$(DEPDIR)/$(*F).d"'
					add_line_to_config_mk '-include Makedepend'
					;;
				*)
					cxx_version="$cxx_version, bad"
					cxx_verc_fail=yes
					;;
			esac
			;;
		*)
			cxx_version="$cxx_version, bad"
			cxx_verc_fail=yes
			;;
	esac
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"
	echo "Please ensure you are using GCC >= 2.95"
	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 >= 3.0 and for ICC.
#
if test "$have_gcc" = yes ; then
	if test "$_cxx_major" -ge "3" ; then
		case $_host_os in
		# newlib-based system include files suppress non-C89 function
		# declarations under __STRICT_ANSI__
		amigaos* | android | bada | dreamcast | ds | gamecube | mingw* | n64 | psp | ps2 | ps3 | wii | wince )
			;;
		*)
			CXXFLAGS="$CXXFLAGS -ansi"
			;;
		esac
		CXXFLAGS="$CXXFLAGS -W -Wno-unused-parameter"
		add_line_to_config_mk 'HAVE_GCC3 = 1'
		add_line_to_config_mk 'CXX_UPDATE_DEP_FLAG = -MMD -MF "$(*D)/$(DEPDIR)/$(*F).d" -MQ "$@" -MP'
	fi;

	if test "$_cxx_major" -eq 4 && test "$_cxx_minor" -ge 3 || \
	   test "$_cxx_major" -gt 4 ; then
		CXXFLAGS="$CXXFLAGS -Wno-empty-body"
	else
		CXXFLAGS="$CXXFLAGS -Wconversion"
	fi;
elif test "$have_icc" = yes ; then
	add_line_to_config_mk 'CXX_UPDATE_DEP_FLAG = -MMD -MF "$(*D)/$(DEPDIR)/$(*F).d" -MQ "$@" -MP'
fi;

# 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.
case $_host_os in
android | gamecube | psp | wii)
	;;
*)
	# ICC does not support pedantic, while GCC and clang do.
	if test "$have_icc" = no ; then
		CXXFLAGS="$CXXFLAGS -pedantic"
	fi
	;;
esac

# If possible, we want to use -Wglobal-constructors
# However, not all compilers support that, so check whether the active one does.
echocheck "whether -Wglobal-constructors work"
cat > $TMPC << EOF
int main() { return 0; }
EOF
cc_check -Wglobal-constructors && _global_constructors=yes

if test "$_global_constructors" = yes; then
	CXXFLAGS="$CXXFLAGS -Wglobal-constructors"
fi
echo $_global_constructors

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

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 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 $TMPO.o tmp_find_type_with_size.cpp 2>/dev/null ; then
			break
		else
			if test "$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
}

#
# 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

#
# 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 $_host_cpu in
	i[3-6]86 | x86_64 | ppc*)
		# Unaligned access should work
		_need_memalign=no
		;;
	alpha* | arm* | bfin* | hp* | mips* | sh* | sparc* | ia64 | nv1*)
		# Unaligned access is not supported or extremely slow.
		_need_memalign=yes
		;;
	*)
		# Status of unaligned access is unknown, so assume the worst.
		_need_memalign=yes
		;;
esac
echo "$_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
	arm*)
		echo "ARM"
		define_in_config_if_yes yes 'USE_ARM_SCALER_ASM'
		define_in_config_if_yes yes 'USE_ARM_SOUND_ASM'
		define_in_config_if_yes yes 'USE_ARM_SMUSH_ASM'
		define_in_config_if_yes yes 'USE_ARM_GFX_ASM'
		define_in_config_if_yes yes 'USE_ARM_COSTUME_ASM'

		DEFINES="$DEFINES -DARM_TARGET"
		;;
	i[3-6]86)
		echo "x86"
		_have_x86=yes
		define_in_config_h_if_yes $_have_x86 'HAVE_X86'
		;;
	mips*)
		echo "MIPS"
		DEFINES="$DEFINES -DMIPS_TARGET"
		;;
	ppc*)
		echo "PowerPC"
		DEFINES="$DEFINES -DPPC_TARGET"
		;;
	x86_64)
		echo "x86_64"
		;;
	*)
		echo "unknown ($_host_cpu)"
		;;
esac


#
# Determine build settings
#
echo_n "Checking hosttype... "
echo $_host_os
case $_host_os in
	amigaos*)
		LDFLAGS="$LDFLAGS -use-dynld"
		LDFLAGS="$LDFLAGS -L/sdk/local/newlib/lib"
		# We have to use 'long' for our 4 byte typedef because AmigaOS already typedefs (u)int32
		# as (unsigned) long, and consequently we'd get a compiler error otherwise.
		type_4_byte='long'
		add_line_to_config_mk 'AMIGAOS = 1'
		;;
	android)
		case $_host in
			android)
				CXXFLAGS="$CXXFLAGS -march=armv5te"
				CXXFLAGS="$CXXFLAGS -mtune=xscale"
				CXXFLAGS="$CXXFLAGS -msoft-float"
				;;
			android-v7a)
				CXXFLAGS="$CXXFLAGS -march=armv7-a"
				CXXFLAGS="$CXXFLAGS -mfloat-abi=softfp"
				CXXFLAGS="$CXXFLAGS -mfpu=vfp"
				LDFLAGS="$LDFLAGS -Wl,--fix-cortex-a8"
				;;
		esac
		CXXFLAGS="$CXXFLAGS --sysroot=$ANDROID_NDK/platforms/android-4/arch-arm"
		CXXFLAGS="$CXXFLAGS -fpic"
		CXXFLAGS="$CXXFLAGS -ffunction-sections"
		CXXFLAGS="$CXXFLAGS -funwind-tables"
		if test "$_debug_build" = yes; then
			CXXFLAGS="$CXXFLAGS -fno-omit-frame-pointer"
			CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
		else
			CXXFLAGS="$CXXFLAGS -fomit-frame-pointer"
			CXXFLAGS="$CXXFLAGS -fstrict-aliasing"
		fi
		CXXFLAGS="$CXXFLAGS -finline-limit=300"
		_optimization_level=-Os
		CXXFLAGS="$CXXFLAGS -mthumb-interwork"
		# FIXME: Why is the following in CXXFLAGS and not in DEFINES? Change or document this.
		CXXFLAGS="$CXXFLAGS -D__ARM_ARCH_5__"
		CXXFLAGS="$CXXFLAGS -D__ARM_ARCH_5T__"
		CXXFLAGS="$CXXFLAGS -D__ARM_ARCH_5E__"
		CXXFLAGS="$CXXFLAGS -D__ARM_ARCH_5TE__"
		# supress 'mangling of 'va_list' has changed in GCC 4.4'
		CXXFLAGS="$CXXFLAGS -Wno-psabi"
		LDFLAGS="$LDFLAGS --sysroot=$ANDROID_NDK/platforms/android-4/arch-arm"
		LDFLAGS="$LDFLAGS -mthumb-interwork"
		add_line_to_config_mk "ANDROID_SDK = $ANDROID_SDK"
		_seq_midi=no
		;;
	bada)
		BADA_SDK_ROOT="`cygpath -m ${BADA_SDK}`"
		add_line_to_config_mk "BADA_SDK = $BADA_SDK"
		add_line_to_config_mk "BADA_SDK_ROOT = $BADA_SDK_ROOT"

		# assume dependencies have been installed in cygwin's /usr/local
		CYGWIN_USR_LOCAL="`cygpath -m /usr/local`"
		LDFLAGS="$LDFLAGS -L${CYGWIN_USR_LOCAL}/lib"
		CXXFLAGS="$CXXFLAGS -I${CYGWIN_USR_LOCAL}/include"
		;;
	beos*)
		DEFINES="$DEFINES -DSYSTEM_NOT_SUPPORTING_D_TYPE"
		# Needs -lbind -lsocket for the timidity MIDI driver
		LDFLAGS="-L/boot/home/config/lib"
		CFLAGS="-I/boot/home/config/include"
		CXXFLAGS="$CXXFLAGS -fhuge-objects"
		LIBS="$LIBS -lbind -lsocket"
		_seq_midi=no
		;;
	cygwin*)
		echo ERROR: Cygwin building is not supported by ScummVM anymore. Consider using MinGW.
		exit 1
		;;
	darwin*)
		DEFINES="$DEFINES -DMACOSX"
		LIBS="$LIBS -framework AudioUnit -framework AudioToolbox -framework Carbon -framework CoreMIDI"
		add_line_to_config_mk 'MACOSX = 1'

