#
# Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
#
# This code is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 2 only, as
# published by the Free Software Foundation. Oracle designates this
# particular file as subject to the "Classpath" exception as provided
# by Oracle in the LICENSE file that accompanied this code.
#
# This code is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# version 2 for more details (a copy is included in the LICENSE file that
# accompanied this code).
#
# You should have received a copy of the GNU General Public License version
# 2 along with this work; if not, write to the Free Software Foundation,
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
# or visit www.oracle.com if you need additional information or have any
# questions.
#
m4_include([flags-cflags.m4])
m4_include([flags-ldflags.m4])
m4_include([flags-other.m4])
################################################################################
#
# Setup ABI profile (for arm)
#
AC_DEFUN([FLAGS_SETUP_ABI_PROFILE],
[
AC_ARG_WITH(abi-profile, [AS_HELP_STRING([--with-abi-profile],
[specify ABI profile for ARM builds (arm-vfp-sflt,arm-vfp-hflt,arm-sflt, armv5-vfp-sflt,armv6-vfp-hflt,arm64,aarch64) @<:@toolchain dependent@:>@ ])])
if test "x$with_abi_profile" != x; then
if test "x$OPENJDK_TARGET_CPU" != xarm && \
test "x$OPENJDK_TARGET_CPU" != xaarch64; then
AC_MSG_ERROR([--with-abi-profile only available on arm/aarch64])
fi
OPENJDK_TARGET_ABI_PROFILE=$with_abi_profile
AC_MSG_CHECKING([for ABI profle])
AC_MSG_RESULT([$OPENJDK_TARGET_ABI_PROFILE])
if test "x$OPENJDK_TARGET_ABI_PROFILE" = xarm-vfp-sflt; then
ARM_FLOAT_TYPE=vfp-sflt
ARM_ARCH_TYPE_FLAGS='-march=armv7-a -mthumb'
elif test "x$OPENJDK_TARGET_ABI_PROFILE" = xarm-vfp-hflt; then
ARM_FLOAT_TYPE=vfp-hflt
ARM_ARCH_TYPE_FLAGS='-march=armv7-a -mthumb'
elif test "x$OPENJDK_TARGET_ABI_PROFILE" = xarm-sflt; then
ARM_FLOAT_TYPE=sflt
ARM_ARCH_TYPE_FLAGS='-march=armv5t -marm'
elif test "x$OPENJDK_TARGET_ABI_PROFILE" = xarmv5-vfp-sflt; then
ARM_FLOAT_TYPE=vfp-sflt
ARM_ARCH_TYPE_FLAGS='-march=armv5t -marm'
elif test "x$OPENJDK_TARGET_ABI_PROFILE" = xarmv6-vfp-hflt; then
ARM_FLOAT_TYPE=vfp-hflt
ARM_ARCH_TYPE_FLAGS='-march=armv6 -marm'
elif test "x$OPENJDK_TARGET_ABI_PROFILE" = xarm64; then
# No special flags, just need to trigger setting JDK_ARCH_ABI_PROP_NAME
ARM_FLOAT_TYPE=
ARM_ARCH_TYPE_FLAGS=
elif test "x$OPENJDK_TARGET_ABI_PROFILE" = xaarch64; then
# No special flags, just need to trigger setting JDK_ARCH_ABI_PROP_NAME
ARM_FLOAT_TYPE=
ARM_ARCH_TYPE_FLAGS=
else
AC_MSG_ERROR([Invalid ABI profile: "$OPENJDK_TARGET_ABI_PROFILE"])
fi
if test "x$ARM_FLOAT_TYPE" = xvfp-sflt; then
ARM_FLOAT_TYPE_FLAGS='-mfloat-abi=softfp -mfpu=vfp -DFLOAT_ARCH=-vfp-sflt'
elif test "x$ARM_FLOAT_TYPE" = xvfp-hflt; then
ARM_FLOAT_TYPE_FLAGS='-mfloat-abi=hard -mfpu=vfp -DFLOAT_ARCH=-vfp-hflt'
elif test "x$ARM_FLOAT_TYPE" = xsflt; then
ARM_FLOAT_TYPE_FLAGS='-msoft-float -mfpu=vfp'
fi
AC_MSG_CHECKING([for $ARM_FLOAT_TYPE floating point flags])
AC_MSG_RESULT([$ARM_FLOAT_TYPE_FLAGS])
AC_MSG_CHECKING([for arch type flags])
AC_MSG_RESULT([$ARM_ARCH_TYPE_FLAGS])
