path: root/old-configure.in

dnl -*- Mode: Autoconf; tab-width: 4; indent-tabs-mode: nil; -*-
dnl vi: set tabstop=4 shiftwidth=4 expandtab syntax=m4:
dnl This Source Code Form is subject to the terms of the Mozilla Public
dnl License, v. 2.0. If a copy of the MPL was not distributed with this
dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.

dnl Process this file with autoconf to produce a configure script.
dnl ========================================================
AC_PREREQ(2.13)
AC_INIT(config/config.mk)
AC_CONFIG_AUX_DIR(${srcdir}/build/autoconf)
AC_CANONICAL_SYSTEM

dnl ========================================================
dnl =
dnl = Don't change the following 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="$CXXFLAGS"
_SUBDIR_LDFLAGS="$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 ========================================================
MOZPNG=10635

dnl Set the minimum version of toolkit libs used by mozilla
dnl ========================================================
GLIB_VERSION=2.42
GLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_42
GLIB_VERSION_MAX_ALLOWED=GLIB_VERSION_2_42
CAIRO_VERSION=1.10
GTK2_VERSION=2.18.0
GTK3_VERSION=3.14.0
GDK_VERSION_MAX_ALLOWED=GDK_VERSION_3_14
W32API_VERSION=3.14
DBUS_VERSION=0.60

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

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

LDFLAGS="$LDFLAGS $LINKER_LDFLAGS"

if test "$COMPILE_ENVIRONMENT"; then
    MOZ_ANDROID_NDK
fi # COMPILE_ENVIRONMENT

case "$target" in
*-android*|*-linuxandroid*)
    ;;
*-linux*)
    AC_PATH_PROG(OBJCOPY,objcopy)
    ;;
esac

AC_SUBST(OBJCOPY)

dnl ========================================================
dnl Checks for compilers.
dnl ========================================================

if test "$COMPILE_ENVIRONMENT"; then

# Run some logic to figure out exe extensions (mostly for mingw's sake)
AC_EXEEXT

if test "$target" != "$host"; then
    MOZ_CROSS_COMPILER
else
    AC_PROG_CC
    case "$target" in
    *-mingw*)
      # Work around the conftest.exe access problem on Windows
      sleep 2
    esac
    AC_PROG_CXX
    MOZ_PATH_PROGS(AS, $AS as, $CC)
    AC_CHECK_PROGS(STRIP, strip, :)
    AC_CHECK_PROGS(OTOOL, otool, :)
fi

MOZ_TOOL_VARIABLES

dnl ========================================================
dnl Special win32 checks
dnl ========================================================

WINVER=601

case "$target" in
*-mingw*)
    if test "$GCC" != "yes"; then
        # Check to see if we are really running in a msvc environemnt
        _WIN32_MSVC=1

        # Make sure compilers are valid
        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 <new.h>],
            [ unsigned *test = new unsigned(42); ],,
            AC_MSG_ERROR([\$(CXX) test failed.  You must have MS VC++ in your path to build.]) )
        AC_LANG_RESTORE

        changequote(,)
        _MSVC_VER_FILTER='s|.*[^!-~]([0-9]+\.[0-9]+\.[0-9]+(\.[0-9]+)?).*|\1|p'
        changequote([,])

        AC_DEFINE(_CRT_SECURE_NO_WARNINGS)
        AC_DEFINE(_CRT_NONSTDC_NO_WARNINGS)
        AC_DEFINE(_USE_MATH_DEFINES) # Otherwise MSVC's math.h doesn't #define M_PI.

        _CC_SUITE=14
        MSVC_C_RUNTIME_DLL=vcruntime140.dll
        MSVC_CXX_RUNTIME_DLL=msvcp140.dll

        # -Zc:sizedDealloc- disables C++14 global sized deallocation (see bug 1160146)
        CXXFLAGS="$CXXFLAGS -Zc:sizedDealloc-"

        if test -n "$WIN_UCRT_REDIST_DIR"; then
          if test ! -d "$WIN_UCRT_REDIST_DIR"; then
            AC_MSG_ERROR([Invalid Windows UCRT Redist directory: ${WIN_UCRT_REDIST_DIR}])
          fi
          WIN_UCRT_REDIST_DIR=`cd "$WIN_UCRT_REDIST_DIR" && (pwd -W 2>/dev/null || pwd)`
        fi

        AC_SUBST(MSVC_C_RUNTIME_DLL)
        AC_SUBST(MSVC_CXX_RUNTIME_DLL)

        AC_DEFINE(HAVE_SEH_EXCEPTIONS)

        if test -n "$WIN32_REDIST_DIR"; then
          if test ! -d "$WIN32_REDIST_DIR"; then
            AC_MSG_ERROR([Invalid Win32 Redist directory: ${WIN32_REDIST_DIR}])
          fi
          WIN32_REDIST_DIR=`cd "$WIN32_REDIST_DIR" && (pwd -W 2>/dev/null || pwd)`
        fi

        # Check linker version, except in lld builds
        case "$LINKER" in
        *lld*)
            ;;
        *)
            _LD_FULL_VERSION=`"${LINKER}" -v 2>&1 | sed -nre "$_MSVC_VER_FILTER"`
            _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
            ;;
        esac

        INCREMENTAL_LINKER=1

        unset _MSVC_VER_FILTER

        WRAP_STL_INCLUDES=1
        STL_FLAGS="-I${DIST}/stl_wrappers"
    else
        # Check w32api version
        _W32API_MAJOR_VERSION=`echo $W32API_VERSION | $AWK -F\. '{ print $1 }'`
        _W32API_MINOR_VERSION=`echo $W32API_VERSION | $AWK -F\. '{ print $2 }'`
        AC_MSG_CHECKING([for w32api version >= $W32API_VERSION])
        AC_TRY_COMPILE([#include <w32api.h>],
            #if (__W32API_MAJOR_VERSION < $_W32API_MAJOR_VERSION) || \
                (__W32API_MAJOR_VERSION == $_W32API_MAJOR_VERSION && \
                 __W32API_MINOR_VERSION < $_W32API_MINOR_VERSION)
                #error "test failed."
            #endif
            , [ res=yes ], [ res=no ])
        AC_MSG_RESULT([$res])
        if test "$res" != "yes"; then
            AC_MSG_ERROR([w32api version $W32API_VERSION or higher required.])
        fi
        # strsafe.h on mingw uses macros for function deprecation that pollutes namespace
        # causing problems with local implementations with the same name.
        AC_DEFINE(STRSAFE_NO_DEPRECATE)
    fi # !GNU_CC

    CFLAGS="$CFLAGS -D_HAS_EXCEPTIONS=0"
    CXXFLAGS="$CXXFLAGS -D_HAS_EXCEPTIONS=0"

    AC_DEFINE_UNQUOTED(WINVER,0x$WINVER)
    AC_DEFINE_UNQUOTED(_WIN32_WINNT,0x$WINVER)
    # Require OS features provided by IE 8.0 (Win7)
    AC_DEFINE_UNQUOTED(_WIN32_IE,0x0800)

    ;;
esac

if test -n "$_WIN32_MSVC"; then
    SKIP_PATH_CHECKS=1
    SKIP_COMPILER_CHECKS=1
    SKIP_LIBRARY_CHECKS=1

    # Since we're skipping compiler and library checks, hard-code
    # some facts here.
    AC_DEFINE(HAVE_IO_H)
    AC_DEFINE(HAVE_ISATTY)
fi

fi # COMPILE_ENVIRONMENT

AC_SUBST(GNU_CC)
AC_SUBST(GNU_CXX)

AC_SUBST_LIST(STL_FLAGS)
AC_SUBST(WRAP_STL_INCLUDES)

dnl ========================================================
dnl Checks for programs.
dnl ========================================================
if test "$COMPILE_ENVIRONMENT"; then

AC_PATH_XTRA

XCFLAGS="$X_CFLAGS"

fi # COMPILE_ENVIRONMENT

dnl ========================================================
dnl set the defaults first
dnl ========================================================
MOZ_USER_DIR=".mozilla"

MOZ_FIX_LINK_PATHS="-Wl,-rpath-link,${DIST}/bin -Wl,-rpath-link,${prefix}/lib"

MOZ_FS_LAYOUT=unix

dnl Configure platform-specific CPU architecture compiler options.
dnl ==============================================================
if test "$COMPILE_ENVIRONMENT"; then
    MOZ_ARCH_OPTS
fi # COMPILE_ENVIRONMENT

dnl ========================================================
dnl Android libstdc++
dnl ========================================================

MOZ_ANDROID_CPU_ARCH
if test "$COMPILE_ENVIRONMENT"; then
    MOZ_ANDROID_STLPORT
fi # COMPILE_ENVIRONMENT

dnl ========================================================
dnl Suppress Clang Argument Warnings
dnl ========================================================
WARNINGS_CFLAGS="$_WARNINGS_CFLAGS"
if test -n "${CLANG_CC}${CLANG_CL}"; then
    WARNINGS_CFLAGS="-Qunused-arguments $WARNINGS_CFLAGS"
    CPPFLAGS="-Qunused-arguments ${CPPFLAGS}"
fi
if test -n "${CLANG_CXX}${CLANG_CL}"; then
    _WARNINGS_CXXFLAGS="-Qunused-arguments ${_WARNINGS_CXXFLAGS}"
fi

if test -n "$COMPILE_ENVIRONMENT"; then
   MOZ_CONFIG_SANITIZE
fi

dnl ========================================================
dnl GNU specific defaults
dnl ========================================================
if test "$GNU_CC"; then
    MMX_FLAGS="-mmmx"
    SSE_FLAGS="-msse"
    SSE2_FLAGS="-msse2"
    SSSE3_FLAGS="-mssse3"
    CFLAGS="$CFLAGS -fno-strict-aliasing"
    DSO_CFLAGS=''

    if test "$OS_ARCH" != "WINNT" -o -z "$CLANG_CC"; then
        DSO_PIC_CFLAGS='-fPIC'
        ASFLAGS="$ASFLAGS -fPIC"
    fi

    AC_MSG_CHECKING([for --noexecstack option to as])
    _SAVE_CFLAGS=$CFLAGS
    CFLAGS="$CFLAGS -Wa,--noexecstack"
    AC_TRY_COMPILE(,,AC_MSG_RESULT([yes])
                     [ASFLAGS="$ASFLAGS -Wa,--noexecstack"],
                     AC_MSG_RESULT([no]))
    CFLAGS=$_SAVE_CFLAGS
    AC_MSG_CHECKING([for -z noexecstack option to ld])
    _SAVE_LDFLAGS=$LDFLAGS
    LDFLAGS="$LDFLAGS -Wl,-z,noexecstack"
    AC_TRY_LINK(,,AC_MSG_RESULT([yes]),
                  AC_MSG_RESULT([no])
                  LDFLAGS=$_SAVE_LDFLAGS)

    AC_MSG_CHECKING([for -z text option to ld])
    _SAVE_LDFLAGS=$LDFLAGS
    LDFLAGS="$LDFLAGS -Wl,-z,text"
    AC_TRY_LINK(,,AC_MSG_RESULT([yes]),
                  AC_MSG_RESULT([no])
                  LDFLAGS=$_SAVE_LDFLAGS)

    AC_MSG_CHECKING([for -z relro option to ld])
    _SAVE_LDFLAGS=$LDFLAGS
    LDFLAGS="$LDFLAGS -Wl,-z,relro"
    AC_TRY_LINK(,,AC_MSG_RESULT([yes]),
                  AC_MSG_RESULT([no])
                  LDFLAGS=$_SAVE_LDFLAGS)

    AC_MSG_CHECKING([for -z nocopyreloc option to ld])
    _SAVE_LDFLAGS=$LDFLAGS
    LDFLAGS="$LDFLAGS -Wl,-z,nocopyreloc"
    AC_TRY_LINK(,,AC_MSG_RESULT([yes]),
                  AC_MSG_RESULT([no])
                  LDFLAGS=$_SAVE_LDFLAGS)

    AC_MSG_CHECKING([for -Bsymbolic-functions option to ld])
    _SAVE_LDFLAGS=$LDFLAGS
    LDFLAGS="$LDFLAGS -Wl,-Bsymbolic-functions"
    AC_TRY_LINK(,,AC_MSG_RESULT([yes]),
                  AC_MSG_RESULT([no])
                  LDFLAGS=$_SAVE_LDFLAGS)

    AC_MSG_CHECKING([for --build-id=sha1 option to ld])
    _SAVE_LDFLAGS=$LDFLAGS
    LDFLAGS="$LDFLAGS -Wl,--build-id=sha1"
    AC_TRY_LINK(,,AC_MSG_RESULT([yes]),
                  AC_MSG_RESULT([no])
                  LDFLAGS=$_SAVE_LDFLAGS)

    AC_MSG_CHECKING([for --ignore-unresolved-symbol option to ld])
    HAVE_LINKER_SUPPORT_IGNORE_UNRESOLVED=
    _SAVE_LDFLAGS=$LDFLAGS
    LDFLAGS="$LDFLAGS -Wl,--ignore-unresolved-symbol,environ"
    AC_TRY_LINK(,,AC_MSG_RESULT([yes])
                  [HAVE_LINKER_SUPPORT_IGNORE_UNRESOLVED=1],
                  AC_MSG_RESULT([no]))
    LDFLAGS=$_SAVE_LDFLAGS

    # Check for -mssse3 on $CC
    AC_MSG_CHECKING([if toolchain supports -mssse3 option])
    HAVE_TOOLCHAIN_SUPPORT_MSSSE3=
    _SAVE_CFLAGS=$CFLAGS
    CFLAGS="$CFLAGS -mssse3"
    AC_TRY_COMPILE([asm ("pmaddubsw %xmm2,%xmm3");],,AC_MSG_RESULT([yes])
                     [HAVE_TOOLCHAIN_SUPPORT_MSSSE3=1],
                     AC_MSG_RESULT([no]))
    CFLAGS=$_SAVE_CFLAGS