		# 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 $CXXFLAGS"
		fi
		;;
	dreamcast)
		DEFINES="$DEFINES -D__DC__"
		DEFINES="$DEFINES -DNONSTANDARD_PORT"
		;;
	ds)
		DEFINES="$DEFINES -D__DS__"
		DEFINES="$DEFINES -DNDS"
		DEFINES="$DEFINES -DARM9"
		DEFINES="$DEFINES -DARM"
		DEFINES="$DEFINES -DNONSTANDARD_PORT"
		CXXFLAGS="$CXXFLAGS -isystem $DEVKITPRO/libnds/include"
		CXXFLAGS="$CXXFLAGS -isystem $DEVKITPRO/devkitARM/arm-eabi/include"
		CXXFLAGS="$CXXFLAGS -mcpu=arm9tdmi"
		CXXFLAGS="$CXXFLAGS -mtune=arm9tdmi"
		CXXFLAGS="$CXXFLAGS -fomit-frame-pointer"
		CXXFLAGS="$CXXFLAGS -mthumb-interwork"
		CXXFLAGS="$CXXFLAGS -ffunction-sections"
		CXXFLAGS="$CXXFLAGS -fdata-sections"
		CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
		CXXFLAGS="$CXXFLAGS -fuse-cxa-atexit"
		LDFLAGS="$LDFLAGS -specs=ds_arm9.specs"
		LDFLAGS="$LDFLAGS -mthumb-interwork"
		LDFLAGS="$LDFLAGS -mno-fpu"
		LDFLAGS="$LDFLAGS -Wl,-Map,map.txt"
		if test "$_dynamic_modules" = no ; then
			LDFLAGS="$LDFLAGS -Wl,--gc-sections"
		else
			LDFLAGS="$LDFLAGS -Wl,--no-gc-sections"
			# TODO automate this required 2 step linking phase
			# LDFLAGS="$LDFLAGS -Wl,--retain-symbols-file,ds.syms"
		fi
		LDFLAGS="$LDFLAGS -L$DEVKITPRO/libnds/lib"
		LIBS="$LIBS -lnds9"
		;;
	freebsd*)
		LDFLAGS="$LDFLAGS -L/usr/local/lib"
		CXXFLAGS="$CXXFLAGS -I/usr/local/include"
		;;
	gamecube)
		_optimization_level=-Os
		CXXFLAGS="$CXXFLAGS -mogc"
		CXXFLAGS="$CXXFLAGS -mcpu=750"
		CXXFLAGS="$CXXFLAGS -meabi"
		CXXFLAGS="$CXXFLAGS -mhard-float"
		CXXFLAGS="$CXXFLAGS -ffunction-sections"
		CXXFLAGS="$CXXFLAGS -fdata-sections"
		CXXFLAGS="$CXXFLAGS -fmodulo-sched"
		CXXFLAGS="$CXXFLAGS -fuse-cxa-atexit"
		CXXFLAGS="$CXXFLAGS -I$DEVKITPRO/libogc/include"
		# libogc is required to link the cc tests (includes _start())
		LDFLAGS="$LDFLAGS -mogc"
		LDFLAGS="$LDFLAGS -mcpu=750"
		LDFLAGS="$LDFLAGS -L$DEVKITPRO/libogc/lib/cube"
		LDFLAGS="$LDFLAGS -logc"
		if test "$_dynamic_modules" = "yes" ; then
			# retarded toolchain patch forces --gc-sections, overwrite it
			LDFLAGS="$LDFLAGS -Wl,--no-gc-sections"
		fi
		;;
	haiku*)
		DEFINES="$DEFINES -DSYSTEM_NOT_SUPPORTING_D_TYPE"
		# Needs -lnetwork for the timidity MIDI driver
		LIBS="$LIBS -lnetwork"
		_seq_midi=no
		;;
	irix*)
		DEFINES="$DEFINES -DIRIX"
		DEFINES="$DEFINES -DSYSTEM_NOT_SUPPORTING_D_TYPE"
		LIBS="$LIBS -lmd -lfastm -lm"
		_ranlib=:
		;;
	linux* | uclinux*)
		# When not cross-compiling, enable large file support, but don't
		# care if getconf doesn't exist or doesn't recognize LFS_CFLAGS.
		if test -z "$_host"; then
			CXXFLAGS="$CXXFLAGS $(getconf LFS_CFLAGS 2>/dev/null)"
		fi
		;;
	maemo)
		DEFINES="$DEFINES -DMAEMO"
		;;
	mingw*)
		DEFINES="$DEFINES -DWIN32"
		DEFINES="$DEFINES -D__USE_MINGW_ANSI_STDIO=0"
		LDFLAGS="$LDFLAGS -static-libgcc -static-libstdc++"
		LIBS="$LIBS -lmingw32 -lwinmm -lgdi32"
		OBJS="$OBJS scummvmwinres.o"
		add_line_to_config_mk 'WIN32 = 1'
		;;
	mint*)
		DEFINES="$DEFINES -DSYSTEM_NOT_SUPPORTING_D_TYPE"
		;;
	n64)
		DEFINES="$DEFINES -D__N64__"
		DEFINES="$DEFINES -DLIMIT_FPS"
		DEFINES="$DEFINES -DNONSTANDARD_PORT"
		DEFINES="$DEFINES -DDISABLE_COMMAND_LINE"
		DEFINES="$DEFINES -DDISABLE_DEFAULT_SAVEFILEMANAGER"
		DEFINES="$DEFINES -DDISABLE_DOSBOX_OPL"
		DEFINES="$DEFINES -DDISABLE_FANCY_THEMES"
		DEFINES="$DEFINES -DDISABLE_NES_APU"
		DEFINES="$DEFINES -DDISABLE_SID"
		DEFINES="$DEFINES -DREDUCE_MEMORY_USAGE"
		;;
	ps2)
		CXXFLAGS="$CXXFLAGS -G2"
		DEFINES="$DEFINES -D_EE"
		DEFINES="$DEFINES -D__PLAYSTATION2__"
		;;
	ps3)
		# Force use of SDL from the ps3 toolchain
		_sdlpath="$PS3DEV/portlibs/ppu:$PS3DEV/portlibs/ppu/bin"

