gecko-dev/configure.in

dnl -*- Mode: Autoconf; tab-width: 4; indent-tabs-mode: nil; -*-
dnl The contents of this file are subject to the Mozilla Public
dnl License Version 1.1 (the "License"); you may not use this file
dnl except in compliance with the License. You may obtain a copy of
dnl the License at http://www.mozilla.org/MPL/
dnl
dnl Software distributed under the License is distributed on an "AS
dnl IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
dnl implied. See the License for the specific language governing
dnl rights and limitations under the License.
dnl
dnl The Original Code is this file as it was released upon August 6, 1998.
dnl
dnl The Initial Developer of the Original Code is Christopher
dnl Seawood. Portions created by Christopher Seawood are
dnl Copyright (C) 1998-2001 Christopher Seawood. All Rights Reserved.
dnl
dnl Contributor(s): Jamie Zawinski <jwz@jwz.org>
dnl                 gettimeofday args check
dnl               Christopher Blizzard <blizzard@appliedtheory.com>
dnl                 gnomefe update & enable-pthreads
dnl               Ramiro Estrugo <ramiro@netscape.com>
dnl                 X11 makedepend support
dnl                 Insure support.
dnl               Henry Sobotka <sobotka@axess.com>
dnl                 OS/2 support
dnl               Dan Mosedale <dmose@mozilla.org>
dnl                 LDAP support
dnl               Seth Spitzer <sspitzer@netscape.com>
dnl                 xpctools support
dnl
dnl Process this file with autoconf to produce a configure script.
dnl ========================================================

AC_PREREQ(2.12)
AC_INIT(config/config.mk)
AC_CONFIG_AUX_DIR(${srcdir}/build/autoconf)
AC_CANONICAL_SYSTEM
AC_PREFIX_DEFAULT(`pwd`/dist)
TARGET_CPU="${target_cpu}"
TARGET_OS="${target_os}"

dnl ========================================================
dnl =
dnl = Dont change the following two lines.  Doing so breaks:
dnl =
dnl = CFLAGS="-foo" ./configure
dnl =
dnl ========================================================
CFLAGS="${CFLAGS=}"
CPPFLAGS="${CPPFLAGS=}"
CXXFLAGS="${CXXFLAGS=}"
LDFLAGS="${LDFLAGS=}"
HOST_CFLAGS="${HOST_CFLAGS=}"
HOST_CXXFLAGS="${HOST_CXXFLAGS=}"
HOST_LDFLAGS="${HOST_LDFLAGS=}"

dnl ========================================================
dnl = Preserve certain environment flags passed to configure
dnl = We want sub projects to receive the same flags
dnl = untainted by this configure script
dnl ========================================================
_SUBDIR_CC="$CC"
_SUBDIR_CXX="$CXX"
_SUBDIR_CFLAGS="$CFLAGS"
_SUBDIR_CPPFLAGS="$CPPFLAGS"
_SUBDIR_CXXFLAGS="$CFLAGS"
_SUBDIR_LDFLAGS="$LDFLAGS"
_SUBDIR_HOST_CC="$HOST_CC"
_SUBDIR_HOST_CFLAGS="$HOST_CFLAGS"
_SUBDIR_HOST_CXXFLAGS="$HOST_CXXFLAGS"
_SUBDIR_HOST_LDFLAGS="$HOST_LDFLAGS"
_SUBDIR_CONFIG_ARGS="$ac_configure_args"

dnl Set the version number of the libs included with mozilla
dnl ========================================================
MOZJPEG=62
MOZPNG=10009
MOZMNG="((1<<16)|(0<<8)|(1))"
NSPR_VERSION=4

dnl Set the minimum version of toolkit libs used by mozilla
dnl ========================================================
GLIB_VERSION=1.2.0
GTK_VERSION=1.2.0
GDK_PIXBUF_VERSION=0.8.0
LIBIDL_VERSION=0.6.3
PERL_VERSION=5.004
QT_VERSION=2.2.0
QT_VERSION_NUM=220

dnl Set various checks
dnl ========================================================
MISSING_FULLCIRCLE=
MISSING_MOTIF=
MISSING_NSPR=
MISSING_X=

dnl Initialize the Pthread test variables early so they can be
dnl  overridden by each platform.
dnl ========================================================
USE_PTHREADS=
_PTHREAD_LDFLAGS=""

dnl Do not allow a separate objdir build if a srcdir build exists.
dnl ==============================================================
_topsrcdir=`cd \`dirname $0\`; pwd`
_objdir=`pwd`
if test "$_topsrcdir" != "$_objdir"
then
  # Check for a couple representative files in the source tree
  _conflict_files=
  for file in $_topsrcdir/Makefile $_topsrcdir/config/autoconf.mk; do
    if test -f $file; then
      _conflict_files="$_conflict_files $file"
    fi
  done
  if test "$_conflict_files"; then
    echo "***"
    echo "*   Your source tree contains these files:"
    for file in $_conflict_files; do
      echo "*         $file"
    done
    cat 1>&2 <<-EOF
	*   This indicates that you previously built in the source tree.
	*   A source tree build can confuse the separate objdir build.
	*
	*   To clean up the source tree:
	*     1. cd $_topsrcdir
	*     2. gmake distclean
	***
	EOF
    exit 1
    break
  fi
fi
MOZ_BUILD_ROOT=`pwd`

dnl ========================================================
dnl Checks for compilers.
dnl ========================================================
dnl Set CROSS_COMPILE in the environment when running configure
dnl to use the cross-compile setup for now
dnl ========================================================
if test -n "$CROSS_COMPILE" && test "$target" != "$host"; then
    echo "cross compiling from $host to $target"
    cross_compiling=yes

    _SAVE_CC="$CC"
    _SAVE_CFLAGS="$CFLAGS"
    _SAVE_LDFLAGS="$LDFLAGS"

    AC_MSG_CHECKING([for host c compiler])
    if test -z "$HOST_CC"; then
	AC_CHECK_PROGS(HOST_CC, gcc cc /usr/ucb/cc icc, "")
	if test -z "$HOST_CC"; then
	    AC_MSG_ERROR([no acceptable c compiler found in \$PATH])
	fi
    fi
    AC_MSG_RESULT([$HOST_CC])
    AC_MSG_CHECKING([for host c++ compiler])
    if test -z "$HOST_CXX"; then
	AC_CHECK_PROGS(HOST_CXX, $CCC c++ g++ gcc CC cxx cc++ cl icc, "")
	if test -z "$HOST_CXX"; then
	    AC_MSG_ERROR([no acceptable c++ compiler found in \$PATH])
	fi
    fi
    AC_MSG_RESULT([$HOST_CXX])

    if test -z "$HOST_CFLAGS"; then
	HOST_CFLAGS="$CFLAGS"
    fi
    if test -z "$HOST_CXXFLAGS"; then
	HOST_CXXFLAGS="$CXXFLAGS"
    fi
    if test -z "$HOST_LDFLAGS"; then
	HOST_LDFLAGS="$LDFLAGS"
    fi
    if test -z "$HOST_RANLIB"; then
	AC_CHECK_PROG(HOST_RANLIB, ranlib, ranlib, :)
    fi
    if test -z "$HOST_AR"; then
	AC_CHECK_PROG(HOST_AR, ar, ar, :)
    fi
    CC="$HOST_CC"
    CFLAGS="$HOST_CFLAGS"
    LDFLAGS="$HOST_LDFLAGS"

    AC_MSG_CHECKING([whether the host c compiler ($HOST_CC $HOST_CFLAGS $HOST_LDFLAGS) works])
    AC_TRY_COMPILE([], [return(0);], 
	[ac_cv_prog_hostcc_works=1 AC_MSG_RESULT([yes])],
	AC_MSG_ERROR([installation or configuration problem: host compiler $HOST_CC cannot create executables.]) )

    CC="$HOST_CXX"
    CFLAGS="$HOST_CXXFLAGS"

    AC_MSG_CHECKING([whether the host c++ compiler ($HOST_CXX $HOST_CXXFLAGS $HOST_LDFLAGS) works])
    AC_TRY_COMPILE([], [return(0);], 
	[ac_cv_prog_hostcxx_works=1 AC_MSG_RESULT([yes])],
	AC_MSG_ERROR([installation or configuration problem: host compiler $HOST_CXX cannot create executables.]) )
    
    CC=$_SAVE_CC
    CFLAGS=$_SAVE_CFLAGS
    LDFLAGS=$_SAVE_LDFLAGS

    if test -z "$CC"; then
	AC_CHECK_PROGS(CC, "${target_alias}-gcc" "${target}-gcc", :)
    fi
    unset ac_cv_prog_CC
    AC_PROG_CC
    if test -z "$CXX"; then
	AC_CHECK_PROGS(CXX, "${target_alias}-g++" "${target}-g++", :)
    fi
    unset ac_cv_prog_CXX
    AC_PROG_CXX
    if test -z "$RANLIB"; then
	AC_CHECK_PROGS(RANLIB, "${target_alias}-ranlib" "${target}-ranlib", :)
    fi
    if test -z "$AR"; then
	AC_CHECK_PROGS(AR, "${target_alias}-ar" "${target}-ar", :)
    fi
    if test -z "$AS"; then
	AC_CHECK_PROGS(AS, "${target_alias}-as" "${target}-as", :)
    fi
    if test -z "$LD"; then
	AC_CHECK_PROGS(LD, "${target_alias}-ld" "${target}-ld", :)
    fi
    if test -z "$STRIP"; then
	AC_CHECK_PROGS(STRIP, "${target_alias}-strip" "${target}-strip", :)
    fi
    if test -z "$DLLTOOL"; then
	AC_CHECK_PROGS(DLLTOOL, "${target_alias}-dlltool" "${target}-dlltool", :)
    fi
    if test -z "$WINDRES"; then
	AC_CHECK_PROGS(WINDRES, "${target_alias}-windres" "${target}-windres", :)
    fi
    AC_DEFINE(CROSS_COMPILE)
else
    AC_PROG_CC
    AC_PROG_CXX
    AC_PROG_RANLIB
    AC_PATH_PROGS(AS, as, $CC)
    AC_PATH_PROGS(AR, ar, :)
    AC_PATH_PROGS(LD, ld, :)
    AC_PATH_PROGS(STRIP, strip, :)
    AC_PATH_PROGS(DLLTOOL, dlltool, :)
    if test -z "$HOST_CC"; then
	HOST_CC="$CC"
    fi
    if test -z "$HOST_CFLAGS"; then
	HOST_CFLAGS="$CFLAGS"
    fi
    if test -z "$HOST_CXX"; then
	HOST_CXX="$CXX"
    fi
    if test -z "$HOST_CXXFLAGS"; then
	HOST_CXXFLAGS="$CXXFLAGS"
    fi
    if test -z "$HOST_LDFLAGS"; then
	HOST_LDFLAGS="$LDFLAGS"
    fi
    if test -z "$HOST_RANLIB"; then
	HOST_RANLIB="$RANLIB"
    fi
    if test -z "$HOST_AR"; then
	HOST_AR="$AR"
    fi
fi

dnl Breaks icc on OS/2
if test "$CC" != "icc"; then
    AC_PROG_CC_C_O
    if grep "NO_MINUS_C_MINUS_O 1" ./confdefs.h >/dev/null; then
        USING_HCC=1
        _OLDCC=$CC
        _OLDCXX=$CXX
        CC="${srcdir}/build/hcc '$CC'"
        CXX="${srcdir}/build/hcpp '$CXX'"
    fi
fi

GNU_AS=
GNU_CC=
GNU_CXX=
if test "$GCC" = "yes"; then
    GNU_CC=1
fi
if test "$GXX" = "yes"; then
    GNU_CXX=1
fi
if test "`echo | $AS -V 2>&1 | grep -c GNU`" != "0"; then
    GNU_AS=1
fi
rm -f a.out

AC_SUBST(GNU_AS)
AC_SUBST(GNU_CC)
AC_SUBST(GNU_CXX)

dnl ========================================================
dnl Check for gcc -pipe support
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(gcc-pipe,
    [  --disable-gcc-pipe      Disable -pipe check for gcc],
    NO_GCC_PIPE=1)

AC_MSG_CHECKING([for gcc -pipe support])

if test -n "$NO_GCC_PIPE"; then
    AC_MSG_RESULT([disabled])
elif test -n "$GNU_CC" && test -n "$GNU_CXX" && test -n "$GNU_AS"; then
    echo '#include <stdio.h>' > dummy-hello.c
    echo 'int main() { printf("Hello World\n"); exit(0); }' >> dummy-hello.c
    ${CC} -S dummy-hello.c -o dummy-hello.s 2>&5
    cat dummy-hello.s | ${AS} -o dummy-hello.S - 2>&5
    if test $? = 0; then
        _res_as_stdin="yes"
    else
        _res_as_stdin="no"
    fi
    if test "$_res_as_stdin" = "yes"; then
        _SAVE_CFLAGS=$CFLAGS
        CFLAGS="$CFLAGS -pipe"
        AC_TRY_COMPILE( [ #include <stdio.h> ],
            [printf("Hello World\n");],
            [_res_gcc_pipe="yes"],
            [_res_gcc_pipe="no"] )
        CFLAGS=$_SAVE_CFLAGS
    fi
    if test "$_res_as_stdin" = "yes" && test "$_res_gcc_pipe" = "yes"; then
        _res="yes";
        CFLAGS="$CFLAGS -pipe"
        CXXFLAGS="$CXXFLAGS -pipe"
    else
        _res="no"
    fi
    rm -f dummy-hello.c dummy-hello.s dummy-hello.S dummy-hello a.out
    AC_MSG_RESULT([$_res])
else
    AC_MSG_RESULT([no])
fi

dnl ========================================================
dnl Checks for programs.
dnl ========================================================
AC_PROG_CPP
AC_PROG_CXXCPP
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_AWK
AC_PATH_PROGS(EMACS, xemacs lemacs emacs, :)
AC_PATH_PROGS(PERL, $PERL perl5 perl )
if test -z "$PERL" || test "$PERL" = ":"; then
    AC_MSG_ERROR([perl not found in \$PATH])
fi

AC_MSG_CHECKING([for minimum required perl version >= $PERL_VERSION])
_perl_version=`PERL_VERSION=$PERL_VERSION $PERL -e 'print "$]"; if ($] >= $ENV{PERL_VERSION}) { exit(0); } else { exit(1); }' 2>&5`
_perl_res=$?
AC_MSG_RESULT([$_perl_version])

if test "$_perl_res" != 0; then
    AC_MSG_ERROR([Perl $PERL_VERSION or higher is required.])
fi

AC_MSG_CHECKING([for full perl installation])
_perl_archlib=`$PERL -e 'use Config; if ( -d $Config{archlib} ) { exit(0); } else { exit(1); }' 2>&5`
_perl_res=$?
if test "$_perl_res" != 0; then
    AC_MSG_RESULT([no])
    AC_MSG_ERROR([Cannot find Config.pm or \$Config{archlib}.  A full perl installation is required.])
else
    AC_MSG_RESULT([yes])    
fi

AC_PATH_PROG(WHOAMI, whoami, :)
AC_PATH_PROG(AUTOCONF, autoconf, :)
AC_PATH_PROG(UNZIP, unzip, :)
AC_PATH_PROGS(ZIP, zip)
if test -z "$ZIP" || test "$ZIP" = ":"; then
    AC_MSG_WARN([zip not found in \$PATH. Disabling jar packaging])
    MOZ_DISABLE_JAR_PACKAGING=1
fi
AC_PATH_PROG(SYSTEM_MAKEDEPEND, makedepend)
AC_PATH_PROG(XARGS, xargs)
dnl if test -z "$XARGS" || test "$XARGS" = ":"; then
dnl     AC_MSG_ERROR([xargs not found in \$PATH .])
dnl fi

dnl Be sure the make we use is GNU make.
AC_PATH_PROGS(MAKE, gmake make, :)
_make_try=`$MAKE --version 2>/dev/null`
if test ! "$_make_try"
then
	echo
	echo "*** $MAKE is not GNU Make.  You will not be able to build Mozilla without GNU Make."
	echo
	exit 1
fi
dnl Now warn about version 3.77 if we find it.
_make_vers=`$MAKE --version | grep Make | $AWK '{ print \$4 }' | sed 's/,//'`
if test "$_make_vers" = "3.77"
then
	echo
	echo "*** Found GNU Make 3.77.  This version is known to have problems with the"
	echo "*** wildcard function in certain circumstances.  You may experience infinite"
	echo "*** looping while building Mozilla with 3.77.  If this happens, you can"
	echo "*** either downgrade to 3.76.1 or try configuring with --disable-md."
	echo
fi

AC_PROG_MAKE_SET

AC_PATH_XTRA

dnl Check in X11 include directory too.
if test "$no_x" != "yes"; then
    CPPFLAGS="$CPPFLAGS $X_CFLAGS"
fi

dnl ========================================================
dnl set the defaults first
dnl ========================================================
AR_FLAGS='cr $@'
AR_LIST='$(AR) t'
AR_EXTRACT='$(AR) x'
AR_DELETE='$(AR) d'
AS='$(CC)'
AS_DASH_C_FLAG='-c'
DLL_SUFFIX=.so
OBJ_SUFFIX=o
LIB_SUFFIX=a
TARGET_MD_ARCH=unix
DIRENT_INO=d_ino

MOZ_JPEG_CFLAGS=
MOZ_JPEG_LIBS='-L$(DIST)/lib -lmozjpeg'
MOZ_ZLIB_CFLAGS=
MOZ_ZLIB_LIBS='-L$(DIST)/lib -lmozz'
MOZ_PNG_CFLAGS=
MOZ_PNG_LIBS='-L$(DIST)/lib -lmozpng'
MOZ_MNG_CFLAGS=
MOZ_MNG_LIBS='-L$(DIST)/lib -lmozmng'

MOZ_JS_LIBS='-L$(DIST)/bin -lmozjs'
XPCOM_LIBS='-L$(DIST)/bin -lxpcom'

MOZ_COMPONENT_NSPR_LIBS='-L$(DIST)/bin $(NSPR_LIBS)'
MOZ_COMPONENT_XPCOM_LIBS='-L$(DIST)/bin -lxpcom'

if test -n "$CROSS_COMPILE"; then
    OS_TARGET="${target_os}"
    OS_ARCH=`echo $target_os | sed -e 's|/|_|g'`
    OS_RELEASE=
    OS_TEST="${target_cpu}"
    case "${target_os}" in
        linux*)       OS_ARCH=Linux ;;
        solaris*)     OS_ARCH=SunOS OS_RELEASE=5 ;;
        openvms*)     OS_TARGET=`uname -s`
                      OS_ARCH=`uname -s | sed -e 's|/|_|g'`
                      OS_RELEASE=`uname -r`
                      OS_TEST=`uname -Wh`;;
    esac
else
    OS_TARGET=`uname -s`
    OS_ARCH=`uname -s | sed -e 's|/|_|g'`
    OS_RELEASE=`uname -r`
    OS_TEST=`uname -m`
fi
_COMPILER_PREFIX=

dnl ========================================================
dnl GNU specific defaults
dnl ========================================================
if test "$GNU_CC"; then
    MKSHLIB='$(CXX) $(CXXFLAGS) $(DSO_LDOPTS) -o $@'
    MKCSHLIB='$(CC) $(CFLAGS) $(DSO_LDOPTS) -o $@'
    DSO_LDOPTS='-shared -Wl,-h -Wl,$@'
    DSO_CFLAGS=''
    DSO_PIC_CFLAGS='-fPIC'

    # Turn on GNU specific features
    # -Wall - turn on all warnings
    # -pedantic - make compiler warn about non-ANSI stuff, and
    #             be a little bit stricter
    # Warnings slamm took out for now (these were giving more noise than help):
    # -Wbad-function-cast - warns when casting a function to a new return type
    # -Wconversion - complained when char's or short's were used a function args
    # -Wshadow - removed because it generates more noise than help --pete
    _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Wall -W -Wno-unused -Wpointer-arith -Wcast-align"

    dnl Turn pedantic on but disable the warnings for long long
    _PEDANTIC=1
    _IGNORE_LONG_LONG_WARNINGS=1

    _DEFINES_CFLAGS='-include $(DEPTH)/config-defs.h -DMOZILLA_CLIENT'
    _USE_CPP_INCLUDE_FLAG=1
else
    MKSHLIB='$(LD) $(DSO_LDOPTS) -o $@'
    MKCSHLIB='$(LD) $(DSO_LDOPTS) -o $@'
    DSO_LDOPTS='-shared -h $@'
    DSO_CFLAGS=''
    DSO_PIC_CFLAGS='-KPIC'
    _DEFINES_CFLAGS='$(ACDEFINES) -DMOZILLA_CLIENT'
fi

if test "$GNU_CXX"; then
    # Turn on GNU specific features
    _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Wall -Wconversion -Wpointer-arith -Wbad-function-cast -Wcast-align -Woverloaded-virtual -Wsynth"

	dnl The following warning breaks Qt
	if test ! "$QTDIR"; then
    	_WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS}"
	fi

    _DEFINES_CXXFLAGS='-DMOZILLA_CLIENT -include $(DEPTH)/config-defs.h'
    _USE_CPP_INCLUDE_FLAG=1
else
    _DEFINES_CXXFLAGS='-DMOZILLA_CLIENT $(ACDEFINES)'
fi

dnl gcc can come with its own linker so it is better to use the pass-thru calls
dnl MKSHLIB_FORCE_ALL is used to force the linker to include all object
dnl files present in an archive. MKSHLIB_UNFORCE_ALL reverts the linker to
dnl normal behavior.
dnl ========================================================
MKSHLIB_FORCE_ALL=
MKSHLIB_UNFORCE_ALL=
if test "$GNU_CC"; then
  AC_MSG_CHECKING(whether ld has archive extraction flags)
  AC_CACHE_VAL(ac_cv_mkshlib_force_and_unforce,
   [_SAVE_LDFLAGS=$LDFLAGS; _SAVE_LIBS=$LIBS
    ac_cv_mkshlib_force_and_unforce="no"
    exec 3<&0 <<LOOP_INPUT
	force="-Wl,--whole-archive";   unforce="-Wl,--no-whole-archive"
	force="-Wl,-z -Wl,allextract"; unforce="-Wl,-z -Wl,defaultextract"
	force="-Wl,-all";              unforce="-Wl,-none"
LOOP_INPUT
    while read line
    do
      eval $line
      LDFLAGS=$force
      LIBS=$unforce
      AC_TRY_LINK(,, ac_cv_mkshlib_force_and_unforce=$line; break)
    done
    exec 0<&3 3<&-
    LDFLAGS=$_SAVE_LDFLAGS; LIBS=$_SAVE_LIBS
   ])
  if test "$ac_cv_mkshlib_force_and_unforce" = "no"; then
    AC_MSG_RESULT(no)
  else
    AC_MSG_RESULT(yes)
    eval $ac_cv_mkshlib_force_and_unforce
    MKSHLIB_FORCE_ALL=$force
    MKSHLIB_UNFORCE_ALL=$unforce
  fi
fi

dnl ========================================================
dnl System overrides of the defaults for host
dnl ========================================================
case "$host" in
*-linux*)
    HOST_NSPR_MDCPUCFG='\"md/_linux.cfg\"'
    ;;

*-osf*)
    HOST_NSPR_MDCPUCFG='\"md/_osf1.cfg\"'
    ;;

esac

dnl =======================================================
dnl Check to see if we are using an old version of the Compaq C compiler.
dnl =======================================================
dnl Even after installing this compiler, this test still fails.
dnl AC_LANG_SAVE
dnl AC_LANG_CPLUSPLUS
dnl AC_MSG_CHECKING(for old DEC C++ compiler)
dnl AC_TRY_COMPILE([], [
dnl #if defined(__DECCXX) && (__DECCXX_VER<60190029)
dnl #error "Compiler is too old."
dnl #endif ],
dnl [AC_MSG_RESULT([no])],
dnl AC_MSG_ERROR([Compiler is too old.  Get a new one: http://www.unix.digital.com/dtk/]) )
dnl AC_LANG_RESTORE

dnl ========================================================
dnl Check for an old version of SUNWspro
dnl ========================================================
case "$target" in
*-solaris*)
	if test ! "$GNU_CC" && test ! -z "`${CC} -V 2>&1 | head -1 | grep '4.2'`"; then
		AC_MSG_ERROR([SUNWspro4.2 is too old.  Use a newer version or gcc.])
	fi
    ;;
esac

dnl ========================================================
dnl System overrides of the defaults for target
dnl ========================================================
case "$target" in
*-aix*)
    if test ! "$GNU_CC"; then
	    # DSO_LDOPTS='-ldl -bM:SRE -p1 -brtl -bso -bexpall -bnoentry'
	    DSO_LDOPTS='-ldl -p1 -brtl -bso -bsymbolic -bnortllib'
	    DSO_CFLAGS='-qflag=w:w'
	    DSO_PIC_CFLAGS='-DPIC'
    fi
    case "${target_os}" in
    aix4.1*)
        DLL_SUFFIX='_shr.a'
        ;;
    esac
    MKSHLIB='$(AIX_SHLIB_BIN) $(DSO_LDOPTS) -o $@'
    MKCSHLIB='$(AIX_SHLIB_BIN) $(DSO_LDOPTS) -o $@'
    AC_DEFINE(NSCAP_DISABLE_DEBUG_PTR_TYPES)
    ;;

