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Quellverzeichnis flags-cflags.m4
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#
# Copyright (c) 2011, 2022, 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. # ################################################################################ # # Setup flags for C/C++ compiler # ############################################################################### # # How to compile shared libraries. # AC_DEFUN([FLAGS_SETUP_SHARED_LIBS], [ if test "x$TOOLCHAIN_TYPE" = xgcc; then # Default works for linux, might work on other platforms as well. SHARED_LIBRARY_FLAGS='-shared' SET_EXECUTABLE_ORIGIN='-Wl,-rpath,\$$ORIGIN[$]1' SET_SHARED_LIBRARY_ORIGIN="-Wl,-z,origin $SET_EXECUTABLE_ORIGIN" SET_SHARED_LIBRARY_NAME='-Wl,-soname=[$]1' SET_SHARED_LIBRARY_MAPFILE='-Wl,-version-script=[$]1' elif test "x$TOOLCHAIN_TYPE" = xclang; then if test "x$OPENJDK_TARGET_OS" = xmacosx; then # Linking is different on MacOSX SHARED_LIBRARY_FLAGS="-dynamiclib -compatibility_version 1.0.0 -current_version SET_EXECUTABLE_ORIGIN='-Wl,-rpath,@loader_path$(or [$]1,/.)' SET_SHARED_LIBRARY_ORIGIN="$SET_EXECUTABLE_ORIGIN" SET_SHARED_LIBRARY_NAME='-Wl,-install_name,@rpath/[$]1' SET_SHARED_LIBRARY_MAPFILE='-Wl,-exported_symbols_list,[$]1' else # Default works for linux, might work on other platforms as well. SHARED_LIBRARY_FLAGS='-shared' SET_EXECUTABLE_ORIGIN='-Wl,-rpath,\$$ORIGIN[$]1' SET_SHARED_LIBRARY_NAME='-Wl,-soname=[$]1' SET_SHARED_LIBRARY_MAPFILE='-Wl,-version-script=[$]1' # arm specific settings if test "x$OPENJDK_TARGET_CPU" = "xarm"; then # '-Wl,-z,origin' isn't used on arm. SET_SHARED_LIBRARY_ORIGIN='-Wl,-rpath,\$$$$ORIGIN[$]1' else SET_SHARED_LIBRARY_ORIGIN="-Wl,-z,origin $SET_EXECUTABLE_ORIGIN" fi fi elif test "x$TOOLCHAIN_TYPE" = xxlc; then SHARED_LIBRARY_FLAGS="-qmkshrobj -bM:SRE -bnoentry" SET_EXECUTABLE_ORIGIN="" SET_SHARED_LIBRARY_ORIGIN='' SET_SHARED_LIBRARY_NAME='' SET_SHARED_LIBRARY_MAPFILE='' elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then SHARED_LIBRARY_FLAGS="-dll" SET_EXECUTABLE_ORIGIN='' SET_SHARED_LIBRARY_ORIGIN='' SET_SHARED_LIBRARY_NAME='' SET_SHARED_LIBRARY_MAPFILE='-def:[$]1' fi AC_SUBST(SET_EXECUTABLE_ORIGIN) AC_SUBST(SET_SHARED_LIBRARY_ORIGIN) AC_SUBST(SET_SHARED_LIBRARY_NAME) AC_SUBST(SET_SHARED_LIBRARY_MAPFILE) AC_SUBST(SHARED_LIBRARY_FLAGS) ]) AC_DEFUN([FLAGS_SETUP_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="" # Debug prefix mapping if supported by compiler DEBUG_PREFIX_CFLAGS= # Debug symbols if test "x$TOOLCHAIN_TYPE" = xgcc; then if test "x$ALLOW_ABSOLUTE_PATHS_IN_OUTPUT" = "xfalse"; then # Check if compiler supports -fdebug-prefix-map. If so, use that to make # the debug symbol paths resolve to paths relative to the workspace root. workspace_root_trailing_slash="${WORKSPACE_ROOT%/}/" DEBUG_PREFIX_CFLAGS="-fdebug-prefix-map=${workspace_root_trailing_slash}=" FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${DEBUG_PREFIX_CFLAGS}], IF_FALSE: [ DEBUG_PREFIX_CFLAGS= ] ) fi CFLAGS_DEBUG_SYMBOLS="-g -gdwarf-4" ASFLAGS_DEBUG_SYMBOLS="-g" elif test "x$TOOLCHAIN_TYPE" = xclang; then if test "x$ALLOW_ABSOLUTE_PATHS_IN_OUTPUT" = "xfalse"; then # Check if compiler supports -fdebug-prefix-map. If so, use that to make # the debug symbol paths resolve to paths relative to the workspace root. workspace_root_trailing_slash="${WORKSPACE_ROOT%/}/" DEBUG_PREFIX_CFLAGS="-fdebug-prefix-map=${workspace_root_trailing_slash}=" FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${DEBUG_PREFIX_CFLAGS}], IF_FALSE: [ DEBUG_PREFIX_CFLAGS= ] ) fi # -gdwarf-4 and -gdwarf-aranges were introduced in clang 5.0 GDWARF_FLAGS="-gdwarf-4 -gdwarf-aranges" FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${GDWARF_FLAGS}], IF_FALSE: [GDWARF_FLAGS=""]) CFLAGS_DEBUG_SYMBOLS="-g ${GDWARF_FLAGS}" ASFLAGS_DEBUG_SYMBOLS="-g" elif test "x$TOOLCHAIN_TYPE" = xxlc; then CFLAGS_DEBUG_SYMBOLS="-g1" elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then CFLAGS_DEBUG_SYMBOLS="-Z7" fi if test "x$DEBUG_PREFIX_CFLAGS" != x; then CFLAGS_DEBUG_SYMBOLS="$CFLAGS_DEBUG_SYMBOLS $DEBUG_PREFIX_CFLAGS" ASFLAGS_DEBUG_SYMBOLS="$ASFLAGS_DEBUG_SYMBOLS $DEBUG_PREFIX_CFLAGS" fi AC_SUBST(CFLAGS_DEBUG_SYMBOLS) AC_SUBST(ASFLAGS_DEBUG_SYMBOLS) ]) AC_DEFUN([FLAGS_SETUP_WARNINGS], [ # Set default value. if test "x$TOOLCHAIN_TYPE" != xxlc; then WARNINGS_AS_ERRORS_DEFAULT=true else WARNINGS_AS_ERRORS_DEFAULT=false fi UTIL_ARG_ENABLE(NAME: warnings-as-errors, DEFAULT: $WARNINGS_AS_ERRORS_DEFAULT, RESULT: WARNINGS_AS_ERRORS, DEFAULT_DESC: [auto], DESC: [consider native warnings to be an error]) AC_SUBST(WARNINGS_AS_ERRORS) case "${TOOLCHAIN_TYPE}" in microsoft) DISABLE_WARNING_PREFIX="-wd" BUILD_CC_DISABLE_WARNING_PREFIX="-wd" CFLAGS_WARNINGS_ARE_ERRORS="-WX" WARNINGS_ENABLE_ALL="-W3" DISABLED_WARNINGS="4800 5105" ;; gcc) DISABLE_WARNING_PREFIX="-Wno-" BUILD_CC_DISABLE_WARNING_PREFIX="-Wno-" CFLAGS_WARNINGS_ARE_ERRORS="-Werror" # Additional warnings that are not activated by -Wall and -Wextra WARNINGS_ENABLE_ADDITIONAL="-Wpointer-arith -Wsign-compare \ -Wunused-function -Wundef -Wunused-value -Wreturn-type \ -Wtrampolines" WARNINGS_ENABLE_ADDITIONAL_CXX="-Woverloaded-virtual -Wreorder" WARNINGS_ENABLE_ALL_CFLAGS="-Wall -Wextra -Wformat=2 $WARNINGS_ENABLE_ADDITIONAL WARNINGS_ENABLE_ALL_CXXFLAGS="$WARNINGS_ENABLE_ALL_CFLAGS $WARNINGS_ENABLE_ADDIT DISABLED_WARNINGS="unused-parameter unused" ;; clang) DISABLE_WARNING_PREFIX="-Wno-" BUILD_CC_DISABLE_WARNING_PREFIX="-Wno-" CFLAGS_WARNINGS_ARE_ERRORS="-Werror" # Additional warnings that are not activated by -Wall and -Wextra WARNINGS_ENABLE_ADDITIONAL="-Wpointer-arith -Wsign-compare -Wreorder \ -Wunused-function -Wundef -Wunused-value -Woverloaded-virtual" WARNINGS_ENABLE_ALL="-Wall -Wextra -Wformat=2 $WARNINGS_ENABLE_ADDITIONAL" DISABLED_WARNINGS="unknown-warning-option unused-parameter unused" ;; xlc) DISABLE_WARNING_PREFIX="-Wno-" CFLAGS_WARNINGS_ARE_ERRORS="-qhalt=w" # Possibly a better subset than "all" is "lan:trx:ret:zea:cmp:ret" WARNINGS_ENABLE_ALL="-qinfo=all -qformat=all" DISABLED_WARNINGS="" ;; esac AC_SUBST(DISABLE_WARNING_PREFIX) AC_SUBST(BUILD_CC_DISABLE_WARNING_PREFIX) AC_SUBST(CFLAGS_WARNINGS_ARE_ERRORS) AC_SUBST(DISABLED_WARNINGS) AC_SUBST(DISABLED_WARNINGS_C) AC_SUBST(DISABLED_WARNINGS_CXX) ]) AC_DEFUN([FLAGS_SETUP_QUALITY_CHECKS], [ # bounds, memory and behavior checking options if test "x$TOOLCHAIN_TYPE" = xgcc; then case $DEBUG_LEVEL in release ) # no adjustment ;; fastdebug ) # no adjustment ;; slowdebug ) # FIXME: By adding this to C(XX)FLAGS_DEBUG_OPTIONS/JVM_CFLAGS_SYMBOLS it # gets added conditionally on whether we produce debug symbols or not. # This is most likely not really correct. # Add runtime stack smashing and undefined behavior checks. CFLAGS_DEBUG_OPTIONS="-fstack-protector-all --param ssp-buffer-size=1" CXXFLAGS_DEBUG_OPTIONS="-fstack-protector-all --param ssp-buffer-size=1" JVM_CFLAGS_SYMBOLS="$JVM_CFLAGS_SYMBOLS -fstack-protector-all --param ssp-buffer ;; esac fi ]) AC_DEFUN([FLAGS_SETUP_OPTIMIZATION], [ if test "x$TOOLCHAIN_TYPE" = xgcc; then C_O_FLAG_HIGHEST_JVM="-O3" C_O_FLAG_HIGHEST="-O3" C_O_FLAG_HI="-O3" C_O_FLAG_NORM="-O2" C_O_FLAG_SIZE="-Os" C_O_FLAG_DEBUG="-O0" C_O_FLAG_DEBUG_JVM="-O0" C_O_FLAG_NONE="-O0" # -D_FORTIFY_SOURCE=2 hardening option needs optimization (at least -O1) enabled # set for lower O-levels -U_FORTIFY_SOURCE to overwrite previous settings if test "x$OPENJDK_TARGET_OS" = xlinux -a "x$DEBUG_LEVEL" = "xfastdebug"; then DISABLE_FORTIFY_CFLAGS="-U_FORTIFY_SOURCE" # ASan doesn't work well with _FORTIFY_SOURCE # See https://github.com/google/sanitizers/wiki/AddressSanitizer#faq if test "x$ASAN_ENABLED" = xyes; then ENABLE_FORTIFY_CFLAGS="${DISABLE_FORTIFY_CFLAGS}" else ENABLE_FORTIFY_CFLAGS="-D_FORTIFY_SOURCE=2" fi C_O_FLAG_HIGHEST_JVM="${C_O_FLAG_HIGHEST_JVM} ${ENABLE_FORTIFY_CFLAGS}" C_O_FLAG_HIGHEST="${C_O_FLAG_HIGHEST} ${ENABLE_FORTIFY_CFLAGS}" C_O_FLAG_HI="${C_O_FLAG_HI} ${ENABLE_FORTIFY_CFLAGS}" C_O_FLAG_NORM="${C_O_FLAG_NORM} ${ENABLE_FORTIFY_CFLAGS}" C_O_FLAG_SIZE="${C_O_FLAG_SIZE} ${DISABLE_FORTIFY_CFLAGS}" C_O_FLAG_DEBUG="${C_O_FLAG_DEBUG} ${DISABLE_FORTIFY_CFLAGS}" C_O_FLAG_DEBUG_JVM="${C_O_FLAG_DEBUG_JVM} ${DISABLE_FORTIFY_CFLAGS}" C_O_FLAG_NONE="${C_O_FLAG_NONE} ${DISABLE_FORTIFY_CFLAGS}" fi elif test "x$TOOLCHAIN_TYPE" = xclang; then C_O_FLAG_HIGHEST_JVM="-O3" C_O_FLAG_HIGHEST="-O3" C_O_FLAG_HI="-O3" C_O_FLAG_NORM="-O2" C_O_FLAG_DEBUG_JVM="-O0" C_O_FLAG_SIZE="-Os" C_O_FLAG_DEBUG="-O0" C_O_FLAG_NONE="-O0" elif test "x$TOOLCHAIN_TYPE" = xxlc; then C_O_FLAG_HIGHEST_JVM="-O3 -qhot=level=1 -qinline -qinlglue" C_O_FLAG_HIGHEST="-O3 -qhot=level=1 -qinline -qinlglue" C_O_FLAG_HI="-O3 -qinline -qinlglue" C_O_FLAG_NORM="-O2" C_O_FLAG_DEBUG="-qnoopt" # FIXME: Value below not verified. C_O_FLAG_DEBUG_JVM="" C_O_FLAG_NONE="-qnoopt" elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then C_O_FLAG_HIGHEST_JVM="-O2 -Oy-" C_O_FLAG_HIGHEST="-O2" C_O_FLAG_HI="-O1" C_O_FLAG_NORM="-O1" C_O_FLAG_DEBUG="-Od" C_O_FLAG_DEBUG_JVM="" C_O_FLAG_NONE="-Od" C_O_FLAG_SIZE="-Os" fi # Now copy to C++ flags CXX_O_FLAG_HIGHEST_JVM="$C_O_FLAG_HIGHEST_JVM" CXX_O_FLAG_HIGHEST="$C_O_FLAG_HIGHEST" CXX_O_FLAG_HI="$C_O_FLAG_HI" CXX_O_FLAG_NORM="$C_O_FLAG_NORM" CXX_O_FLAG_DEBUG="$C_O_FLAG_DEBUG" CXX_O_FLAG_DEBUG_JVM="$C_O_FLAG_DEBUG_JVM" CXX_O_FLAG_NONE="$C_O_FLAG_NONE" CXX_O_FLAG_SIZE="$C_O_FLAG_SIZE" # Adjust optimization flags according to debug level. case $DEBUG_LEVEL in release ) # no adjustment ;; fastdebug ) # Not quite so much optimization C_O_FLAG_HI="$C_O_FLAG_NORM" CXX_O_FLAG_HI="$CXX_O_FLAG_NORM" ;; slowdebug ) # Disable optimization C_O_FLAG_HIGHEST_JVM="$C_O_FLAG_DEBUG_JVM" C_O_FLAG_HIGHEST="$C_O_FLAG_DEBUG" C_O_FLAG_HI="$C_O_FLAG_DEBUG" C_O_FLAG_NORM="$C_O_FLAG_DEBUG" C_O_FLAG_SIZE="$C_O_FLAG_DEBUG" CXX_O_FLAG_HIGHEST_JVM="$CXX_O_FLAG_DEBUG_JVM" CXX_O_FLAG_HIGHEST="$CXX_O_FLAG_DEBUG" CXX_O_FLAG_HI="$CXX_O_FLAG_DEBUG" CXX_O_FLAG_NORM="$CXX_O_FLAG_DEBUG" CXX_O_FLAG_SIZE="$CXX_O_FLAG_DEBUG" ;; esac AC_SUBST(C_O_FLAG_HIGHEST_JVM) AC_SUBST(C_O_FLAG_HIGHEST) AC_SUBST(C_O_FLAG_HI) AC_SUBST(C_O_FLAG_NORM) AC_SUBST(C_O_FLAG_NONE) AC_SUBST(C_O_FLAG_SIZE) AC_SUBST(CXX_O_FLAG_HIGHEST_JVM) AC_SUBST(CXX_O_FLAG_HIGHEST) AC_SUBST(CXX_O_FLAG_HI) AC_SUBST(CXX_O_FLAG_NORM) AC_SUBST(CXX_O_FLAG_NONE) AC_SUBST(CXX_O_FLAG_SIZE) ]) AC_DEFUN([FLAGS_SETUP_CFLAGS], [ ### CFLAGS FLAGS_SETUP_CFLAGS_HELPER FLAGS_OS=$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_CPU_LEGACY_LIB=$OPENJDK_TARGET_CPU_LEGACY_LIB FLAGS_SETUP_CFLAGS_CPU_DEP([TARGET]) # Repeat the check for the BUILD_CC and BUILD_CXX. Need to also reset CFLAGS # since any target specific flags will likely not work with the build compiler. CC_OLD="$CC" CXX_OLD="$CXX" CFLAGS_OLD="$CFLAGS" CXXFLAGS_OLD="$CXXFLAGS" CC="$BUILD_CC" CXX="$BUILD_CXX" CFLAGS="" CXXFLAGS="" FLAGS_OS=$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_CPU_LEGACY_LIB=$OPENJDK_BUILD_CPU_LEGACY_LIB FLAGS_SETUP_CFLAGS_CPU_DEP([BUILD], [OPENJDK_BUILD_], [BUILD_]) CC="$CC_OLD" CXX="$CXX_OLD" CFLAGS="$CFLAGS_OLD" CXXFLAGS="$CXXFLAGS_OLD" ]) ################################################################################ # platform independent AC_DEFUN([FLAGS_SETUP_CFLAGS_HELPER], [ #### OS DEFINES, these should be independent on toolchain if test "x$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$OPENJDK_TARGET_OS" = xmacosx; then CFLAGS_OS_DEF_JVM="-D_ALLBSD_SOURCE -D_DARWIN_C_SOURCE -D_XOPEN_SOURCE" CFLAGS_OS_DEF_JDK="-D_ALLBSD_SOURCE -D_DARWIN_UNLIMITED_SELECT" elif test "x$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 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_CONSTAN # 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_S -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$DEBUG_LEVEL" = xrelease; then DEBUG_CFLAGS_JDK="-DNDEBUG" else DEBUG_CFLAGS_JDK="-DDEBUG" if test "x$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$DEBUG_LEVEL" != xrelease; then DEBUG_OPTIONS_FLAGS_JDK="$CFLAGS_DEBUG_OPTIONS" DEBUG_SYMBOLS_CFLAGS_JDK="$CFLAGS_DEBUG_SYMBOLS" fi #### TOOLCHAIN DEFINES if test "x$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" = xxlc; then ALWAYS_DEFINES_JVM="-D_REENTRANT" ALWAYS_DEFINES_JDK="-D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE -DSTDC" elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then # Access APIs for Windows 8 and above # see https://docs.microsoft.com/en-us/cpp/porting/modifying-winver-and-win32-winn ALWAYS_DEFINES_JDK="-DWIN32_LEAN_AND_MEAN -D_WIN32_WINNT=0x0602 \ -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_DEPRECATE -DWIN32 -DIAL" ALWAYS_DEFINES_JVM="-DNOMINMAX -DWIN32_LEAN_AND_MEAN -D_WIN32_WINNT=0x0602 \ -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_DEPRECATE \ -D_WINSOCK_DEPRECATED_NO_WARNINGS" fi ############################################################################### # # # CFLAGS BASIC if test "x$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="$TOOLCHAIN_CFLAGS_JVM -fcheck-new -fstack-protector" TOOLCHAIN_CFLAGS_JDK="-pipe -fstack-protector" # reduce lib size on linux in link step, this needs also special compile flags # do this on s390x also for libjvm (where serviceability agent is not supported) if test "x$ENABLE_LINKTIME_GC" = xtrue; then TOOLCHAIN_CFLAGS_JDK="$TOOLCHAIN_CFLAGS_JDK -ffunction-sections -fdata-sections" if test "x$OPENJDK_TARGET_CPU" = xs390x; then TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -ffunction-sections -fdata-sections" fi fi # technically NOT for CXX (but since this gives *worse* performance, use # no-strict-aliasing everywhere!) TOOLCHAIN_CFLAGS_JDK_CONLY="-fno-strict-aliasing" elif test "x$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="$TOOLCHAIN_CFLAGS_JVM -flimit-debug-info" # In principle the stack