# Now set JDK_ARCH_ABI_PROP_NAME. This is equivalent to the last part of the
# autoconf target triplet.
[ JDK_ARCH_ABI_PROP_NAME=`$ECHO $OPENJDK_TARGET_AUTOCONF_NAME | $SED -e 's/.*-\([^-]*\)$/\1/'` ]
# Sanity check that it is a known ABI.
if test "x$JDK_ARCH_ABI_PROP_NAME" != xgnu && \
test "x$JDK_ARCH_ABI_PROP_NAME" != xgnueabi && \
test "x$JDK_ARCH_ABI_PROP_NAME" != xgnueabihf; then
AC_MSG_WARN([Unknown autoconf target triplet ABI: "$JDK_ARCH_ABI_PROP_NAME"])
fi
AC_MSG_CHECKING([for ABI property name])
AC_MSG_RESULT([$JDK_ARCH_ABI_PROP_NAME])
AC_SUBST(JDK_ARCH_ABI_PROP_NAME)
fi
# When building with an abi profile, the name of that profile is appended on the
# bundle platform, which is used in bundle names.
if test "x$OPENJDK_TARGET_ABI_PROFILE" != x; then
OPENJDK_TARGET_BUNDLE_PLATFORM="$OPENJDK_TARGET_OS_BUNDLE-$OPENJDK_TARGET_ABI_PROFILE"
fi
])
AC_DEFUN([FLAGS_SETUP_MACOSX_VERSION],
[
# Additional macosx handling
if test "x$OPENJDK_TARGET_OS" = xmacosx; then
# MACOSX_VERSION_MIN specifies the lowest version of Macosx that the built
# binaries should be compatible with, even if compiled on a newer version
# of the OS. It currently has a hard coded value. Setting this also limits
# exposure to API changes in header files. Bumping this is likely to
# require code changes to build.
MACOSX_VERSION_MIN=10.9.0
MACOSX_VERSION_MIN_NODOTS=${MACOSX_VERSION_MIN//\./}
AC_SUBST(MACOSX_VERSION_MIN)
# Setting --with-macosx-version-max=<version> makes it an error to build or
# link to macosx APIs that are newer than the given OS version. The expected
# format for <version> is either nn.n.n or nn.nn.nn. See /usr/include/AvailabilityMacros.h.
AC_ARG_WITH([macosx-version-max], [AS_HELP_STRING([--with-macosx-version-max],
[error on use of newer functionality. @<:@macosx@:>@])],
[
if echo "$with_macosx_version_max" | $GREP -q "^[[0-9]][[0-9]]\.[[0-9]]\.[[0-9]]\$"; then
MACOSX_VERSION_MAX=$with_macosx_version_max
elif echo "$with_macosx_version_max" | $GREP -q "^[[0-9]][[0-9]]\.[[0-9]][[0-9]]\.[[0-9]][[0-9]]\$"; then
MACOSX_VERSION_MAX=$with_macosx_version_max
elif test "x$with_macosx_version_max" = "xno"; then
# Use build system default
MACOSX_VERSION_MAX=
else
AC_MSG_ERROR([osx version format must be nn.n.n or nn.nn.nn])
fi
],
[MACOSX_VERSION_MAX=]
)
MACOSX_VERSION_MAX_NODOTS=${MACOSX_VERSION_MAX//\./}
AC_SUBST(MACOSX_VERSION_MAX)
fi
])
# Reset the global CFLAGS/LDFLAGS variables and initialize them with the
# corresponding configure arguments instead
AC_DEFUN_ONCE([FLAGS_SETUP_USER_SUPPLIED_FLAGS],
[
if test "x$CFLAGS" != "x"; then
AC_MSG_WARN([Ignoring CFLAGS($CFLAGS) found in environment. Use --with-extra-cflags])
fi
if test "x$CXXFLAGS" != "x"; then
AC_MSG_WARN([Ignoring CXXFLAGS($CXXFLAGS) found in environment. Use --with-extra-cxxflags])
fi
if test "x$LDFLAGS" != "x"; then
AC_MSG_WARN([Ignoring LDFLAGS($LDFLAGS) found in environment. Use --with-extra-ldflags])
fi
AC_ARG_WITH(extra-cflags, [AS_HELP_STRING([--with-extra-cflags],
[extra flags to be used when compiling jdk c-files])])
AC_ARG_WITH(extra-cxxflags, [AS_HELP_STRING([--with-extra-cxxflags],
[extra flags to be used when compiling jdk c++-files])])
AC_ARG_WITH(extra-ldflags, [AS_HELP_STRING([--with-extra-ldflags],
[extra flags to be used when linking jdk])])
USER_CFLAGS="$with_extra_cflags"
USER_CXXFLAGS="$with_extra_cxxflags"
USER_LDFLAGS="$with_extra_ldflags"
])
