#
# 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])
# Sort the flags in a given variable, and remove superfluous whitespace.
#
# $1 = name of variable to sort
AC_DEFUN([FLAGS_SORT_FLAGS], [
$1=`$ECHO ${$1} | $TR ' ' '\n' | $SORT | $TR '\n' ' '`
])
################################################################################
#
# Setup ABI profile (for arm)
#
AC_DEFUN([FLAGS_SETUP_ABI_PROFILE],
[
AC_ARG_WITH(abi-profile, [AS_HELP_STRING([--with-abi-profile],
[specify ABI profile for ARM builds (arm-vfp-sflt,arm-vfp-hflt,arm-sflt, armv5-vfp-sflt,armv6-vfp-hflt,arm64,aarch64) @<:@toolchain dependent@:>@ ])])
if test "x$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-$OPENJDK_TARGET_ABI_PROFILE"
fi
])
# Reset the global CFLAGS/LDFLAGS variables and initialize them with the
# corresponding configure arguments instead
AC_DEFUN_ONCE([FLAGS_SETUP_USER_SUPPLIED_FLAGS],
[
if test "x$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($1SYSROOT_LDFLAGS)
])
AC_DEFUN_ONCE([FLAGS_SETUP_GLOBAL_FLAGS],
[
if test "x$TOOLCHAIN_TYPE" = xxlc; then
MACHINE_FLAG="-q${OPENJDK_TARGET_CPU_BITS}"
elif test "x$TOOLCHAIN_TYPE" != xmicrosoft; then
MACHINE_FLAG="-m${OPENJDK_TARGET_CPU_BITS}"
fi
# FIXME: global flags are not used yet...
# The "global" flags will *always* be set. Without them, it is not possible to
# get a working compilation.
GLOBAL_CFLAGS="$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="$GLOBAL_CPPFLAGS"
])
AC_DEFUN_ONCE([FLAGS_SETUP_INIT_FLAGS],
[
FLAGS_SETUP_TOOLCHAIN_CONTROL
FLAGS_SETUP_ARFLAGS
FLAGS_SETUP_STRIPFLAGS
FLAGS_SETUP_RCFLAGS
if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
# silence copyright notice and other headers.
COMMON_CCXXFLAGS="$COMMON_CCXXFLAGS -nologo"
fi
if test "x$BUILD_SYSROOT" != x; then
FLAGS_SETUP_SYSROOT_FLAGS([BUILD_])
else
BUILD_SYSROOT_CFLAGS="$SYSROOT_CFLAGS"
BUILD_SYSROOT_LDFLAGS="$SYSROOT_LDFLAGS"
fi
AC_SUBST(BUILD_SYSROOT_CFLAGS)
AC_SUBST(BUILD_SYSROOT_LDFLAGS)
])
AC_DEFUN([FLAGS_SETUP_COMPILER_FLAGS_FOR_LIBS],
[
FLAGS_SETUP_SHARED_LIBS
# The (cross) compiler is now configured, we can now test capabilities
# of the target platform.
])
# Documentation on common flags used for solstudio in HIGHEST.
#
# WARNING: Use of OPTIMIZATION_LEVEL=HIGHEST in your Makefile needs to be
# done with care, there are some assumptions below that need to
# be understood about the use of pointers, and IEEE behavior.
#
# -fns: Use non-standard floating point mode (not IEEE 754)
# -fsimple: Do some simplification of floating point arithmetic (not IEEE 754)
# -fsingle: Use single precision floating point with 'float'
# -xalias_level=basic: Assume memory references via basic pointer types do not alias
# (Source with excessing pointer casting and data access with mixed
# pointer types are not recommended)
# -xbuiltin=%all: Use intrinsic or inline versions for math/std functions
# (If you expect perfect errno behavior, do not use this)
# -xdepend: Loop data dependency optimizations (need -xO3 or higher)
# -xrestrict: Pointer parameters to functions do not overlap
# (Similar to -xalias_level=basic usage, but less obvious sometimes.
# If you pass in multiple pointers to the same data, do not use this)
# -xlibmil: Inline some library routines
# (If you expect perfect errno behavior, do not use this)
# -xlibmopt: Use optimized math routines (CURRENTLY DISABLED)
# (If you expect perfect errno behavior, do not use this)
# Can cause undefined external on Solaris 8 X86 on __sincos, removing for now
AC_DEFUN_ONCE([FLAGS_SETUP_COMPILER_FLAGS_FOR_OPTIMIZATION],
[
FLAGS_SETUP_DEBUG_SYMBOLS
FLAGS_SETUP_QUALITY_CHECKS
FLAGS_SETUP_OPTIMIZATION
# Debug symbols for JVM_CFLAGS
if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
JVM_CFLAGS_SYMBOLS="$JVM_CFLAGS_SYMBOLS -xs"
if test "x$DEBUG_LEVEL" = xslowdebug; then
JVM_CFLAGS_SYMBOLS="$JVM_CFLAGS_SYMBOLS -g"