		DEFINES="$DEFINES -DPLAYSTATION3"
		CXXFLAGS="$CXXFLAGS -mcpu=cell -mminimal-toc -I$PS3DEV/psl1ght/ppu/include -I$PS3DEV/portlibs/ppu/include"
		LDFLAGS="$LDFLAGS -L$PS3DEV/psl1ght/ppu/lib -L$PS3DEV/portlibs/ppu/lib"
		add_line_to_config_mk 'PLAYSTATION3 = 1'
		add_line_to_config_h "#define PREFIX \"${prefix}\""
		;;
	psp)
		if test -d "$PSPDEV/psp/lib"; then
			LDFLAGS="$LDFLAGS -L$PSPDEV/psp/lib"
		fi
		LDFLAGS="$LDFLAGS -L$PSPSDK/lib"
		LDFLAGS="$LDFLAGS -specs=$_srcdir/backends/platform/psp/psp.spec"
		_optimization_level=-O3
		CXXFLAGS="$CXXFLAGS -I$PSPSDK/include"
		# FIXME: Why is the following in CXXFLAGS and not in DEFINES? Change or document this.
		CXXFLAGS="$CXXFLAGS -D_PSP_FW_VERSION=150"
		;;
	solaris*)
		DEFINES="$DEFINES -DSOLARIS"
		DEFINES="$DEFINES -DSYSTEM_NOT_SUPPORTING_D_TYPE"
		# Needs -lbind -lsocket for the timidity MIDI driver
		LIBS="$LIBS -lnsl -lsocket"
		;;
	webos)
		CXXFLAGS="$CXXFLAGS -I$WEBOS_PDK/include"
		CXXFLAGS="$CXXFLAGS -I$WEBOS_PDK/include/SDL"
		CXXFLAGS="$CXXFLAGS -I$WEBOS_PDK/device/usr/include"
		# These compiler options are needed to support the Palm Pixi
		CXXFLAGS="$CXXFLAGS -mcpu=arm1136jf-s"
		CXXFLAGS="$CXXFLAGS -mfpu=vfp "
		CXXFLAGS="$CXXFLAGS -mfloat-abi=softfp"
		LDFLAGS="$LDFLAGS -L$WEBOS_PDK/device/lib"
		LDFLAGS="$LDFLAGS -L$WEBOS_PDK/device/usr/lib"
		LDFLAGS="$LDFLAGS -Wl,--allow-shlib-undefined"
		LDFLAGS="$LDFLAGS --sysroot=$WEBOS_PDK/arm-gcc/sysroot"
		add_line_to_config_mk "WEBOS_SDK = $WEBOS_SDK"
		_seq_midi=no
		;;
	wii)
		_optimization_level=-Os
		CXXFLAGS="$CXXFLAGS -mrvl"
		CXXFLAGS="$CXXFLAGS -mcpu=750"
		CXXFLAGS="$CXXFLAGS -meabi"
		CXXFLAGS="$CXXFLAGS -mhard-float"
		CXXFLAGS="$CXXFLAGS -ffunction-sections"
		CXXFLAGS="$CXXFLAGS -fdata-sections"
		CXXFLAGS="$CXXFLAGS -fmodulo-sched"
		CXXFLAGS="$CXXFLAGS -fuse-cxa-atexit"
		CXXFLAGS="$CXXFLAGS -I$DEVKITPRO/libogc/include"
		# libogc is required to link the cc tests (includes _start())
		LDFLAGS="$LDFLAGS -mrvl"
		LDFLAGS="$LDFLAGS -mcpu=750"
		LDFLAGS="$LDFLAGS -L$DEVKITPRO/libogc/lib/wii"
		LDFLAGS="$LDFLAGS -logc"
		if test "$_dynamic_modules" = "yes" ; then
			# retarded toolchain patch forces --gc-sections, overwrite it
			LDFLAGS="$LDFLAGS -Wl,--no-gc-sections"
		fi
		;;
	wince)
		_optimization_level=-O3
		CXXFLAGS="$CXXFLAGS -fno-inline-functions"
		CXXFLAGS="$CXXFLAGS -march=armv4"
		CXXFLAGS="$CXXFLAGS -mtune=xscale"
		DEFINES="$DEFINES -D_WIN32_WCE=300"
		DEFINES="$DEFINES -D__ARM__"
		DEFINES="$DEFINES -D_ARM_"
		DEFINES="$DEFINES -DUNICODE"
		DEFINES="$DEFINES -DFPM_DEFAULT"
		DEFINES="$DEFINES -DNONSTANDARD_PORT"
		DEFINES="$DEFINES -DWRAP_MALLOC"
		DEFINES="$DEFINES -DWIN32"
		DEFINES="$DEFINES -Dcdecl="
		DEFINES="$DEFINES -D__cdecl__="
		add_line_to_config_mk "WRAP_MALLOC = 1"
		;;
esac

if test -n "$_host"; then
	# Cross-compiling mode - add your target here if needed
	echo "Cross-compiling to $_host"
	case "$_host" in
		android | android-v7a)
			# we link a .so as default
			LDFLAGS="$LDFLAGS -shared"
			LDFLAGS="$LDFLAGS -Wl,-Bsymbolic,--no-undefined"
			HOSTEXEPRE=lib
			HOSTEXEEXT=.so
			_backend="android"
			_port_mk="backends/platform/android/android.mk"
			_build_scalers=no
			_seq_midi=no
			_mt32emu=no
			_timidity=no
			;;
		arm-linux|arm*-linux-gnueabi|arm-*-linux)
			;;
		arm-riscos|linupy)
			DEFINES="$DEFINES -DLINUPY"
			;;
		bada)
			_unix=yes
			_backend="bada"
			_port_mk="backends/platform/bada/bada.mk"
			if test "$_debug_build" = yes; then
				_arm_asm=no
			else
				_arm_asm=yes
			fi
			_taskbar=no
			_build_scalers=no
			_seq_midi=no
			_mt32emu=no
			_timidity=no
			_vkeybd=yes
			;;
		bfin*)
			;;
		caanoo)
			# This uses the GPH backend.
			DEFINES="$DEFINES -DGPH_DEVICE"
			DEFINES="$DEFINES -DCAANOO"
			DEFINES="$DEFINES -DREDUCE_MEMORY_USAGE"
			if test "$_debug_build" = yes; then
				DEFINES="$DEFINES -DGPH_DEBUG"
			else
				# Use -O3 on the Caanoo for non-debug builds.
				_optimization_level=-O3
			fi
			CXXFLAGS="$CXXFLAGS -mcpu=arm926ej-s"
			CXXFLAGS="$CXXFLAGS -mtune=arm926ej-s"
			ASFLAGS="$ASFLAGS"
			_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)
			DEFINES="$DEFINES -DDINGUX"
			DEFINES="$DEFINES -DDISABLE_DOSBOX_OPL"
			DEFINES="$DEFINES -DREDUCE_MEMORY_USAGE"
			ASFLAGS="$ASFLAGS"
			CXXFLAGS="$CXXFLAGS -msoft-float"
			CXXFLAGS="$CXXFLAGS -mips32"
			_backend="dingux"
			_mt32emu=no
			_vkeybd=yes
			_build_hq_scalers=no
			_keymapper=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"
			;;
		dreamcast)
			DEFINES="$DEFINES -DDISABLE_DEFAULT_SAVEFILEMANAGER"
			DEFINES="$DEFINES -DDISABLE_TEXT_CONSOLE"
			DEFINES="$DEFINES -DDISABLE_COMMAND_LINE"
			if test "$_release_build" = yes; then
				DEFINES="$DEFINES -DNOSERIAL"
			fi
			_optimization_level=-O3
			CXXFLAGS="$CXXFLAGS -funroll-loops"
			CXXFLAGS="$CXXFLAGS -fschedule-insns2"
			CXXFLAGS="$CXXFLAGS -fomit-frame-pointer"
			CXXFLAGS="$CXXFLAGS -fdelete-null-pointer-checks"
			_backend="dc"
			_build_scalers=no
			_mad=yes
			_zlib=yes
			add_line_to_config_mk 'ronindir = /usr/local/ronin'
			_port_mk="backends/platform/dc/dreamcast.mk"
			;;
		ds)
			DEFINES="$DEFINES -DDISABLE_COMMAND_LINE"
			DEFINES="$DEFINES -DDISABLE_DEFAULT_SAVEFILEMANAGER"
			DEFINES="$DEFINES -DDISABLE_DOSBOX_OPL"
			DEFINES="$DEFINES -DDISABLE_FANCY_THEMES"
			DEFINES="$DEFINES -DDISABLE_SID"
			DEFINES="$DEFINES -DDISABLE_NES_APU"
			DEFINES="$DEFINES -DDISABLE_TEXT_CONSOLE"
			DEFINES="$DEFINES -DREDUCE_MEMORY_USAGE"
			DEFINES="$DEFINES -DSTREAM_AUDIO_FROM_DISK"
			DEFINES="$DEFINES -DVECTOR_RENDERER_FORMAT=1555"
			_backend="ds"
			_build_scalers=no
			_mt32emu=no
			_port_mk="backends/platform/ds/ds.mk"
			;;
		gamecube)
			_backend="wii"
			_build_scalers=no
			_vkeybd=yes
			_mt32emu=no
			_port_mk="backends/platform/wii/wii.mk"
			add_line_to_config_mk 'GAMECUBE = 1'
			add_line_to_config_h '#define AUDIO_REVERSE_STEREO'
			add_line_to_config_h '#define GAMECUBE'
			add_line_to_config_h "/* #define DEBUG_WII_USBGECKO */"
			add_line_to_config_h "/* #define DEBUG_WII_MEMSTATS */"
			add_line_to_config_h "/* #define DEBUG_WII_GDB */"
			add_line_to_config_h "#define USE_WII_DI"
			;;
		gp2x)
			# This uses the GPH backend.
			DEFINES="$DEFINES -DGPH_DEVICE"
			DEFINES="$DEFINES -DGP2X"
			DEFINES="$DEFINES -DREDUCE_MEMORY_USAGE"
			if test "$_debug_build" = yes; then
				DEFINES="$DEFINES -DGPH_DEBUG"
			fi
			CXXFLAGS="$CXXFLAGS -march=armv4t"
			ASFLAGS="$ASFLAGS -mfloat-abi=soft"
			LDFLAGS="$LDFLAGS -static"
			_backend="gph"
			_build_hq_scalers=no
			_savegame_timestamp=no
			_vkeybd=yes
			_seq_midi=no
			_mt32emu=no
			_timidity=no
			_port_mk="backends/platform/gph/gp2x-bundle.mk"
			;;
		gp2xwiz)
			# This uses the GPH backend.
			DEFINES="$DEFINES -DGPH_DEVICE"
			DEFINES="$DEFINES -DGP2XWIZ"
			DEFINES="$DEFINES -DREDUCE_MEMORY_USAGE"
			if test "$_debug_build" = yes; then
				DEFINES="$DEFINES -DGPH_DEBUG"
			fi
			CXXFLAGS="$CXXFLAGS -mcpu=arm926ej-s"
			CXXFLAGS="$CXXFLAGS -mtune=arm926ej-s"
			ASFLAGS="$ASFLAGS -mfloat-abi=soft"
			_backend="gph"
			_build_hq_scalers=no
			_savegame_timestamp=no
			_vkeybd=yes
			_seq_midi=no
			_mt32emu=no
			_timidity=no
			_port_mk="backends/platform/gph/gp2xwiz-bundle.mk"
			;;
		iphone)
			DEFINES="$DEFINES -DIPHONE"
			_backend="iphone"
			_build_hq_scalers=no
			_seq_midi=no
			;;
		m68k-atari-mint)
			DEFINES="$DEFINES -DSYSTEM_NOT_SUPPORTING_D_TYPE"
			_ranlib=m68k-atari-mint-ranlib
			_ar="m68k-atari-mint-ar cru"
			_seq_midi=no
			;;
		maemo)
			_optimization_level=-Os
			CXXFLAGS="$CXXFLAGS -mcpu=arm926ej-s"
			CXXFLAGS="$CXXFLAGS -fomit-frame-pointer"
			INCLUDES="$INCLUDES -I/usr/X11R6/include"
			LIBS="$LIBS -lpthread"
			LIBS="$LIBS -L/usr/lib"
			
