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 #
  25 
  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 ########################################################################
  34 
  35 
  36 # All valid toolchains, regardless of platform (used by help.m4)
  37 VALID_TOOLCHAINS_all="gcc clang solstudio xlc microsoft"
  38 
  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"
  45 
  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++"
  52 
  53 # Minimum supported versions, empty means unspecified
  54 TOOLCHAIN_MINIMUM_VERSION_clang="3.2"
  55 TOOLCHAIN_MINIMUM_VERSION_gcc="4.8"
  56 TOOLCHAIN_MINIMUM_VERSION_microsoft="16.00.30319.01" # VS2010
  57 TOOLCHAIN_MINIMUM_VERSION_solstudio="5.13"
  58 TOOLCHAIN_MINIMUM_VERSION_xlc=""
  59 
  60 # Minimum supported linker versions, empty means unspecified
  61 TOOLCHAIN_MINIMUM_LD_VERSION_gcc="2.18"
  62 
  63 # Prepare the system so that TOOLCHAIN_CHECK_COMPILER_VERSION can be called.
  64 # Must have CC_VERSION_NUMBER and CXX_VERSION_NUMBER.
  65 # $1 - optional variable prefix for compiler and version variables (BUILD_)
  66 # $2 - optional variable prefix for comparable variable (OPENJDK_BUILD_)
  67 AC_DEFUN([TOOLCHAIN_PREPARE_FOR_VERSION_COMPARISONS],
  68 [
  69   if test "x[$]$1CC_VERSION_NUMBER" != "x[$]$1CXX_VERSION_NUMBER"; then
  70     AC_MSG_WARN([C and C++ compiler have different version numbers, [$]$1CC_VERSION_NUMBER vs [$]$1CXX_VERSION_NUMBER.])
  71     AC_MSG_WARN([This typically indicates a broken setup, and is not supported])
  72   fi
  73 
  74   # We only check CC_VERSION_NUMBER since we assume CXX_VERSION_NUMBER is equal.
  75   if [ [[ "[$]$1CC_VERSION_NUMBER" =~ (.*\.){4} ]] ]; then
  76     AC_MSG_WARN([C compiler version number has more than four parts (W.X.Y.Z): [$]$1CC_VERSION_NUMBER. Comparisons might be wrong.])
  77   fi
  78 
  79   if [ [[  "[$]$1CC_VERSION_NUMBER" =~ [0-9]{6} ]] ]; then
  80     AC_MSG_WARN([C compiler version number has a part larger than 99999: [$]$1CC_VERSION_NUMBER. Comparisons might be wrong.])
  81   fi
  82 
  83   $2COMPARABLE_ACTUAL_VERSION=`$AWK -F. '{ printf("%05d%05d%05d%05d\n", [$]1, [$]2, [$]3, [$]4) }' <<< "[$]$1CC_VERSION_NUMBER"`
  84 ])
  85 
  86 # Check if the configured compiler (C and C++) is of a specific version or
  87 # newer. TOOLCHAIN_PREPARE_FOR_VERSION_COMPARISONS must have been called before.
  88 #
  89 # Arguments:
  90 #   VERSION:   The version string to check against the found version
  91 #   IF_AT_LEAST:   block to run if the compiler is at least this version (>=)
  92 #   IF_OLDER_THAN:   block to run if the compiler is older than this version (<)
  93 #   PREFIX:   Optional variable prefix for compiler to compare version for (OPENJDK_BUILD_)
  94 BASIC_DEFUN_NAMED([TOOLCHAIN_CHECK_COMPILER_VERSION],
  95     [*VERSION PREFIX IF_AT_LEAST IF_OLDER_THAN], [$@],
  96 [
  97   # Need to assign to a variable since m4 is blocked from modifying parts in [].