else
# -g0 does not disable inlining, which -g does.
JVM_CFLAGS_SYMBOLS="$JVM_CFLAGS_SYMBOLS -g0"
fi
elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
JVM_CFLAGS_SYMBOLS="$JVM_CFLAGS_SYMBOLS -Z7 -d2Zi+"
else
JVM_CFLAGS_SYMBOLS="$JVM_CFLAGS_SYMBOLS -g"
fi
AC_SUBST(JVM_CFLAGS_SYMBOLS)
# bounds, memory and behavior checking options
if test "x$TOOLCHAIN_TYPE" = xgcc; then
case $DEBUG_LEVEL in
slowdebug )
# FIXME: By adding this to C(XX)FLAGS_DEBUG_OPTIONS/JVM_CFLAGS_SYMBOLS it
# get's added conditionally on whether we produce debug symbols or not.
# This is most likely not really correct.
if test "x$STACK_PROTECTOR_CFLAG" != x; then
JVM_CFLAGS_SYMBOLS="$JVM_CFLAGS_SYMBOLS $STACK_PROTECTOR_CFLAG --param ssp-buffer-size=1"
fi
;;
esac
fi
if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
if test "x$DEBUG_LEVEL" != xrelease; then
if test "x$OPENJDK_TARGET_CPU" = xx86_64; then
JVM_CFLAGS="$JVM_CFLAGS -homeparams"
fi
fi
fi
])
AC_DEFUN([FLAGS_SETUP_COMPILER_FLAGS_FOR_JDK],
[
# Additional macosx handling
if test "x$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=10.7.0
MACOSX_VERSION_MIN_NODOTS=1070
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$with_macosx_version_max" = "xno"; then
# Use build system default
MACOSX_VERSION_MAX=
else
AC_MSG_ERROR([osx version format must be nn.n.n or nn.nn.nn])
fi
],
[MACOSX_VERSION_MAX=]
)
MACOSX_VERSION_MAX_NODOTS=`$ECHO $MACOSX_VERSION_MAX | $TR -d .`
AC_SUBST(MACOSX_VERSION_MAX)
fi
FLAGS_SETUP_ABI_PROFILE
# Optional POSIX functionality needed by the JVM
#
# Check if clock_gettime is available and in which library. This indicates
# availability of CLOCK_MONOTONIC for hotspot. But we don't need to link, so
# don't let it update LIBS.
save_LIBS="$LIBS"
AC_SEARCH_LIBS(clock_gettime, rt, [HAS_CLOCK_GETTIME=true], [])
if test "x$LIBS" = "x-lrt "; then
CLOCK_GETTIME_IN_LIBRT=true
fi
LIBS="$save_LIBS"
FLAGS_SETUP_LINKER_FLAGS_FOR_JDK
### CFLAGS
FLAGS_SETUP_COMPILER_FLAGS_FOR_JDK_HELPER
FLAGS_OS=$OPENJDK_TARGET_OS
FLAGS_OS_TYPE=$OPENJDK_TARGET_OS_TYPE
FLAGS_CPU=$OPENJDK_TARGET_CPU
FLAGS_CPU_ARCH=$OPENJDK_TARGET_CPU_ARCH
FLAGS_CPU_BITS=$OPENJDK_TARGET_CPU_BITS
FLAGS_CPU_ENDIAN=$OPENJDK_TARGET_CPU_ENDIAN
FLAGS_CPU_LEGACY=$OPENJDK_TARGET_CPU_LEGACY
FLAGS_ADD_LP64=$OPENJDK_TARGET_ADD_LP64
FLAGS_SETUP_COMPILER_FLAGS_FOR_JDK_CPU_DEP([TARGET])
FLAGS_OS=$OPENJDK_BUILD_OS
FLAGS_OS_TYPE=$OPENJDK_BUILD_OS_TYPE
FLAGS_CPU=$OPENJDK_BUILD_CPU
FLAGS_CPU_ARCH=$OPENJDK_BUILD_CPU_ARCH
FLAGS_CPU_BITS=$OPENJDK_BUILD_CPU_BITS
FLAGS_CPU_ENDIAN=$OPENJDK_BUILD_CPU_ENDIAN
FLAGS_CPU_LEGACY=$OPENJDK_BUILD_CPU_LEGACY
FLAGS_ADD_LP64=$OPENJDK_BUILD_ADD_LP64
FLAGS_SETUP_COMPILER_FLAGS_FOR_JDK_CPU_DEP([BUILD], [OPENJDK_BUILD_])
# Tests are only ever compiled for TARGET
CFLAGS_TESTLIB="$CFLAGS_JDKLIB"