# Setup the sysroot flags and add them to global CFLAGS and LDFLAGS so
# that configure can use them while detecting compilers.
# TOOLCHAIN_TYPE is available here.
# Param 1 - Optional prefix to all variables. (e.g BUILD_)
AC_DEFUN([FLAGS_SETUP_SYSROOT_FLAGS],
[
if test "x[$]$1SYSROOT" != "x"; then
if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
if test "x$OPENJDK_TARGET_OS" = xsolaris; then
# Solaris Studio does not have a concept of sysroot. Instead we must
# make sure the default include and lib dirs are appended to each
# compile and link command line. Must also add -I-xbuiltin to enable
# inlining of system functions and intrinsics.
$1SYSROOT_CFLAGS="-I-xbuiltin -I[$]$1SYSROOT/usr/include"
$1SYSROOT_LDFLAGS="-L[$]$1SYSROOT/usr/lib$OPENJDK_TARGET_CPU_ISADIR \
-L[$]$1SYSROOT/lib$OPENJDK_TARGET_CPU_ISADIR"
# If the devkit contains the ld linker, make sure we use it.
AC_PATH_PROG(SOLARIS_LD, ld, , $DEVKIT_TOOLCHAIN_PATH:$DEVKIT_EXTRA_PATH)
# Make sure this ld is runnable.
if test -f "$SOLARIS_LD"; then
if "$SOLARIS_LD" -V > /dev/null 2> /dev/null; then
$1SYSROOT_LDFLAGS="[$]$1SYSROOT_LDFLAGS -Yl,$(dirname $SOLARIS_LD)"
else
AC_MSG_WARN([Could not run $SOLARIS_LD found in devkit, reverting to system ld])
fi
fi
fi
elif test "x$TOOLCHAIN_TYPE" = xgcc; then
$1SYSROOT_CFLAGS="--sysroot=[$]$1SYSROOT"
$1SYSROOT_LDFLAGS="--sysroot=[$]$1SYSROOT"
elif test "x$TOOLCHAIN_TYPE" = xclang; then
$1SYSROOT_CFLAGS="-isysroot [$]$1SYSROOT"
$1SYSROOT_LDFLAGS="-isysroot [$]$1SYSROOT"
fi
fi
if test "x$OPENJDK_TARGET_OS" = xmacosx; then
# We also need -iframework<path>/System/Library/Frameworks
$1SYSROOT_CFLAGS="[$]$1SYSROOT_CFLAGS -iframework [$]$1SYSROOT/System/Library/Frameworks"
$1SYSROOT_LDFLAGS="[$]$1SYSROOT_LDFLAGS -iframework [$]$1SYSROOT/System/Library/Frameworks"
# These always need to be set, or we can't find the frameworks embedded in JavaVM.framework
# set this here so it doesn't have to be peppered throughout the forest
$1SYSROOT_CFLAGS="[$]$1SYSROOT_CFLAGS -F [$]$1SYSROOT/System/Library/Frameworks/JavaVM.framework/Frameworks"
$1SYSROOT_LDFLAGS="[$]$1SYSROOT_LDFLAGS -F [$]$1SYSROOT/System/Library/Frameworks/JavaVM.framework/Frameworks"
fi
AC_SUBST($1SYSROOT_CFLAGS)
AC_SUBST($1SYSROOT_LDFLAGS)
])
