#

# Copyright (c) 2011, 2016, 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.

#

# Reset the global CFLAGS/LDFLAGS variables and initialize them with the

# corresponding configure arguments instead

AC_DEFUN_ONCE([FLAGS_SETUP_USER_SUPPLIED_FLAGS],

[

  if test "x$CFLAGS" != "x${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])])

  EXTRA_CFLAGS="$with_extra_cflags"

  EXTRA_CXXFLAGS="$with_extra_cxxflags"

  EXTRA_LDFLAGS="$with_extra_ldflags"

  # Hotspot needs these set in their legacy form

  LEGACY_EXTRA_CFLAGS="$LEGACY_EXTRA_CFLAGS $EXTRA_CFLAGS"

  LEGACY_EXTRA_CXXFLAGS="$LEGACY_EXTRA_CXXFLAGS $EXTRA_CXXFLAGS"

  LEGACY_EXTRA_LDFLAGS="$LEGACY_EXTRA_LDFLAGS $EXTRA_LDFLAGS"

  AC_SUBST(LEGACY_EXTRA_CFLAGS)

  AC_SUBST(LEGACY_EXTRA_CXXFLAGS)

  AC_SUBST(LEGACY_EXTRA_LDFLAGS)

  AC_SUBST(EXTRA_CFLAGS)

  AC_SUBST(EXTRA_CXXFLAGS)

  AC_SUBST(EXTRA_LDFLAGS)

  # The global CFLAGS and LDLAGS variables are used by configure tests and

  # should include the extra parameters

  CFLAGS="$EXTRA_CFLAGS"

  CXXFLAGS="$EXTRA_CXXFLAGS"

  LDFLAGS="$EXTRA_LDFLAGS"

  CPPFLAGS=""

])

# Setup the sysroot flags and add them to global CFLAGS and LDFLAGS so

# that configure can use them while detecting compilers.

# TOOLCHAIN_TYPE is available here.

# Param 1 - Optional prefix to all variables. (e.g BUILD_)

AC_DEFUN([FLAGS_SETUP_SYSROOT_FLAGS],

[

  if test "x[$]$1SYSROOT" != "x"; then

    if test "x$TOOLCHAIN_TYPE" = xsolstudio; then

      if test "x$OPENJDK_TARGET_OS" = xsolaris; then

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

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

        # compile and link command line. Must also add -I-xbuiltin to enable

        # inlining of system functions and intrinsics.

        $1SYSROOT_CFLAGS="-I-xbuiltin -I[$]$1SYSROOT/usr/include"

        $1SYSROOT_LDFLAGS="-L[$]$1SYSROOT/usr/lib$OPENJDK_TARGET_CPU_ISADIR \

            -L[$]$1SYSROOT/lib$OPENJDK_TARGET_CPU_ISADIR"

      fi

    elif test "x$TOOLCHAIN_TYPE" = xgcc; then

      $1SYSROOT_CFLAGS="--sysroot=[$]$1SYSROOT"

      $1SYSROOT_LDFLAGS="--sysroot=[$]$1SYSROOT"

    elif test "x$TOOLCHAIN_TYPE" = xclang; then

      $1SYSROOT_CFLAGS="-isysroot [$]$1SYSROOT"

      $1SYSROOT_LDFLAGS="-isysroot [$]$1SYSROOT"

    fi

    # Propagate the sysroot args to hotspot

    $1LEGACY_EXTRA_CFLAGS="[$]$1LEGACY_EXTRA_CFLAGS [$]$1SYSROOT_CFLAGS"

    $1LEGACY_EXTRA_CXXFLAGS="[$]$1LEGACY_EXTRA_CXXFLAGS [$]$1SYSROOT_CFLAGS"

    $1LEGACY_EXTRA_LDFLAGS="[$]$1LEGACY_EXTRA_LDFLAGS [$]$1SYSROOT_LDFLAGS"

    # The global CFLAGS and LDFLAGS variables need these for configure to function

    $1CFLAGS="[$]$1CFLAGS [$]$1SYSROOT_CFLAGS"

    $1CPPFLAGS="[$]$1CPPFLAGS [$]$1SYSROOT_CFLAGS"