    # Check for -msse4.1 on $CC
    AC_MSG_CHECKING([if toolchain supports -msse4.1 option])
    HAVE_TOOLCHAIN_SUPPORT_MSSE4_1=
    _SAVE_CFLAGS=$CFLAGS
    CFLAGS="$CFLAGS -msse4.1"
    AC_TRY_COMPILE([asm ("pmulld %xmm6,%xmm0");],,AC_MSG_RESULT([yes])
                     [HAVE_TOOLCHAIN_SUPPORT_MSSE4_1=1],
                     AC_MSG_RESULT([no]))
    CFLAGS=$_SAVE_CFLAGS

    case "${CPU_ARCH}" in
    x86 | x86_64)
      AC_MSG_CHECKING(for x86 AVX2 asm support in compiler)
      AC_TRY_COMPILE([],
                     [asm volatile ("vpermq      \$0xd8,%ymm0,%ymm0 \n");],
                     result="yes", result="no")
      AC_MSG_RESULT("$result")
      if test "$result" = "yes"; then
          HAVE_X86_AVX2=1
      fi
      ;;

    ppc*)
      AC_MSG_CHECKING([whether we can enable AltiVec support])
      HAVE_ALTIVEC=
      _SAVE_CFLAGS=$CFLAGS
      CFLAGS="$CFLAGS -maltivec"
      AC_TRY_COMPILE(,,AC_MSG_RESULT([yes])
                       [HAVE_ALTIVEC=1],
                       AC_MSG_RESULT([no]))
      CFLAGS=$_SAVE_CFLAGS
      ;;
    esac

    DSO_LDOPTS='-shared'
    if test "$GCC_USE_GNU_LD"; then
        # Some tools like ASan use a runtime library that is only
        # linked against executables, so we must allow undefined
        # symbols for shared objects in some cases.
        if test -z "$MOZ_ASAN$MOZ_MSAN$MOZ_UBSAN$MOZ_TSAN$FUZZING_INTERFACES"; then
            # Don't allow undefined symbols in libraries
            DSO_LDOPTS="$DSO_LDOPTS -Wl,-z,defs"

            # BSDs need `environ' exposed for posix_spawn (bug 753046)
            case "$OS_TARGET" in
            DragonFly|FreeBSD|NetBSD|OpenBSD)
                if test -n "$HAVE_LINKER_SUPPORT_IGNORE_UNRESOLVED"; then
                    DSO_LDOPTS="$DSO_LDOPTS -Wl,--ignore-unresolved-symbol,environ"
                else
                    DSO_LDOPTS="$DSO_LDOPTS -Wl,--warn-unresolved-symbols"
                fi
                ;;
            esac
        fi
    fi

    _DEFINES_CFLAGS="-include $_objdir/mozilla-config.h -DMOZILLA_CLIENT"

    ASFLAGS="$ASFLAGS $_DEFINES_CFLAGS"
fi

if test "$GNU_CXX"; then
    CXXFLAGS="$CXXFLAGS -fno-exceptions -fno-strict-aliasing"

    _DEFINES_CXXFLAGS="-DMOZILLA_CLIENT -include $_objdir/mozilla-config.h"
fi

dnl ========================================================
dnl = Enable DMD
dnl ========================================================

if test "$MOZ_DMD"; then
    if test "${CPU_ARCH}" = "arm"; then
        CFLAGS="$CFLAGS -funwind-tables"
        CXXFLAGS="$CXXFLAGS -funwind-tables"
    fi
fi

dnl ========================================================
dnl System overrides of the defaults for host
dnl ========================================================
case "$host" in
*mingw*)
    if test -n "$_WIN32_MSVC"; then
        HOST_CFLAGS="$HOST_CFLAGS"
    else
        HOST_CFLAGS="$HOST_CFLAGS -mwindows"
    fi
    HOST_CFLAGS="$HOST_CFLAGS -DXP_WIN -DWIN32 -D_WIN32 -D_CRT_SECURE_NO_WARNINGS"
    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O2}"
    HOST_BIN_SUFFIX=.exe

    case "${host_cpu}" in
    i*86)
        if test -n "$_WIN32_MSVC"; then
            HOST_LDFLAGS="$HOST_LDFLAGS -MACHINE:X86"
        fi
        ;;
    x86_64)
        if test -n "$_WIN32_MSVC"; then
            HOST_LDFLAGS="$HOST_LDFLAGS -MACHINE:X64"
        fi
        HOST_CFLAGS="$HOST_CFLAGS -D_AMD64_"
        ;;
    esac
    ;;

*-darwin*)
    HOST_CFLAGS="$HOST_CFLAGS -DXP_UNIX -DXP_MACOSX"
    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O3}"
    ;;

*-linux*|*-kfreebsd*-gnu|*-gnu*)
    HOST_CFLAGS="$HOST_CFLAGS -DXP_UNIX"
    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O3}"
    ;;

*)
    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 "$target" in
*-darwin*)
    MOZ_OPTIMIZE_FLAGS="-O3"
    CXXFLAGS="$CXXFLAGS -stdlib=libc++"
    DSO_LDOPTS=''
    # The ExceptionHandling framework is needed for Objective-C exception
    # logging code in nsObjCExceptions.h. Currently we only use that in debug
    # builds.
    MOZ_DEBUG_LDFLAGS="$MOZ_DEBUG_LDFLAGS -framework ExceptionHandling";

    dnl DTrace and -dead_strip don't interact well. See bug 403132.
    dnl ===================================================================
    if test "x$enable_dtrace" = "xyes"; then
        echo "Skipping -dead_strip because DTrace is enabled. See bug 403132."
    else
        dnl check for the presence of the -dead_strip linker flag
        AC_MSG_CHECKING([for -dead_strip option to ld])
        _SAVE_LDFLAGS=$LDFLAGS
        LDFLAGS="$LDFLAGS -Wl,-dead_strip"
        AC_TRY_LINK(,[return 0;],_HAVE_DEAD_STRIP=1,_HAVE_DEAD_STRIP=)
        if test -n "$_HAVE_DEAD_STRIP" ; then
            AC_MSG_RESULT([yes])
            MOZ_OPTIMIZE_LDFLAGS="-Wl,-dead_strip"
        else
            AC_MSG_RESULT([no])
        fi

        LDFLAGS=$_SAVE_LDFLAGS
    fi

    MOZ_FIX_LINK_PATHS="-Wl,-executable_path,${DIST}/bin"
    ;;

*-android*|*-linuxandroid*)
    if test "$COMPILE_ENVIRONMENT" -a -n "$MOZ_MEMORY"; then
        MOZ_LINKER=1
    fi

    if test -z "$CLANG_CC"; then
        MOZ_OPTIMIZE_FLAGS="-freorder-blocks -fno-reorder-functions -Os"
    else
        # From https://github.com/android-ndk/ndk/issues/133#issuecomment-308549264
        # -Oz is smaller than -Os on clang.
        MOZ_OPTIMIZE_FLAGS="-Oz"
        # Disable the outliner, which causes performance regressions, and is
        # enabled on some platforms at -Oz.
        if test -z "$MOZ_LTO"; then
            DISABLE_OUTLINER="-mno-outline"
            _SAVE_CFLAGS=$CFLAGS
            CFLAGS="$CFLAGS $DISABLE_OUTLINER"
            AC_TRY_COMPILE(,,[MOZ_OPTIMIZE_FLAGS="$MOZ_OPTIMIZE_FLAGS $DISABLE_OUTLINER"])
            CFLAGS="$_SAVE_CFLAGS"
        else
            DISABLE_OUTLINER="-Wl,-plugin-opt=-enable-machine-outliner=never"
            _SAVE_LDFLAGS=$LDFLAGS
            LDFLAGS="$LDFLAGS $MOZ_LTO_LDFLAGS $DISABLE_OUTLINER"
            AC_TRY_LINK(,,[MOZ_OPTIMIZE_LDFLAGS="$MOZ_OPTIMIZE_LDFLAGS $DISABLE_OUTLINER"])
            LDFLAGS="$_SAVE_LDFLAGS"
        fi
    fi
    ;;

*-*linux*)
    if test "$GNU_CC" -o "$GNU_CXX"; then
        MOZ_PGO_OPTIMIZE_FLAGS="-O3"
        if test -n "$MOZ_DEBUG"; then
            MOZ_OPTIMIZE_FLAGS="-Os"
        else
            MOZ_OPTIMIZE_FLAGS="-O2"
        fi
        if test -z "$CLANG_CC"; then
           MOZ_OPTIMIZE_FLAGS="-freorder-blocks $MOZ_OPTIMIZE_FLAGS"
        fi
    fi

    case "${target_cpu}" in
    alpha*)
        CFLAGS="$CFLAGS -mieee"
        CXXFLAGS="$CXXFLAGS -mieee"
    ;;
    esac
    ;;
*-mingw*)
    DSO_CFLAGS=
    DSO_PIC_CFLAGS=
    # certain versions of cygwin's makedepend barf on the
    # #include <string> vs -I./dist/include/string issue so don't use it
    if test -n "$GNU_CC" -o -n "$CLANG_CC"; then
        # $GNU_CC will match gcc and clang; while $CLANG_CC will match only clang
        if test -z "$CLANG_CC"; then
            AC_MSG_ERROR(Firefox cannot be built with mingw-gcc and requires a mingw-clang toolchain to work)
        fi

        DSO_LDOPTS='-shared'
        # mingw doesn't require kernel32, user32, and advapi32 explicitly
        LIBS="$LIBS -luuid -lusp10 -lgdi32 -lwinmm -lwsock32 -luserenv -lsecur32"
        MOZ_FIX_LINK_PATHS=

        MOZ_OPTIMIZE_FLAGS="-O2"

        WIN32_CONSOLE_EXE_LDFLAGS=-mconsole
        WIN32_GUI_EXE_LDFLAGS=-mwindows

        # Silence problematic clang warnings
        CXXFLAGS="$CXXFLAGS -Wno-incompatible-ms-struct"
        LDFLAGS="$LDFLAGS -Wl,--no-insert-timestamp"
    else
        TARGET_COMPILER_ABI=msvc
        STRIP='echo not_strip'
        # aarch64 doesn't support subsystems below 6.02
        if test "$CPU_ARCH" = "aarch64"; then
            WIN32_SUBSYSTEM_VERSION=6.02
        else
            WIN32_SUBSYSTEM_VERSION=6.01
        fi
        WIN32_CONSOLE_EXE_LDFLAGS=-SUBSYSTEM:CONSOLE,$WIN32_SUBSYSTEM_VERSION
        WIN32_GUI_EXE_LDFLAGS=-SUBSYSTEM:WINDOWS,$WIN32_SUBSYSTEM_VERSION
        DSO_LDOPTS=-SUBSYSTEM:WINDOWS,$WIN32_SUBSYSTEM_VERSION
        _DEFINES_CFLAGS="-FI $_objdir/mozilla-config.h -DMOZILLA_CLIENT"
        _DEFINES_CXXFLAGS="-FI $_objdir/mozilla-config.h -DMOZILLA_CLIENT"
        CFLAGS="$CFLAGS -W3 -Gy -Zc:inline"
        CXXFLAGS="$CXXFLAGS -W3 -Gy -Zc:inline"
        if test -z "$CLANG_CL"; then
            CPPFLAGS="$CPPFLAGS -utf-8"
        fi
        if test "$CPU_ARCH" = "x86"; then
            dnl VS2012+ defaults to -arch:SSE2. We want to target nothing
            dnl more recent, so set that explicitly here unless another
            dnl target arch has already been set.
            changequote(,)
            if test -z `echo $CFLAGS | grep -i [-/]arch:`; then
              CFLAGS="$CFLAGS -arch:SSE2"
            fi
            if test -z `echo $CXXFLAGS | grep -i [-/]arch:`; then
              CXXFLAGS="$CXXFLAGS -arch:SSE2"
            fi
            changequote([,])
            SSE_FLAGS="-arch:SSE"
            SSE2_FLAGS="-arch:SSE2"
            dnl MSVC allows the use of intrinsics without any flags
            dnl and doesn't have a separate arch for SSSE3
            SSSE3_FLAGS="-arch:SSE2"
        fi
        dnl clang-cl requires appropriate flags to enable SSSE3 support
        dnl on all architectures.
        if test -n "$CLANG_CL"; then
            SSSE3_FLAGS="-mssse3"
        fi
        dnl VS2013+ supports -Gw for better linker optimizations.
        dnl http://blogs.msdn.com/b/vcblog/archive/2013/09/11/introducing-gw-compiler-switch.aspx
        dnl Disabled on ASan because it causes false-positive ODR violations.
        if test -z "$MOZ_ASAN"; then
            CFLAGS="$CFLAGS -Gw"
            CXXFLAGS="$CXXFLAGS -Gw"
        else
            # String tail merging doesn't play nice with ASan's ODR checker.
            LDFLAGS="$LDFLAGS -opt:nolldtailmerge"
        fi
        if test -n "$CLANG_CL"; then
            # XXX We should combine some of these with our generic GCC-style
            # warning checks.
            #
            # Suppress the clang-cl warning for the inline 'new' and 'delete' in mozalloc
            CXXFLAGS="$CXXFLAGS -Wno-inline-new-delete"
            # We use offsetof on non-POD objects all the time.
            # We also suppress this warning on other platforms.
            CXXFLAGS="$CXXFLAGS -Wno-invalid-offsetof"
            # This warns for reasonable things like:
            #   enum { X = 0xffffffffU };
            # which is annoying for IDL headers.
            CXXFLAGS="$CXXFLAGS -Wno-microsoft-enum-value"
            # This warns for cases that would be reached by the Microsoft
            # #include rules, but also currently warns on cases that would
            # *also* be reached by standard C++ include rules.  That
            # behavior doesn't seem useful, so we turn it off.
            CXXFLAGS="$CXXFLAGS -Wno-microsoft-include"
            # We normally error out on unknown pragmas, but since clang-cl
            # claims to be MSVC, it would be difficult to add
            # #if defined(_MSC_VER) && !defined(__clang__) everywhere we
            # use such pragmas, so just ignore them.
            CFLAGS="$CFLAGS -Wno-unknown-pragmas"
            CXXFLAGS="$CXXFLAGS -Wno-unknown-pragmas"
            # We get errors about various #pragma intrinsic directives from
            # clang-cl, and we don't need to hear about those.
            CFLAGS="$CFLAGS -Wno-ignored-pragmas"
            CXXFLAGS="$CXXFLAGS -Wno-ignored-pragmas"
            # clang-cl's Intrin.h marks things like _ReadWriteBarrier
            # as __attribute((__deprecated__)).  This is nice to know,
            # but since we don't get the equivalent warning from MSVC,
            # let's just ignore it.
            CFLAGS="$CFLAGS -Wno-deprecated-declarations"
            CXXFLAGS="$CXXFLAGS -Wno-deprecated-declarations"
            # We use a function like:
            #   __declspec(noreturn) __inline void f() {}
            # which -Winvalid-noreturn complains about.  Again, MSVC seems
            # OK with it, so let's silence the warning.
            CFLAGS="$CFLAGS -Wno-invalid-noreturn"
            CXXFLAGS="$CXXFLAGS -Wno-invalid-noreturn"
            # Missing |override| on virtual function declarations isn't
            # something that MSVC currently warns about.
            CXXFLAGS="$CXXFLAGS -Wno-inconsistent-missing-override"
            # We use -DHAS_EXCEPTIONS=0, which removes the |throw()|
            # declaration on |operator delete(void*)|.  However, clang-cl
            # must internally declare |operator delete(void*)| differently,
            # which causes this warning for virtually every file in the
            # tree.  clang-cl doesn't support -fno-exceptions or equivalent,
            # so there doesn't seem to be any way to convince clang-cl to
            # declare |delete| differently.  Therefore, suppress this
            # warning.
            CXXFLAGS="$CXXFLAGS -Wno-implicit-exception-spec-mismatch"
            # Macros like STDMETHOD() and IFACEMETHOD() can declare
            # __attribute__((nothrow)) on their respective method declarations,
            # while the definitions are left without the matching attribute.
            CXXFLAGS="$CXXFLAGS -Wno-microsoft-exception-spec"
            # At least one MSVC header and several headers in-tree have
            # unused typedefs, so turn this on.
            CXXFLAGS="$CXXFLAGS -Wno-unused-local-typedef"
            # jemalloc uses __declspec(allocator) as a profiler hint,
            # which clang-cl doesn't understand.
            CXXFLAGS="$CXXFLAGS -Wno-ignored-attributes"
            # __attribute__((unused)) really means "might be unused" and
            # we use it to avoid warnings about things that are unused
            # in some compilation units, but used in many others.  This
            # warning insists on complaining about the latter case, which
            # is annoying, and rather noisy.
            CXXFLAGS="$CXXFLAGS -Wno-used-but-marked-unused"
        fi
        # Silence VS2017 15.5+ TR1 deprecation warnings hit by older gtest versions
        CXXFLAGS="$CXXFLAGS -D_SILENCE_TR1_NAMESPACE_DEPRECATION_WARNING"
        LIBS="$LIBS user32.lib gdi32.lib winmm.lib wsock32.lib advapi32.lib secur32.lib"
        MOZ_DEBUG_LDFLAGS='-DEBUG'
        if test "$HOST_OS_ARCH" != "WINNT"; then
          # %_PDB% is a special signal to emit only the PDB basename. This
          # avoids problems in Windows tools that don't like forward-slashes.
          MOZ_DEBUG_LDFLAGS="$MOZ_DEBUG_LDFLAGS -PDBALTPATH:%_PDB%"
        fi
        # Use a higher optimization level for clang-cl, so we can come closer
        # to MSVC's performance numbers (see bug 1443590).
        if test -n "$CLANG_CL"; then
            MOZ_OPTIMIZE_FLAGS='-O2'
        else
            MOZ_OPTIMIZE_FLAGS='-O1 -Oi'
        fi
        MOZ_FIX_LINK_PATHS=
        LDFLAGS="$LDFLAGS -LARGEADDRESSAWARE"
        if test -z "$DEVELOPER_OPTIONS"; then
            LDFLAGS="$LDFLAGS -RELEASE"
        fi
        dnl Minimum reqiurement of Gecko is VS2015 or later which supports
        dnl both SSSE3 and SSE4.1.
        HAVE_TOOLCHAIN_SUPPORT_MSSSE3=1
        HAVE_TOOLCHAIN_SUPPORT_MSSE4_1=1
        dnl allow AVX2 code from VS2015
        HAVE_X86_AVX2=1
    fi
    AC_DEFINE(WIN32_LEAN_AND_MEAN)
    dnl See http://support.microsoft.com/kb/143208 to use STL
    AC_DEFINE(NOMINMAX)
    BIN_SUFFIX='.exe'
    MOZ_USER_DIR="Mozilla"

