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 Christopher Seawood. All
dnl 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
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=10002
NSPR_VERSION=3

dnl Set the minimum version of toolkit libs used by mozilla
dnl ========================================================
GTK_VERSION=1.2.0
LIBIDL_VERSION=0.6.3

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 -f client.mk cleansrcdir
	***
	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 "$HOST_CC"; then
	AC_CHECK_PROGS(HOST_CC, gcc cc /usr/ucb/cc, "")
	if test -z "$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, $CCC c++ g++ gcc CC cxx cc++ cl, "")
	if test -z "$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 "$DLLTOOL"; then
	AC_CHECK_PROGS(DLLTOOL, "${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, $CC)
    AC_PATH_PROGS(AR, ar, :)
    AC_PATH_PROGS(LD, ld, :)
    AC_PATH_PROGS(DLLTOOL, dlltool, :)
    if test -z "$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

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

GNU_CC=
GNU_CXX=
if test "$GCC" = "yes"; then
    GNU_CC=1
fi
if test "$GXX" = "yes"; then
    GNU_CXX=1
fi

AC_SUBST(GNU_CC)
AC_SUBST(GNU_CXX)

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(PERL, perl5 perl, :)
AC_PATH_PROGS(EMACS, xemacs lemacs emacs, :)
AC_PATH_PROGS(PERL, perl5 perl, :)
AC_PATH_PROG(WHOAMI, whoami, :)
AC_PATH_PROG(UNZIP, unzip, :)
AC_PATH_PROG(ZIP, zip, :)
AC_PATH_PROG(SYSTEM_MAKEDEPEND, makedepend)

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 ========================================================
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
NEED_BASE_DLL_NAME_ALSO=

OS_TARGET=`uname -s`
OS_ARCH=`uname -s | sed -e 's|/|_|g'`
OS_RELEASE=`uname -r`
OS_TEST=`uname -m`
_COMPILER_PREFIX=

dnl ========================================================
dnl GNU specific defaults
dnl ========================================================
if test "$GNU_CC"; then
    MKSHLIB='$(CXX) $(DSO_LDOPTS)'
    MKCSHLIB='$(CC) $(DSO_LDOPTS)'
    DSO_LDOPTS='-shared -Wl,-h -Wl,$@'
    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
    _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Wall -W -Wno-unused -Wshadow -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) $(DSO_LDOPTS)'
    MKCSHLIB='$(LD) $(DSO_LDOPTS)'
    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} -Wshadow"
	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 MOZ_COMPONENTS_LIBS
dnl
dnl 'extra' link flags iff this is a component
dnl See the IS_COMPONENT rule in rules.mk
dnl ========================================================

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

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'
	DSO_CFLAGS='-qflag=w:w'
	DSO_PIC_CFLAGS='-DPIC'
    fi
    MKSHLIB='$(AIX_SHLIB_BIN) $(DSO_LDOPTS)'
    MKCSHLIB='$(AIX_SHLIB_BIN) $(DSO_LDOPTS)'
    AC_DEFINE(NSCAP_DISABLE_DEBUG_PTR_TYPES)
    ;;

*-beos*)
    MKSHLIB='$(CXX) $(DSO_LDOPTS)'
    DSO_LDOPTS='-nostart -Xlinker --ignore-undefined'
    TK_LIBS='-lbe -lroot'
    ;;

*-bsdi*)
    dnl -pedantic doesn't play well with BSDI's _very_ modified gcc (shlicc2)
    _PEDANTIC=
    _IGNORE_LONG_LONG_WARNINGS=
    case $OS_RELEASE in
	4.*) ;;
	*)
	    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 $DSO_LDOPTS"
    fi
    # Hack for FreeBSD 2.2
    if test -z "$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) $(DSO_LDOPTS)'
	MKCSHLIB='$(CC) $(DSO_LDOPTS)'
    else
	DSO_LDOPTS='-b -E +s -L$(DIST)/bin -L$(DIST)/lib'
	MKSHLIB='$(LD) $(DSO_LDOPTS)'
	MKCSHLIB='$(LD) $(DSO_LDOPTS)'
    fi
    MOZ_POST_PROGRAM_COMMAND='chatr +s enable'
    AC_DEFINE(NSCAP_DISABLE_DEBUG_PTR_TYPES)
    ;;

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

*-irix6*)
    dnl What about IRIX 6.2?
    AC_DEFINE(IRIX6_3)
    DSO_LDOPTS='-elf -shared'
    MKSHLIB='$(CCC) $(DSO_LDOPTS)'
    MKCSHLIB='$(CC) $(DSO_LDOPTS)'
    if test "$GNU_CC"; then
       MKSHLIB_FORCE_ALL='-Wl,-all'
       MKSHLIB_UNFORCE_ALL='-Wl,-none'
       _WARNINGS_CFLAGS="-Wall"
       _WARNINGS_CXXFLAGS="-Wall"
    else
       MKSHLIB_FORCE_ALL='-all'
       MKSHLIB_UNFORCE_ALL='-none'
       CFLAGS="$CFLAGS -woff 3262"
       CXXFLAGS="$CXXFLAGS -woff 3262"
       AC_DEFINE(NSCAP_DISABLE_DEBUG_PTR_TYPES)
    fi
    ;;