CXXFLAGS_TESTLIB="$CXXFLAGS_JDKLIB"
CFLAGS_TESTEXE="$CFLAGS_JDKEXE"
CXXFLAGS_TESTEXE="$CXXFLAGS_JDKEXE"
AC_SUBST(CFLAGS_TESTLIB)
AC_SUBST(CFLAGS_TESTEXE)
AC_SUBST(CXXFLAGS_TESTLIB)
AC_SUBST(CXXFLAGS_TESTEXE)
############## ARFLAGS
# Additional macosx handling
if test "x$OPENJDK_TARGET_OS" = xmacosx; then
ARFLAGS="$ARFLAGS -mmacosx-version-min=\$(MACOSX_VERSION_MIN)"
fi
############## ASFLAGS
# Set JVM_ASFLAGS
if test "x$OPENJDK_TARGET_OS" = xmacosx; then
JVM_ASFLAGS="-x assembler-with-cpp -mno-omit-leaf-frame-pointer -mstack-alignment=16"
fi
JVM_ASFLAGS="$JVM_ASFLAGS $MACHINE_FLAG"
AC_SUBST(JVM_ASFLAGS)
])
################################################################################
# platform independent
AC_DEFUN([FLAGS_SETUP_COMPILER_FLAGS_FOR_JDK_HELPER],
[
#### OS DEFINES, these should be independent on toolchain
if test "x$OPENJDK_TARGET_OS" = xlinux; then
CFLAGS_OS_DEF_JVM="-DLINUX"
CFLAGS_OS_DEF_JDK="-D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE"
elif test "x$OPENJDK_TARGET_OS" = xsolaris; then
CFLAGS_OS_DEF_JVM="-DSOLARIS"
CFLAGS_OS_DEF_JDK="-D__solaris__"
elif test "x$OPENJDK_TARGET_OS" = xmacosx; then
CFLAGS_OS_DEF_JVM="-D_ALLBSD_SOURCE -D_DARWIN_C_SOURCE -D_XOPEN_SOURCE"
CFLAGS_OS_DEF_JDK="-D_ALLBSD_SOURCE -D_DARWIN_UNLIMITED_SELECT"
elif test "x$OPENJDK_TARGET_OS" = xaix; then
CFLAGS_OS_DEF_JVM="-DAIX"
elif test "x$OPENJDK_TARGET_OS" = xbsd; then
CFLAGS_OS_DEF_JDK="-D_ALLBSD_SOURCE"
elif test "x$OPENJDK_TARGET_OS" = xwindows; then
CFLAGS_OS_DEF_JVM="-D_WINDOWS -DWIN32 -D_JNI_IMPLEMENTATION_"
fi
# Setup target OS define. Use OS target name but in upper case.
OPENJDK_TARGET_OS_UPPERCASE=`$ECHO $OPENJDK_TARGET_OS | $TR 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
CFLAGS_OS_DEF_JDK="$CFLAGS_OS_DEF_JDK -D$OPENJDK_TARGET_OS_UPPERCASE"
#### GLOBAL DEFINES
# Set some common defines. These works for all compilers, but assume
# -D is universally accepted.
# Always enable optional macros for VM.
ALWAYS_CFLAGS_JVM="-D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS"
# Setup some hard coded includes
ALWAYS_CFLAGS_JDK=" \
-I\$(SUPPORT_OUTPUTDIR)/modules_include/java.base \
-I\$(SUPPORT_OUTPUTDIR)/modules_include/java.base/\$(OPENJDK_TARGET_OS_INCLUDE_SUBDIR) \
-I${TOPDIR}/src/java.base/share/native/libjava \
-I${TOPDIR}/src/java.base/$OPENJDK_TARGET_OS_TYPE/native/libjava \
-I${TOPDIR}/src/hotspot/share/include \
-I${TOPDIR}/src/hotspot/os/${HOTSPOT_TARGET_OS_TYPE}/include"
###############################################################################
# Adjust flags according to debug level.
# Setup debug/release defines
if test "x$DEBUG_LEVEL" = xrelease; then
DEBUG_CFLAGS_JDK="-DNDEBUG"
if test "x$OPENJDK_TARGET_OS" = xsolaris; then
DEBUG_CFLAGS_JDK="$DEBUG_CFLAGS_JDK -DTRIMMED"
fi
else
DEBUG_CFLAGS_JDK="-DDEBUG"