    $1CXXFLAGS="[$]$1CXXFLAGS [$]$1SYSROOT_CFLAGS"

    $1LDFLAGS="[$]$1LDFLAGS [$]$1SYSROOT_LDFLAGS"

  fi

  if test "x$OPENJDK_TARGET_OS" = xmacosx; then

    # We also need -iframework<path>/System/Library/Frameworks

    $1SYSROOT_CFLAGS="[$]$1SYSROOT_CFLAGS -iframework [$]$1SYSROOT/System/Library/Frameworks"

    $1SYSROOT_LDFLAGS="[$]$1SYSROOT_LDFLAGS -iframework [$]$1SYSROOT/System/Library/Frameworks"

    # These always need to be set, or we can't find the frameworks embedded in JavaVM.framework

    # set this here so it doesn't have to be peppered throughout the forest

    $1SYSROOT_CFLAGS="[$]$1SYSROOT_CFLAGS -F [$]$1SYSROOT/System/Library/Frameworks/JavaVM.framework/Frameworks"

    $1SYSROOT_LDFLAGS="[$]$1SYSROOT_LDFLAGS -F [$]$1SYSROOT/System/Library/Frameworks/JavaVM.framework/Frameworks"

  fi

  AC_SUBST($1SYSROOT_CFLAGS)

  AC_SUBST($1SYSROOT_LDFLAGS)

])

AC_DEFUN_ONCE([FLAGS_SETUP_INIT_FLAGS],

[

  # COMPILER_TARGET_BITS_FLAG  : option for selecting 32- or 64-bit output

  # COMPILER_COMMAND_FILE_FLAG : option for passing a command file to the compiler

  # COMPILER_BINDCMD_FILE_FLAG : option for specifying a file which saves the binder

  #                              commands produced by the link step (currently AIX only)

  if test "x$TOOLCHAIN_TYPE" = xxlc; then

    COMPILER_TARGET_BITS_FLAG="-q"

    COMPILER_COMMAND_FILE_FLAG="-f"

    COMPILER_BINDCMD_FILE_FLAG="-bloadmap:"

  else

    COMPILER_TARGET_BITS_FLAG="-m"

    COMPILER_COMMAND_FILE_FLAG="@"

    COMPILER_BINDCMD_FILE_FLAG=""

    # The solstudio linker does not support @-files.

    if test "x$TOOLCHAIN_TYPE" = xsolstudio; then

      COMPILER_COMMAND_FILE_FLAG=

    fi

    # Check if @file is supported by gcc

    if test "x$TOOLCHAIN_TYPE" = xgcc; then

      AC_MSG_CHECKING([if @file is supported by gcc])

      # Extra emtpy "" to prevent ECHO from interpreting '--version' as argument

      $ECHO "" "--version" > command.file

      if $CXX @command.file 2>&AS_MESSAGE_LOG_FD >&AS_MESSAGE_LOG_FD; then

        AC_MSG_RESULT(yes)

        COMPILER_COMMAND_FILE_FLAG="@"

      else

        AC_MSG_RESULT(no)

        COMPILER_COMMAND_FILE_FLAG=

      fi

      $RM command.file

    fi

  fi

  AC_SUBST(COMPILER_TARGET_BITS_FLAG)

  AC_SUBST(COMPILER_COMMAND_FILE_FLAG)

  AC_SUBST(COMPILER_BINDCMD_FILE_FLAG)

  # 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

  AC_SUBST(STRIPFLAGS)

  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 -l0x409"

    JVM_RCFLAGS="-nologo"

    if test "x$DEBUG_LEVEL" = xrelease; then

      RC_FLAGS="$RC_FLAGS -DNDEBUG"

      JVM_RCFLAGS="$JVM_RCFLAGS -DNDEBUG"

    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_VERSION_STRING=\$(VERSION_STRING)\" \