AC_DEFUN_ONCE([FLAGS_PRE_TOOLCHAIN],
[
# We should always include user supplied flags
FLAGS_SETUP_USER_SUPPLIED_FLAGS
# The sysroot flags are needed for configure to be able to run the compilers
FLAGS_SETUP_SYSROOT_FLAGS
# For solstudio and xlc, the word size flag is required for correct behavior.
# For clang/gcc, the flag is only strictly required for reduced builds, but
# set it always where possible (x86, sparc and ppc).
if test "x$TOOLCHAIN_TYPE" = xxlc; then
MACHINE_FLAG="-q${OPENJDK_TARGET_CPU_BITS}"
elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
MACHINE_FLAG="-m${OPENJDK_TARGET_CPU_BITS}"
elif test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then
if test "x$OPENJDK_TARGET_CPU_ARCH" = xx86 ||
test "x$OPENJDK_TARGET_CPU_ARCH" = xsparc ||
test "x$OPENJDK_TARGET_CPU_ARCH" = xppc; then
MACHINE_FLAG="-m${OPENJDK_TARGET_CPU_BITS}"
fi
fi
# FIXME: global flags are not used yet...
# The "global" flags will *always* be set. Without them, it is not possible to
# get a working compilation.
GLOBAL_CFLAGS="$MACHINE_FLAG $SYSROOT_CFLAGS $USER_CFLAGS"
GLOBAL_CXXFLAGS="$MACHINE_FLAG $SYSROOT_CFLAGS $USER_CXXFLAGS"
GLOBAL_LDFLAGS="$MACHINE_FLAG $SYSROOT_LDFLAGS $USER_LDFLAGS"
# FIXME: Don't really know how to do with this, but this was the old behavior
GLOBAL_CPPFLAGS="$SYSROOT_CFLAGS"
AC_SUBST(GLOBAL_CFLAGS)
AC_SUBST(GLOBAL_CXXFLAGS)
AC_SUBST(GLOBAL_LDFLAGS)
AC_SUBST(GLOBAL_CPPFLAGS)
# FIXME: For compatilibity, export this as EXTRA_CFLAGS for now.
EXTRA_CFLAGS="$MACHINE_FLAG $USER_CFLAGS"
EXTRA_CXXFLAGS="$MACHINE_FLAG $USER_CXXFLAGS"
EXTRA_LDFLAGS="$MACHINE_FLAG $USER_LDFLAGS"
AC_SUBST(EXTRA_CFLAGS)
AC_SUBST(EXTRA_CXXFLAGS)
AC_SUBST(EXTRA_LDFLAGS)
# For autoconf testing to work, the global flags must also be stored in the
# "unnamed" CFLAGS etc.
CFLAGS="$GLOBAL_CFLAGS"
CXXFLAGS="$GLOBAL_CXXFLAGS"
LDFLAGS="$GLOBAL_LDFLAGS"
CPPFLAGS="$GLOBAL_CPPFLAGS"
])
AC_DEFUN([FLAGS_SETUP_TOOLCHAIN_CONTROL],
[
# COMPILER_TARGET_BITS_FLAG : option for selecting 32- or 64-bit output
# COMPILER_COMMAND_FILE_FLAG : option for passing a command file to the compiler
# COMPILER_BINDCMD_FILE_FLAG : option for specifying a file which saves the binder
# commands produced by the link step (currently AIX only)
if test "x$TOOLCHAIN_TYPE" = xxlc; then
COMPILER_TARGET_BITS_FLAG="-q"
COMPILER_COMMAND_FILE_FLAG="-f"
COMPILER_BINDCMD_FILE_FLAG="-bloadmap:"
else
COMPILER_TARGET_BITS_FLAG="-m"
COMPILER_COMMAND_FILE_FLAG="@"
COMPILER_BINDCMD_FILE_FLAG=""
