common/autoconf/toolchain.m4

Fri, 06 Apr 2018 04:13:09 -0700

author
kevinw
date
Fri, 06 Apr 2018 04:13:09 -0700
changeset 2208
feba63b3fa36
parent 2207
ddf2d8bf87c0
child 2215
7a73b8b4ac8a
permissions
-rw-r--r--

8035751: Clean up Visual Studio detection logic
Reviewed-by: ihse, erikj, tbell

     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 ########################################################################
    27 # This file is responsible for detecting, verifying and setting up the 
    28 # toolchain, i.e. the compiler, linker and related utilities. It will setup 
    29 # proper paths to the binaries, but it will not setup any flags.
    30 #
    31 # The binaries used is determined by the toolchain type, which is the family of 
    32 # compilers and related tools that are used.
    33 ########################################################################
    36 # All valid toolchains, regardless of platform (used by help.m4)
    37 VALID_TOOLCHAINS_all="gcc clang solstudio xlc microsoft"
    39 # These toolchains are valid on different platforms
    40 VALID_TOOLCHAINS_linux="gcc clang"
    41 VALID_TOOLCHAINS_solaris="solstudio"
    42 VALID_TOOLCHAINS_macosx="gcc clang"
    43 VALID_TOOLCHAINS_aix="xlc"
    44 VALID_TOOLCHAINS_windows="microsoft"
    46 # Toolchain descriptions
    47 TOOLCHAIN_DESCRIPTION_clang="clang/LLVM"
    48 TOOLCHAIN_DESCRIPTION_gcc="GNU Compiler Collection"
    49 TOOLCHAIN_DESCRIPTION_microsoft="Microsoft Visual Studio"
    50 TOOLCHAIN_DESCRIPTION_solstudio="Oracle Solaris Studio"
    51 TOOLCHAIN_DESCRIPTION_xlc="IBM XL C/C++"
    53 # Prepare the system so that TOOLCHAIN_CHECK_COMPILER_VERSION can be called.
    54 # Must have CC_VERSION_NUMBER and CXX_VERSION_NUMBER.
    55 # $1 - optional variable prefix for compiler and version variables (BUILD_)
    56 # $2 - optional variable prefix for comparable variable (OPENJDK_BUILD_)
    57 AC_DEFUN([TOOLCHAIN_PREPARE_FOR_VERSION_COMPARISONS],
    58 [
    59   if test "x$CC_VERSION" != "x$CXX_VERSION"; then
    60     AC_MSG_WARN([C and C++ compiler has different version numbers, $CC_VERSION vs $CXX_VERSION.])
    61     AC_MSG_WARN([This typically indicates a broken setup, and is not supported])
    62   fi
    64   # We only check CC_VERSION since we assume CXX_VERSION is equal.
    65   if [ [[ "$CC_VERSION" =~ (.*\.){3} ]] ]; then
    66     AC_MSG_WARN([C compiler version number has more than three parts (X.Y.Z): $CC_VERSION. Comparisons might be wrong.])
    67   fi
    69   if [ [[  "$CC_VERSION" =~ [0-9]{6} ]] ]; then
    70     AC_MSG_WARN([C compiler version number has a part larger than 99999: $CC_VERSION. Comparisons might be wrong.])
    71   fi
    73   $2COMPARABLE_ACTUAL_VERSION=`$AWK -F. '{ printf("%05d%05d%05d\n", [$]1, [$]2, [$]3) }' <<< "$CC_VERSION"`
    74 ])
    76 # Check if the configured compiler (C and C++) is of a specific version or
    77 # newer. TOOLCHAIN_PREPARE_FOR_VERSION_COMPARISONS must have been called before.
    78 #
    79 # Arguments:
    80 #   $1:   The version string to check against the found version
    81 #   $2:   block to run if the compiler is at least this version (>=)
    82 #   $3:   block to run if the compiler is older than this version (<)
    83 AC_DEFUN([TOOLCHAIN_CHECK_COMPILER_VERSION],
    84 [
    85   REFERENCE_VERSION=$1
    87   if [ [[ "$REFERENCE_VERSION" =~ (.*\.){3} ]] ]; then
    88     AC_MSG_ERROR([Internal error: Cannot compare to $REFERENCE_VERSION, only three parts (X.Y.Z) is supported])
    89   fi
    91   if [ [[ "$REFERENCE_VERSION" =~ [0-9]{6} ]] ]; then
    92     AC_MSG_ERROR([Internal error: Cannot compare to $REFERENCE_VERSION, only parts < 99999 is supported])
    93   fi
    95   # Version comparison method inspired by http://stackoverflow.com/a/24067243
    96   COMPARABLE_REFERENCE_VERSION=`$AWK -F. '{ printf("%05d%05d%05d\n", [$]1, [$]2, [$]3) }' <<< "$REFERENCE_VERSION"`
    98   if test $COMPARABLE_ACTUAL_VERSION -ge $COMPARABLE_REFERENCE_VERSION ; then
    99     m4_ifval([$2], [$2], [:])
   100   else
   101     m4_ifval([$3], [$3], [:])
   102   fi
   103 ])
   106 # Setup a number of variables describing how native output files are
   107 # named on this platform/toolchain.
   108 AC_DEFUN([TOOLCHAIN_SETUP_FILENAME_PATTERNS],
   109 [
   110   # Define filename patterns
   111   if test "x$OPENJDK_TARGET_OS" = xwindows; then
   112     LIBRARY_PREFIX=
   113     SHARED_LIBRARY_SUFFIX='.dll'
   114     STATIC_LIBRARY_SUFFIX='.lib'
   115     SHARED_LIBRARY='[$]1.dll'
   116     STATIC_LIBRARY='[$]1.lib'
   117     OBJ_SUFFIX='.obj'
   118     EXE_SUFFIX='.exe'
   119   else
   120     LIBRARY_PREFIX=lib
   121     SHARED_LIBRARY_SUFFIX='.so'
   122     STATIC_LIBRARY_SUFFIX='.a'
   123     SHARED_LIBRARY='lib[$]1.so'
   124     STATIC_LIBRARY='lib[$]1.a'
   125     OBJ_SUFFIX='.o'
   126     EXE_SUFFIX=''
   127     if test "x$OPENJDK_TARGET_OS" = xmacosx; then
   128       SHARED_LIBRARY='lib[$]1.dylib'
   129       SHARED_LIBRARY_SUFFIX='.dylib'
   130     fi
   131   fi
   133   AC_SUBST(LIBRARY_PREFIX)
   134   AC_SUBST(SHARED_LIBRARY_SUFFIX)
   135   AC_SUBST(STATIC_LIBRARY_SUFFIX)
   136   AC_SUBST(SHARED_LIBRARY)
   137   AC_SUBST(STATIC_LIBRARY)
   138   AC_SUBST(OBJ_SUFFIX)
   139   AC_SUBST(EXE_SUFFIX)  
   140 ])
   142 # Determine which toolchain type to use, and make sure it is valid for this
   143 # platform. Setup various information about the selected toolchain.
