pjs/configure.in

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

AC_PREREQ(2.12)
AC_INIT(config/config.mk)
AC_CONFIG_AUX_DIR(${srcdir}/build/autoconf)
AC_CANONICAL_SYSTEM
TARGET_CPU="${target_cpu}"
TARGET_VENDOR="${target_vendor}"
TARGET_OS="${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=10205
MOZMNG="((1<<16)|(0<<8)|(4))"
NSPR_VERSION=4

dnl Set the minimum version of toolkit libs used by mozilla
dnl ========================================================
GLIB_VERSION=1.2.0
GTK_VERSION=1.2.0
LIBIDL_VERSION=0.6.3
PERL_VERSION=5.004
QT_VERSION=2.2.0
QT_VERSION_NUM=220
LIBART_VERSION=2.3.4
GTK2_VERSION=1.3.7

dnl Set various checks
dnl ========================================================
MISSING_X=

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

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

dnl Special win32 checks
dnl ==============================================================
case "$target" in
*-cygwin*|*-mingw*|*-msvc*|*-mksnt*)
    # Check to see if we are really running in a msvc environemnt
    _WIN32_MSVC=1
    AC_CHECK_PROGS(CC, cl)
    AC_CHECK_PROGS(CXX, cl)
    AC_CHECK_PROGS(LD, link)
    AC_CHECK_PROGS(MIDL, midl)    
    
    # Make sure compilers are valid
    CFLAGS="$CFLAGS -TC"
    CXXFLAGS="$CXXFLAGS -TP"
    AC_LANG_SAVE
    AC_LANG_C
    AC_TRY_COMPILE([#include <stdio.h>],
        [ printf("Hello World\n"); ],,
        AC_MSG_ERROR([\$(CC) test failed.  You must have MS VC++ in your path to build.]) )

    AC_LANG_CPLUSPLUS
    AC_TRY_COMPILE([#include <iostream.h>],
        [ cout << "Hello World" << endl; ],,
        AC_MSG_ERROR([\$(CXX) test failed.  You must have MS VC++ in your path to build.]) )
    AC_LANG_RESTORE

    # Determine compiler version
    _CC_FULL_VERSION=`"${CC}" -v 2>&1 | grep Version | sed -e 's|.* Version ||' | sed -e 's|[ ]*$||'`
    _CC_MAJOR_VERSION=`echo ${_CC_FULL_VERSION} | awk -F\. '{ print $ 1 }'`
    _CXX_FULL_VERSION=`"${CXX}" -v 2>&1 | grep Version | sed -e 's|.* Version ||' | sed -e 's|[ ]*$||'`
    _CXX_MAJOR_VERSION=`echo ${_CXX_FULL_VERSION} | awk -F\. '{ print $ 1 }'`
    if test "$_CC_MAJOR_VERSION" != "$_CXX_MAJOR_VERSION"; then
        AC_MSG_ERROR([The major versions of \$CC and \$CXX do not match.])
    fi
    if test "$_CC_MAJOR_VERSION" = "12"; then
        _CC_SUITE=6
    elif test "$_CC_MAJOR_VERSION" = "13"; then
        _CC_SUITE=7
    else
        AC_MSG_ERROR([This version of the MSVC compiler, $_CC_FULL_VERSION , is unsupported.])
    fi

    # Check linker version
    _LD_FULL_VERSION=`"${LD}" -v 2>&1 | grep Version | sed -e 's|.* Version ||' | sed -e 's|[ ]*$||'`
    _LD_MAJOR_VERSION=`echo ${_LD_FULL_VERSION} | awk -F\. '{ print $ 1 }'`
    if test "$_LD_MAJOR_VERSION" != "$_CC_SUITE"; then
        AC_MSG_ERROR([The linker major version, $_LD_FULL_VERSION,  does not match the compiler suite version, $_CC_SUITE.])
    fi

    # Check midl version
    _MIDL_FULL_VERSION=`"${MIDL}" -v 2>&1 | grep Version | sed -e 's|.* Version ||' | sed -e 's|[ ]*$||'`
    _MIDL_MAJOR_VERSION=`echo ${_MIDL_FULL_VERSION} | awk -F\. '{ print $ 1 }'`
    _MIDL_MINOR_VERSION=`echo ${_MIDL_FULL_VERSION} | awk -F\. '{ print $ 2 }'`
    _MIDL_REV_VERSION=`echo ${_MIDL_FULL_VERSION} | awk -F\. '{ print $ 3 }'`
    if test "$_MIDL_MAJOR_VERSION" != "5" -a "$_MIDL_FULL_VERSION" != "6.00.0347"; then
        AC_MSG_ERROR([Midl version $_MIDL_FULL_VERSION was found.  Midl version must be 5.x.x (VC6*) or 6.00.0347 (VC7).])
    fi
    ;;
esac

if test -n "$_WIN32_MSVC"; then
    SKIP_PATH_CHECKS=1
    SKIP_COMPILER_CHECKS=1
    SKIP_LIBRARY_CHECKS=1
    AC_CHECK_HEADERS(mmintrin.h)
fi

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

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

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

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

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

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

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

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

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

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

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

if test -z "$SKIP_PATH_CHECKS"; then
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, $PERL perl5 perl )
if test -z "$PERL" || test "$PERL" = ":"; then
    AC_MSG_ERROR([perl not found in \$PATH])
fi

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

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

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

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

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

AC_PROG_MAKE_SET

AC_PATH_XTRA

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

XCFLAGS="$X_CFLAGS"

fi # SKIP_PATH_CHECKS

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

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

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

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

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

MOZ_ENABLE_POSTSCRIPT=1 

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

#######################################################################
# Master "Core Components" macros for getting the OS target           #
#######################################################################

#
# Note: OS_TARGET should be specified on the command line for gmake.
# When OS_TARGET=WIN95 is specified, then a Windows 95 target is built.
# The difference between the Win95 target and the WinNT target is that
# the WinNT target uses Windows NT specific features not available
# in Windows 95. The Win95 target will run on Windows NT, but (supposedly)
# at lesser performance (the Win95 target uses threads; the WinNT target
# uses fibers).
#
# When OS_TARGET=WIN16 is specified, then a Windows 3.11 (16bit) target
# is built. See: win16_3.11.mk for lots more about the Win16 target.
#
# If OS_TARGET is not specified, it defaults to $(OS_ARCH), i.e., no
# cross-compilation.
#

#
# The following hack allows one to build on a WIN95 machine (as if
# s/he were cross-compiling on a WINNT host for a WIN95 target).
# It also accomodates for MKS's uname.exe.  If you never intend
# to do development on a WIN95 machine, you don't need this hack.
#
if test "$OS_ARCH" = "WIN95"; then
    OS_ARCH=WINNT
    OS_TARGET=WIN95
elif test "$OS_ARCH" = 'Windows_95'; then
    OS_ARCH=Windows_NT
    OS_TARGET=WIN95
elif test "$OS_ARCH" = 'Windows_98'; then
    OS_ARCH=Windows_NT
    OS_TARGET=WIN95
elif test "`echo $OS_ARCH | egrep -c '^(CYGWIN_9|CYGWIN_ME)' 2>/dev/null`" != 0; then
    OS_ARCH='CYGWIN_NT-4.0'
    OS_TARGET=WIN95
elif test "$OS_ARCH" = "OS_2"; then
    OS_ARCH=OS2
    OS_TARGET=OS2
fi

#
# On WIN32, we also define the variable CPU_ARCH.
#

if test "$OS_ARCH" = "WINNT"; then
    CPU_ARCH=`uname -p`
    if test "$CPU_ARCH" = "I386"; then
        CPU_ARCH=x86
    fi
elif test "$OS_ARCH" = "Windows_NT"; then
#
# If uname -s returns "Windows_NT", we assume that we are using
# the uname.exe in MKS toolkit.
#
# The -r option of MKS uname only returns the major version number.
# So we need to use its -v option to get the minor version number.
# Moreover, it doesn't have the -p option, so we need to use uname -m.
#
    OS_ARCH=WINNT
    OS_TARGET=WINNT
    OS_MINOR_RELEASE=`uname -v`
    if test "$OS_MINOR_RELEASE" = "00"; then
        OS_MINOR_RELEASE=0
    fi
    OS_RELEASE="${OS_RELEASE}.${OS_MINOR_RELEASE}"
    CPU_ARCH=`uname -m`
    #
    # MKS's uname -m returns "586" on a Pentium machine.
    #
    if echo "$CPU_ARCH" | grep -c 86 >/dev/null; then
        CPU_ARCH=x86
    fi
elif echo "$OS_ARCH" | grep -c CYGWIN_NT >/dev/null; then
#
# If uname -s returns "CYGWIN_NT-4.0", we assume that we are using
# the uname.exe in the Cygwin tools.
#
    OS_RELEASE=`echo $OS_ARCH | sed 's|^CYGWIN_NT-||'`
    OS_ARCH=WINNT
    OS_TARGET=WINNT
    CPU_ARCH=`uname -m`
    #
    # Cygwin's uname -m returns "i686" on a Pentium Pro machine.
    #
    if echo "$CPU_ARCH" | grep -c 86 >/dev/null; then
        CPU_ARCH=x86
    fi
elif test "$OS_ARCH" = "CYGWIN32_NT"; then
#
# Prior to the Beta 20 release, Cygwin was called GNU-Win32.
# If uname -s returns "CYGWIN32/NT", we assume that we are using
# the uname.exe in the GNU-Win32 tools.
#
    OS_ARCH=WINNT
    OS_TARGET=WINNT
    CPU_ARCH=`uname -m`
    #
    # GNU-Win32's uname -m returns "i686" on a Pentium Pro machine.
    #
    if echo "$CPU_ARCH" | grep -c 86 >/dev/null; then
        CPU_ARCH=x86
    fi
fi

if test -z "$OS_TARGET"; then
    OS_TARGET=$OS_ARCH
fi
if test "$OS_TARGET" = "WIN95"; then
    OS_RELEASE="4.0"
fi
if test "$OS_TARGET" = "WIN16"; then
    OS_RELEASE=
fi
OS_CONFIG="${OS_TARGET}${OS_RELEASE}"

dnl ========================================================
dnl GNU specific defaults
dnl ========================================================
if test "$GNU_CC"; then
    MKSHLIB='$(CXX) $(CXXFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -o $@'
    MKCSHLIB='$(CC) $(CFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -o $@'
    DSO_LDOPTS='-shared -Wl,-h -Wl,$@'
    DSO_CFLAGS=''
    DSO_PIC_CFLAGS='-fPIC'
    _MOZ_RTTI_FLAGS_ON=${_COMPILER_PREFIX}-frtti
    _MOZ_RTTI_FLAGS_OFF=${_COMPILER_PREFIX}-fno-rtti
    _MOZ_EXCEPTIONS_FLAGS_ON='-fhandle-exceptions'
    _MOZ_EXCEPTIONS_FLAGS_OFF='-fno-handle-exceptions'

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

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

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

if test "$GNU_CXX"; then
    # Turn on GNU specific features
    _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Wall -Wconversion -Wpointer-arith -Wcast-align -Woverloaded-virtual -Wsynth -Wno-ctor-dtor-privacy"

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

    _DEFINES_CXXFLAGS='-DMOZILLA_CLIENT -include $(DEPTH)/mozilla-config.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 "$host" in
*-beos*)
    HOST_CFLAGS="$HOST_CFLAGS -DXP_BEOS -DBeOS -DBEOS -D_POSIX_SOURCE -DNO_X11"
    HOST_NSPR_MDCPUCFG='\"md/_beos.cfg\"'
    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O3}"
    ;;

*cygwin*|*mingw*|*mksnt*|*msvc*)
    HOST_CFLAGS="$HOST_CFLAGS -TC -nologo -DXP_PC -DXP_WIN32 -DXP_WIN -DWIN32 -D_WIN32 -DNO_X11"
    HOST_NSPR_MDCPUCFG='\"md/_winnt.cfg\"'
    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O2}"
    ;;

*-darwin*)
    HOST_CFLAGS="$HOST_CFLAGS -DXP_UNIX -DXP_MACOSX -DNO_X11"
    HOST_NSPR_MDCPUCFG='\"md/_darwin.cfg\"'
    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O3}"
    ;;

*-linux*)
    HOST_CFLAGS="$HOST_CFLAGS -DXP_UNIX"
    HOST_NSPR_MDCPUCFG='\"md/_linux.cfg\"'
    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O3}"
    ;;

*os2*)
    HOST_CFLAGS="$HOST_CFLAGS -DXP_OS2 -DNO_X11"
    HOST_NSPR_MDCPUCFG='\"md/_winnt.cfg\"'
    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O2}"
    ;;

*-osf*)
    HOST_CFLAGS="$HOST_CFLAGS -DXP_UNIX"
    HOST_NSPR_MDCPUCFG='\"md/_osf1.cfg\"'
    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O2}"
    ;;

*)
    HOST_CFLAGS="$HOST_CFLAGS -DXP_UNIX"
    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O2}"
    ;;
esac

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

*-beos*)
    no_x=yes
    MKSHLIB='$(CXX) $(CXXFLAGS) $(DSO_LDOPTS) -o $@'
    _PLATFORM_DEFAULT_TOOLKIT="beos"
    DSO_LDOPTS='-nostart -Wl,-h -Wl,$@'
    TK_LIBS='-lbe -lroot'
    LIBS="$LIBS -lbe"
    AC_CHECK_LIB(bind,main,LIBS="$LIBS -lbind")
    _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Wno-multichar"
    _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Wno-multichar"
    _MOZ_USE_RTTI=1
    ;;

*-bsdi*)
    dnl -pedantic doesn't play well with BSDI's _very_ modified gcc (shlicc2)
    _PEDANTIC=
    _IGNORE_LONG_LONG_WARNINGS=
    case $OS_RELEASE in
	4.*|5.*)
            STRIP="$STRIP -d"
            ;;
	*)
	    DSO_CFLAGS=''
	    DSO_LDOPTS='-r'
	    _WARNINGS_CFLAGS="-Wall"
	    _WARNINGS_CXXFLAGS="-Wall"
	    # The test above doesn't work properly, at least on 3.1.
	    MKSHLIB_FORCE_ALL=''
	    MKSHLIB_UNFORCE_ALL=''
	;;
    esac
    ;;

