jdk8-mips64-public: common/autoconf/flags.m4@ef88239d3d16 (annotated)

common/autoconf/flags.m4@ef88239d3d16 (annotated)

common/autoconf/flags.m4

Wed, 24 Jul 2019 03:18:35 +0100

author: andrew
date: Wed, 24 Jul 2019 03:18:35 +0100
changeset 2445: ef88239d3d16
parent 2424: 3a2c8d0a600d
child 2482: 5f55e79422a0
permissions: -rw-r--r--

8223219: Backport of JDK-8199552 to OpenJDK 8 leads to duplicate -fstack-protector flags, overriding --with-extra-cflags
Summary: Apply -fstack-protector to all archs and remove duplication in JDK build
Reviewed-by: sgehwolf

 #
 # 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.
 #
 AC_DEFUN_ONCE([FLAGS_SETUP_INIT_FLAGS],
 [
   # Option used to tell the compiler whether to create 32- or 64-bit executables
   if test "x$TOOLCHAIN_TYPE" = xxlc; then
     COMPILER_TARGET_BITS_FLAG="-q"
   else
     COMPILER_TARGET_BITS_FLAG="-m"
   fi
   AC_SUBST(COMPILER_TARGET_BITS_FLAG)
   # FIXME: figure out if we should select AR flags depending on OS or toolchain.
   if test "x$OPENJDK_TARGET_OS" = xmacosx; then
     ARFLAGS="-r"
   elif test "x$OPENJDK_TARGET_OS" = xaix; then
     ARFLAGS="-X64"
   elif test "x$OPENJDK_TARGET_OS" = xwindows; then
     # lib.exe is used as AR to create static libraries.
     ARFLAGS="-nologo -NODEFAULTLIB:MSVCRT"
   else
     ARFLAGS=""
   fi
   AC_SUBST(ARFLAGS)
   ## Setup strip.
   # FIXME: should this really be per platform, or should it be per toolchain type?
   # strip is not provided by clang or solstudio; so guessing platform makes most sense.
   # FIXME: we should really only export STRIPFLAGS from here, not POST_STRIP_CMD.
   if test "x$OPENJDK_TARGET_OS" = xlinux; then
     STRIPFLAGS="-g"
   elif test "x$OPENJDK_TARGET_OS" = xsolaris; then
     STRIPFLAGS="-x"
   elif test "x$OPENJDK_TARGET_OS" = xmacosx; then
     STRIPFLAGS="-S"
   elif test "x$OPENJDK_TARGET_OS" = xaix; then
     STRIPFLAGS="-X32_64"
   fi
   if test "x$OPENJDK_TARGET_OS" != xwindows; then
     POST_STRIP_CMD="$STRIP $STRIPFLAGS"
   fi
   AC_SUBST(POST_STRIP_CMD)
   if test "x$OPENJDK_TARGET_OS" = xsolaris; then
     # FIXME: break out into MCSFLAGS
     POST_MCS_CMD="$MCS -d -a \"JDK $FULL_VERSION\""
   fi
   AC_SUBST(POST_MCS_CMD)
   if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
     CC_OUT_OPTION=-Fo
     EXE_OUT_OPTION=-out:
     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$(SPACE)'
     # When linking, how to specify the to be created executable.
     EXE_OUT_OPTION='-o$(SPACE)'
     # When linking, how to specify the to be created dynamically linkable library.
     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(EXE_OUT_OPTION)
   AC_SUBST(LD_OUT_OPTION)
   AC_SUBST(AR_OUT_OPTION)
   # On Windows, we need to set RC flags.
   if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
     RC_FLAGS="-nologo -l 0x409 -r"
     if test "x$VARIANT" = xOPT; then
       RC_FLAGS="$RC_FLAGS -d NDEBUG"
     fi
     # The version variables used to create RC_FLAGS may be overridden
     # in a custom configure script, or possibly the command line.
     # Let those variables be expanded at make time in spec.gmk.
     # The \$ are escaped to the shell, and the $(...) variables
     # are evaluated by make.
     RC_FLAGS="$RC_FLAGS \
         -d \"JDK_BUILD_ID=\$(FULL_VERSION)\" \
         -d \"JDK_COMPANY=\$(COMPANY_NAME)\" \
         -d \"JDK_COMPONENT=\$(PRODUCT_NAME) \$(JDK_RC_PLATFORM_NAME) binary\" \
         -d \"JDK_VER=\$(JDK_MINOR_VERSION).\$(JDK_MICRO_VERSION).\$(COOKED_JDK_UPDATE_VERSION).\$(COOKED_BUILD_NUMBER)\" \
         -d \"JDK_COPYRIGHT=Copyright \xA9 $COPYRIGHT_YEAR\" \
         -d \"JDK_NAME=\$(PRODUCT_NAME) \$(JDK_RC_PLATFORM_NAME) \$(JDK_MINOR_VERSION) \$(JDK_UPDATE_META_TAG)\" \
         -d \"JDK_FVER=\$(JDK_MINOR_VERSION),\$(JDK_MICRO_VERSION),\$(if \$(COOKED_JDK_UPDATE_VERSION),\$(COOKED_JDK_UPDATE_VERSION),0),\$(COOKED_BUILD_NUMBER)\""
   fi
   AC_SUBST(RC_FLAGS)
   if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
     # FIXME: likely bug, should be CCXXFLAGS_JDK? or one for C or CXX.
     CCXXFLAGS="$CCXXFLAGS -nologo"
   fi
   if test "x$SYSROOT" != "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.