   144 AC_DEFUN_ONCE([TOOLCHAIN_DETERMINE_TOOLCHAIN_TYPE],
   145 [
   146   AC_ARG_WITH(toolchain-type, [AS_HELP_STRING([--with-toolchain-type],
   147       [the toolchain type (or family) to use, use '--help' to show possible values @<:@platform dependent@:>@])])
   149   # Use indirect variable referencing
   150   toolchain_var_name=VALID_TOOLCHAINS_$OPENJDK_BUILD_OS
   151   VALID_TOOLCHAINS=${!toolchain_var_name}
   152   # First toolchain type in the list is the default
   153   DEFAULT_TOOLCHAIN=${VALID_TOOLCHAINS%% *}
   155   if test "x$with_toolchain_type" = xlist; then
   156     # List all toolchains
   157     AC_MSG_NOTICE([The following toolchains are valid on this platform:])
   158     for toolchain in $VALID_TOOLCHAINS; do
   159       toolchain_var_name=TOOLCHAIN_DESCRIPTION_$toolchain
   160       TOOLCHAIN_DESCRIPTION=${!toolchain_var_name}
   161       $PRINTF "  %-10s  %s\n" $toolchain "$TOOLCHAIN_DESCRIPTION"
   162     done
   164     exit 0
   165   elif test "x$with_toolchain_type" != x; then
   166     # User override; check that it is valid
   167     if test "x${VALID_TOOLCHAINS/$with_toolchain_type/}" = "x${VALID_TOOLCHAINS}"; then
   168       AC_MSG_NOTICE([Toolchain type $with_toolchain_type is not valid on this platform.])
   169       AC_MSG_NOTICE([Valid toolchains: $VALID_TOOLCHAINS.])
   170       AC_MSG_ERROR([Cannot continue.])
   171     fi
   172     TOOLCHAIN_TYPE=$with_toolchain_type
   173   else
   174     # No flag given, use default
   175     TOOLCHAIN_TYPE=$DEFAULT_TOOLCHAIN
   176   fi
   177   AC_SUBST(TOOLCHAIN_TYPE)
   179   TOOLCHAIN_CC_BINARY_clang="clang"
   180   TOOLCHAIN_CC_BINARY_gcc="gcc"
   181   TOOLCHAIN_CC_BINARY_microsoft="cl"
   182   TOOLCHAIN_CC_BINARY_solstudio="cc"
   183   TOOLCHAIN_CC_BINARY_xlc="xlc_r"
   185   TOOLCHAIN_CXX_BINARY_clang="clang++"
   186   TOOLCHAIN_CXX_BINARY_gcc="g++"
   187   TOOLCHAIN_CXX_BINARY_microsoft="cl"
   188   TOOLCHAIN_CXX_BINARY_solstudio="CC"
   189   TOOLCHAIN_CXX_BINARY_xlc="xlC_r"
   191   # Use indirect variable referencing
   192   toolchain_var_name=TOOLCHAIN_DESCRIPTION_$TOOLCHAIN_TYPE
   193   TOOLCHAIN_DESCRIPTION=${!toolchain_var_name}
   194   toolchain_var_name=TOOLCHAIN_CC_BINARY_$TOOLCHAIN_TYPE
   195   TOOLCHAIN_CC_BINARY=${!toolchain_var_name}
   196   toolchain_var_name=TOOLCHAIN_CXX_BINARY_$TOOLCHAIN_TYPE
   197   TOOLCHAIN_CXX_BINARY=${!toolchain_var_name}
   199   TOOLCHAIN_SETUP_FILENAME_PATTERNS
   201   if test "x$TOOLCHAIN_TYPE" = "x$DEFAULT_TOOLCHAIN"; then
   202     AC_MSG_NOTICE([Using default toolchain $TOOLCHAIN_TYPE ($TOOLCHAIN_DESCRIPTION)])
   203   else
   204     AC_MSG_NOTICE([Using user selected toolchain $TOOLCHAIN_TYPE ($TOOLCHAIN_DESCRIPTION). Default toolchain is $DEFAULT_TOOLCHAIN.])
   205   fi 
   206 ])
   208 # Before we start detecting the toolchain executables, we might need some 
   209 # special setup, e.g. additional paths etc.
   210 AC_DEFUN_ONCE([TOOLCHAIN_PRE_DETECTION],
   211 [
   212   # FIXME: Is this needed?
   213   AC_LANG(C++)
   215   # Store the CFLAGS etal passed to the configure script.
   216   ORG_CFLAGS="$CFLAGS"
   217   ORG_CXXFLAGS="$CXXFLAGS"
   218   ORG_OBJCFLAGS="$OBJCFLAGS"
   220   # On Windows, we need to detect the visual studio installation first.
   221   # This will change the PATH, but we need to keep that new PATH even 
   222   # after toolchain detection is done, since the compiler (on x86) uses
   223   # it for DLL resolution in runtime.
   224   if test "x$OPENJDK_BUILD_OS" = "xwindows" && test "x$TOOLCHAIN_TYPE" = "xmicrosoft"; then
   225     TOOLCHAIN_SETUP_VISUAL_STUDIO_ENV
   226     # Reset path to VS_PATH. It will include everything that was on PATH at the time we
   227     # ran TOOLCHAIN_SETUP_VISUAL_STUDIO_ENV.
   228     PATH="$VS_PATH"
   229     # The microsoft toolchain also requires INCLUDE and LIB to be set.