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

    case "${host_cpu}" in
    alpha*)
	CFLAGS="$CFLAGS -mieee"
	CXXFLAGS="$CXXFLAGS -mieee"
    ;;
    i*86*)
    AC_DEFINE(MOZ_LEAKY)
    ;;
    esac
    ;;

*-mingw*)
    AC_DEFINE(_WINDOWS)
    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*)
    DLL_SUFFIX="so.1.0"
    DSO_CFLAGS=''
    DSO_PIC_CFLAGS='-fPIC'
    CFLAGS="$CFLAGS -Dunix"
    CXXFLAGS="$CXXFLAGS -Dunix"
    # At least for 1.3 and up, ld supports this, despite the test failing above.
    MKSHLIB_FORCE_ALL='--whole-archive'
    MKSHLIB_UNFORCE_ALL='--no-whole-archive'
    case $OS_TEST in
	alpha)
		dnl NetBSD/alpha can't find a shared lib
		dnl (.so.1.0) unless there's a .so as well.
		NEED_BASE_DLL_NAME_ALSO=1
		;;
	*86)
		MKSHLIB='$(LD) $(DSO_LDOPTS)'
		MKCSHLIB='$(LD) $(DSO_LDOPTS)'
		;;
    esac
    dnl Test for a.out platform and handle C++ libraries correctly
    if $CC -E - -dM </dev/null | grep -v __ELF__ >/dev/null; then
	DSO_LDOPTS="-shared"
    fi
    if test "$LIBRUNPATH"; then
	DSO_LDOPTS="-R$LIBRUNPATH $DSO_LDOPTS"
    fi
    ;;

*-nto*) 
    CFLAGS="$CFLAGS -DNTO -D__QNXNTO__ -D_QNX_SOURCE -D_POSIX_SOURCE -D__i386__ -D_i386 -DNSCAP_NO_EXPLICIT -DNO_REGEX -DSTRINGS_ALIGNED -D_SEEKPOS_DEFINED_ -I/usr/gcc/lib/gcc-lib/ntox86/2.8.1/include"
    CXXFLAGS="$CXXFLAGS -DNTO -D__QNXNTO__ -D_QNX_SOURCE -D_POSIX_SOURCE -D__i386__ -D_i386 -DNSCAP_NO_EXPLICIT -DNO_REGEX -DSTRINGS_ALIGNED -D_SEEKPOS_DEFINED_ -I/usr/gcc/lib/gcc-lib/ntox86/2.8.1/include"
    _WARNINGS_CFLAGS='-w'
    _WARNINGS_CXXFLAGS='-w'
    OS_TARGET="NTO"
    MOZ_OPTIMIZE_FLAGS="-O2"
	MOZ_DEBUG_FLAGS="-gdwarf-2"
    DSO_LDOPTS="-M $DSO_LDOPTS"
    DSO_CFLAGS=''
    DSO_PIC_CFLAGS="-shared -Wc,-fPIC -DPIC"
    MKSHLIB='qcc -Vgcc_ntox86 $(DSO_LDOPTS)'
    MKCSHLIB='qcc -Vgcc_ntox86 $(DSO_LDOPTS)'
    AR='qcc -Vgcc_ntox86'
    AR_FLAGS='-M -a $@'
    AR_LIST='ar.elf t'
    AR_EXTRACT='ar.elf x'
    AR_DELETE='ar.elf d'
    _DEFINES_CFLAGS='-Wp,-include,$(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 -lstdc++"
	HAVE_DEV_ZERO=1
    ;;

*-openbsd*)
    DLL_SUFFIX="so.1.0"
    DSO_CFLAGS=''
    DSO_PIC_CFLAGS='-fPIC'
    DSO_LDOPTS='-shared -h $@'
    MKSHLIB='$(LD) $(DSO_LDOPTS)'
    MKCSHLIB='$(LD) $(DSO_LDOPTS)'
    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 "$OS_TARGET" = "POSIX_for_OpenVMS_AXP"; then
	dnl Hack...
	_OPENVMS_CROSS_COMPILE=1
	NSPR_LIBS="-lnspr$NSPR_VERSION -lplc$NSPR_VERSION -lplds$NSPR_VERSION"
    fi
    ;;

alpha*-*-osf*)
    if test "$GNU_CC"; then
	DSO_LDOPTS='-shared -Wl,-soname -Wl,$@'
    else
	CFLAGS="$CFLAGS -std1 -ieee_with_inexact"
	CXXFLAGS="$CXXFLAGS -std1 -ieee_with_inexact"
	DSO_LDOPTS='-shared -msym -expect_unresolved \* -soname $@'
	DSO_CFLAGS=
	MKSHLIB='-$(LD) $(DSO_LDOPTS)'
	MKCSHLIB='-$(LD) $(DSO_LDOPTS)'
	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
    ;;

*-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"
    ;;