         SYSROOT_CFLAGS="-I$SYSROOT/usr/include"
         SYSROOT_LDFLAGS="-L$SYSROOT/usr/lib$OPENJDK_TARGET_CPU_ISADIR \
             -L$SYSROOT/lib$OPENJDK_TARGET_CPU_ISADIR \
             -L$SYSROOT/usr/ccs/lib$OPENJDK_TARGET_CPU_ISADIR"
       fi
     elif test "x$TOOLCHAIN_TYPE" = xgcc; then
       SYSROOT_CFLAGS="--sysroot=\"$SYSROOT\""
       SYSROOT_LDFLAGS="--sysroot=\"$SYSROOT\""
     elif test "x$TOOLCHAIN_TYPE" = xclang; then
       SYSROOT_CFLAGS="-isysroot \"$SYSROOT\""
       SYSROOT_LDFLAGS="-isysroot \"$SYSROOT\""
     fi
     # Propagate the sysroot args to hotspot
     LEGACY_EXTRA_CFLAGS="$LEGACY_EXTRA_CFLAGS $SYSROOT_CFLAGS"
     LEGACY_EXTRA_CXXFLAGS="$LEGACY_EXTRA_CXXFLAGS $SYSROOT_CFLAGS"
     LEGACY_EXTRA_LDFLAGS="$LEGACY_EXTRA_LDFLAGS $SYSROOT_LDFLAGS"
   fi
   AC_SUBST(SYSROOT_CFLAGS)
   AC_SUBST(SYSROOT_LDFLAGS)
 ])
 AC_DEFUN_ONCE([FLAGS_SETUP_COMPILER_FLAGS_FOR_LIBS],
 [
   ###############################################################################
   #
   # How to compile shared libraries.
   #
   if test "x$TOOLCHAIN_TYPE" = xgcc; then
     PICFLAG="-fPIC"
     C_FLAG_REORDER=''
     CXX_FLAG_REORDER=''
     if test "x$OPENJDK_TARGET_OS" = xmacosx; then
       # Linking is different on MacOSX
       SHARED_LIBRARY_FLAGS="-dynamiclib -compatibility_version 1.0.0 -current_version 1.0.0 $PICFLAG"
       SET_EXECUTABLE_ORIGIN='-Xlinker -rpath -Xlinker @loader_path/.'
       SET_SHARED_LIBRARY_ORIGIN="$SET_EXECUTABLE_ORIGIN"
       SET_SHARED_LIBRARY_NAME='-Xlinker -install_name -Xlinker @rpath/[$]1'
       SET_SHARED_LIBRARY_MAPFILE=''
     else
       # Default works for linux, might work on other platforms as well.
       SHARED_LIBRARY_FLAGS='-shared'
       SET_EXECUTABLE_ORIGIN='-Xlinker -rpath -Xlinker \$$$$ORIGIN[$]1'
       SET_SHARED_LIBRARY_ORIGIN="-Xlinker -z -Xlinker origin $SET_EXECUTABLE_ORIGIN"
       SET_SHARED_LIBRARY_NAME='-Xlinker -soname=[$]1'
       SET_SHARED_LIBRARY_MAPFILE='-Xlinker -version-script=[$]1'
     fi
   elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
     PICFLAG="-KPIC"
     C_FLAG_REORDER='-xF'
     CXX_FLAG_REORDER='-xF'
     SHARED_LIBRARY_FLAGS="-G"
     SET_EXECUTABLE_ORIGIN='-R\$$$$ORIGIN[$]1'
     SET_SHARED_LIBRARY_ORIGIN="$SET_EXECUTABLE_ORIGIN"
     SET_SHARED_LIBRARY_NAME=''
     SET_SHARED_LIBRARY_MAPFILE='-M[$]1'
   elif test "x$TOOLCHAIN_TYPE" = xxlc; then
     PICFLAG="-qpic=large"
     C_FLAG_REORDER=''
     CXX_FLAG_REORDER=''
     SHARED_LIBRARY_FLAGS="-qmkshrobj"
     SET_EXECUTABLE_ORIGIN=""
     SET_SHARED_LIBRARY_ORIGIN=''
     SET_SHARED_LIBRARY_NAME=''
     SET_SHARED_LIBRARY_MAPFILE=''
   elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
     PICFLAG=""
     C_FLAG_REORDER=''
     CXX_FLAG_REORDER=''
     SHARED_LIBRARY_FLAGS="-LD"
     SET_EXECUTABLE_ORIGIN=''
     SET_SHARED_LIBRARY_ORIGIN=''
     SET_SHARED_LIBRARY_NAME=''
     SET_SHARED_LIBRARY_MAPFILE=''
   fi
   AC_SUBST(C_FLAG_REORDER)
   AC_SUBST(CXX_FLAG_REORDER)
   AC_SUBST(SHARED_LIBRARY_FLAGS)
   AC_SUBST(SET_EXECUTABLE_ORIGIN)
   AC_SUBST(SET_SHARED_LIBRARY_ORIGIN)
   AC_SUBST(SET_SHARED_LIBRARY_NAME)
   AC_SUBST(SET_SHARED_LIBRARY_MAPFILE)
   if test "x$OPENJDK_TARGET_OS" = xsolaris; then
     CFLAGS_JDK="${CFLAGS_JDK} -D__solaris__"
     CXXFLAGS_JDK="${CXXFLAGS_JDK} -D__solaris__"
     CFLAGS_JDKLIB_EXTRA='-xstrconst'