   230     export INCLUDE="$VS_INCLUDE"
   231     export LIB="$VS_LIB"
   232   fi
   234   # autoconf magic only relies on PATH, so update it if tools dir is specified
   235   OLD_PATH="$PATH"
   237   # Before we locate the compilers, we need to sanitize the Xcode build environment
   238   if test "x$OPENJDK_TARGET_OS" = "xmacosx"; then
   239     # determine path to Xcode developer directory
   240     # can be empty in which case all the tools will rely on a sane Xcode 4 installation
   241     SET_DEVELOPER_DIR=
   243     if test -n "$XCODE_PATH"; then
   244       DEVELOPER_DIR="$XCODE_PATH"/Contents/Developer
   245     fi
   247     # DEVELOPER_DIR could also be provided directly
   248     AC_MSG_CHECKING([Determining if we need to set DEVELOPER_DIR])
   249     if test -n "$DEVELOPER_DIR"; then
   250       if test ! -d "$DEVELOPER_DIR"; then
   251         AC_MSG_ERROR([Xcode Developer path does not exist: $DEVELOPER_DIR, please provide a path to the Xcode 4 application bundle using --with-xcode-path])
   252       fi
   253       if test ! -f "$DEVELOPER_DIR"/usr/bin/xcodebuild; then
   254         AC_MSG_ERROR([Xcode Developer path is not valid: $DEVELOPER_DIR, it must point to Contents/Developer inside an Xcode application bundle])
   255       fi
   256       # make it visible to all the tools immediately
   257       export DEVELOPER_DIR
   258       SET_DEVELOPER_DIR="export DEVELOPER_DIR := $DEVELOPER_DIR"
   259       AC_MSG_RESULT([yes ($DEVELOPER_DIR)])
   260     else
   261       AC_MSG_RESULT([no])
   262     fi
   263     AC_SUBST(SET_DEVELOPER_DIR)
   265     AC_PATH_PROG(XCODEBUILD, xcodebuild)
   266     if test -z "$XCODEBUILD"; then
   267       AC_MSG_ERROR([The xcodebuild tool was not found, the Xcode command line tools are required to build on Mac OS X])
   268     fi
   270     # Fail-fast: verify we're building on Xcode 4, we cannot build with Xcode 5 or later
   271     XCODE_VERSION=`$XCODEBUILD -version | grep '^Xcode ' | sed 's/Xcode //'`
   272     XC_VERSION_PARTS=( ${XCODE_VERSION//./ } )
   273     if test ! "${XC_VERSION_PARTS[[0]]}" = "4"; then
   274       AC_MSG_ERROR([Xcode 4 is required to build JDK 8, the version found was $XCODE_VERSION. Use --with-xcode-path to specify the location of Xcode 4 or make Xcode 4 active by using xcode-select.])
   275     fi
   277     # Some versions of Xcode 5 command line tools install gcc and g++ as symlinks to
   278     # clang and clang++, which will break the build. So handle that here if we need to.
   279     if test -L "/usr/bin/gcc" -o -L "/usr/bin/g++"; then
   280       # use xcrun to find the real gcc and add it's directory to PATH
   281       # then autoconf magic will find it
   282       AC_MSG_NOTICE([Found gcc symlinks to clang in /usr/bin, adding path to real gcc to PATH])
   283       XCODE_BIN_PATH=$(dirname `xcrun -find gcc`)
   284       PATH="$XCODE_BIN_PATH":$PATH
   285     fi
   287     # Determine appropriate SDKPATH, don't use SDKROOT as it interferes with the stub tools
   288     AC_MSG_CHECKING([Determining Xcode SDK path])
   289     # allow SDKNAME to be set to override the default SDK selection
   290     SDKPATH=`"$XCODEBUILD" -sdk ${SDKNAME:-macosx} -version | grep '^Path: ' | sed 's/Path: //'`
   291     if test -n "$SDKPATH"; then
   292       AC_MSG_RESULT([$SDKPATH])
   293     else
   294       AC_MSG_RESULT([(none, will use system headers and frameworks)])
   295     fi
   296     AC_SUBST(SDKPATH)
   298     # Perform a basic sanity test
   299     if test ! -f "$SDKPATH/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h"; then
   300       AC_MSG_ERROR([Unable to find required framework headers, provide a valid path to Xcode 4 using --with-xcode-path])
   301     fi
   303     # if SDKPATH is non-empty then we need to add -isysroot and -iframework for gcc and g++
   304     if test -n "$SDKPATH"; then
   305       # We need -isysroot <path> and -iframework<path>/System/Library/Frameworks
   306       CFLAGS_JDK="${CFLAGS_JDK} -isysroot \"$SDKPATH\" -iframework\"$SDKPATH/System/Library/Frameworks\""
   307       CXXFLAGS_JDK="${CXXFLAGS_JDK} -isysroot \"$SDKPATH\" -iframework\"$SDKPATH/System/Library/Frameworks\""
   308       LDFLAGS_JDK="${LDFLAGS_JDK} -isysroot \"$SDKPATH\" -iframework\"$SDKPATH/System/Library/Frameworks\""
   309     fi
   311     # These always need to be set, or we can't find the frameworks embedded in JavaVM.framework
   312     # setting this here means it doesn't have to be peppered throughout the forest
   313     CFLAGS_JDK="$CFLAGS_JDK -F\"$SDKPATH/System/Library/Frameworks/JavaVM.framework/Frameworks\""
   314     CXXFLAGS_JDK="$CXXFLAGS_JDK -F\"$SDKPATH/System/Library/Frameworks/JavaVM.framework/Frameworks\""
   315     LDFLAGS_JDK="$LDFLAGS_JDK -F\"$SDKPATH/System/Library/Frameworks/JavaVM.framework/Frameworks\""
   316   fi
   318   # For solaris we really need solaris tools, and not the GNU equivalent.
   319   # The build tools on Solaris reside in /usr/ccs (C Compilation System),
   320   # so add that to path before starting to probe.
   321   # FIXME: This was originally only done for AS,NM,GNM,STRIP,MCS,OBJCOPY,OBJDUMP.
   322   if test "x$OPENJDK_BUILD_OS" = xsolaris; then
   323     PATH="/usr/ccs/bin:$PATH"
   324   fi
   326   # Finally add TOOLS_DIR at the beginning, to allow --with-tools-dir to 
   327   # override all other locations.
   328   if test "x$TOOLS_DIR" != x; then
   329     PATH=$TOOLS_DIR:$PATH
   330   fi
   332   # If a devkit is found on the builddeps server, then prepend its path to the
   333   # PATH variable. If there are cross compilers available in the devkit, these
   334   # will be found by AC_PROG_CC et al.