*-darwin*) 
    _PEDANTIC=
    CFLAGS="$CFLAGS -fpascal-strings -traditional-cpp -fno-common"
    CXXFLAGS="$CXXFLAGS -fpascal-strings -traditional-cpp -fno-common"
    DLL_SUFFIX=".dylib"
    DSO_LDOPTS=''
    STRIP="$STRIP -x -S"
    case "${target_cpu}" in
    powerpc*)
        AC_DEFINE(XP_MACOSX)
        AC_DEFINE(TARGET_CARBON)
        AC_DEFINE(TARGET_API_MAC_CARBON)
        no_x=yes
        MACOSX=1
        _PLATFORM_DEFAULT_TOOLKIT='mac'
        DSO_LDOPTS="$DSO_LDOPTS -arch ppc"
        TK_LIBS='-framework Carbon /System/Library/Frameworks/Carbon.framework/Carbon'
        TK_CFLAGS="-I/Developer/Headers/FlatCarbon -F/System/Library/Frameworks"
        CFLAGS="$CFLAGS $TK_CFLAGS"
        CXXFLAGS="$CXXFLAGS $TK_CFLAGS"
        MOZ_ENABLE_POSTSCRIPT=
        ;;
    esac
    ;;

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

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

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

*-irix6*)
    AC_DEFINE(IRIX)
    dnl the irix specific xptcinvoke code is written against the n32 ABI so we *must* 
    dnl compile and link using -n32
    USE_N32=1
    DSO_LDOPTS='-elf -shared'
    MKSHLIB='$(CCC) $(CXXFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -o $@'
    MKCSHLIB='$(CC) $(CFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -o $@'
    _MOZ_EXCEPTIONS_FLAGS_OFF="-LANG:exceptions=OFF"
    _MOZ_EXCEPTIONS_FLAGS_ON="-LANG:exceptions=ON"
    if test "$GNU_CC"; then
       MKSHLIB_FORCE_ALL='-Wl,-all'
       MKSHLIB_UNFORCE_ALL='-Wl,-none'
       _WARNINGS_CFLAGS="-Wall"
       _WARNINGS_CXXFLAGS="-Wall"
       CXXFLAGS="$CXXFLAGS -D_LANGUAGE_C_PLUS_PLUS"
    else
       MKSHLIB_FORCE_ALL='-all'
       MKSHLIB_UNFORCE_ALL='-none'
	   AR_LIST="$AR t"
	   AR_EXTRACT="$AR x"
	   AR_DELETE="$AR d"
	   AR='$(CXX) -ar'
	   AR_FLAGS='-o $@'
       CFLAGS="$CFLAGS -woff 3262 -G 4"
       CXXFLAGS="$CXXFLAGS -woff 3262 -G 4"
       if test -n "$USE_N32"; then
	   ASFLAGS="$ASFLAGS -n32"
	   CFLAGS="$CFLAGS -n32"
	   CXXFLAGS="$CXXFLAGS -n32"
	   LDFLAGS="$LDFLAGS -n32"
       fi
       AC_DEFINE(NSCAP_DISABLE_DEBUG_PTR_TYPES)
    fi
    if test -z "$GNU_CXX"; then
      MIPSPRO_CXX=1
    fi
    ;;

*-*linux*)
    AC_DEFINE(_POSIX_SOURCE)
    AC_DEFINE(_SVID_SOURCE)
    TARGET_NSPR_MDCPUCFG='\"md/_linux.cfg\"'
    MOZ_DEBUG_FLAGS="-g -fno-inline"  # most people on linux use gcc/gdb,
                                      # and that combo is not yet good at
                                      # debugging inlined functions (even
                                      # when using DWARF2 as the debugging
                                      # format)    

    case "${target_cpu}" in
    alpha*)
    	CFLAGS="$CFLAGS -mieee"
    	CXXFLAGS="$CXXFLAGS -mieee"
    ;;
    i?86)
    	USE_ELF_DYNSTR_GC=1
        MOZ_ENABLE_OLD_ABI_COMPAT_WRAPPERS=1
    ;;
    mips*)
        CFLAGS="$CFLAGS -Wa,-xgot"
        CXXFLAGS="$CXXFLAGS -Wa,-xgot"
    ;;
    esac
    ;;

*-mingw*|*-cygwin*|*-msvc*|*-mksnt*)
    if test -n "$GNU_CC"; then
        AC_DEFINE(WIN32_LEAN_AND_MEAN)
        AC_DEFINE(NONAMELESSUNION)
        CFLAGS="$(CFLAGS) -fvtable-thunks"
        CXXFLAGS="$(CXXFLAGS) -fvtable-thunks"
        MKSHLIB='$(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=
    else
        CYGWIN_WRAPPER="sh ${srcdir}/build/cygwin-wrapper"
        if test "`echo ${srcdir} | grep -c ^/ 2>/dev/null`" = 0; then
            _pwd=`pwd`
            CYGWIN_WRAPPER="sh ${_pwd}/${srcdir}/build/cygwin-wrapper"
        fi
        HOST_CC='$(CC)'
        HOST_CXX='$(CXX)'
        HOST_LD='$(LD)'
        AR='lib -NOLOGO -OUT:"$@"'
        AR_FLAGS=
        RANLIB='echo not_ranlib'
        STRIP='echo not_strip'
        RC='$(CYGWIN_WRAPPER) rc.exe'
        PERL=perl
        _WIN32_PERL=$PERL
        if test "`${PERL} -v | grep -c cygwin  2>/dev/null`" != 0; then
            PERL="${CYGWIN_WRAPPER} -up ${PERL}"
            _CYGWIN_PERL=1
        fi
        XARGS=xargs
        ZIP=zip
        UNZIP=unzip
        DOXYGEN=:
        GARBAGE='$(OBJDIR)/vc20.pdb $(OBJDIR)/vc40.pdb'
        LIB_PREFIX=
    	OBJ_SUFFIX=obj
    	LIB_SUFFIX=lib
    	DLL_SUFFIX=.dll
        MKSHLIB='$(LD) /NOLOGO /DLL /OUT:$@ /PDB:$(PDBFILE) $(DSO_LDOPTS)'
        MKCSHLIB='$(LD) /NOLOGO /DLL /OUT:$@ /PDB:$(PDBFILE) $(DSO_LDOPTS)'
        MKSHLIB_FORCE_ALL=
        MKSHLIB_UNFORCE_ALL=
        DSO_LDOPTS=/SUBSYSTEM:WINDOWS
        DSO_CFLAGS=
        DSO_PIC_CFLAGS=
        CFLAGS="$CFLAGS -W3 -nologo -Gy -Fd\$(PDBFILE)"
        CXXFLAGS="$CXXFLAGS -W3 -nologo -Gy -Fd\$(PDBFILE)"
        LIBS="$LIBS kernel32.lib user32.lib gdi32.lib winmm.lib wsock32.lib advapi32.lib"
        MOZ_DEBUG_FLAGS='-Zi'
        MOZ_DEBUG_LDFLAGS='/DEBUG /DEBUGTYPE:CV'
    	MOZ_OPTIMIZE_FLAGS='-O1'
        MOZ_JPEG_LIBS='$(DIST)/lib/jpeg$(MOZ_BITS)$(VERSION_NUMBER).lib'
        MOZ_ZLIB_LIBS='$(DIST)/lib/zlib.lib'
        MOZ_PNG_LIBS='$(DIST)/lib/png.lib'
        MOZ_MNG_LIBS='$(DIST)/lib/mng.lib'
        MOZ_JS_LIBS='$(DIST)/lib/js$(MOZ_BITS)$(VERSION_NUMBER).lib'
        XPCOM_LIBS='$(DIST)/lib/xpcom.lib'
        MOZ_COMPONENT_NSPR_LIBS='$(NSPR_LIBS)'
        MOZ_COMPONENT_XPCOM_LIBS='$(XPCOM_LIBS)'
        WIDGET_DLL='\"gkwidget$(DLL_SUFFIX)\"'
        GFXWIN_DLL='\"gkgfxwin$(DLL_SUFFIX)\"'
    fi
    AC_DEFINE(_WINDOWS)
    AC_DEFINE(_WIN32)
    AC_DEFINE(WIN32)
    AC_DEFINE(XP_PC)
    AC_DEFINE(XP_WIN)
    AC_DEFINE(XP_WIN32)
    AC_DEFINE(HW_THREADS)
    AC_DEFINE_UNQUOTED(WINVER,0x400)
    AC_DEFINE(MSVC4)
    AC_DEFINE(STDC_HEADERS)
    AC_DEFINE(NEW_H, <new>)
    AC_DEFINE(WIN32_LEAN_AND_MEAN)
    TARGET_MD_ARCH=win32
    _PLATFORM_DEFAULT_TOOLKIT='windows'
    BIN_SUFFIX='.exe'
    USE_SHORT_LIBNAME=1
    MOZ_ENABLE_POSTSCRIPT=

    dnl Hardcode to win95 for now - cls
    TARGET_NSPR_MDCPUCFG='\"md/_win95.cfg\"'
    dnl set NO_X11 defines here as the general check is skipped on win32
    no_x=yes
    AC_DEFINE(NO_X11)

    dnl Remove cygwinism from MOZ_BUILD_ROOT
    MOZ_BUILD_ROOT=`cygpath -w $MOZ_BUILD_ROOT | sed -e 's|\\\\|/|g'`

    if test -z "$MOZ_TOOLS"; then
        AC_MSG_ERROR([MOZ_TOOLS is not set])
    fi

    MOZ_TOOLS_DIR=`cd $MOZ_TOOLS && pwd`
    if test "$?" != "0" || test -z "$MOZ_TOOLS_DIR"; then
        AC_MSG_ERROR([cd \$MOZ_TOOLS failed. MOZ_TOOLS ==? $MOZ_TOOLS])
    fi
    if test `echo ${PATH}: | grep -ic "$MOZ_TOOLS_DIR/bin:"` = 0; then
        AC_MSG_ERROR([\$MOZ_TOOLS\\bin must be in your path.])
    fi
    MOZ_TOOLS_DIR=`cygpath -w $MOZ_TOOLS_DIR | sed -e 's|\\\\|/|g'`

    if test -n "$GLIB_PREFIX"; then
        _GLIB_PREFIX_DIR=`cd $GLIB_PREFIX && pwd`
        if test "$?" = "0"; then
            if test `echo ${PATH}: | grep -ic "$_GLIB_PREFIX_DIR/bin:"` = 0; then
                AC_MSG_ERROR([GLIB_PREFIX must be in your \$PATH.])
            fi
            _GLIB_PREFIX_DIR=`cygpath -w $_GLIB_PREFIX_DIR | sed -e 's|\\\\|/|g'`
        else
            AC_MSG_ERROR([GLIB_PREFIX is set but "${GLIB_PREFIX}" is not a directory.])
        fi
    else
        _GLIB_PREFIX_DIR=$MOZ_TOOLS_DIR
    fi
    if test ! -f "${_GLIB_PREFIX_DIR}/include/glib.h"; then
        AC_MSG_ERROR([Cannot find $_GLIB_PREFIX_DIR/include/glib.h .])
    fi
    GLIB_CFLAGS="-I${_GLIB_PREFIX_DIR}/include"
    GLIB_LIBS="${_GLIB_PREFIX_DIR}/lib/glib-1.2.lib"

    if test -n "$LIBIDL_PREFIX"; then
        _LIBIDL_PREFIX_DIR=`cd $LIBIDL_PREFIX && pwd`
        if test "$?" = "0"; then
            if test `echo ${PATH}: | grep -ic "$_LIBIDL_PREFIX_DIR/bin:"` = 0; then
                AC_MSG_ERROR([LIBIDL_PREFIX must be in your \$PATH.])
            fi
            _LIBIDL_PREFIX_DIR=`cygpath -w $_LIBIDL_PREFIX_DIR | sed -e 's|\\\\|/|g'`
        else
            AC_MSG_ERROR([LIBIDL_PREFIX is set but "${LIBIDL_PREFIX}" is not a directory.])
        fi
    else
        _LIBIDL_PREFIX_DIR=$MOZ_TOOLS_DIR
    fi        
    if test ! -f "${_LIBIDL_PREFIX_DIR}/include/libIDL/IDL.h"; then
        AC_MSG_ERROR([Cannot find $_LIBIDL_PREFIX_DIR/include/libIDL/IDL.h .])
    fi
    LIBIDL_CFLAGS="-I${_LIBIDL_PREFIX_DIR}/include"
    LIBIDL_LIBS="${_LIBIDL_PREFIX_DIR}/lib/libidl-0.6.lib ${_GLIB_PREFIX_DIR}/lib/glib-1.2.lib"

    case "$target" in
    i?86-*)
    	AC_DEFINE(_X86_)
	;;
    alpha-*)
    	AC_DEFINE(_ALPHA_)
	;;
    mips-*)
    	AC_DEFINE(_MIPS_)
	;;
    *)
    	AC_DEFINE(_CPU_ARCH_NOT_DEFINED)
	;;
    esac
    ;;

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

*-nto*) 
	AC_DEFINE(NTO)	
	AC_DEFINE(_QNX_SOURCE)
	AC_DEFINE(_i386)
	OS_TARGET=NTO
	MOZ_OPTIMIZE_FLAGS="-O"
	MOZ_DEBUG_FLAGS="-gstabs"
	USE_PTHREADS=1
	_PEDANTIC=
	LIBS="$LIBS -lsocket -lstdc++"
	_DEFINES_CFLAGS='-Wp,-include -Wp,$(DEPTH)/mozilla-config.h -DMOZILLA_CLIENT -D_POSIX_C_SOURCE=199506'
	_DEFINES_CXXFLAGS='-DMOZILLA_CLIENT -Wp,-include -Wp,$(DEPTH)/mozilla-config.h -D_POSIX_C_SOURCE=199506'
	if test "$with_x" != "yes"
	then
		_PLATFORM_DEFAULT_TOOLKIT="photon"
    	AC_DEFINE(NO_X11)
	    TK_CFLAGS='-I/usr/include/photon'
		TK_LIBS='-lph'
		no_x="yes"
	fi
	case "${target_cpu}" in
	ppc*)
	AC_DEFINE(HAVE_VA_LIST_AS_ARRAY)	
	;;
	esac
	case "${host_cpu}" in
	i?86)
	USE_ELF_DYNSTR_GC=1
	;;
	esac
	;;

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

*-openvms*) 
    if test "$OS_TARGET" = "POSIX_for_OpenVMS_AXP"; then
	dnl Hack...
	_OPENVMS_CROSS_COMPILE=1
    fi
    AC_DEFINE(NO_PW_GECOS)
    AC_DEFINE(NO_UDSOCK)
    AC_DEFINE(POLL_WITH_XCONNECTIONNUMBER)
    USE_PTHREADS=1
    MKSHLIB_FORCE_ALL='-all'
    MKSHLIB_UNFORCE_ALL='-none'
    ;;