if test "x$TOOLCHAIN_TYPE" = xxlc; then
# We need '-qminimaltoc' or '-qpic=large -bbigtoc' if the TOC overflows.
# Hotspot now overflows its 64K TOC (currently only for debug),
# so for debug we build with '-qpic=large -bbigtoc'.
DEBUG_CFLAGS_JVM="-qpic=large"
fi
fi
if test "x$DEBUG_LEVEL" != xrelease; then
DEBUG_SYMBOLS_CFLAGS_JDK="$CFLAGS_DEBUG_SYMBOLS $CFLAGS_DEBUG_OPTIONS"
fi
#### TOOLCHAIN DEFINES
if test "x$TOOLCHAIN_TYPE" = xgcc; then
ALWAYS_DEFINES_JVM="-D_GNU_SOURCE -D_REENTRANT"
elif test "x$TOOLCHAIN_TYPE" = xclang; then
ALWAYS_DEFINES_JVM="-D_GNU_SOURCE"
elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
ALWAYS_DEFINES_JVM="-DSPARC_WORKS -D_Crun_inline_placement"
ALWAYS_DEFINES_JDK="-DTRACING -DMACRO_MEMSYS_OPS -DBREAKPTS"
ALWAYS_DEFINES_JDK_CXXONLY="-DCC_NOEX"
elif test "x$TOOLCHAIN_TYPE" = xxlc; then
ALWAYS_DEFINES_JVM="-D_REENTRANT"
ALWAYS_DEFINES_JDK="-D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE -DSTDC"
elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
ALWAYS_DEFINES_JDK="-DWIN32_LEAN_AND_MEAN -D_CRT_SECURE_NO_DEPRECATE \
-D_CRT_NONSTDC_NO_DEPRECATE -DWIN32 -DIAL"
fi
###############################################################################
#
#
# CFLAGS BASIC
if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then
# COMMON to gcc and clang
TOOLCHAIN_CFLAGS_JVM="-pipe -fno-rtti -fno-exceptions \
-fvisibility=hidden -fno-strict-aliasing -fno-omit-frame-pointer"
fi
if test "x$TOOLCHAIN_TYPE" = xgcc; then
TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -fcheck-new"
TOOLCHAIN_CFLAGS_JDK="-pipe"
TOOLCHAIN_CFLAGS_JDK_CONLY="-fno-strict-aliasing" # technically NOT for CXX (but since this gives *worse* performance, use no-strict-aliasing everywhere!)
CXXSTD_CXXFLAG="-std=gnu++98"
FLAGS_CXX_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$CXXSTD_CXXFLAG -Werror],
IF_FALSE: [CXXSTD_CXXFLAG=""])
TOOLCHAIN_CFLAGS_JDK_CXXONLY="$CXXSTD_CXXFLAG"
TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM $CXXSTD_CXXFLAG"
ADLC_CXXFLAG="$CXXSTD_CXXFLAG"
elif test "x$TOOLCHAIN_TYPE" = xclang; then
# Restrict the debug information created by Clang to avoid
# too big object files and speed the build up a little bit
# (see http://llvm.org/bugs/show_bug.cgi?id=7554)
TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -flimit-debug-info"
if test "x$OPENJDK_TARGET_OS" = xlinux; then
TOOLCHAIN_CFLAGS_JDK="-pipe"
TOOLCHAIN_CFLAGS_JDK_CONLY="-fno-strict-aliasing" # technically NOT for CXX
fi
elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
TOOLCHAIN_CFLAGS_JDK="mt"
TOOLCHAIN_CFLAGS_JDK_CONLY="-xc99=%none -xCC -Xa -v -W0,-noglobal" # C only
TOOLCHAIN_CFLAGS_JDK_CXXONLY="-features=no%except -norunpath -xnolib" # CXX only
TOOLCHAIN_CFLAGS_JVM="-template=no%extdef -features=no%split_init \
-library=stlport4 -mt -features=no%except"
elif test "x$TOOLCHAIN_TYPE" = xxlc; then
TOOLCHAIN_CFLAGS_JDK="-qchars=signed -qfullpath -qsaveopt" # add on both CFLAGS
TOOLCHAIN_CFLAGS_JVM="-qtune=balanced \
-qalias=noansi -qstrict -qtls=default -qlanglvl=c99vla \
-qlanglvl=noredefmac -qnortti -qnoeh -qignerrno"
elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
TOOLCHAIN_CFLAGS_JVM="-nologo -MD -MP"
TOOLCHAIN_CFLAGS_JDK="-MD -Zc:wchar_t-"
fi
# CFLAGS WARNINGS STUFF
# Set JVM_CFLAGS warning handling
if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then
# COMMON to gcc and clang
WARNING_CFLAGS_JVM="-Wpointer-arith -Wsign-compare -Wunused-function"
if ! HOTSPOT_CHECK_JVM_VARIANT(zero); then
# Non-zero builds have stricter warnings
WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wundef -Wformat=2"
fi
fi
if test "x$TOOLCHAIN_TYPE" = xgcc; then
WARNING_CFLAGS_JDK="-Wall -Wextra -Wno-unused -Wno-unused-parameter -Wformat=2"
WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wunused-value -Woverloaded-virtual"
if ! HOTSPOT_CHECK_JVM_VARIANT(zero); then
# Non-zero builds have stricter warnings
WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wreturn-type"
fi
elif test "x$TOOLCHAIN_TYPE" = xclang; then
WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wno-deprecated"
if test "x$OPENJDK_TARGET_OS" = xlinux; then
WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wno-sometimes-uninitialized"
WARNING_CFLAGS_JDK="-Wall -Wextra -Wno-unused -Wno-unused-parameter -Wformat=2"
fi
elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
WARNING_CFLAGS_JDK_CONLY="-errshort=tags"
WARNING_CFLAGS_JDK_CXXONLY="+w"
WARNING_CFLAGS_JDK="-errtags=yes -errfmt"
elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
WARNING_CFLAGS="-W3"
WARNING_CFLAGS_JDK="-wd4800"