			_backend="maemo"
			_vkeybd=yes
			_build_hq_scalers=no
			_mt32emu=no
			_alsa=no
			_mad=yes
			_tremor=yes
			_zlib=yes
			;;
		*mingw32*)
			_sdlconfig=$_host-sdl-config
			_windres=$_host-windres
			_ar="$_host-ar cru"
			_ranlib=$_host-ranlib
			;;
		mips-sgi*)
			LDFLAGS="$LDFLAGS -static-libgcc"
			LIBS="$LIBS -laudio"
			;;
		motoezx)
			DEFINES="$DEFINES -DMOTOEZX"
			ASFLAGS="$ASFLAGS -mfpu=vfp"
			_backend="linuxmoto"
			_build_hq_scalers=no
			_mt32emu=no
			_vkeybd=yes
			_seq_midi=no
			_port_mk="backends/platform/linuxmoto/linuxmoto.mk"
			;;
		motomagx)
			DEFINES="$DEFINES -DMOTOMAGX"
			ASFLAGS="$ASFLAGS -mfpu=vfp"
			_backend="linuxmoto"
			_build_hq_scalers=no
			_mt32emu=no
			_vkeybd=yes
			_seq_midi=no
			_port_mk="backends/platform/linuxmoto/linuxmoto.mk"
			;;
		n64)
			CXXFLAGS="$CXXFLAGS -mno-extern-sdata"
			CXXFLAGS="$CXXFLAGS --param max-inline-insns-auto=20"
			CXXFLAGS="$CXXFLAGS -fomit-frame-pointer"
			CXXFLAGS="$CXXFLAGS -march=vr4300"
			CXXFLAGS="$CXXFLAGS -mtune=vr4300"
			CXXFLAGS="$CXXFLAGS -mhard-float"
			LDFLAGS="$LDFLAGS -march=vr4300"
			LDFLAGS="$LDFLAGS -mtune=vr4300"
			LDFLAGS="$LDFLAGS -nodefaultlibs"
			LDFLAGS="$LDFLAGS -nostartfiles"
			LDFLAGS="$LDFLAGS -mno-crt0"
			LDFLAGS="$LDFLAGS -L$N64SDK/hkz-libn64"
			LDFLAGS="$LDFLAGS -L$N64SDK/lib"
			LDFLAGS="$LDFLAGS -T n64ld_cpp.x -Xlinker -Map -Xlinker scummvm.map"
			_backend="n64"
			_mt32emu=no
			_build_scalers=no
			_savegame_timestamp=no
			_translation=no
			_keymapper=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)
			DEFINES="$DEFINES -DNEUROS"
			_backend='null'
			_build_hq_scalers=no
			_mt32emu=no
			;;
		openpandora)
			DEFINES="$DEFINES -DOPENPANDORA"
			DEFINES="$DEFINES -DREDUCE_MEMORY_USAGE"
			if test "$_release_build" = no; then
				DEFINES="$DEFINES -DOP_DEBUG"
			else
				# Use -O3 on the OpenPandora for non-debug builds.
				_optimization_level=-O3
			fi
			CXXFLAGS="$CXXFLAGS -march=armv7-a"
			CXXFLAGS="$CXXFLAGS -mtune=cortex-a8"
			CXXFLAGS="$CXXFLAGS -mfpu=neon"
			ASFLAGS="$ASFLAGS -mfloat-abi=soft"
			_backend="openpandora"
			_build_hq_scalers=yes
			_vkeybd=no
			_mt32emu=no
			_seq_midi=no
			_port_mk="backends/platform/openpandora/op-bundle.mk"
			;;
		ppc-amigaos)
			;;
		ps2)
			DEFINES="$DEFINES -DDISABLE_TEXT_CONSOLE"
			DEFINES="$DEFINES -DDISABLE_COMMAND_LINE"
			DEFINES="$DEFINES -DDISABLE_DOSBOX_OPL"
			DEFINES="$DEFINES -DDISABLE_SID"
			DEFINES="$DEFINES -DDISABLE_NES_APU"
			_backend="ps2"
			_build_scalers=no
			_mt32emu=no
			# HACK to enable mad & zlib (they are not properly detected due to linker issues).
			# This trick doesn't work for tremor right now, as the PS2 port the resulting library
			# libtremor, while our code later on expects it to be called libvorbisidec.
			# TODO: Enable tremor, e.g. by adding  -ltremor or by renaming the lib.
			_mad=yes
			_zlib=yes
			# HACK to fix compilation of C source files for now.
			add_line_to_config_mk 'CC = ee-gcc'
			# HACK to fix linking for now. It seems ee-g++ does not handle linking correctly.
			LD=ee-gcc

			if test "$_debug_build" = yes; then
				# TODO: Setup debug build properly
				DEFINES="$DEFINES -D__PS2_DEBUG__"
				#INCLUDES="$INCLUDES -I$(PS2GDB)/ee"
				#LDFLAGS="$LDFLAGS -L$(PS2GDB)/lib"
				LDFLAGS="$LDFLAGS -lps2gdbStub"
				LDFLAGS="$LDFLAGS -lps2ip"
				LDFLAGS="$LDFLAGS -ldebug"
			else
				# If not building for debug mode, strip binaries.
				CXXFLAGS="$CXXFLAGS -s"
			fi
			;;
		ps3)
			_mt32emu=no
			_timidity=no
			_vkeybd=yes
			;;
		psp)
			_backend="psp"
			_build_scalers=no
			_mt32emu=no
			_port_mk="backends/platform/psp/psp.mk"
			;;
		samsungtv)
			DEFINES="$DEFINES -DSAMSUNGTV"
			DEFINES="$DEFINES -DDISABLE_COMMAND_LINE"
			ASFLAGS="$ASFLAGS -mfpu=vfp"
			HOSTEXEEXT=".so"
			_backend="samsungtv"
			_mt32emu=no
			_vkeybd=yes
			;;
		webos)
			_backend="webos"
			_port_mk="backends/platform/webos/webos.mk"
			_build_scalers=yes
			_build_hq_scalers=no
			_timidity=no
			_mt32emu=no
			_seq_midi=no
			_vkeybd=no
			_keymapper=yes
			add_line_to_config_mk "HOST_COMPILER = `uname`"
			;;
		wii)
			_backend="wii"
			_build_scalers=no
			_vkeybd=yes
			_port_mk="backends/platform/wii/wii.mk"
			add_line_to_config_mk 'GAMECUBE = 0'
			add_line_to_config_h '#define AUDIO_REVERSE_STEREO'
			add_line_to_config_h "#define DEBUG_WII_USBGECKO"
			add_line_to_config_h "/* #define DEBUG_WII_MEMSTATS */"
			add_line_to_config_h "/* #define DEBUG_WII_GDB */"
			add_line_to_config_h "#define USE_WII_DI"
			add_line_to_config_h "#define USE_WII_SMB"
			add_line_to_config_h "#define USE_WII_KBD"
			;;
		wince)
			LDFLAGS="$LDFLAGS -Wl,--stack,65536"
			_tremolo=yes
			_backend="wince"
			_detectlang=yes
			_mt32emu=no
			_port_mk="backends/platform/wince/wince.mk"
			;;
		*)
			echo "WARNING: Unknown target, continuing with auto-detected values"
			;;
	esac
fi