    case "$host_os" in
    cygwin*|msvc*|mks*)
        AC_MSG_ERROR([Using a Cygwin build environment is unsupported. Configure cannot check for presence of necessary headers. Please upgrade to MozillaBuild; see https://developer.mozilla.org/en/Windows_Build_Prerequisites.])
        ;;
    esac

    case "$target" in
    i*86-*)
        if test -n "$GNU_CC"; then
            CFLAGS="$CFLAGS -mstackrealign"
            CXXFLAGS="$CXXFLAGS -mstackrealign"
            LDFLAGS="$LDFLAGS -Wl,--large-address-aware"
        else
            DSO_LDOPTS="$DSO_LDOPTS -MACHINE:X86"
            LDFLAGS="$LDFLAGS -SAFESEH"
        fi

        AC_DEFINE(_X86_)
        ;;
    x86_64-*)
        if test -n "$_WIN32_MSVC"; then
            DSO_LDOPTS="$DSO_LDOPTS -MACHINE:X64"
        fi
        AC_DEFINE(_AMD64_)
        ;;
    aarch64-*)
        if test -n "$_WIN32_MSVC"; then
            DSO_LDOPTS="$DSO_LDOPTS -MACHINE:ARM64"
        fi
        AC_DEFINE(_ARM64_)
        ;;
    *)
        AC_DEFINE(_CPU_ARCH_NOT_DEFINED)
        ;;
    esac
    ;;

*-netbsd*)
    DSO_CFLAGS=''
    CFLAGS="$CFLAGS -Dunix"
    CXXFLAGS="$CXXFLAGS -Dunix"
    if $CC -E - -dM </dev/null | grep __ELF__ >/dev/null; then
        DSO_PIC_CFLAGS='-fPIC -DPIC'
        DSO_LDOPTS='-shared'
        MOZ_PROGRAM_LDFLAGS="$MOZ_PROGRAM_LDFLAGS -Wl,--export-dynamic"
    else
        DSO_PIC_CFLAGS='-fPIC -DPIC'
        DSO_LDOPTS='-shared'
    fi
    # This will fail on a.out systems prior to 1.5.1_ALPHA.
    if test "$LIBRUNPATH"; then
        DSO_LDOPTS="-Wl,-R$LIBRUNPATH $DSO_LDOPTS"
    fi
    ;;

*-openbsd*)
    if test -z "$X11BASE"; then
        X11BASE=/usr/X11R6
    fi
    MOZ_FIX_LINK_PATHS="$MOZ_FIX_LINK_PATHS -Wl,-rpath-link,${X11BASE}/lib"
    DSO_CFLAGS=''
    DSO_PIC_CFLAGS='-fPIC'
    DSO_LDOPTS='-shared -fPIC'
    if test "$LIBRUNPATH"; then
        DSO_LDOPTS="-R$LIBRUNPATH $DSO_LDOPTS"
    fi
    ;;

*-solaris*)
    MOZ_FIX_LINK_PATHS="-L${DIST}/bin"
    ;;

esac

if test -z "$MOZ_OPTIMIZE_FLAGS"; then
    MOZ_OPTIMIZE_FLAGS="-O"
fi

AC_SUBST_LIST(MMX_FLAGS)
AC_SUBST_LIST(SSE_FLAGS)
AC_SUBST_LIST(SSE2_FLAGS)
AC_SUBST_LIST(SSSE3_FLAGS)

AC_SUBST(MOZ_LINKER)
if test -n "$MOZ_LINKER"; then
  AC_DEFINE(MOZ_LINKER)
  MOZ_LINKER_EXTRACT=1
  AC_CHECK_PROGS(XZ, xz)
fi

if test -z "$COMPILE_ENVIRONMENT"; then
    SKIP_COMPILER_CHECKS=1
    SKIP_LIBRARY_CHECKS=1
    MOZ_DEBUGGING_OPTS
else
    MOZ_COMPILER_OPTS
fi # COMPILE_ENVIRONMENT

if test -z "$SKIP_COMPILER_CHECKS"; then
dnl Checks for typedefs, structures, and compiler characteristics.
dnl ========================================================
AC_C_CONST
AC_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_LANG_CPLUSPLUS
AC_LANG_C

AC_LANG_CPLUSPLUS

MOZ_CXX11

AC_LANG_C

case "${OS_TARGET}" in
Darwin)
  ;;
*)
  STL_FLAGS="-I${DIST}/stl_wrappers"
  WRAP_STL_INCLUDES=1
  ;;
esac

if test "$MOZ_BUILD_APP" = "tools/crashreporter"; then
    WRAP_STL_INCLUDES=
fi

dnl Checks for header files.
dnl ========================================================
AC_HEADER_DIRENT
case "$target_os" in
bitrig*|dragonfly*|freebsd*|openbsd*)
# for stuff like -lXshm
    CPPFLAGS="${CPPFLAGS} ${X_CFLAGS}"
    ;;
esac

dnl Check for sin_len and sin6_len - used by SCTP; only appears in Mac/*BSD generally
AC_CACHE_CHECK(for sockaddr_in.sin_len,
                   ac_cv_sockaddr_in_sin_len,
                   [AC_TRY_COMPILE([#ifdef HAVE_SYS_TYPES_H
                                    #include <sys/types.h>
                                    #endif
                                    #include <netinet/in.h>
                                    struct sockaddr_in x;
                                    void *foo = (void*) &x.sin_len;],
                                   [],
                                   [ac_cv_sockaddr_in_sin_len=true],
                                   [ac_cv_sockaddr_in_sin_len=false])])
if test "$ac_cv_sockaddr_in_sin_len" = true ; then
  AC_DEFINE(HAVE_SIN_LEN)
dnl HAVE_CONN_LEN must be the same as HAVE_SIN_LEN (and HAVE_SIN6_LEN too)
  AC_DEFINE(HAVE_SCONN_LEN)
fi

AC_CACHE_CHECK(for sockaddr_in6.sin6_len,
               ac_cv_sockaddr_in6_sin6_len,
               [AC_TRY_COMPILE([#ifdef HAVE_SYS_TYPES_H
                                #include <sys/types.h>
                                #endif
                                #include <netinet/in.h>
                                struct sockaddr_in6 x;
                                void *foo = (void*) &x.sin6_len;],
                               [],
                               [ac_cv_sockaddr_in6_sin6_len=true],
                               [ac_cv_sockaddr_in6_sin6_len=false])])
if test "$ac_cv_sockaddr_in6_sin6_len" = true ; then
  AC_DEFINE(HAVE_SIN6_LEN)
fi

AC_CACHE_CHECK(for sockaddr.sa_len,
               ac_cv_sockaddr_sa_len,
               [AC_TRY_COMPILE([#ifdef HAVE_SYS_TYPES_H
                                #include <sys/types.h>
                                #endif
                                #include <sys/socket.h>
                                struct sockaddr x;
                                void *foo = (void*) &x.sa_len;],
                               [],
                               [ac_cv_sockaddr_sa_len=true],
                               [ac_cv_sockaddr_sa_len=false])])
if test "$ac_cv_sockaddr_sa_len" = true ; then
  AC_DEFINE(HAVE_SA_LEN)
fi

dnl Checks for libraries.
dnl ========================================================
AC_CHECK_LIB(c_r, gethostbyname_r)

dnl We don't want to link with libdl even if it's present on OS X, since
dnl it's not used and not part of the default installation. OS/2 has dlfcn
dnl in libc.
dnl We don't want to link against libm or libpthread on Darwin since
dnl they both are just symlinks to libSystem and explicitly linking
dnl against libSystem causes issues when debugging (see bug 299601).
case $target in
*-darwin*)
    ;;
*)
    AC_SEARCH_LIBS(dlopen, dl,
        MOZ_CHECK_HEADER(dlfcn.h,
        AC_DEFINE(HAVE_DLOPEN)))
    ;;
esac

_SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -D_GNU_SOURCE"
AC_CHECK_FUNCS(dladdr memmem)
CFLAGS="$_SAVE_CFLAGS"

if test ! "$GNU_CXX"; then
    AC_CHECK_LIB(C, demangle)
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 -n "$MOZ_X11"; then
    AC_DEFINE_UNQUOTED(FUNCPROTO,15)
    _SAVE_LDFLAGS="$LDFLAGS"
    _SAVE_LIBS="$LIBS"
    LDFLAGS="$XLDFLAGS $LDFLAGS"
    AC_CHECK_LIB(X11, XDrawLines, [XLIBS="-lX11 $XLIBS"],
        [MISSING_X="$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)
        ])

    dnl ========================================================
    dnl = Check for xcb
    dnl ========================================================
    AC_CHECK_LIB(xcb, xcb_connect, [XLIBS="-lxcb $XLIBS"],
        [MISSING_X="$MISSING_X -lxcb"], $XLIBS)
    AC_CHECK_LIB(xcb-shm, xcb_shm_query_version, [XLIBS="-lxcb-shm $XLIBS"],
        [MISSING_X="$MISSING_X -lxcb-shm"], $XLIBS)
    AC_CHECK_LIB(X11-xcb, XGetXCBConnection, [XLIBS="-lX11-xcb $XLIBS"],
        [MISSING_X="$MISSING_X -lX11-xcb"], $XLIBS)