fi
# Set some additional per-OS defines.
# Additional macosx handling
if test "x$OPENJDK_TARGET_OS" = xmacosx; then
OS_CFLAGS="-DMAC_OS_X_VERSION_MIN_REQUIRED=$MACOSX_VERSION_MIN_NODOTS \
-mmacosx-version-min=$MACOSX_VERSION_MIN"
if test -n "$MACOSX_VERSION_MAX"; then
OS_CFLAGS="$OS_CFLAGS \
-DMAC_OS_X_VERSION_MAX_ALLOWED=$MACOSX_VERSION_MAX_NODOTS"
fi
fi
# Where does this really belong??
if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then
PICFLAG="-fPIC"
elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
PICFLAG="-KPIC"
elif test "x$TOOLCHAIN_TYPE" = xxlc; then
# '-qpic' defaults to 'qpic=small'. This means that the compiler generates only
# one instruction for accessing the TOC. If the TOC grows larger than 64K, the linker
# will have to patch this single instruction with a call to some out-of-order code which
# does the load from the TOC. This is of course slow. But in that case we also would have
# to use '-bbigtoc' for linking anyway so we could also change the PICFLAG to 'qpic=large'.
# With 'qpic=large' the compiler will by default generate a two-instruction sequence which
# can be patched directly by the linker and does not require a jump to out-of-order code.
# Another alternative instead of using 'qpic=large -bbigtoc' may be to use '-qminimaltoc'
# instead. This creates a distinct TOC for every compilation unit (and thus requires two
# loads for accessing a global variable). But there are rumors that this may be seen as a
# 'performance feature' because of improved code locality of the symbols used in a
# compilation unit.
PICFLAG="-qpic"
elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
PICFLAG=""
fi
JVM_PICFLAG="$PICFLAG"
JDK_PICFLAG="$PICFLAG"
if test "x$OPENJDK_TARGET_OS" = xmacosx; then
# Linking is different on MacOSX
JDK_PICFLAG=''
if test "x$STATIC_BUILD" = xtrue; then
JVM_PICFLAG=""
fi
fi
if test "x$OPENJDK_TARGET_OS" = xmacosx; then
OS_CFLAGS_JVM="$OS_CFLAGS_JVM -mno-omit-leaf-frame-pointer -mstack-alignment=16"
fi
# Optional POSIX functionality needed by the VM
if test "x$HAS_CLOCK_GETTIME" = "xtrue"; then
OS_CFLAGS_JVM="$OS_CFLAGS_JVM -DSUPPORTS_CLOCK_MONOTONIC"
if test "x$CLOCK_GETTIME_IN_LIBRT" = "xtrue"; then
OS_CFLAGS_JVM="$OS_CFLAGS_JVM -DNEEDS_LIBRT"
fi
fi
# EXPORT
AC_SUBST(ADLC_CXXFLAG)
])