  98   REFERENCE_VERSION=ARG_VERSION
  99 
 100   if [ [[ "$REFERENCE_VERSION" =~ (.*\.){4} ]] ]; then
 101     AC_MSG_ERROR([Internal error: Cannot compare to ARG_VERSION, only four parts (W.X.Y.Z) is supported])
 102   fi
 103 
 104   if [ [[ "$REFERENCE_VERSION" =~ [0-9]{6} ]] ]; then
 105     AC_MSG_ERROR([Internal error: Cannot compare to ARG_VERSION, only parts < 99999 is supported])
 106   fi
 107 
 108   # Version comparison method inspired by http://stackoverflow.com/a/24067243
 109   COMPARABLE_REFERENCE_VERSION=`$AWK -F. '{ printf("%05d%05d%05d%05d\n", [$]1, [$]2, [$]3, [$]4) }' <<< "$REFERENCE_VERSION"`
 110 
 111   if test [$]ARG_PREFIX[COMPARABLE_ACTUAL_VERSION] -ge $COMPARABLE_REFERENCE_VERSION ; then
 112     :
 113     ARG_IF_AT_LEAST
 114   else
 115     :
 116     ARG_IF_OLDER_THAN
 117   fi
 118 ])
 119 
 120 # Prepare the system so that TOOLCHAIN_CHECK_COMPILER_VERSION can be called.
 121 # Must have LD_VERSION_NUMBER.
 122 # $1 - optional variable prefix for compiler and version variables (BUILD_)
 123 # $2 - optional variable prefix for comparable variable (OPENJDK_BUILD_)
 124 AC_DEFUN([TOOLCHAIN_PREPARE_FOR_LD_VERSION_COMPARISONS],
 125 [
 126   if [ [[ "[$]$1LD_VERSION_NUMBER" =~ (.*\.){4} ]] ]; then
 127     AC_MSG_WARN([Linker version number has more than four parts (W.X.Y.Z): [$]$1LD_VERSION_NUMBER. Comparisons might be wrong.])
 128   fi
 129 
 130   if [ [[  "[$]$1LD_VERSION_NUMBER" =~ [0-9]{6} ]] ]; then
 131     AC_MSG_WARN([Linker version number has a part larger than 99999: [$]$1LD_VERSION_NUMBER. Comparisons might be wrong.])
 132   fi
 133 
 134   $2COMPARABLE_ACTUAL_LD_VERSION=`$AWK -F. '{ printf("%05d%05d%05d%05d\n", [$]1, [$]2, [$]3, [$]4) }' <<< "[$]$1LD_VERSION_NUMBER"`
 135 ])
 136 
 137 # Check if the configured linker is of a specific version or
 138 # newer. TOOLCHAIN_PREPARE_FOR_LD_VERSION_COMPARISONS must have been called before.
 139 #
 140 # Arguments:
 141 #   VERSION:   The version string to check against the found version
 142 #   IF_AT_LEAST:   block to run if the compiler is at least this version (>=)
 143 #   IF_OLDER_THAN:   block to run if the compiler is older than this version (<)
 144 #   PREFIX:   Optional variable prefix for compiler to compare version for (OPENJDK_BUILD_)
 145 BASIC_DEFUN_NAMED([TOOLCHAIN_CHECK_LINKER_VERSION],
 146     [*VERSION PREFIX IF_AT_LEAST IF_OLDER_THAN], [$@],
 147 [
 148   # Need to assign to a variable since m4 is blocked from modifying parts in [].
 149   REFERENCE_VERSION=ARG_VERSION
 150 
 151   if [ [[ "$REFERENCE_VERSION" =~ (.*\.){4} ]] ]; then
 152     AC_MSG_ERROR([Internal error: Cannot compare to ARG_VERSION, only four parts (W.X.Y.Z) is supported])
 153   fi
 154 
 155   if [ [[ "$REFERENCE_VERSION" =~ [0-9]{6} ]] ]; then
 156     AC_MSG_ERROR([Internal error: Cannot compare to ARG_VERSION, only parts < 99999 is supported])
 157   fi
 158 
 159   # Version comparison method inspired by http://stackoverflow.com/a/24067243
 160   COMPARABLE_REFERENCE_VERSION=`$AWK -F. '{ printf("%05d%05d%05d%05d\n", [$]1, [$]2, [$]3, [$]4) }' <<< "$REFERENCE_VERSION"`
 161 
 162   if test [$]ARG_PREFIX[COMPARABLE_ACTUAL_LD_VERSION] -ge $COMPARABLE_REFERENCE_VERSION ; then
 163     :
 164     ARG_IF_AT_LEAST
 165   else
 166     :
 167     ARG_IF_OLDER_THAN
 168   fi
 169 ])
 170 
 171 # Setup a number of variables describing how native output files are
 172 # named on this platform/toolchain.