    LDFLAGS="$_SAVE_LDFLAGS"
    LIBS="$_SAVE_LIBS"
fi # $MOZ_X11

AC_SUBST_LIST(XCFLAGS)
AC_SUBST_LIST(XLDFLAGS)
AC_SUBST_LIST(XLIBS)
AC_SUBST_LIST(XEXT_LIBS)
AC_SUBST_LIST(XT_LIBS)

dnl ========================================================
dnl = pthread support
dnl = Start by checking whether the system support pthreads
dnl ========================================================
case "$target_os" in
darwin*)
    MOZ_USE_PTHREADS=1
    ;;
*)
    AC_CHECK_LIB(pthreads, pthread_create,
        MOZ_USE_PTHREADS=1 _PTHREAD_LDFLAGS="-lpthreads",
        AC_CHECK_LIB(pthread, pthread_create,
            MOZ_USE_PTHREADS=1 _PTHREAD_LDFLAGS="-lpthread",
            AC_CHECK_LIB(c_r, pthread_create,
                MOZ_USE_PTHREADS=1 _PTHREAD_LDFLAGS="-lc_r",
                AC_CHECK_LIB(c, pthread_create,
                    MOZ_USE_PTHREADS=1
                )
            )
        )
    )
    ;;
esac

dnl ========================================================
dnl Do the platform specific pthread hackery
dnl ========================================================
if test "$MOZ_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 $? -eq 0; then
        if test -z "`egrep -i '(unrecognize|unknown)' conftest.out | grep pthread`" -a -z "`egrep -i '(error|incorrect)' conftest.out`" ; then
            ac_cv_have_dash_pthread=yes
            case "$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 $? -eq 0; then
            if test -z "`egrep -i '(unrecognize|unknown)' conftest.out | grep pthreads`" -a -z "`egrep -i '(error|incorrect)' conftest.out`" ; then
                ac_cv_have_dash_pthreads=yes
                CFLAGS="$CFLAGS -pthreads"
                CXXFLAGS="$CXXFLAGS -pthreads"
            fi
        fi
        rm -f conftest*
        AC_MSG_RESULT($ac_cv_have_dash_pthreads)
    fi

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

        *-*-linux*|*-*-kfreebsd*-gnu|*-*-gnu*)
            AC_DEFINE(_REENTRANT)
            ;;

    esac
    LDFLAGS="${_PTHREAD_LDFLAGS} ${LDFLAGS}"
    AC_SUBST(MOZ_USE_PTHREADS)
    MOZ_CHECK_HEADERS(pthread.h)
fi


dnl Checks for library functions.
dnl ========================================================
AC_CHECK_FUNCS(stat64 lstat64 truncate64 statvfs64 statvfs statfs64 statfs getpagesize gmtime_r localtime_r arc4random arc4random_buf mallinfo gettid lchown setpriority strerror syscall lutimes)

dnl check for clock_gettime(), the CLOCK_MONOTONIC clock
AC_CACHE_CHECK(for clock_gettime(CLOCK_MONOTONIC),
               ac_cv_clock_monotonic,
               [for libs in "" -lrt; do
                    _SAVE_LIBS="$LIBS"
                    _SAVE_CFLAGS="$CFLAGS"
                    LIBS="$LIBS $libs"
                    CFLAGS="$CFLAGS $DSO_PIC_CFLAGS"
dnl clock_gettime is available on OSX since 10.12, so depending on MACOSX_DEPLOYMENT_TARGET,
dnl we should or not be able to use it. To detect if we can, we need to make the
dnl availability attribute strict, so that compilation fails when the target is < 10.12.
                    AC_TRY_LINK([#define availability(os, ...) availability(os, strict, __VA_ARGS)
                                 #include <time.h>],
                                 [ struct timespec ts;
                                   clock_gettime(CLOCK_MONOTONIC, &ts); ],
                                 ac_cv_clock_monotonic=$libs
                                 LIBS="$_SAVE_LIBS"
                                 CFLAGS="$_SAVE_CFLAGS"
                                 break,
                                 ac_cv_clock_monotonic=no)
                    LIBS="$_SAVE_LIBS"
                    CFLAGS="$_SAVE_CFLAGS"
                done])
if test "$ac_cv_clock_monotonic" != "no"; then
    HAVE_CLOCK_MONOTONIC=1
    REALTIME_LIBS=$ac_cv_clock_monotonic
    AC_DEFINE(HAVE_CLOCK_MONOTONIC)
    AC_SUBST(HAVE_CLOCK_MONOTONIC)
    AC_SUBST_LIST(REALTIME_LIBS)
fi

dnl Turn on warnings-as-errors to prevent implicit declaration of
dnl pthread_cond_timedwait_monotonic_np, which can cause this test to
dnl inadvertently pass even if the function does not really exist.
_SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $WARNINGS_AS_ERRORS"
AC_CACHE_CHECK(for pthread_cond_timedwait_monotonic_np,
               ac_cv_pthread_cond_timedwait_monotonic_np,
               AC_TRY_LINK([#include <pthread.h>],
                           [pthread_cond_timedwait_monotonic_np(0, 0, 0);],
                           ac_cv_pthread_cond_timewait_monotonic_np=yes,
                           ac_cv_pthread_cond_timewait_monotonic_np=no))
if test "$ac_cv_pthread_cond_timewait_monotonic_np" != "no"; then
    AC_DEFINE(HAVE_PTHREAD_COND_TIMEDWAIT_MONOTONIC)
fi
CFLAGS=$_SAVE_CFLAGS

AC_CACHE_CHECK(
    [for res_ninit()],
    ac_cv_func_res_ninit,
    [if test "$OS_TARGET" = NetBSD -o "$OS_TARGET" = OpenBSD; then
        dnl no need for res_ninit() on NetBSD and OpenBSD
        ac_cv_func_res_ninit=no
     else
        AC_TRY_LINK([
            #ifdef linux
            #define _BSD_SOURCE 1
            #endif
            #include <sys/types.h>
            #include <netinet/in.h>
            #include <arpa/nameser.h>
            #include <resolv.h>
            ],
            [int foo = res_ninit(&_res);],
            [ac_cv_func_res_ninit=yes],
            [ac_cv_func_res_ninit=no])
     fi
    ])

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_C

dnl **********************
dnl *** va_copy checks ***
AC_CACHE_CHECK([for an implementation of va_copy()],
               ac_cv_va_copy,
    [AC_TRY_COMPILE([#include <stdarg.h>
                     #include <stdlib.h>
        void f (int i, ...) {
            va_list args1, args2;
            va_start (args1, i);
            va_copy (args2, args1);
            if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
                exit (1);
            va_end (args1); va_end (args2);
        }],
        [f(0, 42); return 0],
        [ac_cv_va_copy=yes],
        [ac_cv_va_copy=no]
    )]
)
AC_CACHE_CHECK([whether va_list can be copied by value],
               ac_cv_va_val_copy,
    [AC_TRY_COMPILE([#include <stdarg.h>
                     #include <stdlib.h>
        void f (int i, ...) {
            va_list args1, args2;
            va_start (args1, i);
            args2 = args1;
            if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
                exit (1);
            va_end (args1); va_end (args2);
        }],
        [f(0, 42); return 0],
        [ac_cv_va_val_copy=yes],
        [ac_cv_va_val_copy=no],
    )]
)
if test "x$ac_cv_va_copy" = "xyes"; then
    AC_DEFINE(VA_COPY, va_copy)
    AC_DEFINE(HAVE_VA_COPY)
fi

if test "x$ac_cv_va_val_copy" = "xno"; then
   AC_DEFINE(HAVE_VA_LIST_AS_ARRAY)
fi

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

ARM_ABI_PREFIX=
if test "$GNU_CC"; then
  if test "$CPU_ARCH" = "arm" ; then
    AC_CACHE_CHECK(for ARM EABI,
        ac_cv_gcc_arm_eabi,
        [AC_TRY_COMPILE([],
                        [
#if defined(__ARM_EABI__)
  return 0;
#else
#error Not ARM EABI.
#endif
                        ],
                        ac_cv_gcc_arm_eabi="yes",
                        ac_cv_gcc_arm_eabi="no")])
    if test "$ac_cv_gcc_arm_eabi" = "yes"; then
        HAVE_ARM_EABI=1
        ARM_ABI_PREFIX=eabi-
    else
        ARM_ABI_PREFIX=oabi-
    fi
  fi

  TARGET_COMPILER_ABI="${TARGET_COMPILER_ABI-${ARM_ABI_PREFIX}gcc3}"
fi

# try harder, when checking for __thread support, see bug 521750 comment #33 and below
# We pass MOZ_OPTIMIZE_LDFLAGS to the linker because if dead_strip is
# enabled, the linker in xcode 4.1 will crash. Without this it would crash when
# linking XUL.
_SAVE_LDFLAGS=$LDFLAGS
LDFLAGS="$LDFLAGS $DSO_PIC_CFLAGS $DSO_LDOPTS $MOZ_OPTIMIZE_LDFLAGS"
AC_CACHE_CHECK(for __thread keyword for TLS variables,
               ac_cv_thread_keyword,
               [AC_TRY_LINK([__thread bool tlsIsMainThread = false;],
                            [return tlsIsMainThread;],
                            ac_cv_thread_keyword=yes,
                            ac_cv_thread_keyword=no)])
LDFLAGS=$_SAVE_LDFLAGS
# The custom dynamic linker doesn't support TLS variables
MOZ_TLS=
if test "$ac_cv_thread_keyword" = yes -a "$MOZ_LINKER" != 1; then
  # mips builds fail with TLS variables because of a binutils bug.
  # See bug 528687
  # OpenBSD doesn't have TLS support, and the test succeeds with clang++
  case "${target}" in
    mips*-*)
      :
      ;;
    *-android*|*-linuxandroid*)
      :
      ;;
    *-openbsd*)
      :
      ;;
    *)
      AC_DEFINE(HAVE_THREAD_TLS_KEYWORD)
      MOZ_TLS=1
      ;;
  esac
fi

dnl Using the custom linker on ARMv6 requires 16k alignment of ELF segments.
if test -n "$MOZ_LINKER"; then
  if test "$CPU_ARCH" = arm; then
    dnl When building for < ARMv7, we need to ensure 16k alignment of ELF segments
    if test -n "$ARM_ARCH" && test "$ARM_ARCH" -lt 7; then
      LDFLAGS="$LDFLAGS -Wl,-z,max-page-size=0x4000 -Wl,-z,common-page-size=0x4000"
      _SUBDIR_LDFLAGS="$_SUBDIR_LDFLAGS -Wl,-z,max-page-size=0x4000 -Wl,-z,common-page-size=0x4000"
    fi
  fi

dnl gold emits wrong sysv-style elf hash tables when building both sysv and
dnl style tables. https://sourceware.org/bugzilla/show_bug.cgi?id=13597
dnl Since the linker only understands the sysv ones, no need to build the
dnl gnu style tables anyways.
  LDFLAGS="$LDFLAGS -Wl,--hash-style=sysv"
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.

AC_HAVE_FUNCS(localeconv)

fi # ! SKIP_COMPILER_CHECKS

if test -n "${COMPILE_ENVIRONMENT}"; then
  MOZ_CHECK_ALLOCATOR
fi

TARGET_XPCOM_ABI=
if test -n "${CPU_ARCH}" -a -n "${TARGET_COMPILER_ABI}"; then
    TARGET_XPCOM_ABI="${CPU_ARCH}-${TARGET_COMPILER_ABI}"
    AC_DEFINE_UNQUOTED(TARGET_XPCOM_ABI, ["${TARGET_XPCOM_ABI}"])
fi

dnl We can't run TRY_COMPILE tests on Windows, so hard-code some
dnl features that Windows actually does support.

if test -n "$SKIP_COMPILER_CHECKS"; then
   dnl Windows has malloc.h
   AC_DEFINE(MALLOC_H, [<malloc.h>])
   AC_DEFINE(HAVE_FORCEINLINE)
   AC_DEFINE(HAVE_LOCALECONV)
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 system libevent Support
dnl ========================================================
MOZ_ARG_WITH_STRING(system-libevent,
[  --with-system-libevent[=PFX]
                          Use system libevent [installed at prefix PFX]],
    LIBEVENT_DIR=$withval)

_SAVE_CFLAGS=$CFLAGS
_SAVE_LDFLAGS=$LDFLAGS
_SAVE_LIBS=$LIBS
if test "$LIBEVENT_DIR" = yes; then
    PKG_CHECK_MODULES(MOZ_LIBEVENT, libevent,
        MOZ_SYSTEM_LIBEVENT=1,
        LIBEVENT_DIR=/usr)
fi
if test -z "$LIBEVENT_DIR" -o "$LIBEVENT_DIR" = no; then
    MOZ_SYSTEM_LIBEVENT=
elif test -z "$MOZ_SYSTEM_LIBEVENT"; then
    CFLAGS="-I${LIBEVENT_DIR}/include $CFLAGS"
    LDFLAGS="-L${LIBEVENT_DIR}/lib $LDFLAGS"
    MOZ_CHECK_HEADER(event.h,
        [if test ! -f "${LIBEVENT_DIR}/include/event.h"; then
             AC_MSG_ERROR([event.h found, but is not in ${LIBEVENT_DIR}/include])
         fi],
        AC_MSG_ERROR([--with-system-libevent requested but event.h not found]))
    AC_CHECK_LIB(event, event_init,
                 [MOZ_SYSTEM_LIBEVENT=1
                  MOZ_LIBEVENT_CFLAGS="-I${LIBEVENT_DIR}/include"
                  MOZ_LIBEVENT_LIBS="-L${LIBEVENT_DIR}/lib -levent"],
                 [MOZ_SYSTEM_LIBEVENT= MOZ_LIBEVENT_CFLAGS= MOZ_LIBEVENT_LIBS=])
fi
CFLAGS=$_SAVE_CFLAGS
LDFLAGS=$_SAVE_LDFLAGS
LIBS=$_SAVE_LIBS