        -D\"JDK_COMPANY=\$(COMPANY_NAME)\" \

        -D\"JDK_COMPONENT=\$(PRODUCT_NAME) \$(JDK_RC_PLATFORM_NAME) binary\" \

        -D\"JDK_VER=\$(VERSION_NUMBER)\" \

        -D\"JDK_COPYRIGHT=Copyright \xA9 $COPYRIGHT_YEAR\" \

        -D\"JDK_NAME=\$(PRODUCT_NAME) \$(JDK_RC_PLATFORM_NAME) \$(VERSION_MAJOR)\" \

        -D\"JDK_FVER=\$(subst .,\$(COMMA),\$(VERSION_NUMBER_FOUR_POSITIONS))\""

    JVM_RCFLAGS="$JVM_RCFLAGS \

        -D\"HS_BUILD_ID=\$(VERSION_STRING)\" \

        -D\"HS_COMPANY=\$(COMPANY_NAME)\" \

        -D\"JDK_DOTVER=\$(VERSION_NUMBER_FOUR_POSITIONS)\" \

        -D\"HS_COPYRIGHT=Copyright $COPYRIGHT_YEAR\" \

        -D\"HS_NAME=\$(PRODUCT_NAME) \$(VERSION_SHORT)\" \

        -D\"JDK_VER=\$(subst .,\$(COMMA),\$(VERSION_NUMBER_FOUR_POSITIONS))\" \

        -D\"HS_FNAME=jvm.dll\" \

        -D\"HS_INTERNAL_NAME=jvm\""

  fi

  AC_SUBST(RC_FLAGS)

  AC_SUBST(JVM_RCFLAGS)

  if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then

    # silence copyright notice and other headers.

    COMMON_CCXXFLAGS="$COMMON_CCXXFLAGS -nologo"

  fi

])

AC_DEFUN([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

      if test "x$STATIC_BUILD" = xtrue; then

        SHARED_LIBRARY_FLAGS ='-undefined dynamic_lookup'

      else

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

        JVM_CFLAGS="$JVM_CFLAGS $PICFLAG"

      fi

      SET_EXECUTABLE_ORIGIN='-Wl,-rpath,@loader_path/.'

      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_ORIGIN="-Wl,-z,origin $SET_EXECUTABLE_ORIGIN"

      SET_SHARED_LIBRARY_NAME='-Wl,-soname=[$]1'

      SET_SHARED_LIBRARY_MAPFILE='-Wl,-version-script=[$]1'

    fi

  elif test "x$TOOLCHAIN_TYPE" = xclang; then

    C_FLAG_REORDER=''

    CXX_FLAG_REORDER=''

    if test "x$OPENJDK_TARGET_OS" = xmacosx; then

      # Linking is different on MacOSX

      PICFLAG=''

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

      SET_EXECUTABLE_ORIGIN='-Wl,-rpath,@loader_path/.'

      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'

      if test "x$STATIC_BUILD" = xfalse; then

        JVM_CFLAGS="$JVM_CFLAGS -fPIC"

      fi

    else

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

      PICFLAG='-fPIC'

      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'

    fi

  elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then

    if test "x$OPENJDK_TARGET_CPU" = xsparcv9; then

      PICFLAG="-xcode=pic32"

    else

      PICFLAG="-KPIC"

    fi

    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='-h [$]1'

    SET_SHARED_LIBRARY_MAPFILE='-M[$]1'

  elif test "x$TOOLCHAIN_TYPE" = xxlc; then

    # '-qpic' defaults to 'qpic=small'. This means that the compiler generates only

    # one instruction for accessing the TOC. If the TOC grows larger than 64K, the linker

    # will have to patch this single instruction with a call to some out-of-order code which

    # does the load from the TOC. This is of course slow. But in that case we also would have

    # to use '-bbigtoc' for linking anyway so we could also change the PICFLAG to 'qpic=large'.

    # With 'qpic=large' the compiler will by default generate a two-instruction sequence which

    # can be patched directly by the linker and does not require a jump to out-of-order code.

    # Another alternative instead of using 'qpic=large -bbigtoc' may be to use '-qminimaltoc'

    # instead. This creates a distinct TOC for every compilation unit (and thus requires two

    # loads for accessing a global variable). But there are rumors that this may be seen as a

    # 'performance feature' because of improved code locality of the symbols used in a

    # compilation unit.

    PICFLAG="-qpic"

    JVM_CFLAGS="$JVM_CFLAGS $PICFLAG"

