jdk8-mips64-public: common/autoconf/flags.m4@a8da94d779b3

1 #

     2 # Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.

     3 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

4 #

     5 # This code is free software; you can redistribute it and/or modify it

     6 # under the terms of the GNU General Public License version 2 only, as

     7 # published by the Free Software Foundation.  Oracle designates this

     8 # particular file as subject to the "Classpath" exception as provided

     9 # by Oracle in the LICENSE file that accompanied this code.

    10 #

    11 # This code is distributed in the hope that it will be useful, but WITHOUT

    12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14 # version 2 for more details (a copy is included in the LICENSE file that

    15 # accompanied this code).

    16 #

    17 # You should have received a copy of the GNU General Public License version

    18 # 2 along with this work; if not, write to the Free Software Foundation,

    19 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20 #

    21 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22 # or visit www.oracle.com if you need additional information or have any

    23 # questions.

    24 #

    26 AC_DEFUN_ONCE([FLAGS_SETUP_INIT_FLAGS],

    27 [

    28   # Option used to tell the compiler whether to create 32- or 64-bit executables

    29   if test "x$TOOLCHAIN_TYPE" = xxlc; then

    30     COMPILER_TARGET_BITS_FLAG="-q"

    31   else

    32     COMPILER_TARGET_BITS_FLAG="-m"

    33   fi

    34   AC_SUBST(COMPILER_TARGET_BITS_FLAG)

    36   # FIXME: figure out if we should select AR flags depending on OS or toolchain.

    37   if test "x$OPENJDK_TARGET_OS" = xmacosx; then

    38     ARFLAGS="-r"

    39   elif test "x$OPENJDK_TARGET_OS" = xaix; then

    40     ARFLAGS="-X64"

    41   elif test "x$OPENJDK_TARGET_OS" = xwindows; then

    42     # lib.exe is used as AR to create static libraries.

    43     ARFLAGS="-nologo -NODEFAULTLIB:MSVCRT"

    44   else

    45     ARFLAGS=""

    46   fi

    47   AC_SUBST(ARFLAGS)

    49   ## Setup strip.

    50   # FIXME: should this really be per platform, or should it be per toolchain type?

    51   # strip is not provided by clang or solstudio; so guessing platform makes most sense.

    52   # FIXME: we should really only export STRIPFLAGS from here, not POST_STRIP_CMD.

    53   if test "x$OPENJDK_TARGET_OS" = xlinux; then

    54     STRIPFLAGS="-g"

    55   elif test "x$OPENJDK_TARGET_OS" = xsolaris; then

    56     STRIPFLAGS="-x"

    57   elif test "x$OPENJDK_TARGET_OS" = xmacosx; then

    58     STRIPFLAGS="-S"

    59   elif test "x$OPENJDK_TARGET_OS" = xaix; then

    60     STRIPFLAGS="-X32_64"

    61   fi

    63   if test "x$OPENJDK_TARGET_OS" != xwindows; then

    64     POST_STRIP_CMD="$STRIP $STRIPFLAGS"

    65   fi

    66   AC_SUBST(POST_STRIP_CMD)

    68   if test "x$OPENJDK_TARGET_OS" = xsolaris; then

    69     # FIXME: break out into MCSFLAGS

    70     POST_MCS_CMD="$MCS -d -a \"JDK $FULL_VERSION\""

    71   fi

    72   AC_SUBST(POST_MCS_CMD)

    74   if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then

    75     CC_OUT_OPTION=-Fo

    76     EXE_OUT_OPTION=-out:

    77     LD_OUT_OPTION=-out:

    78     AR_OUT_OPTION=-out:

    79   else

    80     # The option used to specify the target .o,.a or .so file.

    81     # When compiling, how to specify the to be created object file.

    82     CC_OUT_OPTION='-o$(SPACE)'

    83     # When linking, how to specify the to be created executable.

    84     EXE_OUT_OPTION='-o$(SPACE)'

    85     # When linking, how to specify the to be created dynamically linkable library.

    86     LD_OUT_OPTION='-o$(SPACE)'

    87     # When archiving, how to specify the to be create static archive for object files.

    88     AR_OUT_OPTION='rcs$(SPACE)'

    89   fi

    90   AC_SUBST(CC_OUT_OPTION)

    91   AC_SUBST(EXE_OUT_OPTION)

    92   AC_SUBST(LD_OUT_OPTION)

    93   AC_SUBST(AR_OUT_OPTION)

    95   # On Windows, we need to set RC flags.

    96   if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then

    97     RC_FLAGS="-nologo -l 0x409 -r"

    98     if test "x$VARIANT" = xOPT; then

    99       RC_FLAGS="$RC_FLAGS -d NDEBUG"

   100     fi

   102     # The version variables used to create RC_FLAGS may be overridden

   103     # in a custom configure script, or possibly the command line.

   104     # Let those variables be expanded at make time in spec.gmk.

   105     # The \$ are escaped to the shell, and the $(...) variables

   106     # are evaluated by make.

   107     RC_FLAGS="$RC_FLAGS \

   108         -d \"JDK_BUILD_ID=\$(FULL_VERSION)\" \

   109         -d \"JDK_COMPANY=\$(COMPANY_NAME)\" \

   110         -d \"JDK_COMPONENT=\$(PRODUCT_NAME) \$(JDK_RC_PLATFORM_NAME) binary\" \

   111         -d \"JDK_VER=\$(JDK_MINOR_VERSION).\$(JDK_MICRO_VERSION).\$(COOKED_JDK_UPDATE_VERSION).\$(COOKED_BUILD_NUMBER)\" \

   112         -d \"JDK_COPYRIGHT=Copyright \xA9 $COPYRIGHT_YEAR\" \

   113         -d \"JDK_NAME=\$(PRODUCT_NAME) \$(JDK_RC_PLATFORM_NAME) \$(JDK_MINOR_VERSION) \$(JDK_UPDATE_META_TAG)\" \

   114         -d \"JDK_FVER=\$(JDK_MINOR_VERSION),\$(JDK_MICRO_VERSION),\$(if \$(COOKED_JDK_UPDATE_VERSION),\$(COOKED_JDK_UPDATE_VERSION),0),\$(COOKED_BUILD_NUMBER)\""

   115   fi

   116   AC_SUBST(RC_FLAGS)

   118   if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then

   119     # FIXME: likely bug, should be CCXXFLAGS_JDK? or one for C or CXX.

   120     CCXXFLAGS="$CCXXFLAGS -nologo"

   121   fi

   123   if test "x$SYSROOT" != "x"; then

   124     if test "x$TOOLCHAIN_TYPE" = xsolstudio; then

   125       if test "x$OPENJDK_TARGET_OS" = xsolaris; then

   126         # Solaris Studio does not have a concept of sysroot. Instead we must

   127         # make sure the default include and lib dirs are appended to each

   128         # compile and link command line.