   fi
   # 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
     # FIXME: this will never happen since sparc != sparcv9, ie 32 bit, which we don't build anymore.
     # Bug?
     #if test "x$OPENJDK_TARGET_CPU" = xsparc; then
     #  CFLAGS_JDK="${CFLAGS_JDK} -xmemalign=4s"
     #  CXXFLAGS_JDK="${CXXFLAGS_JDK} -xmemalign=4s"
     #fi
 AC_DEFUN_ONCE([FLAGS_SETUP_COMPILER_FLAGS_FOR_OPTIMIZATION],
 [
   ###############################################################################
   #
   # Setup the opt flags for different compilers
   # and different operating systems.
   #
   # FIXME: this was indirectly the old default, but just inherited.
   # if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
   #   C_FLAG_DEPS="-MMD -MF"
   # fi
   # Generate make dependency files
   if test "x$TOOLCHAIN_TYPE" = xgcc; then
     C_FLAG_DEPS="-MMD -MF"
   elif test "x$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)
   # Debug symbols
   #
   # By default don't set any specific assembler debug
   # info flags for toolchains unless we know they work.
   # See JDK-8207057.
   ASFLAGS_DEBUG_SYMBOLS=""
   if test "x$TOOLCHAIN_TYPE" = xgcc; then
     if test "x$OPENJDK_TARGET_CPU_BITS" = "x64" && test "x$DEBUG_LEVEL" = "xfastdebug"; then
       CFLAGS_DEBUG_SYMBOLS="-g1"
       CXXFLAGS_DEBUG_SYMBOLS="-g1"
     else
       CFLAGS_DEBUG_SYMBOLS="-g"
       CXXFLAGS_DEBUG_SYMBOLS="-g"
     fi
     ASFLAGS_DEBUG_SYMBOLS="-g"
   elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
     CFLAGS_DEBUG_SYMBOLS="-g -xs"
     CXXFLAGS_DEBUG_SYMBOLS="-g0 -xs"
   elif test "x$TOOLCHAIN_TYPE" = xxlc; then
     CFLAGS_DEBUG_SYMBOLS="-g"
     CXXFLAGS_DEBUG_SYMBOLS="-g"
   fi
   AC_SUBST(ASFLAGS_DEBUG_SYMBOLS)
   AC_SUBST(CFLAGS_DEBUG_SYMBOLS)
   AC_SUBST(CXXFLAGS_DEBUG_SYMBOLS)
   # Optimization levels
   if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
     CC_HIGHEST="$CC_HIGHEST -fns -fsimple -fsingle -xalias_level=basic -xbuiltin=%all -xdepend -xrestrict -xlibmil"
     if test "x$OPENJDK_TARGET_CPU_ARCH" = "xx86"; then
       # FIXME: seems we always set -xregs=no%frameptr; put it elsewhere more global?
       C_O_FLAG_HIGHEST="-xO4 -Wu,-O4~yz $CC_HIGHEST -xregs=no%frameptr"
       C_O_FLAG_HI="-xO4 -Wu,-O4~yz -xregs=no%frameptr"
       C_O_FLAG_NORM="-xO2 -Wu,-O2~yz -xregs=no%frameptr"
       C_O_FLAG_NONE="-xregs=no%frameptr"
       CXX_O_FLAG_HIGHEST="-xO4 -Qoption ube -O4~yz $CC_HIGHEST -xregs=no%frameptr"
       CXX_O_FLAG_HI="-xO4 -Qoption ube -O4~yz -xregs=no%frameptr"
       CXX_O_FLAG_NORM="-xO2 -Qoption ube -O2~yz -xregs=no%frameptr"
       CXX_O_FLAG_NONE="-xregs=no%frameptr"
       if test "x$OPENJDK_TARGET_CPU_BITS" = "x32"; then
         C_O_FLAG_HIGHEST="$C_O_FLAG_HIGHEST -xchip=pentium"
         CXX_O_FLAG_HIGHEST="$CXX_O_FLAG_HIGHEST -xchip=pentium"
       fi
     elif test "x$OPENJDK_TARGET_CPU_ARCH" = "xsparc"; then
       C_O_FLAG_HIGHEST="-xO4 -Wc,-Qrm-s -Wc,-Qiselect-T0 $CC_HIGHEST -xprefetch=auto,explicit -xchip=ultra"
       C_O_FLAG_HI="-xO4 -Wc,-Qrm-s -Wc,-Qiselect-T0"
       C_O_FLAG_NORM="-xO2 -Wc,-Qrm-s -Wc,-Qiselect-T0"
       C_O_FLAG_NONE=""
       CXX_O_FLAG_HIGHEST="-xO4 -Qoption cg -Qrm-s -Qoption cg -Qiselect-T0 $CC_HIGHEST -xprefetch=auto,explicit -xchip=ultra"
       CXX_O_FLAG_HI="-xO4 -Qoption cg -Qrm-s -Qoption cg -Qiselect-T0"
       CXX_O_FLAG_NORM="-xO2 -Qoption cg -Qrm-s -Qoption cg -Qiselect-T0"
       CXX_O_FLAG_NONE=""