*-*-os2*)
    MOZ_BUILD_ROOT=`pwd -D`
    USE_SHORT_LIBNAME=1
    BIN_SUFFIX='.exe'
    OBJ_SUFFIX=obj
    LIB_SUFFIX=lib
    DLL_SUFFIX=.dll
    ASM_SUFFIX=asm
    DLLTOOL=''
    LD='$(CC)'
    DSO_CFLAGS=''
    DSO_PIC_CFLAGS=''
    OS_ARCH=OS2
    OS_TARGET=OS2
    _PLATFORM_DEFAULT_TOOLKIT=os2
    MOZ_WIDGET_TOOLKIT_LDFLAGS='$(DIST)/lib/wdgt$(MOZ_WIDGET_TOOLKIT)'
    MOZ_GFX_TOOLKIT_LDFLAGS='$(DIST)/lib/gfx_$(MOZ_WIDGET_TOOLKIT)'
    WIDGET_DLL='\"wdgt$(MOZ_WIDGET_TOOLKIT)$(DLL_SUFFIX)\"'
    GFXWIN_DLL='\"gfx_$(MOZ_GFX_TOOLKIT)$(DLL_SUFFIX)\"'
    MOZ_ENABLE_POSTSCRIPT=
    RC=rc.exe
    RCFLAGS='-n -x2'

    if test "$MOZTOOLS"; then
        MOZ_TOOLS_DIR=`echo $MOZTOOLS | sed -e 's|\\\\|/|g'`
    else
        AC_MSG_ERROR([MOZTOOLS is not set])
    fi

    # EMX/GCC build
    if test "$GNU_CC"; then
        _PEDANTIC=''
        AR=emxomfar
        AR_FLAGS='-p256 r $@'
        CFLAGS="-Zmtd -Zomf $CFLAGS"
        CXXFLAGS="-Zmtd -Zomf $CXXFLAGS"
        DSO_LDOPTS='-Zomf -Zdll -Zmt -Zcrtdll -Zlinker /NOO'
        BIN_FLAGS='-Zlinker /PM:VIO -Zlinker /ST:0x30000'
        IMPLIB='emximp -o'
        FILTER='emxexp'
        LIB_PREFIX=lib
        AC_DEFINE(OS2)
        AC_DEFINE(XP_OS2_EMX)
        AC_DEFINE(OS2EMX_PLAIN_CHAR)
        MOZ_COMPONENT_NSPR_LIBS='-L$(DIST)/lib $(NSPR_LIBS)'
        MOZ_COMPONENT_XPCOM_LIBS='-L$(DIST)/lib $(DIST)/lib/xpcom.lib'
        XPCOM_LIBS='-L$(DIST)/lib -lxpcom'
        MOZ_JS_LIBS='$(DIST)/lib/libmozjs.lib'
        MOZ_COMPONENT_XPCOM_LIBS='$(DIST)/lib/libxpcom.lib'
        XPCOM_LIBS='$(DIST)/lib/libxpcom.lib'
        MOZ_JPEG_LIBS='$(DIST)/lib/libmozjpeg.$(LIB_SUFFIX)'
        MOZ_ZLIB_LIBS='$(DIST)/lib/libmozz.$(LIB_SUFFIX)'
        MOZ_PNG_LIBS='$(DIST)/lib/libmozpng.$(LIB_SUFFIX)'
        MOZ_MNG_LIBS='$(DIST)/lib/libmozmng.$(LIB_SUFFIX)'
    fi

    # Visual Age C++ build
    if test "$VACPP" = "yes"; then
#        MOZ_BUILD_ROOT="$ROOT"`pwd -D`
        AR=-ilib
        AR_FLAGS='/NOL /NOI /O:$(subst /,\\,$@)'
        AR_LIST='/L'
        AR_EXTRACT='-*'
        AR_DELETE='-'
        AS=alp
        ASFLAGS='-Mb'
        AS_DASH_C_FLAG=''
        LD='-ilink'
        TARGET_MD_ARCH=os2
        CFLAGS="/Q /qlibansi /Gm+ /Su4 /Mp /Tl9"
        CXXFLAGS="/Q /qlibansi /Gm+ /Su4 /Mp /Tl9 /Gx+"
        MOZ_DEBUG_FLAGS="/Ti+"
        MOZ_OPTIMIZE_FLAGS="/O+ /qtune=pentium /qarch=pentium"
        LDFLAGS="/NOL /M"
        MOZ_DEBUG_LDFLAGS="/DE"
        MOZ_OPTIMIZE_LDFLAGS="/EXEPACK:2 /PACKCODE /PACKDATA"
        DSO_LDOPTS=''
        IMPLIB='implib /NOL /NOI'
        FILTER='cppfilt -q -B -P'
        LIB_PREFIX=
        AC_DEFINE(NO_ANSI_KEYWORDS)
        AC_DEFINE(OS2,4)
        AC_DEFINE(_X86_)
        AC_DEFINE(XP_OS2_VACPP)
        AC_DEFINE(TCPV40HDRS)
        AC_DEFINE(NSCAP_DISABLE_DEBUG_PTR_TYPES)
        AC_DEFINE(STDC_HEADERS)
        MOZ_COMPONENT_NSPR_LIBS='$(NSPR_LIBS)'
        MKSHLIB='$(LD) $(DSO_LDOPTS)'
        MKCSHLIB='$(LD) $(DSO_LDOPTS)'
        MOZ_JS_LIBS='$(DIST)/lib/mozjs.lib'
        MOZ_COMPONENT_XPCOM_LIBS='$(DIST)/lib/xpcom.lib'
        XPCOM_LIBS='$(DIST)/lib/xpcom.lib'
        MOZ_JPEG_LIBS='$(DIST)/lib/mozjpeg.$(LIB_SUFFIX)'
        MOZ_ZLIB_LIBS='$(DIST)/lib/mozz.$(LIB_SUFFIX)'
        MOZ_PNG_LIBS='$(DIST)/lib/mozpng.$(LIB_SUFFIX)'
        MOZ_MNG_LIBS='$(DIST)/lib/mozmng.$(LIB_SUFFIX)'
    fi
    ;;

alpha*-*-osf*)
    if test "$GNU_CC"; then
	DSO_LDOPTS='-shared -Wl,-soname -Wl,$@'
    else
	MOZ_DEBUG_FLAGS='-g3'
	ASFLAGS='-I$(topsrcdir)/xpcom/reflect/xptcall/public -g -std1'
	CFLAGS="$CFLAGS -std1 -ieee"
	CXXFLAGS="$CXXFLAGS "'-noexceptions -ieee  -ptr $(DIST)/cxx_repository'
	DSO_LDOPTS='-shared -msym -expect_unresolved \* -soname $@ -update_registry $(DIST)/so_locations'
	DSO_CFLAGS=
	DSO_PIC_CFLAGS=
	MKCSHLIB='$(CC) $(CFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -o $@'
	MKSHLIB='$(CXX) $(CXXFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -o $@'
	MKSHLIB_FORCE_ALL='-all'
	MKSHLIB_UNFORCE_ALL='-none'
	dnl Might fix the libxpcom.so breakage on this platform as well....
	AC_DEFINE(NSCAP_DISABLE_TEST_DONTQUERY_CASES)
	AC_DEFINE(NSCAP_DISABLE_DEBUG_PTR_TYPES)
    fi
    if test -z "$GNU_CXX"; then
      COMPAQ_CXX=1
    fi
    AC_DEFINE(NEED_USLEEP_PROTOTYPE)
    ;;

*-qnx*) 
    DIRENT_INO=d_stat.st_ino
    dnl Solves the problems the QNX compiler has with nsCOMPtr.h.
    AC_DEFINE(NSCAP_DISABLE_TEST_DONTQUERY_CASES)
    AC_DEFINE(NSCAP_DISABLE_DEBUG_PTR_TYPES)
    dnl Explicit set STDC_HEADERS to workaround QNX 6.0's failing of std test
    AC_DEFINE(STDC_HEADERS)
    if test "$no_x" = "yes"; then
	    _PLATFORM_DEFAULT_TOOLKIT='photon'
	    TK_CFLAGS='-I/usr/nto/include/photon'
	    TK_LIBS='-lphoton -lphrender'
	    AC_DEFINE(NO_X11)
    fi
    ;;

*-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(SOLARIS)
    TARGET_NSPR_MDCPUCFG='\"md/_solaris32.cfg\"'
    SYSTEM_MAKEDEPEND=
    if test -z "$GNU_CC"; then
       NS_USE_NATIVE=1
       AC_DEFINE(NSCAP_DISABLE_DEBUG_PTR_TYPES)
       CFLAGS="$CFLAGS -xstrconst -xbuiltin=%all"
       CXXFLAGS="$CXXFLAGS -xbuiltin=%all"
       LDFLAGS="-xildoff -zlazyload -zcombreloc $LDFLAGS"
       MOZ_OPTIMIZE_FLAGS="-xO4"
       MKSHLIB='$(CXX) $(CXXFLAGS) $(DSO_PIC_FLAGS) $(DSO_LDOPTS) -o $@'
       MKCSHLIB='$(CC) $(CFLAGS) $(DSO_PIC_FLAGS) $(DSO_LDOPTS) -o $@'
       MKSHLIB_FORCE_ALL='-Qoption ld -z,allextract'
       MKSHLIB_UNFORCE_ALL=''
       DSO_LDOPTS='-G -Qoption ld -z,muldefs -h $@'
       AR_LIST="$AR t"
       AR_EXTRACT="$AR x"
       AR_DELETE="$AR d"
       AR='$(CXX) -xar'
       AR_FLAGS='-o $@'
       AS='/usr/ccs/bin/as'
       ASFLAGS="$ASFLAGS -K PIC -L -P -D_ASM -D__STDC__=0"
       AS_DASH_C_FLAG=''
    else
       ASFLAGS="$ASFLAGS -fPIC"
       DSO_LDOPTS='-G -h $@'
       _WARNINGS_CFLAGS=''
       _WARNINGS_CXXFLAGS=''
       if test "$OS_RELEASE" = "5.3"; then
	  AC_DEFINE(MUST_UNDEF_HAVE_BOOLEAN_AFTER_INCLUDES)
       fi
    fi
    if test "$OS_RELEASE" = "5.5.1"; then
       AC_DEFINE(NEED_USLEEP_PROTOTYPE)
    fi
    ;;

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

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

esac

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

dnl ========================================================
dnl Any platform that doesn't have MKSHLIB_FORCE_ALL defined
dnl by now will not have any way to link most binaries (tests
dnl as well as viewer, apprunner, etc.), because some symbols
dnl will be left out of the "composite" .so's by ld as unneeded.
dnl So, by defining NO_LD_ARCHIVE_FLAGS for these platforms,
dnl they can link in the static libs that provide the missing
dnl symbols.
dnl ========================================================
NO_LD_ARCHIVE_FLAGS=
if test -z "$MKSHLIB_FORCE_ALL" || test -z "$MKSHLIB_UNFORCE_ALL"; then
    NO_LD_ARCHIVE_FLAGS=1
fi
case "$target" in
*-*-os2*)
    NO_LD_ARCHIVE_FLAGS=
    ;;
*-aix4.3*|*-aix5*)
    NO_LD_ARCHIVE_FLAGS=
    ;;
*-openvms*)
    NO_LD_ARCHIVE_FLAGS=
    ;;
*-msvc*|*-mksnt*|*-mingw*|*-cygwin*)
    if test -z "$GNU_CC"; then
        NO_LD_ARCHIVE_FLAGS=
    fi
    ;;
esac
AC_SUBST(NO_LD_ARCHIVE_FLAGS)

dnl
dnl Indicate that platform requires special thread safe 
dnl locking when starting up the OJI JVM 
dnl (see mozilla/modules/oji/src/nsJVMManager.cpp)
dnl ========================================================
case "$target" in
    *-hpux*)      
        AC_DEFINE(MOZ_OJI_REQUIRE_THREAD_SAFE_ON_STARTUP)
        ;;
esac


dnl ========================================================
dnl = Flags to strip unused symbols from .so components
dnl ========================================================
case "$target" in
    *-linux*)
        MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS='-Wl,--version-script -Wl,$(BUILD_TOOLS)/gnu-ld-scripts/components-version-script'
        ;;
    *-solaris*)
        if test -z "$GNU_LD"; then
         if test -z "$GNU_CC"; then
          MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS='-M $(BUILD_TOOLS)/gnu-ld-scripts/components-mapfile'
         else
          MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS='-Wl,-M -Wl,$(BUILD_TOOLS)/gnu-ld-scripts/components-mapfile'
         fi
        fi
        ;;
    *-nto*) 
        MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS='-Wl,--version-script,$(BUILD_TOOLS)/gnu-ld-scripts/components-version-script'
        ;;
esac

if test -z "$SKIP_COMPILER_CHECKS"; then
dnl Checks for typedefs, structures, and compiler characteristics.
dnl ========================================================
AC_LANG_C
AC_HEADER_STDC
AC_C_CONST
AC_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_TYPE_UID_T
AC_STRUCT_ST_BLKSIZE
AC_MSG_CHECKING(for siginfo_t)
AC_CACHE_VAL(ac_cv_siginfo_t,
 [AC_TRY_COMPILE([#define _POSIX_C_SOURCE 199506L
                  #include <signal.h>],
                 [siginfo_t* info;],
                 [ac_cv_siginfo_t=true],
                 [ac_cv_siginfo_t=false])])
if test "$ac_cv_siginfo_t" = true ; then
  AC_DEFINE(HAVE_SIGINFO_T)
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi

dnl Visual Age for os/2 also defines size_t and off_t in certain 
dnl  header files.  These defines make Visual Age use the mozilla
dnl  defines types.
if test "$VACPP" = "yes"; then
   AC_DEFINE(__size_t)
   AC_DEFINE(__off_t)
fi

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 "$ac_cv_uint" = true ; then
  AC_DEFINE(HAVE_UINT)
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi
AC_MSG_CHECKING(for uint_t)
AC_CACHE_VAL(ac_cv_uint_t,
 [AC_TRY_COMPILE([#include <stdio.h>
                  #include <sys/types.h>],
                 [uint_t foo = 0;],
                 [ac_cv_uint_t=true],
                 [ac_cv_uint_t=false])])
if test "$ac_cv_uint_t" = true ; then
  AC_DEFINE(HAVE_UINT_T)
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi
AC_MSG_CHECKING(for uint16_t)
AC_CACHE_VAL(ac_cv_uint16_t,
 [AC_TRY_COMPILE([#include <stdio.h>
                  #include <sys/types.h>],
                 [uint16_t foo = 0;],
                 [ac_cv_uint16_t=true],
                 [ac_cv_uint16_t=false])])
if test "$ac_cv_uint16_t" = true ; then
  AC_DEFINE(HAVE_UINT16_T)
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi

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

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

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

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

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

AC_LANG_C

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

if test "$HAVE_64BIT_OS"; then
	case "$target_os" in
	solaris*) TARGET_NSPR_MDCPUCFG='\"md/_solaris64.cfg\"' ;;
	esac
fi

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

AC_CACHE_CHECK(for usable wchar_t (2 bytes, unsigned),
    ac_cv_have_usable_wchar,
    [AC_TRY_RUN([#include <stddef.h>
                 int main () {
                   return (sizeof(wchar_t) != 2) ||
                          (wchar_t)-1 < (wchar_t) 0 ; } ],
                ac_cv_have_usable_wchar="yes",
                ac_cv_have_usable_wchar="no",
                ac_cv_have_usable_wchar="maybe")])
if test "$ac_cv_have_usable_wchar" = "yes"; then
    AC_DEFINE(HAVE_CPP_2BYTE_WCHAR_T)
    HAVE_CPP_2BYTE_WCHAR_T=1
else
dnl This is really gcc-only
dnl Do this test using CXX only since some versions of gcc
dnl 2.95-2.97 have a signed wchar_t in c++ only and some versions
dnl only have short-wchar support for c++.
dnl Note that we assume that mac & win32 have short wchar (see nscore.h)

    AC_LANG_SAVE
    AC_LANG_CPLUSPLUS
    _SAVE_CXXFLAGS=$CXXFLAGS
    CXXFLAGS="$CXXFLAGS -fshort-wchar"

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

    if test "$ac_cv_have_usable_wchar_option" = "yes"; then
        AC_DEFINE(HAVE_CPP_2BYTE_WCHAR_T)
        HAVE_CPP_2BYTE_WCHAR_T=1
    else    
        CXXFLAGS=$_SAVE_CXXFLAGS
    fi
    AC_LANG_RESTORE
fi

dnl check for wcrtomb/mbrtowc
dnl =======================================================================

AC_LANG_CPLUSPLUS
AC_CACHE_CHECK(for wcrtomb,
    ac_cv_have_wcrtomb,
    [AC_TRY_LINK([#include <wchar.h>],
                 [mbstate_t ps={0};wcrtomb(0,'f',&ps);],
                 ac_cv_have_wcrtomb="yes",
                 ac_cv_have_wcrtomb="no")])
if test "$ac_cv_have_wcrtomb" = "yes"; then
    AC_DEFINE(HAVE_WCRTOMB)
fi
AC_CACHE_CHECK(for mbrtowc,
    ac_cv_have_mbrtowc,
    [AC_TRY_LINK([#include <wchar.h>],
                 [mbstate_t ps={0};mbrtowc(0,0,0,&ps);],
                 ac_cv_have_mbrtowc="yes",
                 ac_cv_have_mbrtowc="no")])
if test "$ac_cv_have_mbrtowc" = "yes"; then
    AC_DEFINE(HAVE_MBRTOWC)
fi
AC_LANG_C

dnl Checks for header files.
dnl ========================================================
AC_HEADER_DIRENT
dnl -ldir is a noop for OS/2
case "$target_os" in
os2*)
    LIBS=
    ;;
freebsd*)
# for stuff like -lXshm
    CPPFLAGS="${CPPFLAGS} ${X_CFLAGS}"
    ;;
esac
AC_CHECK_HEADERS(sys/byteorder.h compat.h getopt.h)
AC_CHECK_HEADERS(sys/bitypes.h memory.h unistd.h)
AC_CHECK_HEADERS(gnu/libc-version.h nl_types.h)
AC_CHECK_HEADERS(X11/XKBlib.h)

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

dnl Try for MMX support
AC_CHECK_HEADERS(mmintrin.h)

dnl Check whether the compiler supports the new-style C++ standard
dnl library headers (i.e. <new>) or needs the old "new.h"
AC_LANG_CPLUSPLUS
NEW_H=new.h
AC_CHECK_HEADER(new, [NEW_H=new])
AC_DEFINE_UNQUOTED(NEW_H, <$NEW_H>)
AC_LANG_C

case $target in
*-aix4.3*|*-aix5*)
	;;
*)
	AC_CHECK_HEADERS(sys/cdefs.h)
	;;
esac

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

    case $target in
    *-aix*)
	AC_CHECK_LIB(C_r, demangle)
	;;
     *)
	AC_CHECK_LIB(C, demangle)
	;;
     esac
fi
AC_CHECK_LIB(socket, socket)

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
    AC_DEFINE(NO_X11)
else
    AC_DEFINE_UNQUOTED(FUNCPROTO,15)
	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(Xt, XtFree, [ XT_LIBS="-lXt"], [
        unset ac_cv_lib_Xt_XtFree
	    AC_CHECK_LIB(ICE, IceFlush, [XT_LIBS="-lICE $XT_LIBS"],, $XT_LIBS $XLIBS)
	    AC_CHECK_LIB(SM, SmcCloseConnection, [XT_LIBS="-lSM $XT_LIBS"],, $XT_LIBS $XLIBS) 
        AC_CHECK_LIB(Xt, XtFree, [ XT_LIBS="-lXt $XT_LIBS"],
		    [MISSING_X="$MISSING_X -lXt"], $X_PRE_LIBS $XT_LIBS $XLIBS)
        ])

    # AIX needs the motif library linked before libXt to prevent
    # crashes in plugins linked against Motif - Bug #98892
    case "${target_os}" in
    aix*)
        XT_LIBS="-lXm $XT_LIBS"
        ;;
    esac

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

    dnl ========================================================
    dnl = Check for XShm
    dnl ========================================================
    AC_CHECK_LIB(Xext, XShmCreateImage, _HAVE_XSHM_XEXT=1,,
        $XLIBS $XEXT_LIBS)
    AC_CHECK_HEADER(X11/extensions/XShm.h)
    if test -n "$ac_cv_header_X11_extensions_XShm_h" &&
        test -n "$_HAVE_XSHM_XEXT"; then
        AC_DEFINE(HAVE_XSHM)
    fi

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

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

	LDFLAGS="$_SAVE_LDFLAGS"

    dnl ====================================================
    dnl = Check if X headers exist
    dnl ====================================================
    _SAVE_CFLAGS=$CFLAGS
    CFLAGS="$CFLAGS $XCFLAGS"
    AC_TRY_COMPILE([
        #include <stdio.h>
        #include <X11/Xlib.h>
    ],
    [
        Display *dpy = 0;
        if ((dpy = XOpenDisplay(NULL)) == NULL) {
            fprintf(stderr, ": can't open %s\en", XDisplayName(NULL));
            exit(1);
        }
    ], [], 
    [ AC_MSG_ERROR([Could not compile basic X program.]) ])
    CFLAGS="$_SAVE_CFLAGS"

fi # $no_x

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

dnl ========================================================
dnl = pthread support
dnl = Start by checking whether the system support pthreads
dnl ========================================================
MOZ_CHECK_PTHREADS(pthreads,
    USE_PTHREADS=1 _PTHREAD_LDFLAGS="-lpthreads",
    MOZ_CHECK_PTHREADS(pthread,
        USE_PTHREADS=1 _PTHREAD_LDFLAGS="-lpthread",
        MOZ_CHECK_PTHREADS(c_r,
            USE_PTHREADS=1 _PTHREAD_LDFLAGS="-lc_r",
            MOZ_CHECK_PTHREADS(c,
                USE_PTHREADS=1
            )
        )
    )
)

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

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 $? -eq 0; then
		if test -z "`egrep -i '(unrecognize|unknown)' conftest.out | grep pthread`" && test -z "`egrep -i '(error|incorrect)' conftest.out`" ; then
			ac_cv_have_dash_pthread=yes
	        case "$target_os" in
	        freebsd*)
# Freebsd doesn't use -pthread for compiles, it uses them for linking
                ;;
	        *)
			    CFLAGS="$CFLAGS -pthread"
			    CXXFLAGS="$CXXFLAGS -pthread"
                ;;
	        esac
		fi
	fi
	rm -f conftest*
    AC_MSG_RESULT($ac_cv_have_dash_pthread)

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

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

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

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

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

	    *-aix4.3*|*-aix5*)
			AC_DEFINE(_REENTRANT) 
			;;

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

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

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

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

dnl ========================================================
dnl Check for MacOS deployment target version
dnl ========================================================

MOZ_ARG_ENABLE_STRING(macos-target,
                      [  --enable-macos-target=VER (default=10.1)
                          Set the minimum MacOS version needed at runtime],
                      [MACOS_DEPLOYMENT_TARGET_STR=$enableval],
                      [MACOS_DEPLOYMENT_TARGET_STR=10.1])

case "$target" in
*-darwin*)
    dnl The C preprocessor can only handle integers in comparisons, so convert
    dnl the version to the form AABBCC where AA=major release, BB=minor release,
    dnl and CC=point/micro release.

    MACOS_VERSION_MAJOR=`echo $MACOS_DEPLOYMENT_TARGET_STR | cut -d . -f 1`
    MACOS_VERSION_MINOR=`echo $MACOS_DEPLOYMENT_TARGET_STR | cut -d . -f 2`
    MACOS_VERSION_MICRO=`echo $MACOS_DEPLOYMENT_TARGET_STR | cut -d . -f 3`
    if test -z "$MACOS_VERSION_MINOR"; then
        MACOS_VERSION_MINOR=0
    fi
    if test -z "$MACOS_VERSION_MICRO"; then
        MACOS_VERSION_MICRO=0
    fi

    MACOS_DEPLOYMENT_TARGET=`printf "%02d%02d%02d" "$MACOS_VERSION_MAJOR" "$MACOS_VERSION_MINOR" "$MACOS_VERSION_MICRO"`
    AC_DEFINE_UNQUOTED(MACOS_DEPLOYMENT_TARGET, $MACOS_DEPLOYMENT_TARGET)
    ;;
*)
    MACOS_DEPLOYMENT_TARGET=
    ;;
esac

AC_SUBST(MACOS_DEPLOYMENT_TARGET)

dnl ========================================================
dnl See if mmap sees writes
dnl For cross compiling, just define it as no, which is a safe default
dnl ========================================================
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 strerror lchown fchmod snprintf statvfs memmove rint)
AC_CHECK_FUNCS(nl_langinfo flockfile)

dnl localtime_r and strtok_r are only present on MacOS version 10.2 and higher
if test -z "$MACOS_DEPLOYMENT_TARGET" || test "$MACOS_DEPLOYMENT_TARGET" -ge "100200"; then
  AC_CHECK_FUNCS(localtime_r strtok_r)
fi

AC_CACHE_CHECK(
    [for res_ninit()],
    ac_cv_func_res_ninit,
    [AC_TRY_LINK([
        #ifdef linux
        #define _BSD_SOURCE 1
        #endif
        #include <resolv.h>
        ],
        [int foo = res_ninit(&_res);],
        [ac_cv_func_res_ninit=yes],
        [ac_cv_func_res_ninit=no])
    ])

if test "$ac_cv_func_res_ninit" = "yes"; then
    AC_DEFINE(HAVE_RES_NINIT)
dnl must add the link line we do something as foolish as this... dougt
dnl else
dnl    AC_CHECK_LIB(bind, res_ninit, AC_DEFINE(HAVE_RES_NINIT),
dnl        AC_CHECK_LIB(resolv, res_ninit, AC_DEFINE(HAVE_RES_NINIT)))
fi

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

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

case $target_os in
    os2*|msvc*|mksnt*|cygwin*|mingw*)
        ;;
    *)
    
AC_CHECK_LIB(iconv, iconv, [_ICONV_LIBS="$_ICONV_LIBS -liconv"],
    AC_CHECK_LIB(iconv, libiconv, [_ICONV_LIBS="$_ICONV_LIBS -liconv"]))
_SAVE_LIBS=$LIBS
LIBS="$LIBS $_ICONV_LIBS"
AC_CACHE_CHECK(
    [for iconv()],
    ac_cv_func_iconv,
    [AC_TRY_LINK([
        #include <stdlib.h>
        #include <iconv.h>
        ],
        [
            iconv_t h = iconv_open("", "");
            iconv(h, NULL, NULL, NULL, NULL);
            iconv_close(h);
        ],
        [ac_cv_func_iconv=yes],
        [ac_cv_func_iconv=no] 
        )]
    )
if test "$ac_cv_func_iconv" = "yes"; then
    AC_DEFINE(HAVE_ICONV)
    XPCOM_LIBS="$XPCOM_LIBS $_ICONV_LIBS"
    LIBICONV="$_ICONV_LIBS"
    AC_CACHE_CHECK(
        [for iconv() with const input],
        ac_cv_func_const_iconv,
        [AC_TRY_COMPILE([
            #include <iconv.h>
            ],
            [
                const char *input = "testing";
                iconv_t h = iconv_open("", "");
                iconv(h, &input, NULL, NULL, NULL);
                iconv_close(h);
            ],
            [ac_cv_func_const_iconv=yes],
            [ac_cv_func_const_iconv=no] 
            )]
        )
    if test "$ac_cv_func_const_iconv" = "yes"; then
        AC_DEFINE(HAVE_ICONV_WITH_CONST_INPUT)
    fi
fi
LIBS=$_SAVE_LIBS

    ;;
esac

AC_LANG_C

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

  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($ac_cv_cxx_exceptions_flags)
  _MOZ_EXCEPTIONS_FLAGS_OFF=$ac_cv_cxx_exceptions_flags
  _MOZ_EXCEPTIONS_FLAGS_ON=`echo $ac_cv_cxx_exceptions_flags | sed 's|no-||'`
fi

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

HAVE_GCC3_ABI=
if test "$GNU_CC"; then
  AC_CACHE_CHECK(for gcc 3.0 ABI,
      ac_cv_gcc_three_abi,
      [AC_TRY_COMPILE([],
                      [
#if defined(__GXX_ABI_VERSION) && __GXX_ABI_VERSION >= 100 /* G++ V3 ABI */
  return 0;
#else
#error Not gcc3.
#endif
                      ],
                      ac_cv_gcc_three_abi="yes",
                      ac_cv_gcc_three_abi="no")])
  if test "$ac_cv_gcc_three_abi" = "yes"; then
      HAVE_GCC3_ABI=1
  fi
fi
AC_SUBST(HAVE_GCC3_ABI)