# The solstudio linker does not support @-files.
if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
COMPILER_COMMAND_FILE_FLAG=
fi
# Check if @file is supported by gcc
if test "x$TOOLCHAIN_TYPE" = xgcc; then
AC_MSG_CHECKING([if @file is supported by gcc])
# Extra emtpy "" to prevent ECHO from interpreting '--version' as argument
$ECHO "" "--version" > command.file
if $CXX @command.file 2>&AS_MESSAGE_LOG_FD >&AS_MESSAGE_LOG_FD; then
AC_MSG_RESULT(yes)
COMPILER_COMMAND_FILE_FLAG="@"
else
AC_MSG_RESULT(no)
COMPILER_COMMAND_FILE_FLAG=
fi
$RM command.file
fi
fi
AC_SUBST(COMPILER_TARGET_BITS_FLAG)
AC_SUBST(COMPILER_COMMAND_FILE_FLAG)
AC_SUBST(COMPILER_BINDCMD_FILE_FLAG)
# Check that the compiler supports -mX (or -qX on AIX) flags
# Set COMPILER_SUPPORTS_TARGET_BITS_FLAG to 'true' if it does
FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${COMPILER_TARGET_BITS_FLAG}${OPENJDK_TARGET_CPU_BITS}],
IF_TRUE: [COMPILER_SUPPORTS_TARGET_BITS_FLAG=true],
IF_FALSE: [COMPILER_SUPPORTS_TARGET_BITS_FLAG=false])
AC_SUBST(COMPILER_SUPPORTS_TARGET_BITS_FLAG)
if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
CC_OUT_OPTION=-Fo
LD_OUT_OPTION=-out:
AR_OUT_OPTION=-out:
else
# The option used to specify the target .o,.a or .so file.
# When compiling, how to specify the to be created object file.
CC_OUT_OPTION='-o$(SPACE)'
# When linking, how to specify the output
LD_OUT_OPTION='-o$(SPACE)'
# When archiving, how to specify the to be create static archive for object files.
AR_OUT_OPTION='rcs$(SPACE)'
fi
AC_SUBST(CC_OUT_OPTION)
AC_SUBST(LD_OUT_OPTION)
AC_SUBST(AR_OUT_OPTION)
# Generate make dependency files
if test "x$TOOLCHAIN_TYPE" = xgcc; then
C_FLAG_DEPS="-MMD -MF"
elif test "x$TOOLCHAIN_TYPE" = xclang; then
C_FLAG_DEPS="-MMD -MF"
elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
C_FLAG_DEPS="-xMMD -xMF"
elif test "x$TOOLCHAIN_TYPE" = xxlc; then
C_FLAG_DEPS="-qmakedep=gcc -MF"
fi
CXX_FLAG_DEPS="$C_FLAG_DEPS"
AC_SUBST(C_FLAG_DEPS)
AC_SUBST(CXX_FLAG_DEPS)
])
AC_DEFUN_ONCE([FLAGS_POST_TOOLCHAIN],
[
FLAGS_SETUP_TOOLCHAIN_CONTROL
if test "x$BUILD_SYSROOT" != x; then
FLAGS_SETUP_SYSROOT_FLAGS([BUILD_])
else
if test "x$COMPILE_TYPE" != "xcross"; then
BUILD_SYSROOT_CFLAGS="$SYSROOT_CFLAGS"
BUILD_SYSROOT_LDFLAGS="$SYSROOT_LDFLAGS"
fi
fi
AC_SUBST(BUILD_SYSROOT_CFLAGS)
AC_SUBST(BUILD_SYSROOT_LDFLAGS)
])
AC_DEFUN([FLAGS_SETUP_FLAGS],
[
FLAGS_SETUP_MACOSX_VERSION
FLAGS_SETUP_ABI_PROFILE
FLAGS_SETUP_SHARED_LIBS
FLAGS_SETUP_DEBUG_SYMBOLS
FLAGS_SETUP_WARNINGS
FLAGS_SETUP_QUALITY_CHECKS
FLAGS_SETUP_OPTIMIZATION
FLAGS_SETUP_CFLAGS
FLAGS_SETUP_LDFLAGS
FLAGS_SETUP_ARFLAGS
FLAGS_SETUP_STRIPFLAGS
FLAGS_SETUP_RCFLAGS
FLAGS_SETUP_ASFLAGS
FLAGS_SETUP_ASFLAGS_CPU_DEP([TARGET])
FLAGS_SETUP_ASFLAGS_CPU_DEP([BUILD], [OPENJDK_BUILD_])
])