   129         SYSROOT_CFLAGS="-I$SYSROOT/usr/include"

   130         SYSROOT_LDFLAGS="-L$SYSROOT/usr/lib$OPENJDK_TARGET_CPU_ISADIR \

   131             -L$SYSROOT/lib$OPENJDK_TARGET_CPU_ISADIR \

   132             -L$SYSROOT/usr/ccs/lib$OPENJDK_TARGET_CPU_ISADIR"

   133       fi

   134     elif test "x$TOOLCHAIN_TYPE" = xgcc; then

   135       SYSROOT_CFLAGS="--sysroot=\"$SYSROOT\""

   136       SYSROOT_LDFLAGS="--sysroot=\"$SYSROOT\""

   137     elif test "x$TOOLCHAIN_TYPE" = xclang; then

   138       SYSROOT_CFLAGS="-isysroot \"$SYSROOT\""

   139       SYSROOT_LDFLAGS="-isysroot \"$SYSROOT\""

   140     fi

   141     # Propagate the sysroot args to hotspot

   142     LEGACY_EXTRA_CFLAGS="$LEGACY_EXTRA_CFLAGS $SYSROOT_CFLAGS"

   143     LEGACY_EXTRA_CXXFLAGS="$LEGACY_EXTRA_CXXFLAGS $SYSROOT_CFLAGS"

   144     LEGACY_EXTRA_LDFLAGS="$LEGACY_EXTRA_LDFLAGS $SYSROOT_LDFLAGS"

   145   fi

   146   AC_SUBST(SYSROOT_CFLAGS)

   147   AC_SUBST(SYSROOT_LDFLAGS)

   148 ])

   150 AC_DEFUN_ONCE([FLAGS_SETUP_COMPILER_FLAGS_FOR_LIBS],

   151 [

   152   ###############################################################################

   153   #

   154   # How to compile shared libraries.

   155   #

   157   if test "x$TOOLCHAIN_TYPE" = xgcc; then

   158     PICFLAG="-fPIC"

   159     PIEFLAG="-fPIE"

   160     C_FLAG_REORDER=''

   161     CXX_FLAG_REORDER=''

   163     if test "x$OPENJDK_TARGET_OS" = xmacosx; then

   164       # Linking is different on MacOSX

   165       SHARED_LIBRARY_FLAGS="-dynamiclib -compatibility_version 1.0.0 -current_version 1.0.0 $PICFLAG"

   166       SET_EXECUTABLE_ORIGIN='-Xlinker -rpath -Xlinker @loader_path/.'

   167       SET_SHARED_LIBRARY_ORIGIN="$SET_EXECUTABLE_ORIGIN"

   168       SET_SHARED_LIBRARY_NAME='-Xlinker -install_name -Xlinker @rpath/[$]1'

   169       SET_SHARED_LIBRARY_MAPFILE=''

   170     else

   171       # Default works for linux, might work on other platforms as well.

   172       SHARED_LIBRARY_FLAGS='-shared'

   173       SET_EXECUTABLE_ORIGIN='-Xlinker -rpath -Xlinker \$$$$ORIGIN[$]1'

   174       SET_SHARED_LIBRARY_ORIGIN="-Xlinker -z -Xlinker origin $SET_EXECUTABLE_ORIGIN"

   175       SET_SHARED_LIBRARY_NAME='-Xlinker -soname=[$]1'

   176       SET_SHARED_LIBRARY_MAPFILE='-Xlinker -version-script=[$]1'

   177     fi

   178   elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then

   179     PICFLAG="-KPIC"

   180     PIEFLAG=""

   181     C_FLAG_REORDER='-xF'

   182     CXX_FLAG_REORDER='-xF'

   183     SHARED_LIBRARY_FLAGS="-G"

   184     SET_EXECUTABLE_ORIGIN='-R\$$$$ORIGIN[$]1'

   185     SET_SHARED_LIBRARY_ORIGIN="$SET_EXECUTABLE_ORIGIN"

   186     SET_SHARED_LIBRARY_NAME=''

   187     SET_SHARED_LIBRARY_MAPFILE='-M[$]1'

   188   elif test "x$TOOLCHAIN_TYPE" = xxlc; then

   189     PICFLAG="-qpic=large"

   190     PIEFLAG=""

   191     C_FLAG_REORDER=''

   192     CXX_FLAG_REORDER=''

   193     SHARED_LIBRARY_FLAGS="-qmkshrobj"

   194     SET_EXECUTABLE_ORIGIN=""

   195     SET_SHARED_LIBRARY_ORIGIN=''

   196     SET_SHARED_LIBRARY_NAME=''

   197     SET_SHARED_LIBRARY_MAPFILE=''

   198   elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then

   199     PICFLAG=""

   200     PIEFLAG=""

   201     C_FLAG_REORDER=''

   202     CXX_FLAG_REORDER=''

   203     SHARED_LIBRARY_FLAGS="-LD"

   204     SET_EXECUTABLE_ORIGIN=''

   205     SET_SHARED_LIBRARY_ORIGIN=''

   206     SET_SHARED_LIBRARY_NAME=''

   207     SET_SHARED_LIBRARY_MAPFILE=''

   208   fi

   210   AC_SUBST(C_FLAG_REORDER)

   211   AC_SUBST(CXX_FLAG_REORDER)

   212   AC_SUBST(SHARED_LIBRARY_FLAGS)

   213   AC_SUBST(SET_EXECUTABLE_ORIGIN)

   214   AC_SUBST(SET_SHARED_LIBRARY_ORIGIN)

   215   AC_SUBST(SET_SHARED_LIBRARY_NAME)

   216   AC_SUBST(SET_SHARED_LIBRARY_MAPFILE)

   218   if test "x$OPENJDK_TARGET_OS" = xsolaris; then

   219     CFLAGS_JDK="${CFLAGS_JDK} -D__solaris__"

   220     CXXFLAGS_JDK="${CXXFLAGS_JDK} -D__solaris__"

   221     CFLAGS_JDKLIB_EXTRA='-xstrconst'

   222   fi

   223   # The (cross) compiler is now configured, we can now test capabilities

   224   # of the target platform.

   225 ])

   227 # Documentation on common flags used for solstudio in HIGHEST.

   228 #

   229 # WARNING: Use of OPTIMIZATION_LEVEL=HIGHEST in your Makefile needs to be

   230 #          done with care, there are some assumptions below that need to

   231 #          be understood about the use of pointers, and IEEE behavior.

   232 #

   233 # -fns: Use non-standard floating point mode (not IEEE 754)

   234 # -fsimple: Do some simplification of floating point arithmetic (not IEEE 754)

   235 # -fsingle: Use single precision floating point with 'float'

   236 # -xalias_level=basic: Assume memory references via basic pointer types do not alias

   237 #   (Source with excessing pointer casting and data access with mixed

   238 #    pointer types are not recommended)

   239 # -xbuiltin=%all: Use intrinsic or inline versions for math/std functions

   240 #   (If you expect perfect errno behavior, do not use this)

   241 # -xdepend: Loop data dependency optimizations (need -xO3 or higher)

   242 # -xrestrict: Pointer parameters to functions do not overlap

   243 #   (Similar to -xalias_level=basic usage, but less obvious sometimes.