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

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

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


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


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


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

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

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

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

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

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

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

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

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


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

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

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


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


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

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



dnl End of C++ language/feature checks
AC_LANG_C

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

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

fi # SKIP_COMPILER_CHECKS

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


dnl ========================================================
dnl =
dnl = Check for external package dependencies
dnl =
dnl ========================================================
MOZ_ARG_HEADER(External Packages)

dnl ========================================================
dnl = If NSPR was not detected in the system, 
dnl = use the one in the source tree (mozilla/nsprpub)
dnl ========================================================
MOZ_ARG_WITH_BOOL(system-nspr,
[  --with-system-nspr      Use system installed NSPR],
    _USE_SYSTEM_NSPR=1 )

if test -n "$_USE_SYSTEM_NSPR"; then
    AM_PATH_NSPR(4.0.0, [MOZ_NATIVE_NSPR=1], [MOZ_NATIVE_NSPR=])
fi

if test -z "$MOZ_NATIVE_NSPR"; then
    NSPR_CFLAGS='`$(DEPTH)/nsprpub/config/nspr-config --prefix=$(DIST) --cflags`'
    # explicitly set libs for Visual Age C++ for OS/2
    if test "$VACPP" = "yes"; then
        NSPR_LIBS='$(DIST)/lib/nspr'$NSPR_VERSION'.lib $(DIST)/lib/plc'$NSPR_VERSION'.lib $(DIST)/lib/plds'$NSPR_VERSION'.lib '$_PTHREAD_LDFLAGS''
    elif test "$_WIN32_MSVC"; then
            NSPR_LIBS='$(DIST)/lib/nspr'$NSPR_VERSION'.lib $(DIST)/lib/plc'$NSPR_VERSION'.lib $(DIST)/lib/plds'$NSPR_VERSION'.lib '
            NSPR_CFLAGS='-I$(DIST)/include/nspr'
    else
        NSPR_LIBS='`$(DEPTH)/nsprpub/config/nspr-config --prefix=$(DIST) --libs`'
    fi
fi

if test -z "$SKIP_LIBRARY_CHECKS"; then
dnl system JPEG support
dnl ========================================================
MOZ_ARG_WITH_STRING(system-jpeg,
[  --with-system-jpeg[=PFX]
                          Use system libjpeg [installed at prefix PFX]],
    JPEG_DIR=$withval)

_SAVE_CFLAGS=$CFLAGS
_SAVE_LDFLAGS=$LDFLAGS
_SAVE_LIBS=$LIBS
if test -n "${JPEG_DIR}"; then
    CFLAGS="-I${JPEG_DIR}/include $CFLAGS"
    LDFLAGS="-L${JPEG_DIR}/lib $LDFLAGS"
fi
if test -z "$JPEG_DIR" -o "$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 ========================================================
MOZ_ARG_WITH_STRING(system-zlib,
[  --with-system-zlib[=PFX]
                          Use system libz [installed at prefix PFX]],
    ZLIB_DIR=$withval)

_SAVE_CFLAGS=$CFLAGS
_SAVE_LDFLAGS=$LDFLAGS
if test -n "${ZLIB_DIR}"; then
    CFLAGS="-I${ZLIB_DIR}/include $CFLAGS"
    LDFLAGS="-L${ZLIB_DIR}/lib $LDFLAGS"
fi
if test -z "$ZLIB_DIR" -o "$ZLIB_DIR" = no; then
    SYSTEM_ZLIB=
else
    AC_MSG_CHECKING("for zlib.h")
    AC_TRY_COMPILE([#include "zlib.h"], [], 
	[result="yes" SYSTEM_ZLIB=1],
	[result="no" SYSTEM_ZLIB=])
    AC_MSG_RESULT("$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 ========================================================
MOZ_ARG_WITH_STRING(system-png, 
[  --with-system-png[=PFX]
                          Use system libpng [installed at prefix PFX]],
    PNG_DIR=$withval)

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

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

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

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

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

fi # SKIP_LIBRARY_CHECKS

dnl ========================================================
dnl = 
dnl = Toolkit Options
dnl = 
dnl ========================================================
MOZ_ARG_HEADER(Toolkit Options)

    dnl ========================================================
    dnl = Select the default toolkit
    dnl ========================================================
	MOZ_ARG_ENABLE_STRING(default-toolkit,
	[  --enable-default-toolkit=TK
                          Select default toolkit (default=<platform specific>)],
    [ _DEFAULT_TOOLKIT=$enableval ],
    [ _DEFAULT_TOOLKIT=$_PLATFORM_DEFAULT_TOOLKIT])

    if test "$_DEFAULT_TOOLKIT" = "gtk" \
        -o "$_DEFAULT_TOOLKIT" = "qt" \
        -o "$_DEFAULT_TOOLKIT" = "gtk2" \
        -o "$_DEFAULT_TOOLKIT" = "xlib" \
        -o "$_DEFAULT_TOOLKIT" = "os2" \
        -o "$_DEFAULT_TOOLKIT" = "beos" \
        -o "$_DEFAULT_TOOLKIT" = "photon" \
        -o "$_DEFAULT_TOOLKIT" = "mac" \
        -o "$_DEFAULT_TOOLKIT" = "windows" \
        -o "$_DEFAULT_TOOLKIT" = "cocoa"
    then
        dnl nglayout only supports building with one toolkit,
        dnl so ignore everything after the first comma (",").
        MOZ_WIDGET_TOOLKIT=`echo "$_DEFAULT_TOOLKIT" | sed -e "s/,.*$//"`
    else
        if test "$no_x" != "yes"; then
            AC_MSG_ERROR([Toolkit must be xlib, gtk, gtk2 or qt.])
        else
            AC_MSG_ERROR([Toolkit must be $_PLATFORM_DEFAULT_TOOLKIT.])
        fi
    fi

if test "$no_x" != "yes"; then
    dnl ========================================================
    dnl = Gtk support hackery                                  =
    dnl ========================================================
	MOZ_ARG_ENABLE_BOOL(toolkit-gtk,
	[  --enable-toolkit-gtk    Enable GTK+ toolkit support ],
        MOZ_ENABLE_GTK=1,
        MOZ_ENABLE_GTK= )


    dnl ========================================================
    dnl = Xlib support hackery                                 =
    dnl ========================================================
	MOZ_ARG_ENABLE_BOOL(toolkit-xlib,
	[  --enable-toolkit-xlib   Enable xlib toolkit support ],
        MOZ_ENABLE_XLIB=1,
        MOZ_ENABLE_XLIB= )

    dnl ========================================================
    dnl = Qt support hackery                                   =
    dnl ========================================================
	MOZ_ARG_ENABLE_BOOL(toolkit-qt,
	[  --enable-toolkit-qt     Enable Qt Toolkit support ],
        MOZ_ENABLE_QT=1, 
        MOZ_ENABLE_QT= )

fi # !no_x

AC_DEFINE_UNQUOTED(MOZ_DEFAULT_TOOLKIT,"$MOZ_WIDGET_TOOLKIT")

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

case "$MOZ_WIDGET_TOOLKIT" in
gtk)
	MOZ_ENABLE_GTK=1
    MOZ_ENABLE_XREMOTE=1
    TK_CFLAGS='$(MOZ_GTK_CFLAGS)'
    TK_LIBS='$(MOZ_GTK_LDFLAGS)'
	AC_DEFINE(MOZ_WIDGET_GTK)
    ;;

gtk2)
    MOZ_ENABLE_GTK2=1
    MOZ_ENABLE_XREMOTE=1
    TK_CFLAGS='$(MOZ_GTK2_CFLAGS)'
    TK_LIBS='$(MOZ_GTK2_LIBS)'
    AC_DEFINE(MOZ_WIDGET_GTK2)
    ;;

xlib)
	MOZ_ENABLE_XLIB=1
    MOZ_ENABLE_XREMOTE=1
	TK_CFLAGS='$(MOZ_XLIB_CFLAGS)'
	TK_LIBS='$(MOZ_XLIB_LDFLAGS)'
	AC_DEFINE(MOZ_WIDGET_XLIB)
    ;;

qt)
	MOZ_ENABLE_QT=1
    MOZ_ENABLE_XREMOTE=1
	TK_CFLAGS='$(MOZ_QT_CFLAGS)'
	TK_LIBS='$(MOZ_QT_LDFLAGS)'
	AC_DEFINE(MOZ_WIDGET_QT)
    ;;

photon)
	MOZ_ENABLE_PHOTON=1
	AC_DEFINE(MOZ_WIDGET_PHOTON)
    ;;
cocoa)
    MOZ_ENABLE_COCOA=1
    AC_DEFINE(MOZ_WIDGET_COCOA)
    ;;
esac

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

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

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

	MOZ_ARG_ENABLE_BOOL(gle,
	[  --enable-gle-support
                          GLE support (for debugging gtk widgets) ],
        MOZ_GLE=1
        MOZ_GLE_LDFLAGS=-lgle
        AC_DEFINE(MOZ_GLE),
        MOZ_GLE=
        MOZ_GLE_LDFLAGS= )

    MOZ_GTK_LDFLAGS=$GTK_LIBS

    if test "$MOZ_GLE"; then
        MOZ_GTK_LDFLAGS=`echo $MOZ_GTK_LDFLAGS | sed -e 's/-lgtk/-lgle -lgtk/'`
    fi

    MOZ_GTK_CFLAGS=$GTK_CFLAGS

fi

if test "$MOZ_ENABLE_GTK2"
then
    PKG_CHECK_MODULES(MOZ_GTK2, gtk+-2.0 >= 1.3.7)
fi

if test "$MOZ_ENABLE_XLIB"
then
    MOZ_XLIB_CFLAGS="$X_CFLAGS"
    MOZ_XLIB_LDFLAGS="$XLDFLAGS"
    MOZ_XLIB_LDFLAGS="$MOZ_XLIB_LDFLAGS $XEXT_LIBS $X11_LIBS"
fi

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

    if test -z "$QTDIR"; then
      QTDIR="/usr"
    fi
    QTINCDIR="/include/qt"
    if test ! -d "$QTDIR$QTINCDIR"; then
       QTINCDIR="/include/X11/qt"
    fi
    if test ! -d "$QTDIR$QTINCDIR"; then
       QTINCDIR="/include"
    fi

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

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

    MOZ_QT_LDFLAGS=$QT_LIBS
    MOZ_QT_CFLAGS=$QT_CFLAGS

    AC_LANG_CPLUSPLUS

    _SAVE_CXXFLAGS=$CXXFLAGS
    _SAVE_LIBS=$LIBS

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

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

    AC_LANG_C
fi

AC_SUBST(MOZ_DEFAULT_TOOLKIT)

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

AC_SUBST(MOZ_ENABLE_GTK)
AC_SUBST(MOZ_ENABLE_XLIB)
AC_SUBST(MOZ_ENABLE_GTK2)
AC_SUBST(MOZ_ENABLE_QT)
AC_SUBST(MOZ_ENABLE_PHOTON)
AC_SUBST(MOZ_ENABLE_COCOA)
AC_SUBST(MOZ_ENABLE_XREMOTE)
AC_SUBST(MOZ_GTK_CFLAGS)
AC_SUBST(MOZ_GTK_LDFLAGS)
AC_SUBST(MOZ_GTK2_CFLAGS)
AC_SUBST(MOZ_GTK2_LIBS)
AC_SUBST(MOZ_XLIB_CFLAGS)
AC_SUBST(MOZ_XLIB_LDFLAGS)
AC_SUBST(MOZ_QT_CFLAGS)
AC_SUBST(MOZ_QT_LDFLAGS)

AC_SUBST(MOC)

if test "$MOZ_ENABLE_GTK" || test "$MOZ_ENABLE_QT" \
|| test "$MOZ_ENABLE_XLIB" \
|| test "$MOZ_ENABLE_GTK2"
then
    AC_DEFINE(MOZ_X11)
fi

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

dnl =========================================================
dnl = Calendar client
dnl =========================================================
MOZ_CALENDAR=
MOZ_ARG_ENABLE_BOOL(calendar,
[  --enable-calendar       Enable building of the calendar client],
    MOZ_CALENDAR=1 )
AC_SUBST(MOZ_CALENDAR)

dnl =========================================================
dnl = Mail & News
dnl =========================================================
MOZ_MAIL_NEWS=1
MOZ_ARG_DISABLE_BOOL(mailnews,
[  --disable-mailnews      Disable building of mail & news components],
    MOZ_MAIL_NEWS= )
AC_SUBST(MOZ_MAIL_NEWS)

dnl =========================================================
dnl = LDAP
dnl =========================================================
MOZ_LDAP_XPCOM=1
MOZ_ARG_DISABLE_BOOL(ldap,
[  --disable-ldap          Disable LDAP support],
    MOZ_LDAP_XPCOM=)

dnl =========================================================
dnl = Calendar
dnl =========================================================
if test "$MOZ_CALENDAR"; then
    AC_CHECK_LIB(ical, icalproperty_new_location, [_dummy=foo],
        AC_MSG_ERROR([Calendar requires libical]))
fi

AC_SUBST(MOZ_CALENDAR)

dnl ========================================================
dnl = Phoenix
dnl ========================================================
if test "$MOZ_PHOENIX"; then
   AC_DEFINE(MOZ_PHOENIX)
fi

AC_SUBST(MOZ_PHOENIX)

dnl ========================================================
dnl = FreeType2
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(freetype2,
[  --disable-freetype2     Disable FreeType2 support ],
    _NO_FREETYPE2=1 )

if test "$no_x" = "yes"; then
    _NO_FREETYPE2=1
fi

if test -z "$_NO_FREETYPE2"; then
    AC_CHECK_FT2(6.1.0, [MOZ_ENABLE_FREETYPE2=1], [MOZ_ENABLE_FREETYPE2=])
fi

AC_SUBST(MOZ_ENABLE_FREETYPE2)

dnl ========================================================
dnl = Xft
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(xft,
[  --enable-xft            Enable Xft support ],
    MOZ_ENABLE_XFT=1
    AC_DEFINE(MOZ_ENABLE_XFT)
)

if test "$MOZ_ENABLE_XFT"
then
    PKG_CHECK_MODULES(MOZ_XFT, xft)
    if test "$MOZ_ENABLE_GTK2"; then
        PKG_CHECK_MODULES(_PANGOCHK, pango >= 1.1.0)
    fi
fi

AC_SUBST(MOZ_ENABLE_XFT)
AC_SUBST(MOZ_XFT_CFLAGS)
AC_SUBST(MOZ_XFT_LIBS)

dnl ========================================================
dnl = disabling x11 core support, enabled by default
dnl ========================================================
MOZ_ENABLE_COREXFONTS=${MOZ_ENABLE_COREXFONTS:-1}
if test "$MOZ_ENABLE_COREXFONTS"
then
    AC_DEFINE(MOZ_ENABLE_COREXFONTS)
fi