AC_SUBST(MOZ_SYSTEM_LIBEVENT)

if test -z "$SKIP_LIBRARY_CHECKS"; then

dnl ========================================================
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=$LIBS
if test -n "${PNG_DIR}" -a "${PNG_DIR}" != "yes"; then
    CFLAGS="-I${PNG_DIR}/include $CFLAGS"
    LDFLAGS="-L${PNG_DIR}/lib $LDFLAGS"
fi
if test -z "$PNG_DIR" -o "$PNG_DIR" = no; then
    MOZ_SYSTEM_PNG=
else
    AC_CHECK_LIB(png, png_get_valid, [MOZ_SYSTEM_PNG=1 MOZ_PNG_LIBS="-lpng"],
                 AC_MSG_ERROR([--with-system-png requested but no working libpng found]))
    AC_CHECK_LIB(png, png_get_acTL, ,
                 AC_MSG_ERROR([--with-system-png won't work because the system's libpng doesn't have APNG support]))
fi
if test "$MOZ_SYSTEM_PNG" = 1; then
    AC_TRY_COMPILE([ #include <stdio.h>
                     #include <sys/types.h>
                     #include <png.h> ],
                   [ #if PNG_LIBPNG_VER < $MOZPNG
                     #error "Insufficient libpng version ($MOZPNG required)."
                     #endif
                     #ifndef PNG_UINT_31_MAX
                     #error "Insufficient libpng version."
                     #endif ],
                   MOZ_SYSTEM_PNG=1,
                   AC_MSG_ERROR([--with-system-png requested but no working libpng found]))
fi
CFLAGS=$_SAVE_CFLAGS
LDFLAGS=$_SAVE_LDFLAGS
LIBS=$_SAVE_LIBS

if test "${PNG_DIR}" -a -d "${PNG_DIR}" -a "$MOZ_SYSTEM_PNG" = 1; then
    MOZ_PNG_CFLAGS="-I${PNG_DIR}/include"
    MOZ_PNG_LIBS="-L${PNG_DIR}/lib ${MOZ_PNG_LIBS}"
fi

fi # SKIP_LIBRARY_CHECKS

dnl ========================================================
dnl =
dnl = Application
dnl =
dnl ========================================================

MOZ_ARG_HEADER(Application)

ENABLE_SYSTEM_EXTENSION_DIRS=1
MOZ_BRANDING_DIRECTORY=
MOZ_OFFICIAL_BRANDING=
MOZ_AUTH_EXTENSION=1
MOZ_SPELLCHECK=1
MOZ_UNIVERSALCHARDET=1
MOZ_XUL=1
MOZ_ZIPWRITER=1
MOZ_NO_SMART_CARDS=
MOZ_SANDBOX=1
MOZ_BINARY_EXTENSIONS=
MOZ_DEVTOOLS=server

dnl ========================================================
dnl = Trademarked Branding
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(official-branding,
[  --enable-official-branding
                          Enable Official mozilla.org Branding
                          Do not distribute builds with
                          --enable-official-branding unless you have
                          permission to use trademarks per
                          http://www.mozilla.org/foundation/trademarks/ .],
    MOZ_OFFICIAL_BRANDING=1,
    MOZ_OFFICIAL_BRANDING=)

# Allow the application to influence configure with a confvars.sh script.
AC_MSG_CHECKING([if app-specific confvars.sh exists])
if test -f "${srcdir}/${MOZ_BUILD_APP}/confvars.sh" ; then
  AC_MSG_RESULT([${srcdir}/${MOZ_BUILD_APP}/confvars.sh])
  . "${srcdir}/${MOZ_BUILD_APP}/confvars.sh"
else
  AC_MSG_RESULT([no])
fi

dnl ========================================================
dnl Ensure Android SDK and build-tools versions depending on
dnl mobile target.
dnl ========================================================

case "$MOZ_BUILD_APP" in
mobile/android)
    MOZ_ANDROID_SDK
    ;;
esac

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

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

case "$MOZ_WIDGET_TOOLKIT" in

cocoa)
    LDFLAGS="$LDFLAGS -framework Cocoa"
    # Use -Wl as a trick to avoid -framework and framework names from
    # being separated by AC_SUBST_LIST.
    TK_LIBS='-Wl,-framework,Foundation -Wl,-framework,CoreFoundation -Wl,-framework,CoreLocation -Wl,-framework,QuartzCore -Wl,-framework,Carbon -Wl,-framework,CoreAudio -Wl,-framework,CoreVideo -Wl,-framework,AudioToolbox -Wl,-framework,AudioUnit -Wl,-framework,AddressBook -Wl,-framework,OpenGL -Wl,-framework,Security -Wl,-framework,ServiceManagement -Wl,-framework,CoreServices -Wl,-framework,ApplicationServices -Wl,-framework,AppKit'
    TK_CFLAGS=""
    CFLAGS="$CFLAGS $TK_CFLAGS"
    CXXFLAGS="$CXXFLAGS $TK_CFLAGS"
    MOZ_USER_DIR="Mozilla"
    MOZ_FS_LAYOUT=bundle
    ;;

uikit)
    LDFLAGS="$LDFLAGS -framework UIKit"
    TK_CFLAGS=""
    TK_LIBS='-Wl,-framework,Foundation -Wl,-framework,CoreFoundation -Wl,-framework,CoreGraphics -Wl,-framework,CoreText -Wl,-framework,AVFoundation -Wl,-framework,AudioToolbox -Wl,-framework,CoreMedia -Wl,-framework,CoreVideo -Wl,-framework,OpenGLES -Wl,-framework,QuartzCore'
    CFLAGS="$CFLAGS $TK_CFLAGS"
    CXXFLAGS="$CXXFLAGS $TK_CFLAGS"
    MOZ_USER_DIR="Mozilla"
    MOZ_FS_LAYOUT=bundle
    ;;

esac

if test "$OS_TARGET" = Darwin; then
    LDFLAGS="$LDFLAGS -lobjc"
fi

dnl there are a lot of tests on MOZ_ENABLE_GTK below, that are more convenient
dnl to keep that way than testing against MOZ_WIDGET_TOOLKIT
case "$MOZ_WIDGET_TOOLKIT" in
gtk*)
    MOZ_ENABLE_GTK=1
    ;;
esac

if test "$COMPILE_ENVIRONMENT"; then
  if test "$MOZ_WIDGET_TOOLKIT" = gtk; then
    PKG_CHECK_MODULES(MOZ_GTK3, gtk+-3.0 >= $GTK3_VERSION gtk+-unix-print-3.0 glib-2.0 gobject-2.0 gio-unix-2.0 $GDK_PACKAGES)
    MOZ_GTK3_CFLAGS="-I${_topsrcdir}/widget/gtk/compat-gtk3 $MOZ_GTK3_CFLAGS"
    TK_CFLAGS=$MOZ_GTK3_CFLAGS
    TK_LIBS=$MOZ_GTK3_LIBS
    dnl GDK_VERSION_MIN_REQUIRED is not set here as GDK3 deprecated warnings
    dnl are suppressed by widget/gtk/compat-gtk3/gdk/gdkversionmacros.h.
    AC_DEFINE_UNQUOTED(GDK_VERSION_MAX_ALLOWED,$GDK_VERSION_MAX_ALLOWED)
  fi
  if test "$MOZ_ENABLE_GTK"; then
    AC_DEFINE_UNQUOTED(GLIB_VERSION_MIN_REQUIRED,$GLIB_VERSION_MIN_REQUIRED)
    AC_DEFINE_UNQUOTED(GLIB_VERSION_MAX_ALLOWED,$GLIB_VERSION_MAX_ALLOWED)

    if test "$MOZ_X11"; then
      PKG_CHECK_MODULES(MOZ_GTK2, gtk+-2.0 >= $GTK2_VERSION gtk+-unix-print-2.0 glib-2.0 >= $GLIB_VERSION gobject-2.0 gio-unix-2.0 gdk-x11-2.0)
      MOZ_GTK2_CFLAGS="-I${_topsrcdir}/widget/gtk/compat $MOZ_GTK2_CFLAGS"
    fi
  fi
fi # COMPILE_ENVIRONMENT

AC_SUBST(MOZ_FS_LAYOUT)

AC_SUBST_LIST(TK_CFLAGS)
AC_SUBST_LIST(TK_LIBS)

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

AC_SUBST(MOZ_OFFICIAL_BRANDING)
if test -n "$MOZ_OFFICIAL_BRANDING"; then
  if test -z "$MOZ_OFFICIAL_BRANDING_DIRECTORY"; then
    AC_MSG_ERROR([You must specify MOZ_OFFICIAL_BRANDING_DIRECTORY to use --enable-official-branding.])
  else
    MOZ_BRANDING_DIRECTORY=${MOZ_OFFICIAL_BRANDING_DIRECTORY}
    AC_DEFINE(MOZ_OFFICIAL_BRANDING)
  fi
fi

MOZ_ARG_WITH_STRING(branding,
[  --with-branding=dir     Use branding from the specified directory.],
    MOZ_BRANDING_DIRECTORY=$withval)

REAL_BRANDING_DIRECTORY="${MOZ_BRANDING_DIRECTORY}"
if test -z "$REAL_BRANDING_DIRECTORY"; then
  REAL_BRANDING_DIRECTORY=${MOZ_BUILD_APP}/branding/nightly
fi

if test -f "${_topsrcdir}/$REAL_BRANDING_DIRECTORY/configure.sh"; then
  . "${_topsrcdir}/$REAL_BRANDING_DIRECTORY/configure.sh"
fi

AC_SUBST(MOZ_BRANDING_DIRECTORY)

dnl ========================================================
dnl = Distribution ID
dnl ========================================================
MOZ_ARG_WITH_STRING(distribution-id,
[  --with-distribution-id=ID
                          Set distribution-specific id (default=org.mozilla)],
[ val=`echo $withval`
    MOZ_DISTRIBUTION_ID="$val"])

if test -z "$MOZ_DISTRIBUTION_ID"; then
   MOZ_DISTRIBUTION_ID="org.mozilla"
fi

AC_DEFINE_UNQUOTED(MOZ_DISTRIBUTION_ID,"$MOZ_DISTRIBUTION_ID")
AC_SUBST(MOZ_DISTRIBUTION_ID)

dnl ========================================================
dnl = libproxy support
dnl ========================================================

if test "$MOZ_ENABLE_GTK"
then
    MOZ_ENABLE_LIBPROXY=

    MOZ_ARG_ENABLE_BOOL(libproxy,
    [  --enable-libproxy         Enable libproxy support ],
    MOZ_ENABLE_LIBPROXY=1,
    MOZ_ENABLE_LIBPROXY=)

    if test "$MOZ_ENABLE_LIBPROXY"
    then
        PKG_CHECK_MODULES(MOZ_LIBPROXY, libproxy-1.0)
        AC_DEFINE(MOZ_ENABLE_LIBPROXY)
    fi
fi
AC_SUBST(MOZ_ENABLE_LIBPROXY)

dnl ========================================================
dnl = dbus support
dnl ========================================================

if test "$MOZ_ENABLE_GTK"
then
    MOZ_ENABLE_DBUS=1

    MOZ_ARG_DISABLE_BOOL(dbus,
    [  --disable-dbus          Disable dbus support ],
        MOZ_ENABLE_DBUS=,
        MOZ_ENABLE_DBUS=1)

    if test "$MOZ_ENABLE_DBUS"
    then
        PKG_CHECK_MODULES(MOZ_DBUS, dbus-1 >= $DBUS_VERSION)
        PKG_CHECK_MODULES(MOZ_DBUS_GLIB, dbus-glib-1 >= $DBUS_VERSION)
        AC_DEFINE(MOZ_ENABLE_DBUS)
    fi
fi
AC_SUBST(MOZ_ENABLE_DBUS)

AC_TRY_COMPILE([#include <linux/ethtool.h>],
               [ struct ethtool_cmd cmd; cmd.speed_hi = 0; ],
               MOZ_WEBRTC_HAVE_ETHTOOL_SPEED_HI=1)

AC_SUBST(MOZ_WEBRTC_HAVE_ETHTOOL_SPEED_HI)

if test -n "$MOZ_WEBRTC"; then
    if test -n "$MOZ_X11"; then
      MOZ_WEBRTC_X11_LIBS="-lXext -lXdamage -lXfixes -lXcomposite"
    fi
fi

AC_SUBST_LIST(MOZ_WEBRTC_X11_LIBS)

dnl ========================================================
dnl = Apple platform decoder support
dnl ========================================================
if test "$COMPILE_ENVIRONMENT"; then
if test -n "$MOZ_APPLEMEDIA"; then
  # hack in frameworks for fmp4 - see bug 1029974
  # We load VideoToolbox and CoreMedia dynamically, so they don't appear here.
  LDFLAGS="$LDFLAGS -framework AudioToolbox"
  dnl Verify CoreMedia is available.
  AC_CHECK_HEADERS([CoreMedia/CoreMedia.h VideoToolbox/VideoToolbox.h], [],
    [AC_MSG_ERROR([MacOS X 10.9 SDK or later is required])])
fi
fi # COMPILE_ENVIRONMENT

dnl ========================================================
dnl = Handle dependent MEDIA defines
dnl ========================================================

MOZ_WEBM_ENCODER=1
AC_DEFINE(MOZ_WEBM_ENCODER)
AC_SUBST(MOZ_WEBM_ENCODER)

dnl ========================================================
dnl NegotiateAuth
dnl ========================================================