*-beos*)
    MKSHLIB='$(CXX) $(CXXFLAGS) $(DSO_LDOPTS) -o $@'
    DSO_LDOPTS='-nostart -Wl,-h -Wl,$@'
    TK_LIBS='-lbe -lroot'
    LIBS="$LIBS -lbe"
    AC_CHECK_LIB(bind,main,LIBS="$LIBS -lbind")
    _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Wno-multichar"
    _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Wno-multichar -Wno-ctor-dtor-privacy"
    ;;

*-bsdi*)
    dnl -pedantic doesn't play well with BSDI's _very_ modified gcc (shlicc2)
    _PEDANTIC=
    _IGNORE_LONG_LONG_WARNINGS=
    case $OS_RELEASE in
	4.*)
            STRIP="$STRIP -d"
            ;;
	*)
	    DSO_CFLAGS=''
	    DSO_LDOPTS='-r'
	    _WARNINGS_CFLAGS="-Wall"
	    _WARNINGS_CXXFLAGS="-Wall"
	    # The test above doesn't work properly, at least on 3.1.
	    MKSHLIB_FORCE_ALL=''
	    MKSHLIB_UNFORCE_ALL=''
	;;
    esac
    ;;

*-freebsd*)
    if test `test -x /usr/bin/objformat && /usr/bin/objformat || echo aout` != "elf"; then
	DLL_SUFFIX=".so.1.0"
	DSO_LDOPTS="-shared"
    fi
    if test ! "$GNU_CC"; then
	DSO_LDOPTS="-Bshareable $DSO_LDOPTS"
    fi
# Can't have force w/o an unforce.
#    # Hack for FreeBSD 2.2
#    if test -z "$MKSHLIB_FORCE_ALL"; then
#	MKSHLIB_FORCE_ALL='-Wl,-Bforcearchive'
#	MKSHLIB_UNFORCE_ALL=''
#    fi
    ;; 

*-hpux*)
    DLL_SUFFIX=".sl"
    if test ! "$GNU_CC"; then
    	DSO_LDOPTS='-b -Wl,+s -L$(DIST)/bin'
    	DSO_CFLAGS=""
    	DSO_PIC_CFLAGS="+Z"
    	MKSHLIB='$(CXX) $(CXXFLAGS) $(DSO_LDOPTS) -o $@'
    	MKCSHLIB='$(CC) $(CFLAGS) $(DSO_LDOPTS) -o $@'
    else
    	DSO_LDOPTS='-b -E +s -L$(DIST)/bin -L$(DIST)/lib'
    	MKSHLIB='$(LD) $(DSO_LDOPTS) -o $@'
    	MKCSHLIB='$(LD) $(DSO_LDOPTS) -o $@'
    fi
    MOZ_POST_PROGRAM_COMMAND='chatr +s enable'
    AC_DEFINE(NSCAP_DISABLE_DEBUG_PTR_TYPES)
    ;;

*-irix5*)
    AC_DEFINE(IRIX)
    DSO_LDOPTS='-elf -shared'
    if test "$GNU_CC"; then
       MKSHLIB_FORCE_ALL='-Wl,-all'
       MKSHLIB_UNFORCE_ALL='-Wl,-none'
       CXXFLAGS="$CXXFLAGS -D_LANGUAGE_C_PLUS_PLUS"
    else
       MKSHLIB_FORCE_ALL='-all'
       MKSHLIB_UNFORCE_ALL='-none'
    fi
    ;;

*-irix6*)
    AC_DEFINE(IRIX)
    dnl the irix specific xptcinvoke code is written against the n32 ABI so we *must* 
    dnl compile and link using -n32
    USE_N32=1
    DSO_LDOPTS='-elf -shared'
    MKSHLIB='$(CCC) $(CXXFLAGS) $(DSO_LDOPTS) -o $@'
    MKCSHLIB='$(CC) $(CFLAGS) $(DSO_LDOPTS) -o $@'
    if test "$GNU_CC"; then
       MKSHLIB_FORCE_ALL='-Wl,-all'
       MKSHLIB_UNFORCE_ALL='-Wl,-none'
       _WARNINGS_CFLAGS="-Wall"
       _WARNINGS_CXXFLAGS="-Wall"
       CXXFLAGS="$CXXFLAGS -D_LANGUAGE_C_PLUS_PLUS"
    else
       MKSHLIB_FORCE_ALL='-all'
       MKSHLIB_UNFORCE_ALL='-none'
	   AR_LIST="$AR t"
	   AR_EXTRACT="$AR x"
	   AR_DELETE="$AR d"
	   AR='$(CXX) -ar'
	   AR_FLAGS='-o $@'
       CFLAGS="$CFLAGS -woff 3262"
       CXXFLAGS="$CXXFLAGS -woff 3262"
       if test -n "$USE_N32"; then
	   ASFLAGS="$ASFLAGS -n32"
	   CFLAGS="$CFLAGS -n32"
	   CXXFLAGS="$CXXFLAGS -n32"
	   LDFLAGS="$LDFLAGS -n32"
       fi
       AC_DEFINE(NSCAP_DISABLE_DEBUG_PTR_TYPES)
    fi
    if test -z "$GNU_CXX"; then
      MIPSPRO_CXX=1
    fi
    ;;

*-*linux*)
    AC_DEFINE(_POSIX_SOURCE)
    AC_DEFINE(_SVID_SOURCE)
    TARGET_NSPR_MDCPUCFG='\"md/_linux.cfg\"'
    LIBS="$LIBS -lc"

    case "${host_cpu}" in
    alpha*)
    	CFLAGS="$CFLAGS -mieee"
    	CXXFLAGS="$CXXFLAGS -mieee"
    ;;
    i?86)
    	USE_ELF_DYNSTR_GC=1
    ;;
    esac
    ;;

*-mingw*)
    AC_DEFINE(_WINDOWS)
    AC_DEFINE(WIN32_LEAN_AND_MEAN)
    AC_DEFINE(NONAMELESSUNION)
    CFLAGS="$(CFLAGS) -fvtable-thunks"
    CXXFLAGS="$(CXXFLAGS) -fvtable-thunks"
    TARGET_MD_ARCH=win32
    if test -z "$GNU_CC"; then
	OBJ_SUFFIX=obj
	LIB_SUFFIX=lib
	DLL_SUFFIX=.dll
    fi
    MKSHLIB='$(DLLTOOL) --as=$(AS) -k --dllname $(LIBRARY_NAME).dll --output-lib $@'
    MKCSHLIB='$(DLLTOOL) --as=$(AS) -k --dllname $(LIBRARY_NAME).dll --output-lib $@'
    MKSHLIB_FORCE_ALL=
    MKSHLIB_UNFORCE_ALL=
    DSO_LDOPTS=
    DSO_CFLAGS=
    DSO_PIC_CFLAGS=
    OS_TARGET=WINNT
    dnl Hardcode to win95 for now - cls
    TARGET_NSPR_MDCPUCFG='\"md/_win95.cfg\"'
    
    case "$target" in
    i?86-*)
	AC_DEFINE(_X86_)
	;;
    alpha-*)
	AC_DEFINE(_ALPHA_)
	;;
    mips-*)
	AC_DEFINE(_MIPS_)
	;;
    *)
	AC_DEFINE(_CPU_ARCH_NOT_DEFINED)
	;;
    esac
    ;;

*-netbsd*)
    DSO_CFLAGS=''
    CFLAGS="$CFLAGS -Dunix"
    CXXFLAGS="$CXXFLAGS -Dunix"
    if $CC -E - -dM </dev/null | grep __ELF__ >/dev/null; then
        DLL_SUFFIX=".so"
        DSO_PIC_CFLAGS='-fPIC -DPIC'
        DSO_LDOPTS='-shared -Wl,-soname,lib$(LIBRARY_NAME)$(DLL_SUFFIX)'
	BIN_FLAGS='-Wl,--export-dynamic'
    else
    	DSO_PIC_CFLAGS='-fPIC -DPIC'
    	DLL_SUFFIX=".so.1.0"
    	DSO_LDOPTS='-shared'
    fi
    # This will fail on a.out systems prior to 1.5.1_ALPHA.
    MKSHLIB_FORCE_ALL='-Wl,--whole-archive'
    MKSHLIB_UNFORCE_ALL='-Wl,--no-whole-archive'
    if test "$LIBRUNPATH"; then
	DSO_LDOPTS="-Wl,-R$LIBRUNPATH $DSO_LDOPTS"
    fi
    ;;

*-nto*) 
    CFLAGS="$CFLAGS -DNTO -D_QNX_SOURCE -D_POSIX_C_SOURCE=199506 -D_i386"
    CXXFLAGS="$CXXFLAGS -DNTO -D_QNX_SOURCE -D_POSIX_C_SOURCE=199506 -D_i386"
    _WARNINGS_CFLAGS='-w'
    _WARNINGS_CXXFLAGS='-w'
    OS_TARGET="NTO"
    MOZ_OPTIMIZE_FLAGS="-O1"
	MOZ_DEBUG_FLAGS="-gstabs"
    DSO_LDOPTS="-M $DSO_LDOPTS"
    DSO_CFLAGS=''
    DSO_PIC_CFLAGS="-shared -Wc,-fPIC -DPIC"
    MKSHLIB='qcc -Vgcc_ntox86 $(DSO_LDOPTS) -o $@'
    MKCSHLIB='qcc -Vgcc_ntox86 $(DSO_LDOPTS) -o $@'
    AR='qcc -Vgcc_ntox86'
    AR_FLAGS='-M -a $@'
    AR_LIST='ar t'
    AR_EXTRACT='ar x'
    AR_DELETE='ar d'
    _DEFINES_CFLAGS='-Wp,-include,$(DEPTH)/config-defs.h -DMOZILLA_CLIENT'
    _DEFINES_CXXFLAGS='-Wp,-include,$(DEPTH)/config-defs.h -DMOZILLA_CLIENT'
    _PREPROCESSOR_PREFIX="-Wp,"
    _COMPILER_PREFIX="-Wc,"
    _LINKER_PREFIX="-Wl,"      
	USE_PTHREADS=1
	_PTHREAD_LDFLAGS=""
	LIBS="$LIBS -L/usr/lib -lsocket -lm -lstdc++"
	HAVE_DEV_ZERO=1
    ;;

*-openbsd*)
    DLL_SUFFIX=".so.1.0"
    DSO_CFLAGS=''
    DSO_PIC_CFLAGS='-fPIC'
    DSO_LDOPTS='-shared -h $@'
    MKSHLIB='$(LD) $(DSO_LDOPTS) -o $@'
    MKCSHLIB='$(LD) $(DSO_LDOPTS) -o $@'
    if $CC -E - -dM </dev/null | grep -v __ELF__ >/dev/null; then
	DSO_LDOPTS="-Bshareable /usr/lib/c++rt0.o"
    fi
    if test "$LIBRUNPATH"; then
	DSO_LDOPTS="-R$LIBRUNPATH $DSO_LDOPTS"
    fi
    ;;

*-openvms*) 
    if test "$OS_TARGET" = "POSIX_for_OpenVMS_AXP"; then
	dnl Hack...
	_OPENVMS_CROSS_COMPILE=1
    fi
    MISSING_NSPR="yes"
    AC_DEFINE(NO_PW_GECOS)
    AC_DEFINE(NO_UDSOCK)
    USE_PTHREADS=1
    ;;


*-*-os2*)
    MOZ_BUILD_ROOT=`pwd -D`
    USE_SHORT_LIBNAME=1
    BIN_SUFFIX='.exe'
    OBJ_SUFFIX=obj
    LIB_SUFFIX=lib
    DLL_SUFFIX=.dll
    DLLTOOL=''
    LD='$(CC)'
    DSO_CFLAGS=''
    DSO_PIC_CFLAGS=''
    MOZ_JPEG_LIBS='$(DIST)/lib/mozjpeg.$(LIB_SUFFIX)'
    MOZ_ZLIB_LIBS='$(DIST)/lib/mozz.$(LIB_SUFFIX)'
    MOZ_PNG_LIBS='$(DIST)/lib/mozpng.$(LIB_SUFFIX)'
    MOZ_MNG_LIBS='$(DIST)/lib/mozmng.$(LIB_SUFFIX)'
    MOZ_JS_LIBS='$(DIST)/lib/mozjs.lib'
    OS_ARCH=OS2
    OS_TARGET=OS2

    case "$target" in
    *-*-os2_emx)
        _PEDANTIC=''
        AR=emxomfar
        AR_FLAGS='-p256 r $@'
        CFLAGS="-Zmtd -Zomf $CFLAGS"
        CXXFLAGS="-Zmtd -Zomf $CXXFLAGS"
        DSO_LDOPTS='-Zomf -Zdll -Zmt -Zcrtdll -Zlinker /NOO'
        BIN_FLAGS='-Zlinker /PM:VIO -Zlinker /ST:0x30000'
        IMPLIB='emximp -o'
        FILTER='emxexp'
        AC_DEFINE(OS2)
        AC_DEFINE(XP_OS2_EMX)
        AC_DEFINE(OS2EMX_PLAIN_CHAR)
        MOZ_COMPONENT_NSPR_LIBS='-L$(DIST)/lib $(NSPR_LIBS)'
        MOZ_COMPONENT_XPCOM_LIBS='-L$(DIST)/lib $(DIST)/lib/xpcom.lib'
        XPCOM_LIBS='-L$(DIST)/lib -lxpcom'
        ;;

    *-*-os2_vacpp)
#        MOZ_BUILD_ROOT="$ROOT"`pwd -D`
        AR=-ilib
        AR_FLAGS='/NOL /NOI /O:$(subst /,\\,$@)'
        AR_LIST='/L'
        AR_EXTRACT='-*'
        AR_DELETE='-'
        LD='-ilink'
        TARGET_MD_ARCH=os2
        CFLAGS="/Q /qlibansi /Gd /Gm /Su4 /Mp /Tl-"
        CXXFLAGS="/Q /qlibansi /Gd /Gm /Su4 /Mp /Tl-"
        LDFLAGS="/FREE /DE /NOE /LINENUMBERS /nologo"
        DSO_LDOPTS=''
        IMPLIB='implib /NOL /NOI'
        FILTER='cppfilt -q -B -P'
        AC_DEFINE(NO_ANSI_KEYWORDS)
        AC_DEFINE(OS2,4)
        AC_DEFINE(_X86_)
        AC_DEFINE(XP_OS2_VACPP)
        AC_DEFINE(TCPV40HDRS)
        AC_DEFINE(NSCAP_DISABLE_DEBUG_PTR_TYPES)
        AC_DEFINE(STDC_HEADERS)
        MOZ_COMPONENT_NSPR_LIBS='$(NSPR_LIBS)'
        MOZ_COMPONENT_XPCOM_LIBS='$(DIST)/lib/xpcom.lib'
        XPCOM_LIBS='$(DIST)/lib/xpcom.lib'
        MKSHLIB='$(LD) $(DSO_LDOPTS)'
        MKCSHLIB='$(LD) $(DSO_LDOPTS)'
        ;;
    esac
    ;;

alpha*-*-osf*)
    if test "$GNU_CC"; then
	DSO_LDOPTS='-shared -Wl,-soname -Wl,$@'
    else
	MOZ_DEBUG_FLAGS='-g3'
	ASFLAGS='-I$(topsrcdir)/xpcom/reflect/xptcall/public -g -std1'
	CFLAGS="$CFLAGS -std1 -ieee"
	CXXFLAGS="$CXXFLAGS "'-noexceptions -ieee  -ptr $(DIST)/cxx_repository'
	DSO_LDOPTS='-shared -msym -expect_unresolved \* -soname $@ -update_registry $(DIST)/so_locations'
	DSO_CFLAGS=
	DSO_PIC_CFLAGS=
	MKCSHLIB='$(CC) $(CFLAGS) $(DSO_LDOPTS) -o $@'
	MKSHLIB='$(CXX) $(CXXFLAGS) $(DSO_LDOPTS) -o $@'
	MKSHLIB_FORCE_ALL='-all'
	MKSHLIB_UNFORCE_ALL='-none'
	dnl Might fix the libxpcom.so breakage on this platform as well....
	AC_DEFINE(NSCAP_DISABLE_TEST_DONTQUERY_CASES)
	AC_DEFINE(NSCAP_DISABLE_DEBUG_PTR_TYPES)
    fi
    AC_DEFINE(NEED_USLEEP_PROTOTYPE)
    ;;

*-qnx*) 
    DIRENT_INO=d_stat.st_ino
    dnl Solves the problems the QNX compiler has with nsCOMPtr.h.
    AC_DEFINE(NSCAP_DISABLE_TEST_DONTQUERY_CASES)
    AC_DEFINE(NSCAP_DISABLE_DEBUG_PTR_TYPES)
    if test "$no_x" = "yes"; then
	MOZ_WIDGET_TOOLKIT='photon'
	TK_CFLAGS='-I/usr/nto/include/photon'
	TK_LIBS='-lphoton -lphrender'
	AC_DEFINE(NO_X11)
    fi
    ;;

*-rhapsody*) 
    DLL_SUFFIX=".dylib"
    DSO_LDOPTS='-compatibility_version 1 -current_version 1'
    AC_DEFINE(NO_X11)
    AC_DEFINE(DARWIN)
    AC_DEFINE(RHAPSODY)
    AC_DEFINE(TARGET_CARBON)
    AC_DEFINE(TARGET_API_MAC_CARBON)
    ENABLE_TESTS=
    MOZ_WIDGET_TOOLKIT='mac'
    TK_LIBS='/System/Library/Frameworks/Carbon.framework/Carbon'
    CFLAGS="$CFLAGS -traditional-cpp -fno-common -I/System/Library/Frameworks/Carbon.framework/Headers"
    CXXFLAGS="$CXXFLAGS -traditional-cpp -fno-common -I/System/Library/Frameworks/Carbon.framework/Headers"
    MKSHLIB='$(CXX) $(CXXFLAGS) -arch ppc $(DSO_LDOPTS) -o $@'
    MKCSHLIB='$(CC) $(CFLAGS) $(DSO_LDOPTS) -o $@'
    MKSHLIB_FORCE_ALL=''
    MKSHLIB_UNFORCE_ALL=''
    ;;

*-sco*) 
    AC_DEFINE(NSCAP_DISABLE_TEST_DONTQUERY_CASES)
    AC_DEFINE(NSCAP_DISABLE_DEBUG_PTR_TYPES)
    CXXFLAGS="$CXXFLAGS -I/usr/include/CC"
    if test ! "$GNU_CC"; then
       DSO_LDOPTS='-G -h $@'
    fi
    ;;

dnl the qsort routine under solaris is faulty
*-solaris*) 
    AC_DEFINE(BROKEN_QSORT)
    TARGET_NSPR_MDCPUCFG='\"md/_solaris32.cfg\"'
    SYSTEM_MAKEDEPEND=
    if test -z "$GNU_CC"; then
       NS_USE_NATIVE=1
       AC_DEFINE(NSCAP_DISABLE_DEBUG_PTR_TYPES)
       LDFLAGS='-xildoff'
       MKSHLIB='$(CXX) $(CXXFLAGS) $(DSO_LDOPTS) -o $@'
       MKCSHLIB='$(CC) $(CFLAGS) $(DSO_LDOPTS) -o $@'
       MKSHLIB_FORCE_ALL='-Qoption ld -z,allextract'
       MKSHLIB_UNFORCE_ALL=''
       DSO_LDOPTS='-G -Qoption ld -z,muldefs -h $@'
       AR_LIST="$AR t"
       AR_EXTRACT="$AR x"
       AR_DELETE="$AR d"
       AR='$(CXX) -xar'
       AR_FLAGS='-o $@'
       AS='/usr/ccs/bin/as'
       ASFLAGS="$ASFLAGS -K PIC -L -P -D_ASM -D__STDC__=0"
       AS_DASH_C_FLAG=''
    else
       ASFLAGS="$ASFLAGS -fPIC"
       MKSHLIB='$(CXX) $(CXXFLAGS) $(DSO_LDOPTS) -o $@'
       MKCSHLIB='$(CC) $(CFLAGS) $(DSO_LDOPTS) -o $@'
       DSO_LDOPTS='-G -h $@'
       _WARNINGS_CFLAGS=''
       _WARNINGS_CXXFLAGS=''
       if test "$OS_RELEASE" = "5.3"; then
	  AC_DEFINE(MUST_UNDEF_HAVE_BOOLEAN_AFTER_INCLUDES)
       fi
    fi
    if test "$OS_RELEASE" = "5.5.1"; then
       AC_DEFINE(NEED_USLEEP_PROTOTYPE)
    fi
    ;;

*-sunos*) 
    DSO_LDOPTS='-Bdynamic'
    MKSHLIB='-$(LD) $(DSO_LDOPTS) -o $@'
    MKCSHLIB='-$(LD) $(DSO_LDOPTS) -o $@'
    AC_DEFINE(SUNOS4)
    AC_DEFINE(SPRINTF_RETURNS_STRING)
    case "$(target_os)" in
    sunos4.1*)
        DLL_SUFFIX='.so.1.0'
        ;;
    esac
    ;;

*-sysv4.2uw7*) 
	NSPR_LIBS="-lnspr$NSPR_VERSION -lplc$NSPR_VERSION -lplds$NSPR_VERSION -L/usr/ccs/lib -lcrt"
    ;;

esac

dnl Only one oddball right now (QNX), but this gives us flexibility
dnl if any other platforms need to override this in the future.
AC_DEFINE_UNQUOTED(D_INO,$DIRENT_INO)

dnl ========================================================
dnl Any platform that doesn't have MKSHLIB_FORCE_ALL defined
dnl by now will not have any way to link most binaries (tests
dnl as well as viewer, apprunner, etc.), because some symbols
dnl will be left out of the "composite" .so's by ld as unneeded.
dnl So, by defining NO_LD_ARCHIVE_FLAGS for these platforms,
dnl they can link in the static libs that provide the missing
dnl symbols.
dnl ========================================================
NO_LD_ARCHIVE_FLAGS=
if test -z "$MKSHLIB_FORCE_ALL"; then
    NO_LD_ARCHIVE_FLAGS=1
fi
case "$target" in
*-*-os2_*)
    NO_LD_ARCHIVE_FLAGS=
    ;;
*-aix4.3*)
    NO_LD_ARCHIVE_FLAGS=
    ;;
*-openvms*)
    NO_LD_ARCHIVE_FLAGS=
    ;;
esac
AC_SUBST(NO_LD_ARCHIVE_FLAGS)