#
# Backend related stuff
#
case $_backend in
	android)
		DEFINES="$DEFINES -DREDUCE_MEMORY_USAGE"
		CXXFLAGS="$CXXFLAGS -Wa,--noexecstack"
		LDFLAGS="$LDFLAGS -Wl,-z,noexecstack"
		;;
	bada)
		# dirent.h not available. NONSTANDARD_PORT==ensure portdefs.h is included
		DEFINES="$DEFINES -DBADA -DDISABLE_STDIO_FILESTREAM -DNONSTANDARD_PORT"
		DEFINES="$DEFINES -DNO_STDERR_STDOUT"
		DEFINES="$DEFINES -DDISABLE_COMMAND_LINE"
		INCLUDES="$INCLUDES "'-I$(srcdir)/backends/platform/bada '
		INCLUDES="$INCLUDES "'-I$(BADA_SDK)/include'
		INCLUDES="$INCLUDES "'-I$(BADA_SDK_ROOT)/Include'
		if test "$_debug_build" = yes; then
			# debug using with the simulator
			CXXFLAGS="$CXXFLAGS -D_DEBUG -DSHP -DBUILD_DLL -fmessage-length=0"
		else
			# created a shared library for inclusion via the eclipse build
			CXXFLAGS="$CXXFLAGS -DSHP"
			CXXFLAGS="$CXXFLAGS -fpic"
			CXXFLAGS="$CXXFLAGS -fshort-wchar"
			CXXFLAGS="$CXXFLAGS -mcpu=cortex-a8"
			CXXFLAGS="$CXXFLAGS -mfpu=vfpv3"
			CXXFLAGS="$CXXFLAGS -mfloat-abi=hard"
			CXXFLAGS="$CXXFLAGS -mlittle-endian"
			CXXFLAGS="$CXXFLAGS -mthumb-interwork"
			CXXFLAGS="$CXXFLAGS -Wno-psabi"
			CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
			CXXFLAGS="$CXXFLAGS -fno-short-enums"
		fi
		HOSTEXEPRE=lib
		HOSTEXEEXT=.a
		;;
	dc)
		INCLUDES="$INCLUDES "'-I$(srcdir)/backends/platform/dc'
		INCLUDES="$INCLUDES "'-isystem $(ronindir)/include'
		LDFLAGS="$LDFLAGS -Wl,-Ttext,0x8c010000"
		LDFLAGS="$LDFLAGS -nostartfiles"
		LDFLAGS="$LDFLAGS "'$(ronindir)/lib/crt0.o'
		LDFLAGS="$LDFLAGS "'-L$(ronindir)/lib'
		if test "$_release_build" = yes; then
			LIBS="$LIBS -lronin-noserial -lm"
		else
			LIBS="$LIBS -lronin -lm"
		fi
		;;
	dingux)
		DEFINES="$DEFINES -DDINGUX"
		;;
	ds)
		INCLUDES="$INCLUDES "'-I$(srcdir)/backends/platform/ds/arm9/source'
		INCLUDES="$INCLUDES "'-I$(srcdir)/backends/platform/ds/commoninclude'
		INCLUDES="$INCLUDES "'-Ibackends/platform/ds/arm9/data'
		;;
	gp2x)
		;;
	gph)
		;;
	iphone)
		OBJCFLAGS="$OBJCFLAGS --std=c99"
		LIBS="$LIBS -lobjc -framework UIKit -framework CoreGraphics -framework OpenGLES"
		LIBS="$LIBS -framework QuartzCore -framework GraphicsServices -framework CoreFoundation"
		LIBS="$LIBS -framework Foundation -framework AudioToolbox -framework CoreAudio"
		;;
	linuxmoto)
		DEFINES="$DEFINES -DLINUXMOTO"
		;;
	maemo)
		DEFINES="$DEFINES -DMAEMO"
		;;
	n64)
		INCLUDES="$INCLUDES "'-I$(N64SDK)/include'
		INCLUDES="$INCLUDES "'-I$(N64SDK)/mips64/include'
		INCLUDES="$INCLUDES "'-I$(N64SDK)/hkz-libn64'
		INCLUDES="$INCLUDES "'-I$(srcdir)/backends/platform/n64'
		LIBS="$LIBS -lpakfs -lframfs -ln64 -ln64utils -lromfs"
		LIBS="$LIBS -lm -lstdc++ -lz"
		;;
	null)
		DEFINES="$DEFINES -DUSE_NULL_DRIVER"
		;;
	openpandora)
		;;
	ps2)
		DEFINES="$DEFINES -D_EE"
		DEFINES="$DEFINES -DFORCE_RTL"
		INCLUDES="$INCLUDES -I$PS2SDK/ee/include"
		INCLUDES="$INCLUDES -I$PS2SDK/common/include"
		INCLUDES="$INCLUDES -I$PS2SDK/ports/include"
		if test "$_dynamic_modules" = no ; then
			LDFLAGS="$LDFLAGS -mno-crt0"
			LDFLAGS="$LDFLAGS $PS2SDK/ee/startup/crt0.o"
			LDFLAGS="$LDFLAGS -T $PS2SDK/ee/startup/linkfile"
		fi
		LDFLAGS="$LDFLAGS -L$PS2SDK/ee/lib"
		LDFLAGS="$LDFLAGS -L$PS2SDK/ports/lib"
		LIBS="$LIBS -lmc -lpad -lmouse -lhdd -lpoweroff -lsjpcm"
		LIBS="$LIBS -lm -lc -lfileXio -lkernel -lstdc++"
		;;
	psp)
		DEFINES="$DEFINES -D__PSP__"
		DEFINES="$DEFINES -DDISABLE_COMMAND_LINE"
		DEFINES="$DEFINES -DDISABLE_DOSBOX_OPL"
		LIBS="$LIBS -lpng"
		LIBS="$LIBS -Wl,-Map,mapfile.txt"
		;;
	samsungtv)
		DEFINES="$DEFINES -DSAMSUNGTV"
		LDFLAGS="$LDFLAGS -shared"
		LDFLAGS="$LDFLAGS -fpic"
		;;
	webos)
		# There is no sdl-config in the WebOS PDK so we don't use find_sdlconfig here.
		# The PDL library acts as the WebOS device toolchain, and is required to control the virtual keyboard among other OS-level events.
		LIBS="$LIBS -lSDL -lpdl"
		DEFINES="$DEFINES -DWEBOS"
		DEFINES="$DEFINES -DSDL_BACKEND"
		add_line_to_config_mk "SDL_BACKEND = 1"
		MODULES="$MODULES backends/platform/sdl"
		;;
	wii)
		DEFINES="$DEFINES -D__WII__"
		DEFINES="$DEFINES -DGEKKO"
		case $_host_os in
		gamecube)
			LIBS="$LIBS -lgxflux -liso9660 -lfat -logc -ldb"
			;;
		*)
			LIBS="$LIBS -lgxflux -ldi -liso9660 -ltinysmb -lfat -lwiiuse -lbte -logc -lwiikeyboard -ldb"
			;;
		esac
		;;
	wince)
		INCLUDES="$INCLUDES "'-I$(srcdir)/backends/platform/wince'
		INCLUDES="$INCLUDES "'-I$(srcdir)/backends/platform/wince/CEgui'
		INCLUDES="$INCLUDES "'-I$(srcdir)/backends/platform/wince/CEkeys'
		LIBS="$LIBS -static -lSDL"
		DEFINES="$DEFINES -DSDL_BACKEND"
		add_line_to_config_mk "SDL_BACKEND = 1"
		;;
	sdl)
		;;
	*)
		echo "support for $_backend backend not implemented in configure script yet"
		exit 1
		;;
esac
MODULES="$MODULES backends/platform/$_backend"