   244 #    If you pass in multiple pointers to the same data, do not use this)

   245 # -xlibmil: Inline some library routines

   246 #   (If you expect perfect errno behavior, do not use this)

   247 # -xlibmopt: Use optimized math routines (CURRENTLY DISABLED)

   248 #   (If you expect perfect errno behavior, do not use this)

   249 #  Can cause undefined external on Solaris 8 X86 on __sincos, removing for now

   251     # FIXME: this will never happen since sparc != sparcv9, ie 32 bit, which we don't build anymore.

   252     # Bug?

   253     #if test "x$OPENJDK_TARGET_CPU" = xsparc; then

   254     #  CFLAGS_JDK="${CFLAGS_JDK} -xmemalign=4s"

   255     #  CXXFLAGS_JDK="${CXXFLAGS_JDK} -xmemalign=4s"

   256     #fi

   258 AC_DEFUN_ONCE([FLAGS_SETUP_COMPILER_FLAGS_FOR_OPTIMIZATION],

   259 [

   261   ###############################################################################

   262   #

   263   # Setup the opt flags for different compilers

   264   # and different operating systems.

   265   #

   267   # FIXME: this was indirectly the old default, but just inherited.

   268   # if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then

   269   #   C_FLAG_DEPS="-MMD -MF"

   270   # fi

   272   # Generate make dependency files

   273   if test "x$TOOLCHAIN_TYPE" = xgcc; then

   274     C_FLAG_DEPS="-MMD -MF"

   275   elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then

   276     C_FLAG_DEPS="-xMMD -xMF"

   277   elif test "x$TOOLCHAIN_TYPE" = xxlc; then

   278     C_FLAG_DEPS="-qmakedep=gcc -MF"

   279   fi

   280   CXX_FLAG_DEPS="$C_FLAG_DEPS"

   281   AC_SUBST(C_FLAG_DEPS)

   282   AC_SUBST(CXX_FLAG_DEPS)

   284   # Debug symbols

   285   #

   286   # By default don't set any specific assembler debug

   287   # info flags for toolchains unless we know they work.

   288   # See JDK-8207057.

   289   ASFLAGS_DEBUG_SYMBOLS=""

   290   if test "x$TOOLCHAIN_TYPE" = xgcc; then

   291     if test "x$OPENJDK_TARGET_CPU_BITS" = "x64" && test "x$DEBUG_LEVEL" = "xfastdebug"; then

   292       CFLAGS_DEBUG_SYMBOLS="-g1"

   293       CXXFLAGS_DEBUG_SYMBOLS="-g1"

   294     else

   295       CFLAGS_DEBUG_SYMBOLS="-g"

   296       CXXFLAGS_DEBUG_SYMBOLS="-g"

   297     fi

   298     ASFLAGS_DEBUG_SYMBOLS="-g"

   299   elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then

   300     CFLAGS_DEBUG_SYMBOLS="-g -xs"

   301     CXXFLAGS_DEBUG_SYMBOLS="-g0 -xs"

   302   elif test "x$TOOLCHAIN_TYPE" = xxlc; then

   303     CFLAGS_DEBUG_SYMBOLS="-g"

   304     CXXFLAGS_DEBUG_SYMBOLS="-g"

   305   fi

   306   AC_SUBST(ASFLAGS_DEBUG_SYMBOLS)

   307   AC_SUBST(CFLAGS_DEBUG_SYMBOLS)

   308   AC_SUBST(CXXFLAGS_DEBUG_SYMBOLS)

   310   # Optimization levels

   311   if test "x$TOOLCHAIN_TYPE" = xsolstudio; then

   312     CC_HIGHEST="$CC_HIGHEST -fns -fsimple -fsingle -xalias_level=basic -xbuiltin=%all -xdepend -xrestrict -xlibmil"

   314     if test "x$OPENJDK_TARGET_CPU_ARCH" = "xx86"; then

   315       # FIXME: seems we always set -xregs=no%frameptr; put it elsewhere more global?

   316       C_O_FLAG_HIGHEST="-xO4 -Wu,-O4~yz $CC_HIGHEST -xregs=no%frameptr"

   317       C_O_FLAG_HI="-xO4 -Wu,-O4~yz -xregs=no%frameptr"

   318       C_O_FLAG_NORM="-xO2 -Wu,-O2~yz -xregs=no%frameptr"

   319       C_O_FLAG_NONE="-xregs=no%frameptr"

   320       CXX_O_FLAG_HIGHEST="-xO4 -Qoption ube -O4~yz $CC_HIGHEST -xregs=no%frameptr"

   321       CXX_O_FLAG_HI="-xO4 -Qoption ube -O4~yz -xregs=no%frameptr"

   322       CXX_O_FLAG_NORM="-xO2 -Qoption ube -O2~yz -xregs=no%frameptr"

   323       CXX_O_FLAG_NONE="-xregs=no%frameptr"

   324       if test "x$OPENJDK_TARGET_CPU_BITS" = "x32"; then

   325         C_O_FLAG_HIGHEST="$C_O_FLAG_HIGHEST -xchip=pentium"

   326         CXX_O_FLAG_HIGHEST="$CXX_O_FLAG_HIGHEST -xchip=pentium"

   327       fi

   328     elif test "x$OPENJDK_TARGET_CPU_ARCH" = "xsparc"; then

   329       C_O_FLAG_HIGHEST="-xO4 -Wc,-Qrm-s -Wc,-Qiselect-T0 $CC_HIGHEST -xprefetch=auto,explicit -xchip=ultra"

   330       C_O_FLAG_HI="-xO4 -Wc,-Qrm-s -Wc,-Qiselect-T0"

   331       C_O_FLAG_NORM="-xO2 -Wc,-Qrm-s -Wc,-Qiselect-T0"

   332       C_O_FLAG_NONE=""

   333       CXX_O_FLAG_HIGHEST="-xO4 -Qoption cg -Qrm-s -Qoption cg -Qiselect-T0 $CC_HIGHEST -xprefetch=auto,explicit -xchip=ultra"

   334       CXX_O_FLAG_HI="-xO4 -Qoption cg -Qrm-s -Qoption cg -Qiselect-T0"

   335       CXX_O_FLAG_NORM="-xO2 -Qoption cg -Qrm-s -Qoption cg -Qiselect-T0"

   336       CXX_O_FLAG_NONE=""

   337     fi

   338   else

   339     # The remaining toolchains share opt flags between CC and CXX;

   340     # setup for C and duplicate afterwards.