MOZ_ARG_DISABLE_BOOL(negotiateauth,
[  --disable-negotiateauth Disable GSS-API negotiation ],
    MOZ_AUTH_EXTENSION=,
    MOZ_AUTH_EXTENSION=1 )

dnl ========================================================
dnl Searching of system directories for extensions.
dnl Note: this switch is meant to be used for test builds
dnl whose behavior should not depend on what happens to be
dnl installed on the local machine.
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(system-extension-dirs,
[  --disable-system-extension-dirs
                          Disable searching system- and account-global
                          directories for extensions of any kind; use
                          only profile-specific extension directories],
  ENABLE_SYSTEM_EXTENSION_DIRS=,
  ENABLE_SYSTEM_EXTENSION_DIRS=1 )
if test "$ENABLE_SYSTEM_EXTENSION_DIRS"; then
  AC_DEFINE(ENABLE_SYSTEM_EXTENSION_DIRS)
fi

dnl ========================================================
dnl = Universalchardet
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(universalchardet,
[  --disable-universalchardet
                          Disable universal encoding detection],
  MOZ_UNIVERSALCHARDET=,
  MOZ_UNIVERSALCHARDET=1 )

dnl ========================================================
dnl Gamepad support
dnl ========================================================

if test "$COMPILE_ENVIRONMENT" ; then

dnl Moved gamepad platform check to moz.build, linux header check still needed here.
if test "$OS_TARGET" = "Linux"; then
    MOZ_CHECK_HEADER([linux/joystick.h])
    if test "$ac_cv_header_linux_joystick_h" != "yes"; then
      AC_MSG_ERROR([Can't find header linux/joystick.h, needed for gamepad support. Please install Linux kernel headers.])
    fi
fi

fi # COMPILE_ENVIRONMENT


dnl ========================================================
dnl = Breakpad crash reporting (on by default on supported platforms)
dnl ========================================================

case $target in
i?86-*-mingw*|x86_64-*-mingw*|aarch64-*-mingw*)
  MOZ_CRASHREPORTER=1
  ;;
i?86-apple-darwin*|x86_64-apple-darwin*|aarch64-apple-darwin*)
  MOZ_CRASHREPORTER=1
  ;;
*-android*|*-linuxandroid*)
  dnl Android/arm is arm-unknown-linux-androideabi, so android condition should
  dnl be before Linux condition
  dnl The crash reporter prevents crash stacktraces to be logged in the
  dnl logs so we leave it out by default in developer builds.
  if test -z "$DEVELOPER_OPTIONS"; then
    MOZ_CRASHREPORTER=1
  fi
  ;;
i?86-*-linux*|x86_64-*-linux*|arm-*-linux*)
  if test "$MOZ_ENABLE_GTK"; then
    MOZ_CRASHREPORTER=1
  fi
  ;;
esac

MOZ_ARG_DISABLE_BOOL(crashreporter,
[  --disable-crashreporter Disable breakpad crash reporting],
    [MOZ_CRASHREPORTER=],
    [MOZ_CRASHREPORTER=F # Force enable breakpad])

if test "$OS_ARCH" != "$HOST_OS_ARCH" -a "$OS_ARCH" != "WINNT" -a "$OS_ARCH" != "Darwin" -a "$MOZ_WIDGET_TOOLKIT" != "android"; then
  if test "$MOZ_CRASHREPORTER" = F; then
    AC_MSG_ERROR([Cannot --enable-crashreporter, as breakpad tools do not support compiling on $HOST_OS_ARCH while targeting $OS_ARCH.])
  fi
  MOZ_CRASHREPORTER=
fi

if test -n "$MOZ_CRASHREPORTER"; then
   AC_DEFINE(MOZ_CRASHREPORTER)

  if test "$OS_TARGET" = "Linux" && \
    test -z "$SKIP_LIBRARY_CHECKS"; then
    PKG_CHECK_MODULES(MOZ_GTHREAD, gthread-2.0)
  fi

  if test "$OS_ARCH" = "WINNT"; then
    if test -z "$HAVE_64BIT_BUILD" -a -n "$COMPILE_ENVIRONMENT"; then
      MOZ_CRASHREPORTER_INJECTOR=1
      AC_DEFINE(MOZ_CRASHREPORTER_INJECTOR)
    fi
  fi
fi

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

MOZ_ARG_ENABLE_STRING(extensions,
[  --enable-extensions     Enable extensions],
[ for option in `echo $enableval | sed 's/,/ /g'`; do
    if test "$option" = "yes" -o "$option" = "all"; then
        AC_MSG_ERROR([--enable-extensions=$option is no longer supported.])
    elif test "$option" = "no" -o "$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")

dnl Ensure every extension exists, to avoid mostly-inscrutable error messages
dnl when trying to build a nonexistent extension.
for extension in $MOZ_EXTENSIONS; do
    if test ! -d "${srcdir}/extensions/${extension}"; then
        AC_MSG_ERROR([Unrecognized extension provided to --enable-extensions: ${extension}.])
    fi
done

# Avoid defining MOZ_ENABLE_CAIRO_FT on Windows platforms because
# "cairo-ft-font.c" includes <dlfcn.h>, which only exists on posix platforms
if test -n "$MOZ_TREE_FREETYPE" -a "$OS_TARGET" != WINNT; then
   MOZ_ENABLE_CAIRO_FT=1
   FT_FONT_FEATURE="#define CAIRO_HAS_FT_FONT 1"
   CAIRO_FT_CFLAGS="-I$_topsrcdir/modules/freetype2/include"
   AC_SUBST_LIST(CAIRO_FT_CFLAGS)
fi

dnl ========================================================
dnl Updater
dnl ========================================================

MOZ_ARG_DISABLE_BOOL(updater,
[  --disable-updater       Disable building of updater],
    MOZ_UPDATER=,
    MOZ_UPDATER=1 )

if test -n "$MOZ_UPDATER"; then
    AC_DEFINE(MOZ_UPDATER)
fi

dnl ========================================================
dnl parental controls (for Windows Vista)
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(parental-controls,
[  --disable-parental-controls
                          Do not build parental controls],
   MOZ_DISABLE_PARENTAL_CONTROLS=1,
   MOZ_DISABLE_PARENTAL_CONTROLS=)
if test -n "$MOZ_DISABLE_PARENTAL_CONTROLS"; then
    AC_DEFINE(MOZ_DISABLE_PARENTAL_CONTROLS)
fi

AC_SUBST(MOZ_DISABLE_PARENTAL_CONTROLS)

dnl ========================================================
dnl = Disable smartcard support
dnl ========================================================
if test -n "$MOZ_NO_SMART_CARDS"; then
    AC_DEFINE(MOZ_NO_SMART_CARDS)
fi
AC_SUBST(MOZ_NO_SMART_CARDS)

dnl ========================================================
dnl = Sandboxing support
dnl ========================================================
if test -n "$MOZ_TSAN" -o -n "$MOZ_ASAN"; then
    # Bug 1182565: TSan conflicts with sandboxing on Linux.
    # Bug 1287971: LSan also conflicts with sandboxing on Linux.
    case $OS_TARGET in
    Linux|Android)
        MOZ_SANDBOX=
        ;;
    esac
fi

MOZ_ARG_DISABLE_BOOL(sandbox,
[  --disable-sandbox        Disable sandboxing support],
    MOZ_SANDBOX=,
    MOZ_SANDBOX=1)

case "$OS_TARGET" in
WINNT|Darwin|OpenBSD)
;;
Linux)
    case $CPU_ARCH in
        x86_64|x86|arm|aarch64)
        ;;
        # Linux sandbox is only available on x86{,_64} and arm{,64}.
        *)
            MOZ_SANDBOX=
        ;;
    esac
    ;;
*)
    # Only enable the sandbox by default on Linux, OpenBSD, macOS, and Windows
    MOZ_SANDBOX=
;;
esac

if test -n "$MOZ_SANDBOX"; then
    AC_DEFINE(MOZ_SANDBOX)
fi

AC_SUBST(MOZ_SANDBOX)


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

dnl ==============================
dnl === SQLite fdatasync check ===
dnl ==============================
dnl Check to see if fdatasync is available and make use of it
AC_CHECK_FUNC(fdatasync)

dnl ========================================================
dnl = Disable zipwriter
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(zipwriter,
[  --disable-zipwriter     Disable zipwriter component],
    MOZ_ZIPWRITER=,
    MOZ_ZIPWRITER=1 )
AC_SUBST(MOZ_ZIPWRITER)

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

dnl ========================================================
dnl =
dnl = Runtime debugging and Optimization Options
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Runtime debugging and Optimizations)

dnl ========================================================
dnl = Enable code optimization. ON by default.
dnl ========================================================

# Use value from moz.configure if one is defined. Else use our computed
# value.
if test -n "${MOZ_CONFIGURE_OPTIMIZE_FLAGS}"; then
    MOZ_OPTIMIZE_FLAGS=${MOZ_CONFIGURE_OPTIMIZE_FLAGS}
fi

if test "$COMPILE_ENVIRONMENT"; then
if test -n "$MOZ_OPTIMIZE"; then
    AC_MSG_CHECKING([for valid C compiler optimization flags])
    _SAVE_CFLAGS=$CFLAGS
    CFLAGS="$CFLAGS $MOZ_OPTIMIZE_FLAGS"
    AC_TRY_COMPILE([#include <stdio.h>],
        [printf("Hello World\n");],
        _results=yes,
        _results=no)
    AC_MSG_RESULT([$_results])
    if test "$_results" = "no"; then
        AC_MSG_ERROR([These compiler flags for C are invalid: $MOZ_OPTIMIZE_FLAGS])
    fi
    CFLAGS=$_SAVE_CFLAGS
    if test -n "$MOZ_LTO" -a -n "$CLANG_CC"; then
        # When using llvm-based LTO, non numeric optimization levels are
        # not supported by the linker, so force the linker to use -O2 (
        # which doesn't influence the level compilation units are actually
        # compiled at).
        case " $MOZ_OPTIMIZE_FLAGS " in
        *\ -Os\ *|*\ -Oz\ *)
            MOZ_OPTIMIZE_LDFLAGS="$MOZ_OPTIMIZE_LDFLAGS -O2"
            ;;
        esac
    fi
fi
fi # COMPILE_ENVIRONMENT

AC_SUBST_LIST(MOZ_OPTIMIZE_FLAGS)
AC_SUBST_LIST(MOZ_OPTIMIZE_LDFLAGS)
AC_SUBST_LIST(MOZ_PGO_OPTIMIZE_FLAGS)

dnl ========================================================
dnl = Enable runtime logging
dnl ========================================================
AC_DEFINE(MOZ_LOGGING)
AC_DEFINE(FORCE_PR_LOG)

dnl ========================================================
dnl = This will enable logging of addref, release, ctor, dtor.
dnl ========================================================
_ENABLE_LOGREFCNT=42
MOZ_ARG_ENABLE_BOOL(logrefcnt,
[  --enable-logrefcnt      Enable logging of refcounts (default=debug) ],
    _ENABLE_LOGREFCNT=1,
    _ENABLE_LOGREFCNT= )
if test "$_ENABLE_LOGREFCNT" = "1"; then
    AC_DEFINE(FORCE_BUILD_REFCNT_LOGGING)
elif test -z "$_ENABLE_LOGREFCNT"; then
    AC_DEFINE(NO_BUILD_REFCNT_LOGGING)
fi

dnl ========================================================
dnl moz_dump_painting
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(dump-painting,
[  --enable-dump-painting          Enable paint debugging.],
    MOZ_DUMP_PAINTING=1,
    MOZ_DUMP_PAINTING= )
if test -n "$MOZ_DUMP_PAINTING"; then
    AC_DEFINE(MOZ_DUMP_PAINTING)
    AC_DEFINE(MOZ_LAYERS_HAVE_LOG)
fi
if test -n "$MOZ_DEBUG"; then
    AC_DEFINE(MOZ_DUMP_PAINTING)
fi

case "${OS_TARGET}" in
Android|WINNT|Darwin)
  MOZ_GLUE_IN_PROGRAM=
  ;;
*)
  dnl On !Android !Windows !OSX, we only want to link executables against mozglue
  MOZ_GLUE_IN_PROGRAM=1
  AC_DEFINE(MOZ_GLUE_IN_PROGRAM)
  ;;
esac

dnl ========================================================
dnl = Jemalloc build setup
dnl ========================================================
if test -z "$MOZ_MEMORY"; then
  case "${target}" in
    *-mingw*)
      if test -z "$WIN32_REDIST_DIR" -a -z "$MOZ_DEBUG"; then
        AC_MSG_WARN([When not building jemalloc, you need to set WIN32_REDIST_DIR to the path to the Visual C++ Redist (usually VCINSTALLDIR/redist/x86/Microsoft.VC80.CRT, for VC++ v8) if you intend to distribute your build.])
      fi
      ;;
  esac
else
  dnl The generic feature tests that determine how to compute ncpus are long and
  dnl complicated.  Therefore, simply define special cpp variables for the
  dnl platforms we have special knowledge of.
  case "${target}" in
  *-mingw*)
    export MOZ_NO_DEBUG_RTL=1
    ;;
  esac
fi # MOZ_MEMORY
AC_SUBST(MOZ_GLUE_IN_PROGRAM)

dnl ========================================================
dnl = Enable using the clang plugin to build
dnl ========================================================

if test -n "$COMPILE_ENVIRONMENT"; then
MOZ_CONFIG_CLANG_PLUGIN
fi # COMPILE_ENVIRONMENT

dnl ========================================================
dnl = frontend JS debug mode
dnl ========================================================

MOZ_ARG_ENABLE_BOOL(debug-js-modules,
[  --enable-debug-js-modules  Enable debug mode for frontend JS libraries],
   DEBUG_JS_MODULES=1,
   DEBUG_JS_MODULES=)

AC_SUBST(DEBUG_JS_MODULES)

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

dnl ========================================================
dnl = Support for demangling undefined symbols
dnl ========================================================
if test -z "$SKIP_LIBRARY_CHECKS"; then
    AC_LANG_SAVE
    AC_LANG_CPLUSPLUS
    AC_CHECK_FUNCS(__cxa_demangle, HAVE_DEMANGLE=1, HAVE_DEMANGLE=)
    AC_LANG_RESTORE
fi

# Demangle only for debug or DMD builds
MOZ_DEMANGLE_SYMBOLS=
if test "$HAVE_DEMANGLE" && test "$MOZ_DEBUG" -o "$MOZ_DMD"; then
    MOZ_DEMANGLE_SYMBOLS=1
    AC_DEFINE(MOZ_DEMANGLE_SYMBOLS)
fi
AC_SUBST(MOZ_DEMANGLE_SYMBOLS)

dnl ========================================================
dnl = Support for gcc stack unwinding (from gcc 3.3)
dnl ========================================================
if test -z "$SKIP_LIBRARY_CHECKS"; then
    AC_LANG_SAVE
    AC_LANG_CPLUSPLUS
    MOZ_CHECK_HEADER(unwind.h, AC_CHECK_FUNCS(_Unwind_Backtrace))
    AC_LANG_RESTORE
fi

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

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
    MOZ_USER_DIR="$val"
fi])