XLDFLAGS="$X_LIBS"
XLIBS="$X_EXTRA_LIBS"

dnl ========================================================
dnl Checks for X libraries.
dnl Ordering is important.
dnl Xt is dependent upon SM as of X11R6
dnl ========================================================
if test "$no_x" != "yes"
then
	XLIBS="-lX11 $XLIBS"
	_SAVE_LDFLAGS="$LDFLAGS"
	LDFLAGS="$XLDFLAGS $LDFLAGS"
	AC_CHECK_LIB(X11, XDrawLines, [X11_LIBS="-lX11"],
		[MISSING_X="$MISSING_X -lX11"], $XLIBS)
	AC_CHECK_LIB(Xext, XextAddDisplay, [XEXT_LIBS="-lXext"],
		[MISSING_X="$MISSING_X -lXext"], $XLIBS)
	AC_CHECK_LIB(ICE, IceFlush, [XICE_LIBS="-lICE"],, $XLIBS)
	AC_CHECK_LIB(SM, SmcCloseConnection, [XSM_LIBS="-lSM"],, $XLIBS)
	AC_CHECK_LIB(Xt, XtFree, [ XT_LIBS="-lXt"],
		[MISSING_X="$MISSING_X -lXt"], $X_PRE_LIBS $XLIBS)
	AC_CHECK_LIB(Xmu, XmuLookupString, [XMU_LIBS="-lXmu"],
		[MISSING_X="$MISSING_X -lXmu"], $X_PRE_LIBS $XLIBS $XT_LIBS $XEXT_LIBS)

    dnl ========================================================
    dnl =
    dnl = Check for Xinerama
    dnl =
    dnl ========================================================
    AC_CHECK_LIB(Xinerama, XineramaIsActive, [MOZ_XINERAMA_LIBS="-lXinerama"],,
        $XLIBS $XEXT_LIBS)
    AC_CHECK_HEADER(X11/extensions/Xinerama.h)

    dnl ========================================================
    dnl =
    dnl = Check for XIE
    dnl =
    dnl ========================================================
    AC_CHECK_LIB(XIE, XieFloGeometry, [MOZ_XIE_LIBS="-lXIE"],,
        $XLIBS $XEXT_LIBS)
    AC_CHECK_HEADER(X11/extensions/XIElib.h)

    if test "$MOZ_XIE_LIBS"; then
	dnl ====================================================
	dnl =
	dnl = If XIE is present and is desired, turn it on
	dnl =
	dnl ====================================================
	case $target in
	    *-hpux*)
		;;
	    *)
		HAVE_XIE=1
		;;
	esac
    fi

	LDFLAGS="$_SAVE_LDFLAGS"

	dnl ========================================================
	dnl =
	dnl = --enable-toolkit
	dnl = 
	dnl = Select the default x toolkit
	dnl = 
	dnl ========================================================
	AC_ARG_ENABLE(toolkit,
	[  --enable-toolkit=\$val   Enable \$val fe (defaults to gtk)],
	  [	if test "$enableval" = "motif" \
	        -o "$enableval" = "gtk" \
	        -o "$enableval" = "qt" \
	        -o "$enableval" = "xlib"
		then
		     dnl nglayout only supports building with one toolkit,
		     dnl so ignore everything after the first comma (",").
		     MOZ_WIDGET_TOOLKIT=`echo "$enableval" | sed -e "s/,.*$//"`
		else
		     AC_MSG_ERROR(Toolkit must be Xlib, GTK, Qt, or Motif.)
		fi], 

	  [	MOZ_WIDGET_TOOLKIT="gtk" ])
fi # $no_x

dnl ========================================================
dnl =
dnl = If NSPR was not detected in the system, 
dnl = use the one in the source tree (mozilla/nsprpub)
dnl =
dnl ========================================================

AM_PATH_NSPR(4.0.0, [MOZ_NATIVE_NSPR=1], [MOZ_NATIVE_NSPR=])

if test -z "$MOZ_NATIVE_NSPR"; then
    AC_MSG_WARN(nspr-config not found. building local copy of NSPR)
    NSPR_CFLAGS='`$(DEPTH)/nsprpub/config/nspr-config --prefix=$(DIST) --cflags`'
    case "$target" in
    *-*-os2_vacpp)
        NSPR_LIBS='$(DIST)/lib/nspr'$NSPR_VERSION'.lib $(DIST)/lib/plc'$NSPR_VERSION'.lib $(DIST)/lib/plds'$NSPR_VERSION'.lib '$_PTHREAD_LDFLAGS''
        ;;
    *)
        NSPR_LIBS='`$(DEPTH)/nsprpub/config/nspr-config --prefix=$(DIST) --libs`'
        ;;
    esac
fi

dnl ========================================================
dnl =
dnl = --enable-xinerama
dnl =
dnl = This turns on xinerama support.  We just can't use the
dnl = autodetection of the libraries since on Red Hat 7 linking with
dnl = Xinerama crashes the dynamic loader.  Make people turn it on
dnl = explicitly.  The autodetection is done above in the Xlib
dnl = detection routines.
dnl =
dnl ========================================================


MOZ_ARG_ENABLE_BOOL(xinerama,
[  --enable-xinerama       Enable Xinerama support
                           ( not safe for Red Hat 7.0 ) ],
  [ if test -n "$MOZ_XINERAMA_LIBS" && \
      test -n "$ac_cv_header_X11_extensions_Xinerama_h"; then
        MOZ_ENABLE_XINERAMA=1
        AC_DEFINE(MOZ_ENABLE_XINERAMA)
    fi ]
)


MOZ_WIDGET_TOOLKIT_LDFLAGS='-lwidget_$(MOZ_WIDGET_TOOLKIT)'
MOZ_GFX_TOOLKIT_LDFLAGS='-lgfx_$(MOZ_WIDGET_TOOLKIT) $(MOZ_XLIBRGB_LDFLAGS)'
WIDGET_DLL='\"libwidget_$(MOZ_WIDGET_TOOLKIT)$(DLL_SUFFIX)\"'
GFXWIN_DLL='\"libgfx_$(MOZ_GFX_TOOLKIT)$(DLL_SUFFIX)\"'

case "$target_os" in
beos*)
    MOZ_WIDGET_TOOLKIT="beos"
    ;;

nto*)
    MOZ_WIDGET_TOOLKIT="photon"
    AC_DEFINE(NO_X11)
    TK_CFLAGS='-I/usr/include/photon'
    TK_LIBS='-lph -lphrender'
    ;;

os2*)
    MOZ_WIDGET_TOOLKIT=os2
    MOZ_WIDGET_TOOLKIT_LDFLAGS='$(DIST)/lib/wdgt$(MOZ_WIDGET_TOOLKIT)'
    MOZ_GFX_TOOLKIT_LDFLAGS='$(DIST)/lib/gfx_$(MOZ_WIDGET_TOOLKIT)'
    WIDGET_DLL='\"wdgt$(MOZ_WIDGET_TOOLKIT)$(DLL_SUFFIX)\"'
    GFXWIN_DLL='\"gfx_$(MOZ_GFX_TOOLKIT)$(DLL_SUFFIX)\"'
    ;;
esac

dnl XXX BROKEN dnl ========================================================
dnl XXX BROKEN dnl =
dnl XXX BROKEN dnl = --enable-gfx-toolkit
dnl XXX BROKEN dnl = 
dnl XXX BROKEN dnl = Select which toolkit to use for gfx (rendering)
dnl XXX BROKEN dnl = 
dnl XXX BROKEN dnl = Choices are:
dnl XXX BROKEN dnl = 
dnl XXX BROKEN dnl = gtk
dnl XXX BROKEN dnl = motif
dnl XXX BROKEN dnl = xlib
dnl XXX BROKEN dnl = 
dnl XXX BROKEN dnl = Default is whatever MOZ_WIDGET_TOOLKIT is
dnl XXX BROKEN dnl = 
dnl XXX BROKEN dnl = The only valid combinations are:
dnl XXX BROKEN dnl = 
dnl XXX BROKEN dnl = widget       gfx
dnl XXX BROKEN dnl = ------       ---
dnl XXX BROKEN dnl = gtk          gtk
dnl XXX BROKEN dnl = motif        motif
dnl XXX BROKEN dnl = xlib         xlib
dnl XXX BROKEN dnl = 
dnl XXX BROKEN dnl = motif        xlib (broken)
dnl XXX BROKEN dnl = gtk          xlib (not tested yet)
dnl XXX BROKEN dnl = 
dnl XXX BROKEN dnl ========================================================
dnl XXX BROKEN dnl MOZ_GFX_TOOLKIT=$MOZ_WIDGET_TOOLKIT
dnl XXX BROKEN dnl 
dnl XXX BROKEN dnl AC_ARG_ENABLE(gfx-toolkit,
dnl XXX BROKEN dnl [  --enable-gfx-toolkit=\$val   Enable \$val fe (defaults to same as widget)],
dnl XXX BROKEN dnl   [ MOZ_GFX_TOOLKIT=`echo "$enableval" | sed -e "s/,.*$//"` ], 
dnl XXX BROKEN dnl   [])
dnl XXX BROKEN dnl 
dnl XXX BROKEN dnl 
dnl XXX BROKEN dnl if echo ":$MOZ_GFX_TOOLKIT" | grep "xlib" >/dev/null
dnl XXX BROKEN dnl then
dnl XXX BROKEN dnl   MOZ_XLIBRGB_LDFLAGS=-lxlibrgb
dnl XXX BROKEN dnl   MOZ_USING_XLIBRGB=1
dnl XXX BROKEN dnl 
dnl XXX BROKEN dnl   AC_DEFINE(MOZ_USING_XLIBRGB)
dnl XXX BROKEN dnl 
dnl XXX BROKEN dnl   AC_SUBST(MOZ_XLIBRGB_LDFLAGS)
dnl XXX BROKEN dnl   AC_SUBST(MOZ_USING_XLIBRGB)
dnl XXX BROKEN dnl fi

dnl ========================================================
dnl = 													   =
dnl = Enable the toolkit as needed                         =
dnl = 													   =
dnl ========================================================

if test "$MOZ_WIDGET_TOOLKIT" = "gtk"
then
	MOZ_ENABLE_GTK=1
    MOZ_ENABLE_XREMOTE=1
	AC_DEFINE(MOZ_WIDGET_GTK)
fi

if test "$MOZ_WIDGET_TOOLKIT" = "xlib"
then
	MOZ_ENABLE_XLIB=1
    MOZ_ENABLE_XREMOTE=1
	AC_DEFINE(MOZ_WIDGET_XLIB)
fi

if test "$MOZ_WIDGET_TOOLKIT" = "qt"
then
	MOZ_ENABLE_QT=1
    MOZ_ENABLE_XREMOTE=1
	AC_DEFINE(MOZ_WIDGET_QT)
fi

if test "$MOZ_WIDGET_TOOLKIT" = "motif"
then
	MOZ_ENABLE_MOTIF=1
    MOZ_ENABLE_XREMOTE=1
	AC_DEFINE(MOZ_WIDGET_MOTIF)
fi

if test "$MOZ_WIDGET_TOOLKIT" = "photon"
then
	MOZ_ENABLE_PHOTON=1
	AC_DEFINE(MOZ_WIDGET_PHOTON)
fi


if test "$MOZ_ENABLE_XREMOTE"; then
    AC_DEFINE(MOZ_ENABLE_XREMOTE)
fi

dnl ========================================================
dnl =													   =
dnl = --with-gtk										   =
dnl = 													   =
dnl = Gtk support hackery                                  =
dnl = 													   =
dnl ========================================================
if test "$no_x" != "yes"
then
	AC_ARG_WITH(gtk,
	[  --with-gtk              Enable GTK+ support ],
	[
		if test "$withval" = "yes"
		then
			MOZ_ENABLE_GTK=1
    	else
			MOZ_ENABLE_GTK=
    	fi
	])
fi

HAVE_GDK_PIXBUF=
MOZ_GDK_PIXBUF_CFLAGS=
MOZ_GDK_PIXBUF_LIBS=

if test "$MOZ_ENABLE_GTK"
then
    AM_PATH_GTK($GTK_VERSION,,
      AC_MSG_ERROR(Test for GTK failed.))


    AM_PATH_GDK_PIXBUF($GDK_PIXBUF_VERSION,
      [HAVE_GDK_PIXBUF=1],)

    if test "$HAVE_GDK_PIXBUF"; then
        MOZ_GDK_PIXBUF_CFLAGS=$GDK_PIXBUF_CFLAGS
        MOZ_GDK_PIXBUF_LIBS=$GDK_PIXBUF_LIBS
    fi

dnl ========================================================
dnl =							   =
dnl = --with-java-supplement				   =
dnl =							   =
dnl = Blackwood Java Code                                  =
dnl =							   =
dnl ========================================================
if test "$no_x" != "yes"
then
	AC_ARG_WITH(java-supplement,
	[  --with-java-supplement  Enable Blackwood Java Code],
	[
		if test "$withval" = "yes"
		then
			MOZ_JAVA_SUPPLEMENT=1
    	else
			MOZ_JAVA_SUPPLEMENT=
    	fi
	])
fi

	dnl ========================================================
	dnl =
	dnl = GLE support
	dnl = 
	dnl = See http://www.SoftHome.net/pub/users/timj/gle/index.htm
	dnl = 
	dnl ========================================================
    MOZ_GLE=
    MOZ_GLE_LDFLAGS=

	AC_ARG_WITH(gle,
	[  --with-gle              GLE support (for debugging gtk widgets) ],
	[
		if test "$withval" = "yes"
		then
			MOZ_GLE=1
            MOZ_GLE_LDFLAGS=-lgle
            AC_DEFINE(MOZ_GLE)
    	else
			MOZ_GLE=
            MOZ_GLE_LDFLAGS=
    	fi
	])

    AC_ARG_WITH(static-gtk,
    [  --with-static-gtk       Link GTK statically if possible],
	sysstaticgtk=$withval)

    if test "$sysstaticgtk" != "yes"
    then
        MOZ_GTK_LDFLAGS=$GTK_LIBS

        if test "$MOZ_GLE"
        then
            MOZ_GTK_LDFLAGS=`echo $MOZ_GTK_LDFLAGS | sed -e 's/-lgtk/-lgle -lgtk/'`
        fi
    else
       changequote(,)

       GTK_LIBS_LOC=`echo $GTK_LIBS | sed 's/\(.*\)\(-lgtk.*\)/\1/'`

       GTK_STATIC_LOC=`echo $GTK_LIBS | sed 's/^ *-L\([^ ]*\) .*$/\1/'`
       GTK_STATIC=`echo $GTK_LIBS | sed 's/^.*-l\(gtk[^ ]*\) .*/\1/'`
       GDK_STATIC=`echo $GTK_LIBS | sed 's/^.*-l\(gdk[^ ]*\) .*/\1/'`

       GLIB_STATIC_LOC=`echo $GTK_LIBS | sed -e 's/^.*-lgdk[^ ]* *-L\([^ ]*\).*$/\1/' -e 's/^.* -lgdk[^ ]* .*$//'`
       if test ! "$GLIB_STATIC_LOC" ; then
         GLIB_STATIC_LOC=$GTK_STATIC_LOC
       fi
       GMODULE_STATIC=`echo $GTK_LIBS | sed 's/^.*-l\(gmodule[^ ]*\) .*/\1/'`
       GLIB_STATIC=`echo $GTK_LIBS | sed 's/^.*-l\(glib[^ ]*\) .*/\1/'`

       GTK_OTHER_LIBS=`echo $GTK_LIBS | sed 's/^.*-lglib *\(.*\)/\1/'`

       changequote([,])

       MOZ_GTK_LDFLAGS="$GTK_STATIC_LOC/lib${GTK_STATIC}.a"
       MOZ_GTK_LDFLAGS="$MOZ_GTK_LDFLAGS $GTK_STATIC_LOC/lib${GDK_STATIC}.a"
       MOZ_GTK_LDFLAGS="$MOZ_GTK_LDFLAGS $GLIB_STATIC_LOC/lib${GMODULE_STATIC}.a"
       MOZ_GTK_LDFLAGS="$MOZ_GTK_LDFLAGS $GLIB_STATIC_LOC/lib${GLIB_STATIC}.a"
       MOZ_GTK_LDFLAGS="$MOZ_GTK_LDFLAGS $GTK_LIBS_LOC $GTK_OTHER_LIBS"
    fi

    MOZ_GTK_CFLAGS=$GTK_CFLAGS

fi
dnl ========================================================
dnl =                                                      =
dnl = End Gtk support hackery                              =
dnl =                                                      =
dnl =   --disable-mozilla-gtk is down below because        =
dnl =   order matters to the Build Configurator.           =
dnl =                                                      =
dnl ========================================================

dnl ========================================================
dnl =                                                      =
dnl = --with-xprint                                        =
dnl =                                                      =
dnl = Xprint support hackery                               =
dnl =                                                      =
dnl ========================================================
if test "$no_x" != "yes"
then
    MOZ_ENABLE_XPRINT=1

    _SAVE_LDFLAGS="$LDFLAGS"
    LDFLAGS="$XLDFLAGS $LDFLAGS"
    AC_CHECK_LIB(Xp, XpGetPrinterList, [XPRINT_LIBS="-lXp"],
    MOZ_ENABLE_XPRINT=, $XEXT_LIBS $XLIBS)
    LDFLAGS="$_SAVE_LDFLAGS"

    MOZ_XPRINT_CFLAGS="$X_CFLAGS"
    MOZ_XPRINT_LDFLAGS="$XLDFLAGS $XPRINT_LIBS"
    MOZ_XPRINT_LDFLAGS="$MOZ_XPRINT_LDFLAGS $XEXT_LIBS $X11_LIBS"

    MOZ_ARG_DISABLE_BOOL(xprint,
    [  --disable-xprint        Disable Xprint support ],
    [
        if test "$enableval" = "no"; then
            MOZ_ENABLE_XPRINT=
        fi
    ])
    if test "$MOZ_ENABLE_XPRINT"; then
        AC_MSG_WARN([Xprint support enabled])
    else
        AC_MSG_WARN([Xprint support disabled])
    fi
fi

dnl ========================================================
dnl = 													   =
dnl = End Xprint support hackery                           =
dnl = 													   =
dnl ========================================================

dnl ========================================================
dnl =													   =
dnl = --with-motif										   =
dnl = 													   =
dnl = Motif support hackery                                =
dnl = 													   =
dnl ========================================================
if test "$no_x" != "yes"
then
	AC_ARG_WITH(motif,
	[  --with-motif            Enable Motif support ],
	[
		if test "$withval" = "yes"
		then
			MOZ_ENABLE_MOTIF=1
    	else
			MOZ_ENABLE_MOTIF=
    	fi
	])
fi

if test "$MOZ_ENABLE_MOTIF"
then
	AC_MSG_CHECKING(for motif insanity)

    if test "$x_includes"
	then
		MOTIF_XINCS="-xif -I$x_includes"
    fi

    detect_motif="${srcdir}/config/mkdetect/detect_motif.sh -cc $CC $MOTIF_XINCS"
    MOTIF_VERSION=`${detect_motif}`
    MOTIF_INCLUDES=`${detect_motif} -if`
    MOTIF_STATIC_FLAGS=`${detect_motif} -sf`
    MOTIF_DYNAMIC_FLAGS=`${detect_motif} -df`
    MOTIF_DYNAMIC_PATHS=`${detect_motif} -dp`
dnl    MOTIF_REQUIRES_XPM=`${detect_motif} -xpm`
    MOTIF_REQUIRES_XPM="False"

    ${srcdir}/config/mkdetect/detect_motif.sh --cleanup

    if test "$MOTIF_REQUIRES_XPM" = "True" -o "$MOTIF_VERSION" = "2.1"
	then
        _SAVE_LDFLAGS="$LDFLAGS"
    	LDFLAGS="$XLDFLAGS $LDFLAGS"
	fi

	if test "$MOTIF_REQUIRES_XPM" = "True"
	then
	    AC_CHECK_LIB(Xpm, XpmWriteFileFromImage, 
		XPM_LIBS="-lXpm", 
		[MISSING_MOTIF="$MISSING_MOTIF -lXpm"], $XLIBS)
	fi

	if test "$MOTIF_VERSION" = "2.1"
	then
	    AC_CHECK_LIB(Xp, XpGetPrinterList, 
		MOTIF_XP_LIBS="-lXp",
		[MISSING_MOTIF="$MISSING_MOTIF -lXp"], $XEXT_LIBS $XLIBS)
	fi

	LDFLAGS="$_SAVE_LDFLAGS"

    MOZ_MOTIF_LDFLAGS="$XLDFLAGS $MOZ_MOTIF_LDFLAGS"

    if test "$MOTIF_STATIC_LIB" = "unknown" -a "$MOTIF_DYNAMIC_LIB" = "unknown"
	then
		AC_MSG_RESULT(no)
	else
		AC_MSG_RESULT(yes)
    fi

    # Get rid of offending error values
    if test "$MOTIF_DYNAMIC_PATHS" = "unknown"
	then 
		MOTIF_DYNAMIC_PATHS=
    fi

    if test "$MOTIF_DYNAMIC_FLAGS" = "unknown"
	then 
		MOTIF_DYNAMIC_FLAGS=
    fi

    if test "$MOTIF_STATIC_FLAGS" = "unknown"
	then 
		MOTIF_STATIC_FLAGS=
    fi

    if test "$MOTIF_INCLUDE_DIR" = "unknown"
	then
		MOTIF_INCLUDE_DIR=
    fi

    MOZ_MOTIF_LDFLAGS="$MOTIF_XP_LIBS $MOZ_MOTIF_LDFLAGS $X_LIBS $XT_LIBS $XMU_LIBS $XPM_LIBS $XEXT_LIBS $X11_LIBS $XSM_LIBS $XICE_LIBS"

    AC_ARG_WITH(static-motif,
    [  --with-static-motif     Link Motif statically if possible],
	sysstaticmotif=$withval)

    if test "$sysstaticmotif" != "yes"; then
	_SAVE_LDFLAGS="$LDFLAGS"
    	LDFLAGS="$MOTIF_DYNAMIC_PATHS $XLDFLAGS $LDFLAGS"
    	AC_CHECK_LIB(Xm, XmStringCreate, 
	    MOZ_MOTIF_LDFLAGS="$MOTIF_DYNAMIC_PATHS $MOTIF_DYNAMIC_FLAGS $MOZ_MOTIF_LDFLAGS",
	    [MISSING_MOTIF="$MISSING_MOTIF $MOTIF_DYNAMIC_FLAGS"], 
	    $MOTIF_DYNAMIC_PATHS $MOZ_MOTIF_LDFLAGS $XLIBS)
	LDFLAGS="$_SAVE_LDFLAGS"
    else
    	AC_CHECK_LIB(Xm, XmStringCreate, 
	    MOZ_MOTIF_LDFLAGS="$MOTIF_STATIC_FLAGS $MOZ_MOTIF_LDFLAGS",
	    [MISSING_MOTIF="$MISSING_MOTIF $MOTIF_STATIC_FLAGS"], 
	    $MOZ_MOTIF_LDFLAGS $XLIBS)
    fi

    MOZ_MOTIF_CFLAGS="$MOTIF_INCLUDES"
fi
dnl ========================================================
dnl = 													   =
dnl = End Motif support hackery                            =
dnl = 													   =
dnl ========================================================


dnl ========================================================
dnl =													   =
dnl = --with-xlib										   =
dnl = 													   =
dnl = Xlib support hackery                                 =
dnl = 													   =
dnl ========================================================
if test "$no_x" != "yes"
then
	AC_ARG_WITH(xlib,
	[  --with-xlib             Enable xlib support ],
	[
		if test "$withval" = "yes"
		then
			MOZ_ENABLE_XLIB=1
    	else
			MOZ_ENABLE_XLIB=
    	fi
	])
fi

if test "$MOZ_ENABLE_XLIB"
then
	AC_MSG_CHECKING(for xlib insanity)
	AC_MSG_RESULT(yes)

    MOZ_XLIB_CFLAGS="$X_CFLAGS"
    MOZ_XLIB_LDFLAGS="$XLDFLAGS"
    MOZ_XLIB_LDFLAGS="$MOZ_XLIB_LDFLAGS $XEXT_LIBS $X11_LIBS"
fi
dnl ========================================================
dnl = 													   =
dnl = End Xlib support hackery                             =
dnl = 													   =
dnl ========================================================


dnl ========================================================
dnl =													   =
dnl = --with-qt  										   =
dnl = 													   =
dnl = Qt support hackery                                   =
dnl = 													   =
dnl ========================================================
if test "$no_x" != "yes"
then
	AC_ARG_WITH(qt,
	[  --with-qt               Enable Qt support ],
	[
		if test "$withval" = "yes"
		then
			MOZ_ENABLE_QT=1
    	else
			MOZ_ENABLE_QT=
    	fi
	])
fi

if test "$MOZ_ENABLE_QT"
then
    QTINCDIR="/include"
    AC_ARG_WITH(qtdir,
    [  --with-qtdir=\$dir       Specify Qt directory ],
    [ QTDIR=$withval])

    if test -z "$QTDIR"; then
      QTDIR="/usr"
      QTINCDIR="/include/qt"
    fi

    if test -x "$QTDIR/bin/moc"; then
      HOST_MOC="$QTDIR/bin/moc"
    else
      AC_CHECK_PROGS(HOST_MOC, moc, "")
    fi
    if test -z "$HOST_MOC"; then
      AC_MSG_ERROR([no acceptable moc preprocessor found])
    fi
    AC_MSG_RESULT([$HOST_MOC])
    MOC=$HOST_MOC

    QT_CFLAGS="-I${QTDIR}${QTINCDIR} -DQT_GENUINE_STR"
    QT_LIBS="-L/usr/X11R6/lib -L${QTDIR}/lib -lqt -lXext -lX11"
dnl    AM_PATH_QT($QT_VERSION,,
dnl      AC_MSG_ERROR(Test for QT failed.))