# FLAGS_C_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [ARGUMENT], IF_TRUE: [RUN-IF-TRUE],
# IF_FALSE: [RUN-IF-FALSE])
# ------------------------------------------------------------
# Check that the C compiler supports an argument
BASIC_DEFUN_NAMED([FLAGS_C_COMPILER_CHECK_ARGUMENTS],
[*ARGUMENT IF_TRUE IF_FALSE], [$@],
[
AC_MSG_CHECKING([if the C compiler supports "ARG_ARGUMENT"])
supports=yes
saved_cflags="$CFLAGS"
CFLAGS="$CFLAGS ARG_ARGUMENT"
AC_LANG_PUSH([C])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int i;]])], [],
[supports=no])
AC_LANG_POP([C])
CFLAGS="$saved_cflags"
AC_MSG_RESULT([$supports])
if test "x$supports" = "xyes" ; then
:
ARG_IF_TRUE
else
:
ARG_IF_FALSE
fi
])
# FLAGS_CXX_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [ARGUMENT], IF_TRUE: [RUN-IF-TRUE],
# IF_FALSE: [RUN-IF-FALSE])
# ------------------------------------------------------------
# Check that the C++ compiler supports an argument
BASIC_DEFUN_NAMED([FLAGS_CXX_COMPILER_CHECK_ARGUMENTS],
[*ARGUMENT IF_TRUE IF_FALSE], [$@],
[
AC_MSG_CHECKING([if the C++ compiler supports "ARG_ARGUMENT"])
supports=yes
saved_cxxflags="$CXXFLAGS"
CXXFLAGS="$CXXFLAG ARG_ARGUMENT"
AC_LANG_PUSH([C++])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int i;]])], [],
[supports=no])
AC_LANG_POP([C++])
CXXFLAGS="$saved_cxxflags"
AC_MSG_RESULT([$supports])
if test "x$supports" = "xyes" ; then
:
ARG_IF_TRUE
else
:
ARG_IF_FALSE
fi
])
# FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [ARGUMENT], IF_TRUE: [RUN-IF-TRUE],
# IF_FALSE: [RUN-IF-FALSE])
# ------------------------------------------------------------
# Check that the C and C++ compilers support an argument
BASIC_DEFUN_NAMED([FLAGS_COMPILER_CHECK_ARGUMENTS],
[*ARGUMENT IF_TRUE IF_FALSE], [$@],
[
FLAGS_C_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [ARG_ARGUMENT],
IF_TRUE: [C_COMP_SUPPORTS="yes"],
IF_FALSE: [C_COMP_SUPPORTS="no"])
FLAGS_CXX_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [ARG_ARGUMENT],
IF_TRUE: [CXX_COMP_SUPPORTS="yes"],
IF_FALSE: [CXX_COMP_SUPPORTS="no"])
AC_MSG_CHECKING([if both compilers support "ARG_ARGUMENT"])
supports=no
if test "x$C_COMP_SUPPORTS" = "xyes" -a "x$CXX_COMP_SUPPORTS" = "xyes"; then supports=yes; fi
AC_MSG_RESULT([$supports])
if test "x$supports" = "xyes" ; then
:
ARG_IF_TRUE
else
:
ARG_IF_FALSE
fi
])
# FLAGS_LINKER_CHECK_ARGUMENTS(ARGUMENT: [ARGUMENT], IF_TRUE: [RUN-IF-TRUE],
# IF_FALSE: [RUN-IF-FALSE])
# ------------------------------------------------------------
# Check that the linker support an argument
BASIC_DEFUN_NAMED([FLAGS_LINKER_CHECK_ARGUMENTS],
[*ARGUMENT IF_TRUE IF_FALSE], [$@],
[
AC_MSG_CHECKING([if linker supports "ARG_ARGUMENT"])
supports=yes
saved_ldflags="$LDFLAGS"
LDFLAGS="$LDFLAGS ARG_ARGUMENT"
AC_LANG_PUSH([C])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[]])],
[], [supports=no])
AC_LANG_POP([C])
LDFLAGS="$saved_ldflags"
AC_MSG_RESULT([$supports])
if test "x$supports" = "xyes" ; then
:
ARG_IF_TRUE
else
:
ARG_IF_FALSE
fi
])