alignment below is cpu- and ABI-dependent and # should agree with values of StackAlignmentInBytes in various # src/hotspot/cpu/*/globalDefinitions_*.hpp files, but this value currently # works for all platforms. TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -mno-omit-leaf-frame-pointer -mstack if test "x$OPENJDK_TARGET_OS" = xlinux; then if test "x$DEBUG_LEVEL" = xrelease; then # Clang does not inline as much as GCC does for functions with "inline" keyword by default. # This causes noticeable slowdown in pause time for G1, and possibly in other areas. # Increasing the inline hint threshold avoids the slowdown for Clang-built JVM. TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -mllvm -inlinehint-threshold=100000" fi TOOLCHAIN_CFLAGS_JDK="-pipe" TOOLCHAIN_CFLAGS_JDK_CONLY="-fno-strict-aliasing" # technically NOT for CXX fi elif test "x$TOOLCHAIN_TYPE" = xxlc; then # Suggested additions: -qsrcmsg to get improved error reporting # set -qtbtable=full for a better traceback table/better stacks in hs_err when xlc16 is used TOOLCHAIN_CFLAGS_JDK="-qtbtable=full -qchars=signed -qfullpath -qsaveopt -qstack TOOLCHAIN_CFLAGS_JVM="-qtbtable=full -qtune=balanced -fno-exceptions \ -qalias=noansi -qstrict -qtls=default -qnortti -qnoeh -qignerrno -qstackprotect" elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then TOOLCHAIN_CFLAGS_JVM="-nologo -MD -Zc:preprocessor -Zc:strictStrings -MP" TOOLCHAIN_CFLAGS_JDK="-nologo -MD -Zc:preprocessor -Zc:strictStrings -Zc:wchar_t fi # CFLAGS C language level for JDK sources (hotspot only uses C++) if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang || test "x$TOOLCHAIN_T LANGSTD_CFLAGS="-std=c11" elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then LANGSTD_CFLAGS="-std:c11" fi TOOLCHAIN_CFLAGS_JDK_CONLY="$LANGSTD_CFLAGS $TOOLCHAIN_CFLAGS_JDK_CONLY" # CXXFLAGS C++ language level for all of JDK, including Hotspot. if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang || test "x$TOOLCHAIN_T LANGSTD_CXXFLAGS="-std=c++14" elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then LANGSTD_CXXFLAGS="-std:c++14" else AC_MSG_ERROR([Don't know how to enable C++14 for this toolchain]) fi TOOLCHAIN_CFLAGS_JDK_CXXONLY="$TOOLCHAIN_CFLAGS_JDK_CXXONLY $LANGSTD_CXXFLAGS" TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM $LANGSTD_CXXFLAGS" ADLC_LANGSTD_CXXFLAGS="$LANGSTD_CXXFLAGS" # CFLAGS WARNINGS STUFF # Set JVM_CFLAGS warning handling if test "x$TOOLCHAIN_TYPE" = xgcc; then WARNING_CFLAGS_JDK_CONLY="$WARNINGS_ENABLE_ALL_CFLAGS" WARNING_CFLAGS_JDK_CXXONLY="$WARNINGS_ENABLE_ALL_CXXFLAGS" WARNING_CFLAGS_JVM="$WARNINGS_ENABLE_ALL_CXXFLAGS" elif test "x$TOOLCHAIN_TYPE" = xclang; then WARNING_CFLAGS="$WARNINGS_ENABLE_ALL" elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then WARNING_CFLAGS="$WARNINGS_ENABLE_ALL" elif test "x$TOOLCHAIN_TYPE" = xxlc; then WARNING_CFLAGS="" # currently left empty fi # Set some additional per-OS defines. # Additional macosx handling if test "x$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=$MACOSX_VERSION_MAX_NODOTS" fi fi OS_CFLAGS="$OS_CFLAGS -DLIBC=$OPENJDK_TARGET_LIBC" if test "x$OPENJDK_TARGET_LIBC" = xmusl; then OS_CFLAGS="$OS_CFLAGS -DMUSL_LIBC" fi # Where does this really belong?? if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then PICFLAG="-fPIC" PIEFLAG="-fPIE" elif test "x$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 slower, and 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. # # Since