AC_SUBST(MOZ_ENABLE_COREXFONTS)

dnl ========================================================
dnl = PostScript print module
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(postscript,
[  --disable-postscript    Disable PostScript printing support ],
    MOZ_ENABLE_POSTSCRIPT=,
    MOZ_ENABLE_POSTSCRIPT=1 )

dnl ========================================================
dnl = Xprint print module
dnl ========================================================
if test "$no_x" != "yes"
then
    MOZ_ENABLE_XPRINT=1

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

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

    MOZ_ARG_DISABLE_BOOL(xprint,
    [  --disable-xprint        Disable Xprint printing support ],
        MOZ_ENABLE_XPRINT=,
        MOZ_ENABLE_XPRINT=1 )
fi

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

dnl ========================================================
dnl = JS Debugger XPCOM component (js/jsd)
dnl ========================================================
MOZ_JSDEBUGGER=1
MOZ_ARG_DISABLE_BOOL(jsd,
[  --disable-jsd           Disable JavaScript debug library],
    MOZ_JSDEBUGGER=)


dnl ========================================================
dnl = This turns on xinerama support.  We just can't use the
dnl = autodetection of the libraries since on Red Hat 7 linking with
dnl = Xinerama crashes the dynamic loader.  Make people turn it on
dnl = explicitly.  The autodetection is done above in the Xlib
dnl = detection routines.
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(xinerama,
[  --enable-xinerama       Enable Xinerama support
                           ( not safe for Red Hat 7.0 ) ],
[ if test -n "$MOZ_XINERAMA_LIBS" && \
      test -n "$ac_cv_header_X11_extensions_Xinerama_h"; then
    MOZ_ENABLE_XINERAMA=1
    AC_DEFINE(MOZ_ENABLE_XINERAMA)
fi ])

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

dnl ========================================================
dnl complex text support off by default
dnl ========================================================
SUNCTL=
MOZ_ARG_ENABLE_BOOL(ctl,
[  --enable-ctl            Enable Thai Complex Script support],
    SUNCTL=1,
    SUNCTL= )

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

dnl ========================================================
dnl Libeditor can be build as plaintext-only,
dnl or as a full html and text editing component.
dnl We build both by default.
dnl ========================================================
MOZ_PLAINTEXT_EDITOR_ONLY=
MOZ_ARG_ENABLE_BOOL(plaintext-editor-only,
[  --enable-plaintext-editor-only
                          Allow only plaintext editing],
  MOZ_PLAINTEXT_EDITOR_ONLY=1 )
dnl Note the #define is MOZILLA, not MOZ, for compat with the Mac build.
AC_SUBST(MOZ_PLAINTEXT_EDITOR_ONLY)

dnl ========================================================
dnl Composer is on by default.
dnl ========================================================
MOZ_COMPOSER=1
MOZ_ARG_DISABLE_BOOL(composer,
[  --disable-composer      Disable building of Composer],
    MOZ_COMPOSER= )
AC_SUBST(MOZ_COMPOSER)

dnl ========================================================
dnl = Enable compilation of specific extension modules
dnl ========================================================

MOZ_EXTENSIONS_DEFAULT=" cookie wallet content-packs xml-rpc xmlextras help pref transformiix venkman inspector irc universalchardet typeaheadfind"

MOZ_EXTENSIONS_ALL="$MOZ_EXTENSIONS_DEFAULT xmlterm access-builtin p3p interfaceinfo datetime finger cview" 

MOZ_ARG_ENABLE_STRING(extensions,
[  --enable-extensions     Enable extensions],
[ for option in `echo $enableval | sed 's/,/ /g'`; do
    if test "$option" = "yes" || test "$option" = "all"; then
        MOZ_EXTENSIONS="$MOZ_EXTENSIONS $MOZ_EXTENSIONS_ALL"
    elif test "$option" = "no" || test "$option" = "none"; then
        MOZ_EXTENSIONS=""
    elif test "$option" = "default"; then
        MOZ_EXTENSIONS="$MOZ_EXTENSIONS $MOZ_EXTENSIONS_DEFAULT"
    elif test `echo "$option" | grep -c \^-` != 0; then
        option=`echo $option | sed 's/^-//'`
        MOZ_EXTENSIONS=`echo "$MOZ_EXTENSIONS" | sed "s/ ${option}//"`
    else
        MOZ_EXTENSIONS="$MOZ_EXTENSIONS $option"
    fi
done],
    MOZ_EXTENSIONS="$MOZ_EXTENSIONS_DEFAULT")

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

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

dnl Remove dupes
if test -n "${_CYGWIN_PERL}"; then
MOZ_EXTENSIONS=`${PERL} ${srcdir}/build/unix/uniq.pl ${MOZ_EXTENSIONS}`
else
MOZ_EXTENSIONS=`${CYGWIN_WRAPPER} ${PERL} ${srcdir}/build/unix/uniq.pl ${MOZ_EXTENSIONS}`
fi

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

dnl ========================================================
dnl MathML on by default
dnl ========================================================
MOZ_MATHML=1
MOZ_ARG_DISABLE_BOOL(mathml,
[  --disable-mathml        Disable MathML],
    MOZ_MATHML= )
if test "$MOZ_MATHML"; then
  AC_DEFINE(MOZ_MATHML)
fi

dnl ========================================================
dnl SVG
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(svg,
[  --enable-svg            Enable SVG ],
    MOZ_SVG=1
    AC_DEFINE(MOZ_SVG))

dnl To build transformiix standalone, set TX_EXE while configuring
if test "$TX_EXE"; then
  AC_DEFINE(TX_EXE)
  dnl need to know about endianess for standalone
  AC_C_BIGENDIAN
  if test $ac_cv_c_bigendian = yes; then
    AC_DEFINE(IS_BIG_ENDIAN)
  fi
fi

dnl ========================================================
dnl Installer
dnl ========================================================
case "$target_os" in
    solaris*|linux*|msvc*|mksnt*|cygwin*|mingw*|os2*)
        MOZ_INSTALLER=1
        ;;
esac

MOZ_ARG_DISABLE_BOOL(installer,
[  --disable-installer     Disable building of installer],
    MOZ_INSTALLER=,
    MOZ_INSTALLER=1 )
AC_SUBST(MOZ_INSTALLER)

dnl ========================================================
dnl ActiveX
dnl ========================================================
MOZ_NO_ACTIVEX_SUPPORT=1

case "$target_os" in
    msvc*|mksnt*|cygwin*|mingw*)
        MOZ_NO_ACTIVEX_SUPPORT=
        ;;
esac

MOZ_ARG_DISABLE_BOOL(activex,
[  --disable-activex       Disable building of ActiveX control (win32 only)],
    MOZ_NO_ACTIVEX_SUPPORT=1,
    MOZ_NO_ACTIVEX_SUPPORT= )
AC_SUBST(MOZ_NO_ACTIVEX_SUPPORT)

MOZ_ACTIVEX_SCRIPTING_SUPPORT=
MOZ_ARG_ENABLE_BOOL(activex-scripting,
[  --enable-activex-scripting
                          Enable building of ActiveX scripting and plugin support (win32 only)],
    MOZ_ACTIVEX_SCRIPTING_SUPPORT=1,
    MOZ_ACTIVEX_SCRIPTING_SUPPORT=)
AC_SUBST(MOZ_ACTIVEX_SCRIPTING_SUPPORT)


if test -n "$MOZ_NO_ACTIVEX_SUPPORT" -a -n "$MOZ_ACTIVEX_SCRIPTING_SUPPORT";
then
    AC_MSG_ERROR([Cannot enable ActiveX scripting support when ActiveX support is disabled.])
fi


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

dnl ========================================================
dnl =
dnl = Module specific options
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Individual module options)

dnl ========================================================
dnl = Enable Lea malloc in xpcom. OFF by default.
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(xpcom-lea,
[  --enable-xpcom-lea      Enable Lea malloc in xpcom ],
[   XPCOM_USE_LEA=1
    AC_DEFINE(XPCOM_USE_LEA)])

dnl ========================================================
dnl = Enable Ultrasparc specific optimizations for JS
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(js-ultrasparc,
[  --enable-js-ultrasparc  Enable UltraSPARC optimizations in JS],
[case "$target_os" in
    solaris*)   
        case $OS_TEST in
        sun4u)
            JS_ULTRASPARC_OPTS=1
            ;;
        esac
        ;;
esac
])
AC_SUBST(JS_ULTRASPARC_OPTS)

dnl ========================================================
dnl =
dnl = Feature options that require extra sources to be pulled
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Features that require extra sources)

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

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

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

dnl ========================================================
dnl =
dnl = Debugging Options
dnl = 
dnl ========================================================
MOZ_ARG_HEADER(Debugging and Optimizations)

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

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

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

MOZ_DEBUG_ENABLE_DEFS="-DDEBUG -D_DEBUG"
 case "${target_os}" in
    beos*)
        MOZ_DEBUG_ENABLE_DEFS="$MOZ_DEBUG_ENABLE_DEFS -DDEBUG_${USER}"
        ;;
    msvc*|mksnt*|cygwin*|mingw*)
        MOZ_DEBUG_ENABLE_DEFS="$MOZ_DEBUG_ENABLE_DEFS -DDEBUG_`echo ${USERNAME} | sed -e 's| |_|g'`"
        ;;
    *) 
        MOZ_DEBUG_ENABLE_DEFS="$MOZ_DEBUG_ENABLE_DEFS -DDEBUG_`$WHOAMI`"
        ;;
  esac
MOZ_DEBUG_ENABLE_DEFS="$MOZ_DEBUG_ENABLE_DEFS -DTRACING"

MOZ_DEBUG_DISABLE_DEFS="-DNDEBUG -DTRIMMED"

dnl ========================================================
dnl = Enable code optimization. OFF by default.
dnl ========================================================
MOZ_OPTIMIZE=
if test ! "$MOZ_OPTIMIZE_FLAGS"; then
	MOZ_OPTIMIZE_FLAGS="-O"
fi

MOZ_ARG_ENABLE_STRING(optimize,
[  --enable-optimize[=OPT] Enable compiler optimizations (default=-O) ],
[ if test "$enableval" != "no"; then
    MOZ_OPTIMIZE=1
    if test -n "$enableval" && test "$enableval" != "yes"; then
        MOZ_OPTIMIZE_FLAGS=`echo $enableval | sed -e 's|\\\ | |g'`
        MOZ_OPTIMIZE=2
    fi
fi ])

AC_SUBST(MOZ_OPTIMIZE)
AC_SUBST(MOZ_OPTIMIZE_FLAGS)
AC_SUBST(MOZ_OPTIMIZE_LDFLAGS)

dnl ========================================================
dnl = Enable/disable debug for specific modules only
dnl =   module names beginning with ^ will be disabled 
dnl ========================================================
MOZ_ARG_ENABLE_STRING(debug-modules,
[  --enable-debug-modules  Enable/disable debug info for specific modules],
[ MOZ_DEBUG_MODULES=`echo $enableval| sed 's/,/ /g'` ] )

dnl ========================================================
dnl = Enable/disable generation of debugger info for specific modules only
dnl =    the special module name ALL_MODULES can be used to denote all modules
dnl =    module names beginning with ^ will be disabled
dnl ========================================================
MOZ_DBGRINFO_MODULES=
MOZ_ARG_ENABLE_STRING(debugger-info-modules,
[  --enable-debugger-info-modules
                          Enable/disable debugger info for specific modules],
[ for i in `echo $enableval | sed 's/,/ /g'`; do
      dnl note that the list of module names is reversed as it is copied
      dnl this is important, as it will allow config.mk to interpret stuff like
      dnl "^ALL_MODULES xpcom" properly
      if test "$i" = "no"; then
        i="^ALL_MODULES"
      fi
      if test "$i" = "yes"; then
        i="ALL_MODULES"
      fi
      MOZ_DBGRINFO_MODULES="$i $MOZ_DBGRINFO_MODULES";
    done ])

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

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

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

dnl ========================================================
dnl Crash on assert
dnl ========================================================
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 = Enable function reordering. Off by default
dnl ========================================================
MOZ_REORDER=
MOZ_ARG_ENABLE_BOOL(reorder,
[  --enable-reorder        Enable function reordering (requires GNU ld) ],
[ if test -z "$GNU_LD"; then
    AC_MSG_WARN([Reordering only works with GNU ld. Not reordering.])
else
    MOZ_REORDER=1
fi])

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

dnl ========================================================
dnl = detect webshell leaks
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(detect-webshell-leaks,
[  --enable-detect-webshell-leaks
                          Enable detection of webshell leaks 
                          (default=debug)],
    _DETECT_WEBSHELL_LEAKS=1 , ,
    [ if test "$MOZ_DEBUG"; then
        _DETECT_WEBSHELL_LEAKS=1 
    fi])

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

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

dnl ========================================================
dnl = Location of malloc wrapper lib
dnl ========================================================
MOZ_ARG_WITH_STRING(wrap-malloc,
[  --with-wrap-malloc=DIR  Location of malloc wrapper library],
    WRAP_MALLOC_LIB=$withval)

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

dnl ========================================================
dnl = Enable stripping of libs & executables
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(strip,
[  --enable-strip          Enable stripping of libs & executables ],
    ENABLE_STRIP=1)

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

dnl ========================================================
dnl = --enable-old-abi-compat-wrappers
dnl ========================================================
dnl on x86 linux, the current builds of some popular plugins (notably
dnl flashplayer and real) expect a few builtin symbols from libgcc
dnl which were available in some older versions of gcc.  However,
dnl they're _NOT_ available in newer versions of gcc (eg 3.1), so if
dnl we want those plugin to work with a gcc-3.1 built binary, we need
dnl to provide these symbols.  MOZ_ENABLE_OLD_ABI_COMPAT_WRAPPERS defaults
dnl to true on x86 linux, and false everywhere else.
dnl

MOZ_ARG_ENABLE_BOOL(old-abi-compat-wrappers,
[  --enable-old-abi-compat-wrappers  Support old GCC ABI symbols to ease the pain of the linux compiler change],
    MOZ_ENABLE_OLD_ABI_COMPAT_WRAPPERS=1,
    MOZ_ENABLE_OLD_ABI_COMPAT_WRAPPERS= )
if test "$MOZ_ENABLE_OLD_ABI_COMPAT_WRAPPERS"; then
    AC_LANG_SAVE
    AC_LANG_CPLUSPLUS
    AC_CHECK_FUNCS(__builtin_vec_new __builtin_vec_delete __builtin_new __builtin_delete __pure_virtual)
    AC_LANG_RESTORE
    AC_DEFINE(MOZ_ENABLE_OLD_ABI_COMPAT_WRAPPERS)
fi

dnl ========================================================
dnl = --enable-prebinding
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(prebinding,
[  --enable-prebinding     Enable prebinding (Mac OS X only)],
    USE_PREBINDING=1,
    USE_PREBINDING= )