   335   DEVKIT=
   336   BDEPS_CHECK_MODULE(DEVKIT, devkit, xxx,
   337       [
   338         # Found devkit
   339         PATH="$DEVKIT/bin:$PATH"
   340         SYS_ROOT="$DEVKIT/${rewritten_target}/sys-root"
   341         if test "x$x_includes" = "xNONE"; then
   342           x_includes="$SYS_ROOT/usr/include/X11"
   343         fi
   344         if test "x$x_libraries" = "xNONE"; then
   345           x_libraries="$SYS_ROOT/usr/lib"
   346         fi
   347       ],
   348       [])
   349 ])
   351 # Restore path, etc
   352 AC_DEFUN_ONCE([TOOLCHAIN_POST_DETECTION],
   353 [
   354   # Restore old path.
   355   PATH="$OLD_PATH"
   357   # Restore the flags to the user specified values.
   358   # This is necessary since AC_PROG_CC defaults CFLAGS to "-g -O2"
   359   CFLAGS="$ORG_CFLAGS"
   360   CXXFLAGS="$ORG_CXXFLAGS"
   361   OBJCFLAGS="$ORG_OBJCFLAGS"
   362 ])
   364 # Check if a compiler is of the toolchain type we expect, and save the version
   365 # information from it. If the compiler does not match the expected type,
   366 # this function will abort using AC_MSG_ERROR. If it matches, the version will
   367 # be stored in CC_VERSION_NUMBER/CXX_VERSION_NUMBER (as a dotted number), and
   368 # the full version string in CC_VERSION_STRING/CXX_VERSION_STRING.
   369 #
   370 # $1 = compiler to test (CC or CXX)
   371 # $2 = human readable name of compiler (C or C++)
   372 AC_DEFUN([TOOLCHAIN_EXTRACT_COMPILER_VERSION],
   373 [
   374   COMPILER=[$]$1
   375   COMPILER_NAME=$2
   377   if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
   378     # cc -V output typically looks like
   379     #     cc: Sun C 5.12 Linux_i386 2011/11/16
   380     COMPILER_VERSION_OUTPUT=`$COMPILER -V 2>&1`
   381     # Check that this is likely to be the Solaris Studio cc.
   382     $ECHO "$COMPILER_VERSION_OUTPUT" | $GREP "^.*: Sun $COMPILER_NAME" > /dev/null
   383     if test $? -ne 0; then
   384       ALT_VERSION_OUTPUT=`$COMPILER --version 2>&1`
   385       AC_MSG_NOTICE([The $COMPILER_NAME compiler (located as $COMPILER) does not seem to be the required $TOOLCHAIN_TYPE compiler.])
   386       AC_MSG_NOTICE([The result from running with -V was: "$COMPILER_VERSION_OUTPUT"])
   387       AC_MSG_NOTICE([The result from running with --version was: "$ALT_VERSION_OUTPUT"])
   388       AC_MSG_ERROR([A $TOOLCHAIN_TYPE compiler is required. Try setting --with-tools-dir.])
   389     fi
   390     # Remove usage instructions (if present), and
   391     # collapse compiler output into a single line
   392     COMPILER_VERSION_STRING=`$ECHO $COMPILER_VERSION_OUTPUT | \
   393         $SED -e 's/ *@<:@Uu@:>@sage:.*//'`
   394     COMPILER_VERSION_NUMBER=`$ECHO $COMPILER_VERSION_OUTPUT | \
   395         $SED -e "s/^.*@<:@ ,\t@:>@$COMPILER_NAME@<:@ ,\t@:>@\(@<:@1-9@:>@\.@<:@0-9@:>@@<:@0-9@:>@*\).*/\1/"`
   396   elif test  "x$TOOLCHAIN_TYPE" = xxlc; then
   397     # xlc -qversion output typically looks like
   398     #     IBM XL C/C++ for AIX, V11.1 (5724-X13)
   399     #     Version: 11.01.0000.0015
   400     COMPILER_VERSION_OUTPUT=`$COMPILER -qversion 2>&1`
   401     # Check that this is likely to be the IBM XL C compiler.
   402     $ECHO "$COMPILER_VERSION_OUTPUT" | $GREP "IBM XL C" > /dev/null
   403     if test $? -ne 0; then
   404       ALT_VERSION_OUTPUT=`$COMPILER --version 2>&1`
   405       AC_MSG_NOTICE([The $COMPILER_NAME compiler (located as $COMPILER) does not seem to be the required $TOOLCHAIN_TYPE compiler.])
   406       AC_MSG_NOTICE([The result from running with -qversion was: "$COMPILER_VERSION_OUTPUT"])
   407       AC_MSG_NOTICE([The result from running with --version was: "$ALT_VERSION_OUTPUT"])
   408       AC_MSG_ERROR([A $TOOLCHAIN_TYPE compiler is required. Try setting --with-tools-dir.])
   409     fi
   410     # Collapse compiler output into a single line
   411     COMPILER_VERSION_STRING=`$ECHO $COMPILER_VERSION_OUTPUT`
   412     COMPILER_VERSION_NUMBER=`$ECHO $COMPILER_VERSION_OUTPUT | \
   413         $SED -e 's/^.*, V\(@<:@1-9@:>@@<:@0-9.@:>@*\).*$/\1/'`
   414   elif test  "x$TOOLCHAIN_TYPE" = xmicrosoft; then
   415     # There is no specific version flag, but all output starts with a version string.
   416     # First line typically looks something like:
   417     # Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 16.00.40219.01 for 80x86
   418     COMPILER_VERSION_OUTPUT=`$COMPILER 2>&1 | $HEAD -n 1 | $TR -d '\r'`
   419     # Check that this is likely to be Microsoft CL.EXE.
   420     $ECHO "$COMPILER_VERSION_OUTPUT" | $GREP "Microsoft.*Compiler" > /dev/null
   421     if test $? -ne 0; then
   422       AC_MSG_NOTICE([The $COMPILER_NAME compiler (located as $COMPILER) does not seem to be the required $TOOLCHAIN_TYPE compiler.])