#
# Setup SDL specifics for SDL based backends
#
case $_backend in
	dingux | gp2x | gph | linuxmoto | maemo | openpandora | samsungtv | sdl)
		find_sdlconfig
		INCLUDES="$INCLUDES `$_sdlconfig --prefix="$_sdlpath" --cflags`"
		LIBS="$LIBS `$_sdlconfig --prefix="$_sdlpath" --libs`"
		DEFINES="$DEFINES -DSDL_BACKEND"
		add_line_to_config_mk "SDL_BACKEND = 1"

		_sdlversion=`$_sdlconfig --version`
		case $_sdlversion in
			1.3.*)
				add_line_to_config_mk "USE_SDL13 = 1"
				;;
			*)
				;;
		esac
		;;
esac


#
# Enable 16bit support only for backends which support it
#
case $_backend in
	android | bada | dingux | dreamcast | gph | maemo | openpandora | psp | samsungtv | sdl | webos | wii)
		if test "$_16bit" = auto ; then
			_16bit=yes
		else
			_16bit=no
		fi
		;;
	*)
		_16bit=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* | cygwin* | dreamcast | ds | gamecube | mingw* | n64 | ps2 | ps3 | psp | wii | wince)
		_posix=no
		;;
	android | beos* | bsd* | darwin* | freebsd* | gph-linux | haiku* | hpux* | iphone | irix* | linux* | maemo | mint* | netbsd* | openbsd* | solaris* | sunos* | uclinux* | webos)
		_posix=yes
		;;
	os2-emx*)
		_posix=yes	# FIXME: Really???
		;;
	*)
		# 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 "$_posix" = yes ; then
	DEFINES="$DEFINES -DPOSIX"
	add_line_to_config_mk 'POSIX = 1'
fi

#
# 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 "$_optimizations" = yes ; then
	# Enable optimizations. This also
	# makes it possible to use -Wuninitialized, so let's do that.
	CXXFLAGS="$CXXFLAGS $_optimization_level"
	CXXFLAGS="$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 $_host_os in
	android)
		_plugin_prefix="lib"
		_plugin_suffix=".so"
		CXXFLAGS="$CXXFLAGS -fpic"
		LIBS="$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  += $(LDFLAGS) -L. -lscummvm
PRE_OBJS_FLAGS  := -Wl,-export-dynamic -Wl,-whole-archive
POST_OBJS_FLAGS := -Wl,-no-whole-archive
'
		;;
	darwin*)
		_plugin_prefix=""
		_plugin_suffix=".plugin"
		LIBS="$LIBS -ldl"
_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"
_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
		DEFINES="$DEFINES -DELF_LOADER_CXA_ATEXIT"
		DEFINES="$DEFINES -DUNCACHED_PLUGINS"
		DEFINES="$DEFINES -DELF_NO_MEM_MANAGER"
_mak_plugins='
PLUGIN_LDFLAGS		+= -Wl,-T$(srcdir)/backends/plugins/ds/plugin.ld -mthumb-interwork -mno-fpu
'
		;;
	freebsd*)
		_plugin_prefix="lib"
		_plugin_suffix=".so"
		CXXFLAGS="$CXXFLAGS -fpic"
_mak_plugins='
PLUGIN_EXTRA_DEPS =
PLUGIN_LDFLAGS  += -shared
PRE_OBJS_FLAGS  := -Wl,-export-dynamic -Wl,-whole-archive
POST_OBJS_FLAGS := -Wl,-no-whole-archive
'
		;;
	gamecube | wii)
		_elf_loader=yes
		DEFINES="$DEFINES -DELF_LOADER_CXA_ATEXIT"
		DEFINES="$DEFINES -DUNCACHED_PLUGINS"
_mak_plugins='
PLUGIN_LDFLAGS		+= -Wl,-T$(srcdir)/backends/plugins/wii/plugin.ld
'
		;;
	gph*)
		_plugin_prefix=""
		_plugin_suffix=".plugin"
		CXXFLAGS="$CXXFLAGS -fpic"
		LIBS="$LIBS -ldl"
_mak_plugins='
PLUGIN_EXTRA_DEPS = $(EXECUTABLE)
PLUGIN_LDFLAGS  += -shared
PRE_OBJS_FLAGS  := -Wl,-export-dynamic -Wl,-whole-archive
POST_OBJS_FLAGS := -Wl,-no-whole-archive
'
		;;
	irix*)
		_plugin_prefix="lib"
		_plugin_suffix=".so"
		CXXFLAGS="$CXXFLAGS -fpic"
		LIBS="$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
'
		;;

	linux*)
		_plugin_prefix="lib"
		_plugin_suffix=".so"
		CXXFLAGS="$CXXFLAGS -fpic"
		LIBS="$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
'
		;;
	*mingw32*)
		_plugin_prefix=""
		_plugin_suffix=".dll"
_mak_plugins='
PLUGIN_EXTRA_DEPS	= $(EXECUTABLE)
PLUGIN_LDFLAGS		:= -Wl,--enable-auto-import -shared ./libscummvm.a
PRE_OBJS_FLAGS		:= -Wl,--whole-archive
POST_OBJS_FLAGS		:= -Wl,--export-all-symbols -Wl,--no-whole-archive -Wl,--out-implib,./libscummvm.a
'
		;;
	wince)
		DEFINES="$DEFINES -DUNCACHED_PLUGINS"
		HOSTEXEEXT=".dll"
		_plugin_prefix=""
		_plugin_suffix=".plugin"
_mak_plugins='
PLUGIN_EXTRA_DEPS	= $(EXECUTABLE)
PLUGIN_LDFLAGS		:= -shared -lscummvm -L.
PRE_OBJS_FLAGS		:= -Wl,--whole-archive
POST_OBJS_FLAGS		:= -Wl,--export-all-symbols -Wl,--no-whole-archive -Wl,--out-implib,./libscummvm.a -shared
'
		;;
	ps2)
		_elf_loader=yes
_mak_plugins='
LDFLAGS				+= -mno-crt0 $(PS2SDK)/ee/startup/crt0.o -Wl,-T$(srcdir)/backends/plugins/ps2/main_prog.ld
PLUGIN_LDFLAGS		+= -mno-crt0 $(PS2SDK)/ee/startup/crt0.o -Wl,-T$(srcdir)/backends/plugins/ps2/plugin.ld -lstdc++ -lc
'
		;;
	psp)
		_elf_loader=yes
		DEFINES="$DEFINES -DUNCACHED_PLUGINS"
_mak_plugins='
LDFLAGS				+= -Wl,-T$(srcdir)/backends/plugins/psp/main_prog.ld
PLUGIN_LDFLAGS		+= -Wl,-T$(srcdir)/backends/plugins/psp/plugin.ld -lstdc++ -lc
'
		;;
	webos)
		_plugin_prefix="lib"
		_plugin_suffix=".so"
		CXXFLAGS="$CXXFLAGS -fpic"
		LIBS="$LIBS -ldl"
_mak_plugins='
PLUGIN_EXTRA_DEPS =
PLUGIN_LDFLAGS  += -shared $(LDFLAGS)
PRE_OBJS_FLAGS  := -Wl,-export-dynamic -Wl,-whole-archive
POST_OBJS_FLAGS := -Wl,-no-whole-archive
'
		;;
	*)
		_dynamic_modules=no
		_mak_plugins=
		;;
	esac
	echo "$_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	= $(EXECUTABLE)
PLUGIN_LDFLAGS		= -nostartfiles backends/plugins/elf/version.o -Wl,-q,--just-symbols,$(EXECUTABLE),--retain-symbols-file,$(srcdir)/backends/plugins/elf/plugin.syms
PRE_OBJS_FLAGS		:= -Wl,--whole-archive
POST_OBJS_FLAGS		:= -Wl,--no-whole-archive
'"$_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


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

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

#
# 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) scalers
#
if test "$_build_scalers" = no ; then
	_build_hq_scalers=no
fi
define_in_config_if_yes "$_build_scalers" 'USE_SCALERS'

define_in_config_if_yes "$_build_hq_scalers" 'USE_HQ_SCALERS'