     fi
   else
     # The remaining toolchains share opt flags between CC and CXX;
     # setup for C and duplicate afterwards.
     if test "x$TOOLCHAIN_TYPE" = xgcc; then
       if test "x$OPENJDK_TARGET_OS" = xmacosx; then
         # On MacOSX we optimize for size, something
         # we should do for all platforms?
         C_O_FLAG_HIGHEST="-Os"
         C_O_FLAG_HI="-Os"
         C_O_FLAG_NORM="-Os"
         C_O_FLAG_NONE=""
       else
         C_O_FLAG_HIGHEST="-O3"
         C_O_FLAG_HI="-O3"
         C_O_FLAG_NORM="-O2"
         C_O_FLAG_NONE="-O0"
       fi
     elif test "x$TOOLCHAIN_TYPE" = xxlc; then
       C_O_FLAG_HIGHEST="-O3"
       C_O_FLAG_HI="-O3 -qstrict"
       C_O_FLAG_NORM="-O2"
       C_O_FLAG_NONE=""
     elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
       C_O_FLAG_HIGHEST="-O2"
       C_O_FLAG_HI="-O1"
       C_O_FLAG_NORM="-O1"
       C_O_FLAG_NONE="-Od"
     fi
     CXX_O_FLAG_HIGHEST="$C_O_FLAG_HIGHEST"
     CXX_O_FLAG_HI="$C_O_FLAG_HI"
     CXX_O_FLAG_NORM="$C_O_FLAG_NORM"
     CXX_O_FLAG_NONE="$C_O_FLAG_NONE"
   fi
   AC_SUBST(C_O_FLAG_HIGHEST)
   AC_SUBST(C_O_FLAG_HI)
   AC_SUBST(C_O_FLAG_NORM)
   AC_SUBST(C_O_FLAG_NONE)
   AC_SUBST(CXX_O_FLAG_HIGHEST)
   AC_SUBST(CXX_O_FLAG_HI)
   AC_SUBST(CXX_O_FLAG_NORM)
   AC_SUBST(CXX_O_FLAG_NONE)
 ])
 AC_DEFUN_ONCE([FLAGS_SETUP_COMPILER_FLAGS_FOR_JDK],
 [
   # Special extras...
   if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
     if test "x$OPENJDK_TARGET_CPU_ARCH" = "xsparc"; then
       CFLAGS_JDKLIB_EXTRA="${CFLAGS_JDKLIB_EXTRA} -xregs=no%appl"
       CXXFLAGS_JDKLIB_EXTRA="${CXXFLAGS_JDKLIB_EXTRA} -xregs=no%appl"
     fi
   elif test "x$TOOLCHAIN_TYPE" = xxlc; then
     LDFLAGS_JDK="${LDFLAGS_JDK} -q64 -brtl -bnolibpath -liconv -bexpall"
     CFLAGS_JDK="${CFLAGS_JDK} -qchars=signed -q64 -qfullpath -qsaveopt"
     CXXFLAGS_JDK="${CXXFLAGS_JDK} -qchars=signed -q64 -qfullpath -qsaveopt"
   elif test "x$TOOLCHAIN_TYPE" = xgcc; then
     LEGACY_EXTRA_CFLAGS="$LEGACY_EXTRA_CFLAGS -fstack-protector"
     LEGACY_EXTRA_CXXFLAGS="$LEGACY_EXTRA_CXXFLAGS -fstack-protector"
     if test "x$OPENJDK_TARGET_OS" != xmacosx; then
       LDFLAGS_JDK="$LDFLAGS_JDK -Wl,-z,relro"
       LEGACY_EXTRA_LDFLAGS="$LEGACY_EXTRA_LDFLAGS -Wl,-z,relro"
     fi
     $2CXXSTD_CXXFLAG="-std=gnu++98"
     FLAGS_CXX_COMPILER_CHECK_ARGUMENTS([[$]$2CXXSTD_CXXFLAG -Werror],
                                        [], [$2CXXSTD_CXXFLAG=""])
     $2CXXFLAGS_JDK="${$2CXXFLAGS_JDK} ${$2CXXSTD_CXXFLAG}"
     $2JVM_CFLAGS="${$2JVM_CFLAGS} ${$2CXXSTD_CXXFLAG}"
     AC_SUBST($2CXXSTD_CXXFLAG)
   fi
   if test "x$CFLAGS" != "x${ADDED_CFLAGS}"; then
     AC_MSG_WARN([Ignoring CFLAGS($CFLAGS) found in environment. Use --with-extra-cflags])
   fi
   if test "x$CXXFLAGS" != "x${ADDED_CXXFLAGS}"; then
     AC_MSG_WARN([Ignoring CXXFLAGS($CXXFLAGS) found in environment. Use --with-extra-cxxflags])
   fi
   if test "x$LDFLAGS" != "x${ADDED_LDFLAGS}"; then
     AC_MSG_WARN([Ignoring LDFLAGS($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])])
   CFLAGS_JDK="${CFLAGS_JDK} $with_extra_cflags"
   CXXFLAGS_JDK="${CXXFLAGS_JDK} $with_extra_cxxflags"
   LDFLAGS_JDK="${LDFLAGS_JDK} $with_extra_ldflags"
   # Hotspot needs these set in their legacy form
   LEGACY_EXTRA_CFLAGS="$LEGACY_EXTRA_CFLAGS $with_extra_cflags"
   LEGACY_EXTRA_CXXFLAGS="$LEGACY_EXTRA_CXXFLAGS $with_extra_cxxflags"
   LEGACY_EXTRA_LDFLAGS="$LEGACY_EXTRA_LDFLAGS $with_extra_ldflags"
   AC_SUBST(LEGACY_EXTRA_CFLAGS)
   AC_SUBST(LEGACY_EXTRA_CXXFLAGS)
   AC_SUBST(LEGACY_EXTRA_LDFLAGS)
   ###############################################################################
   #
   # Now setup the CFLAGS and LDFLAGS for the JDK build.
   # Later we will also have CFLAGS and LDFLAGS for the hotspot subrepo build.
   #
   FDLIBM_CFLAGS=""
   # Setup compiler/platform specific flags to CFLAGS_JDK,
   # CXXFLAGS_JDK and CCXXFLAGS_JDK (common to C and CXX?)
   if test "x$TOOLCHAIN_TYPE" = xgcc; then
     # these options are used for both C and C++ compiles
     CCXXFLAGS_JDK="$CCXXFLAGS $CCXXFLAGS_JDK -Wall -Wno-parentheses -Wextra -Wno-unused -Wno-unused-parameter -Wformat=2 \
         -pipe -fstack-protector -D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE"
     case $OPENJDK_TARGET_CPU_ARCH in
       arm )
         # on arm we don't prevent gcc to omit frame pointer but do prevent strict aliasing
         CFLAGS_JDK="${CFLAGS_JDK} -fno-strict-aliasing"
         ;;
       ppc )
         # on ppc we don't prevent gcc to omit frame pointer nor strict-aliasing
         ;;
       * )
         CCXXFLAGS_JDK="$CCXXFLAGS_JDK -fno-omit-frame-pointer"
         CFLAGS_JDK="${CFLAGS_JDK} -fno-strict-aliasing"
         ;;
     esac
     TOOLCHAIN_CHECK_COMPILER_VERSION(6, FLAGS_SETUP_GCC6_COMPILER_FLAGS)