   423       AC_MSG_NOTICE([The result from running it was: "$COMPILER_VERSION_OUTPUT"])
   424       AC_MSG_ERROR([A $TOOLCHAIN_TYPE compiler is required. Try setting --with-tools-dir.])
   425     fi
   426     # Collapse compiler output into a single line
   427     COMPILER_VERSION_STRING=`$ECHO $COMPILER_VERSION_OUTPUT`
   428     COMPILER_VERSION_NUMBER=`$ECHO $COMPILER_VERSION_OUTPUT | \
   429         $SED -e 's/^.*ersion.\(@<:@1-9@:>@@<:@0-9.@:>@*\) .*$/\1/'`
   430   elif test  "x$TOOLCHAIN_TYPE" = xgcc; then
   431     # gcc --version output typically looks like
   432     #     gcc (Ubuntu/Linaro 4.8.1-10ubuntu9) 4.8.1
   433     #     Copyright (C) 2013 Free Software Foundation, Inc.
   434     #     This is free software; see the source for copying conditions.  There is NO
   435     #     warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   436     COMPILER_VERSION_OUTPUT=`$COMPILER --version 2>&1`
   437     # Check that this is likely to be GCC.
   438     $ECHO "$COMPILER_VERSION_OUTPUT" | $GREP "Free Software Foundation" > /dev/null
   439     if test $? -ne 0; then
   440       AC_MSG_NOTICE([The $COMPILER_NAME compiler (located as $COMPILER) does not seem to be the required $TOOLCHAIN_TYPE compiler.])
   441       AC_MSG_NOTICE([The result from running with --version was: "$COMPILER_VERSION"])
   442       AC_MSG_ERROR([A $TOOLCHAIN_TYPE compiler is required. Try setting --with-tools-dir.])
   443     fi
   444     # Remove Copyright and legalese from version string, and
   445     # collapse into a single line
   446     COMPILER_VERSION_STRING=`$ECHO $COMPILER_VERSION_OUTPUT | \
   447         $SED -e 's/ *Copyright .*//'`
   448     COMPILER_VERSION_NUMBER=`$ECHO $COMPILER_VERSION_OUTPUT | \
   449         $SED -e 's/^.* \(@<:@1-9@:>@\.@<:@0-9.@:>@*\) .*$/\1/'`
   450   elif test  "x$TOOLCHAIN_TYPE" = xclang; then
   451     # clang --version output typically looks like
   452     #    Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
   453     #    clang version 3.3 (tags/RELEASE_33/final)
   454     # or
   455     #    Debian clang version 3.2-7ubuntu1 (tags/RELEASE_32/final) (based on LLVM 3.2)
   456     #    Target: x86_64-pc-linux-gnu
   457     #    Thread model: posix
   458     COMPILER_VERSION_OUTPUT=`$COMPILER --version 2>&1`
   459     # Check that this is likely to be clang
   460     $ECHO "$COMPILER_VERSION_OUTPUT" | $GREP "clang" > /dev/null
   461     if test $? -ne 0; then
   462       AC_MSG_NOTICE([The $COMPILER_NAME compiler (located as $COMPILER) does not seem to be the required $TOOLCHAIN_TYPE compiler.])
   463       AC_MSG_NOTICE([The result from running with --version was: "$COMPILER_VERSION_OUTPUT"])
   464       AC_MSG_ERROR([A $TOOLCHAIN_TYPE compiler is required. Try setting --with-tools-dir.])
   465     fi
   466     # Collapse compiler output into a single line
   467     COMPILER_VERSION_STRING=`$ECHO $COMPILER_VERSION_OUTPUT`
   468     COMPILER_VERSION_NUMBER=`$ECHO $COMPILER_VERSION_OUTPUT | \
   469         $SED -e 's/^.*clang version \(@<:@1-9@:>@@<:@0-9.@:>@*\).*$/\1/'`
   471   else
   472       AC_MSG_ERROR([Unknown toolchain type $TOOLCHAIN_TYPE.])
   473   fi
   474   # This sets CC_VERSION_NUMBER or CXX_VERSION_NUMBER. (This comment is a grep marker)
   475   $1_VERSION_NUMBER="$COMPILER_VERSION_NUMBER"
   476   # This sets CC_VERSION_STRING or CXX_VERSION_STRING. (This comment is a grep marker)
   477   $1_VERSION_STRING="$COMPILER_VERSION_STRING"
   479   AC_MSG_NOTICE([Using $TOOLCHAIN_TYPE $COMPILER_NAME compiler version $COMPILER_VERSION_NUMBER @<:@$COMPILER_VERSION_STRING@:>@])
   480 ])
   483 # Try to locate the given C or C++ compiler in the path, or otherwise.
   484 #
   485 # $1 = compiler to test (CC or CXX)
   486 # $2 = human readable name of compiler (C or C++)
   487 # $3 = list of compiler names to search for
   488 AC_DEFUN([TOOLCHAIN_FIND_COMPILER],
   489 [
   490   COMPILER_NAME=$2
   491   SEARCH_LIST="$3"
   493   if test "x[$]$1" != x; then
   494     # User has supplied compiler name already, always let that override.
   495     AC_MSG_NOTICE([Will use user supplied compiler $1=[$]$1])
   496     if test "x`basename [$]$1`" = "x[$]$1"; then
   497       # A command without a complete path is provided, search $PATH.
   499       AC_PATH_PROGS(POTENTIAL_$1, [$]$1)
   500       if test "x$POTENTIAL_$1" != x; then
   501         $1=$POTENTIAL_$1
   502       else
   503         AC_MSG_ERROR([User supplied compiler $1=[$]$1 could not be found])
   504       fi
   505     else
   506       # Otherwise it might already be a complete path
   507       if test ! -x "[$]$1"; then
   508         AC_MSG_ERROR([User supplied compiler $1=[$]$1 does not exist])
   509       fi
   510     fi
   511   else
   512     # No user supplied value. Locate compiler ourselves.
   514     # If we are cross compiling, assume cross compilation tools follows the
   515     # cross compilation standard where they are prefixed with the autoconf
   516     # standard name for the target. For example the binary
   517     # i686-sun-solaris2.10-gcc will cross compile for i686-sun-solaris2.10.
   518     # If we are not cross compiling, then the default compiler name will be
   519     # used.
   521     $1=
   522     # If TOOLS_DIR is set, check for all compiler names in there first
   523     # before checking the rest of the PATH.