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

#
# Check for Ogg Vorbis
#
echocheck "Ogg 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
	cc_check $OGG_CFLAGS $OGG_LIBS $VORBIS_CFLAGS $VORBIS_LIBS \
		-lvorbisfile -lvorbis -logg && _vorbis=yes
fi
if test "$_vorbis" = yes ; then
	LIBS="$LIBS $OGG_LIBS $VORBIS_LIBS -lvorbisfile -lvorbis -logg"
	INCLUDES="$INCLUDES $OGG_CFLAGS $VORBIS_CFLAGS"
fi
define_in_config_if_yes "$_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
	cc_check $TREMOR_CFLAGS $TREMOR_LIBS -lvorbisidec && \
	_tremor=yes
fi
if test "$_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'
		LIBS="$LIBS $TREMOR_LIBS -ltremolo"
	else
		LIBS="$LIBS $TREMOR_LIBS -lvorbisidec"
	fi
	INCLUDES="$INCLUDES $TREMOR_CFLAGS"
else
	if test "$_vorbis" = yes; then
		_tremor="no (Ogg 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 FLAC
#
echocheck "FLAC >= 1.0.1"
if test "$_flac" = auto ; then
	_flac=no
	cat > $TMPC << EOF
#include <FLAC/format.h>
int main(void) { return FLAC__STREAM_SYNC_LEN >> 30; /* guaranteed to be 0 */ }
EOF
	if test "$_vorbis" = 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
	if test "$_vorbis" = yes ; then
		LIBS="$LIBS $FLAC_LIBS $OGG_LIBS -lFLAC -logg"
	else
		LIBS="$LIBS $FLAC_LIBS -lFLAC"
	fi
	INCLUDES="$INCLUDES $FLAC_CFLAGS"
fi
define_in_config_if_yes "$_flac" 'USE_FLAC'
echo "$_flac"

#
# 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
	LIBS="$LIBS $MAD_LIBS -lmad"
	INCLUDES="$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
	LIBS="$LIBS $ALSA_LIBS -lasound"
	INCLUDES="$INCLUDES $ALSA_CFLAGS"
fi
define_in_config_h_if_yes "$_alsa" 'USE_ALSA'
echo "$_alsa"

#
# Check for PNG
#
echocheck "PNG >= 1.2.8"
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 $PNG_LIBS -lpng && _png=yes
fi
if test "$_png" = yes ; then
	LIBS="$LIBS $PNG_LIBS -lpng"
	INCLUDES="$INCLUDES $PNG_CFLAGS"
fi
define_in_config_if_yes "$_png" 'USE_PNG'
echo "$_png"

#
# Check for Theora Decoder
#
echocheck "libtheoradec >= 1.0"
if test "$_vorbis" = no ; then
	echo "skipping. no vorbis"
	_theoradec=notsupported
fi
if test "$_theoradec" = auto ; then
	_theoradec=no
	cat > $TMPC << EOF
#include <theora/theoradec.h>
#include <vorbis/codec.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
	LIBS="$LIBS $THEORADEC_LIBS -ltheoradec"
	INCLUDES="$INCLUDES $THEORADEC_CFLAGS"
fi
define_in_config_if_yes "$_theoradec" 'USE_THEORADEC'
if test ! "$_theoradec" = notsupported ; then
	echo "$_theoradec"
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
	LIBS="$LIBS $FAAD_LIBS -lfaad"
	INCLUDES="$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 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
	LIBS="$LIBS $ZLIB_LIBS -lz"
	INCLUDES="$INCLUDES $ZLIB_CFLAGS"
fi
define_in_config_if_yes "$_zlib" 'USE_ZLIB'
echo "$_zlib"

if test `get_engine_build sword25` = yes && test ! "$_zlib" = yes ; then
	echo "...disabling Broken Sword 2.5 engine. ZLib is required"
	engine_disable sword25
fi

#
# Check for Sparkle if updates support is enabled
#
echocheck "Sparkle"
if test "$_updates" = no; then
	_sparkle=no
else
if test "$_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
	LIBS="$LIBS $SPARKLE_LIBS -framework Sparkle"
	INCLUDES="$INCLUDES $SPARKLE_CFLAGS"
fi
define_in_config_if_yes "$_sparkle" 'USE_SPARKLE'
fi
echo "$_sparkle"

#
# Check for libfluidsynth
#
echocheck "libfluidsynth"
if test "$_fluidsynth" = auto ; then
	_fluidsynth=no
	cat > $TMPC << EOF
#include <fluidsynth.h>
int main(void) { return 0; }
EOF
	cc_check $FLUIDSYNTH_CFLAGS $FLUIDSYNTH_LIBS -lfluidsynth && _fluidsynth=yes
fi
if test "$_fluidsynth" = yes ; then
	case $_host_os in
		mingw*)
			LIBS="$LIBS $FLUIDSYNTH_LIBS -lfluidsynth -ldsound -lwinmm"
		;;
		*)
			LIBS="$LIBS $FLUIDSYNTH_LIBS -lfluidsynth"
		;;
	esac
	INCLUDES="$INCLUDES $FLUIDSYNTH_CFLAGS"
fi
define_in_config_h_if_yes "$_fluidsynth" 'USE_FLUIDSYNTH'
echo "$_fluidsynth"

#
# 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) {
	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 "$_readline" = yes ; then
	LIBS="$LIBS $READLINE_LIBS $_READLINE_LIBS"
	INCLUDES="$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; then
	_libunity=no
else
if test "$_libunity" = auto ; then
	case $_host_os in
		mingw*)
			# pkgconfig and unity are not supported on mingw
			_libunity=no
			;;
		*)
			# Unity has a lots of dependencies, update the libs and cflags var with them
			LIBUNITY_LIBS="$LIBUNITY_LIBS $(pkg-config --libs unity = 3.8.4 2>> "$TMPLOG")"
			LIBUNITY_CFLAGS="$LIBUNITY_CFLAGS $(pkg-config --cflags unity = 3.8.4 2>> "$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
	LIBS="$LIBS $LIBUNITY_LIBS"
	INCLUDES="$INCLUDES $LIBUNITY_CFLAGS"
fi
define_in_config_h_if_yes "$_libunity" 'USE_TASKBAR_UNITY'
fi
echo "$_libunity"

#
# Check for OpenGL (ES)
#
echocheck "OpenGL"
if test "$_opengl" = auto ; then
	_opengl=no
	if test "$_backend" = "sdl" ; 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 Mac OS X
		# 3) GLES/gl.h       This is used for OpenGL ES 1.x
		for i in "GL/gl.h" "OpenGL/gl.h" "GLES/gl.h"; do
			# Test the current header for OpenGL
			cat > $TMPC << EOF
#include <$i>
int main(void) { return GL_VERSION_1_1; }
EOF
			cc_check $DEFINES $OPENGL_CFLAGS $OPENGL_LIBS && _opengl=yes && break

			# Test the current header for OpenGL ES
			cat > $TMPC << EOF
#include <$i>
int main(void) { return GL_OES_VERSION_1_1; }
EOF
			cc_check $DEFINES $OPENGL_CFLAGS $OPENGL_LIBS && _opengl=yes && _opengles=yes && break
		done
	fi
fi
if test "$_opengl" = yes ; then
	# Our simple test case
	cat > $TMPC << EOF
int main(void) { return 0; }
EOF

	_opengl=no
	# Try different library names
	if test "$_opengles" = "yes" ; then
		# 1) GLES_CM    This is usually used for OpenGL ES 1.1 (Common profile)
		# 2) GLESv1_CM  This is used by the Windows Mali OpenGL ES 1.1 Emulator
		# 3) glesv1     This is used by the Linux Mali OpenGL ES 1.1 Emulator
		_opengles=no
		for lib in "-lGLES_CM" "-lGLESv1_CM" "-lglesv1"; do
			if cc_check_no_clean $DEFINES $OPENGL_CFLAGS $OPENGL_LIBS $lib
				then
				_opengl=yes
				_opengles=yes
				OPENGL_LIBS="$OPENGL_LIBS $lib"
				break
			fi
		done
	else
		# 1) -framework OpenGL  This is used on Mac OS X
		# 2) GL                 This is usually used on POSIX systems
		# 3) opengl32           This is used on Windows
		#
		# We try "-framework OpenGL" first here to assure it will always be
		# picked up by the configure script on Mac OS X, even when a libGL
		# exists.
		for lib in "-framework OpenGL" "-lGL" "-lopengl32"; do
			if cc_check_no_clean $DEFINES $OPENGL_CFLAGS $OPENGL_LIBS $lib
				then
				_opengl=yes
				OPENGL_LIBS="$OPENGL_LIBS $lib"
				break
			fi
		done
	fi
	cc_check_clean

	if test "$_opengl" = yes ; then
		LIBS="$LIBS $OPENGL_LIBS"
		INCLUDES="$INCLUDES $OPENGL_CFLAGS"
	fi
fi

case $_host_os in
	bada)
		# components live in non-standard locations so just assume sane SDK
		_opengl=yes
		_opengles=yes
		;;
esac

if test "$_opengles" = "yes" ; then
	echo "yes (OpenGL ES)"
else
	echo "$_opengl"
fi

define_in_config_if_yes "$_opengl" "USE_OPENGL"
define_in_config_if_yes "$_opengles" "USE_GLES"