     # Check that the compiler supports -ffp-contract=off flag
     # Set FDLIBM_CFLAGS to -ffp-contract=off if it does.
     # For GCC < 4.6, on x86, x86_64 and ppc check for
     # -mno-fused-madd and -fno-strict-aliasing. If they exist,
     # use them as a substitute for -ffp-contract=off.
     #
     # These flags are required for GCC-based builds of
     # fdlibm with optimization without losing precision.
     # Notably, -ffp-contract=off needs to be added for GCC >= 4.6,
     #          -mno-fused-madd -fno-strict-aliasing for GCC < 4.6
     COMPILER_FP_CONTRACT_OFF_FLAG="-ffp-contract=off"
     FLAGS_CXX_COMPILER_CHECK_ARGUMENTS([[$]COMPILER_FP_CONTRACT_OFF_FLAG -Werror],
                                        [], [COMPILER_FP_CONTRACT_OFF_FLAG=""])
     if test "x$COMPILER_FP_CONTRACT_OFF_FLAG" = x; then
       if test "$OPENJDK_TARGET_CPU_ARCH" = "x86" ||
          test "$OPENJDK_TARGET_CPU_ARCH" = "x86_64" ||
          test "$OPENJDK_TARGET_CPU_ARCH" = "ppc"; then
         M_NO_FUSED_ADD_FLAG="-mno-fused-madd"
         FLAGS_CXX_COMPILER_CHECK_ARGUMENTS([[$]M_NO_FUSED_ADD_FLAG -Werror],
                                            [], [M_NO_FUSED_ADD_FLAG=""])
         NO_STRICT_ALIASING_FLAG="-fno-strict-aliasing"
         FLAGS_CXX_COMPILER_CHECK_ARGUMENTS([[$]NO_STRICT_ALIASING_FLAG -Werror],
                                            [], [NO_STRICT_ALIASING_FLAG=""])
         if test "x$M_NO_FUSED_ADD_FLAG" != "x" && test "x$NO_STRICT_ALIASING_FLAG" != "x"; then
           FDLIBM_CFLAGS="$M_NO_FUSED_ADD_FLAG $NO_STRICT_ALIASING_FLAG"
         fi
       fi
     else
       FDLIBM_CFLAGS="$COMPILER_FP_CONTRACT_OFF_FLAG"
     fi
   elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
     CCXXFLAGS_JDK="$CCXXFLAGS $CCXXFLAGS_JDK -DTRACING -DMACRO_MEMSYS_OPS -DBREAKPTS"
     if test "x$OPENJDK_TARGET_CPU_ARCH" = xx86; then
       CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DcpuIntel -Di586 -D$OPENJDK_TARGET_CPU_LEGACY_LIB"
       CFLAGS_JDK="$CFLAGS_JDK -erroff=E_BAD_PRAGMA_PACK_VALUE"
     fi
     CFLAGS_JDK="$CFLAGS_JDK -xc99=%none -xCC -errshort=tags -Xa -v -mt -W0,-noglobal"
     CXXFLAGS_JDK="$CXXFLAGS_JDK -errtags=yes +w -mt -features=no%except -DCC_NOEX -norunpath -xnolib"
   elif test "x$TOOLCHAIN_TYPE" = xxlc; then
     CFLAGS_JDK="$CFLAGS_JDK -D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE -DSTDC"
     CXXFLAGS_JDK="$CXXFLAGS_JDK -D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE -DSTDC"
   elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
     CCXXFLAGS_JDK="$CCXXFLAGS $CCXXFLAGS_JDK \
         -Zi -MD -Zc:wchar_t- -W3 -wd4800 \
         -DWIN32_LEAN_AND_MEAN \
         -D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE \
         -DWIN32 -DIAL"
     if test "x$OPENJDK_TARGET_CPU" = xx86_64; then
       CCXXFLAGS_JDK="$CCXXFLAGS_JDK -D_AMD64_ -Damd64"
     else
       CCXXFLAGS_JDK="$CCXXFLAGS_JDK -D_X86_ -Dx86"
     fi
     # If building with Visual Studio 2010, we can still use _STATIC_CPPLIB to
     # avoid bundling msvcpNNN.dll. Doesn't work with newer versions of visual
     # studio.
     if test "x$TOOLCHAIN_VERSION" = "x2010"; then
       CCXXFLAGS_JDK="$CCXXFLAGS_JDK \
           -D_STATIC_CPPLIB -D_DISABLE_DEPRECATE_STATIC_CPPLIB"
     fi
   fi
   AC_SUBST(FDLIBM_CFLAGS)