*-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)
    if test ! "$GNU_CC"; then
       AC_DEFINE(NSCAP_DISABLE_DEBUG_PTR_TYPES)
       LDFLAGS='-xildoff'
       MKSHLIB='$(CXX) $(DSO_LDOPTS)'
       MKCSHLIB='$(CC) $(DSO_LDOPTS)'
       MKSHLIB_FORCE_ALL='-z allextract'
       MKSHLIB_UNFORCE_ALL=''
       DSO_LDOPTS='-G -h $@'
       AR_LIST="$AR t"
       AR_EXTRACT="$AR x"
       AR_DELETE="$AR d"
       AR='$(CXX) -xar'
       AR_FLAGS='-o $@'
       AS='/usr/ccs/bin/as'
       AS_DASH_C_FLAG=''
       NS_USE_NATIVE=1
       case $OS_TEST in
         sun4u)
           ASFLAGS='-xarch=v8plus -DULTRA_SPARC -P -L -D_ASM -D__STDC__=0 -K PIC'
           AC_DEFINE(ULTRA_SPARC)
           ;;
         *)
           ASFLAGS='-xarch=v8 -P -L -D_ASM -D__STDC__=0 -K PIC'
           ;;
       esac
       dnl The C++ compiler in Workshop 5.0 uses standard iostreams by
       dnl default. -library=iostream will force use of classic iostreams.
       if test ! -z "`${CC} -V 2>&1 | head -1 | grep '5.0'`"; then
	  CXX="$CXX -library=iostream"
       fi
    else
       MKSHLIB='$(CXX) $(DSO_LDOPTS)'
       MKCSHLIB='$(CC) $(DSO_LDOPTS)'
       if test "$ac_cv_mkshlib_force_and_unforce" != "no"; then
       MKSHLIB_FORCE_ALL='-z allextract'
       MKSHLIB_UNFORCE_ALL=''
       fi
       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) $(DSO_LDOPTS)'
    MKCSHLIB='-$(LD) $(DSO_LDOPTS)'
    AC_DEFINE(SUNOS4)
    AC_DEFINE(SPRINTF_RETURNS_STRING)
    ;;

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

esac

dnl See above (netbsd)
AC_SUBST(NEED_BASE_DLL_NAME_ALSO)

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
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 $XEXT_LIBS)
	LDFLAGS="$_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



# BeOS toolkit setting
if test "`echo $target_os | egrep "beos"`"; then
        MOZ_WIDGET_TOOLKIT="beos"
fi

# Photon toolkit setting for the Neutrino platform
if test "`echo $target_os | egrep "nto"`"; then
        MOZ_WIDGET_TOOLKIT="photon"
        AC_DEFINE(NO_X11)
        TK_CFLAGS='-I/usr/nto/include/photon'
        TK_LIBS='-lphoton -lphrender'
fi

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
fi

if test "$MOZ_WIDGET_TOOLKIT" = "xlib"
then
	MOZ_ENABLE_XLIB=1
fi

if test "$MOZ_WIDGET_TOOLKIT" = "qt"
then
	MOZ_ENABLE_QT=1
fi

if test "$MOZ_WIDGET_TOOLKIT" = "motif"
then
	MOZ_ENABLE_MOTIF=1
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

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

	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

	dnl ========================================================
	dnl =
	dnl = GtkMozilla support
	dnl = 
	dnl = On by default on linux whenever ENABLE_GTK is true
	dnl = 
	dnl ========================================================
	case "$target" in
		*-linux*)
			MOZ_ENABLE_GTK_MOZILLA=1
		;;
	esac


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

	AC_MSG_CHECKING(for Qt insanity)

    QT_CFLAGS="-I${QTDIR}/include/qt"
    QT_LIBS="-L/usr/X11R6/lib -L${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
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_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_QT_CFLAGS)
AC_SUBST(MOZ_QT_LDFLAGS)
AC_SUBST(MOZ_DEFAULT_TOOLKIT)

XCFLAGS="$X_CFLAGS"

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

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

dnl RedHat 6.0 (Hedwig) ships with orbit which includes libIDL
if test -f /etc/redhat-release
then
	if egrep "Hedwig" /etc/redhat-release >/dev/null
	then
		if test -x /usr/bin/orbit-config
		then
			SKIP_IDL_CHECK="yes"
			LIBIDL_CFLAGS="-I/usr/lib/glib/include"
			LIBIDL_LIBS="-lglib -lIDL"
			AC_SUBST(LIBIDL_CFLAGS)
			AC_SUBST(LIBIDL_LIBS)
		fi
	fi
fi

if test "$SKIP_IDL_CHECK" = "no"
then
AM_PATH_LIBIDL($LIBIDL_VERSION,,
  [echo libIDL $LIBIDL_VERSION or higher is required.]
  [echo Get yourself a RPM or source package from ftp://ftp.mozilla.org/]
  [echo before your tree is HOSED.]
  [echo See http://www.rpi.edu/~veliaa/libIDL/ for more information.]
  [AC_MSG_ERROR(libIDL not installed.)])
fi

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 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 Checks for header files.
dnl ========================================================
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(sys/ipc.h shm.h sys/shm.h X11/extensions/XShm.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
    AC_CHECK_LIB(C, demangle)
fi
AC_CHECK_LIB(resolv, res_gethostbyaddr)
AC_CHECK_LIB(socket, getnetbyaddr)
AC_CHECK_LIB(util, login)
AC_CHECK_LIB(nsl, xdr_string)
AC_CHECK_LIB(elf, elf_rawdata)
AC_CHECK_LIB(intl, textdomain)
AC_CHECK_LIB(posix4, shm_open)
AC_CHECK_LIB(w, iswupper)