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

dnl ========================================================
dnl = Enable timeline service, which provides lightweight
dnl = instrumentation of mozilla for performance measurement.
dnl = Timeline is off by default.
dnl ========================================================
MOZ_TIMELINE=
MOZ_ARG_ENABLE_BOOL(timeline,
[  --enable-timeline       Enable timeline services ],
    AC_DEFINE(MOZ_TIMELINE)
    MOZ_TIMELINE=1)

dnl ========================================================
dnl Turn on reflow counting
dnl ========================================================
MOZ_REFLOW_PERF=
MOZ_ARG_ENABLE_BOOL(reflow-perf,
[  --enable-reflow-perf    Enable reflow performance tracing],
    MOZ_REFLOW_PERF=1
    AC_DEFINE(MOZ_REFLOW_PREF) )
AC_SUBST(MOZ_REFLOW_PERF)

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

dnl ========================================================
dnl Enable code size metrics.
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(codesighs,
[  --enable-codesighs      Enable code size analysis tools],
[ if test -d ./tools/codesighs; then 
    MOZ_MAPINFO=1
else
    AC_MSG_ERROR([Codesighs directory ./tools/codesighs required.])
fi])

dnl ========================================================
dnl = Enable trace malloc
dnl ========================================================
NS_TRACE_MALLOC=${MOZ_TRACE_MALLOC}
MOZ_ARG_ENABLE_BOOL(trace-malloc,
[  --enable-trace-malloc   Enable malloc tracing],
    NS_TRACE_MALLOC=1 )
if test "$NS_TRACE_MALLOC"; then
  # Please, Mr. Linker Man, don't take away our symbol names
  MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS=
  USE_ELF_DYNSTR_GC=
  AC_DEFINE(NS_TRACE_MALLOC)
fi
AC_SUBST(NS_TRACE_MALLOC)

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

MOZ_ARG_ENABLE_STRING(profile-modules,
[  --enable-profile-modules
                          Enable/disable profiling for specific modules],
[ MOZ_PROFILE_MODULES=`echo $enableval| sed 's/,/ /g'` ] )

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

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

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

dnl ========================================================
dnl = Support for demangling undefined symbols
dnl ========================================================
if test -z "$SKIP_LIBRARY_CHECKS"; then
AC_CHECK_LIB(iberty, cplus_demangle, [HAVE_DEMANGLE=1],
             HAVE_DEMANGLE=, "-liberty")
fi

MOZ_DEMANGLE_SYMBOLS=

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

AC_SUBST(MOZ_DEMANGLE_SYMBOLS)


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

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

dnl =========================================================
dnl = Chrome format
dnl =========================================================
MOZ_ARG_ENABLE_STRING(chrome-format,
[  --enable-chrome-format=FORMAT
                          Select FORMAT of chrome files (default=jar)],
    MOZ_CHROME_FILE_FORMAT=`echo $enableval | tr A-Z a-z`)

if test -z "$MOZ_CHROME_FILE_FORMAT"; then
    MOZ_CHROME_FILE_FORMAT=jar
fi

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

dnl ========================================================
dnl = Define default location for MOZILLA_FIVE_HOME
dnl ========================================================
MOZ_ARG_WITH_STRING(default-mozilla-five-home,
[  --enable-default-mozilla-five-home
                          Set the default value for MOZILLA_FIVE_HOME],
[ val=`echo $withval`
  AC_DEFINE_UNQUOTED(MOZ_DEFAULT_MOZILLA_FIVE_HOME,"$val") ])

dnl ========================================================
dnl = Location of the mozilla user directory (default is ~/.mozilla).],
dnl ========================================================
MOZ_ARG_WITH_STRING(user-appdir,
[  --with-user-appdir=DIR  Set user-specific appdir (default=.mozilla)],
[ val=`echo $withval`
if echo "$val" | grep "\/" >/dev/null; then
    AC_MSG_ERROR("Homedir must be single relative path.")
else 
    AC_DEFINE_UNQUOTED(MOZ_USER_DIR,"$val")
fi], 
    AC_DEFINE(MOZ_USER_DIR,".mozilla") )

dnl ========================================================
dnl = Doxygen configuration
dnl ========================================================
dnl Use commas to specify multiple dirs to this arg
MOZ_DOC_INPUT_DIRS='./dist/include ./dist/idl'
MOZ_ARG_WITH_STRING(doc-input-dirs,
[  --with-doc-input-dirs=DIRS
                          Header/idl dirs to create docs from],
[ MOZ_DOC_INPUT_DIRS=`echo "$withval" | sed "s/,/ /g"` ] )
AC_SUBST(MOZ_DOC_INPUT_DIRS)

dnl Use commas to specify multiple dirs to this arg
MOZ_DOC_INCLUDE_DIRS='./dist/include ./dist/include/nspr'
MOZ_ARG_WITH_STRING(doc-include-dirs,
[  --with-doc-include-dirs=DIRS  
                          Include dirs to preprocess doc headers],
[ MOZ_DOC_INCLUDE_DIRS=`echo "$withval" | sed "s/,/ /g"` ] )
AC_SUBST(MOZ_DOC_INCLUDE_DIRS)

MOZ_DOC_OUTPUT_DIR='./dist/docs'
MOZ_ARG_WITH_STRING(doc-output-dir,
[  --with-doc-output-dir=DIR
                          Dir to generate docs into],
[ MOZ_DOC_OUTPUT_DIR=$withval ] )
AC_SUBST(MOZ_DOC_OUTPUT_DIR)

if test -z "$SKIP_COMPILER_CHECKS"; then
dnl ========================================================
dnl =
dnl = Compiler Options
dnl = 
dnl ========================================================
MOZ_ARG_HEADER(Compiler Options)

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

AC_LANG_CPLUSPLUS

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

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

dnl ========================================================
dnl Autoconf test for gcc 2.7.2.x (and maybe others?) so that we don't
dnl provide non-const forms of the operator== for comparing nsCOMPtrs to
dnl raw pointers in nsCOMPtr.h.  (VC++ has the same bug.)
dnl ========================================================
_SAVE_CXXFLAGS=$CXXFLAGS
CXXFLAGS="$CXXFLAGS ${_WARNINGS_CXXFLAGS}"
AC_CACHE_CHECK(for correct overload resolution with const and templates,
    ac_nscap_nonconst_opeq_bug,
    [AC_TRY_COMPILE([
                      template <class T>
                      class Pointer
                        {
                        public:
                          T* myPtr;
                        };
                      
                      template <class T, class U>
                      int operator==(const Pointer<T>& rhs, U* lhs)
                        {
                          return rhs.myPtr == lhs;
                        }
                      
                      template <class T, class U>
                      int operator==(const Pointer<T>& rhs, const U* lhs)
                        {
                          return rhs.myPtr == lhs;
                        }
                    ],
                    [
                      Pointer<int> foo;
                      const int* bar;
                      return foo == bar;
                    ],
                    ac_nscap_nonconst_opeq_bug="no",
                    ac_nscap_nonconst_opeq_bug="yes")])
CXXFLAGS="$_SAVE_CXXFLAGS"

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

dnl pass -Wno-long-long to the compiler
MOZ_ARG_ENABLE_BOOL(long-long-warning,
[  --enable-long-long-warning 
                          Warn about use of non-ANSI long long type],
    _IGNORE_LONG_LONG_WARNINGS=,
    _IGNORE_LONG_LONG_WARNINGS=1)

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

dnl ========================================================
dnl C++ rtti
dnl Should be smarter and check that the compiler does indeed have rtti
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(cpp-rtti,
[  --enable-cpp-rtti       Enable C++ RTTI ],
[ _MOZ_USE_RTTI=1 ],
[ _MOZ_USE_RTTI= ])

if test "$_MOZ_USE_RTTI"; then
   _MOZ_RTTI_FLAGS=$_MOZ_RTTI_FLAGS_ON
else
   _MOZ_RTTI_FLAGS=$_MOZ_RTTI_FLAGS_OFF
fi

dnl ========================================================
dnl C++ exceptions (g++/egcs only - for now)
dnl Should be smarter and check that the compiler does indeed have exceptions
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(cpp-exceptions,
[  --enable-cpp-exceptions Enable C++ exceptions ],
[ _MOZ_CPP_EXCEPTIONS=1 ],
[ _MOZ_CPP_EXCEPTIONS= ])

if test "$_MOZ_CPP_EXCEPTIONS"; then
    _MOZ_EXCEPTIONS_FLAGS=$_MOZ_EXCEPTIONS_FLAGS_ON
else
    _MOZ_EXCEPTIONS_FLAGS=$_MOZ_EXCEPTIONS_FLAGS_OFF
fi

# Irix & OSF native compilers do not like exception declarations 
# when exceptions are disabled
if test "$_MOZ_CPP_EXCEPTIONS" -o -n "$MIPSPRO_CXX" -o -n "$COMPAQ_CXX" -o -n "$VACPP"; then
    AC_DEFINE(CPP_THROW_NEW, [])
else
    AC_DEFINE(CPP_THROW_NEW, [throw()])
fi
AC_LANG_C

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

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

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

dnl ========================================================
dnl =
dnl = Build depencency options
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Build dependencies)

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

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


dnl ========================================================
dnl =
dnl = Static Build Options
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Static build options)

BUILD_SHARED_LIBS=1
BUILD_STATIC_LIBS=
MOZ_STATIC_COMPONENT_LIBS=

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

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

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

dnl ========================================================
dnl Generate static component from list of modules
dnl ========================================================
MOZ_ARG_ENABLE_STRING(meta-component-modules,
[  --enable-meta-component-modules=mod1[,mod2]
                          Build single meta-component from specified modules],
[ MOZ_STATIC_COMPONENTS=`echo $enableval | sed 's/,/ /g'` ] )

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

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

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

	dnl ========================================================
	dnl Figure out if we are using a pre-5.0x version of the
	dnl xlC compiler and if so, set flag
	dnl ========================================================

	if test ! "$GNU_CC" && test "$ac_cv_cpp_reinterpret_cast" = no ; then
	   CXXFLAGS="$CXXFLAGS -DAIX_XLC_364"
	   CFLAGS="$CFLAGS -DAIX_XLC_364"
	fi

	;;

esac

dnl ========================================================
dnl =
dnl = Standalone module options
dnl = 
dnl ========================================================
MOZ_ARG_HEADER(Standalone module options (Not for building Mozilla))

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

dnl Disable ldap if LDAP is not building all of Mozilla
dnl and ldap isn't in the standalone list
if test "$BUILD_MODULES" != "all" &&
    test `echo "$BUILD_MODULES" | grep -c ldap` = 0 &&
    test "$enable_ldap" != "yes"; then
    MOZ_LDAP_XPCOM=
fi

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

if test "$_WIN32_MSVC"; then
    SKIP_IDL_CHECK="yes"
fi

dnl = Allow users to disable libIDL checking for standalone modules
MOZ_ARG_WITHOUT_BOOL(libIDL,
[  --without-libIDL        Skip check for libIDL (standalone modules only)],
	SKIP_IDL_CHECK="yes")

if test "$SKIP_IDL_CHECK" = "no"
then
    if test "$MOZ_ENABLE_GTK2"; then
        PKG_CHECK_MODULES(LIBIDL, libIDL-2.0 >= 0.8.0,,_LIBIDL_NOT_FOUND=1)
    else
        AM_PATH_LIBIDL($LIBIDL_VERSION,,_LIBIDL_NOT_FOUND=1)
    fi
    dnl
    dnl If we don't have a libIDL config program & not cross-compiling, 
    dnl     look for orbit-config instead.
    dnl
    if test -n "$_LIBIDL_NOT_FOUND" && test -z "$CROSS_COMPILE"; then
        AC_PATH_PROGS(ORBIT_CONFIG, $ORBIT_CONFIG orbit-config)
        if test -n "$ORBIT_CONFIG"; then
        	_ORBIT_CFLAGS=`${ORBIT_CONFIG} client --cflags`
    	    _ORBIT_LIBS=`${ORBIT_CONFIG} client --libs`
            _ORBIT_INC_PATH=`${PERL} -e '{ for $f (@ARGV) { print "$f " if ($f =~ m/^-I/); } }' -- ${_ORBIT_CFLAGS}`
            _ORBIT_LIB_PATH=`${PERL} -e '{ for $f (@ARGV) { print "$f " if ($f =~ m/^-L/); } }' -- ${_ORBIT_LIBS}`
            LIBIDL_CFLAGS="$_ORBIT_INC_PATH"
            LIBIDL_LIBS="$_ORBIT_LIB_PATH -lIDL -lglib"
            LIBIDL_CONFIG=
            _LIBIDL_NOT_FOUND=
        fi
    fi
    if test -n "$_LIBIDL_NOT_FOUND"; then
        AC_MSG_ERROR([libIDL not found.
        libIDL $LIBIDL_VERSION or higher is required.])
    fi
fi

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

if test -z "$SKIP_PATH_CHECKS" && test -z "$MOZ_ENABLE_GTK2"; then
if test -z "${GLIB_CFLAGS}" || test -z "${GLIB_LIBS}" ; then
    AM_PATH_GLIB(${GLIB_VERSION})
fi
fi

if test -z "${GLIB_GMODULE_LIBS}" -a -n "${GLIB_CONFIG}"; then
    GLIB_GMODULE_LIBS=`$GLIB_CONFIG gmodule --libs`
fi

AC_SUBST(LIBIDL_CFLAGS)
AC_SUBST(LIBIDL_LIBS)
AC_SUBST(GLIB_CFLAGS)
AC_SUBST(GLIB_LIBS)
AC_SUBST(GLIB_GMODULE_LIBS)
AC_SUBST(HOST_LIBIDL_CONFIG)
AC_SUBST(HOST_LIBIDL_CFLAGS)
AC_SUBST(HOST_LIBIDL_LIBS)

dnl ========================================================
dnl Check for libart
dnl ========================================================
MOZ_LIBART_CFLAGS=
MOZ_LIBART_LIBS=

if test "$MOZ_SVG"; then
  if test "$MOZ_INTERNAL_LIBART_LGPL"; then
    dnl libart's configure hasn't been run yet, but we know what the
    dnl answer should be anyway
    MOZ_LIBART_CFLAGS='-I${DIST}/include/libart_lgpl'
    case "$target_os" in
    msvc*|mksnt*|cygwin*|mingw*)
        MOZ_LIBART_LIBS='$(DIST)/lib/$(LIB_PREFIX)moz_art_lgpl.$(LIB_SUFFIX)' 
        ;;
    beos*)
        MOZ_LIBART_LIBS='-lmoz_art_lgpl -lroot -lbe'
        ;;
    *)
        MOZ_LIBART_LIBS='-lmoz_art_lgpl -lm'
        ;;
    esac
  else
dnl Disable system libart until the pixel format changes are merged upstream
    AC_MSG_ERROR([SVG requires a modified version of libart. To pull and build
this LGPL library, set MOZ_INTERNAL_LIBART_LGPL, and then rerun the
checkout stage])
dnl    AM_PATH_LIBART($LIBART_VERSION,
dnl      AC_MSG_ERROR(SVG requires at least version $LIBART_VERSION of libart))
dnl
dnl    MOZ_LIBART_CFLAGS=$LIBART_CFLAGS
dnl    MOZ_LIBART_LIBS=$LIBART_LIBS
  fi
fi