   ###############################################################################
   # Adjust flags according to debug level.
   case $DEBUG_LEVEL in
     fastdebug )
       CFLAGS_JDK="$CFLAGS_JDK $CFLAGS_DEBUG_SYMBOLS"
       CXXFLAGS_JDK="$CXXFLAGS_JDK $CXXFLAGS_DEBUG_SYMBOLS"
       C_O_FLAG_HI="$C_O_FLAG_NORM"
       C_O_FLAG_NORM="$C_O_FLAG_NORM"
       CXX_O_FLAG_HI="$CXX_O_FLAG_NORM"
       CXX_O_FLAG_NORM="$CXX_O_FLAG_NORM"
       JAVAC_FLAGS="$JAVAC_FLAGS -g"
       ;;
     slowdebug )
       CFLAGS_JDK="$CFLAGS_JDK $CFLAGS_DEBUG_SYMBOLS"
       CXXFLAGS_JDK="$CXXFLAGS_JDK $CXXFLAGS_DEBUG_SYMBOLS"
       C_O_FLAG_HI="$C_O_FLAG_NONE"
       C_O_FLAG_NORM="$C_O_FLAG_NONE"
       CXX_O_FLAG_HI="$CXX_O_FLAG_NONE"
       CXX_O_FLAG_NORM="$CXX_O_FLAG_NONE"
       JAVAC_FLAGS="$JAVAC_FLAGS -g"
       ;;
   esac
   # Setup LP64
   CCXXFLAGS_JDK="$CCXXFLAGS_JDK $ADD_LP64"
   # Set some common defines. These works for all compilers, but assume
   # -D is universally accepted.
   # Setup endianness
   if test "x$OPENJDK_TARGET_CPU_ENDIAN" = xlittle; then
     # The macro _LITTLE_ENDIAN needs to be defined the same to avoid the
     #   Sun C compiler warning message: warning: macro redefined: _LITTLE_ENDIAN
     #   (The Solaris X86 system defines this in file /usr/include/sys/isa_defs.h).
     #   Note: -Dmacro         is the same as    #define macro 1
     #         -Dmacro=        is the same as    #define macro
     if test "x$OPENJDK_TARGET_OS" = xsolaris; then
       CCXXFLAGS_JDK="$CCXXFLAGS_JDK -D_LITTLE_ENDIAN="
     else
       CCXXFLAGS_JDK="$CCXXFLAGS_JDK -D_LITTLE_ENDIAN"
     fi
   else
     # Same goes for _BIG_ENDIAN. Do we really need to set *ENDIAN on Solaris if they
     # are defined in the system?
     if test "x$OPENJDK_TARGET_OS" = xsolaris; then
       CCXXFLAGS_JDK="$CCXXFLAGS_JDK -D_BIG_ENDIAN="
     else
       CCXXFLAGS_JDK="$CCXXFLAGS_JDK -D_BIG_ENDIAN"
     fi
   fi
   if test "x$OPENJDK_TARGET_CPU" = xppc64le; then
     CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DABI_ELFv2"
   fi
   # Setup target OS define. Use OS target name but in upper case.
   OPENJDK_TARGET_OS_UPPERCASE=`$ECHO $OPENJDK_TARGET_OS | $TR 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
   CCXXFLAGS_JDK="$CCXXFLAGS_JDK -D$OPENJDK_TARGET_OS_UPPERCASE"
   # Setup target CPU
   CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DARCH='\"$OPENJDK_TARGET_CPU_LEGACY\"' -D$OPENJDK_TARGET_CPU_LEGACY"
   # Setup debug/release defines
   if test "x$DEBUG_LEVEL" = xrelease; then
     CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DNDEBUG"
     if test "x$OPENJDK_TARGET_OS" = xsolaris; then
       CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DTRIMMED"
     fi
   else
     CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DDEBUG"
   fi
   # Setup release name
   CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DRELEASE='\"\$(RELEASE)\"'"
   # Set some additional per-OS defines.
   if test "x$OPENJDK_TARGET_OS" = xmacosx; then
     CCXXFLAGS_JDK="$CCXXFLAGS_JDK -D_ALLBSD_SOURCE -D_DARWIN_UNLIMITED_SELECT"
   elif test "x$OPENJDK_TARGET_OS" = xaix; then
     # FIXME: PPC64 should not be here.
     CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DPPC64"
   elif test "x$OPENJDK_TARGET_OS" = xbsd; then
     CCXXFLAGS_JDK="$CCXXFLAGS_JDK -D_ALLBSD_SOURCE"
   fi
   # Additional macosx handling
   if test "x$OPENJDK_TARGET_OS" = xmacosx; then
     if test "x$TOOLCHAIN_TYPE" = xgcc; then
       # FIXME: This needs to be exported in spec.gmk due to closed legacy code.
       # FIXME: clean this up, and/or move it elsewhere.
       # Setting these parameters makes it an error to link to macosx APIs that are
       # newer than the given OS version and makes the linked binaries compatible
       # even if built on a newer version of the OS.
       # The expected format is X.Y.Z
       MACOSX_VERSION_MIN=10.7.0
       AC_SUBST(MACOSX_VERSION_MIN)
       # The macro takes the version with no dots, ex: 1070
       # Let the flags variables get resolved in make for easier override on make
       # command line.
       CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DMAC_OS_X_VERSION_MAX_ALLOWED=\$(subst .,,\$(MACOSX_VERSION_MIN)) -mmacosx-version-min=\$(MACOSX_VERSION_MIN)"
       LDFLAGS_JDK="$LDFLAGS_JDK -mmacosx-version-min=\$(MACOSX_VERSION_MIN)"
     fi
   fi
   # Setup some hard coded includes
   CCXXFLAGS_JDK="$CCXXFLAGS_JDK \
       -I${JDK_OUTPUTDIR}/include \
       -I${JDK_OUTPUTDIR}/include/$OPENJDK_TARGET_OS \
       -I${JDK_TOPDIR}/src/share/javavm/export \
       -I${JDK_TOPDIR}/src/$OPENJDK_TARGET_OS_EXPORT_DIR/javavm/export \
       -I${JDK_TOPDIR}/src/share/native/common \
       -I${JDK_TOPDIR}/src/$OPENJDK_TARGET_OS_API_DIR/native/common"