    C_FLAG_REORDER=''

    CXX_FLAG_REORDER=''

    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

    PICFLAG=""

    C_FLAG_REORDER=''

    CXX_FLAG_REORDER=''

    SHARED_LIBRARY_FLAGS="-dll"

    SET_EXECUTABLE_ORIGIN=''

    SET_SHARED_LIBRARY_ORIGIN=''

    SET_SHARED_LIBRARY_NAME=''

    SET_SHARED_LIBRARY_MAPFILE='-def:[$]1'

  fi

  AC_SUBST(C_FLAG_REORDER)

  AC_SUBST(CXX_FLAG_REORDER)

  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)

  # 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" = xclang; then

    C_FLAG_DEPS="-MMD -MF"

  elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then

    C_FLAG_DEPS="-xMMD -xMF"

  elif test "x$TOOLCHAIN_TYPE" = xxlc; then

    C_FLAG_DEPS="-qmakedep=gcc -MF"

  fi

  CXX_FLAG_DEPS="$C_FLAG_DEPS"

  AC_SUBST(C_FLAG_DEPS)

  AC_SUBST(CXX_FLAG_DEPS)

  # Debug symbols

  if test "x$TOOLCHAIN_TYPE" = xgcc; then

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

      # reduce from default "-g2" option to save space

      CFLAGS_DEBUG_SYMBOLS="-g1"

      CXXFLAGS_DEBUG_SYMBOLS="-g1"

    else

      CFLAGS_DEBUG_SYMBOLS="-g"

      CXXFLAGS_DEBUG_SYMBOLS="-g"

    fi

  elif test "x$TOOLCHAIN_TYPE" = xclang; then

    CFLAGS_DEBUG_SYMBOLS="-g"

    CXXFLAGS_DEBUG_SYMBOLS="-g"

  elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then

    CFLAGS_DEBUG_SYMBOLS="-g -xs"

    # -g0 enables debug symbols without disabling inlining.

    CXXFLAGS_DEBUG_SYMBOLS="-g0 -xs"

  elif test "x$TOOLCHAIN_TYPE" = xxlc; then

    CFLAGS_DEBUG_SYMBOLS="-g"

    CXXFLAGS_DEBUG_SYMBOLS="-g"

  elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then

    CFLAGS_DEBUG_SYMBOLS="-Zi"

    CXXFLAGS_DEBUG_SYMBOLS="-Zi"

  fi

  AC_SUBST(CFLAGS_DEBUG_SYMBOLS)

  AC_SUBST(CXXFLAGS_DEBUG_SYMBOLS)

  # Debug symbols for JVM_CFLAGS

  if test "x$TOOLCHAIN_TYPE" = xsolstudio; then

    JVM_CFLAGS_SYMBOLS="$JVM_CFLAGS_SYMBOLS -xs"

    if test "x$DEBUG_LEVEL" = xslowdebug; then

      JVM_CFLAGS_SYMBOLS="$JVM_CFLAGS_SYMBOLS -g"

    else

      # -g0 does not disable inlining, which -g does.

      JVM_CFLAGS_SYMBOLS="$JVM_CFLAGS_SYMBOLS -g0"

    fi

  elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then

    JVM_CFLAGS_SYMBOLS="$JVM_CFLAGS_SYMBOLS -Z7 -d2Zi+"

  else

    JVM_CFLAGS_SYMBOLS="$JVM_CFLAGS_SYMBOLS -g"

  fi

  AC_SUBST(JVM_CFLAGS_SYMBOLS)

  # bounds, memory and behavior checking options

  if test "x$TOOLCHAIN_TYPE" = xgcc; then

    case $DEBUG_LEVEL in

    release )

      # no adjustment

      ;;

    fastdebug )

      # no adjustment

      ;;

    slowdebug )

      # FIXME: By adding this to C(XX)FLAGS_DEBUG_OPTIONS/JVM_CFLAGS_SYMBOLS it

      # get's added conditionally on whether we produce debug symbols or not.

      # This is most likely not really correct.

      # Add runtime stack smashing and undefined behavior checks.

      # Not all versions of gcc support -fstack-protector