 173 AC_DEFUN([TOOLCHAIN_SETUP_FILENAME_PATTERNS],
 174 [
 175   # Define filename patterns
 176   if test "x$OPENJDK_TARGET_OS" = xwindows; then
 177     LIBRARY_PREFIX=
 178     SHARED_LIBRARY_SUFFIX='.dll'
 179     STATIC_LIBRARY_SUFFIX='.lib'
 180     SHARED_LIBRARY='[$]1.dll'
 181     STATIC_LIBRARY='[$]1.lib'
 182     OBJ_SUFFIX='.obj'
 183   else
 184     LIBRARY_PREFIX=lib
 185     SHARED_LIBRARY_SUFFIX='.so'
 186     STATIC_LIBRARY_SUFFIX='.a'
 187     SHARED_LIBRARY='lib[$]1.so'
 188     STATIC_LIBRARY='lib[$]1.a'
 189     OBJ_SUFFIX='.o'
 190     if test "x$OPENJDK_TARGET_OS" = xmacosx; then
 191       # For full static builds, we're overloading the SHARED_LIBRARY
 192       # variables in order to limit the amount of changes required.
 193       # It would be better to remove SHARED and just use LIBRARY and
 194       # LIBRARY_SUFFIX for libraries that can be built either
 195       # shared or static and use STATIC_* for libraries that are
 196       # always built statically.
 197       if test "x$STATIC_BUILD" = xtrue; then
 198         SHARED_LIBRARY='lib[$]1.a'
 199         SHARED_LIBRARY_SUFFIX='.a'
 200       else
 201         SHARED_LIBRARY='lib[$]1.dylib'
 202         SHARED_LIBRARY_SUFFIX='.dylib'
 203       fi
 204     fi
 205   fi
 206 
 207   AC_SUBST(LIBRARY_PREFIX)
 208   AC_SUBST(SHARED_LIBRARY_SUFFIX)
 209   AC_SUBST(STATIC_LIBRARY_SUFFIX)
 210   AC_SUBST(SHARED_LIBRARY)
 211   AC_SUBST(STATIC_LIBRARY)
 212   AC_SUBST(OBJ_SUFFIX)
 213 ])
 214 
 215 # Determine which toolchain type to use, and make sure it is valid for this
 216 # platform. Setup various information about the selected toolchain.
 217 AC_DEFUN_ONCE([TOOLCHAIN_DETERMINE_TOOLCHAIN_TYPE],
 218 [
 219   AC_ARG_WITH(toolchain-type, [AS_HELP_STRING([--with-toolchain-type],
 220       [the toolchain type (or family) to use, use '--help' to show possible values @<:@platform dependent@:>@])])