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


dnl 
dnl Try lib pthread
dnl 
AC_CHECK_LIB(pthread, pthread_attr_init, 
             USE_PTHREADS=1 _PTHREAD_LDFLAGS="-lpthread",
    AC_CHECK_LIB(c_r, pthread_attr_init,
        USE_PTHREADS=1 _PTHREAD_LDFLAGS="-lc_r",
        AC_CHECK_LIB(c, pthread_attr_init,
            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*

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

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

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

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

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

dnl
dnl Add the pthread flags to the nspr libs
dnl ========================================================
NSPR_LIBS="$NSPR_LIBS $_PTHREAD_LDFLAGS"

dnl Check for NSPR.
dnl ========================================================
dnl 
dnl We always use the system NSPR from now on...this option
dnl tells where to find NSPR rather than whether to use it.
dnl ========================================================
AC_ARG_WITH(nspr,
[  --with-nspr=PFX         Prefix where NSPR is installed],
	NSPR_DIR=$withval)

AC_ARG_WITH(nsprlib,
[  --with-nsprlib=DIR      Directory where NSPR libraries are installed],
	NSPR_LIBDIR=$withval)

dnl Skip this if cross-compiling, since the checks will fail.
if test "$_OPENVMS_CROSS_COMPILE"x = x; then

_SAVE_CFLAGS=$CFLAGS
_SAVE_LDFLAGS=$LDFLAGS
_SAVE_LIBS=$LIBS
CFLAGS="$CFLAGS -I${NSPR_DIR}/include"
if test "$NSPR_LIBDIR"x = x; then
   LDFLAGS="$LDFLAGS -L${NSPR_DIR}/lib $NSPR_LIBS"
else
   LDFLAGS="$LDFLAGS -L${NSPR_LIBDIR} $NSPR_LIBS"
fi

AC_MSG_CHECKING("for PR_GetCurrentThread in -lnspr$NSPR_VERSION")
LIBS="-lnspr$NSPR_VERSION $NSPR_LIBS $LIBS"
AC_TRY_RUN(
	#include <stdio.h>
	#include <nspr.h>
	int main () {
	    PRThread *dummy = PR_GetCurrentThread();
	    exit(0);
	}
	, [NSPR_LIBS="-lnspr$NSPR_VERSION $NSPR_LIBS" result="yes"],
	[_NSPR_NEEDS_THREAD_LIB=1 result="no"], 
	[NSPR_LIBS="-lnspr$NSPR_VERSION $NSPR_LIBS" result="yes"] )
rm -f core
AC_MSG_RESULT("$result")

dnl XXX - Is this really the best way to do this check? - cls
if test "$_NSPR_NEEDS_THREAD_LIB" = 1; then

LIBS=$_SAVE_LIBS
AC_MSG_CHECKING("for PR_GetCurrentThread in -lnspr$NSPR_VERSION with thread lib")
    LIBS="-lnspr$NSPR_VERSION $NSPR_LIBS $LIBS"
    AC_TRY_RUN(
	#include <stdio.h>
	#include <nspr.h>
	int main () {
	    PRThread *dummy = PR_GetCurrentThread();
	    exit(0);
	}
	, [NSPR_LIBS="-lnspr$NSPR_VERSION $NSPR_LIBS" result="yes"],
	[MISSING_NSPR="$MISSING_NSPR -lnspr$NSPR_VERSION" result="no"], 
	[NSPR_LIBS="-lnspr$NSPR_VERSION $NSPR_LIBS" result="yes"] )
    rm -f core
AC_MSG_RESULT("$result")
fi

if test "$cross_compiling" = "yes"; then
    NSPR_LIBS="-lplds$NSPR_VERSION -lplc$NSPR_VERSION $NSPR_LIBS"
else
    AC_CHECK_LIB(plc$NSPR_VERSION, PL_CreateOptState, NSPR_LIBS="-lplc$NSPR_VERSION $NSPR_LIBS",
	[MISSING_NSPR="$MISSING_NSPR -lplc$NSPR_VERSION"], $NSPR_LIBS)
    AC_CHECK_LIB(plds$NSPR_VERSION, PL_GetEvent, NSPR_LIBS="-lplds$NSPR_VERSION $NSPR_LIBS",
	[MISSING_NSPR="$MISSING_NSPR -lplds$NSPR_VERSION"], $NSPR_LIBS)
fi
CFLAGS=$_SAVE_CFLAGS
LDFLAGS=$_SAVE_LDFLAGS
LIBS=$_SAVE_LIBS

fi # ! CROSS_COMPILE

if test "${NSPR_DIR}" -a -d "${NSPR_DIR}"; then
    NSPR_INCLUDE_DIR="${NSPR_DIR}/include"
    NSPR_CFLAGS="-I${NSPR_INCLUDE_DIR}"
    if test "$NSPR_LIBDIR"x != x; then
        NSPR_LIBS="-L${NSPR_LIBDIR} ${NSPR_LIBS}"
    else
        NSPR_LIBS="-L${NSPR_DIR}/lib ${NSPR_LIBS}"
    fi
fi