    AC_ARG_WITH(static-qt,
    [  --with-static-qt        Link qt statically if possible],
	sysstaticqt=$withval)

    if test "$sysstaticqt" != "yes"; then
       MOZ_QT_LDFLAGS=$QT_LIBS
    else
       changequote(,)

       QT_LIBS_LOC=`echo $QT_LIBS | sed 's/\(.*\)\(-lqt.*\)/\1/'`

       QT_STATIC_LOC=`echo $QT_LIBS | sed 's/^ *-L\([^ ]*\) .*$/\1/'`
       QT_STATIC=`echo $QT_LIBS | sed 's/^.*-l\(qt[^ ]*\) .*/\1/'`

       changequote([,])

       MOZ_QT_LDFLAGS="$QT_STATIC_LOC/lib${QT_STATIC}.a"
       MOZ_QT_LDFLAGS="$MOZ_QT_LDFLAGS $QT_STATIC_LOC/lib${QT_STATIC}.a"
       MOZ_QT_LDFLAGS="$MOZ_QT_LDFLAGS $QT_LIBS_LOC"
    fi

    MOZ_QT_CFLAGS=$QT_CFLAGS

    AC_LANG_CPLUSPLUS

    _SAVE_CXXFLAGS=$CXXFLAGS
    _SAVE_LIBS=$LIBS

    CXXFLAGS="$CXXFLAGS $QT_CFLAGS"
    LIBS="$LIBS $QT_LIBS"
    
    AC_MSG_CHECKING(Qt - version >= $QT_VERSION)
    AC_TRY_COMPILE([#include <qglobal.h>],
    [
        #if (QT_VERSION < $QT_VERSION_NUM)
            #error  "QT_VERSION too old"
        #endif
    ],result="yes",result="no")

    AC_MSG_RESULT("$result")
    if test "$result" = "no"; then
       AC_MSG_ERROR([Qt Mozilla requires at least version $QT_VERSION of Qt])
    fi
    CXXFLAGS=$_SAVE_CXXFLAGS
    LIBS=$_SAVE_LIBS

    AC_LANG_C
fi
dnl ========================================================
dnl = 													   =
dnl = End Qt support hackery                               =
dnl = 													   =
dnl ========================================================



dnl ========================================================
dnl = 													   =
dnl = Define TK_LIBS and TK_CFLAGS for apps that need to   =
dnl = link in the toolkit (like viewer)                    =
dnl = 													   =
dnl ========================================================
if test "$MOZ_WIDGET_TOOLKIT" = "gtk"
then
	TK_CFLAGS="$MOZ_GTK_CFLAGS"
	TK_LIBS="$MOZ_GTK_LDFLAGS"
fi

if test "$MOZ_WIDGET_TOOLKIT" = "xlib"
then
	TK_CFLAGS="$MOZ_XLIB_CFLAGS"
	TK_LIBS="$MOZ_XLIB_LDFLAGS"
fi

if test "$MOZ_WIDGET_TOOLKIT" = "qt"
then
	TK_CFLAGS="$MOZ_QT_CFLAGS"
	TK_LIBS="$MOZ_QT_LDFLAGS"
fi

if test "$MOZ_WIDGET_TOOLKIT" = "motif"
then
	TK_CFLAGS="$MOZ_MOTIF_CFLAGS"
	TK_LIBS="$MOZ_MOTIF_LDFLAGS"
fi

dnl ========================================================
dnl = 													   =
dnl = Make sure a default toolkit is set                   =
dnl = 													   =
dnl ========================================================
AC_DEFINE_UNQUOTED(MOZ_DEFAULT_TOOLKIT,"$MOZ_WIDGET_TOOLKIT")

AC_SUBST(GTK_CONFIG)
AC_SUBST(TK_CFLAGS)
AC_SUBST(TK_LIBS)

AC_SUBST(MOZ_ENABLE_GTK)
AC_SUBST(MOZ_ENABLE_MOTIF)
AC_SUBST(MOZ_ENABLE_XLIB)
AC_SUBST(MOZ_ENABLE_GTK)
AC_SUBST(MOZ_ENABLE_MOTIF)
AC_SUBST(MOZ_ENABLE_XLIB)
AC_SUBST(MOZ_ENABLE_QT)
AC_SUBST(MOZ_ENABLE_PHOTON)
AC_SUBST(MOZ_ENABLE_XREMOTE)
AC_SUBST(MOZ_GTK_CFLAGS)
AC_SUBST(MOZ_GTK_LDFLAGS)
AC_SUBST(MOZ_MOTIF_CFLAGS)
AC_SUBST(MOZ_MOTIF_LDFLAGS)
AC_SUBST(MOZ_XLIB_CFLAGS)
AC_SUBST(MOZ_XLIB_LDFLAGS)
AC_SUBST(MOZ_XPRINT_CFLAGS)
AC_SUBST(MOZ_XPRINT_LDFLAGS)
AC_SUBST(MOZ_ENABLE_XPRINT)
AC_SUBST(MOZ_QT_CFLAGS)
AC_SUBST(MOZ_QT_LDFLAGS)
AC_SUBST(MOZ_DEFAULT_TOOLKIT)

AC_SUBST(HAVE_GDK_PIXBUF)
AC_SUBST(MOZ_GDK_PIXBUF_CFLAGS)
AC_SUBST(MOZ_GDK_PIXBUF_LIBS)
AC_SUBST(HAVE_XIE)
AC_SUBST(MOZ_XIE_LIBS)

AC_SUBST(MOZ_XINERAMA_LIBS)
AC_SUBST(MOZ_ENABLE_XINERAMA)

XCFLAGS="$X_CFLAGS"

AC_SUBST(XCFLAGS)
AC_SUBST(XLDFLAGS)
AC_SUBST(XLIBS)

AC_SUBST(MOC)

if test "$MOZ_ENABLE_GTK" || test "$MOZ_ENABLE_QT" \
|| test "$MOZ_ENABLE_XLIB" || test "$MOZ_ENABLE_MOTIF"
then
AC_DEFINE(MOZ_X11)
fi

dnl Check for GLib and libIDL.
dnl ========================================================
SKIP_IDL_CHECK="no"

dnl = Allow users to disable libIDL checking for standalone modules
AC_ARG_WITH(libIDL,
[  --without-libIDL        Skip check for libIDL],
[  if test "$withval" = "no"; then
	SKIP_IDL_CHECK="yes"
   fi ])

dnl
dnl Only do silly ORBit fallback check if not cross-compiling
dnl
if test -z "$CROSS_COMPILE"; then

AC_PATH_PROGS(LIBIDL_CONFIG, $LIBIDL_CONFIG libIDL-config)

dnl We don't have a libIDL config program.  Look for orbit-config instead
if test -z "$LIBIDL_CONFIG"; then
    AC_PATH_PROGS(ORBIT_CONFIG, $ORBIT_CONFIG orbit-config)
    if test -n "$ORBIT_CONFIG"; then
        SKIP_IDL_CHECK="yes"
	_ORBIT_CFLAGS=`${ORBIT_CONFIG} client --cflags`
	_ORBIT_LIBS=`${ORBIT_CONFIG} client --libs`
        _ORBIT_INC_PATH=`${PERL} -e '{ for $f (@ARGV) { print "$f " if ($f =~ m/^-I/); } }' -- ${_ORBIT_CFLAGS}`
        _ORBIT_LIB_PATH=`${PERL} -e '{ for $f (@ARGV) { print "$f " if ($f =~ m/^-L/); } }' -- ${_ORBIT_LIBS}`
        LIBIDL_CFLAGS="$_ORBIT_INC_PATH"
        LIBIDL_LIBS="$_ORBIT_LIB_PATH -lIDL -lglib"
    fi
fi
fi

if test "$SKIP_IDL_CHECK" = "no"
then
AM_PATH_LIBIDL($LIBIDL_VERSION,,
  [echo libIDL $LIBIDL_VERSION or higher is required.]
  [echo See http://andrewtv.org/libIDL/ for more information.]
  [AC_MSG_ERROR(libIDL not installed.)])
fi

if test -n "$CROSS_COMPILE"; then
    if test -z "$HOST_LIBIDL_CONFIG"; then
        HOST_LIBIDL_CONFIG="$LIBIDL_CONFIG"
    fi
    if test -n "$HOST_LIBIDL_CONFIG"; then
        HOST_LIBIDL_CFLAGS=`${HOST_LIBIDL_CONFIG} --cflags`
        HOST_LIBIDL_LIBS=`${HOST_LIBIDL_CONFIG} --libs`
    else
        HOST_LIBIDL_CFLAGS="$LIBIDL_CFLAGS"
        HOST_LIBIDL_LIBS="$LIBIDL_LIBS"
    fi
    if test "$OS_TARGET" = "POSIX_for_OpenVMS_AXP"; then
      LIBIDL_CFLAGS=`${LIBIDL_CONFIG}-VMS --cflags`
      LIBIDL_LIBS=`${LIBIDL_CONFIG}-VMS --libs`
    fi
fi

if test -z "${GLIB_CFLAGS}" || test -z "${GLIB_LIBS}" ; then
    AM_PATH_GLIB(${GLIB_VERSION})
fi

AC_SUBST(LIBIDL_CFLAGS)
AC_SUBST(LIBIDL_LIBS)
AC_SUBST(GLIB_CFLAGS)
AC_SUBST(GLIB_LIBS)

dnl Checks for typedefs, structures, and compiler characteristics.
dnl ========================================================
AC_C_CONST
AC_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_TYPE_UID_T
AC_STRUCT_ST_BLKSIZE

dnl Visual Age for os/2 also defines size_t and off_t in certain 
dnl  header files.  These defines make Visual Age use the mozilla
dnl  defines types.
case "$target" in
    *-*-os2_vacpp)
        AC_DEFINE(__size_t)
        AC_DEFINE(__off_t)
        ;;
esac

dnl Check for int16_t, int32_t, int64_t, int64, uint, uint_t, and uint16_t.
dnl ========================================================
AC_MSG_CHECKING(for int16_t)
AC_CACHE_VAL(ac_cv_int16_t,
 [AC_TRY_COMPILE([#include <stdio.h>
                  #include <sys/types.h>],
                 [int16_t foo = 0;],
                 [ac_cv_int16_t=true],
                 [ac_cv_int16_t=false])])
if test "$ac_cv_int16_t" = true ; then
  AC_DEFINE(HAVE_INT16_T)
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi
AC_MSG_CHECKING(for int32_t)
AC_CACHE_VAL(ac_cv_int32_t,
 [AC_TRY_COMPILE([#include <stdio.h>
                  #include <sys/types.h>],
                 [int32_t foo = 0;],
                 [ac_cv_int32_t=true],
                 [ac_cv_int32_t=false])])
if test "$ac_cv_int32_t" = true ; then
  AC_DEFINE(HAVE_INT32_T)
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi
AC_MSG_CHECKING(for int64_t)
AC_CACHE_VAL(ac_cv_int64_t,
 [AC_TRY_COMPILE([#include <stdio.h>
                  #include <sys/types.h>],
                 [int64_t foo = 0;],
                 [ac_cv_int64_t=true],
                 [ac_cv_int64_t=false])])
if test "$ac_cv_int64_t" = true ; then
  AC_DEFINE(HAVE_INT64_T)
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi
AC_MSG_CHECKING(for int64)
AC_CACHE_VAL(ac_cv_int64,
 [AC_TRY_COMPILE([#include <stdio.h>
                  #include <sys/types.h>],
                 [int64 foo = 0;],
                 [ac_cv_int64=true],
                 [ac_cv_int64=false])])
if test "$ac_cv_int64" = true ; then
  AC_DEFINE(HAVE_INT64)
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi
AC_MSG_CHECKING(for uint)
AC_CACHE_VAL(ac_cv_uint,
 [AC_TRY_COMPILE([#include <stdio.h>
                  #include <sys/types.h>],
                 [uint foo = 0;],
                 [ac_cv_uint=true],
                 [ac_cv_uint=false])])
if test "$ac_cv_uint" = true ; then
  AC_DEFINE(HAVE_UINT)
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi
AC_MSG_CHECKING(for uint_t)
AC_CACHE_VAL(ac_cv_uint_t,
 [AC_TRY_COMPILE([#include <stdio.h>
                  #include <sys/types.h>],
                 [uint foo = 0;],
                 [ac_cv_uint_t=true],
                 [ac_cv_uint_t=false])])
if test "$ac_cv_uint_t" = true ; then
  AC_DEFINE(HAVE_UINT_T)
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi
AC_MSG_CHECKING(for uint16_t)
AC_CACHE_VAL(ac_cv_uint16_t,
 [AC_TRY_COMPILE([#include <stdio.h>
                  #include <sys/types.h>],
                 [uint16_t foo = 0;],
                 [ac_cv_uint16_t=true],
                 [ac_cv_uint16_t=false])])
if test "$ac_cv_uint16_t" = true ; then
  AC_DEFINE(HAVE_UINT16_T)
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi

dnl On the gcc trunk (as of 2001-02-09) _GNU_SOURCE, and thus __USE_GNU,
dnl are defined when compiling C++ but not C.  Since the result of this
dnl test is used only in C++, do it in C++.
AC_LANG_CPLUSPLUS

AC_MSG_CHECKING(for uname.domainname)
AC_CACHE_VAL(ac_cv_have_uname_domainname_field,
    [AC_TRY_COMPILE([#include <sys/utsname.h>],
        [ struct utsname *res; char *domain; 
            (void)uname(res);  if (res != 0) { domain = res->domainname; } ],
        [ac_cv_have_uname_domainname_field=true],
        [ac_cv_have_uname_domainname_field=false])])

if test "$ac_cv_have_uname_domainname_field" = "true"; then
    AC_DEFINE(HAVE_UNAME_DOMAINNAME_FIELD)
    AC_MSG_RESULT(yes)
else
    AC_MSG_RESULT(no)
fi

AC_MSG_CHECKING(for uname.__domainname)
AC_CACHE_VAL(ac_cv_have_uname_us_domainname_field,
    [AC_TRY_COMPILE([#include <sys/utsname.h>],
        [ struct utsname *res; char *domain; 
            (void)uname(res);  if (res != 0) { domain = res->__domainname; } ],
        [ac_cv_have_uname_us_domainname_field=true],
        [ac_cv_have_uname_us_domainname_field=false])])

if test "$ac_cv_have_uname_us_domainname_field" = "true"; then
    AC_DEFINE(HAVE_UNAME_US_DOMAINNAME_FIELD)
    AC_MSG_RESULT(yes)
else
    AC_MSG_RESULT(no)
fi

AC_LANG_C

AC_MSG_CHECKING(for 64-bit OS)
AC_TRY_RUN([ int main () {
    if (sizeof(long) == 8) { return 0; } return 1; } ],
        result="yes", result="no", result="maybe" )
AC_MSG_RESULT("$result")
if test "$result" = "yes"; then
    AC_DEFINE(HAVE_64BIT_OS)
fi

dnl Check for usable wchar_t (2 bytes, unsigned)
dnl (we really don't need the unsignedness check anymore)
dnl ========================================================

AC_CACHE_CHECK(for usable wchar_t (2 bytes, unsigned),
    ac_cv_have_usable_wchar,
    [AC_TRY_RUN([#include <wchar.h>
                 int main () {
                   return (sizeof(wchar_t) != 2) ||
                          (wchar_t)-1 < (wchar_t) 0 ; } ],
                ac_cv_have_usable_wchar="yes",
                ac_cv_have_usable_wchar="no",
                ac_cv_have_usable_wchar="maybe")])
if test "$ac_cv_have_usable_wchar" = "yes"; then
    AC_DEFINE(HAVE_CPP_2BYTE_WCHAR_T)
    HAVE_CPP_2BYTE_WCHAR_T=1
else
dnl This is really gcc-only
dnl Do this test using CXX instead of CC since some versions of gcc
dnl 2.96-2.97 have a signed wchar_t in c++ only.

    _SAVE_CFLAGS=$CFLAGS
    _SAVE_CC=$CC
    CC=$CXX
    CFLAGS="$CFLAGS -fshort-wchar"

    AC_CACHE_CHECK(for compiler -fshort-wchar option, 
        ac_cv_have_usable_wchar_option,
        [AC_TRY_RUN([#include <wchar.h>
                     int main () {
                       return (sizeof(wchar_t) != 2) ||
                              (wchar_t)-1 < (wchar_t) 0 ; } ],
                    ac_cv_have_usable_wchar_option="yes",
                    ac_cv_have_usable_wchar_option="no",
                    ac_cv_have_usable_wchar_option="maybe")])

    if test "$ac_cv_have_usable_wchar_option" = "yes"; then
        AC_DEFINE(HAVE_CPP_2BYTE_WCHAR_T)
        HAVE_CPP_2BYTE_WCHAR_T=1
dnl Since this is gcc-only, CC and CXX should take the same arguments.
        CXXFLAGS="$CXXFLAGS -fshort-wchar"
    else    
        CFLAGS=$_SAVE_CFLAGS
    fi
    CC=$_SAVE_CC
fi

dnl Checks for header files.
dnl ========================================================
AC_HEADER_DIRENT
dnl -ldir is a noop for OS/2
case "$target_os" in
os2*)
    LIBS=
    ;;
esac
AC_CHECK_HEADERS(sys/byteorder.h compat.h getopt.h)
AC_CHECK_HEADERS(sys/bittypes.h memory.h unistd.h sys/filio.h)
AC_CHECK_HEADERS(gnu/libc-version.h nl_types.h)
AC_CHECK_HEADERS(X11/XKBlib.h)

dnl These are all the places some variant of statfs can be hiding.
AC_CHECK_HEADERS(sys/statvfs.h sys/statfs.h sys/vfs.h sys/mount.h)

case $target in
*-aix4.3*)
	;;
*)
	AC_CHECK_HEADERS(sys/cdefs.h)
	;;
esac

dnl Checks for libraries.
dnl ========================================================
case $target in
*-hpux11.*)
	;;
*)
	AC_CHECK_LIB(c_r, gethostbyname_r)
	;;
esac
AC_CHECK_LIB(m, atan)
AC_CHECK_LIB(dl, dlopen)
if test ! "$GNU_CXX"; then

    case $target in
    *-solaris*)
	LIBS="-lCrun $LIBS"
	;;
    *-aix*)
	AC_CHECK_LIB(C_r, demangle)
	;;
     *)
	AC_CHECK_LIB(C, demangle)
	;;
     esac
fi
dnl AC_CHECK_LIB(resolv, res_gethostbyaddr)
AC_CHECK_LIB(socket, socket)
dnl AC_CHECK_LIB(util, login)
dnl AC_CHECK_LIB(nsl, xdr_string)
dnl AC_CHECK_LIB(elf, elf_rawdata)
dnl AC_CHECK_LIB(intl, textdomain)
AC_CHECK_LIB(posix4, shm_open)
dnl AC_CHECK_LIB(w, iswupper)

dnl ========================================================
dnl =
dnl = pthread support
dnl = 
dnl ========================================================
dnl 
dnl Start by checking whether the system support pthreads
dnl 


MOZ_CHECK_PTHREADS(pthreads,
    USE_PTHREADS=1 _PTHREAD_LDFLAGS="-lpthreads",
    MOZ_CHECK_PTHREADS(pthread,
        USE_PTHREADS=1 _PTHREAD_LDFLAGS="-lpthread",
        MOZ_CHECK_PTHREADS(c_r,
            USE_PTHREADS=1 _PTHREAD_LDFLAGS="-lc_r",
            MOZ_CHECK_PTHREADS(c,
                USE_PTHREADS=1
            )
        )
    )
)

dnl
dnl Check the command line for --with-pthreads 
dnl
AC_ARG_WITH(pthreads,
[  --with-pthreads         Force use of system pthread library with NSPR ],
        [if test "$withval" = "yes"
         then
           if test "$USE_PTHREADS"x = x
           then
             AC_MSG_ERROR([ --with-pthreads specified for a system without pthread support ]);
           fi
         else
           USE_PTHREADS=
           _PTHREAD_LDFLAGS=""
         fi] )

dnl
dnl Do the platform specific pthread hackery
dnl
if test "$USE_PTHREADS"x != x
then
	dnl
	dnl See if -pthread is supported.
	dnl
	rm -f conftest*
	ac_cv_have_dash_pthread=no
	AC_MSG_CHECKING(whether ${CC-cc} accepts -pthread)
	echo 'int main() { return 0; }' | cat > conftest.c
	${CC-cc} -pthread -o conftest conftest.c > conftest.out 2>&1
	if test $? -eq 0; then
		if test -z "`egrep -i '(unrecognize|unknown)' conftest.out | grep pthread`" && test -z "`egrep -i '(error|incorrect)' conftest.out`" ; then
			ac_cv_have_dash_pthread=yes
			CFLAGS="$CFLAGS -pthread"
			CXXFLAGS="$CXXFLAGS -pthread"
		fi
	fi
	rm -f conftest*
    AC_MSG_RESULT($ac_cv_have_dash_pthread)

	dnl
	dnl See if -pthreads is supported.
	dnl
    ac_cv_have_dash_pthreads=no
    if test "$ac_cv_have_dash_pthread" = "no"; then
	    AC_MSG_CHECKING(whether ${CC-cc} accepts -pthreads)
    	echo 'int main() { return 0; }' | cat > conftest.c
	    ${CC-cc} -pthreads -o conftest conftest.c > conftest.out 2>&1
    	if test $? -eq 0; then
	    	if test -z "`egrep -i '(unrecognize|unknown)' conftest.out | grep pthreads`" && test -z "`egrep -i '(error|incorrect)' conftest.out`" ; then
			    ac_cv_have_dash_pthreads=yes
			    CFLAGS="$CFLAGS -pthreads"
			    CXXFLAGS="$CXXFLAGS -pthreads"
		    fi
	    fi
	    rm -f conftest*
    	AC_MSG_RESULT($ac_cv_have_dash_pthreads)
    fi

	case "$target" in
	    *-*-freebsd*|*-*-openbsd*|*-*-bsdi*)
			AC_DEFINE(_REENTRANT)
			AC_DEFINE(_THREAD_SAFE)
			dnl -pthread links in -lc_r, so don't specify it explicitly.
			if test "$ac_cv_have_dash_pthread" = "yes"; then
				_PTHREAD_LDFLAGS=""
			else
				_PTHREAD_LDFLAGS="-lc_r"
			fi
			;;

	    *-*-linux*) 
			AC_DEFINE(_REENTRANT) 
			;;

	    *-*-nto*) 
			AC_DEFINE(_REENTRANT) 
			;;

	    *-aix4.3*)
			AC_DEFINE(_REENTRANT) 
			;;

	    *-hpux11.*)
			AC_DEFINE(_REENTRANT) 
			;;

        *-*-os2*)
            USE_PTHREADS=
            _PTHREAD_LDFLAGS=
            ;;

	    alpha*-*-osf*)
			AC_DEFINE(_REENTRANT)
			;;