   524     # FIXME: Now that we prefix the TOOLS_DIR to the PATH in the PRE_DETECTION
   525     # step, this should not be necessary.
   526     if test -n "$TOOLS_DIR"; then
   527       PATH_save="$PATH"
   528       PATH="$TOOLS_DIR"
   529       AC_PATH_PROGS(TOOLS_DIR_$1, $3)
   530       $1=$TOOLS_DIR_$1
   531       PATH="$PATH_save"
   532     fi
   534     # AC_PATH_PROGS can't be run multiple times with the same variable,
   535     # so create a new name for this run.
   536     if test "x[$]$1" = x; then
   537       AC_PATH_PROGS(POTENTIAL_$1, $3)
   538       $1=$POTENTIAL_$1
   539     fi
   541     if test "x[$]$1" = x; then
   542       HELP_MSG_MISSING_DEPENDENCY([devkit])
   543       AC_MSG_ERROR([Could not find a $COMPILER_NAME compiler. $HELP_MSG])
   544     fi
   545   fi
   547   # Now we have a compiler binary in $1. Make sure it's okay.
   548   BASIC_FIXUP_EXECUTABLE($1)
   549   TEST_COMPILER="[$]$1"
   550   # Don't remove symbolic links on AIX because 'xlc_r' and 'xlC_r' may all be links
   551   # to 'xlc' but it is crucial that we invoke the compiler with the right name!
   552   if test "x$OPENJDK_BUILD_OS" != xaix; then
   553     # FIXME: This test should not be needed anymore; we don't do that for any platform.
   554     AC_MSG_CHECKING([resolved symbolic links for $1])
   555     BASIC_REMOVE_SYMBOLIC_LINKS(TEST_COMPILER)
   556     AC_MSG_RESULT([$TEST_COMPILER])
   557   fi
   558   AC_MSG_CHECKING([if $1 is disguised ccache])
   560   COMPILER_BASENAME=`$BASENAME "$TEST_COMPILER"`
   561   if test "x$COMPILER_BASENAME" = "xccache"; then
   562     AC_MSG_RESULT([yes, trying to find proper $COMPILER_NAME compiler])
   563     # We /usr/lib/ccache in the path, so cc is a symlink to /usr/bin/ccache.
   564     # We want to control ccache invocation ourselves, so ignore this cc and try
   565     # searching again.
   567     # Remove the path to the fake ccache cc from the PATH
   568     RETRY_COMPILER_SAVED_PATH="$PATH"
   569     COMPILER_DIRNAME=`$DIRNAME [$]$1`
   570     PATH="`$ECHO $PATH | $SED -e "s,$COMPILER_DIRNAME,,g" -e "s,::,:,g" -e "s,^:,,g"`"
   572     # Try again looking for our compiler
   573     AC_CHECK_TOOLS(PROPER_COMPILER_$1, $3)
   574     BASIC_FIXUP_EXECUTABLE(PROPER_COMPILER_$1)
   575     PATH="$RETRY_COMPILER_SAVED_PATH"
   577     AC_MSG_CHECKING([for resolved symbolic links for $1])
   578     BASIC_REMOVE_SYMBOLIC_LINKS(PROPER_COMPILER_$1)
   579     AC_MSG_RESULT([$PROPER_COMPILER_$1])
   580     $1="$PROPER_COMPILER_$1"
   581   else
   582     AC_MSG_RESULT([no, keeping $1])
   583     $1="$TEST_COMPILER"
   584   fi
   586   TOOLCHAIN_EXTRACT_COMPILER_VERSION([$1], [$COMPILER_NAME])
   587 ])
   589 # Detect the core components of the toolchain, i.e. the compilers (CC and CXX),
   590 # preprocessor (CPP and CXXCPP), the linker (LD), the assembler (AS) and the
   591 # archiver (AR). Verify that the compilers are correct according to the
   592 # toolchain type.
   593 AC_DEFUN_ONCE([TOOLCHAIN_DETECT_TOOLCHAIN_CORE],
   594 [
   595   #
   596   # Setup the compilers (CC and CXX)
   597   #
   598   TOOLCHAIN_FIND_COMPILER([CC], [C], $TOOLCHAIN_CC_BINARY)
   599   # Now that we have resolved CC ourself, let autoconf have its go at it
   600   AC_PROG_CC([$CC])
   602   TOOLCHAIN_FIND_COMPILER([CXX], [C++], $TOOLCHAIN_CXX_BINARY)
   603   # Now that we have resolved CXX ourself, let autoconf have its go at it
   604   AC_PROG_CXX([$CXX])
   606   # This is the compiler version number on the form X.Y[.Z]
   607   AC_SUBST(CC_VERSION_NUMBER)
   608   AC_SUBST(CXX_VERSION_NUMBER)
   610   TOOLCHAIN_PREPARE_FOR_VERSION_COMPARISONS
   612   #
   613   # Setup the preprocessor (CPP and CXXCPP)
   614   #
   615   AC_PROG_CPP
   616   BASIC_FIXUP_EXECUTABLE(CPP)
   617   AC_PROG_CXXCPP
   618   BASIC_FIXUP_EXECUTABLE(CXXCPP)
   620   #
   621   # Setup the linker (LD)
   622   #
   623   if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
   624     # In the Microsoft toolchain we have a separate LD command "link".
   625     # Make sure we reject /usr/bin/link (as determined in CYGWIN_LINK), which is
   626     # a cygwin program for something completely different.
   627     AC_CHECK_PROG([LD], [link],[link],,, [$CYGWIN_LINK])
   628     BASIC_FIXUP_EXECUTABLE(LD)
   629     # Verify that we indeed succeeded with this trick.
   630     AC_MSG_CHECKING([if the found link.exe is actually the Visual Studio linker])
   631     "$LD" --version > /dev/null
   632     if test $? -eq 0 ; then
   633       AC_MSG_RESULT([no])
   634       AC_MSG_ERROR([This is the Cygwin link tool. Please check your PATH and rerun configure.])
   635     else
   636       AC_MSG_RESULT([yes])
   637     fi
   638     LDCXX="$LD"
   639   else
   640     # All other toolchains use the compiler to link.
   641     LD="$CC"
   642     LDCXX="$CXX"
   643   fi
   644   AC_SUBST(LD)
   645   # FIXME: it should be CXXLD, according to standard (cf CXXCPP)
   646   AC_SUBST(LDCXX)
   648   #
   649   # Setup the assembler (AS)
   650   #
   651   if test "x$OPENJDK_TARGET_OS" = xsolaris; then
   652     # FIXME: should this really be solaris, or solstudio?