#
# 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 $_host_os in
				darwin*)
					NASMFLAGS="$NASMFLAGS -f macho"
				;;
				mingw*)
					NASMFLAGS="$NASMFLAGS -f win32"
				;;
				os2-emx*)
					NASMFLAGS="$NASMFLAGS -f aout"
				;;
				*)
					NASMFLAGS="$NASMFLAGS -f elf"
				;;
			esac
			_nasm=yes
		fi
	fi
fi

define_in_config_if_yes $_nasm 'USE_NASM'

#
# Enable vkeybd / keymapper
#
define_in_config_if_yes $_vkeybd 'ENABLE_VKEYBD'
define_in_config_if_yes $_keymapper 'ENABLE_KEYMAPPER'

# 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 $LDFLAGS $CXXFLAGS && _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... "
define_in_config_if_yes $_taskbar 'USE_TASKBAR'
if test "$_taskbar" = yes; then
	case $_host_os in
	mingw*)
		LIBS="$LIBS -lole32 -luuid"
		echo "win32"
		;;
	*)
		if test "$_libunity" = yes; then
			echo "unity"
		else
			echo "$_taskbar"
		fi
		;;
	esac
else
	echo "$_taskbar"
fi

#
# 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... "
define_in_config_if_yes $_updates 'USE_UPDATES'
if test "$_updates" = yes; then
	if test "$_sparkle" = yes; then
		echo "Sparkle"
	else
		echo "$_updates"
	fi
else
	echo "$_updates"
fi

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

DEFINES="$DEFINES -DDATA_PATH=\\\"$datadir\\\""

case $_backend in
	openpandora)
		# Add ../plugins as a path so plugins can be found when running from a .PND.
		DEFINES="$DEFINES -DPLUGIN_DIRECTORY=\\\"../plugins\\\""
		;;
	maemo | webos)
		# The WebOS and Maemo apps want the plugins in the "lib" directory
		# without a scummvm sub directory.
		DEFINES="$DEFINES -DPLUGIN_DIRECTORY=\\\"$libdir\\\""
		;;
	*)
		DEFINES="$DEFINES -DPLUGIN_DIRECTORY=\\\"$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 "$_enable_prof" = yes ; then
	CXXFLAGS="$CXXFLAGS -pg"
	LDFLAGS="$LDFLAGS -pg"
	DEFINES="$DEFINES -DENABLE_PROFILING"
fi

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

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

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

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

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

if test "$_text_console" = yes ; then
	echo_n ", text console"
fi

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

if test "$_keymapper" = yes ; then
	echo ", keymapper"
else
	echo
fi

#
# Some last-minute backend specific stuff, executed
# after all of CXXFLAGS, LDFLAGS, LIBS etc. have been setup
#
case $_backend in
	android)
		# ssp at this point so the cxxtests link
		if test "$_debug_build" = yes; then
			CXXFLAGS="$CXXFLAGS -fstack-protector"
		else
			CXXFLAGS="$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 unhygenic from the Android libs.
		LIBS="-Wl,-Bstatic $static_libs -Wl,-Bdynamic -lgcc $system_libs -llog -lGLESv1_CM"
		;;
	n64)
		# Move some libs down here, otherwise some symbols requires by libvorbis aren't found
		# during linking stage
		LIBS="$LIBS -lc -lgcc -lnosys"
		;;
esac


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

# Show a message if looping over engines takes longer than 5 secs
sh -c "
	touch config.gnomes
	sleep 5
	if test -f config.gnomes; then
		printf 'Employing little gnomes...'
		rm -f config.gnomes
	fi" 2>/dev/null &

for engine in $_engines; do
	if test "`get_engine_sub $engine`" = "no" ; then
		# It's a main engine
		if test `get_engine_build $engine` = no ; then
			isbuilt=no
		else
			# If dynamic plugins aren't supported, mark
			# all the engines as static
			if test $_dynamic_modules = no ; then
				set_var _engine_${engine}_build "static"
			else
				# If it wasn't explicitly marked as static or
				# dynamic, use the configured default
				if test `get_engine_build $engine` = yes ; then
					set_var _engine_${engine}_build "${_plugins_default}"
				fi
			fi

			# Prepare the defines
			if test `get_engine_build $engine` = dynamic ; then
				isbuilt=DYNAMIC_PLUGIN
			else
				set_var _engine_${engine}_build "static"
				isbuilt=STATIC_PLUGIN
			fi
		fi

		# Prepare the information to be shown
		prepare_engine_build_strings $engine
	else
		# It's a subengine, just say yes or no
		if test "`get_engine_build $engine`" = "no" ; then
			isbuilt=no
		else
			isbuilt=1
		fi
	fi

	# Save the settings
	defname="ENABLE_`echo $engine | tr '[a-z]' '[A-Z]'`"
	if test "$isbuilt" = "no" ; then
		add_line_to_config_mk "# $defname"
	else
		add_line_to_config_mk "$defname = $isbuilt"
	fi
done

#
# Detection of WIP/unstable engines
#
for engine in $_engines; do
	engine_build=`get_engine_build $engine`
	engine_build_default=`get_engine_build_default $engine`
	if test $engine_build != no -a $engine_build_default = no ; then
		set_var _tainted_build "yes"
	fi
done

add_to_config_h_if_yes `get_var _tainted_build` '#define TAINTED_BUILD'

# Complete the message on slow systems
if test -f config.gnomes ; then
	# Kill does not work well here as it produces nasty 'Killed' message
	rm -rf config.gnomes
else
	echo " work is done"
fi

#
# Show which engines ("frontends") are to be built
#
echo
if test -n "$_engines_built_static" ; then
	echo "Engines (builtin):"
	echo $_engines_built_static | sed 's/@/\
/g
s/#/    /g'
fi

if test -n "$_engines_built_dynamic" ; then
	echo "Engines (plugins):"
	echo $_engines_built_dynamic | sed 's/@/\
/g
s/#/    /g'
fi

if test -n "$_engines_skipped" ; then
	echo "Engines Skipped:"
	echo $_engines_skipped | sed 's/@/\
/g
s/#/    /g'
fi

if test -n "$_engines_built_wip" ; then
	echo "WARNING: This ScummVM build contains the following UNSTABLE engines:"
	echo $_engines_built_wip | sed 's/@/\
/g
s/#/    /g'
fi

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

#ifndef CONFIG_H
#define CONFIG_H

$_config_h_data

/* Data 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 signed $type_1_byte int8;
typedef signed $type_2_byte int16;
typedef signed $type_4_byte int32;

#endif /* CONFIG_H */
EOF

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

CXX := $CXX
CXXFLAGS := $CXXFLAGS
LD := $LD
LIBS += $LIBS
RANLIB := $_ranlib
STRIP := $_strip
AR := $_ar
AS := $_as
ASFLAGS := $ASFLAGS
WINDRES := $_windres
WINDRESFLAGS := $WINDRESFLAGS
STAGINGPATH=$_stagingpath
WIN32PATH=$_win32path
AOS4PATH=$_aos4path
STATICLIBPATH=$_staticlibpath

BACKEND := $_backend
MODULES += $MODULES
MODULE_DIRS += $MODULE_DIRS
EXEPRE := $HOSTEXEPRE
EXEEXT := $HOSTEXEEXT
NASM := $NASM
NASMFLAGS := $NASMFLAGS

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

$_config_mk_data

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

$_mak_plugins

port_mk = $_port_mk

SAVED_CONFIGFLAGS  := $SAVED_CONFIGFLAGS
SAVED_LDFLAGS      := $SAVED_LDFLAGS
SAVED_CXX          := $SAVED_CXX
SAVED_CXXFLAGS     := $SAVED_CXXFLAGS
SAVED_CPPFLAGS     := $SAVED_CPPFLAGS
SAVED_ASFLAGS      := $SAVED_ASFLAGS
SAVED_WINDRESFLAGS := $SAVED_WINDRESFLAGS
EOF

#
# 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 << 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)
include \$(srcdir)/Makefile
EOF

fi