   # The shared libraries are compiled using the picflag.
   CFLAGS_JDKLIB="$CCXXFLAGS_JDK $CFLAGS_JDK $PICFLAG $CFLAGS_JDKLIB_EXTRA"
   CXXFLAGS_JDKLIB="$CCXXFLAGS_JDK $CXXFLAGS_JDK $PICFLAG $CXXFLAGS_JDKLIB_EXTRA "
   # Executable flags
   CFLAGS_JDKEXE="$CCXXFLAGS_JDK $CFLAGS_JDK"
   CXXFLAGS_JDKEXE="$CCXXFLAGS_JDK $CXXFLAGS_JDK"
   AC_SUBST(CFLAGS_JDKLIB)
   AC_SUBST(CFLAGS_JDKEXE)
   AC_SUBST(CXXFLAGS_JDKLIB)
   AC_SUBST(CXXFLAGS_JDKEXE)
   # Setup LDFLAGS et al.
   #
   # Now this is odd. The JDK native libraries have to link against libjvm.so
   # On 32-bit machines there is normally two distinct libjvm.so:s, client and server.
   # Which should we link to? Are we lucky enough that the binary api to the libjvm.so library
   # is identical for client and server? Yes. Which is picked at runtime (client or server)?
   # Neither, since the chosen libjvm.so has already been loaded by the launcher, all the following
   # libraries will link to whatever is in memory. Yuck.
   #
   # Thus we offer the compiler to find libjvm.so first in server then in client. It works. Ugh.
   if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
     LDFLAGS_JDK="$LDFLAGS_JDK -nologo -opt:ref -incremental:no"
     if test "x$OPENJDK_TARGET_CPU_BITS" = "x32"; then
       LDFLAGS_JDK="$LDFLAGS_JDK -safeseh"
     fi
     # TODO: make -debug optional "--disable-full-debug-symbols"
     LDFLAGS_JDK="$LDFLAGS_JDK -debug"
     LDFLAGS_JDKLIB="${LDFLAGS_JDK} -dll -libpath:${JDK_OUTPUTDIR}/lib"
     LDFLAGS_JDKLIB_SUFFIX=""
     if test "x$OPENJDK_TARGET_CPU_BITS" = "x64"; then
       LDFLAGS_STACK_SIZE=1048576
     else
       LDFLAGS_STACK_SIZE=327680
     fi
     LDFLAGS_JDKEXE="${LDFLAGS_JDK} /STACK:$LDFLAGS_STACK_SIZE"
   else
     if test "x$TOOLCHAIN_TYPE" = xgcc; then
       # If this is a --hash-style=gnu system, use --hash-style=both, why?
       # We have previously set HAS_GNU_HASH if this is the case
       if test -n "$HAS_GNU_HASH"; then
         LDFLAGS_JDK="${LDFLAGS_JDK} -Xlinker --hash-style=both "
       fi
       if test "x$OPENJDK_TARGET_OS" = xlinux; then
         # And since we now know that the linker is gnu, then add:
         #   -z defs, to forbid undefined symbols in object files
         #   -z noexecstack, to mark stack regions as non-executable
         LDFLAGS_JDK="${LDFLAGS_JDK} -Xlinker -z -Xlinker defs -Xlinker -z -Xlinker noexecstack"
         if test "x$DEBUG_LEVEL" = "xrelease"; then
           # When building release libraries, tell the linker optimize them.
           # Should this be supplied to the OSS linker as well?
           LDFLAGS_JDK="${LDFLAGS_JDK} -Xlinker -O1"
         fi
       fi
     fi
     if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
       LDFLAGS_JDK="$LDFLAGS_JDK -z defs -xildoff -ztext"
       LDFLAGS_CXX_JDK="$LDFLAGS_CXX_JDK -norunpath -xnolib"
     fi
     LDFLAGS_JDKLIB="${LDFLAGS_JDK} $SHARED_LIBRARY_FLAGS \
         -L${JDK_OUTPUTDIR}/lib${OPENJDK_TARGET_CPU_LIBDIR}"