   653     BASIC_PATH_PROGS(AS, as)
   654     BASIC_FIXUP_EXECUTABLE(AS)
   655   else
   656     # FIXME: is this correct for microsoft?
   657     AS="$CC -c"
   658   fi
   659   AC_SUBST(AS)
   661   #
   662   # Setup the archiver (AR)
   663   #
   664   if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
   665     # The corresponding ar tool is lib.exe (used to create static libraries)
   666     AC_CHECK_PROG([AR], [lib],[lib],,,)
   667   else
   668     BASIC_CHECK_TOOLS(AR, ar)
   669   fi
   670   BASIC_FIXUP_EXECUTABLE(AR)
   671 ])
   673 # Setup additional tools that is considered a part of the toolchain, but not the
   674 # core part. Many of these are highly platform-specific and do not exist,
   675 # and/or are not needed on all platforms.
   676 AC_DEFUN_ONCE([TOOLCHAIN_DETECT_TOOLCHAIN_EXTRA],
   677 [
   678   if test "x$OPENJDK_TARGET_OS" = "xmacosx"; then
   679     AC_PROG_OBJC
   680     BASIC_FIXUP_EXECUTABLE(OBJC)
   681     BASIC_PATH_PROGS(LIPO, lipo)
   682     BASIC_FIXUP_EXECUTABLE(LIPO)
   683   else
   684     OBJC=
   685   fi
   687   if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
   688     AC_CHECK_PROG([MT], [mt], [mt],,, [/usr/bin/mt])
   689     BASIC_FIXUP_EXECUTABLE(MT)
   690     # Setup the resource compiler (RC)
   691     AC_CHECK_PROG([RC], [rc], [rc],,, [/usr/bin/rc])
   692     BASIC_FIXUP_EXECUTABLE(RC)
   693     AC_CHECK_PROG([DUMPBIN], [dumpbin], [dumpbin],,,)
   694     BASIC_FIXUP_EXECUTABLE(DUMPBIN)
   695   fi
   697   if test "x$OPENJDK_TARGET_OS" = xsolaris; then
   698     BASIC_PATH_PROGS(STRIP, strip)
   699     BASIC_FIXUP_EXECUTABLE(STRIP)
   700     BASIC_PATH_PROGS(NM, nm)
   701     BASIC_FIXUP_EXECUTABLE(NM)
   702     BASIC_PATH_PROGS(GNM, gnm)
   703     BASIC_FIXUP_EXECUTABLE(GNM)
   705     BASIC_PATH_PROGS(MCS, mcs)
   706     BASIC_FIXUP_EXECUTABLE(MCS)
   707   elif test "x$OPENJDK_TARGET_OS" != xwindows; then
   708     # FIXME: we should unify this with the solaris case above.
   709     BASIC_CHECK_TOOLS(STRIP, strip)
   710     BASIC_FIXUP_EXECUTABLE(STRIP)
   711     AC_PATH_PROG(OTOOL, otool)
   712     if test "x$OTOOL" = "x"; then
   713       OTOOL="true"
   714     fi
   715     BASIC_CHECK_TOOLS(NM, nm)
   716     BASIC_FIXUP_EXECUTABLE(NM)
   717     GNM="$NM"
   718     AC_SUBST(GNM)
   719   fi
   721   # objcopy is used for moving debug symbols to separate files when
   722   # full debug symbols are enabled.
   723   if test "x$OPENJDK_TARGET_OS" = xsolaris || test "x$OPENJDK_TARGET_OS" = xlinux; then
   724     BASIC_CHECK_TOOLS(OBJCOPY, [gobjcopy objcopy])
   725     # Only call fixup if objcopy was found.
   726     if test -n "$OBJCOPY"; then
   727       BASIC_FIXUP_EXECUTABLE(OBJCOPY)
   728     fi
   729   fi
   731   BASIC_CHECK_TOOLS(OBJDUMP, [gobjdump objdump])
   732   if test "x$OBJDUMP" != x; then
   733     # Only used for compare.sh; we can live without it. BASIC_FIXUP_EXECUTABLE
   734     # bails if argument is missing.
   735     BASIC_FIXUP_EXECUTABLE(OBJDUMP)
   736   fi
   737 ])
   739 # Setup the build tools (i.e, the compiler and linker used to build programs
   740 # that should be run on the build platform, not the target platform, as a build
   741 # helper). Since the non-cross-compile case uses the normal, target compilers
   742 # for this, we can only do this after these have been setup.
   743 AC_DEFUN_ONCE([TOOLCHAIN_SETUP_BUILD_COMPILERS],
   744 [
   745   if test "x$COMPILE_TYPE" = "xcross"; then
   746     # Now we need to find a C/C++ compiler that can build executables for the
   747     # build platform. We can't use the AC_PROG_CC macro, since it can only be
   748     # used once. Also, we need to do this without adding a tools dir to the
   749     # path, otherwise we might pick up cross-compilers which don't use standard
   750     # naming.
   752     # FIXME: we should list the discovered compilers as an exclude pattern!
   753     # If we do that, we can do this detection before POST_DETECTION, and still
   754     # find the build compilers in the tools dir, if needed.
   755     BASIC_PATH_PROGS(BUILD_CC, [cl cc gcc])
   756     BASIC_FIXUP_EXECUTABLE(BUILD_CC)
   757     BASIC_PATH_PROGS(BUILD_CXX, [cl CC g++])
   758     BASIC_FIXUP_EXECUTABLE(BUILD_CXX)
   759     BASIC_PATH_PROGS(BUILD_LD, ld)
   760     BASIC_FIXUP_EXECUTABLE(BUILD_LD)
   761   else
   762     # If we are not cross compiling, use the normal target compilers for
   763     # building the build platform executables.
   764     BUILD_CC="$CC"
   765     BUILD_CXX="$CXX"
   766     BUILD_LD="$LD"
   767   fi
   768 ])
   770 # Setup legacy variables that are still needed as alternative ways to refer to
   771 # parts of the toolchain.
   772 AC_DEFUN_ONCE([TOOLCHAIN_SETUP_LEGACY],
   773 [
   774   if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
   775     # For hotspot, we need these in Windows mixed path,
   776     # so rewrite them all. Need added .exe suffix.