	    *-*-solaris*) 
    			AC_DEFINE(_REENTRANT) 
			if test ! "$GNU_CC"; then
				CFLAGS="$CFLAGS -mt" 
				CXXFLAGS="$CXXFLAGS -mt" 
			fi
			;;
	*-*-netbsd*)
		USE_PTHREADS=
		_PTHREAD_LDFLAGS=
	esac
fi

dnl
dnl Indicate that platform requires special thread safe 
dnl locking when starting up the OJI JVM 
dnl (see mozilla/modules/oji/src/nsJVMManager.cpp)
dnl ========================================================

   case "$target" in
	*-hpux*)      
		AC_DEFINE(MOZ_OJI_REQUIRE_THREAD_SAFE_ON_STARTUP)
		;;
	*)
		;;
   esac


dnl See if mmap sees writes
dnl ========================================================
dnl For cross compiling, just define it as no, which is a safe default
AC_MSG_CHECKING(whether mmap() sees write()s)

changequote(,)
mmap_test_prog='
    #include <stdlib.h>
    #include <unistd.h>
    #include <sys/mman.h>
    #include <sys/types.h>
    #include <sys/stat.h>
    #include <fcntl.h>

    char fname[] = "conftest.file";
    char zbuff[1024]; /* Fractional page is probably worst case */

    int main() {
	char *map;
	int fd;
	int i;
	unlink(fname);
	fd = open(fname, O_RDWR | O_CREAT, 0660);
	if(fd<0) return 1;
	unlink(fname);
	write(fd, zbuff, sizeof(zbuff));
	lseek(fd, 0, SEEK_SET);
	map = (char*)mmap(0, sizeof(zbuff), PROT_READ, MAP_SHARED, fd, 0);
	if(map==(char*)-1) return 2;
	for(i=0; fname[i]; i++) {
	    int rc = write(fd, &fname[i], 1);
	    if(map[i]!=fname[i]) return 4;
	}
	return 0;
    }
'
changequote([,])

AC_TRY_RUN($mmap_test_prog , result="yes", result="no", result="yes")

AC_MSG_RESULT("$result")

if test "$result" = "no"; then
    AC_DEFINE(MMAP_MISSES_WRITES)
fi


dnl Checks for library functions.
dnl ========================================================
AC_PROG_GCC_TRADITIONAL
AC_FUNC_MEMCMP
AC_CHECK_FUNCS(random qsort strerror lchown fchmod snprintf localtime_r statvfs memmove usleep rint)
AC_CHECK_FUNCS(nl_langinfo)

AC_LANG_CPLUSPLUS
AC_CACHE_CHECK(
    [for gnu_get_libc_version()],
    ac_cv_func_gnu_get_libc_version,
    [AC_TRY_LINK([
        #ifdef HAVE_GNU_LIBC_VERSION_H
        #include <gnu/libc-version.h>
        #endif
        ],
        [const char *glibc_version = gnu_get_libc_version();],
        [ac_cv_func_gnu_get_libc_version=yes],
        [ac_cv_func_gnu_get_libc_version=no] 
        )]
    )

if test "$ac_cv_func_gnu_get_libc_version" = "yes"; then
    AC_DEFINE(HAVE_GNU_GET_LIBC_VERSION)
fi
AC_LANG_C

AC_MSG_CHECKING(how to call gettimeofday)
AC_CACHE_VAL(ac_cv_gettimeofday_args,
 [AC_TRY_COMPILE([#include <stdlib.h>
                  #include <sys/time.h>],
                 [struct timeval tv; struct timezone tzp;
                  gettimeofday(&tv, &tzp);],
                 [ac_cv_gettimeofday_args=2],
                 [AC_TRY_COMPILE([#include <stdlib.h>
                                  #include <sys/time.h>],
                                 [struct timeval tv; gettimeofday(&tv);],
                                 [ac_cv_gettimeofday_args=1],
                                 [ac_cv_gettimeofday_args=0])])])
if test "$ac_cv_gettimeofday_args" = 1 ; then
  AC_DEFINE(HAVE_GETTIMEOFDAY)
  AC_MSG_RESULT(one argument)
elif test "$ac_cv_gettimeofday_args" = 2 ; then
  AC_DEFINE(HAVE_GETTIMEOFDAY)
  AC_DEFINE(GETTIMEOFDAY_TWO_ARGS)
  AC_MSG_RESULT(two arguments)
else
  AC_MSG_RESULT(unknown)
fi

dnl Figure out how to 'allocate' paged memory areas (see xpcom/ds/nsPageMgr.cpp)
dnl First see if /dev/zero is supported so that we
dnl can mmap against it.  If not (hpux) then see if
dnl if valloc is supported (which is hpux's malloc
dnl on paged memory boundary
dnl ========================================================

AC_MSG_CHECKING(for /dev/zero)
if test "$HAVE_DEV_ZERO"; then
  AC_DEFINE(HAVE_DEV_ZERO)
  AC_MSG_RESULT(yes)
else
if test -r /dev/zero && test -z "$CROSS_COMPILE"; then
  AC_DEFINE(HAVE_DEV_ZERO)
  AC_MSG_RESULT(yes)
else
        AC_MSG_RESULT(no)
        AC_MSG_CHECKING(for valloc)
        AC_CACHE_VAL(ac_cv_valloc,
                     [AC_TRY_COMPILE([#include <stdlib.h>],
                                     [void *ptr = valloc(1);],
                                     [ac_cv_valloc=true],
                                     [ac_cv_valloc=false])])

	if test "$ac_cv_valloc" = true ; then
	  AC_DEFINE(HAVE_VALLOC)
	  AC_MSG_RESULT(yes)
	else
	  AC_MSG_RESULT(no)
	fi
fi
fi

dnl Does this platform require array notation to assign to a va_list?
dnl If cross-compiling, we assume va_list is "normal".  If this breaks
dnl you, set ac_cv_valistisarray=true and maybe define HAVE_VA_LIST_AS_ARRAY
dnl also just to be sure.
AC_MSG_CHECKING(whether va_list assignments need array notation)
AC_CACHE_VAL(ac_cv_valistisarray,
	[AC_TRY_RUN([#include <stdlib.h>
		     #include <stdarg.h>
		     void foo(int i, ...) {
			va_list ap1, ap2;
			va_start(ap1, i);
			ap2 = ap1;
			if (va_arg(ap2, int) != 123 || va_arg(ap1, int) != 123) { exit(1); }
			va_end(ap1); va_end(ap2);
		     }
		     int main() { foo(0, 123); return(0); }],
		    [ac_cv_valistisarray=false],
		    [ac_cv_valistisarray=true],
		    [ac_cv_valistisarray=false])])

if test "$ac_cv_valistisarray" = true ; then
	AC_DEFINE(HAVE_VA_LIST_AS_ARRAY)
	AC_MSG_RESULT(yes)
else
	AC_MSG_RESULT(no)
fi

dnl Check for dll-challenged libc's.
dnl This check is apparently only needed for Linux.
case "$target" in
	*-linux*)
	    dnl ===================================================================
	    curdir=`pwd`
	    rm -f conftest* /tmp/conftest*
	    cat >> conftest.C <<\EOF
#include <stdio.h>
#include <link.h>
#include <dlfcn.h>
#ifdef _dl_loaded
void __dump_link_map(void) {
  struct link_map *map = _dl_loaded;
  while (NULL != map) {printf("0x%08x %s\n", map->l_addr, map->l_name); map = map->l_next;}
}
int main() {
  dlopen("./conftest1.so",RTLD_LAZY);
  dlopen("./../tmp/conftest1.so",RTLD_LAZY);
  dlopen("/tmp/conftest1.so",RTLD_LAZY);
  dlopen("/tmp/../tmp/conftest1.so",RTLD_LAZY);
  __dump_link_map();
}
#else
/* _dl_loaded isn't defined, so this should be either a libc5 (glibc1) system, or a glibc2 system that doesn't have the multiple load bug (i.e., RH6.0).*/
int main() { printf("./conftest1.so\n"); }
#endif
EOF

	    cat >> conftest1.C <<\EOF
#include <stdio.h>
void foo(void) {printf("foo in dll called\n");}
EOF

	    ${CXX-g++} -fPIC -c -g conftest1.C
	    ${CXX-g++} -shared -Wl,-h -Wl,conftest1.so -o conftest1.so conftest1.o
	    ${CXX-g++} -g conftest.C -o conftest -ldl
	    cp -f conftest1.so conftest /tmp
	    cd /tmp
	    if test `./conftest | grep conftest1.so | wc -l` -gt 1
	    then
		echo
		echo "*** Your libc has a bug that can result in loading the same dynamic"
		echo "*** library multiple times.  This bug is known to be fixed in glibc-2.0.7-32"
		echo "*** or later.  However, if you choose not to upgrade, the only effect"
		echo "*** will be excessive memory usage at runtime."
		echo
	    fi
	    cd ${curdir}
	    rm -f conftest* /tmp/conftest*
	    dnl ===================================================================
	    ;;
esac

dnl Checks for specific (libc) global variables
AC_MSG_CHECKING(for sys_errlist/sys_nerr)
AC_CACHE_VAL(ac_cv_syserrlist,
 [AC_TRY_COMPILE([#include <stdio.h>
                  #include <errno.h>],
                 [char *foo = sys_errlist[sys_nerr-1];],
                 [ac_cv_syserrlist=true],
                 [ac_cv_syserrlist=false])])
if test "$ac_cv_syserrlist" = true ; then
  AC_DEFINE(HAVE_SYSERRLIST)
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi  

dnl By default, turn rtti and exceptions off on g++/egcs
dnl ========================================================
if test "$GNU_CXX"; then

  _MOZ_RTTI_FLAGS=${_COMPILER_PREFIX}-fno-rtti

  AC_MSG_CHECKING(for C++ exceptions flag)

  dnl They changed -f[no-]handle-exceptions to -f[no-]exceptions in g++ 2.8
  AC_CACHE_VAL(ac_cv_cxx_exceptions_flags,
  [echo "int main() { return 0; }" | cat > conftest.C

  ${CXX-g++} ${CXXFLAGS} -c -fno-handle-exceptions conftest.C > conftest.out 2>&1

  if egrep "warning.*renamed" conftest.out >/dev/null; then
    ac_cv_cxx_exceptions_flags=${_COMPILER_PREFIX}-fno-exceptions
  else
    ac_cv_cxx_exceptions_flags=${_COMPILER_PREFIX}-fno-handle-exceptions
  fi

  rm -f conftest*])

  AC_MSG_RESULT($ac_cv_cxx_exceptions_flags)
  _MOZ_EXCEPTIONS_FLAGS=$ac_cv_cxx_exceptions_flags
fi
if test "$MIPSPRO_CXX"; then
  _MOZ_EXCEPTIONS_FLAGS="-LANG:exceptions=OFF"
fi

dnl Put your C++ language/feature checks below
AC_LANG_CPLUSPLUS

AC_MSG_CHECKING(for ios::binary)
AC_CACHE_VAL(ac_cv_ios_binary,
 [AC_TRY_COMPILE([#include <iostream.h>]
	         [#include <fstream.h>],
                 [char *buffer = "config.log";
		  fstream *mFileStream=new fstream(buffer, ios::binary);],
                 [ac_cv_ios_binary=true],
                 [ac_cv_ios_binary=false])])
if test "$ac_cv_ios_binary" = true ; then
  AC_DEFINE(HAVE_IOS_BINARY)
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi  


AC_MSG_CHECKING(for ios::bin)
AC_CACHE_VAL(ac_cv_ios_bin,
 [AC_TRY_COMPILE([#include <iostream.h>]
               [#include <fstream.h>],
                 [char *buffer = "config.log";
                fstream *mFileStream=new fstream(buffer, ios::bin);],
                 [ac_cv_ios_bin=true],
                 [ac_cv_ios_bin=false])])
if test "$ac_cv_ios_bin" = true ; then
  AC_DEFINE(HAVE_IOS_BIN)
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi  

AC_MSG_CHECKING(for ostreams)
AC_CACHE_VAL(ac_cv_ostream,
  [AC_TRY_LINK([#include <iostream.h>],
               [streambuf *xxx; ostream *foo=new ostream(xxx);],
               [ac_cv_ostream=true],
               [ac_cv_ostream=false])])
if test "$ac_cv_ostream" = true ; then
  AC_DEFINE(HAVE_OSTREAM)
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
  _SAVE_LIBS=$LIBS
  LIBS="$LIBS -lstdc++"
  if test "$target_os" = "os2_emx"; then
    LIBS='-lemxio -lsocket -lstdcpp'
  fi
  AC_MSG_CHECKING(for ostreams in -lstdc++)
  AC_CACHE_VAL(ac_cv_lib_stdcpp_ostream,
    [AC_TRY_LINK([#include <iostream.h>],
                [ostream *foo=new ostream();],
                [ac_cv_lib_stdcpp_ostream=true],
                [ac_cv_lib_stdcpp_ostream=false])])
  if test "$ac_cv_lib_stdcpp_ostream" = true ; then
    AC_DEFINE(HAVE_OSTREAM)
    AC_MSG_RESULT(yes)
  else
    AC_MSG_RESULT(no)
    LIBS=$_SAVE_LIBS
  fi
fi

AC_CACHE_CHECK(for C++ \"bool\" keyword,
               ac_cv_cpp_bool,
               [AC_TRY_COMPILE(bool b;,
                               b = true;,
                               ac_cv_cpp_bool=yes,
                               ac_cv_cpp_bool=no)])
if test "$ac_cv_cpp_bool" = no ; then
   AC_DEFINE(NEEDS_bool)
fi


AC_CACHE_CHECK(for C++ \"explicit\" keyword,
               ac_cv_cpp_explicit,
               [AC_TRY_COMPILE(class X {
                               public: explicit X(int i) : i_(i) {}
                               private: int i_;
                               };,
                               X x(3);,
                               ac_cv_cpp_explicit=yes,
                               ac_cv_cpp_explicit=no)])
if test "$ac_cv_cpp_explicit" = yes ; then
   AC_DEFINE(HAVE_CPP_EXPLICIT)
fi

dnl Check for template specialization
dnl Test code and requirement from scc@netscape.com.
dnl Autoconf cut-and-paste job by shaver@mozilla.org.
AC_CACHE_CHECK(for C++ template specialization support,
               ac_cv_cpp_template_specialization,
               [AC_TRY_COMPILE(template <class T> struct X { int a; };
                               class Y {};
                               struct X<Y> { double a; };,
                               X<int> int_x;
                               X<Y> y_x;,
                               ac_cv_cpp_template_specialization=yes,
                               ac_cv_cpp_template_specialization=no)])
dnl The above test works fine for Sun's WorkShop 4.2 compiler, but
dnl dies horribly trying to build mozilla with HAVE_CPP_SPECIALIZATION
dnl defined.  So, even though the output above will say yes, we force
dnl it to reconsider....  (5.0 works fine, though.)
dnl Info and testing provided by tor@cs.brown.edu.
case "$target" in
  *-*-solaris*)
	if test ! "$GNU_CC"; then
	   if test ! -z "`${CC} -V 2>&1 | head -1 | grep '4.2'`"; then
             ac_cv_cpp_template_specialization=no
	   fi
	fi
	;;
esac
if test "$ac_cv_cpp_template_specialization" = yes ; then
  AC_DEFINE(HAVE_CPP_SPECIALIZATION)
fi

dnl Check for support of modern template specialization syntax
dnl Test code and requirement from scc@netscape.com.
dnl Autoconf cut-and-paste job by waterson@netscape.com
AC_CACHE_CHECK(for modern C++ template specialization syntax support,
               ac_cv_cpp_modern_specialize_template_syntax,
               [AC_TRY_COMPILE(template <class T> struct X { int a; };
                               class Y {};
                               template <> struct X<Y> { double a; };,
                               X<int> int_x;
                               X<Y> y_x;,
                               ac_cv_cpp_modern_specialize_template_syntax=yes,
                               ac_cv_cpp_modern_specialize_template_syntax=no)])
if test "$ac_cv_cpp_modern_specialize_template_syntax" = yes ; then
  AC_DEFINE(HAVE_CPP_MODERN_SPECIALIZE_TEMPLATE_SYNTAX)
fi


dnl Some compilers support only full specialization, and some don't.
AC_CACHE_CHECK(whether partial template specialization works,
               ac_cv_cpp_partial_specialization,
               [AC_TRY_COMPILE(template <class T> class Foo {};
                               template <class T> class Foo<T*> {};,
                               return 0;,
                               ac_cv_cpp_partial_specialization=yes,
                               ac_cv_cpp_partial_specialization=no)])
if test "$ac_cv_cpp_partial_specialization" = yes ; then
  AC_DEFINE(HAVE_CPP_PARTIAL_SPECIALIZATION)
fi


dnl Some compilers have limited support for operators with templates;
dnl specifically, it is necessary to define derived operators when a base
dnl class's operator declaration should suffice.
AC_CACHE_CHECK(whether operators must be re-defined for templates derived from templates,
               ac_cv_need_derived_template_operators,
               [AC_TRY_COMPILE([template <class T> class Base { };
                                template <class T>
                                Base<T> operator+(const Base<T>& lhs, const Base<T>& rhs) { return lhs; }
                                template <class T> class Derived : public Base<T> { };],
                               [Derived<char> a, b;
                                Base<char> c = a + b;
                                return 0;],
                               ac_cv_need_derived_template_operators=no,
                               ac_cv_need_derived_template_operators=yes)])
if test "$ac_cv_need_derived_template_operators" = yes ; then
  AC_DEFINE(NEED_CPP_DERIVED_TEMPLATE_OPERATORS)
fi


dnl Some compilers have trouble detecting that a template class
dnl that derives from another template is actually an instance
dnl of the base class. This test checks for that.
AC_CACHE_CHECK(whether we need to cast a derived template to pass as its base class,
               ac_cv_need_cpp_template_cast_to_base,
               [AC_TRY_COMPILE([template <class T> class Base { };
                                template <class T> class Derived : public Base<T> { };
                                template <class T> int foo(const Base<T>&) { return 0; }],
                               [Derived<char> bar; return foo(bar);],
                               ac_cv_need_cpp_template_cast_to_base=no,
                               ac_cv_need_cpp_template_cast_to_base=yes)])
if test "$ac_cv_need_cpp_template_cast_to_base" = yes ; then
  AC_DEFINE(NEED_CPP_TEMPLATE_CAST_TO_BASE)
fi

dnl Some compilers have trouble resolving the ambiguity between two
dnl functions whose arguments differ only by cv-qualifications.
AC_CACHE_CHECK(whether the compiler can resolve const ambiguities for templates,
               ac_cv_can_resolve_const_ambiguity,
               [AC_TRY_COMPILE([
                                template <class T> class ptrClass {
                                  public: T* ptr;
                                };

                                template <class T> T* a(ptrClass<T> *arg) {
                                  return arg->ptr;
                                }

                                template <class T>
                                const T* a(const ptrClass<T> *arg) {
                                  return arg->ptr;
                                }
                               ],
                               [ ptrClass<int> i;
                                 a(&i); ],
                               ac_cv_can_resolve_const_ambiguity=yes,
                               ac_cv_can_resolve_const_ambiguity=no)])
if test "$ac_cv_can_resolve_const_ambiguity" = no ; then
  AC_DEFINE(CANT_RESOLVE_CPP_CONST_AMBIGUITY)
fi

dnl
dnl We dont do exceptions on unix.  The only reason this used to be here
dnl is that mozilla/xpcom/tests/TestCOMPtr.cpp has a test which uses 
dnl exceptions.  But, we turn exceptions off by default and this test breaks.
dnl So im commenting this out until someone writes some artificial 
dnl intelligence to detect not only if the compiler has exceptions, but if 
dnl they are enabled as well.
dnl 
dnl AC_CACHE_CHECK(for C++ \"exceptions\",
dnl                ac_cv_cpp_exceptions,
dnl                [AC_TRY_COMPILE(class X { public: X() {} };
dnl                                static void F() { throw X(); },
dnl                                try { F(); } catch(X & e) { },
dnl                                ac_cv_cpp_exceptions=yes,
dnl                                ac_cv_cpp_exceptions=no)])
dnl if test $ac_cv_cpp_exceptions = yes ; then
dnl    AC_DEFINE(HAVE_CPP_EXCEPTIONS)
dnl fi

dnl Some compilers have marginal |using| support; for example, gcc-2.7.2.3
dnl supports it well enough to allow us to use it to change access, but not
dnl to resolve ambiguity. The next two tests determine how well the |using|
dnl keyword is supported.
dnl
dnl Check to see if we can change access with |using|.
AC_CACHE_CHECK(whether the C++ \"using\" keyword can change access,
               ac_cv_cpp_access_changing_using,
               [AC_TRY_COMPILE(class X { public: int go(const X&) {return 3;} };
                               class Y : public X {
                                 public:  int go(int) {return 2;}
                                 private: using X::go;
                               };,
                               X x; Y y;,
                               ac_cv_cpp_access_changing_using=yes,
                               ac_cv_cpp_access_changing_using=no)])
if test "$ac_cv_cpp_access_changing_using" = yes ; then
   AC_DEFINE(HAVE_CPP_ACCESS_CHANGING_USING)
fi

dnl Check to see if we can resolve ambiguity with |using|.
AC_CACHE_CHECK(whether the C++ \"using\" keyword resolves ambiguity,
               ac_cv_cpp_ambiguity_resolving_using,
               [AC_TRY_COMPILE(class X { 
                                 public: int go(const X&) {return 3;}
                                         int jo(const X&) {return 3;}
                               };
                               class Y : public X {
                                 public:  int go(int) {return 2;}
                                          int jo(int) {return 2;}
                                          using X::jo;
                                 private: using X::go;
                               };,
                               X x; Y y; y.jo(x);,
                               ac_cv_cpp_ambiguity_resolving_using=yes,
                               ac_cv_cpp_ambiguity_resolving_using=no)])
if test "$ac_cv_cpp_ambiguity_resolving_using" = yes ; then
   AC_DEFINE(HAVE_CPP_AMBIGUITY_RESOLVING_USING)
fi

dnl Check to see if the |std| namespace is supported. If so, we'll want
dnl to qualify any standard library calls with "std::" to ensure that
dnl those functions can be resolved.
AC_CACHE_CHECK(for \"std::\" namespace,
               ac_cv_cpp_namespace_std,
               [AC_TRY_COMPILE([#include <algorithm>],
                               [return std::min(0, 1);],
                               ac_cv_cpp_namespace_std=yes,
                               ac_cv_cpp_namespace_std=no)])
if test "$ac_cv_cpp_namespace_std" = yes ; then
   AC_DEFINE(HAVE_CPP_NAMESPACE_STD)
fi

dnl Older compilers are overly ambitious with respect to using the standard
dnl template library's |operator!=()| when |operator==()| is defined. In
dnl which case, defining |operator!=()| in addition to |operator==()| causes
dnl ambiguity at compile-time. This test checks for that case.
AC_CACHE_CHECK(whether standard template operator!=() is ambiguous,
               ac_cv_cpp_unambiguous_std_notequal,
               [AC_TRY_COMPILE([#include <algorithm>
                                struct T1 {};
                                int operator==(const T1&, const T1&) { return 0; }
                                int operator!=(const T1&, const T1&) { return 0; }],
                               [T1 a,b; return a != b;],
                               ac_cv_cpp_unambiguous_std_notequal=unambiguous,
                               ac_cv_cpp_unambiguous_std_notequal=ambiguous)])
if test "$ac_cv_cpp_unambiguous_std_notequal" = unambiguous ; then
  AC_DEFINE(HAVE_CPP_UNAMBIGUOUS_STD_NOTEQUAL)
fi


AC_CACHE_CHECK(for C++ reinterpret_cast,
               ac_cv_cpp_reinterpret_cast,
               [AC_TRY_COMPILE(struct X { int i; };
                               struct Y { int i; };,
                               X x; X*const z = &x;Y*y = reinterpret_cast<Y*>(z);,
                               ac_cv_cpp_reinterpret_cast=yes,
                               ac_cv_cpp_reinterpret_cast=no)])
if test "$ac_cv_cpp_reinterpret_cast" = yes ; then
   AC_DEFINE(HAVE_CPP_NEW_CASTS)
fi

dnl See if a dynamic_cast to void* gives the most derived object.
AC_CACHE_CHECK(for C++ dynamic_cast to void*,
               ac_cv_cpp_dynamic_cast_void_ptr,
               [AC_TRY_RUN([class X { int i; public: virtual ~X() { } };
                            class Y { int j; public: virtual ~Y() { } };
                            class Z : public X, public Y { int k; };

                            int main() {
                                 Z mdo;
                                 X *subx = (X*)&mdo;
                                 Y *suby = (Y*)&mdo;
                                 return !((((void*)&mdo != (void*)subx) &&
                                           ((void*)&mdo == dynamic_cast<void*>(subx))) ||
                                          (((void*)&mdo != (void*)suby) &&
                                           ((void*)&mdo == dynamic_cast<void*>(suby))));
                            }],
                           ac_cv_cpp_dynamic_cast_void_ptr=yes,
                           ac_cv_cpp_dynamic_cast_void_ptr=no,
                           ac_cv_cpp_dynamic_cast_void_ptr=no)])
if test "$ac_cv_cpp_dynamic_cast_void_ptr" = yes ; then
   AC_DEFINE(HAVE_CPP_DYNAMIC_CAST_TO_VOID_PTR)
fi


dnl note that this one is reversed - if the test fails, then
dnl we require implementations of unused virtual methods. Which
dnl really blows because it means we'll have useless vtable
dnl bloat.
AC_CACHE_CHECK(whether C++ requires implementation of unused virtual methods,
               ac_cv_cpp_unused_required,
               [AC_TRY_LINK(class X {private: virtual void never_called();};,
                               X x;,
                               ac_cv_cpp_unused_required=no,
                               ac_cv_cpp_unused_required=yes)])
if test "$ac_cv_cpp_unused_required" = yes ; then
   AC_DEFINE(NEED_CPP_UNUSED_IMPLEMENTATIONS)
fi


dnl Some compilers have trouble comparing a constant reference to a templatized
dnl class to zero, and require an explicit operator==() to be defined that takes
dnl an int. This test separates the strong from the weak.