large TOC causes perf. overhead, only pay it where we must. Currently this is # for all libjvm variants (both gtest and normal) but no other binaries. So, build # libjvm with -qpic=large and link with -bbigtoc. JVM_PICFLAG="-qpic=large" JDK_PICFLAG="-qpic" elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then PICFLAG="" fi if test "x$TOOLCHAIN_TYPE" != xxlc; then JVM_PICFLAG="$PICFLAG" JDK_PICFLAG="$PICFLAG" fi 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 # Extra flags needed when building optional static versions of certain # JDK libraries. STATIC_LIBS_CFLAGS="-DSTATIC_BUILD=1" if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then STATIC_LIBS_CFLAGS="$STATIC_LIBS_CFLAGS -ffunction-sections -fdata-sections \ -DJNIEXPORT='__attribute__((visibility(\"hidden\")))'" else STATIC_LIBS_CFLAGS="$STATIC_LIBS_CFLAGS -DJNIEXPORT=" fi if test "x$TOOLCHAIN_TYPE" = xgcc; then # Disable relax-relocation to enable compatibility with older linkers RELAX_RELOCATIONS_FLAG="-Xassembler -mrelax-relocations=no" FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${RELAX_RELOCATIONS_FLAG}], IF_TRUE: [STATIC_LIBS_CFLAGS="$STATIC_LIBS_CFLAGS ${RELAX_RELOCATIONS_FLAG}"]) fi AC_SUBST(STATIC_LIBS_CFLAGS) ]) ################################################################################ # $1 - Either BUILD or TARGET to pick the correct OS/CPU variables to check # conditionals against. # $2 - Optional prefix for each variable defined. # $3 - Optional prefix for compiler variables (either BUILD_ or nothing). AC_DEFUN([FLAGS_SETUP_CFLAGS_CPU_DEP], [ #### CPU DEFINES, these should (in theory) be independent on toolchain # Setup target CPU # Setup endianness if test "x$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 && test "x$FLAGS_OS" != xaix; then # xlc on AIX defines _LP64=1 by default and issues a warning if we redefine it. $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_LP64=1" $1_DEFINES_CPU_JVM="${$1_DEFINES_CPU_JVM} -D_LP64=1" fi # toolchain dependent, per-cpu if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then if test "x$FLAGS_CPU" = xaarch64; then $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_ARM64_ -Darm64" elif test "x$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 AC_MSG_CHECKING([if $1 is x86]) if test "x$FLAGS_CPU" = xx86; then AC_MSG_RESULT([yes]) AC_MSG_CHECKING([if control flow protection is enabled by additional compiler flags]) if echo "${EXTRA_CFLAGS}${EXTRA_CXXFLAGS}${EXTRA_ASFLAGS}" | ${GREP} -q 'fcf-protectio # cf-protection requires CMOV and thus i686 $1_CFLAGS_CPU="-march=i686" AC_MSG_RESULT([yes, forcing ${$1_CFLAGS_CPU}]) else # Force compatibility with i586 on 32 bit intel platforms. $1_CFLAGS_CPU="-march=i586" AC_MSG_RESULT([no, forcing ${$1_CFLAGS_CPU}]) fi else AC_MSG_RESULT([no]) fi fi if test "x$TOOLCHAIN_TYPE" = xgcc; then if test "x$FLAGS_CPU" = xaarch64; then # -Wno-psabi to get rid of annoying "note: parameter passing for argument of type '<type> changed $1_CFLAGS_CPU="-Wno-psabi" elif test "x$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_FLA $1_CFLAGS_CPU_JVM="-DARM" elif test "x$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 $1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -mminimal-toc -mcpu=powerpc64 -mtune=pow elif test "x$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" = 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 $1_CFLAGS_CPU_JVM="-arch:IA32" elif