################################################################################
# $1 - Either BUILD or TARGET to pick the correct OS/CPU variables to check
# conditionals against.
# $2 - Optional prefix for each variable defined.
AC_DEFUN([FLAGS_SETUP_COMPILER_FLAGS_FOR_JDK_CPU_DEP],
[
#### CPU DEFINES, these should be independent on toolchain
# Setup target CPU
# Setup endianness
# The macros _LITTLE/BIG_ENDIAN needs to be defined with = to avoid
# sunstudio warning message: warning: macro redefined: _LITTLE_ENDIAN
if test "x$FLAGS_CPU_ENDIAN" = xlittle; then
$1_DEFINES_CPU_JVM="-DVM_LITTLE_ENDIAN"
$1_DEFINES_CPU_JDK="-D_LITTLE_ENDIAN="
else
$1_DEFINES_CPU_JDK="-D_BIG_ENDIAN="
fi
# setup CPU bit size
$1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -DARCH='\"$FLAGS_CPU_LEGACY\"' \
-D$FLAGS_CPU_LEGACY"
if test "x$FLAGS_CPU_BITS" = x64; then
# -D_LP64=1 is only set on linux and mac. Setting on windows causes diff in
# unpack200.exe.
if test "x$FLAGS_OS" = xlinux || test "x$FLAGS_OS" = xmacosx; then
$1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_LP64=1"
fi
if test "x$FLAGS_OS" != xsolaris && test "x$FLAGS_OS" != xaix; then
# Solaris does not have _LP64=1 in the old build.
# xlc on AIX defines _LP64=1 by default and issues a warning if we redefine it.
$1_DEFINES_CPU_JVM="${$1_DEFINES_CPU_JVM} -D_LP64=1"
fi
fi
# toolchain dependend, per-cpu
if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
if test "x$FLAGS_CPU_ARCH" = xx86; then
$1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -DcpuIntel -Di586 -D$FLAGS_CPU_LEGACY_LIB"
fi
elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
if test "x$FLAGS_CPU" = xx86_64; then
$1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_AMD64_ -Damd64"
else
$1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_X86_ -Dx86"
fi
fi
# CFLAGS PER CPU
if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then
# COMMON to gcc and clang
if test "x$FLAGS_CPU" = xx86; then
# Force compatibility with i586 on 32 bit intel platforms.
$1_CFLAGS_CPU="-march=i586"
fi
fi
if test "x$TOOLCHAIN_TYPE" = xgcc; then
if test "x$FLAGS_CPU" = xarm; then
# -Wno-psabi to get rid of annoying "note: the mangling of 'va_list' has changed in GCC 4.4"
$1_CFLAGS_CPU="-fsigned-char -Wno-psabi $ARM_ARCH_TYPE_FLAGS $ARM_FLOAT_TYPE_FLAGS -DJDK_ARCH_ABI_PROP_NAME='\"\$(JDK_ARCH_ABI_PROP_NAME)\"'"
$1_CFLAGS_CPU_JVM="-DARM"
elif test "x$FLAGS_CPU" = xaarch64; then
if test "x$HOTSPOT_TARGET_CPU_PORT" = xarm64; then
$1_CFLAGS_CPU_JVM="-fsigned-char -DARM"
fi
elif test "x$FLAGS_CPU_ARCH" = xppc; then
$1_CFLAGS_CPU_JVM="-minsert-sched-nops=regroup_exact -mno-multiple -mno-string"
if test "x$FLAGS_CPU" = xppc64; then
# -mminimal-toc fixes `relocation truncated to fit' error for gcc 4.1.
# Use ppc64 instructions, but schedule for power5
$1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -mminimal-toc -mcpu=powerpc64 -mtune=power5"
elif test "x$FLAGS_CPU" = xppc64le; then
# Little endian machine uses ELFv2 ABI.
# Use Power8, this is the first CPU to support PPC64 LE with ELFv2 ABI.
$1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -DABI_ELFv2 -mcpu=power8 -mtune=power8"
fi
elif test "x$FLAGS_CPU" = xs390x; then
$1_CFLAGS_CPU="-mbackchain -march=z10"
fi
if test "x$FLAGS_CPU_ARCH" != xarm && test "x$FLAGS_CPU_ARCH" != xppc; then
# for all archs except arm and ppc, prevent gcc to omit frame pointer
$1_CFLAGS_CPU_JDK="${$1_CFLAGS_CPU_JDK} -fno-omit-frame-pointer"
fi
elif test "x$TOOLCHAIN_TYPE" = xclang; then
if test "x$FLAGS_OS" = xlinux; then
# ppc test not really needed for clang
if test "x$FLAGS_CPU_ARCH" != xarm && test "x$FLAGS_CPU_ARCH" != xppc; then
# for all archs except arm and ppc, prevent gcc to omit frame pointer
$1_CFLAGS_CPU_JDK="${$1_CFLAGS_CPU_JDK} -fno-omit-frame-pointer"
fi
fi
elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
if test "x$FLAGS_CPU" = xx86_64; then
# NOTE: -xregs=no%frameptr is supposed to be default on x64
$1_CFLAGS_CPU_JDK="-xregs=no%frameptr"
elif test "x$FLAGS_CPU" = xsparcv9; then
$1_CFLAGS_CPU_JVM="-xarch=sparc"
$1_CFLAGS_CPU_JDK="-xregs=no%appl"
fi
elif test "x$TOOLCHAIN_TYPE" = xxlc; then
if test "x$FLAGS_CPU" = xppc64; then
$1_CFLAGS_CPU_JVM="-qarch=ppc64"
fi
elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
if test "x$FLAGS_CPU" = xx86; then
$1_CFLAGS_CPU_JVM="-arch:IA32"
fi
fi
if test "x$TOOLCHAIN_TYPE" = xgcc; then
TOOLCHAIN_CHECK_COMPILER_VERSION(VERSION: 6, PREFIX: $2, IF_AT_LEAST: FLAGS_SETUP_GCC6_COMPILER_FLAGS($1))
$1_TOOLCHAIN_CFLAGS="${$1_GCC6_CFLAGS}"