AC_CACHE_CHECK(for trouble comparing to zero near std::operator!=(),
               ac_cv_trouble_comparing_to_zero,
               [AC_TRY_COMPILE([#include <algorithm>
                                template <class T> class Foo {};
                                class T2;
                                template <class T> int operator==(const T2*, const T&) { return 0; }
                                template <class T> int operator!=(const T2*, const T&) { return 0; }],
                               [Foo<int> f; return (0 != f);],
                               ac_cv_trouble_comparing_to_zero=no,
                               ac_cv_trouble_comparing_to_zero=yes)])
if test "$ac_cv_trouble_comparing_to_zero" = yes ; then
  AC_DEFINE(HAVE_CPP_TROUBLE_COMPARING_TO_ZERO)
fi



dnl End of C++ language/feature checks
AC_LANG_C

dnl ========================================================
dnl =
dnl =  Internationalization checks
dnl =
dnl ========================================================
dnl
dnl Internationalization and Locale support is different
dnl on various UNIX platforms.  Checks for specific i18n
dnl features go here.

dnl check for LC_MESSAGES
AC_CACHE_CHECK(for LC_MESSAGES,
		ac_cv_i18n_lc_messages,
		[AC_TRY_COMPILE([#include <locale.h>],
				[int category = LC_MESSAGES;],
				ac_cv_i18n_lc_messages=yes,
				ac_cv_i18n_lc_messages=no)])
if test "$ac_cv_i18n_lc_messages" = yes; then
   AC_DEFINE(HAVE_I18N_LC_MESSAGES)
fi 	


dnl Mozilla specific options
dnl ========================================================
dnl The macros used for command line options
dnl are defined in build/autoconf/altoptions.m4.

dnl ========================================================
dnl =
dnl = Components and Features
dnl = 
dnl ========================================================
MOZ_ARG_HEADER(Components and Features)

MOZ_ARG_DISABLE_BOOL(async-dns,
[  --disable-async-dns     Disable separate dns thread],
  NO_UNIX_ASYNC_DNS=1)

MOZ_ARG_DISABLE_BOOL(logging,
[  --disable-logging       Disable logging facilities],
  NS_DISABLE_LOGGING=1)
if test "$NS_DISABLE_LOGGING"; then
    AC_DEFINE(NS_DISABLE_LOGGING)
else
    AC_DEFINE(MOZ_LOGGING)
fi

dnl build mozilla/xpfe by default
MOZ_BUILD_XPFE=1
MOZ_ARG_DISABLE_BOOL(build-xpfe,
[  --disable-build-xpfe    Disable building of mozilla/xpfe (BROKEN)],
  MOZ_BUILD_XPFE= )

dnl build Mail & News by default
MOZ_MAIL_NEWS=1
MOZ_ARG_DISABLE_BOOL(mailnews,
[  --disable-mailnews      Disable building of mail & news components],
  MOZ_MAIL_NEWS= )
if test "$MOZ_MAIL_NEWS"; then
  AC_DEFINE(MOZ_MAIL_NEWS)
fi
AC_SUBST(MOZ_MAIL_NEWS)

dnl Turn on editor logging by default
MOZ_EDITOR_API_LOG=1
MOZ_ARG_DISABLE_BOOL(editor-api-log,
[  --disable-editor-api-log
                          Disable editor logging],
  MOZ_EDITOR_API_LOG= )
if test "$MOZ_EDITOR_API_LOG"; then
  AC_DEFINE(MOZ_EDITOR_API_LOG)
fi
AC_SUBST(MOZ_EDITOR_API_LOG)

dnl Turn on the new lightweight gfx text control frames
MOZ_ENDER_LITE=1
MOZ_ARG_DISABLE_BOOL(ender-lite,
[  --disable-ender-lite    Disable new lightweight text control frames],
  MOZ_ENDER_LITE= )
if test "$MOZ_ENDER_LITE"; then
  AC_DEFINE(MOZ_ENDER_LITE)
fi
AC_SUBST(MOZ_ENDER_LITE)

dnl Turn on malloc tracing
NS_TRACE_MALLOC=
MOZ_ARG_ENABLE_BOOL(trace-malloc,
[  --enable-trace-malloc   Enable malloc tracing],
  NS_TRACE_MALLOC=1 )
if test "$NS_TRACE_MALLOC"; then
  AC_DEFINE(NS_TRACE_MALLOC)
fi
AC_SUBST(NS_TRACE_MALLOC)

dnl Turn on reflow counting
MOZ_REFLOW_PERF=
MOZ_ARG_ENABLE_BOOL(reflow-perf,
[  --enable-reflow-perf    Enable reflow performance tracing],
  MOZ_REFLOW_PERF=1 )
if test "$MOZ_REFLOW_PERF"; then
  AC_DEFINE(MOZ_REFLOW_PERF)
fi
AC_SUBST(MOZ_REFLOW_PERF)

dnl make sure that we compile in multi-processor support
NS_MT_SUPPORTED=1
AC_DEFINE(NS_MT_SUPPORTED)

dnl build the tests by default
ENABLE_TESTS=1
MOZ_ARG_DISABLE_BOOL(tests,
[  --disable-tests         Do not build tests libraries & programs],
  ENABLE_TESTS= )

dnl bi-directional support on by default
IBMBIDI=1
MOZ_ARG_DISABLE_BOOL(bidi,
[  --disable-bidi           Disable bi-directional support],
  IBMBIDI= )
if test "$IBMBIDI"; then
  AC_DEFINE(IBMBIDI)
fi

dnl ========================================================
dnl =
dnl = --enable-monolithic-toolkit
dnl =
dnl = We dont need to link in the toolkit statically into the
dnl = app.  With the exception of some test programs (most
dnl = notably the gecko viewer) mozilla does not have any
dnl = toolkit specific code in the "app"
dnl =
dnl = The only places where toolkit specific code is needed
dnl = are:
dnl =
dnl = mozilla/widget
dnl = mozilla/widget/timer
dnl = mozilla/gfx
dnl =
dnl = These components themselves link with the toolkit.  At
dnl = runtime, Mozilla will dlopen() these components and 
dnl = use the code in them without having to link with them.
dnl =
dnl = This all happens through XPCOM.
dnl =
dnl = Doing this makes it possible to have one single set of
dnl = binaries for mozilla which can effectively use a 
dnl = different widget toolkit at runtime.
dnl =
dnl = However, on some unik platforms, the linker (ld) and the
dnl = runtime loader (ld.so) might not be smart enough to 
dnl = resolve toolkit dependencies linked into components
dnl = which are later dlopen()ed by mozilla.
dnl =
dnl = For this reason, the --enable-monolithic-toolkit flag
dnl = is provided.  If set, it will cause the toolkit libs
dnl = to be linked in to mozilla itself, and not the 
dnl = 3 components above (widget, gfx and timer).
dnl =
dnl = In the case statement following this comment, I have
dnl = forced the toolkit to be monolithic for all platforms
dnl = that are not Linux and Solaris, as these are the only
dnl = ones that I could test.
dnl =
dnl = If you have questions, comments, or problems getting
dnl = this to work on your platform, send me email:
dnl = 
dnl = ramiro@fateware.com
dnl =
dnl ========================================================

dnl Assume life sucks
MOZ_MONOLITHIC_TOOLKIT=1

dnl The following are the only platforms I tested  -ramiro
dnl OpenVMS added by Colin Blake
dnl Tru64   added by Jim Nance
dnl hpux added by John Gaunt workaround for bug 39747
dnl irix added for bug 53471
dnl nto added by Jerry Kirk 
case "$target" in
    *-*-linux*)   MOZ_MONOLITHIC_TOOLKIT= ;;
    *-*-solaris*) MOZ_MONOLITHIC_TOOLKIT= ;;
    *-openvms*)   MOZ_MONOLITHIC_TOOLKIT= ;;
    *-bsdi*)      MOZ_MONOLITHIC_TOOLKIT= ;;
    *-freebsd*)   MOZ_MONOLITHIC_TOOLKIT= ;;
    *-netbsd*)    MOZ_MONOLITHIC_TOOLKIT= ;;
    *-openbsd*)   MOZ_MONOLITHIC_TOOLKIT= ;;
    *-*-aix*)     MOZ_MONOLITHIC_TOOLKIT= ;;
    *-*-osf*)     MOZ_MONOLITHIC_TOOLKIT= ;;
    *-hpux*)      MOZ_MONOLITHIC_TOOLKIT= ;;
    *-irix*)      MOZ_MONOLITHIC_TOOLKIT= ;;
    *-nto*)       MOZ_MONOLITHIC_TOOLKIT= ;;
esac


MOZ_ARG_ENABLE_BOOL(monolithic-toolkit,
[  --enable-monolithic-toolkit
                          Link the toolkit into the app],
  MOZ_MONOLITHIC_TOOLKIT=1)


if test "$MOZ_MONOLITHIC_TOOLKIT"
then
  AC_DEFINE(MOZ_MONOLITHIC_TOOLKIT)
fi
dnl ========================================================
dnl =
dnl = End MOZ_MONOLITHIC_TOOLKIT hacks
dnl =
dnl ========================================================

dnl ========================================================
dnl =
dnl = --enable-modules=mod1,mod2
dnl =
dnl = Only selectively build modules
dnl =
dnl ========================================================
BUILD_MODULES=all
MOZ_ARG_ENABLE_STRING(modules,
[  --enable-modules        Enable standalone build of specific modules],
  [ BUILD_MODULES=`echo $enableval | sed 's/,/ /g'` ] )
dnl ========================================================


dnl ========================================================
dnl =
dnl = --diable-pic-dso-cflags
dnl =
dnl = A hack to disable the generation of PIC for shared libs
dnl =
dnl ========================================================
ENABLE_PIC_DSO_CFLAGS=1

MOZ_ARG_DISABLE_BOOL(pic-dso-cflags,
[  --disable-pic-dso-cflags
                          Do not generate PIC for shared libs],
  ENABLE_PIC_DSO_CFLAGS= )

if test ! "$ENABLE_PIC_DSO_CFLAGS"
then
  DSO_PIC_CFLAGS=""
fi

dnl ========================================================
dnl =
dnl = Compiler Options
dnl = 
dnl ========================================================
MOZ_ARG_HEADER(Compiler Options)

MOZ_ARG_ENABLE_BOOL(crash-on-assert,
[  --enable-crash-on-assert
                          Make NS_ASSERTION crash on Unix],
  AC_DEFINE(UNIX_CRASH_ON_ASSERT))

dnl ========================================================
dnl =
dnl = --enable-lea
dnl = 
dnl = Enable Lea malloc in xpcom. OFF by default.
dnl = 
dnl ========================================================

MOZ_ARG_ENABLE_BOOL(lea,
[  --enable-lea            Enable Lea malloc ],
  [ XPCOM_USE_LEA=1
    AC_DEFINE(XPCOM_USE_LEA)] )


dnl ========================================================
dnl =
dnl = --enable-optimize
dnl = 
dnl = Enable code optimization. OFF by default.
dnl = 
dnl ========================================================
MOZ_OPTIMIZE=

if test ! "$MOZ_OPTIMIZE_FLAGS"
then
	MOZ_OPTIMIZE_FLAGS="-O"
fi

MOZ_ARG_ENABLE_STRING(optimize,
[  --enable-optimize(=val) Enable compiler optimizations (val, ie. -O2) ],
    [ if test "$enableval" != "no"; then
	MOZ_OPTIMIZE=1
	if test -n "$enableval" && test "$enableval" != "yes"; then
	    MOZ_OPTIMIZE_FLAGS=`echo $enableval | sed -e 's|\\\ | |g'`
	fi 
    fi ])

if test "$MOZ_OPTIMIZE"
then
  CFLAGS="$CFLAGS $MOZ_OPTIMIZE_FLAGS"
  CXXFLAGS="$CXXFLAGS $MOZ_OPTIMIZE_FLAGS"
fi

dnl ========================================================
dnl =
dnl = --enable-reorder
dnl = 
dnl = Enable function reordering.
dnl = 
dnl = Function reordering is off by default.
dnl = 
dnl ========================================================
MOZ_REORDER=0
MOZ_ARG_ENABLE_STRING(reorder,
[  --enable-reorder Enable function reordering ],
    [ if test "$enableval" != "no"; then
	    MOZ_REORDER=1
      fi ])

dnl ========================================================
dnl =
dnl = --disable-debug
dnl = 
dnl = Disable building with debug info.
dnl = 
dnl = Debugging is ON by default so that we get more useful
dnl = bug reports.
dnl = 
dnl ========================================================
MOZ_DEBUG=1

if test ! "$MOZ_DEBUG_FLAGS"
then
    case "$target" in
    *-*-os2_vacpp)
        MOZ_DEBUG_FLAGS="/Ti+"
        ;;
    *-irix*)
        if test "$GNU_CC"; then
            GCC_VERSION=`$CC -v 2>&1 | awk '/version/ { print $3 }'`
            case "$GCC_VERSION" in
            2.95.*)
                MOZ_DEBUG_FLAGS=""
                ;;
            *)
                MOZ_DEBUG_FLAGS="-g"
                ;;
            esac
        else
            MOZ_DEBUG_FLAGS="-g"
        fi
        ;;
    *)
    	MOZ_DEBUG_FLAGS="-g"
        ;;
    esac
fi

MOZ_ARG_DISABLE_BOOL(debug,
[  --disable-debug         Disable building with debug info],
  MOZ_DEBUG=)

MOZ_DEBUG_ENABLE_DEFS="-DDEBUG"
 case "${target_os}" in
    beos*)
      MOZ_DEBUG_ENABLE_DEFS="$MOZ_DEBUG_ENABLE_DEFS -DDEBUG_${USER}"
        ;;
    *) 
      MOZ_DEBUG_ENABLE_DEFS="$MOZ_DEBUG_ENABLE_DEFS -DDEBUG_`$WHOAMI`"
        ;;
  esac
MOZ_DEBUG_ENABLE_DEFS="$MOZ_DEBUG_ENABLE_DEFS -DTRACING"

MOZ_DEBUG_DISABLE_DEFS="-DNDEBUG -DTRIMMED"

dnl ========================================================
dnl =
dnl = --enable-strip-libs
dnl = 
dnl = Enable stripping of .so and .a libs
dnl = 
dnl ========================================================
if test -z "$MOZ_POST_DSO_LIB_COMMAND"; then
  MOZ_POST_DSO_LIB_COMMAND=true
fi
if test -z "$MOZ_POST_PROGRAM_COMMAND"; then
  MOZ_POST_PROGRAM_COMMAND=true
fi

case "$target" in
*-*-os2*)
    MOZ_POST_DSO_LIB_COMMAND='@echo'
    MOZ_POST_PROGRAM_COMMAND='@echo'
    ;;
esac

MOZ_ARG_ENABLE_BOOL(strip-libs,
[  --enable-strip-libs     Enable stripping of .so and .a libs ],
  [ MOZ_POST_DSO_LIB_COMMAND='$(STRIP)'
    MOZ_POST_PROGRAM_COMMAND='$(STRIP)' ])

dnl ========================================================
dnl =
dnl = MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS
dnl = 
dnl = Flags to strip unused symbols from .so components
dnl = 
dnl = On on Linux non debug builds by default
dnl = 
dnl ========================================================
MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS=

if test ! "$MOZ_DEBUG"
then
    case "$host" in
        *-linux*)
            MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS='-Wl,--version-script,$(BUILD_TOOLS)/gnu-ld-scripts/components-version-script'
        ;;
        *-nto*) 
            MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS='-Wl,--version-script,$(BUILD_TOOLS)/gnu-ld-scripts/components-version-script'
        ;;
    esac
fi
dnl ========================================================

dnl ========================================================
dnl =
dnl = --enable-elf-dynstr-gc
dnl = 
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(elf-dynstr-gc,
[  --enable-elf-dynstr-gc  Enable elf dynstr garbage collector (opt builds only)],
    USE_ELF_DYNSTR_GC=1,
    USE_ELF_DYNSTR_GC= )

AC_SUBST(USE_ELF_DYNSTR_GC)

dnl ========================================================
dnl =
dnl = --with-debug-modules=module1,^module2,etc
dnl = 
dnl = Enable/disable debug for specific modules only
dnl =   module names beginning with ^ will be disabled (this is because you can't
dnl =   pass args to --without-debug-modules)
dnl = 
dnl ========================================================
MOZ_ARG_WITH_STRING(default-mozilla-five-home,
[  --with-default-mozilla-five-home
                          Set the default value for MOZILLA_FIVE_HOME],
  [ val=`echo $withval`
    AC_DEFINE_UNQUOTED(MOZ_DEFAULT_MOZILLA_FIVE_HOME,"$val")
    ])
dnl ========================================================

dnl ========================================================
dnl =
dnl = --with-debug-modules=module1,^module2,etc
dnl = 
dnl = Enable/disable debug for specific modules only
dnl =   module names beginning with ^ will be disabled 
dnl =   (this is because you can't pass args to --without-debug-modules)
dnl = 
dnl ========================================================

MOZ_ARG_WITH_STRING(debug-modules,
[  --with-debug-modules    Enable/disable debug info for specific modules],
  [ MOZ_DEBUG_MODULES=`echo $withval | sed 's/,/ /g'` ] )
dnl ========================================================

dnl ========================================================
dnl =
dnl = --with-dbgrinfo-modules=module1,^module2,etc
dnl = 
dnl = Enable/disable generation of debugger info for specific modules only
dnl =    the special module name ALL_MODULES can be used to denote all modules
dnl =    module names beginning with ^ will be disabled
dnl = 
dnl ========================================================

MOZ_DBGRINFO_MODULES=""

MOZ_ARG_WITH_STRING(dbgrinfo-modules,
[  --with-dbgrinfo-modules Enable/disable debugger info for specific modules],
  [ for i in `echo $withval | sed 's/,/ /g'`; do

      dnl note that the list of module names is reversed as it is copied
      dnl this is important, as it will allow config.mk to interpret stuff like
      dnl "^ALL_MODULES xpcom" properly
      if test "$i" = "no"; then
        i="^ALL_MODULES"
      fi
      if test "$i" = "yes"; then
        i="ALL_MODULES"
      fi
      MOZ_DBGRINFO_MODULES="$i $MOZ_DBGRINFO_MODULES";
    done ])
dnl ========================================================

dnl ========================================================
dnl =
dnl = --enable-crypto
dnl =
dnl = Build Personal Security Manager
dnl =
dnl ========================================================
MOZ_PSM=

MOZ_ARG_ENABLE_BOOL(crypto,
[  --enable-crypto         Enable crypto (Personal Security Manager)],
  MOZ_PSM=1 )

dnl ========================================================
dnl =
dnl = --enable-jsd
dnl =
dnl = JS Debugger XPCOM component (js/jsd)
dnl = 
dnl ========================================================

MOZ_JSDEBUGGER=

MOZ_ARG_ENABLE_BOOL(jsd,
[  --enable-jsd            Enable JavaScript debug library],
   MOZ_JSDEBUGGER=1)

dnl ========================================================
dnl =
dnl = --with-extensions=extension1,extension2,
dnl = 
dnl = Enable compilation of specific extension modules
dnl = 
dnl ========================================================

dnl Need cookie and wallet to build mozilla, this should
dnl not be the case, 18352 has been filed.
dnl http://bugzilla.mozilla.org/show_bug.cgi?id=18352
MOZ_EXTENSIONS_DEFAULT="cookie wallet content-packs xml-rpc xmlextras help transformiix"
MOZ_EXTENSIONS_ALL="$MOZ_EXTENSIONS_DEFAULT irc xmlterm inspector access-builtin venkman" 

MOZ_ARG_WITH_STRING(extensions,
[  --with-extensions       Enable extensions (dirs in extensions/)],
  [ MOZ_EXTENSIONS=""
    for option in `echo $withval | sed 's/,/ /g'`; do
      if test "$option" = "yes" || test "$option" = "all"; then
        MOZ_EXTENSIONS="$MOZ_EXTENSIONS $MOZ_EXTENSIONS_ALL"
      elif test "$option" = "no" || test "$option" = "none"; then
        MOZ_EXTENSIONS=""
      elif test "$option" = "default"; then
        MOZ_EXTENSIONS="$MOZ_EXTENSIONS $MOZ_EXTENSIONS_DEFAULT"
      else
        MOZ_EXTENSIONS="$MOZ_EXTENSIONS $option"
      fi
    done ],
  [ MOZ_EXTENSIONS="$MOZ_EXTENSIONS_DEFAULT" ] )

if test -z "$MOZ_ENABLE_GTK" && test `echo "$MOZ_EXTENSIONS" | grep -c xmlterm` -ne 0; then
    AC_MSG_WARN([Cannot build xmlterm without gtk toolkit. Removing xmlterm from MOZ_EXTENSIONS.])
    MOZ_EXTENSIONS=`echo $MOZ_EXTENSIONS | sed -e 's|xmlterm||'`
fi

if test -z "$MOZ_JSDEBUGGER" && test `echo "$MOZ_EXTENSIONS" | grep -c venkman` -ne 0; then
    AC_MSG_WARN([Cannot build venkman without JavaScript debug library. Removing venkman from MOZ_EXTENSIONS.])
    MOZ_EXTENSIONS=`echo $MOZ_EXTENSIONS | sed -e 's|venkman||'`
fi

dnl Disable jar packaging
MOZ_ARG_DISABLE_BOOL(jar-packaging,
[  --disable-jar-packaging Disable jar packaging of chrome (Deprecated) ],
    MOZ_DISABLE_JAR_PACKAGING=1
)

MOZ_ARG_ENABLE_STRING(chrome-format,
[  --enable-chrome-format=[jar|flat|both]
                          Select format of chrome files (defaults to jar)],
    MOZ_CHROME_FILE_FORMAT=`echo $enableval | tr A-Z a-z`)

if test -z "$MOZ_CHROME_FILE_FORMAT"; then
    if test -n "$MOZ_DISABLE_JAR_PACKAGING"; then
        MOZ_CHROME_FILE_FORMAT=flat
    else
        MOZ_CHROME_FILE_FORMAT=jar
    fi
fi

if test "$MOZ_CHROME_FILE_FORMAT" != "jar" && 
    test "$MOZ_CHROME_FILE_FORMAT" != "flat" &&
    test "$MOZ_CHROME_FILE_FORMAT" != "both"; then
    AC_MSG_ERROR([--enable-chrome-format must be set to either jar, flat or both])
fi

dnl ========================================================
dnl Determine how to handle dependencies
dnl ========================================================
MOZ_AUTO_DEPS=1
MOZ_ARG_DISABLE_BOOL(auto-deps,
[  --disable-auto-deps     Do not automatically generate dependency info],
    MOZ_AUTO_DEPS=)

if test -n "$MOZ_AUTO_DEPS"; then
_cpp_md_flag=
MOZ_ARG_DISABLE_BOOL(md,
[  --disable-md            Do not use compiler-based dependencies ],
  [],
  [_cpp_md_flag=1],
  [dnl Default is to turn on -MD if using GNU-compatible compilers
   if test "$GNU_CC" -a "$GNU_CXX"; then
     _cpp_md_flag=1
   fi])
if test "$_cpp_md_flag"; then
  COMPILER_DEPEND=1
  _DEPEND_CFLAGS='$(filter-out %/.pp,-Wp,-MD,$(MDDEPDIR)/$(*F).pp)'
fi
fi # MOZ_AUTO_DEPS
MDDEPDIR='.deps'
AC_SUBST(MOZ_AUTO_DEPS)
AC_SUBST(COMPILER_DEPEND)
AC_SUBST(MDDEPDIR)


MOZ_ARG_DISABLE_BOOL(pedantic,
[  --disable-pedantic      Issue all warnings demanded by strict ANSI C ],
  _PEDANTIC= )
if test "$_PEDANTIC"; then
    AC_LANG_CPLUSPLUS
    _SAVE_CXXFLAGS=$CXXFLAGS
    CXXFLAGS="$CXXFLAGS ${_WARNINGS_CXXFLAGS} ${_COMPILER_PREFIX}-pedantic"
    AC_MSG_CHECKING([whether C++ compiler has -pedantic long long bug])
    AC_TRY_RUN([ int main () {
                if (sizeof(long long) != 8) { return 1; } 
                    return 0; } ],
        result="no", result="yes", result="maybe" )
    AC_MSG_RESULT([$result])
    CXXFLAGS="$_SAVE_CXXFLAGS"
    AC_LANG_C

    case "$result" in
    no)
        _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} ${_COMPILER_PREFIX}-pedantic"
        _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} ${_COMPILER_PREFIX}-pedantic"
        ;;
    yes)
        AC_MSG_ERROR([Your compiler appears to have a known bug where long long is miscompiled when using -pedantic.  Reconfigure using --disable-pedantic. ])
        ;;
    maybe)
        AC_MSG_WARN([Cannot test -pedantic long long bug when cross-compiling.])
        ;;
    esac
fi

dnl Autoconf test for gcc 2.7.2.x (and maybe others?) so that we don't
dnl provide non-const forms of the operator== for comparing nsCOMPtrs to
dnl raw pointers in nsCOMPtr.h.  (VC++ has the same bug.)