 221 
 222   # Use indirect variable referencing
 223   toolchain_var_name=VALID_TOOLCHAINS_$OPENJDK_BUILD_OS
 224   VALID_TOOLCHAINS=${!toolchain_var_name}
 225 
 226   if test "x$OPENJDK_TARGET_OS" = xmacosx; then
 227     if test -n "$XCODEBUILD"; then
 228       # On Mac OS X, default toolchain to clang after Xcode 5
 229       XCODE_VERSION_OUTPUT=`"$XCODEBUILD" -version 2>&1 | $HEAD -n 1`
 230       $ECHO "$XCODE_VERSION_OUTPUT" | $GREP "Xcode " > /dev/null
 231       if test $? -ne 0; then
 232         AC_MSG_NOTICE([xcodebuild output: $XCODE_VERSION_OUTPUT])
 233         AC_MSG_ERROR([Failed to determine Xcode version.])
 234       fi
 235       XCODE_MAJOR_VERSION=`$ECHO $XCODE_VERSION_OUTPUT | \
 236           $SED -e 's/^Xcode \(@<:@1-9@:>@@<:@0-9.@:>@*\)/\1/' | \
 237           $CUT -f 1 -d .`
 238       AC_MSG_NOTICE([Xcode major version: $XCODE_MAJOR_VERSION])
 239       if test $XCODE_MAJOR_VERSION -ge 5; then
 240           DEFAULT_TOOLCHAIN="clang"
 241       else
 242           DEFAULT_TOOLCHAIN="gcc"
 243       fi
 244     else
 245       # If Xcode is not installed, but the command line tools are
 246       # then we can't run xcodebuild. On these systems we should
 247       # default to clang
 248       DEFAULT_TOOLCHAIN="clang"
 249     fi
 250   else
 251     # First toolchain type in the list is the default
 252     DEFAULT_TOOLCHAIN=${VALID_TOOLCHAINS%% *}
 253   fi
 254 
 255   if test "x$with_toolchain_type" = xlist; then
 256     # List all toolchains
 257     AC_MSG_NOTICE([The following toolchains are valid on this platform:])
 258     for toolchain in $VALID_TOOLCHAINS; do
 259       toolchain_var_name=TOOLCHAIN_DESCRIPTION_$toolchain
 260       TOOLCHAIN_DESCRIPTION=${!toolchain_var_name}
 261       $PRINTF "  %-10s  %s\n" $toolchain "$TOOLCHAIN_DESCRIPTION"
 262     done
 263 
 264     exit 0
 265   elif test "x$with_toolchain_type" != x; then
 266     # User override; check that it is valid
 267     if test "x${VALID_TOOLCHAINS/$with_toolchain_type/}" = "x${VALID_TOOLCHAINS}"; then
 268       AC_MSG_NOTICE([Toolchain type $with_toolchain_type is not valid on this platform.])
 269       AC_MSG_NOTICE([Valid toolchains: $VALID_TOOLCHAINS.])
 270       AC_MSG_ERROR([Cannot continue.])
 271     fi
 272     TOOLCHAIN_TYPE=$with_toolchain_type
 273   else
 274     # No flag given, use default
 275     TOOLCHAIN_TYPE=$DEFAULT_TOOLCHAIN
 276   fi
 277   AC_SUBST(TOOLCHAIN_TYPE)
 278 
 279   TOOLCHAIN_CC_BINARY_clang="clang"
 280   TOOLCHAIN_CC_BINARY_gcc="gcc"
 281   TOOLCHAIN_CC_BINARY_microsoft="cl$EXE_SUFFIX"
 282   TOOLCHAIN_CC_BINARY_solstudio="cc"
 283   TOOLCHAIN_CC_BINARY_xlc="xlc_r"
 284 
 285   TOOLCHAIN_CXX_BINARY_clang="clang++"
 286   TOOLCHAIN_CXX_BINARY_gcc="g++"
 287   TOOLCHAIN_CXX_BINARY_microsoft="cl$EXE_SUFFIX"
 288   TOOLCHAIN_CXX_BINARY_solstudio="CC"
 289   TOOLCHAIN_CXX_BINARY_xlc="xlC_r"
 290 
 291   # Use indirect variable referencing
 292   toolchain_var_name=TOOLCHAIN_DESCRIPTION_$TOOLCHAIN_TYPE
 293   TOOLCHAIN_DESCRIPTION=${!toolchain_var_name}
 294   toolchain_var_name=TOOLCHAIN_MINIMUM_VERSION_$TOOLCHAIN_TYPE
 295   TOOLCHAIN_MINIMUM_VERSION=${!toolchain_var_name}
 296   toolchain_var_name=TOOLCHAIN_MINIMUM_LD_VERSION_$TOOLCHAIN_TYPE
 297   TOOLCHAIN_MINIMUM_LD_VERSION=${!toolchain_var_name}
 298   toolchain_var_name=TOOLCHAIN_CC_BINARY_$TOOLCHAIN_TYPE
 299   TOOLCHAIN_CC_BINARY=${!toolchain_var_name}
 300   toolchain_var_name=TOOLCHAIN_CXX_BINARY_$TOOLCHAIN_TYPE
 301   TOOLCHAIN_CXX_BINARY=${!toolchain_var_name}
 302 
 303   TOOLCHAIN_SETUP_FILENAME_PATTERNS
 304 
 305   if test "x$TOOLCHAIN_TYPE" = "x$DEFAULT_TOOLCHAIN"; then
 306     AC_MSG_NOTICE([Using default toolchain $TOOLCHAIN_TYPE ($TOOLCHAIN_DESCRIPTION)])
 307   else
 308     AC_MSG_NOTICE([Using user selected toolchain $TOOLCHAIN_TYPE ($TOOLCHAIN_DESCRIPTION). Default toolchain is $DEFAULT_TOOLCHAIN.])