   341     if test "x$TOOLCHAIN_TYPE" = xgcc; then

   342       if test "x$OPENJDK_TARGET_OS" = xmacosx; then

   343         # On MacOSX we optimize for size, something

   344         # we should do for all platforms?

   345         C_O_FLAG_HIGHEST="-Os"

   346         C_O_FLAG_HI="-Os"

   347         C_O_FLAG_NORM="-Os"

   348         C_O_FLAG_NONE=""

   349       else

   350         C_O_FLAG_HIGHEST="-O3"

   351         C_O_FLAG_HI="-O3"

   352         C_O_FLAG_NORM="-O2"

   353         C_O_FLAG_NONE="-O0"

   354       fi

   355     elif test "x$TOOLCHAIN_TYPE" = xxlc; then

   356       C_O_FLAG_HIGHEST="-O3"

   357       C_O_FLAG_HI="-O3 -qstrict"

   358       C_O_FLAG_NORM="-O2"

   359       C_O_FLAG_NONE=""

   360     elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then

   361       C_O_FLAG_HIGHEST="-O2"

   362       C_O_FLAG_HI="-O1"

   363       C_O_FLAG_NORM="-O1"

   364       C_O_FLAG_NONE="-Od"

   365     fi

   366     CXX_O_FLAG_HIGHEST="$C_O_FLAG_HIGHEST"

   367     CXX_O_FLAG_HI="$C_O_FLAG_HI"

   368     CXX_O_FLAG_NORM="$C_O_FLAG_NORM"

   369     CXX_O_FLAG_NONE="$C_O_FLAG_NONE"

   370   fi

   372   AC_SUBST(C_O_FLAG_HIGHEST)

   373   AC_SUBST(C_O_FLAG_HI)

   374   AC_SUBST(C_O_FLAG_NORM)

   375   AC_SUBST(C_O_FLAG_NONE)

   376   AC_SUBST(CXX_O_FLAG_HIGHEST)

   377   AC_SUBST(CXX_O_FLAG_HI)

   378   AC_SUBST(CXX_O_FLAG_NORM)

   379   AC_SUBST(CXX_O_FLAG_NONE)

   380 ])

   382 AC_DEFUN_ONCE([FLAGS_SETUP_COMPILER_FLAGS_FOR_JDK],

   383 [

   384   # Special extras...

   385   if test "x$TOOLCHAIN_TYPE" = xsolstudio; then

   386     if test "x$OPENJDK_TARGET_CPU_ARCH" = "xsparc"; then

   387       CFLAGS_JDKLIB_EXTRA="${CFLAGS_JDKLIB_EXTRA} -xregs=no%appl"

   388       CXXFLAGS_JDKLIB_EXTRA="${CXXFLAGS_JDKLIB_EXTRA} -xregs=no%appl"

   389     fi

   390   elif test "x$TOOLCHAIN_TYPE" = xxlc; then

   391     LDFLAGS_JDK="${LDFLAGS_JDK} -q64 -brtl -bnolibpath -liconv -bexpall"

   392     CFLAGS_JDK="${CFLAGS_JDK} -qchars=signed -q64 -qfullpath -qsaveopt"

   393     CXXFLAGS_JDK="${CXXFLAGS_JDK} -qchars=signed -q64 -qfullpath -qsaveopt"

   394   elif test "x$TOOLCHAIN_TYPE" = xgcc; then

   395     LEGACY_EXTRA_CFLAGS="$LEGACY_EXTRA_CFLAGS -fstack-protector"

   396     LEGACY_EXTRA_CXXFLAGS="$LEGACY_EXTRA_CXXFLAGS -fstack-protector"

   397     if test "x$OPENJDK_TARGET_OS" != xmacosx; then

   398       LDFLAGS_JDK="$LDFLAGS_JDK -Wl,-z,relro"

   399       LEGACY_EXTRA_LDFLAGS="$LEGACY_EXTRA_LDFLAGS -Wl,-z,relro"

   400     fi

   401     $2CXXSTD_CXXFLAG="-std=gnu++98"

   402     FLAGS_CXX_COMPILER_CHECK_ARGUMENTS([[$]$2CXXSTD_CXXFLAG -Werror],

   403                                        [], [$2CXXSTD_CXXFLAG=""])

   404     $2CXXFLAGS_JDK="${$2CXXFLAGS_JDK} ${$2CXXSTD_CXXFLAG}"

   405     $2JVM_CFLAGS="${$2JVM_CFLAGS} ${$2CXXSTD_CXXFLAG}"

   406     AC_SUBST($2CXXSTD_CXXFLAG)

   407   fi

   409   if test "x$CFLAGS" != "x${ADDED_CFLAGS}"; then

   410     AC_MSG_WARN([Ignoring CFLAGS($CFLAGS) found in environment. Use --with-extra-cflags])

   411   fi

   413   if test "x$CXXFLAGS" != "x${ADDED_CXXFLAGS}"; then

   414     AC_MSG_WARN([Ignoring CXXFLAGS($CXXFLAGS) found in environment. Use --with-extra-cxxflags])

   415   fi

   417   if test "x$LDFLAGS" != "x${ADDED_LDFLAGS}"; then

   418     AC_MSG_WARN([Ignoring LDFLAGS($LDFLAGS) found in environment. Use --with-extra-ldflags])

   419   fi

   422   if test "x$ASFLAGS" != "x"; then

   423     AC_MSG_WARN([Ignoring ASFLAGS($ASFLAGS) found in environment. Use --with-extra-asflags])

   424   fi

   426   AC_ARG_WITH(extra-cflags, [AS_HELP_STRING([--with-extra-cflags],

   427       [extra flags to be used when compiling jdk c-files])])

   429   AC_ARG_WITH(extra-cxxflags, [AS_HELP_STRING([--with-extra-cxxflags],

   430       [extra flags to be used when compiling jdk c++-files])])

   432   AC_ARG_WITH(extra-ldflags, [AS_HELP_STRING([--with-extra-ldflags],

   433       [extra flags to be used when linking jdk])])

   435   AC_ARG_WITH(extra-asflags, [AS_HELP_STRING([--with-extra-asflags],

   436       [extra flags to be passed to the assembler])])

   438   CFLAGS_JDK="${CFLAGS_JDK} $with_extra_cflags"

   439   CXXFLAGS_JDK="${CXXFLAGS_JDK} $with_extra_cxxflags"

   440   LDFLAGS_JDK="${LDFLAGS_JDK} $with_extra_ldflags"

   442   # Hotspot needs these set in their legacy form

   443   LEGACY_EXTRA_CFLAGS="$LEGACY_EXTRA_CFLAGS $with_extra_cflags"

   444   LEGACY_EXTRA_CXXFLAGS="$LEGACY_EXTRA_CXXFLAGS $with_extra_cxxflags"

   445   LEGACY_EXTRA_LDFLAGS="$LEGACY_EXTRA_LDFLAGS $with_extra_ldflags"

   446   LEGACY_EXTRA_ASFLAGS="$with_extra_asflags"

   448   AC_SUBST(LEGACY_EXTRA_CFLAGS)

   449   AC_SUBST(LEGACY_EXTRA_CXXFLAGS)

   450   AC_SUBST(LEGACY_EXTRA_LDFLAGS)

   451   AC_SUBST(LEGACY_EXTRA_ASFLAGS)

   453   ###############################################################################

   454   #

   455   # Now setup the CFLAGS and LDFLAGS for the JDK build.