AC_SUBST(MOZ_LIBART_CFLAGS)
AC_SUBST(MOZ_LIBART_LIBS)
AC_SUBST(MOZ_INTERNAL_LIBART_LGPL)

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

dnl ========================================================
dnl =
dnl = Cleanup section for misc ordering snafus
dnl =
if test "$_WIN32_MSVC"; then
    XPCOM_GLUE_LIBS='$(DIST)/lib/$(LIB_PREFIX)xpcomglue.$(LIB_SUFFIX) $(DIST)/lib/$(LIB_PREFIX)string_s.$(LIB_SUFFIX) $(DIST)/lib/$(LIB_PREFIX)string_obsolete_s.$(LIB_SUFFIX)'
else
    XPCOM_GLUE_LIBS='-L${DIST}/bin -L${DIST}/lib -lxpcomglue -lstring_s -lstring_obsolete_s'
fi

dnl ========================================================
if test "$MOZ_DEBUG" || test "$NS_TRACE_MALLOC"; then
    MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS=
fi

if test "$MOZ_LDAP_XPCOM"; then
    LDAP_CFLAGS='-I${DIST}/public/ldap'
    if test "$_WIN32_MSVC"; then
        LDAP_LIBS='$(DIST)/lib/$(LIB_PREFIX)nsldap32v50.${LIB_SUFFIX} $(DIST)/lib/$(LIB_PREFIX)/nsldappr32v50.${LIB_SUFFIX}'
    else
        LDAP_LIBS='-L${DIST}/bin -L${DIST}/lib -lldap50 -llber50 -lprldap50'
    fi
fi

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

dnl libpr0n on by default
AC_DEFINE(USE_IMG2)

if test "$SUNCTL"; then
    dnl older versions of glib do not seem to have gmodule which ctl needs
    _SAVE_CFLAGS=$CFLAGS
    CFLAGS="$CFLAGS $GLIB_CFLAGS"
    AC_LANG_SAVE
    AC_LANG_C
    AC_TRY_COMPILE([#include <gmodule.h>],
        [ int x = 1; x++; ],,
        [AC_MSG_ERROR([Cannot build ctl without gmodule support in glib.])])
    AC_LANG_RESTORE
    CFLAGS=$_SAVE_CFLAGS
    AC_DEFINE(SUNCTL)
fi

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

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(RC)
AC_SUBST(RCFLAGS)
AC_SUBST(WINDRES)
AC_SUBST(USE_SHORT_LIBNAME)
AC_SUBST(IMPLIB)
AC_SUBST(FILTER)
AC_SUBST(BIN_FLAGS)
AC_SUBST(NS_USE_NATIVE)
AC_SUBST(MOZ_WIDGET_TOOLKIT)
AC_SUBST(MOZ_WIDGET_TOOLKIT_LDFLAGS)
AC_SUBST(WIDGET_DLL)
AC_SUBST(GFXWIN_DLL)
AC_SUBST(MOZ_GFX_TOOLKIT)
AC_SUBST(MOZ_GFX_TOOLKIT_LDFLAGS)
AC_SUBST(MOZ_UPDATE_XTERM)
AC_SUBST(MOZ_MATHML)
AC_SUBST(MOZ_SVG)
AC_SUBST(TX_EXE)
AC_SUBST(MOZ_JS_LIBS)
AC_SUBST(MOZ_PSM)
AC_SUBST(BUILD_MODULES)
AC_SUBST(MOZ_DEBUG)
AC_SUBST(MOZ_DEBUG_MODULES)
AC_SUBST(MOZ_PROFILE_MODULES)
AC_SUBST(MOZ_DEBUG_ENABLE_DEFS)
AC_SUBST(MOZ_DEBUG_DISABLE_DEFS)
AC_SUBST(MOZ_DEBUG_FLAGS)
AC_SUBST(MOZ_DEBUG_LDFLAGS)
AC_SUBST(MOZ_DBGRINFO_MODULES)
AC_SUBST(MOZ_EXTENSIONS)
AC_SUBST(MOZ_JSDEBUGGER)
AC_SUBST(ENABLE_EAZEL_PROFILER)
AC_SUBST(EAZEL_PROFILER_CFLAGS)
AC_SUBST(EAZEL_PROFILER_LIBS)
AC_SUBST(XPCOM_GLUE_LIBS)
AC_SUBST(MOZ_PERF_METRICS)
AC_SUBST(GC_LEAK_DETECTOR)
AC_SUBST(MOZ_LOG_REFCNT)
AC_SUBST(MOZ_LEAKY)
AC_SUBST(MOZ_JPROF)
AC_SUBST(MOZ_XPCTOOLS)
AC_SUBST(MOZ_INSURE)
AC_SUBST(MOZ_INSURE_DIRS)
AC_SUBST(MOZ_INSURE_EXCLUDE_DIRS)
AC_SUBST(MOZ_INSURIFYING)
AC_SUBST(MOZ_LDAP_XPCOM)
AC_SUBST(MOZ_LDAP_XPCOM_EXPERIMENTAL)
AC_SUBST(LDAP_CFLAGS)
AC_SUBST(LDAP_LIBS)
AC_SUBST(LIBICONV)

AC_SUBST(HAVE_XIE)
AC_SUBST(MOZ_XIE_LIBS)
AC_SUBST(MOZ_XPRINT_CFLAGS)
AC_SUBST(MOZ_XPRINT_LDFLAGS)
AC_SUBST(MOZ_ENABLE_XPRINT)
AC_SUBST(MOZ_ENABLE_POSTSCRIPT)
AC_SUBST(MOZ_XINERAMA_LIBS)
AC_SUBST(MOZ_ENABLE_XINERAMA)

AC_SUBST(XPCOM_USE_LEA)
AC_SUBST(BUILD_SHARED_LIBS)
AC_SUBST(BUILD_STATIC_LIBS)
AC_SUBST(MOZ_STATIC_COMPONENT_LIBS)
AC_SUBST(MOZ_STATIC_COMPONENTS)
AC_SUBST(MOZ_META_COMPONENTS)
AC_SUBST(ENABLE_TESTS)
AC_SUBST(IBMBIDI)
AC_SUBST(SUNCTL)
AC_SUBST(ACCESSIBILITY)
AC_SUBST(MOZ_USER_DIR)

AC_SUBST(ENABLE_STRIP)
AC_SUBST(USE_ELF_DYNSTR_GC)
AC_SUBST(USE_PREBINDING)
AC_SUBST(MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS)
AC_SUBST(MOZ_COMPONENT_NSPR_LIBS)
AC_SUBST(MOZ_COMPONENT_XPCOM_LIBS)
AC_SUBST(XPCOM_LIBS)

AC_SUBST(MOZ_GLE)

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

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

dnl win32 options
AC_SUBST(MOZ_PROFILE)
AC_SUBST(MOZ_COVERAGE)
AC_SUBST(MOZ_MAPINFO)
AC_SUBST(MOZ_BROWSE_INFO)
AC_SUBST(MOZ_TOOLS_DIR)
AC_SUBST(CYGWIN_WRAPPER)

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

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

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

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

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

if test "$TX_EXE"; then
  COMPILE_CFLAGS=`echo $COMPILE_CFLAGS | sed 's/MOZILLA_CLIENT/XML_UNICODE/'`
  COMPILE_CXXFLAGS=`echo $COMPILE_CXXFLAGS | sed 's/MOZILLA_CLIENT/XML_UNICODE/'`
fi

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

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

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

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

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

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

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

AC_SUBST(HOST_CC)
AC_SUBST(HOST_CXX)
AC_SUBST(HOST_CFLAGS)
AC_SUBST(HOST_CXXFLAGS)
AC_SUBST(HOST_OPTIMIZE_FLAGS)
AC_SUBST(HOST_AR)
AC_SUBST(HOST_LD)
AC_SUBST(HOST_RANLIB)
AC_SUBST(HOST_NSPR_MDCPUCFG)

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

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

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

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

fi # $no_x

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

if test "$OS_ARCH" = "OS2"; then
  AC_DEFINE(XP_PC)
  AC_DEFINE(XP_OS2)
  if test "$VACPP" = "yes"; then
      LIBS='so32dll.lib tcp32dll.lib'
  fi
elif test "$OS_ARCH" = "WINNT"; then
  AC_DEFINE(XP_PC)
elif test "$OS_ARCH" = "BeOS"; then
  AC_DEFINE(XP_BEOS)
  MOZ_MOVEMAIL=1
elif test "$OS_ARCH" = "Darwin"; then
  AC_DEFINE(XP_UNIX)
  AC_DEFINE(UNIX_EMBED)
  AC_DEFINE(UNIX_LDAP)
  AC_DEFINE(UNIX_ASYNC_DNS)
elif test "$OS_ARCH" = "POSIX_for_OpenVMS_AXP"; then
  AC_DEFINE(XP_UNIX)
  AC_DEFINE(UNIX_ASYNC_DNS)
else
  AC_DEFINE(XP_UNIX)
  AC_DEFINE(UNIX_ASYNC_DNS)
  MOZ_MOVEMAIL=1
fi
AC_SUBST(MOZ_MOVEMAIL)

AC_DEFINE(JS_THREADSAFE)
AC_DEFINE(NS_PRINT_PREVIEW)
AC_DEFINE(NS_PRINTING)

if test "$MOZ_DEBUG"; then
    AC_DEFINE(MOZ_REFLOW_PERF)
    AC_DEFINE(MOZ_REFLOW_PERF_DSP)
fi

if test "$ACCESSIBILITY" -a "$MOZ_ENABLE_GTK2" ; then
    AC_DEFINE(MOZ_ACCESSIBILITY_ATK)
fi

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

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

# Save the defines header file before autoconf removes it.
# (Do not add AC_DEFINE calls after this line.)
  _CONFIG_TMP=confdefs-tmp.h
  _CONFIG_DEFS_H=mozilla-config.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.
 */

#ifndef _MOZILLA_CONFIG_H_
#define _MOZILLA_CONFIG_H_
EOF
  sort confdefs.h >> $_CONFIG_TMP

  cat >> $_CONFIG_TMP <<\EOF

#endif /* _MOZILLA_CONFIG_H_ */

EOF

  # Only write mozilla-config.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

    echo ==== $_CONFIG_DEFS_H =================================
    cat $_CONFIG_DEFS_H
  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 $MAKEFILES variable.
dnl
dnl OpenVMS gets a line overflow on the long eval command, so use a temp file.
dnl
my_srcdir=$srcdir
case "$target_os" in
msvc*|mksnt*|cygwin*|mingw*)
    my_srcdir=`cygpath -w ${srcdir} | sed  's|\\\\|/|g'`
    MAKEFILES=`echo $MAKEFILES | sed -e 's|/cygdrive/\(.\)/|\1:/|g'`
    my_perl=$_WIN32_PERL
    ;;
*)
    my_perl=$PERL
    ;;
esac

dnl Get mozilla version from central milestone file
MOZILLA_VERSION=`$my_perl $my_srcdir/config/milestone.pl -topsrcdir $my_srcdir`
AC_SUBST(MOZILLA_VERSION)

echo $MAKEFILES | $my_perl $my_srcdir/build/autoconf/acoutput-fast.pl > conftest.sh
. ./conftest.sh
rm conftest.sh

echo $MAKEFILES > unallmakefiles

AC_OUTPUT($MAKEFILES)

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

unset MAKEFILES
unset CONFIG_FILES

if test -z "$MOZ_NATIVE_NSPR" || test "$MOZ_LDAP_XPCOM"; then
    ac_configure_args="$_SUBDIR_CONFIG_ARGS --with-dist-prefix=$MOZ_BUILD_ROOT/dist --with-mozilla"
    if test "$_WIN32_MSVC" && test "$NS_TRACE_MALLOC"; then
       ac_configure_args="$ac_configure_args --enable-debug --disable-optimize"
    fi
    if test -n "$HAVE_64BIT_OS"; then
        ac_configure_args="$ac_configure_args --enable-64bit"
    fi
    AC_OUTPUT_SUBDIRS(nsprpub)
    ac_configure_args="$_SUBDIR_CONFIG_ARGS"
fi

if test -z "$MOZ_NATIVE_NSPR"; then
    # Hack to deal with the fact that we use NSPR_CFLAGS everywhere
    AC_MSG_WARN([Recreating autoconf.mk with updated nspr-config output])
    if test ! "$VACPP" && test -z "$_WIN32_MSVC"; then
        NSPR_LIBS=`./nsprpub/config/nspr-config --prefix=$MOZ_BUILD_ROOT/dist --exec-prefix=$MOZ_BUILD_ROOT/dist --libs`
        $PERL -pi.bak -e "s {^NSPR_LIBS\s*=.*} {NSPR_LIBS = $NSPR_LIBS }" config/autoconf.mk
    fi
    if test -z "$_WIN32_MSVC"; then
        NSPR_CFLAGS=`./nsprpub/config/nspr-config --prefix=$MOZ_BUILD_ROOT/dist --exec-prefix=$MOZ_BUILD_ROOT/dist --cflags`
        $PERL -pi.bak -e "s {^NSPR_CFLAGS\s*=.*} {NSPR_CFLAGS = $NSPR_CFLAGS }" config/autoconf.mk
    fi
    rm -f config/autoconf.mk.bak
fi

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

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

    ac_configure_args="$_SUBDIR_CONFIG_ARGS --prefix=$MOZ_BUILD_ROOT/dist --with-dist-prefix=$MOZ_BUILD_ROOT/dist --without-nss --with-mozilla"
    if test -n "$HAVE_64BIT_OS"; then
        ac_configure_args="$ac_configure_args --enable-64bit"
    fi
    AC_OUTPUT_SUBDIRS(directory/c-sdk)
    ac_configure_args="$_SUBDIR_CONFIG_ARGS"
fi