   777     HOTSPOT_CXX="$CXX.exe"
   778     HOTSPOT_LD="$LD.exe"
   779     HOTSPOT_MT="$MT.exe"
   780     HOTSPOT_RC="$RC.exe"
   781     BASIC_WINDOWS_REWRITE_AS_WINDOWS_MIXED_PATH(HOTSPOT_CXX)
   782     BASIC_WINDOWS_REWRITE_AS_WINDOWS_MIXED_PATH(HOTSPOT_LD)
   783     BASIC_WINDOWS_REWRITE_AS_WINDOWS_MIXED_PATH(HOTSPOT_MT)
   784     BASIC_WINDOWS_REWRITE_AS_WINDOWS_MIXED_PATH(HOTSPOT_RC)
   785     AC_SUBST(HOTSPOT_MT)
   786     AC_SUBST(HOTSPOT_RC)
   787   else
   788     HOTSPOT_CXX="$CXX"
   789     HOTSPOT_LD="$LD"
   790   fi
   791   AC_SUBST(HOTSPOT_CXX)
   792   AC_SUBST(HOTSPOT_LD)
   794   if test  "x$TOOLCHAIN_TYPE" = xclang; then
   795     USE_CLANG=true
   796   fi
   797   AC_SUBST(USE_CLANG)
   799   # LDEXE is the linker to use, when creating executables. Not really used.
   800   # FIXME: These should just be removed!
   801   LDEXE="$LD"
   802   LDEXECXX="$LDCXX"
   803   AC_SUBST(LDEXE)
   804   AC_SUBST(LDEXECXX)
   805 ])
   807 # Do some additional checks on the detected tools.
   808 AC_DEFUN_ONCE([TOOLCHAIN_MISC_CHECKS],
   809  [
   810   # The package path is used only on macosx?
   811   # FIXME: clean this up, and/or move it elsewhere.
   812   PACKAGE_PATH=/opt/local
   813   AC_SUBST(PACKAGE_PATH)
   815   # Check for extra potential brokenness.
   816   if test  "x$TOOLCHAIN_TYPE" = xmicrosoft; then
   817     # On Windows, double-check that we got the right compiler.
   818     CC_VERSION_OUTPUT=`$CC 2>&1 | $HEAD -n 1 | $TR -d '\r'`
   819     COMPILER_CPU_TEST=`$ECHO $CC_VERSION_OUTPUT | $SED -n "s/^.* \(.*\)$/\1/p"`
   820     if test "x$OPENJDK_TARGET_CPU" = "xx86"; then
   821       if test "x$COMPILER_CPU_TEST" != "x80x86"; then
   822         AC_MSG_ERROR([Target CPU mismatch. We are building for $OPENJDK_TARGET_CPU but CL is for "$COMPILER_CPU_TEST"; expected "80x86".])
   823       fi
   824     elif test "x$OPENJDK_TARGET_CPU" = "xx86_64"; then
   825       if test "x$COMPILER_CPU_TEST" != "xx64"; then
   826         AC_MSG_ERROR([Target CPU mismatch. We are building for $OPENJDK_TARGET_CPU but CL is for "$COMPILER_CPU_TEST"; expected "x64".])
   827       fi
   828     fi
   829   fi
   831   if test "x$TOOLCHAIN_TYPE" = xgcc; then
   832     # If this is a --hash-style=gnu system, use --hash-style=both, why?
   833     HAS_GNU_HASH=`$CC -dumpspecs 2>/dev/null | $GREP 'hash-style=gnu'`
   834     # This is later checked when setting flags.
   835   fi
   837   # Check for broken SuSE 'ld' for which 'Only anonymous version tag is allowed
   838   # in executable.'
   839   USING_BROKEN_SUSE_LD=no
   840   if test "x$OPENJDK_TARGET_OS" = xlinux && test "x$TOOLCHAIN_TYPE" = xgcc; then
   841     AC_MSG_CHECKING([for broken SuSE 'ld' which only understands anonymous version tags in executables])
   842     echo "SUNWprivate_1.1 { local: *; };" > version-script.map
   843     echo "int main() { }" > main.c
   844     if $CXX -Xlinker -version-script=version-script.map main.c 2>&AS_MESSAGE_LOG_FD >&AS_MESSAGE_LOG_FD; then
   845       AC_MSG_RESULT(no)
   846       USING_BROKEN_SUSE_LD=no
   847     else
   848       AC_MSG_RESULT(yes)
   849       USING_BROKEN_SUSE_LD=yes
   850     fi
   851     rm -rf version-script.map main.c
   852   fi
   853   AC_SUBST(USING_BROKEN_SUSE_LD)
   854 ])
   856 # Setup the JTReg Regression Test Harness.
   857 AC_DEFUN_ONCE([TOOLCHAIN_SETUP_JTREG],
   858 [
   859   AC_ARG_WITH(jtreg, [AS_HELP_STRING([--with-jtreg],
   860       [Regression Test Harness @<:@probed@:>@])],
   861       [],
   862       [with_jtreg=no])
   864   if test "x$with_jtreg" = xno; then
   865     # jtreg disabled
   866     AC_MSG_CHECKING([for jtreg])
   867     AC_MSG_RESULT(no)
   868   else
   869     if test "x$with_jtreg" != xyes; then
   870       # with path specified.
   871       JT_HOME="$with_jtreg"
   872     fi
   874     if test "x$JT_HOME" != x; then
   875       AC_MSG_CHECKING([for jtreg])
   877       # use JT_HOME enviroment var.
   878       BASIC_FIXUP_PATH([JT_HOME])
   880       # jtreg win32 script works for everybody
   881       JTREGEXE="$JT_HOME/bin/jtreg"
   883       if test ! -f "$JTREGEXE"; then
   884         AC_MSG_ERROR([JTReg executable does not exist: $JTREGEXE])
   885       fi
   887       AC_MSG_RESULT($JTREGEXE)
   888     else
   889       # try to find jtreg on path
   890       BASIC_REQUIRE_PROGS(JTREGEXE, jtreg)
   891       JT_HOME="`$DIRNAME $JTREGEXE`"
   892     fi
   893   fi
   895   AC_SUBST(JT_HOME)
   896   AC_SUBST(JTREGEXE)
   897 ])

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