     # On some platforms (mac) the linker warns about non existing -L dirs.
     # Add server first if available. Linking aginst client does not always produce the same results.
     # Only add client dir if client is being built. Add minimal (note not minimal1) if only building minimal1.
     # Default to server for other variants.
     if test "x$JVM_VARIANT_SERVER" = xtrue; then
       LDFLAGS_JDKLIB="${LDFLAGS_JDKLIB} -L${JDK_OUTPUTDIR}/lib${OPENJDK_TARGET_CPU_LIBDIR}/server"
     elif test "x$JVM_VARIANT_CLIENT" = xtrue; then
       LDFLAGS_JDKLIB="${LDFLAGS_JDKLIB} -L${JDK_OUTPUTDIR}/lib${OPENJDK_TARGET_CPU_LIBDIR}/client"
     elif test "x$JVM_VARIANT_MINIMAL1" = xtrue; then
       LDFLAGS_JDKLIB="${LDFLAGS_JDKLIB} -L${JDK_OUTPUTDIR}/lib${OPENJDK_TARGET_CPU_LIBDIR}/minimal"
     else
       LDFLAGS_JDKLIB="${LDFLAGS_JDKLIB} -L${JDK_OUTPUTDIR}/lib${OPENJDK_TARGET_CPU_LIBDIR}/server"
     fi
     LDFLAGS_JDKLIB_SUFFIX="-ljava -ljvm"
     if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
       LDFLAGS_JDKLIB_SUFFIX="$LDFLAGS_JDKLIB_SUFFIX -lc"
     fi
     LDFLAGS_JDKEXE="${LDFLAGS_JDK}"
     if test "x$OPENJDK_TARGET_OS" = xlinux; then
       LDFLAGS_JDKEXE="$LDFLAGS_JDKEXE -Xlinker --allow-shlib-undefined"
     fi
   fi
   AC_SUBST(LDFLAGS_JDKLIB)
   AC_SUBST(LDFLAGS_JDKEXE)
   AC_SUBST(LDFLAGS_JDKLIB_SUFFIX)
   AC_SUBST(LDFLAGS_JDKEXE_SUFFIX)
   AC_SUBST(LDFLAGS_CXX_JDK)
 ])
 # FLAGS_C_COMPILER_CHECK_ARGUMENTS([ARGUMENT], [RUN-IF-TRUE],
 #                                  [RUN-IF-FALSE])
 # ------------------------------------------------------------
 # Check that the C compiler supports an argument
 AC_DEFUN([FLAGS_C_COMPILER_CHECK_ARGUMENTS],
 [
   AC_MSG_CHECKING([if the C compiler supports "$1"])
   supports=yes
   saved_cflags="$CFLAGS"
   CFLAGS="$CFLAGS $1"
   AC_LANG_PUSH([C])
   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int i;]])], [],
       [supports=no])
   AC_LANG_POP([C])
   CFLAGS="$saved_cflags"
   AC_MSG_RESULT([$supports])
   if test "x$supports" = "xyes" ; then
     m4_ifval([$2], [$2], [:])
   else
     m4_ifval([$3], [$3], [:])
   fi
 ])
 # FLAGS_CXX_COMPILER_CHECK_ARGUMENTS([ARGUMENT], [RUN-IF-TRUE],
 #                                    [RUN-IF-FALSE])
 # ------------------------------------------------------------
 # Check that the C++ compiler supports an argument
 AC_DEFUN([FLAGS_CXX_COMPILER_CHECK_ARGUMENTS],
 [
   AC_MSG_CHECKING([if the C++ compiler supports "$1"])
   supports=yes
   saved_cxxflags="$CXXFLAGS"
   CXXFLAGS="$CXXFLAG $1"
   AC_LANG_PUSH([C++])
   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int i;]])], [],
       [supports=no])
   AC_LANG_POP([C++])
   CXXFLAGS="$saved_cxxflags"
   AC_MSG_RESULT([$supports])
   if test "x$supports" = "xyes" ; then
     m4_ifval([$2], [$2], [:])
   else
     m4_ifval([$3], [$3], [:])
   fi
 ])
 # FLAGS_COMPILER_CHECK_ARGUMENTS([ARGUMENT], [RUN-IF-TRUE],
 #                                [RUN-IF-FALSE])
 # ------------------------------------------------------------
 # Check that the C and C++ compilers support an argument
 AC_DEFUN([FLAGS_COMPILER_CHECK_ARGUMENTS],
 [
   FLAGS_C_COMPILER_CHECK_ARGUMENTS([$1],
                        [C_COMP_SUPPORTS="yes"],
                        [C_COMP_SUPPORTS="no"])
   FLAGS_CXX_COMPILER_CHECK_ARGUMENTS([$1],
                      [CXX_COMP_SUPPORTS="yes"],
                      [CXX_COMP_SUPPORTS="no"])
   AC_MSG_CHECKING([if both compilers support "$1"])
   supports=no
   if test "x$C_COMP_SUPPORTS" = "xyes" -a "x$CXX_COMP_SUPPORTS" = "xyes"; then supports=yes; fi
   AC_MSG_RESULT([$supports])
   if test "x$supports" = "xyes" ; then
     m4_ifval([$2], [$2], [:])
   else
     m4_ifval([$3], [$3], [:])
   fi
 ])
 AC_DEFUN_ONCE([FLAGS_SETUP_COMPILER_FLAGS_MISC],
 [
   # Some Zero and Shark settings.
   # ZERO_ARCHFLAG tells the compiler which mode to build for
   case "${OPENJDK_TARGET_CPU}" in
     s390)
       ZERO_ARCHFLAG="${COMPILER_TARGET_BITS_FLAG}31"
       ;;
     *)
       ZERO_ARCHFLAG="${COMPILER_TARGET_BITS_FLAG}${OPENJDK_TARGET_CPU_BITS}"
   esac
   FLAGS_COMPILER_CHECK_ARGUMENTS([$ZERO_ARCHFLAG], [], [ZERO_ARCHFLAG=""])
   AC_SUBST(ZERO_ARCHFLAG)
   # 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([${COMPILER_TARGET_BITS_FLAG}${OPENJDK_TARGET_CPU_BITS}],
       [COMPILER_SUPPORTS_TARGET_BITS_FLAG=true],
       [COMPILER_SUPPORTS_TARGET_BITS_FLAG=false])
   AC_SUBST(COMPILER_SUPPORTS_TARGET_BITS_FLAG)
 ])
 AC_DEFUN_ONCE([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"
   FLAGS_COMPILER_CHECK_ARGUMENTS([$NO_DELETE_NULL_POINTER_CHECKS_CFLAG -Werror],
                                      [], [NO_DELETE_NULL_POINTER_CHECKS_CFLAG=""])
   AC_SUBST([NO_DELETE_NULL_POINTER_CHECKS_CFLAG])
   NO_LIFETIME_DSE_CFLAG="-fno-lifetime-dse"
   FLAGS_COMPILER_CHECK_ARGUMENTS([$NO_LIFETIME_DSE_CFLAG -Werror],
                                      [], [NO_LIFETIME_DSE_CFLAG=""])
   CFLAGS_JDK="${CFLAGS_JDK} ${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} ${NO_LIFETIME_DSE_CFLAG}"
   AC_SUBST([NO_LIFETIME_DSE_CFLAG])
 ])

Mercurial > jdk8-mips64-public / annotate

common/autoconf/flags.m4@ef88239d3d16 (annotated)

common/autoconf/flags.m4