AC_DEFINE_UNQUOTED(MOZ_USER_DIR,"$MOZ_USER_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 -pipe support])
if test -n "$GNU_CC" -a -n "$GNU_CXX"; then
    dnl Any gcc that supports firefox supports -pipe.
    CFLAGS="$CFLAGS -pipe"
    CXXFLAGS="$CXXFLAGS -pipe"
    AC_MSG_RESULT([yes])
else
    AC_MSG_RESULT([no])
fi

fi # ! SKIP_COMPILER_CHECKS

AC_LANG_C

if test "$COMPILE_ENVIRONMENT"; then
MOZ_EXPAND_LIBS
fi # COMPILE_ENVIRONMENT

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

if test -z "$MOZ_SYSTEM_ZLIB"; then
if test -n "$JS_SHARED_LIBRARY" -o -n "$MOZ_LINKER" -o "$MOZ_WIDGET_TOOLKIT" = android; then
  ZLIB_IN_MOZGLUE=1
  AC_DEFINE(ZLIB_IN_MOZGLUE)
fi
fi

AC_SUBST(ZLIB_IN_MOZGLUE)

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

dnl Check for GLib.
dnl ========================================================

if test -z "$SKIP_PATH_CHECKS"; then
if test -z "${GLIB_CFLAGS}" -o -z "${GLIB_LIBS}" ; then
    if test "$MOZ_ENABLE_GTK" ; then
        PKG_CHECK_MODULES(GLIB, glib-2.0 >= 1.3.7 gobject-2.0)
    fi
fi
fi

if test -z "${GLIB_GMODULE_LIBS}" \
   -a -n "${GLIB_CONFIG}"\
    -a "${GLIB_CONFIG}" != no\
; then
    GLIB_GMODULE_LIBS=`$GLIB_CONFIG gmodule --libs`
fi

AC_SUBST_LIST(GLIB_GMODULE_LIBS)

if test "$USE_FC_FREETYPE"; then
    if test "$COMPILE_ENVIRONMENT"; then
        dnl ========================================================
        dnl = Check for freetype2 functionality
        dnl ========================================================
        if test "$_HAVE_FREETYPE2" -a -z "$MOZ_TREE_FREETYPE"; then
            _SAVE_LIBS="$LIBS"
            _SAVE_CFLAGS="$CFLAGS"
            LIBS="$LIBS $FT2_LIBS"
            CFLAGS="$CFLAGS $FT2_CFLAGS"

            AC_CACHE_CHECK(for FT_Bitmap_Size.y_ppem,
                ac_cv_member_FT_Bitmap_Size_y_ppem,
                [AC_TRY_COMPILE([#include <ft2build.h>
                                 #include FT_FREETYPE_H],
                                [FT_Bitmap_Size s;
                                 if (sizeof s.y_ppem) return 0;
                                 return 1],
                                ac_cv_member_FT_Bitmap_Size_y_ppem=yes,
                                ac_cv_member_FT_Bitmap_Size_y_ppem=no)])
            if test "$ac_cv_member_FT_Bitmap_Size_y_ppem" = yes; then
                HAVE_FT_BITMAP_SIZE_Y_PPEM=1
            else
                HAVE_FT_BITMAP_SIZE_Y_PPEM=0
            fi
            AC_DEFINE_UNQUOTED(HAVE_FT_BITMAP_SIZE_Y_PPEM,
                               $HAVE_FT_BITMAP_SIZE_Y_PPEM,
                               [FT_Bitmap_Size structure includes y_ppem field])

            AC_CHECK_FUNCS(FT_GlyphSlot_Embolden FT_Load_Sfnt_Table)

            LIBS="$_SAVE_LIBS"
            CFLAGS="$_SAVE_CFLAGS"
        fi

        _SAVE_CPPFLAGS="$CPPFLAGS"
        CPPFLAGS="$CPPFLAGS $FT2_CFLAGS $XCFLAGS"
        MOZ_CHECK_HEADERS([fontconfig/fcfreetype.h], ,
            [AC_MSG_ERROR(Can't find header fontconfig/fcfreetype.h.)], [#include <fontconfig/fontconfig.h>])
        CPPFLAGS="$_SAVE_CPPFLAGS"
    fi
fi

dnl ========================================================
dnl Check if we need the 32-bit Linux SSE2 error dialog
dnl ========================================================

AC_SUBST(MOZ_LINUX_32_SSE2_STARTUP_ERROR)

dnl ========================================================
dnl Check for pixman and cairo
dnl ========================================================

MOZ_TREE_CAIRO=1
MOZ_ARG_ENABLE_BOOL(system-cairo,
[ --enable-system-cairo  Obsolete: do not use this option],
AC_MSG_ERROR(--enable-system-cairo is not supported),
MOZ_TREE_CAIRO=1 )

MOZ_TREE_PIXMAN=1
MOZ_ARG_ENABLE_BOOL(system-pixman,
[ --enable-system-pixman Use system pixman (located with pkgconfig)],
MOZ_TREE_PIXMAN=,
MOZ_TREE_PIXMAN=force,
MOZ_TREE_PIXMAN=1 )

if test "$MOZ_TREE_PIXMAN"; then
    AC_DEFINE(MOZ_TREE_PIXMAN)
else
    PKG_CHECK_MODULES(MOZ_PIXMAN, pixman-1 >= 0.19.2)
fi

MOZ_CAIRO_CFLAGS="-I${DIST}/include/cairo"
AC_DEFINE(MOZ_TREE_CAIRO)

if test "$OS_ARCH" = "WINNT"; then
    # For now we assume that we will have a uint64_t available through
    # one of the above headers or mozstdint.h.
    AC_DEFINE(HAVE_UINT64_T)
fi

# Define macros for cairo-features.h
TEE_SURFACE_FEATURE="#define CAIRO_HAS_TEE_SURFACE 1"
if test "$MOZ_X11"; then
    XLIB_SURFACE_FEATURE="#define CAIRO_HAS_XLIB_SURFACE 1"
    XLIB_XRENDER_SURFACE_FEATURE="#define CAIRO_HAS_XLIB_XRENDER_SURFACE 1"
    PS_SURFACE_FEATURE="#define CAIRO_HAS_PS_SURFACE 1"
fi
if test "$_HAVE_FREETYPE2"; then
    FT_FONT_FEATURE="#define CAIRO_HAS_FT_FONT 1"
    MOZ_ENABLE_CAIRO_FT=1
    CAIRO_FT_CFLAGS="$FT2_CFLAGS"
fi

case "$MOZ_WIDGET_TOOLKIT" in
  cocoa | uikit)
    QUARTZ_SURFACE_FEATURE="#define CAIRO_HAS_QUARTZ_SURFACE 1"
    QUARTZ_IMAGE_SURFACE_FEATURE="#define CAIRO_HAS_QUARTZ_IMAGE_SURFACE 1"
    QUARTZ_FONT_FEATURE="#define CAIRO_HAS_QUARTZ_FONT 1"
    ;;
  windows)
    WIN32_DWRITE_FONT_FEATURE="#define CAIRO_HAS_DWRITE_FONT 1"
    WIN32_FONT_FEATURE="#define CAIRO_HAS_WIN32_FONT 1"
    WIN32_SURFACE_FEATURE="#define CAIRO_HAS_WIN32_SURFACE 1"

    if test "$COMPILE_ENVIRONMENT"; then
      MOZ_CHECK_HEADER(d3d10.h, MOZ_ENABLE_D3D10_LAYER=1)
    fi
    ;;
esac
if test "$USE_FC_FREETYPE"; then
    FC_FONT_FEATURE="#define CAIRO_HAS_FC_FONT 1"
fi
AC_SUBST(MOZ_ENABLE_CAIRO_FT)
AC_SUBST(MOZ_ENABLE_D3D10_LAYER)

AC_SUBST(PS_SURFACE_FEATURE)
AC_SUBST(SVG_SURFACE_FEATURE)
AC_SUBST(XLIB_SURFACE_FEATURE)
AC_SUBST(XLIB_XRENDER_SURFACE_FEATURE)
AC_SUBST(QUARTZ_SURFACE_FEATURE)
AC_SUBST(QUARTZ_IMAGE_SURFACE_FEATURE)
AC_SUBST(WIN32_SURFACE_FEATURE)
AC_SUBST(OS2_SURFACE_FEATURE)
AC_SUBST(DIRECTFB_SURFACE_FEATURE)
AC_SUBST(FT_FONT_FEATURE)
AC_SUBST(FC_FONT_FEATURE)
AC_SUBST(WIN32_FONT_FEATURE)
AC_SUBST(WIN32_DWRITE_FONT_FEATURE)
AC_SUBST(QUARTZ_FONT_FEATURE)
AC_SUBST(PNG_FUNCTIONS_FEATURE)
AC_SUBST(QT_SURFACE_FEATURE)
AC_SUBST(TEE_SURFACE_FEATURE)

if test "$MOZ_X11"; then
    MOZ_CAIRO_OSLIBS="$MOZ_CAIRO_OSLIBS $XLDFLAGS -lXrender"
fi

CAIRO_FEATURES_H=gfx/cairo/cairo/src/cairo-features.h

case "$MOZ_WIDGET_TOOLKIT" in
android)
    TK_CFLAGS="$MOZ_CAIRO_CFLAGS $MOZ_PIXMAN_CFLAGS"
    TK_LIBS="$MOZ_CAIRO_LIBS $MOZ_PIXMAN_LIBS"
    ;;
esac

AC_SUBST(MOZ_TREE_CAIRO)
AC_SUBST_LIST(MOZ_CAIRO_CFLAGS)
AC_SUBST_LIST(MOZ_CAIRO_LIBS)
AC_SUBST_LIST(MOZ_CAIRO_OSLIBS)
AC_SUBST(MOZ_TREE_PIXMAN)

BINDGEN_SYSTEM_FLAGS="$_BINDGEN_CFLAGS $NSPR_CFLAGS $NSS_CFLAGS $MOZ_PIXMAN_CFLAGS $MOZ_CAIRO_CFLAGS"
AC_SUBST(BINDGEN_SYSTEM_FLAGS)
BINDGEN_SYSTEM_TOML_FLAGS="$BINDGEN_SYSTEM_FLAGS"
AC_SUBST_TOML_LIST(BINDGEN_SYSTEM_TOML_FLAGS)

dnl ========================================================
dnl disable xul
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(xul,
[  --disable-xul           Disable XUL],
    MOZ_XUL= )
if test "$MOZ_XUL"; then
  AC_DEFINE(MOZ_XUL)
else
  dnl remove extensions that require XUL
  MOZ_EXTENSIONS=`echo $MOZ_EXTENSIONS | sed -e 's/inspector//' -e 's/irc//' -e 's/tasks//'`
fi

AC_SUBST(MOZ_XUL)

dnl ========================================================
dnl necko configuration options
dnl ========================================================

dnl
dnl option to disable necko's wifi scanner
dnl

if test "$MOZ_WIDGET_TOOLKIT"; then

  case "$OS_TARGET" in
    Darwin)
      NECKO_WIFI=1
      ;;
    DragonFly|FreeBSD|WINNT)
      NECKO_WIFI=1
      ;;
    Linux)
      NECKO_WIFI=1
      NECKO_WIFI_DBUS=1
      ;;
  esac

fi

MOZ_ARG_DISABLE_BOOL(necko-wifi,
[  --disable-necko-wifi    Disable necko wifi scanner],
    NECKO_WIFI=,
    NECKO_WIFI=1)

if test "$NECKO_WIFI"; then
  if test -z "$MOZ_ENABLE_DBUS" -a -n "$NECKO_WIFI_DBUS"; then
    AC_MSG_ERROR([Necko WiFi scanning needs DBus on your platform, remove --disable-dbus or use --disable-necko-wifi])
  fi
  AC_DEFINE(NECKO_WIFI)
fi
AC_SUBST(NECKO_WIFI)
AC_SUBST(NECKO_WIFI_DBUS)

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

AC_SUBST_LIST(ASFLAGS)
AC_SUBST(IMPLIB)
AC_SUBST(FILTER)
AC_SUBST(MOZ_AUTH_EXTENSION)
AC_SUBST_LIST(MOZ_DEBUG_LDFLAGS)
AC_SUBST_LIST(WARNINGS_CFLAGS)
AC_SUBST_SET(MOZ_EXTENSIONS)

AC_SUBST(MOZ_UNIVERSALCHARDET)
AC_SUBST(MOZ_SPELLCHECK)
AC_SUBST(MOZ_ANDROID_ANR_REPORTER)
AC_SUBST(MOZ_CRASHREPORTER)
AC_SUBST(MOZ_CRASHREPORTER_INJECTOR)
AC_SUBST(MOZ_STUB_INSTALLER)
AC_SUBST(MOZ_UPDATER)

AC_SUBST(MOZ_ANDROID_APPLICATION_CLASS)
AC_SUBST(MOZ_ANDROID_BROWSER_INTENT_CLASS)
AC_SUBST(INCREMENTAL_LINKER)

AC_SUBST_LIST(MOZ_FIX_LINK_PATHS)

AC_SUBST(MOZ_POST_PROGRAM_COMMAND)
AC_SUBST(MOZ_LINKER_EXTRACT)

if test -n "$MOZ_BINARY_EXTENSIONS"; then
  AC_DEFINE(MOZ_BINARY_EXTENSIONS)
fi

AC_SUBST(MOZ_REQUIRE_SIGNING)
if test "$MOZ_REQUIRE_SIGNING" = 1; then
  AC_DEFINE(MOZ_REQUIRE_SIGNING)
fi

dnl ========================================================
dnl = Mac bundle name prefix
dnl ========================================================
MOZ_ARG_WITH_STRING(macbundlename-prefix,
[  --with-macbundlename-prefix=prefix
                          Prefix for MOZ_MACBUNDLE_NAME],
[ MOZ_MACBUNDLE_NAME_PREFIX="$withval"])