   456   # Later we will also have CFLAGS and LDFLAGS for the hotspot subrepo build.

   457   #

   459   FDLIBM_CFLAGS=""

   460   # Setup compiler/platform specific flags to CFLAGS_JDK,

   461   # CXXFLAGS_JDK and CCXXFLAGS_JDK (common to C and CXX?)

   462   if test "x$TOOLCHAIN_TYPE" = xgcc; then

   463     # these options are used for both C and C++ compiles

   464     CCXXFLAGS_JDK="$CCXXFLAGS $CCXXFLAGS_JDK -Wall -Wno-parentheses -Wextra -Wno-unused -Wno-unused-parameter -Wformat=2 \

   465         -pipe -fstack-protector -D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE"

   466     case $OPENJDK_TARGET_CPU_ARCH in

   467       arm )

   468         # on arm we don't prevent gcc to omit frame pointer but do prevent strict aliasing

   469         CFLAGS_JDK="${CFLAGS_JDK} -fno-strict-aliasing"

   470         ;;

   471       ppc )

   472         # on ppc we don't prevent gcc to omit frame pointer nor strict-aliasing

   473         ;;

   474       * )

   475         CCXXFLAGS_JDK="$CCXXFLAGS_JDK -fno-omit-frame-pointer"

   476         CFLAGS_JDK="${CFLAGS_JDK} -fno-strict-aliasing"

   477         ;;

   478     esac

   479     TOOLCHAIN_CHECK_COMPILER_VERSION(6, FLAGS_SETUP_GCC6_COMPILER_FLAGS)

   481     # Check that the compiler supports -ffp-contract=off flag

   482     # Set FDLIBM_CFLAGS to -ffp-contract=off if it does.

   483     # For GCC < 4.6, on x86, x86_64 and ppc check for

   484     # -mno-fused-madd and -fno-strict-aliasing. If they exist,

   485     # use them as a substitute for -ffp-contract=off.

   486     #

   487     # These flags are required for GCC-based builds of

   488     # fdlibm with optimization without losing precision.

   489     # Notably, -ffp-contract=off needs to be added for GCC >= 4.6,

   490     #          -mno-fused-madd -fno-strict-aliasing for GCC < 4.6

   491     COMPILER_FP_CONTRACT_OFF_FLAG="-ffp-contract=off"

   492     FLAGS_CXX_COMPILER_CHECK_ARGUMENTS([[$]COMPILER_FP_CONTRACT_OFF_FLAG -Werror],

   493                                        [], [COMPILER_FP_CONTRACT_OFF_FLAG=""])

   494     if test "x$COMPILER_FP_CONTRACT_OFF_FLAG" = x; then

   495       if test "$OPENJDK_TARGET_CPU_ARCH" = "x86" ||

   496          test "$OPENJDK_TARGET_CPU_ARCH" = "x86_64" ||

   497          test "$OPENJDK_TARGET_CPU_ARCH" = "ppc"; then

   498         M_NO_FUSED_ADD_FLAG="-mno-fused-madd"

   499         FLAGS_CXX_COMPILER_CHECK_ARGUMENTS([[$]M_NO_FUSED_ADD_FLAG -Werror],

   500                                            [], [M_NO_FUSED_ADD_FLAG=""])

   501         NO_STRICT_ALIASING_FLAG="-fno-strict-aliasing"

   502         FLAGS_CXX_COMPILER_CHECK_ARGUMENTS([[$]NO_STRICT_ALIASING_FLAG -Werror],

   503                                            [], [NO_STRICT_ALIASING_FLAG=""])

   504         if test "x$M_NO_FUSED_ADD_FLAG" != "x" && test "x$NO_STRICT_ALIASING_FLAG" != "x"; then

   505           FDLIBM_CFLAGS="$M_NO_FUSED_ADD_FLAG $NO_STRICT_ALIASING_FLAG"

   506         fi

   507       fi

   508     else

   509       FDLIBM_CFLAGS="$COMPILER_FP_CONTRACT_OFF_FLAG"

   510     fi

   511   elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then

   512     CCXXFLAGS_JDK="$CCXXFLAGS $CCXXFLAGS_JDK -DTRACING -DMACRO_MEMSYS_OPS -DBREAKPTS"

   513     if test "x$OPENJDK_TARGET_CPU_ARCH" = xx86; then

   514       CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DcpuIntel -Di586 -D$OPENJDK_TARGET_CPU_LEGACY_LIB"

   515       CFLAGS_JDK="$CFLAGS_JDK -erroff=E_BAD_PRAGMA_PACK_VALUE"

   516     fi

   518     CFLAGS_JDK="$CFLAGS_JDK -xc99=%none -xCC -errshort=tags -Xa -v -mt -W0,-noglobal"

   519     CXXFLAGS_JDK="$CXXFLAGS_JDK -errtags=yes +w -mt -features=no%except -DCC_NOEX -norunpath -xnolib"

   520   elif test "x$TOOLCHAIN_TYPE" = xxlc; then

   521     CFLAGS_JDK="$CFLAGS_JDK -D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE -DSTDC"

   522     CXXFLAGS_JDK="$CXXFLAGS_JDK -D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE -DSTDC"

   523   elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then

   524     CCXXFLAGS_JDK="$CCXXFLAGS $CCXXFLAGS_JDK \

   525         -Zi -MD -Zc:wchar_t- -W3 -wd4800 \

   526         -DWIN32_LEAN_AND_MEAN \

   527         -D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE \

   528         -DWIN32 -DIAL"

   529     if test "x$OPENJDK_TARGET_CPU" = xx86_64; then

   530       CCXXFLAGS_JDK="$CCXXFLAGS_JDK -D_AMD64_ -Damd64"

   531     else

   532       CCXXFLAGS_JDK="$CCXXFLAGS_JDK -D_X86_ -Dx86"

   533     fi

   534     # If building with Visual Studio 2010, we can still use _STATIC_CPPLIB to

   535     # avoid bundling msvcpNNN.dll. Doesn't work with newer versions of visual

   536     # studio.

   537     if test "x$TOOLCHAIN_VERSION" = "x2010"; then

   538       CCXXFLAGS_JDK="$CCXXFLAGS_JDK \

   539           -D_STATIC_CPPLIB -D_DISABLE_DEPRECATE_STATIC_CPPLIB"

   540     fi

   541   fi

   542   AC_SUBST(FDLIBM_CFLAGS)

   544   ###############################################################################

   546   # Adjust flags according to debug level.