AC_LANG_CPLUSPLUS
_SAVE_CXXFLAGS=$CXXFLAGS
CXXFLAGS="$CXXFLAGS ${_WARNINGS_CXXFLAGS}"

AC_CACHE_CHECK(for correct overload resolution with const and templates,
    ac_nscap_nonconst_opeq_bug,
    [AC_TRY_COMPILE([
                      template <class T>
                      class Pointer
                        {
                        public:
                          T* myPtr;
                        };
                      
                      template <class T, class U>
                      int operator==(const Pointer<T>& rhs, U* lhs)
                        {
                          return rhs.myPtr == lhs;
                        }
                      
                      template <class T, class U>
                      int operator==(const Pointer<T>& rhs, const U* lhs)
                        {
                          return rhs.myPtr == lhs;
                        }
                    ],
                    [
                      Pointer<int> foo;
                      const int* bar;
                      return foo == bar;
                    ],
                    ac_nscap_nonconst_opeq_bug="no",
                    ac_nscap_nonconst_opeq_bug="yes")])

AC_LANG_C
CXXFLAGS="$_SAVE_CXXFLAGS"

if test "$ac_nscap_nonconst_opeq_bug" = "yes" ; then
    AC_DEFINE(NSCAP_DONT_PROVIDE_NONCONST_OPEQ)
fi

dnl pass -Wno-long-long to the compiler
MOZ_ARG_ENABLE_BOOL(long-long-warning,
[  --enable-long-long-warning
                          Pass -Wno-long-long to the compiler],
  _IGNORE_LONG_LONG_WARNINGS=)
if test "$_IGNORE_LONG_LONG_WARNINGS"; then
     _SAVE_CFLAGS="$CFLAGS"
     CFLAGS="$CFLAGS ${_COMPILER_PREFIX}-Wno-long-long"
     AC_MSG_CHECKING([whether compiler supports -Wno-long-long])
     AC_TRY_COMPILE([], [return(0);], 
	[ _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} ${_COMPILER_PREFIX}-Wno-long-long"
	  _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} ${_COMPILER_PREFIX}-Wno-long-long"
	  result="yes" ], result="no")
     AC_MSG_RESULT([$result])
     CFLAGS="$_SAVE_CFLAGS"
fi

dnl C++ rtti (g++/egcs only - for now)
dnl Should be smarter and check that the compiler does indeed have rtti
MOZ_ARG_ENABLE_BOOL(cpp-rtti,
[  --enable-cpp-rtti       Enable C++ RTTI ],
    [ _MOZ_RTTI_FLAGS=-frtti ]
)

dnl C++ exceptions (g++/egcs only - for now)
dnl Should be smarter and check that the compiler does indeed have exceptions
MOZ_ARG_ENABLE_BOOL(cpp-exceptions,
[  --enable-cpp-exceptions Enable C++ exceptions ],
    [ if test "$MIPSPRO_CXX"; then
      _MOZ_EXCEPTIONS_FLAGS=-LANG:exceptions=ON
    else
      _MOZ_EXCEPTIONS_FLAGS=-fexceptions 
    fi
    ]
)

dnl Enable Ultrasparc specific compiler options
MOZ_ARG_ENABLE_BOOL(ultrasparc,
[  --enable-ultrasparc     Enable UltraSPARC specific compiler options ],
    [case "$target_os" in
    solaris*)   
        case $OS_TEST in
        sun4u)
            if test -z "$GNU_CC"; then
                ASFLAGS='-xarch=v8plus -DULTRA_SPARC -P -L -D_ASM -D__STDC__=0 -K PIC'
                AC_DEFINE(ULTRA_SPARC)
            else
                CFLAGS="${CFLAGS} -Wa,-xarch=v8plus,-DULTRA_SPARC,-P,-L,-D_ASM,-D__STDC__=0"
                CXXFLAGS="${CXXFLAGS} -Wa,-xarch=v8plus,-DULTRA_SPARC,-P,-L,-D_ASM,-D__STDC__=0,-K,PIC"
                AC_DEFINE(ULTRA_SPARC)
            fi
            ;;
        esac
        ;;
    esac
])

dnl ========================================================
dnl =
dnl = Profiling and Instrumenting
dnl = 
dnl ========================================================
MOZ_ARG_HEADER(Profiling and Instrumenting)

MOZ_ARG_ENABLE_BOOL(eazel-profiler,
[  --enable-eazel-profiler Enable Corel/Eazel profiler],
  [  ENABLE_EAZEL_PROFILER=1
     AC_DEFINE(ENABLE_EAZEL_PROFILER)
     USE_ELF_DYNSTR_GC=
     MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS=
     EAZEL_PROFILER_CFLAGS="-g -O -gdwarf-2 -finstrument-functions -D__NO_STRING_INLINES  -D__NO_MATH_INLINES"
     EAZEL_PROFILER_LIBS="-lprofiler -lpthread"])

MOZ_ARG_WITH_STRING(profile-modules,
[  --with-profile-modules  Enable/disable profiling for specific modules],
  [ MOZ_PROFILE_MODULES=`echo $withval | sed 's/,/ /g'` ] )
dnl ========================================================
dnl ========================================================

dnl Enable performance metrics.
MOZ_ARG_ENABLE_BOOL(perf-metrics,
[  --enable-perf-metrics   Enable performance metrics],
  MOZ_PERF_METRICS=1
  AC_DEFINE(MOZ_PERF_METRICS))

MOZ_ARG_ENABLE_BOOL(insure,
[  --enable-insure         Enable insure++ instrumentation (linux only)],
  [ MOZ_INSURE="insure" MOZ_INSURIFYING=1 MOZ_INSURE_DIRS="." MOZ_INSURE_EXCLUDE_DIRS="config" ])

MOZ_ARG_WITH_STRING(insure-dirs,
[  --with-insure-dirs=\$dirs
                          Dirs to instrument with insure ],
  MOZ_INSURE_DIRS=$withval )

MOZ_ARG_WITH_STRING(insure-exclude-dirs,
[  --with-insure-exclude-dirs=\$dirs
                          Dirs to not instrument with insure ],
  MOZ_INSURE_EXCLUDE_DIRS="config $withval" )

MOZ_ARG_ENABLE_BOOL(boehm,
[  --enable-boehm          Enable the Boehm Garbage Collector],
  AC_DEFINE(GC_LEAK_DETECTOR)
  GC_LEAK_DETECTOR=1
)

dnl This will enable logging of addref, release, ctor, dtor.
MOZ_ARG_ENABLE_BOOL(logrefcnt,
[  --enable-logrefcnt      Enable Logging of refcounts (default=debug) ],
	AC_DEFINE(FORCE_BUILD_REFCNT_LOGGING),
	AC_DEFINE(NO_BUILD_REFCNT_LOGGING))


dnl mozilla/tools/leaky not part of default build.
MOZ_ARG_ENABLE_BOOL(leaky,
[  --enable-leaky          Enable leaky memory tool],
  MOZ_LEAKY=1)

dnl mozilla/tools/leaky not part of default build.
MOZ_ARG_ENABLE_BOOL(jprof,
[  --enable-jprof          Enable jprof profiling tool (pull tools/jprof)],
  MOZ_JPROF=1
  AC_DEFINE(MOZ_JPROF))

dnl mozilla/js/src/xpconnect/tools is not part of default build.
MOZ_ARG_ENABLE_BOOL(xpctools,
[  --enable-xpctools       Build JS profiling tool],
  MOZ_XPCTOOLS=1)

AC_MSG_CHECKING(webshell leaks option)
MOZ_ARG_ENABLE_BOOL(detect-webshell-leaks,
[  --enable-detect-webshell-leaks
                          Enable detection of webshell leaks 
                          (default=yes, unless --disable-debug is used)],
  [ AC_MSG_RESULT(on (user enabled))
    DETECT_WEBSHELL_LEAKS=1 ],
  [ AC_MSG_RESULT(off (user disabled)) ],
  [ if test "$MOZ_DEBUG"; then
      AC_MSG_RESULT(on (debug build))
      DETECT_WEBSHELL_LEAKS=1 
    else
      AC_MSG_RESULT(off (non-debug build))
    fi])

if test "$DETECT_WEBSHELL_LEAKS"; then
  AC_DEFINE(DETECT_WEBSHELL_LEAKS) 
  AC_SUBST(DETECT_WEBSHELL_LEAKS)
fi

MOZ_ARG_DISABLE_BOOL(double-buffer,
[  --disable-double-buffer Disable double buffering],
  AC_DEFINE(NO_DOUBLE_BUFFER))

MOZ_ARG_ENABLE_BOOL(wrap-malloc,
[  --enable-wrap-malloc    Wrap malloc calls (gnu linker only)],
  [ if test "$GNU_CC"; then
      WRAP_MALLOC_CFLAGS="${LDFLAGS} -Wl,--wrap -Wl,malloc -Wl,--wrap -Wl,free -Wl,--wrap -Wl,realloc -Wl,--wrap -Wl,__builtin_new -Wl,--wrap -Wl,__builtin_vec_new -Wl,--wrap -Wl,__builtin_delete -Wl,--wrap -Wl,__builtin_vec_delete -Wl,--wrap -Wl,PR_Free -Wl,--wrap -Wl,PR_Malloc -Wl,--wrap -Wl,PR_Calloc -Wl,--wrap -Wl,PR_Realloc"
      MKSHLIB='$(CXX) $(DSO_LDOPTS) $(WRAP_MALLOC_CFLAGS) -o $@'
    fi])

MOZ_ARG_WITH_STRING(wrap-malloc,
[  --with-wrap-malloc=\$dir Location of malloc wrapper library],
  WRAP_MALLOC_LIB=$withval)

MOZ_ARG_ENABLE_BOOL(efence,
[  --enable-efence         Link with Electric Fence],
  AC_CHECK_LIB(efence,malloc))

dnl ========================================================
dnl =
dnl = MOZ_DEMANGLE_UNDEFINED_SYMBOLS
dnl =
dnl = Support for demangling undefined symbols
dnl = 
dnl ========================================================
AC_CHECK_LIB(iberty, cplus_demangle, [HAVE_DEMANGLE=1],
             HAVE_DEMANGLE=, "-liberty")

MOZ_DEMANGLE_SYMBOLS=

if test "$HAVE_DEMANGLE"
then
  case "$target" in
    *-linux*)
        # Demangle only for debug or trace-malloc builds
        if test "$MOZ_DEBUG" || test "$NS_TRACE_MALLOC"
        then
            MOZ_DEMANGLE_SYMBOLS=1
            AC_DEFINE(MOZ_DEMANGLE_SYMBOLS)
        fi
	;;
    *-solaris*)
        # Demangle only for debug builds which are using the Gnu compiler.
        if test "$GNU_CC"
        then
            if test "$MOZ_DEBUG"
            then
                MOZ_DEMANGLE_SYMBOLS=1
                AC_DEFINE(MOZ_DEMANGLE_SYMBOLS)
            fi
        fi
    ;;
  esac
fi

AC_SUBST(MOZ_DEMANGLE_SYMBOLS)

dnl ========================================================
dnl =
dnl = End MOZ_DEMANGLE_SYMBOLS
dnl = 
dnl ========================================================



dnl ========================================================
dnl =
dnl = Misc. Options
dnl = 
dnl ========================================================
MOZ_ARG_HEADER(Misc. Options)

MOZ_ARG_ENABLE_STRING(homedir,
[  --enable-homedir=\$val   Set the homedir to \$val],
dnl [ Location of the mozilla user directory (default is ~/.mozilla).],
  [if echo "$enableval" | grep "\/" >/dev/null; then
    AC_MSG_ERROR("Homedir must be single relative path.")
  else 
    AC_DEFINE_UNQUOTED(MOZ_USER_DIR,"$enableval")
  fi], 
  AC_DEFINE(MOZ_USER_DIR,".mozilla") )

MOZ_ARG_ENABLE_BOOL(idltool,
[  --enable-idlc           Build idl tool ],
  BUILD_IDLC=1)

MOZ_ARG_ENABLE_BOOL(xterm-updates,
[  --enable-xterm-updates  Update XTERM titles with current command.],
  MOZ_UPDATE_XTERM=1)

dnl
dnl By default, we will now build with LDAP support, which you can
dnl turn off with the --disable-ldap option. We also added the
dnl ldap-experimental flag, which is for experimental LDAP code,
dnl not currently turned on in the default build.
dnl
if test "$BUILD_MODULES" = "all" || test `echo "$BUILD_MODULES" | grep -c ldap` -ne 0; then
    MOZ_LDAP_XPCOM=1
fi

dnl
dnl --disable-ldap
dnl
MOZ_ARG_DISABLE_BOOL(ldap,
[  --disable-ldap          Disable LDAP support],
  MOZ_LDAP_XPCOM=
    )

dnl --enable-ldap-experimental
dnl
MOZ_ARG_ENABLE_BOOL(ldap-experimental,
[  --enable-ldap-experimental
                          Enable LDAP experimental features],
  MOZ_LDAP_XPCOM_EXPERIMENTAL=1
    )

dnl --disable-xul
dnl
MOZ_XUL=1
MOZ_ARG_DISABLE_BOOL(xul,
[  --disable-xul           Disable XUL ],
  MOZ_XUL= )
if test "$MOZ_XUL"; then
  AC_DEFINE(MOZ_XUL)
  AC_DEFINE(INCLUDE_XUL)
fi
AC_SUBST(MOZ_XUL)
AC_SUBST(INCLUDE_XUL)

dnl --enable mathml
dnl TODO: handle include files here ?
dnl
MOZ_ARG_ENABLE_BOOL(mathml,
[  --enable-mathml         Enable MathML ],
  MOZ_MATHML=1
  AC_DEFINE(MOZ_MATHML))

dnl
dnl --enable svg
dnl TODO: handle include files here ?
dnl
MOZ_ARG_ENABLE_BOOL(svg,
[  --enable-svg            Enable SVG ],
  MOZ_SVG=1
  AC_DEFINE(MOZ_SVG))

dnl To build transformiix standalone, set TX_EXE while configuring
if test "$TX_EXE"; then
  AC_DEFINE(TX_EXE)
fi

dnl Need the contents of config-defs.h in the build logs
VERBOSE_CONFIG_DEFS=1
AC_ARG_ENABLE(verbose-config-defs,
[  --disable-verbose-config-defs
                          Do not output the contents of config-defs.h],
   [if test "$enableval" = "no"; then
	VERBOSE_CONFIG_DEFS=
    fi])

dnl New cache is now enabled by default.
MOZ_NEW_CACHE=1
dnl The new cache may be optionally disabled in favor of the old cache
dnl for performance testing.
MOZ_ARG_DISABLE_BOOL(new-cache,
[  --disable-new-cache     Disable new cache],
   MOZ_NEW_CACHE=0)
if test "$MOZ_NEW_CACHE" = "1"; then
  AC_DEFINE(MOZ_NEW_CACHE)
fi
AC_SUBST(MOZ_NEW_CACHE)

dnl libpr0n on by default
USE_IMG2=1
dnl Turn off the new image library.  Soon to go away.
MOZ_ARG_DISABLE_BOOL(libpr0n,
[  --disable-libpr0n       Disable new imagelib],
   USE_IMG2=)
if test "$USE_IMG2" = "1"; then
  AC_DEFINE(USE_IMG2)
fi
AC_SUBST(USE_IMG2)

dnl ========================================================
dnl =
dnl = --diable-dtd-debug
dnl =
dnl = Disable some DTD debugging code in the parser that 
dnl = breaks on some compilers because of evil and broken 
dnl = streams code in htmlparser/src/prstrm.cpp
dnl =
dnl ========================================================
MOZ_DISABLE_DTD_DEBUG=

MOZ_ARG_DISABLE_BOOL(dtd-debug,
[  --disable-dtd-debug     Disable some DTD debuggin code in the parser)],
  MOZ_DISABLE_DTD_DEBUG=1 
  AC_DEFINE(MOZ_DISABLE_DTD_DEBUG) )

dnl ========================================================
dnl =
dnl = OS/2 Build Options
dnl = 
dnl ========================================================
MOZ_ARG_HEADER(OS/2 Build Options)

MOZ_ARG_WITH_STRING(os2emx,
[  --with-os2emx=\$val      Build for OS/2 with emx+gcc, set to OMF or A.OUT],
    [ MOZ_OS2_TOOLS=EMX
      MOZ_OS2_EMX_OBJECTFORMAT="$withval"
      AC_DEFINE(XP_OS2_EMX) ])

MOZ_ARG_WITH_STRING(os2vacpp,
[  --with-os2vacpp         Build for OS/2 with VAC++],
    [ MOZ_OS2_TOOLS=VACPP
      AC_DEFINE(XP_OS2_VACPP) ])

dnl ========================================================
dnl =
dnl = End OS/2 Build Options
dnl =
dnl ========================================================

BUILD_SHARED_LIBS=1
BUILD_STATIC_LIBS=
MOZ_STATIC_COMPONENT_LIBS=

MOZ_ARG_DISABLE_BOOL(shared,
[  --disable-shared        Disable building of internal shared libs],
    BUILD_SHARED_LIBS=)

MOZ_ARG_ENABLE_BOOL(static,
[  --enable-static         Enable building of internal static libs],
    BUILD_STATIC_LIBS=1
    MOZ_STATIC_COMPONENT_LIBS=1)

if (test -z "$BUILD_SHARED_LIBS" && test -z "$BUILD_STATIC_LIBS") ||
    (test -n "$BUILD_SHARED_LIBS" && test -n "$BUILD_STATIC_LIBS") ; then
    AC_MSG_ERROR([Only one of --enable-shared or --enable-static must be specified.])
fi

dnl ========================================================

MOZ_ARG_ENABLE_STRING(static-components,
[  --enable-static-components
                          Build meta-component from specific components],
  [ MOZ_STATIC_COMPONENTS=`echo $enableval | sed 's/,/ /g'` ] )

dnl ========================================================
dnl Enable the use of predefined meta components
dnl ========================================================

MOZ_ARG_ENABLE_STRING(meta-components,
[  --enable-meta-components
                          Build predefined meta-components],
  [ MOZ_META_COMPONENTS=`echo $enableval | sed 's/,/ /g'` ] )

if test -n "$MOZ_STATIC_COMPONENTS" && test -n "$MOZ_META_COMPONENTS"; then
    AC_MSG_ERROR([Simultaneous use of static-components & meta-components is not supported.])
fi

dnl ========================================================

case "$target" in
    *-*-aix*)
	if test -z "${BUILD_STATIC_LIBS}" -o -n "${BUILD_SHARED_LIBS}"; then
	    if test -f /usr/lpp/xlC/bin/makeC++SharedLib_r; then
		AIX_SHLIB_BIN='/usr/lpp/xlC/bin/makeC++SharedLib_r'
	    elif test -f /usr/ibmcxx/bin/makeC++SharedLib_r; then
		AIX_SHLIB_BIN='/usr/ibmcxx/bin/makeC++SharedLib_r'
	    fi
	    AC_PATH_PROG(AIX_SHLIB_BIN, makeC++SharedLib_r, :)
	    if test ! -n "$AIX_SHLIB_BIN"; then
		echo
		echo "*** Unable to locate makeC++SharedLib_r, needed for creation of shared"
		echo "*** libraries on AIX.  You will only be able to build static libraries."
		echo
		BUILD_STATIC_LIBS=1
		BUILD_SHARED_LIBS=
	    fi
	fi
	AC_SUBST(AIX_SHLIB_BIN)
	;;
esac

dnl ========================================================
dnl =
dnl = Maintainer debug option (no --enable equivalent)
dnl =
dnl ========================================================
AC_SUBST(MOZ_TRACK_MODULE_DEPS)

AC_SUBST(AR)
AC_SUBST(AR_FLAGS)
AC_SUBST(AR_LIST)
AC_SUBST(AR_EXTRACT)
AC_SUBST(AR_DELETE)
AC_SUBST(AS)
AC_SUBST(ASFLAGS)
AC_SUBST(AS_DASH_C_FLAG)
AC_SUBST(LD)
AC_SUBST(DLLTOOL)
AC_SUBST(WINDRES)
AC_SUBST(USE_SHORT_LIBNAME)
AC_SUBST(IMPLIB)
AC_SUBST(FILTER)
AC_SUBST(BIN_FLAGS)
AC_SUBST(NS_USE_NATIVE)
AC_SUBST(MOZ_WIDGET_TOOLKIT)
AC_SUBST(MOZ_WIDGET_TOOLKIT_LDFLAGS)
AC_SUBST(WIDGET_DLL)
AC_SUBST(GFXWIN_DLL)
AC_SUBST(MOZ_GFX_TOOLKIT)
AC_SUBST(MOZ_GFX_TOOLKIT_LDFLAGS)
AC_SUBST(MOZ_UPDATE_XTERM)
AC_SUBST(MOZ_MATHML)
AC_SUBST(MOZ_SVG)
AC_SUBST(TX_EXE)
AC_SUBST(MOZ_MONOLITHIC_TOOLKIT)
AC_SUBST(MOZ_JS_LIBS)
AC_SUBST(MOZ_PSM)
AC_SUBST(BUILD_MODULES)
AC_SUBST(MOZ_DEBUG)
AC_SUBST(MOZ_DEBUG_MODULES)
AC_SUBST(MOZ_PROFILE_MODULES)
AC_SUBST(MOZ_DEBUG_ENABLE_DEFS)
AC_SUBST(MOZ_DEBUG_DISABLE_DEFS)
AC_SUBST(MOZ_DEBUG_FLAGS)
AC_SUBST(MOZ_DBGRINFO_MODULES)
AC_SUBST(MOZ_EXTENSIONS)
AC_SUBST(MOZ_JSDEBUGGER)
AC_SUBST(ENABLE_EAZEL_PROFILER)
AC_SUBST(EAZEL_PROFILER_CFLAGS)
AC_SUBST(EAZEL_PROFILER_LIBS)
AC_SUBST(MOZ_PERF_METRICS)
AC_SUBST(GC_LEAK_DETECTOR)
AC_SUBST(MOZ_LOG_REFCNT)
AC_SUBST(MOZ_LEAKY)
AC_SUBST(MOZ_JPROF)
AC_SUBST(MOZ_XPCTOOLS)
AC_SUBST(MOZ_INSURE)
AC_SUBST(MOZ_INSURE_DIRS)
AC_SUBST(MOZ_INSURE_EXCLUDE_DIRS)
AC_SUBST(MOZ_INSURIFYING)
AC_SUBST(MOZ_BUILD_XPFE)
AC_SUBST(MOZ_LDAP_XPCOM)
AC_SUBST(MOZ_LDAP_XPCOM_EXPERIMENTAL)