dnl
dnl If NSPR was not detected in the system, use the one in the source
dnl tree (mozilla/nsprpub)
dnl
dnl NSPR_INCLUDE_DIR and NSPR_CFLAGS are blank because NSPR built as
dnl part of the mozilla build, will install its headers and libs in
dnl the same place as mozilla.
dnl
AC_MSG_CHECKING(whether have system NSPR)
if test "$MISSING_NSPR"; then
   AC_MSG_RESULT(no (will build it from source))
   NSPR_INCLUDE_DIR=
   NSPR_CFLAGS=
   NSPR_LIBS="-lplds$NSPR_VERSION -lplc$NSPR_VERSION -lnspr$NSPR_VERSION $_PTHREAD_LDFLAGS"
dnl
dnl Otherwise, we are using an NSPR installed in the system.
dnl
dnl We need to set MOZ_NATIVE_NSPR so that mozilla/nsprpub is not built.
dnl
else
   AC_MSG_RESULT(yes)
   MOZ_NATIVE_NSPR=1
fi

USE_NSPR_AUTOCONF=
MOZ_ARG_ENABLE_BOOL(nspr-autoconf,
    [  --enable-nspr-autoconf  Use autoconf when building nspr],
    USE_NSPR_AUTOCONF=1)

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)

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; 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

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="$LIBS -lstdc++"
  AC_MSG_CHECKING(for ostreams in -lstdc++)
  AC_CACHE_VAL(ac_cv_lib_stdcpp_ostream,
    [AC_TRY_LINK([#include <iostream.h>],
                [ostream *foo=new ostream();],
                [ac_cv_lib_stdcpp_ostream=true],
                [ac_cv_lib_stdcpp_ostream=false])])
  if test "$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 {};
                               template <> 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
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

AC_CACHE_CHECK(for C++ \"using\" keyword,
               ac_cv_cpp_using,
               [AC_TRY_COMPILE(class X { public: int go() {return 3;} };
                               class Y : public X {
                                 private: using X::go;
                               };,
                               X x; Y y;,
                               ac_cv_cpp_using=yes,
                               ac_cv_cpp_using=no)])
if test "$ac_cv_cpp_using" = yes ; then
   AC_DEFINE(HAVE_CPP_USING)
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 note that this one is reversed - if the test fails, then
dnl we require implementations of unused methods
AC_CACHE_CHECK(whether C++ requires implementation of unused methods,
               ac_cv_cpp_unused_required,
               [AC_TRY_LINK(class X {private: 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 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 catagory = 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)

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 build the tests by default
ENABLE_TESTS=1
MOZ_ARG_DISABLE_BOOL(tests,
[  --disable-tests         Dont build the tests],
  ENABLE_TESTS= )

dnl Build browsing profile; off by default
MOZ_ARG_ENABLE_BOOL(brprof,
[  --enable-brprof         Enable browsing profile cookie],
  MOZ_BRPROF=1
  AC_DEFINE(MOZ_BRPROF))

dnl Build w/o X11 shared mem extensions by default
if test "$no_x" != "yes"; then
AC_ARG_ENABLE(x11-shm,
[  --enable-x11-shm        Enable use of X11 shared mem in gfx],
    [ if test "$enableval" = "yes"; then
	if test "$ac_cv_header_sys_ipc_h" = "yes" &&
	   test "$ac_cv_header_sys_shm_h" = "yes" &&
	   test "$ac_cv_header_X11_extensions_XShm_h" = "yes"; then
		AC_DEFINE(USE_SHM)
	else
	   AC_MSG_WARN("X11 Shared Memory extensions not supported under this configuration.")
	fi
      fi])
fi # ! no_x

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
case "$target" in
    *-*-linux*)   MOZ_MONOLITHIC_TOOLKIT= ;;
    *-*-solaris*) MOZ_MONOLITHIC_TOOLKIT= ;;
    *-openvms*)   MOZ_MONOLITHIC_TOOLKIT= ;;
    *-freebsd*)   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 ========================================================


MOZ_ARG_DISABLE_BOOL(gtk-mozilla,
[  --disable-gtk-mozilla   Disable building of GtkMozilla GTK+ widget],
   MOZ_ENABLE_GTK_MOZILLA=)


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-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_BOOL(optimize,
[  --enable-optimize       Enable code optimizations ],
  [ MOZ_OPTIMIZE=1 ])

if test "$MOZ_OPTIMIZE"
then
  CFLAGS="$CFLAGS $MOZ_OPTIMIZE_FLAGS"
  CXXFLAGS="$CXXFLAGS $MOZ_OPTIMIZE_FLAGS"
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
	MOZ_DEBUG_FLAGS="-g"
fi

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

if test "$MOZ_DEBUG"
then
  CFLAGS="$CFLAGS $MOZ_DEBUG_FLAGS"
  CXXFLAGS="$CXXFLAGS $MOZ_DEBUG_FLAGS"
  AC_DEFINE(DEBUG)
  AC_DEFINE_UNQUOTED(DEBUG_`$WHOAMI`)
  AC_DEFINE(TRACING)
else
  AC_DEFINE(NDEBUG)
  AC_DEFINE(TRIMMED)
fi