MOZ_MACBUNDLE_NAME=$MOZ_APP_DISPLAYNAME
if test "$MOZ_MACBUNDLE_NAME_PREFIX"; then
  MOZ_MACBUNDLE_NAME="${MOZ_MACBUNDLE_NAME_PREFIX}${MOZ_MACBUNDLE_NAME}"
fi

if test "$MOZ_DEBUG"; then
  MOZ_MACBUNDLE_NAME="${MOZ_MACBUNDLE_NAME}Debug.app"
else
  MOZ_MACBUNDLE_NAME=${MOZ_MACBUNDLE_NAME}.app
fi
AC_SUBST(MOZ_MACBUNDLE_NAME)

dnl Mac bundle identifier (based on MOZ_APP_DISPLAYNAME)
# If the MOZ_MACBUNDLE_ID is defined in the configure.sh, use it
# Otherwise, use MOZ_APP_DISPLAYNAME
if test -z "$MOZ_MACBUNDLE_ID"; then
   MOZ_MACBUNDLE_ID=`echo $MOZ_APP_DISPLAYNAME | tr 'A-Z' 'a-z' | tr -dc 'a-z-'`
fi
MOZ_MACBUNDLE_ID=${MOZ_DISTRIBUTION_ID}.${MOZ_MACBUNDLE_ID}
if test "$MOZ_DEBUG"; then
  MOZ_MACBUNDLE_ID=${MOZ_MACBUNDLE_ID}debug
fi

AC_DEFINE_UNQUOTED(MOZ_MACBUNDLE_ID,$MOZ_MACBUNDLE_ID)
AC_SUBST(MOZ_MACBUNDLE_ID)

dnl ========================================================
dnl = Child Process Name for IPC
dnl ========================================================
if test "$MOZ_WIDGET_TOOLKIT" != "android"; then
  MOZ_CHILD_PROCESS_NAME="plugin-container${BIN_SUFFIX}"
else
  # We want to let Android unpack the file at install time, but it only does
  # so if the file is named libsomething.so. The lib/ path is also required
  # because the unpacked file will be under the lib/ subdirectory and will
  # need to be executed from that path.
  MOZ_CHILD_PROCESS_NAME="libplugin-container.so"
fi
MOZ_CHILD_PROCESS_BUNDLE="plugin-container.app/Contents/MacOS/"
MOZ_CHILD_PROCESS_BUNDLENAME="${MOZ_APP_DISPLAYNAME}CP"

AC_SUBST(MOZ_CHILD_PROCESS_NAME)
AC_SUBST(MOZ_CHILD_PROCESS_BUNDLE)
AC_SUBST(MOZ_CHILD_PROCESS_BUNDLENAME)

# The following variables are available to branding and application
# configuration ($BRANDING/configure.sh and $APPLICATION/confvars.sh):
# - MOZ_APP_VENDOR: Used for application.ini's "Vendor" field, which also
# impacts profile location and user-visible fields.
# - MOZ_APP_DISPLAYNAME: Used in user-visible fields (DLL properties,
# Mac Bundle name, Updater, Installer), it is typically used for nightly
# builds (e.g. Aurora for Firefox).
# - MOZ_APP_PROFILE: When set, used for application.ini's
# "Profile" field, which controls profile location.
# - MOZ_APP_ID: When set, used for application.ini's "ID" field, and
# crash reporter server url.
# - MOZ_PROFILE_MIGRATOR: When set, enables profile migrator.

# The following environment variables used to have an effect, but don't anymore:
# - MOZ_APP_VERSION: Defines the application version number. This was replaced with
# the contents from the version.txt file in the application directory, or
# browser/config/version.txt if there isn't one.
# - MOZ_APP_VERSION_DISPLAY: Defines the application version number. Used
# in the "About" window. This was replaced with the contents from the
# version_display.txt or version.txt in the application directory, or
# browser/config/version_display.txt.

# For extensions and langpacks, we require a max version that is compatible
# across security releases. MOZ_APP_MAXVERSION is our method for doing that.
# 24.0a1 and 24.0a2 aren't affected
# 24.0 becomes 24.*
# 24.1.1 becomes 24.*
IS_ALPHA=`echo $MOZ_APP_VERSION | grep a`
if test -z "$IS_ALPHA"; then
  changequote(,)
  if test "$(basename $MOZ_BUILD_APP)" = "suite"; then
    MOZ_APP_MAXVERSION=`echo $MOZ_APP_VERSION | sed "s|\(^[0-9]*\.[0-9]*\).*|\1|"`.*
  else
    MOZ_APP_MAXVERSION=`echo $MOZ_APP_VERSION | sed "s|\(^[0-9]*\).*|\1|"`.*
  fi
  changequote([,])
else
  MOZ_APP_MAXVERSION=$MOZ_APP_VERSION
fi

AC_SUBST(MOZ_APP_DISPLAYNAME)
AC_SUBST(MOZ_APP_VENDOR)
AC_SUBST(MOZ_APP_PROFILE)
AC_SUBST(MOZ_APP_ID)
AC_SUBST(MAR_CHANNEL_ID)
AC_SUBST(ACCEPTED_MAR_CHANNEL_IDS)
AC_SUBST(MOZ_PROFILE_MIGRATOR)
AC_DEFINE_UNQUOTED(MOZ_APP_UA_NAME, "$MOZ_APP_UA_NAME")
AC_SUBST(MOZ_APP_UA_NAME)
AC_DEFINE_UNQUOTED(MOZ_APP_UA_VERSION, "$MOZ_APP_VERSION")
AC_DEFINE_UNQUOTED(BROWSER_CHROME_URL, $BROWSER_CHROME_URL)
AC_DEFINE_UNQUOTED(BROWSER_CHROME_URL_QUOTED, "$BROWSER_CHROME_URL")

AC_SUBST(MOZ_APP_MAXVERSION)
AC_SUBST(MOZ_UA_OS_AGNOSTIC)
if test -n "$MOZ_UA_OS_AGNOSTIC"; then
  AC_DEFINE(MOZ_UA_OS_AGNOSTIC)
fi

AC_SUBST(MOZ_PKG_SPECIAL)
AC_SUBST(MOZ_SIMPLE_PACKAGE_NAME)

if test "$MOZILLA_OFFICIAL"; then
    # Build revisions should always be present in official builds
    MOZ_INCLUDE_SOURCE_INFO=1
fi

# External builds (specifically Ubuntu) may drop the hg repo information, so we allow to
# explicitly set the repository and changeset information in.
AC_SUBST(MOZ_SOURCE_REPO)
AC_SUBST(MOZ_SOURCE_CHANGESET)
AC_SUBST(MOZ_INCLUDE_SOURCE_INFO)

dnl If we have any service that uploads data (and requires data submission
dnl policy alert), set MOZ_DATA_REPORTING.
dnl We need SUBST for build system and DEFINE for xul preprocessor.
if test -n "$MOZ_TELEMETRY_REPORTING" || test -n "$MOZ_SERVICES_HEALTHREPORT" || test -n "$MOZ_CRASHREPORTER"  || test -n "$MOZ_NORMANDY"; then
  MOZ_DATA_REPORTING=1
  AC_DEFINE(MOZ_DATA_REPORTING)
  AC_SUBST(MOZ_DATA_REPORTING)
fi

dnl win32 options
AC_SUBST(WIN32_REDIST_DIR)
AC_SUBST(WIN_UCRT_REDIST_DIR)

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

CXXFLAGS=`echo \
    $_WARNINGS_CXXFLAGS \
    $_COMPILATION_CXXFLAGS \
    $CXXFLAGS`

COMPILE_CFLAGS=`echo \
    $_DEFINES_CFLAGS \
    $COMPILE_CFLAGS`

COMPILE_CXXFLAGS=`echo \
    $_DEFINES_CXXFLAGS \
    $COMPILE_CXXFLAGS`

HOST_CFLAGS=`echo \
    $_WARNINGS_HOST_CFLAGS \
    $_COMPILATION_HOST_CFLAGS \
    $HOST_CFLAGS`

HOST_CXXFLAGS=`echo \
    $_WARNINGS_HOST_CXXFLAGS \
    $_COMPILATION_HOST_CXXFLAGS \
    $HOST_CXXFLAGS`

AC_SUBST(MOZ_SYSTEM_PNG)

AC_SUBST_LIST(MOZ_PNG_CFLAGS)
AC_SUBST_LIST(MOZ_PNG_LIBS)

HOST_CMFLAGS="-x objective-c -fobjc-exceptions"
HOST_CMMFLAGS="-x objective-c++ -fobjc-exceptions"
OS_COMPILE_CMFLAGS="-x objective-c -fobjc-exceptions"
OS_COMPILE_CMMFLAGS="-x objective-c++ -fobjc-exceptions"
if test "$MOZ_WIDGET_TOOLKIT" = uikit; then
  OS_COMPILE_CMFLAGS="$OS_COMPILE_CMFLAGS -fobjc-abi-version=2 -fobjc-legacy-dispatch"
  OS_COMPILE_CMMFLAGS="$OS_COMPILE_CMMFLAGS -fobjc-abi-version=2 -fobjc-legacy-dispatch"
fi
AC_SUBST(HOST_CMFLAGS)
AC_SUBST(HOST_CMMFLAGS)
AC_SUBST(OS_COMPILE_CMFLAGS)
AC_SUBST(OS_COMPILE_CMMFLAGS)

OS_CFLAGS="$CFLAGS"
OS_CXXFLAGS="$CXXFLAGS"
OS_CPPFLAGS="$CPPFLAGS"
OS_COMPILE_CFLAGS="$COMPILE_CFLAGS"
OS_COMPILE_CXXFLAGS="$COMPILE_CXXFLAGS"
OS_LDFLAGS="$LDFLAGS"
OS_LIBS="$LIBS"
AC_SUBST_LIST(OS_CFLAGS)
AC_SUBST_LIST(OS_CXXFLAGS)
AC_SUBST_LIST(OS_CPPFLAGS)
AC_SUBST_LIST(OS_COMPILE_CFLAGS)
AC_SUBST_LIST(OS_COMPILE_CXXFLAGS)
AC_SUBST_LIST(OS_LDFLAGS)
AC_SUBST(OS_LIBS)

AC_SUBST(HOST_CC)
AC_SUBST(HOST_CXX)
AC_SUBST_LIST(HOST_CFLAGS)
AC_SUBST_LIST(HOST_CPPFLAGS)
AC_SUBST_LIST(HOST_CXXFLAGS)
AC_SUBST(HOST_LDFLAGS)
AC_SUBST_LIST(HOST_OPTIMIZE_FLAGS)
AC_SUBST(HOST_BIN_SUFFIX)

AC_SUBST(TARGET_XPCOM_ABI)
AC_SUBST(HAVE_TOOLCHAIN_SUPPORT_MSSSE3)
AC_SUBST(HAVE_TOOLCHAIN_SUPPORT_MSSE4_1)
AC_SUBST(HAVE_X86_AVX2)
AC_SUBST(HAVE_ALTIVEC)

AC_SUBST_LIST(DSO_CFLAGS)
AC_SUBST_LIST(DSO_PIC_CFLAGS)
AC_SUBST(DSO_LDOPTS)
AC_SUBST(BIN_SUFFIX)
AC_SUBST(USE_N32)
AC_SUBST(WIN32_CONSOLE_EXE_LDFLAGS)
AC_SUBST(WIN32_GUI_EXE_LDFLAGS)

AC_SUBST(MOZ_DEVTOOLS)

AC_SUBST(MOZ_PACKAGE_JSSHELL)

AC_SUBST(DMG_TOOL)

dnl Host JavaScript runtime, if any, to use during cross compiles.
AC_SUBST(JS_BINARY)

AC_SUBST(NSS_EXTRA_SYMBOLS_FILE)

if test -n "$COMPILE_ENVIRONMENT"; then
AC_CHECK_FUNCS(posix_fadvise posix_fallocate)

dnl Check for missing components
if test "$MOZ_X11"; then
    dnl ====================================================
    dnl = Check if X headers exist
    dnl ====================================================
    _SAVE_CFLAGS=$CFLAGS
    CFLAGS="$CFLAGS $XCFLAGS"
    AC_TRY_COMPILE([
        #include <stdio.h>
        #include <stdlib.h>
        #include <X11/Xlib.h>
        #include <X11/Intrinsic.h>
        #include <X11/extensions/XShm.h>
    ],
    [
        Display *dpy = 0;
        if ((dpy = XOpenDisplay(NULL)) == NULL) {
            fprintf(stderr, ": can't open %s\n", XDisplayName(NULL));
            exit(1);
        }
    ], [],
    [ AC_MSG_ERROR([Can't find X headers (install libxt-dev (Debian/Ubuntu), libXt-devel (Fedora), or xorg-x11-libXt-devel (SuSE)).]) ])
    CFLAGS="$_SAVE_CFLAGS"

    if test -n "$MISSING_X"; then
        AC_MSG_ERROR([ Could not find the following X libraries: $MISSING_X ]);
    fi

fi # MOZ_X11

fi # COMPILE_ENVIRONMENT

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

if test "$ACCESSIBILITY" -a "$MOZ_ENABLE_GTK" ; then
    AC_DEFINE(MOZ_ACCESSIBILITY_ATK)
    ATK_FULL_VERSION=`$PKG_CONFIG --modversion atk`
    ATK_MAJOR_VERSION=`echo ${ATK_FULL_VERSION} | $AWK -F\. '{ print $1 }'`
    ATK_MINOR_VERSION=`echo ${ATK_FULL_VERSION} | $AWK -F\. '{ print $2 }'`
    ATK_REV_VERSION=`echo ${ATK_FULL_VERSION} | $AWK -F\. '{ print $3 }'`
    AC_DEFINE_UNQUOTED(ATK_MAJOR_VERSION, $ATK_MAJOR_VERSION)
    AC_DEFINE_UNQUOTED(ATK_MINOR_VERSION, $ATK_MINOR_VERSION)
    AC_DEFINE_UNQUOTED(ATK_REV_VERSION, $ATK_REV_VERSION)
fi

AC_SUBST(MOZ_DEV_EDITION)
if test -n "$MOZ_DEV_EDITION"; then
    AC_DEFINE(MOZ_DEV_EDITION)
fi

if test "$MOZ_DEBUG" -o "$DEVELOPER_OPTIONS"; then
    A11Y_LOG=1
fi
AC_SUBST(A11Y_LOG)
if test -n "$A11Y_LOG"; then
    AC_DEFINE(A11Y_LOG)
fi

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

# Avoid using obsolete NSPR features
AC_DEFINE(NO_NSPR_10_SUPPORT)

MOZ_CREATE_CONFIG_STATUS()

rm -fr confdefs* $ac_clean_files