AC_SUBST(XPCOM_USE_LEA)
AC_SUBST(UNIX_CRASH_ON_ASSERT)
AC_SUBST(NO_UNIX_ASYNC_DNS)
AC_SUBST(BUILD_SHARED_LIBS)
AC_SUBST(BUILD_STATIC_LIBS)
AC_SUBST(MOZ_STATIC_COMPONENT_LIBS)
AC_SUBST(MOZ_STATIC_COMPONENTS)
AC_SUBST(MOZ_META_COMPONENTS)
AC_SUBST(ENABLE_TESTS)
AC_SUBST(IBMBIDI)
AC_SUBST(MOZ_USER_DIR)
AC_SUBST(BUILD_IDLC)

AC_SUBST(MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS)
AC_SUBST(MOZ_COMPONENT_NSPR_LIBS)
AC_SUBST(MOZ_COMPONENT_XPCOM_LIBS)
AC_SUBST(XPCOM_LIBS)

AC_SUBST(MOZ_GLE)

AC_SUBST(MOZ_BUILD_ROOT)
AC_SUBST(MOZ_OS2_TOOLS)
AC_SUBST(MOZ_OS2_EMX_OBJECTFORMAT)

AC_SUBST(MOZ_POST_DSO_LIB_COMMAND)
AC_SUBST(MOZ_POST_PROGRAM_COMMAND)
AC_SUBST(MOZ_REORDER)

dnl system JPEG support
dnl ========================================================
AC_ARG_WITH(jpeg,
[  --with-jpeg[=\$dir]      Use system libjpeg [installed at prefix \$dir]],
	JPEG_DIR=$withval)

_SAVE_CFLAGS=$CFLAGS
_SAVE_LDFLAGS=$LDFLAGS
_SAVE_LIBS=$LIBS
CFLAGS="-I${JPEG_DIR}/include $CFLAGS"
LDFLAGS="-L${JPEG_DIR}/lib $LDFLAGS"
if test "$JPEG_DIR" = no; then
    SYSTEM_JPEG=
else
    AC_CHECK_LIB(jpeg, jpeg_destroy_compress, [SYSTEM_JPEG=1 JPEG_LIBS="-ljpeg $JPEG_LIBS"], SYSTEM_JPEG=, $JPEG_LIBS)
fi

if test "$SYSTEM_JPEG" = 1; then
    LIBS="$JPEG_LIBS $LIBS"
    AC_TRY_RUN( 
	#include <stdio.h>
	#include <sys/types.h>
	#include <jpeglib.h>
	int main () {
	    #if JPEG_LIB_VERSION >= $MOZJPEG
		exit(0);
	    #else
		exit(1);
	    #endif
	}
	, SYSTEM_JPEG=1, [SYSTEM_JPEG= JPEG_CFLAGS= JPEG_LIBS=], SYSTEM_JPEG= ) 
    rm -f core
fi 
CFLAGS=$_SAVE_CFLAGS
LDFLAGS=$_SAVE_LDFLAGS
LIBS=$_SAVE_LIBS

if test -n "${JPEG_DIR}" -a -d "${JPEG_DIR}" -a "$SYSTEM_JPEG" = 1; then
    JPEG_CFLAGS="-I${JPEG_DIR}/include"
    JPEG_LIBS="-L${JPEG_DIR}/lib ${JPEG_LIBS}"
fi

dnl system ZLIB support
dnl ========================================================
AC_ARG_WITH(zlib,
[  --with-zlib[=\$dir]      Use system libz [installed at prefix \$dir]],
	ZLIB_DIR=$withval)

_SAVE_CFLAGS=$CFLAGS
_SAVE_LDFLAGS=$LDFLAGS
CFLAGS="-I${ZLIB_DIR}/include $CFLAGS"
LDFLAGS="-L${ZLIB_DIR}/lib $LDFLAGS"
if test "$ZLIB_DIR" = no; then
    SYSTEM_ZLIB=
else
    AC_MSG_CHECKING("for zlib.h")
    AC_TRY_COMPILE([#include "zlib.h"], [], 
	[result="yes" SYSTEM_ZLIB=1],
	[result="no" SYSTEM_ZLIB=])
    AC_MSG_RESULT("$result")
fi
if test "$SYSTEM_ZLIB" = 1; then
    AC_CHECK_LIB(z, gzread, [SYSTEM_ZLIB=1 ZLIB_LIBS="-lz $ZLIB_LIBS"], 
	[SYSTEM_ZLIB= ZLIB_CFLAGS= ZLIB_LIBS=], $ZLIB_LIBS)
fi
CFLAGS=$_SAVE_CFLAGS
LDFLAGS=$_SAVE_LDFLAGS

if test "${ZLIB_DIR}" -a -d "${ZLIB_DIR}" -a "$SYSTEM_ZLIB" = 1; then
    ZLIB_CFLAGS="-I${ZLIB_DIR}/include"
    ZLIB_LIBS="-L${ZLIB_DIR}/lib ${ZLIB_LIBS}"
fi

dnl system PNG Support
dnl ========================================================
AC_ARG_WITH(png, 
[  --with-png[=\$dir]       Use system libpng [installed at prefix \$dir]],
        PNG_DIR=$withval)

_SAVE_CFLAGS=$CFLAGS
_SAVE_LDFLAGS=$LDFLAGS
_SAVE_LIBS=$LIBS
CFLAGS="-I${PNG_DIR}/include $ZLIB_CFLAGS $CFLAGS"
LDFLAGS="-L${PNG_DIR}/lib $ZLIB_LIBS -lz $LDFLAGS"
if test "$PNG_DIR" = no; then
    SYSTEM_PNG=
else
    AC_CHECK_LIB(png, png_get_valid, [SYSTEM_PNG=1 PNG_LIBS="-lpng $PNG_LIBS"],
                 SYSTEM_PNG=, $PNG_LIBS)
fi
if test "$SYSTEM_PNG" = 1; then
    LIBS="$PNG_LIBS $LIBS"
    AC_TRY_RUN(
	#include <stdio.h>
	#include <sys/types.h>
	#include <png.h>
	int main () {
	    #if PNG_LIBPNG_VER >= $MOZPNG
		exit(0);
	    #else
		exit(1);
	    #endif
	}
	, SYSTEM_PNG=1, [SYSTEM_PNG= PNG_CFLAGS= PNG_LIBS=], SYSTEM_PNG= ) 
    rm -f core
fi
CFLAGS=$_SAVE_CFLAGS
LDFLAGS=$_SAVE_LDFLAGS
LIBS=$_SAVE_LIBS

if test "${PNG_DIR}" -a -d "${PNG_DIR}" -a "$SYSTEM_PNG" = 1; then
    PNG_CFLAGS="-I${PNG_DIR}/include"
    PNG_LIBS="-L${PNG_DIR}/lib ${PNG_LIBS}"
fi

dnl system MNG Support
dnl ========================================================
AC_ARG_WITH(mng, 
[  --with-mng[=\$dir]       Use system libmng [installed at prefix \$dir]],
        MNG_DIR=$withval)

_SAVE_CFLAGS=$CFLAGS
_SAVE_LDFLAGS=$LDFLAGS
_SAVE_LIBS=$LIBS
CFLAGS="-I${MNG_DIR}/include $ZLIB_CFLAGS $CFLAGS"
LDFLAGS="-L${MNG_DIR}/lib $ZLIB_LIBS -lz $LDFLAGS"
if test "$MNG_DIR" = no; then
    SYSTEM_MNG=
else
    AC_CHECK_LIB(mng, mng_initialize, [SYSTEM_MNG=1 MNG_LIBS="-lmng $MNG_LIBS"],
                 SYSTEM_MNG=, $MNG_LIBS)
fi
if test "$SYSTEM_MNG" = 1; then
    LIBS="$MNG_LIBS $LIBS"
    AC_TRY_RUN(
	#include <stdio.h>
	#include <sys/types.h>
	#include <libmng.h>
	int main () {
	    #if (((MNG_VERSION_MAJOR)<<16)|((MNG_VERSION_MINOR)<<8)|(MNG_VERSION_RELEASE)) >= $MOZMNG
		exit(0);
	    #else
		exit(1);
	    #endif
	}
	, SYSTEM_MNG=1, [SYSTEM_MNG= MNG_CFLAGS= MNG_LIBS=], SYSTEM_MNG= ) 
    rm -f core
fi
CFLAGS=$_SAVE_CFLAGS
LDFLAGS=$_SAVE_LDFLAGS
LIBS=$_SAVE_LIBS

if test "${MNG_DIR}" -a -d "${MNG_DIR}" -a "$SYSTEM_MNG" = 1; then
    MNG_CFLAGS="-I${MNG_DIR}/include"
    MNG_LIBS="-L${MNG_DIR}/lib ${MNG_LIBS}"
fi

dnl Disable profile at startup, hack for tinderbox.
if test "$MOZ_BYPASS_PROFILE_AT_STARTUP"; then
  AC_DEFINE(MOZ_BYPASS_PROFILE_AT_STARTUP)
fi

dnl system FullCircle/Talkback support (Crash-reporting mechanism)
dnl ==============================================================

MOZ_FULLCIRCLE=
FULLCIRCLE_LIBS=
MOZ_ARG_ENABLE_BOOL(fullcircle,
[  --enable-fullcircle     Enable FullCircle/Talkback support],
[ MOZ_FULLCIRCLE=1 FULLCIRCLE_LIBS="-lfullsoft" ])

AC_ARG_WITH(fullcircle,
[  --with-fullcircle=\$dir  Location of FullCircle headers and libraries],
        FULLCIRCLE_DIR=$withval,
        FULLCIRCLE_DIR=no)

if test "$FULLCIRCLE_DIR" = no; then
    FULLCIRCLE_DIR=
else

_SAVE_CFLAGS=$CFLAGS
_SAVE_LDFLAGS=$LDFLAGS
_SAVE_LIBS=$LIBS
CFLAGS="$CFLAGS -I${FULLCIRCLE_DIR}"
LDFLAGS="$LDFLAGS -L${FULLCIRCLE_DIR}"
LIBS="-lfullsoft $LIBS"
AC_MSG_CHECKING("for FCInitialize in -lfullsoft");
AC_TRY_LINK([ #include <stdio.h>
	      #include "fullsoft.h" ],
            [ FCInitialize(); exit(0); ],
            [FULLCIRCLE_LIBS="-I${FULLCIRCLE_DIR} -L${FULLCIRCLE_DIR} -lfullsoft" result="yes"],
            [MISSING_FULLCIRCLE=1 result="no"])
AC_MSG_RESULT("$result")
CFLAGS=$_SAVE_CFLAGS
LDFLAGS=$_SAVE_LDFLAGS
LIBS=$_SAVE_LIBS

if test "$MISSING_FULLCIRCLE"; then
    echo
    echo "Could not find FullCircle library -- ignoring it"
    echo
    MOZ_FULLCIRCLE=
    FULLCIRCLE_LIBS=
else
    AC_DEFINE(MOZ_FULLCIRCLE)
    CFLAGS="$CFLAGS -I${FULLCIRCLE_DIR}"
    CXXFLAGS="$CXXFLAGS -I${FULLCIRCLE_DIR}"
fi

fi

AC_SUBST(MOZ_FULLCIRCLE)
AC_SUBST(FULLCIRCLE_LIBS)

dnl Echo the CFLAGS to remove extra whitespace.
CFLAGS=`echo \
	$_WARNINGS_CFLAGS \
	$CFLAGS`

CXXFLAGS=`echo \
	$_MOZ_RTTI_FLAGS \
	$_MOZ_EXCEPTIONS_FLAGS \
	$_WARNINGS_CXXFLAGS \
	$CXXFLAGS`

COMPILE_CFLAGS=`echo \
    $_DEFINES_CFLAGS \
	$_DEPEND_CFLAGS \
    $COMPILE_CFLAGS`

COMPILE_CXXFLAGS=`echo \
    $_DEFINES_CXXFLAGS \
	$_DEPEND_CFLAGS \
    $COMPILE_CXXFLAGS`

dnl 
dnl It is perfectly legal to build with both -O and -g even though
dnl some compilers/platforms might not support this.
dnl 

dnl # Clean out '-O' flags if doing a debug build.
dnl if test "$MOZ_DEBUG"
dnl then
dnl   changequote(,)dnl
dnl   CFLAGS=`  echo $CFLAGS   | sed 's/ *-O[^ ]*//g;'`
dnl   CXXFLAGS=`echo $CXXFLAGS | sed 's/ *-O[^ ]*//g;'`
dnl   LDFLAGS=`echo  $LDFLAGS  | sed 's/ *-O[^ ]*//g;'`
dnl   changequote([,])dnl
dnl fi

AC_SUBST(SYSTEM_MAKEDEPEND)
AC_SUBST(SYSTEM_JPEG)
AC_SUBST(SYSTEM_PNG)
AC_SUBST(SYSTEM_MNG)
AC_SUBST(SYSTEM_ZLIB)

AC_SUBST(JPEG_CFLAGS)
AC_SUBST(JPEG_LIBS)
AC_SUBST(ZLIB_CFLAGS)
AC_SUBST(ZLIB_LIBS)
AC_SUBST(PNG_CFLAGS)
AC_SUBST(PNG_LIBS)
AC_SUBST(MNG_CFLAGS)
AC_SUBST(MNG_LIBS)

AC_SUBST(MOZ_JPEG_CFLAGS)
AC_SUBST(MOZ_JPEG_LIBS)
AC_SUBST(MOZ_ZLIB_CFLAGS)
AC_SUBST(MOZ_ZLIB_LIBS)
AC_SUBST(MOZ_PNG_CFLAGS)
AC_SUBST(MOZ_PNG_LIBS)
AC_SUBST(MOZ_MNG_CFLAGS)
AC_SUBST(MOZ_MNG_LIBS)

AC_SUBST(NSPR_CFLAGS)
AC_SUBST(NSPR_LIBS)
AC_SUBST(MOZ_NATIVE_NSPR)

AC_SUBST(CFLAGS)
AC_SUBST(CXXFLAGS)
AC_SUBST(CPPFLAGS)
AC_SUBST(COMPILE_CFLAGS)
AC_SUBST(COMPILE_CXXFLAGS)
AC_SUBST(LDFLAGS)
AC_SUBST(LIBS)
AC_SUBST(CROSS_COMPILE)

AC_SUBST(HOST_CC)
AC_SUBST(HOST_CXX)
AC_SUBST(HOST_CFLAGS)
AC_SUBST(HOST_CXXFLAGS)

AC_SUBST(HOST_AR)
AC_SUBST(HOST_RANLIB)
AC_SUBST(HOST_NSPR_MDCPUCFG)

AC_SUBST(HOST_LIBIDL_CONFIG)
AC_SUBST(HOST_LIBIDL_CFLAGS)
AC_SUBST(HOST_LIBIDL_LIBS)

AC_SUBST(TARGET_CPU)
AC_SUBST(TARGET_OS)
AC_SUBST(TARGET_NSPR_MDCPUCFG)
AC_SUBST(TARGET_MD_ARCH)
AC_SUBST(OS_TARGET)
AC_SUBST(OS_ARCH)
AC_SUBST(OS_RELEASE)
AC_SUBST(OS_TEST)

AC_SUBST(MOZ_DISABLE_DTD_DEBUG)
AC_SUBST(MOZ_DISABLE_JAR_PACKAGING)
AC_SUBST(MOZ_CHROME_FILE_FORMAT)

AC_SUBST(WRAP_MALLOC_CFLAGS)
AC_SUBST(WRAP_MALLOC_LIB)
AC_SUBST(MKSHLIB)
AC_SUBST(MKCSHLIB)
AC_SUBST(MKSHLIB_FORCE_ALL)
AC_SUBST(MKSHLIB_UNFORCE_ALL)
AC_SUBST(DSO_CFLAGS)
AC_SUBST(DSO_PIC_CFLAGS)
AC_SUBST(DSO_LDOPTS)
AC_SUBST(DLL_SUFFIX)
AC_DEFINE_UNQUOTED(MOZ_DLL_SUFFIX, "$DLL_SUFFIX")
AC_SUBST(LIB_SUFFIX)
AC_SUBST(OBJ_SUFFIX)
AC_SUBST(BIN_SUFFIX)
AC_SUBST(USE_N32)
AC_SUBST(MOZ_NSS_AUTOCONF)

if test "$USING_HCC"; then
   CC='${topsrcdir}/build/hcc'
   CC="$CC '$_OLDCC'"
   CXX='${topsrcdir}/build/hcpp'
   CXX="$CXX '$_OLDCXX'"
   AC_SUBST(CC)
   AC_SUBST(CXX)
fi

dnl Check for missing components
if test "$no_x" != "yes"; then
if test ! -z "$MISSING_X"; then
   AC_MSG_ERROR([ Could not find the following X libraries: $MISSING_X ]);
fi

if test ! -z "$MISSING_MOTIF"; then
   AC_MSG_ERROR([ Could not find the following Motif libraries: $MISSING_MOTIF ]);
fi
fi # $no_x

dnl Set various defines and substitutions
dnl ========================================================

if test "$OS_TARGET" = "OS2"; then
  AC_DEFINE(XP_PC)
  AC_DEFINE(XP_OS2)
  AC_DEFINE(BSD_SELECT)
  AC_DEFINE(XP_OS2_FIX)
  case "$target" in
    *-*-os2_vacpp)
        LIBS='so32dll.lib tcp32dll.lib'
        ;;
  esac
elif test "$OS_TARGET" = "WINNT"; then
  AC_DEFINE(XP_PC)
elif test "$OS_TARGET" = "BeOS"; then
  AC_DEFINE(XP_BEOS)
  AC_DEFINE(HAVE_MOVEMAIL)
  HAVE_MOVEMAIL=1
  AC_SUBST(HAVE_MOVEMAIL)
elif test "$OS_TARGET" = "Mac OS"; then
  AC_DEFINE(XP_UNIX)
  AC_DEFINE(UNIX_EMBED)
  AC_DEFINE(UNIX_LDAP)
  AC_DEFINE(UNIX_ASYNC_DNS)
elif test "$OS_TARGET" = "POSIX_for_OpenVMS_AXP"; then
  AC_DEFINE(XP_UNIX)
  AC_DEFINE(UNIX_ASYNC_DNS)
else
  AC_DEFINE(XP_UNIX)
  AC_DEFINE(UNIX_ASYNC_DNS)
  AC_DEFINE(HAVE_MOVEMAIL)
  HAVE_MOVEMAIL=1
  AC_SUBST(HAVE_MOVEMAIL)
fi

AC_DEFINE(JS_THREADSAFE)


# Used for LD_LIBRARY_PATH of run_viewer target
LIBS_PATH=
for lib_arg in $NSPR_LIBS $TK_LIBS; do
  case $lib_arg in
    -L* ) LIBS_PATH="${LIBS_PATH:+$LIBS_PATH:}"`expr $lib_arg : "-L\(.*\)"` ;;
      * ) ;;
  esac
done
AC_SUBST(LIBS_PATH)

dnl Spit out some output
dnl ========================================================

# Save the defines header file before autoconf removes it.
# (Do not add AC_DEFINE calls after this line.)
if test "$_USE_CPP_INCLUDE_FLAG"; then
  _CONFIG_TMP=confdefs-tmp.h
  _CONFIG_DEFS_H=config-defs.h

  cat > $_CONFIG_TMP <<\EOF
/* List of defines generated by configure. Included with preprocessor flag,
 * -include, to avoid long list of -D defines on the compile command-line.
 * Do not edit.
 */
EOF
  sort confdefs.h >> $_CONFIG_TMP

  # Only write config-defs.h when something changes (or it doesn't exist)
  if cmp -s $_CONFIG_TMP $_CONFIG_DEFS_H; then
    rm $_CONFIG_TMP
  else
    AC_MSG_RESULT("creating $_CONFIG_DEFS_H")
    mv -f $_CONFIG_TMP $_CONFIG_DEFS_H

    if test "$VERBOSE_CONFIG_DEFS"; then
      echo ==== $_CONFIG_DEFS_H =================================
      cat $_CONFIG_DEFS_H
    fi
  fi
fi

AC_SUBST(MOZ_DEFINES)

dnl Load the list of Makefiles to generate.
dnl   To add new Makefiles, edit allmakefiles.sh.
dnl   allmakefiles.sh sets the variable, MAKEFILES.
. ${srcdir}/allmakefiles.sh
dnl 
dnl Run a perl script to quickly create the makefiles.
dnl If it succeeds, it outputs a shell command to set CONFIG_FILES
dnl   for the files it cannot handle correctly. This way, config.status
dnl   will handle these files.
dnl If it fails, nothing is set and config.status will run as usual.
dnl
dnl This does not change the $MAKEFILES variable.
dnl
dnl OpenVMS gets a line overflow on the long eval command, so use a temp file.
dnl
echo $MAKEFILES | $PERL $srcdir/build/autoconf/acoutput-fast.pl > conftest.sh
. ./conftest.sh
rm conftest.sh

echo $MAKEFILES > unallmakefiles

AC_OUTPUT($MAKEFILES)

dnl ========================================================
dnl = Setup a nice relatively clean build environment for
dnl = sub-configures.
dnl ========================================================
CC="$_SUBDIR_CC" 
CXX="$_SUBDIR_CXX" 
CFLAGS="$_SUBDIR_CFLAGS" 
CPPFLAGS="$_SUBDIR_CPPFLAGS"
CXXFLAGS="$_SUBDIR_CXXFLAGS"
LDFLAGS="$_SUBDIR_LDFLAGS"
HOST_CC="$_SUBDIR_HOST_CC" 
HOST_CFLAGS="$_SUBDIR_HOST_CFLAGS"
HOST_LDFLAGS="$_SUBDIR_HOST_LDFLAGS"
WINDRES=
DLLTOOL=

unset MAKEFILES
unset CONFIG_FILES

if test -z "$MOZ_NATIVE_NSPR" || test "$MOZ_LDAP_XPCOM"; then
    ac_configure_args="$_SUBDIR_CONFIG_ARGS --with-dist-prefix=$MOZ_BUILD_ROOT/dist"
    AC_OUTPUT_SUBDIRS(nsprpub)
fi

if test -z "$MOZ_NATIVE_NSPR"; then
    # Hack to deal with the fact that we use NSPR_CFLAGS everywhere
    AC_MSG_WARN([Recreating autoconf.mk with updated nspr-config output])
    case "$target" in
    *-*-os2_vacpp)
        ;;
    *)
        NSPR_LIBS=`./nsprpub/config/nspr-config --prefix=$MOZ_BUILD_ROOT/dist --exec-prefix=$MOZ_BUILD_ROOT/dist --libs`
        $PERL -pi.bak -e "s {^NSPR_LIBS\s*=.*} {NSPR_LIBS = $NSPR_LIBS }" config/autoconf.mk
        ;;
    esac
    NSPR_CFLAGS=`./nsprpub/config/nspr-config --prefix=$MOZ_BUILD_ROOT/dist --exec-prefix=$MOZ_BUILD_ROOT/dist --cflags`
    $PERL -pi.bak -e "s {^NSPR_CFLAGS\s*=.*} {NSPR_CFLAGS = $NSPR_CFLAGS }" config/autoconf.mk
    rm -f config/autoconf.mk.bak
fi

# if we're building the LDAP XPCOM component, we need to build 
# the c-sdk first.  
#
if test "$MOZ_LDAP_XPCOM"; then

  # these subdirs may not yet have been created in the build tree.
  # don't use the "-p" switch to mkdir, since not all platforms have it
  #
  if test ! -d "directory"; then
    mkdir "directory"
  fi
  if test ! -d "directory/c-sdk"; then
    mkdir "directory/c-sdk"    
  fi
  if test ! -d "directory/c-sdk/ldap"; then
    mkdir "directory/c-sdk/ldap"    
  fi

  ac_configure_args="$_SUBDIR_CONFIG_ARGS --prefix=$MOZ_BUILD_ROOT/dist"
  AC_OUTPUT_SUBDIRS(directory/c-sdk/ldap)
fi

if test "$MOZ_PSM" && test -n "$MOZ_NSS_AUTOCONF"; then
    if test ! -d security; then
        rm -rf security; mkdir security
    fi
    ac_configure_args="$_SUBDIR_CONFIG_ARGS --with-dist-prefix=$MOZ_BUILD_ROOT/dist --with-mozilla --disable-cmd"
    AC_OUTPUT_SUBDIRS(security/nss)
fi