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

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,$(topsrcdir)/build/unix/gnu-ld-scripts/components-version-script'
        ;;
    esac
fi
dnl ========================================================

dnl ========================================================
dnl =
dnl = --with-debug-modules=module1,module1,etc
dnl = 
dnl = Enable debug for specific modules only
dnl = 
dnl ========================================================
MOZ_ARG_WITH_STRING(debug-modules,
[  --with-debug-modules    Enable debug for specific modules only],
  [ MOZ_DEBUG_MODULES=`echo $withval | sed 's/,/ /g'` ] )
dnl ========================================================

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="cookie wallet"

MOZ_ARG_WITH_STRING(extensions,
[  --with-extensions       Enable extensions (dirs in extensions/)],
  [ if test "$withval" = "yes" || test "$withval" = "all"; then
        MOZ_EXTENSIONS="cookie irc wallet"
    elif test "$withval" = "no" || test "$withval" = "none"; then
        MOZ_EXTENSIONS=""
    elif test "$withval" != ""; then
        MOZ_EXTENSIONS=`echo $withval | sed 's/,/ /g'`
    fi ] )
dnl ========================================================

_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 "$_cpp_md_flag"; then
  COMPILER_DEPEND=1
  MDDEPDIR='.deps'
  _DEPEND_CFLAGS='$(filter-out %/.pp,-Wp,-MD,$(MDDEPDIR)/$(*F).pp)'
fi
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 "$_PEDANTIC"; then
  _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} ${_COMPILER_PREFIX}-pedantic"
  _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} ${_COMPILER_PREFIX}-pedantic"
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

MOZ_ARG_DISABLE_BOOL(shared,
[  --disable-shared        Disable building of internal shared libs],
  NO_SHARED_LIB=1)

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 ],
    [ _MOZ_EXCEPTIONS_FLAGS=-fexceptions ]
)

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

MOZ_ARG_ENABLE_BOOL(gprof,
[  --enable-gprof          Enable gprof symbols],
  [ _GPROF_CFLAGS="-pg" ])

dnl Enable performance metrics.
MOZ_ARG_ENABLE_BOOL(perf-metrics,
[  --enable-perf-metrics   Enable performance metrics],
  MOZ_PERF=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 ],
  MOZ_INSURE_DIRS=$withval )

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

MOZ_ARG_ENABLE_BOOL(profile,
[  --enable-profile        Enable profiling (solaris only)],
  MOZILLA_GPROF=1)

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=no) ],
  MOZ_LOG_REFCNT=1
  AC_DEFINE(MOZ_LOG_REFCNT))

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

dnl Detect webshell leaks
MOZ_ARG_ENABLE_BOOL(detect-webshell-leaks,
[  --enable-detect-webshell-leaks   Enable detection of webshell leaks],
  DETECT_WEBSHELL_LEAKS=1
  AC_DEFINE(DETECT_WEBSHELL_LEAKS))

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) (default=no) ],
  [ 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)'
    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 if available (default=no) ],
  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 builds
        if test "$MOZ_DEBUG"
        then
            MOZ_DEMANGLE_SYMBOLS=1
            AC_DEFINE(MOZ_DEMANGLE_SYMBOLS)
        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 "$enableval" | grep "\/" >/dev/null; then
    AC_MSG_ERROR("Homedir must be single relative path.")
  else 
    AC_DEFINE(MOZ_USER_DIR,"$enableval")
  fi], 
  AC_DEFINE(MOZ_USER_DIR,".mozilla") )

MOZ_ARG_ENABLE_BOOL(idltool,
[  --enable-idlc           Build idl tool (default=no) ],
  BUILD_IDLC=1)

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

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

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 use GNU make's implicit archive feature to save space
MOZ_ARG_ENABLE_BOOL(implicit-archive,
[  --enable-implicit-archive
                          Use GNU make's implicit archive feature],
    USE_IMPLICIT_ARCHIVE=1)

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 = Untested or Broken Options
dnl = 
dnl ========================================================
MOZ_ARG_HEADER(Untested or Broken Options)

dnl ========================================================
dnl =
dnl = MOZ_TIMER_LIBS
dnl =
dnl = Set the timer libs according to MOZ_MONOLITHIC_TOOLKIT
dnl =
dnl ========================================================
MOZ_TIMER_LIBS='$(DIST)/lib/libtimer_s.a'

# Beos needs to link the timer in dynamically
case "$target" in
    *-beos*)
        MOZ_TIMER_LIBS='$(DIST)/lib/libtimer_beos.so'
	;;
esac

dnl ========================================================
dnl =
dnl = End MOZ_TIMER_LIBS
dnl =
dnl ========================================================

NO_STATIC_LIB=1

MOZ_ARG_ENABLE_BOOL(static,
[  --enable-static         Enable building of internal static libs],
  NO_STATIC_LIB=)

case "$target" in
    *-*-aix*)
	if test "${NO_STATIC_LIB}" = "1" -o -z "${NO_SHARED_LIB}"; then
	    if test -f /usr/lpp/xlC/bin/makeC++SharedLib_r; then
		AIX_SHLIB_BIN='/usr/lpp/xlC/bin/makeC++SharedLib_r'
	    elif test -f /usr/ibmcxx/bin/makeC++SharedLib_r; then
		AIX_SHLIB_BIN='/usr/ibmcxx/bin/makeC++SharedLib_r'
	    fi
	    AC_PATH_PROG(AIX_SHLIB_BIN, makeC++SharedLib_r, :)
	    if test ! -n "$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
		NO_STATIC_LIB=''
		NO_SHARED_LIB=1
	    fi
	fi
	AC_SUBST(AIX_SHLIB_BIN)
	;;
esac