TOOLCHAIN_CHECK_COMPILER_VERSION(VERSION: [4.8], PREFIX: $2,
IF_AT_LEAST: [
# These flags either do not work or give spurious warnings prior to gcc 4.8.
$1_WARNING_CFLAGS_JVM="-Wno-format-zero-length -Wtype-limits -Wuninitialized"
]
)
fi
# EXPORT to API
CFLAGS_JVM_COMMON="$ALWAYS_CFLAGS_JVM $ALWAYS_DEFINES_JVM $TOOLCHAIN_CFLAGS_JVM \
$OS_CFLAGS $OS_CFLAGS_JVM $CFLAGS_OS_DEF_JVM $DEBUG_CFLAGS_JVM \
$WARNING_CFLAGS $WARNING_CFLAGS_JVM $JVM_PICFLAG"
CFLAGS_JDK_COMMON="$ALWAYS_CFLAGS_JDK $ALWAYS_DEFINES_JDK $TOOLCHAIN_CFLAGS_JDK \
$OS_CFLAGS $CFLAGS_OS_DEF_JDK $DEBUG_CFLAGS_JDK $DEBUG_SYMBOLS_CFLAGS_JDK \
$WARNING_CFLAGS $WARNING_CFLAGS_JDK $EXTRA_CXXFLAGS"
CFLAGS_JDK_COMMON_CONLY="$TOOLCHAIN_CFLAGS_JDK_CONLY $WARNING_CFLAGS_JDK_CONLY $EXTRA_CFLAGS"
CFLAGS_JDK_COMMON_CXXONLY="$ALWAYS_DEFINES_JDK_CXXONLY $TOOLCHAIN_CFLAGS_JDK_CXXONLY \
$WARNING_CFLAGS_JDK_CXXONLY $EXTRA_CXXFLAGS"
$1_CFLAGS_JVM="${$1_DEFINES_CPU_JVM} ${$1_CFLAGS_CPU} ${$1_CFLAGS_CPU_JVM} ${$1_TOOLCHAIN_CFLAGS} ${$1_WARNING_CFLAGS_JVM}"
$1_CFLAGS_JDK="${$1_DEFINES_CPU_JDK} ${$1_CFLAGS_CPU} ${$1_CFLAGS_CPU_JDK} ${$1_TOOLCHAIN_CFLAGS}"
$2JVM_CFLAGS="$CFLAGS_JVM_COMMON ${$1_CFLAGS_JVM}"
$2CFLAGS_JDKEXE="$CFLAGS_JDK_COMMON $CFLAGS_JDK_COMMON_CONLY ${$1_CFLAGS_JDK}"
$2CXXFLAGS_JDKEXE="$CFLAGS_JDK_COMMON $CFLAGS_JDK_COMMON_CXXONLY ${$1_CFLAGS_JDK}"
$2CFLAGS_JDKLIB="${$2CFLAGS_JDKEXE} $JDK_PICFLAG"
$2CXXFLAGS_JDKLIB="${$2CXXFLAGS_JDKEXE} $JDK_PICFLAG"
AC_SUBST($2JVM_CFLAGS)
AC_SUBST($2CFLAGS_JDKLIB)
AC_SUBST($2CFLAGS_JDKEXE)
AC_SUBST($2CXXFLAGS_JDKLIB)
AC_SUBST($2CXXFLAGS_JDKEXE)
])
# FLAGS_C_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [ARGUMENT], IF_TRUE: [RUN-IF-TRUE],
# IF_FALSE: [RUN-IF-FALSE])
# ------------------------------------------------------------
# Check that the C compiler supports an argument
BASIC_DEFUN_NAMED([FLAGS_C_COMPILER_CHECK_ARGUMENTS],
[*ARGUMENT IF_TRUE IF_FALSE], [$@],
[
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
])
AC_DEFUN_ONCE([FLAGS_SETUP_COMPILER_FLAGS_MISC],
[
# 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)
AC_ARG_ENABLE([warnings-as-errors], [AS_HELP_STRING([--disable-warnings-as-errors],
[do not consider native warnings to be an error @<:@enabled@:>@])])
AC_MSG_CHECKING([if native warnings are errors])
if test "x$enable_warnings_as_errors" = "xyes"; then
AC_MSG_RESULT([yes (explicitly set)])
WARNINGS_AS_ERRORS=true
elif test "x$enable_warnings_as_errors" = "xno"; then
AC_MSG_RESULT([no])
WARNINGS_AS_ERRORS=false
elif test "x$enable_warnings_as_errors" = "x"; then
AC_MSG_RESULT([yes (default)])
WARNINGS_AS_ERRORS=true
else
AC_MSG_ERROR([--enable-warnings-as-errors accepts no argument])
fi
AC_SUBST(WARNINGS_AS_ERRORS)
case "${TOOLCHAIN_TYPE}" in
microsoft)