   547   case $DEBUG_LEVEL in

   548     fastdebug )

   549       CFLAGS_JDK="$CFLAGS_JDK $CFLAGS_DEBUG_SYMBOLS"

   550       CXXFLAGS_JDK="$CXXFLAGS_JDK $CXXFLAGS_DEBUG_SYMBOLS"

   551       C_O_FLAG_HI="$C_O_FLAG_NORM"

   552       C_O_FLAG_NORM="$C_O_FLAG_NORM"

   553       CXX_O_FLAG_HI="$CXX_O_FLAG_NORM"

   554       CXX_O_FLAG_NORM="$CXX_O_FLAG_NORM"

   555       JAVAC_FLAGS="$JAVAC_FLAGS -g"

   556       ;;

   557     slowdebug )

   558       CFLAGS_JDK="$CFLAGS_JDK $CFLAGS_DEBUG_SYMBOLS"

   559       CXXFLAGS_JDK="$CXXFLAGS_JDK $CXXFLAGS_DEBUG_SYMBOLS"

   560       C_O_FLAG_HI="$C_O_FLAG_NONE"

   561       C_O_FLAG_NORM="$C_O_FLAG_NONE"

   562       CXX_O_FLAG_HI="$CXX_O_FLAG_NONE"

   563       CXX_O_FLAG_NORM="$CXX_O_FLAG_NONE"

   564       JAVAC_FLAGS="$JAVAC_FLAGS -g"

   565       ;;

   566   esac

   568   # Setup LP64

   569   CCXXFLAGS_JDK="$CCXXFLAGS_JDK $ADD_LP64"

   571   # Set some common defines. These works for all compilers, but assume

   572   # -D is universally accepted.

   574   # Setup endianness

   575   if test "x$OPENJDK_TARGET_CPU_ENDIAN" = xlittle; then

   576     # The macro _LITTLE_ENDIAN needs to be defined the same to avoid the

   577     #   Sun C compiler warning message: warning: macro redefined: _LITTLE_ENDIAN

   578     #   (The Solaris X86 system defines this in file /usr/include/sys/isa_defs.h).

   579     #   Note: -Dmacro         is the same as    #define macro 1

   580     #         -Dmacro=        is the same as    #define macro

   581     if test "x$OPENJDK_TARGET_OS" = xsolaris; then

   582       CCXXFLAGS_JDK="$CCXXFLAGS_JDK -D_LITTLE_ENDIAN="

   583     else

   584       CCXXFLAGS_JDK="$CCXXFLAGS_JDK -D_LITTLE_ENDIAN"

   585     fi

   586   else

   587     # Same goes for _BIG_ENDIAN. Do we really need to set *ENDIAN on Solaris if they

   588     # are defined in the system?

   589     if test "x$OPENJDK_TARGET_OS" = xsolaris; then

   590       CCXXFLAGS_JDK="$CCXXFLAGS_JDK -D_BIG_ENDIAN="

   591     else

   592       CCXXFLAGS_JDK="$CCXXFLAGS_JDK -D_BIG_ENDIAN"

   593     fi

   594   fi

   595   if test "x$OPENJDK_TARGET_CPU" = xppc64le; then

   596     CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DABI_ELFv2"

   597   fi

   599   # Setup target OS define. Use OS target name but in upper case.

   600   OPENJDK_TARGET_OS_UPPERCASE=`$ECHO $OPENJDK_TARGET_OS | $TR 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`

   601   CCXXFLAGS_JDK="$CCXXFLAGS_JDK -D$OPENJDK_TARGET_OS_UPPERCASE"

   603   # Setup target CPU

   604   CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DARCH='\"$OPENJDK_TARGET_CPU_LEGACY\"' -D$OPENJDK_TARGET_CPU_LEGACY"

   606   # Setup debug/release defines

   607   if test "x$DEBUG_LEVEL" = xrelease; then

   608     CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DNDEBUG"

   609     if test "x$OPENJDK_TARGET_OS" = xsolaris; then

   610       CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DTRIMMED"

   611     fi

   612   else

   613     CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DDEBUG"

   614   fi

   616   # Setup release name

   617   CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DRELEASE='\"\$(RELEASE)\"'"

   620   # Set some additional per-OS defines.

   621   if test "x$OPENJDK_TARGET_OS" = xmacosx; then

   622     CCXXFLAGS_JDK="$CCXXFLAGS_JDK -D_ALLBSD_SOURCE -D_DARWIN_UNLIMITED_SELECT"

   623   elif test "x$OPENJDK_TARGET_OS" = xaix; then

   624     # FIXME: PPC64 should not be here.

   625     CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DPPC64"

   626   elif test "x$OPENJDK_TARGET_OS" = xbsd; then

   627     CCXXFLAGS_JDK="$CCXXFLAGS_JDK -D_ALLBSD_SOURCE"

   628   fi

   630   # Additional macosx handling

   631   if test "x$OPENJDK_TARGET_OS" = xmacosx; then

   632     if test "x$TOOLCHAIN_TYPE" = xgcc; then

   633       # FIXME: This needs to be exported in spec.gmk due to closed legacy code.

   634       # FIXME: clean this up, and/or move it elsewhere.

   636       # Setting these parameters makes it an error to link to macosx APIs that are

   637       # newer than the given OS version and makes the linked binaries compatible

   638       # even if built on a newer version of the OS.

   639       # The expected format is X.Y.Z

   640       MACOSX_VERSION_MIN=10.7.0

   641       AC_SUBST(MACOSX_VERSION_MIN)

   643       # The macro takes the version with no dots, ex: 1070

   644       # Let the flags variables get resolved in make for easier override on make

   645       # command line.

   646       CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DMAC_OS_X_VERSION_MAX_ALLOWED=\$(subst .,,\$(MACOSX_VERSION_MIN)) -mmacosx-version-min=\$(MACOSX_VERSION_MIN)"

   647       LDFLAGS_JDK="$LDFLAGS_JDK -mmacosx-version-min=\$(MACOSX_VERSION_MIN)"

   648     fi

   649   fi

   651   # Setup some hard coded includes

   652   CCXXFLAGS_JDK="$CCXXFLAGS_JDK \

   653       -I${JDK_OUTPUTDIR}/include \

   654       -I${JDK_OUTPUTDIR}/include/$OPENJDK_TARGET_OS \

   655       -I${JDK_TOPDIR}/src/share/javavm/export \

   656       -I${JDK_TOPDIR}/src/$OPENJDK_TARGET_OS_EXPORT_DIR/javavm/export \

   657       -I${JDK_TOPDIR}/src/share/native/common \

   658       -I${JDK_TOPDIR}/src/$OPENJDK_TARGET_OS_API_DIR/native/common"

   660   # The shared libraries are compiled using the picflag.