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(NS_USE_NATIVE)
AC_SUBST(MOZ_WIDGET_TOOLKIT)
AC_SUBST(MOZ_GFX_TOOLKIT)
AC_SUBST(MOZ_UPDATE_XTERM)
AC_SUBST(MOZ_MATHML)
AC_SUBST(MOZ_MONOLITHIC_TOOLKIT)
AC_SUBST(MOZ_TIMER_LIBS)
AC_SUBST(MOZ_SECURITY)
dnl AC_SUBST(MOZ_NETCAST)
AC_SUBST(MOZ_DEBUG)
AC_SUBST(MOZ_DEBUG_MODULES)
AC_SUBST(MOZ_EXTENSIONS)
AC_SUBST(MOZILLA_GPROF)
AC_SUBST(MOZ_PERF_METRICS)
AC_SUBST(GC_LEAK_DETECTOR)
AC_SUBST(MOZ_LOG_REFCNT)
AC_SUBST(MOZ_LEAKY)
AC_SUBST(DETECT_WEBSHELL_LEAKS)
AC_SUBST(MOZ_INSURE)
AC_SUBST(MOZ_INSURE_DIRS)
AC_SUBST(MOZ_INSURE_EXCLUDE_DIRS)
AC_SUBST(MOZ_INSURIFYING)
AC_SUBST(MOZ_BUILD_XPFE)
dnl AC_SUBST(MOZ_LDAP)
AC_SUBST(MOZ_BRPROF)

AC_SUBST(UNIX_CRASH_ON_ASSERT)
AC_SUBST(NO_UNIX_ASYNC_DNS)
AC_SUBST(NO_SHARED_LIB)
AC_SUBST(NO_STATIC_LIB)
AC_SUBST(ENABLE_TESTS)
AC_SUBST(MOZ_USER_DIR)
dnl AC_SUBST(MOZ_SMART_MAIL)
AC_SUBST(FULL_STATIC_BUILD)
AC_SUBST(BUILD_IDLC)
AC_SUBST(MOZ_ENABLE_GTK_MOZILLA)
AC_SUBST(USE_IMPLICIT_ARCHIVE)

AC_SUBST(MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS)

AC_SUBST(MOZ_COMPONENT_NSPR_LIBS)
AC_SUBST(MOZ_COMPONENT_XPCOM_LIBS)
AC_SUBST(MOZ_COMPONENT_LIBS)

AC_SUBST(MOZ_GLE)

AC_SUBST(MOZ_BUILD_ROOT)

AC_SUBST(MOZ_POST_DSO_LIB_COMMAND)
AC_SUBST(MOZ_POST_PROGRAM_COMMAND)

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

fi

AC_SUBST(MOZ_FULLCIRCLE)
AC_SUBST(FULLCIRCLE_LIBS)


LDFLAGS=`echo \
	$_WARNINGS_CFLAGS \
	$LDFLAGS \
	$CFLAGS`

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

CXXFLAGS=`echo \
	$_MOZ_RTTI_FLAGS \
	$_MOZ_EXCEPTIONS_FLAGS \
	$_WARNINGS_CXXFLAGS \
	$_GPROF_CFLAGS \
	$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_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(NSPR_INCLUDE_DIR)
AC_SUBST(NSPR_CFLAGS)
AC_SUBST(NSPR_LIBS)
AC_SUBST(MOZ_NATIVE_NSPR)
AC_SUBST(USE_NSPR_AUTOCONF)

AC_SUBST(CFLAGS)
AC_SUBST(CXXFLAGS)
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(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(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)

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 "$OS_TARGET" = "OS2"; then
  AC_DEFINE(XP_PC)
elif test "$OS_TARGET" = "WINNT"; then
  AC_DEFINE(XP_PC)
elif test "$OS_TARGET" = "BeOS"; then
  AC_DEFINE(XP_BEOS)
else
  AC_DEFINE(XP_UNIX)
  AC_DEFINE(UNIX_ASYNC_DNS)
fi

AC_DEFINE(JS_THREADSAFE)
AC_DEFINE(LAYERS)

# 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 ========================================================
dnl =
dnl = Support for feeding NSPR environment variables via
dnl = a file as opposed to the environment itself.
dnl = 
dnl = The following 2 files get generated by configure and
dnl = copied into
dnl = 
dnl = build/unix/nspr_my_config.mk support
dnl = build/unix/nspr_my_override.mk support
dnl = 
dnl = nsprpub/config 
dnl = 
dnl = NSPR will then include these files in its build environment.
dnl = 
dnl = The following variables might need to be set to properly
dnl = build NSPR for unix:
dnl = 
dnl = my_config.mk:
dnl = 
dnl = USE_PTHREADS
dnl = BUILD_OPT
dnl = NS_USE_GCC
dnl = NO_MDUPDATE
dnl = NS_USE_NATIVE
dnl = MOZILLA_CLIENT
dnl = CLASSIC_NSPR
dnl = 
dnl = my_overrides.mk:
dnl = 
dnl = DIST
dnl = 
dnl ========================================================
if test -z "$MOZ_NATIVE_NSPR" && test -z "$USE_NSPR_AUTOCONF"
then
dnl 
dnl USE_PTHREADS
dnl
dnl This flag controls whether NSPR use pthreads, which are usually
dnl native to many unices, to implement multithreading.  On systems
dnl which dont support pthreads, NSPR uses its own user threads
dnl implementation.
dnl
dnl Different unices have different defaults for USE_PTHREADS within
dnl NSPR.  Since at this point in configure.in, we know what we
dnl want, we force USE_PTHREADS to the correct value.
dnl 