DISABLE_WARNING_PREFIX="-wd"
CFLAGS_WARNINGS_ARE_ERRORS="-WX"
;;
solstudio)
DISABLE_WARNING_PREFIX="-erroff="
CFLAGS_WARNINGS_ARE_ERRORS="-errtags -errwarn=%all"
;;
gcc)
# Prior to gcc 4.4, a -Wno-X where X is unknown for that version of gcc will cause an error
FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [-Wno-this-is-a-warning-that-do-not-exist],
IF_TRUE: [GCC_CAN_DISABLE_WARNINGS=true],
IF_FALSE: [GCC_CAN_DISABLE_WARNINGS=false]
)
if test "x$GCC_CAN_DISABLE_WARNINGS" = "xtrue"; then
DISABLE_WARNING_PREFIX="-Wno-"
else
DISABLE_WARNING_PREFIX=
fi
CFLAGS_WARNINGS_ARE_ERRORS="-Werror"
# Repeate the check for the BUILD_CC and BUILD_CXX. Need to also reset
# CFLAGS since any target specific flags will likely not work with the
# build compiler
CC_OLD="$CC"
CXX_OLD="$CXX"
CC="$BUILD_CC"
CXX="$BUILD_CXX"
CFLAGS_OLD="$CFLAGS"
CFLAGS=""
FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [-Wno-this-is-a-warning-that-do-not-exist],
IF_TRUE: [BUILD_CC_CAN_DISABLE_WARNINGS=true],
IF_FALSE: [BUILD_CC_CAN_DISABLE_WARNINGS=false]
)
if test "x$BUILD_CC_CAN_DISABLE_WARNINGS" = "xtrue"; then
BUILD_CC_DISABLE_WARNING_PREFIX="-Wno-"
else
BUILD_CC_DISABLE_WARNING_PREFIX=
fi
CC="$CC_OLD"
CXX="$CXX_OLD"
CFLAGS="$CFLAGS_OLD"
;;
clang)
DISABLE_WARNING_PREFIX="-Wno-"
CFLAGS_WARNINGS_ARE_ERRORS="-Werror"
;;
xlc)
DISABLE_WARNING_PREFIX="-qsuppress="
CFLAGS_WARNINGS_ARE_ERRORS="-qhalt=w"
;;
esac
AC_SUBST(DISABLE_WARNING_PREFIX)
AC_SUBST(BUILD_CC_DISABLE_WARNING_PREFIX)
AC_SUBST(CFLAGS_WARNINGS_ARE_ERRORS)
])
# FLAGS_SETUP_GCC6_COMPILER_FLAGS([PREFIX])
# Arguments:
# $1 - Prefix for each variable defined.
AC_DEFUN([FLAGS_SETUP_GCC6_COMPILER_FLAGS],
[
# These flags are required for GCC 6 builds as undefined behaviour in OpenJDK code
# runs afoul of the more aggressive versions of these optimisations.
# Notably, value range propagation now assumes that the this pointer of C++
# member functions is non-null.
NO_DELETE_NULL_POINTER_CHECKS_CFLAG="-fno-delete-null-pointer-checks"
dnl Argument check is disabled until FLAGS_COMPILER_CHECK_ARGUMENTS handles cross-compilation
dnl FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_DELETE_NULL_POINTER_CHECKS_CFLAG -Werror],
dnl IF_FALSE: [NO_DELETE_NULL_POINTER_CHECKS_CFLAG=""])
NO_LIFETIME_DSE_CFLAG="-fno-lifetime-dse"
dnl Argument check is disabled until FLAGS_COMPILER_CHECK_ARGUMENTS handles cross-compilation
dnl FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_LIFETIME_DSE_CFLAG -Werror],
dnl IF_FALSE: [NO_LIFETIME_DSE_CFLAG=""])
AC_MSG_NOTICE([GCC >= 6 detected; adding ${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} and ${NO_LIFETIME_DSE_CFLAG}])
$1_GCC6_CFLAGS="${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} ${NO_LIFETIME_DSE_CFLAG}"
])