   661   CFLAGS_JDKLIB="$CCXXFLAGS_JDK $CFLAGS_JDK $PICFLAG $CFLAGS_JDKLIB_EXTRA"

   662   CXXFLAGS_JDKLIB="$CCXXFLAGS_JDK $CXXFLAGS_JDK $PICFLAG $CXXFLAGS_JDKLIB_EXTRA "

   664   # Executable flags

   665   CFLAGS_JDKEXE="$CCXXFLAGS_JDK $CFLAGS_JDK $PIEFLAG"

   666   CXXFLAGS_JDKEXE="$CCXXFLAGS_JDK $CXXFLAGS_JDK $PIEFLAG"

   668   AC_SUBST(CFLAGS_JDKLIB)

   669   AC_SUBST(CFLAGS_JDKEXE)

   670   AC_SUBST(CXXFLAGS_JDKLIB)

   671   AC_SUBST(CXXFLAGS_JDKEXE)

   673   # Setup LDFLAGS et al.

   674   #

   675   # Now this is odd. The JDK native libraries have to link against libjvm.so

   676   # On 32-bit machines there is normally two distinct libjvm.so:s, client and server.

   677   # Which should we link to? Are we lucky enough that the binary api to the libjvm.so library

   678   # is identical for client and server? Yes. Which is picked at runtime (client or server)?

   679   # Neither, since the chosen libjvm.so has already been loaded by the launcher, all the following

   680   # libraries will link to whatever is in memory. Yuck.

   681   #

   682   # Thus we offer the compiler to find libjvm.so first in server then in client. It works. Ugh.

   683   if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then

   684     LDFLAGS_JDK="$LDFLAGS_JDK -nologo -opt:ref -incremental:no"

   685     if test "x$OPENJDK_TARGET_CPU_BITS" = "x32"; then

   686       LDFLAGS_JDK="$LDFLAGS_JDK -safeseh"

   687     fi

   688     # TODO: make -debug optional "--disable-full-debug-symbols"

   689     LDFLAGS_JDK="$LDFLAGS_JDK -debug"

   690     LDFLAGS_JDKLIB="${LDFLAGS_JDK} -dll -libpath:${JDK_OUTPUTDIR}/lib"

   691     LDFLAGS_JDKLIB_SUFFIX=""

   692     if test "x$OPENJDK_TARGET_CPU_BITS" = "x64"; then

   693       LDFLAGS_STACK_SIZE=1048576

   694     else

   695       LDFLAGS_STACK_SIZE=327680

   696     fi

   697     LDFLAGS_JDKEXE="${LDFLAGS_JDK} /STACK:$LDFLAGS_STACK_SIZE"

   698   else

   699     if test "x$TOOLCHAIN_TYPE" = xgcc; then

   700       # If this is a --hash-style=gnu system, use --hash-style=both, why?

   701       # We have previously set HAS_GNU_HASH if this is the case

   702       if test -n "$HAS_GNU_HASH"; then

   703         LDFLAGS_JDK="${LDFLAGS_JDK} -Xlinker --hash-style=both "

   704       fi

   705       if test "x$OPENJDK_TARGET_OS" = xlinux; then

   706         # And since we now know that the linker is gnu, then add:

   707         #   -z defs, to forbid undefined symbols in object files

   708         #   -z noexecstack, to mark stack regions as non-executable

   709         LDFLAGS_JDK="${LDFLAGS_JDK} -Xlinker -z -Xlinker defs -Xlinker -z -Xlinker noexecstack"

   710         if test "x$DEBUG_LEVEL" = "xrelease"; then

   711           # When building release libraries, tell the linker optimize them.

   712           # Should this be supplied to the OSS linker as well?

   713           LDFLAGS_JDK="${LDFLAGS_JDK} -Xlinker -O1"

   714         fi

   715       fi

   716     fi

   718     if test "x$TOOLCHAIN_TYPE" = xsolstudio; then

   719       LDFLAGS_JDK="$LDFLAGS_JDK -z defs -xildoff -ztext"

   720       LDFLAGS_CXX_JDK="$LDFLAGS_CXX_JDK -norunpath -xnolib"

   721     fi

   723     LDFLAGS_JDKLIB="${LDFLAGS_JDK} $SHARED_LIBRARY_FLAGS \

   724         -L${JDK_OUTPUTDIR}/lib${OPENJDK_TARGET_CPU_LIBDIR}"

   726     # On some platforms (mac) the linker warns about non existing -L dirs.

   727     # Add server first if available. Linking aginst client does not always produce the same results.

   728     # Only add client dir if client is being built. Add minimal (note not minimal1) if only building minimal1.

   729     # Default to server for other variants.

   730     if test "x$JVM_VARIANT_SERVER" = xtrue; then

   731       LDFLAGS_JDKLIB="${LDFLAGS_JDKLIB} -L${JDK_OUTPUTDIR}/lib${OPENJDK_TARGET_CPU_LIBDIR}/server"

   732     elif test "x$JVM_VARIANT_CLIENT" = xtrue; then

   733       LDFLAGS_JDKLIB="${LDFLAGS_JDKLIB} -L${JDK_OUTPUTDIR}/lib${OPENJDK_TARGET_CPU_LIBDIR}/client"

   734     elif test "x$JVM_VARIANT_MINIMAL1" = xtrue; then

   735       LDFLAGS_JDKLIB="${LDFLAGS_JDKLIB} -L${JDK_OUTPUTDIR}/lib${OPENJDK_TARGET_CPU_LIBDIR}/minimal"

   736     else

   737       LDFLAGS_JDKLIB="${LDFLAGS_JDKLIB} -L${JDK_OUTPUTDIR}/lib${OPENJDK_TARGET_CPU_LIBDIR}/server"

   738     fi

   740     LDFLAGS_JDKLIB_SUFFIX="-ljava -ljvm"

   741     if test "x$TOOLCHAIN_TYPE" = xsolstudio; then

   742       LDFLAGS_JDKLIB_SUFFIX="$LDFLAGS_JDKLIB_SUFFIX -lc"

   743     fi

   745     LDFLAGS_JDKEXE="${LDFLAGS_JDK}"

   746     if test "x$OPENJDK_TARGET_OS" = xlinux; then

   747       LDFLAGS_JDKEXE="$LDFLAGS_JDKEXE -Xlinker --allow-shlib-undefined"

   748     fi

   749     if test "x$TOOLCHAIN_TYPE" = xgcc; then

   750       # Enabling pie on 32 bit builds prevents the JVM from allocating a continuous

   751       # java heap.