test "x$OPENJDK_TARGET_CPU" = xx86_64; then if test "x$DEBUG_LEVEL" != xrelease; then # NOTE: This is probably redundant; -homeparams is default on # non-release builds. $1_CFLAGS_CPU_JVM="-homeparams" fi fi fi if test "x$TOOLCHAIN_TYPE" = xgcc; then FLAGS_SETUP_GCC6_COMPILER_FLAGS($1, $3) $1_TOOLCHAIN_CFLAGS="${$1_GCC6_CFLAGS}" $1_WARNING_CFLAGS_JVM="-Wno-format-zero-length -Wtype-limits -Wuninitialized" elif test "x$TOOLCHAIN_TYPE" = xclang; then NO_DELETE_NULL_POINTER_CHECKS_CFLAG="-fno-delete-null-pointer-checks" FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_DELETE_NULL_POINTER_CHECKS_CFLAG], PREFIX: $3, IF_FALSE: [ NO_DELETE_NULL_POINTER_CHECKS_CFLAG= ] ) $1_TOOLCHAIN_CFLAGS="${NO_DELETE_NULL_POINTER_CHECKS_CFLAG}" fi if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then REPRODUCIBLE_CFLAGS="-experimental:deterministic" FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${REPRODUCIBLE_CFLAGS}], PREFIX: $3, IF_FALSE: [ REPRODUCIBLE_CFLAGS= ] ) fi # Prevent the __FILE__ macro from generating absolute paths into the built # binaries. Depending on toolchain, different mitigations are possible. # * GCC and Clang of new enough versions have -fmacro-prefix-map. # * For most other toolchains, supplying all source files and -I flags as # relative paths fixes the issue. FILE_MACRO_CFLAGS= if test "x$ALLOW_ABSOLUTE_PATHS_IN_OUTPUT" = "xfalse"; then if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then # Check if compiler supports -fmacro-prefix-map. If so, use that to make # the __FILE__ macro resolve to paths relative to the workspace root. workspace_root_trailing_slash="${WORKSPACE_ROOT%/}/" FILE_MACRO_CFLAGS="-fmacro-prefix-map=${workspace_root_trailing_slash}=" FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${FILE_MACRO_CFLAGS}], PREFIX: $3, IF_FALSE: [ FILE_MACRO_CFLAGS= ] ) elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then # There is a known issue with the pathmap if the mapping is made to the # empty string. Add a minimal string "s" as prefix to work around this. # PATHMAP_FLAGS is also added to LDFLAGS in flags-ldflags.m4. PATHMAP_FLAGS="-pathmap:${WORKSPACE_ROOT}=s" FILE_MACRO_CFLAGS="$PATHMAP_FLAGS" FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${FILE_MACRO_CFLAGS}], PREFIX: $3, IF_FALSE: [ PATHMAP_FLAGS= FILE_MACRO_CFLAGS= ] ) fi AC_MSG_CHECKING([how to prevent absolute paths in output]) if test "x$FILE_MACRO_CFLAGS" != x; then AC_MSG_RESULT([using compiler options]) else AC_MSG_RESULT([using relative paths]) fi fi AC_SUBST(FILE_MACRO_CFLAGS) FLAGS_SETUP_BRANCH_PROTECTION # EXPORT to API CFLAGS_JVM_COMMON="$ALWAYS_CFLAGS_JVM $ALWAYS_DEFINES_JVM \ $TOOLCHAIN_CFLAGS_JVM ${$1_TOOLCHAIN_CFLAGS_JVM} \ $OS_CFLAGS $OS_CFLAGS_JVM $CFLAGS_OS_DEF_JVM $DEBUG_CFLAGS_JVM \ $WARNING_CFLAGS $WARNING_CFLAGS_JVM $JVM_PICFLAG $FILE_MACRO_CFLAGS \ $REPRODUCIBLE_CFLAGS $BRANCH_PROTECTION_CFLAGS" CFLAGS_JDK_COMMON="$ALWAYS_CFLAGS_JDK $ALWAYS_DEFINES_JDK $TOOLCHAIN_CFLAGS_JDK $OS_CFLAGS $CFLAGS_OS_DEF_JDK $DEBUG_CFLAGS_JDK $DEBUG_OPTIONS_FLAGS_JDK \ $WARNING_CFLAGS $WARNING_CFLAGS_JDK $DEBUG_SYMBOLS_CFLAGS_JDK \ $FILE_MACRO_CFLAGS $REPRODUCIBLE_CFLAGS $BRANCH_PROTECTION_CFLAGS" # Use ${$2EXTRA_CFLAGS} to block EXTRA_CFLAGS to be added to build flags. # (Currently we don't have any OPENJDK_BUILD_EXTRA_CFLAGS, but that might # change in the future.) CFLAGS_JDK_COMMON_CONLY="$TOOLCHAIN_CFLAGS_JDK_CONLY \ $WARNING_CFLAGS_JDK_CONLY ${$2EXTRA_CFLAGS}" CFLAGS_JDK_COMMON_CXXONLY="$ALWAYS_DEFINES_JDK_CXXONLY \ $TOOLCHAIN_CFLAGS_JDK_CXXONLY \ ${$1_TOOLCHAIN_CFLAGS_JDK_CXXONLY} \ $WARNING_CFLAGS_JDK_CXXONLY ${$2EXTRA_CXXFLAGS}" $1_CFLAGS_JVM="${$1_DEFINES_CPU_JVM} ${$1_CFLAGS_CPU} ${$1_CFLAGS_CPU_JVM} ${$1_ $1_CFLAGS_JDK="${$1_DEFINES_CPU_JDK} ${$1_CFLAGS_CPU} ${$1_CFLAGS_CPU_JDK} ${$1_ $2JVM_CFLAGS="$CFLAGS_JVM_COMMON ${$1_CFLAGS_JVM} ${$2EXTRA_CXXFLAGS}" $2CFLAGS_JDKEXE="$CFLAGS_JDK_COMMON $CFLAGS_JDK_COMMON_CONLY ${$1_CFLAGS_JDK} $P $2CXXFLAGS_JDKEXE="$CFLAGS_JDK_COMMON $CFLAGS_JDK_COMMON_CXXONLY ${$1_CFLAGS_JDK $2CFLAGS_JDKLIB="$CFLAGS_JDK_COMMON $CFLAGS_JDK_COMMON_CONLY ${$1_CFLAGS_JDK} \ $JDK_PICFLAG ${$1_CFLAGS_CPU_JDK_LIBONLY}" $2CXXFLAGS_JDKLIB="$CFLAGS_JDK_COMMON $CFLAGS_JDK_COMMON_CXXONLY ${$1_CFLAGS_JDK $JDK_PICFLAG ${$1_CFLAGS_CPU_JDK_LIBONLY}" AC_SUBST($2JVM_CFLAGS) AC_SUBST($2CFLAGS_JDKLIB) AC_SUBST($2CFLAGS_JDKEXE) AC_SUBST($2CXXFLAGS_JDKLIB) AC_SUBST($2CXXFLAGS_JDKEXE) AC_SUBST($2ADLC_LANGSTD_CXXFLAGS) COMPILER_FP_CONTRACT_OFF_FLAG="-ffp-contract=off" # Check that the compiler supports -ffp-contract=off flag # Set FDLIBM_CFLAGS to -ffp-contract=off if it does. Empty # otherwise. # These flags are required for GCC-based builds of # fdlibm with optimization without losing precision. # Notably, -ffp-contract=off needs to be added for GCC >= 4.6. if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${COMPILER_FP_CONTRACT_OFF_FLAG}], PREFIX: $3, IF_TRUE: [$2FDLIBM_CFLAGS=${COMPILER_FP_CONTRACT_OFF_FLAG}], IF_FALSE: [$2FDLIBM_CFLAGS=""]) fi AC_SUBST($2FDLIBM_CFLAGS) ]) # FLAGS_SETUP_GCC6_COMPILER_FLAGS([PREFIX]) # Arguments: # $1 - Prefix for each variable defined. # $2 - Prefix for compiler variables (either BUILD_ or nothing). AC_DEFUN([FLAGS_SETUP_GCC6_COMPILER_FLAGS], [ # These flags are required for GCC 6 builds as undefined behavior in OpenJDK code # runs afoul of the more aggressive versions of these optimizations. # Notably, value range propagation now assumes that the this pointer of C++ # member functions is non-null. NO_DELETE_NULL_POINTER_CHECKS_CFLAG="-fno-delete-null-pointer-checks" FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_DELETE_NULL_POINTER_CHECKS_CFLAG], PREFIX: $2, IF_FALSE: [NO_DELETE_NULL_POINTER_CHECKS_CFLAG=""]) NO_LIFETIME_DSE_CFLAG="-fno-lifetime-dse" FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_LIFETIME_DSE_CFLAG], PREFIX: $2, IF_FALSE: [NO_LIFETIME_DSE_CFLAG=""]) $1_GCC6_CFLAGS="${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} ${NO_LIFETIME_DSE_CFLAG}" ]) AC_DEFUN_ONCE([FLAGS_SETUP_BRANCH_PROTECTION], [ # Is branch protection available? BRANCH_PROTECTION_AVAILABLE=false BRANCH_PROTECTION_FLAG="-mbranch-protection=standard" if test "x$OPENJDK_TARGET_CPU" = xaarch64; then if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${BRANCH_PROTECTION_FLAG}], IF_TRUE: [BRANCH_PROTECTION_AVAILABLE=true]) fi fi BRANCH_PROTECTION_CFLAGS="" UTIL_ARG_ENABLE(NAME: branch-protection, DEFAULT: false, RESULT: USE_BRANCH_PROTECTION, AVAILABLE: $BRANCH_PROTECTION_AVAILABLE, DESC: [enable branch protection when compiling C/C++], IF_ENABLED: [ BRANCH_PROTECTION_CFLAGS=${BRANCH_PROTECTION_FLAG}]) AC_SUBST(BRANCH_PROTECTION_CFLAGS) ]) ¤ Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.0.41Bemerkung: Wie Sie bei der Firma Beratungs- und Dienstleistungen beauftragen können ¤*Eine klare Vorstellung vom Zielzustand |
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