dnl 
dnl USE_PTHREADS
dnl
dnl Same as detected above.
dnl
MOZ_NSPRENV_USE_PTHREADS=$USE_PTHREADS

dnl
dnl CLASSIC_NSPR
dnl
dnl On Linux libc5, CLASSIC_NSPR needs to be set so that NSPR chooses
dnl the correct threading implementation (user threads - not pthreads).
dnl On Linux, CLASSIC_NSPR's only purpose to to control linking against
dnl libpthreads.
dnl
MOZ_NSPRENV_CLASSIC_NSPR=
case "$target" in
	*-linux*)
		if test "$USE_PTHREADS"x = x
		then
			MOZ_NSPRENV_CLASSIC_NSPR=1
		fi
	;;
esac

dnl 
dnl BUILD_OPT
dnl
dnl This flag controls whether NSPR is built with debug info
dnl 
if test "$MOZ_DEBUG"
then
  MOZ_NSPRENV_BUILD_OPT=
else
  MOZ_NSPRENV_BUILD_OPT=1
fi

dnl 
dnl NS_USE_GCC 
dnl NS_USE_NATIVE
dnl
dnl These are NSPR's way of switching between "native" and GNU compilers
dnl 
if test "$GNU_CC"
then
  MOZ_NSPRENV_NS_USE_GCC=1
  MOZ_NSPRENV_NS_USE_NATIVE=
else
  MOZ_NSPRENV_NS_USE_NATIVE=1
  MOZ_NSPRENV_NS_USE_GCC=
fi

dnl 
dnl NO_MDUPDATE
dnl
dnl These are set just to be safe.  It is possible that NSPR doesnt
dnl use these anymore.
dnl 
MOZ_NSPRENV_NO_MDUPDATE=1

dnl
dnl MOZILLA_CLIENT
dnl
MOZ_NSPRENV_MOZILLA_CLIENT=

dnl 
dnl DIST
dnl
dnl Where the NSPR stuff gets installed: $DIST/{bin,lib,include}
dnl 
MOZ_NSPRENV_DIST=`pwd`/dist

dnl 
dnl MAKE
dnl
dnl NSPR is not safe for gnu make -jX (where X > 1) builds.  Force make
dnl in NSPR to be 'make -j1' - or just 'make'
dnl 
case "$target" in
	*-linux*)
		MOZ_NSPRENV_OVERRIDE_MAKE=`echo $MAKE | $AWK '{print \$1}'`
	;;

	*)
		MOZ_NSPRENV_OVERRIDE_MAKE=
	;;
esac

AC_SUBST(MOZ_NSPRENV_USE_PTHREADS)
AC_SUBST(MOZ_NSPRENV_BUILD_OPT)
AC_SUBST(MOZ_NSPRENV_NS_USE_GCC)
AC_SUBST(MOZ_NSPRENV_NO_MDUPDATE)
AC_SUBST(MOZ_NSPRENV_NS_USE_NATIVE)
AC_SUBST(MOZ_NSPRENV_MOZILLA_CLIENT)
AC_SUBST(MOZ_NSPRENV_CLASSIC_NSPR)
AC_SUBST(MOZ_NSPRENV_DIST)
AC_SUBST(MOZ_NSPRENV_OVERRIDE_MAKE)
fi
dnl ========================================================


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

AC_OUTPUT($MAKEFILES)

dnl ========================================================
dnl = 
dnl = If we are building NSPR as part of the build, make sure 
dnl = the NSPR environment config and override files get copied
dnl = to the right place.
dnl = 
dnl ========================================================
if test ! "$MOZ_NATIVE_NSPR" && test -z "$USE_NSPR_AUTOCONF"
then
  rm -f ${srcdir}/nsprpub/config/my_config.mk
  rm -f ${srcdir}/nsprpub/config/my_overrides.mk
  cp build/unix/nspr_my_config.mk ${srcdir}/nsprpub/config/my_config.mk
  cp build/unix/nspr_my_overrides.mk ${srcdir}/nsprpub/config/my_overrides.mk
fi

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 "$MOZ_NATIVE_NSPR" && test -n "$USE_NSPR_AUTOCONF"; then
  ac_configure_args="$_SUBDIR_CONFIG_ARGS --prefix=$MOZ_BUILD_ROOT/dist"
  AC_OUTPUT_SUBDIRS(nsprpub)
fi

if test "$MOZ_ENABLE_GTK_MOZILLA"; then
  ac_configure_args="$_SUBDIR_CONFIG_ARGS --prefix=$MOZ_BUILD_ROOT/dist --with-mozilla=$MOZ_BUILD_ROOT/dist"
  AC_OUTPUT_SUBDIRS(webshell/embed/gtk)
fi