   752       if test "x$OPENJDK_TARGET_CPU_BITS" != "x32"; then

   753         LDFLAGS_JDKEXE="$LDFLAGS_JDKEXE -pie"

   754       fi

   755     fi

   756   fi

   757   AC_SUBST(LDFLAGS_JDKLIB)

   758   AC_SUBST(LDFLAGS_JDKEXE)

   759   AC_SUBST(LDFLAGS_JDKLIB_SUFFIX)

   760   AC_SUBST(LDFLAGS_JDKEXE_SUFFIX)

   761   AC_SUBST(LDFLAGS_CXX_JDK)

   762 ])

   765 # FLAGS_C_COMPILER_CHECK_ARGUMENTS([ARGUMENT], [RUN-IF-TRUE],

   766 #                                  [RUN-IF-FALSE])

   767 # ------------------------------------------------------------

   768 # Check that the C compiler supports an argument

   769 AC_DEFUN([FLAGS_C_COMPILER_CHECK_ARGUMENTS],

   770 [

   771   AC_MSG_CHECKING([if the C compiler supports "$1"])

   772   supports=yes

   774   saved_cflags="$CFLAGS"

   775   CFLAGS="$CFLAGS $1"

   776   AC_LANG_PUSH([C])

   777   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int i;]])], [],

   778       [supports=no])

   779   AC_LANG_POP([C])

   780   CFLAGS="$saved_cflags"

   782   AC_MSG_RESULT([$supports])

   783   if test "x$supports" = "xyes" ; then

   784     m4_ifval([$2], [$2], [:])

   785   else

   786     m4_ifval([$3], [$3], [:])

   787   fi

   788 ])

   790 # FLAGS_CXX_COMPILER_CHECK_ARGUMENTS([ARGUMENT], [RUN-IF-TRUE],

   791 #                                    [RUN-IF-FALSE])

   792 # ------------------------------------------------------------

   793 # Check that the C++ compiler supports an argument

   794 AC_DEFUN([FLAGS_CXX_COMPILER_CHECK_ARGUMENTS],

   795 [

   796   AC_MSG_CHECKING([if the C++ compiler supports "$1"])

   797   supports=yes

   799   saved_cxxflags="$CXXFLAGS"

   800   CXXFLAGS="$CXXFLAG $1"

   801   AC_LANG_PUSH([C++])

   802   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int i;]])], [],

   803       [supports=no])

   804   AC_LANG_POP([C++])

   805   CXXFLAGS="$saved_cxxflags"

   807   AC_MSG_RESULT([$supports])

   808   if test "x$supports" = "xyes" ; then

   809     m4_ifval([$2], [$2], [:])

   810   else

   811     m4_ifval([$3], [$3], [:])

   812   fi

   813 ])

   815 # FLAGS_COMPILER_CHECK_ARGUMENTS([ARGUMENT], [RUN-IF-TRUE],

   816 #                                [RUN-IF-FALSE])

   817 # ------------------------------------------------------------

   818 # Check that the C and C++ compilers support an argument

   819 AC_DEFUN([FLAGS_COMPILER_CHECK_ARGUMENTS],

   820 [

   821   FLAGS_C_COMPILER_CHECK_ARGUMENTS([$1],

   822                        [C_COMP_SUPPORTS="yes"],

   823                        [C_COMP_SUPPORTS="no"])

   824   FLAGS_CXX_COMPILER_CHECK_ARGUMENTS([$1],

   825                      [CXX_COMP_SUPPORTS="yes"],

   826                      [CXX_COMP_SUPPORTS="no"])

   828   AC_MSG_CHECKING([if both compilers support "$1"])

   829   supports=no

   830   if test "x$C_COMP_SUPPORTS" = "xyes" -a "x$CXX_COMP_SUPPORTS" = "xyes"; then supports=yes; fi

   832   AC_MSG_RESULT([$supports])

   833   if test "x$supports" = "xyes" ; then

   834     m4_ifval([$2], [$2], [:])

   835   else

   836     m4_ifval([$3], [$3], [:])

   837   fi

   838 ])

   840 AC_DEFUN_ONCE([FLAGS_SETUP_COMPILER_FLAGS_MISC],

   841 [

   842   # Some Zero and Shark settings.

   843   # ZERO_ARCHFLAG tells the compiler which mode to build for

   844   case "${OPENJDK_TARGET_CPU}" in

   845     s390)

   846       ZERO_ARCHFLAG="${COMPILER_TARGET_BITS_FLAG}31"

   847       ;;

   848     *)

   849       ZERO_ARCHFLAG="${COMPILER_TARGET_BITS_FLAG}${OPENJDK_TARGET_CPU_BITS}"

   850   esac

   851   FLAGS_COMPILER_CHECK_ARGUMENTS([$ZERO_ARCHFLAG], [], [ZERO_ARCHFLAG=""])

   852   AC_SUBST(ZERO_ARCHFLAG)

   854   # Check that the compiler supports -mX (or -qX on AIX) flags

   855   # Set COMPILER_SUPPORTS_TARGET_BITS_FLAG to 'true' if it does

   856   FLAGS_COMPILER_CHECK_ARGUMENTS([${COMPILER_TARGET_BITS_FLAG}${OPENJDK_TARGET_CPU_BITS}],

   857       [COMPILER_SUPPORTS_TARGET_BITS_FLAG=true],

   858       [COMPILER_SUPPORTS_TARGET_BITS_FLAG=false])

   859   AC_SUBST(COMPILER_SUPPORTS_TARGET_BITS_FLAG)

   860 ])

   862 AC_DEFUN_ONCE([FLAGS_SETUP_GCC6_COMPILER_FLAGS],

   863 [

   864   # These flags are required for GCC 6 builds as undefined behaviour in OpenJDK code

   865   # runs afoul of the more aggressive versions of these optimisations.

   866   # Notably, value range propagation now assumes that the this pointer of C++

   867   # member functions is non-null.

   868   NO_DELETE_NULL_POINTER_CHECKS_CFLAG="-fno-delete-null-pointer-checks"

   869   FLAGS_COMPILER_CHECK_ARGUMENTS([$NO_DELETE_NULL_POINTER_CHECKS_CFLAG -Werror],

   870                                      [], [NO_DELETE_NULL_POINTER_CHECKS_CFLAG=""])

   871   AC_SUBST([NO_DELETE_NULL_POINTER_CHECKS_CFLAG])

   872   NO_LIFETIME_DSE_CFLAG="-fno-lifetime-dse"

   873   FLAGS_COMPILER_CHECK_ARGUMENTS([$NO_LIFETIME_DSE_CFLAG -Werror],

   874                                      [], [NO_LIFETIME_DSE_CFLAG=""])

   875   CFLAGS_JDK="${CFLAGS_JDK} ${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} ${NO_LIFETIME_DSE_CFLAG}"

   876   AC_SUBST([NO_LIFETIME_DSE_CFLAG])

   877 ])

Mercurial > jdk8-mips64-public / file revision

common/autoconf/flags.m4@a8da94d779b3

common/autoconf/flags.m4