 309   fi
 310 ])
 311 
 312 # Before we start detecting the toolchain executables, we might need some
 313 # special setup, e.g. additional paths etc.
 314 AC_DEFUN_ONCE([TOOLCHAIN_PRE_DETECTION],
 315 [
 316   # FIXME: Is this needed?
 317   AC_LANG(C++)
 318 
 319   # Store the CFLAGS etc passed to the configure script.
 320   ORG_CFLAGS="$CFLAGS"
 321   ORG_CXXFLAGS="$CXXFLAGS"
 322 
 323   # autoconf magic only relies on PATH, so update it if tools dir is specified
 324   OLD_PATH="$PATH"
 325 
 326   # On Windows, we need to detect the visual studio installation first.
 327   # This will change the PATH, but we need to keep that new PATH even
 328   # after toolchain detection is done, since the compiler (on x86) uses
 329   # it for DLL resolution in runtime.
 330   if test "x$OPENJDK_BUILD_OS" = "xwindows" \
 331       && test "x$TOOLCHAIN_TYPE" = "xmicrosoft"; then
 332     TOOLCHAIN_SETUP_VISUAL_STUDIO_ENV
 333     if test "x$OPENJDK_BUILD_OS_ENV" = "xwindows.wsl"; then
 334       # Append VS_PATH. In WSL, VS_PATH will not contain the WSL env path needed
 335       # for using basic Unix tools, so need to keep the original PATH.
 336       BASIC_APPEND_TO_PATH(PATH, $VS_PATH)
 337       BASIC_APPEND_TO_PATH(WSLENV, "PATH/l:LIB:INCLUDE")
 338       export WSLENV
 339     else
 340       # Reset path to VS_PATH. It will include everything that was on PATH at the time we
 341       # ran TOOLCHAIN_SETUP_VISUAL_STUDIO_ENV.
 342       PATH="$VS_PATH"
 343     fi
 344     # The microsoft toolchain also requires INCLUDE and LIB to be set.
 345     export INCLUDE="$VS_INCLUDE"
 346     export LIB="$VS_LIB"
 347   else
 348     if test "x$XCODE_VERSION_OUTPUT" != x; then
 349       # For Xcode, we set the Xcode version as TOOLCHAIN_VERSION
 350       TOOLCHAIN_VERSION=`$ECHO $XCODE_VERSION_OUTPUT | $CUT -f 2 -d ' '`
 351       TOOLCHAIN_DESCRIPTION="$TOOLCHAIN_DESCRIPTION from Xcode $TOOLCHAIN_VERSION"
 352     else
 353       # Currently we do not define this for other toolchains. This might change as the need arise.
 354       TOOLCHAIN_VERSION=
 355     fi
 356   fi
 357   AC_SUBST(TOOLCHAIN_VERSION)
 358 
 359   # Finally add TOOLCHAIN_PATH at the beginning, to allow --with-tools-dir to
 360   # override all other locations.
 361   if test "x$TOOLCHAIN_PATH" != x; then
 362     PATH=$TOOLCHAIN_PATH:$PATH
 363   fi
 364 ])
 365 
 366 # Restore path, etc
 367 AC_DEFUN_ONCE([TOOLCHAIN_POST_DETECTION],
 368 [
 369   # Restore old path, except for the microsoft toolchain, which requires VS_PATH
 370   # to remain in place. Otherwise the compiler will not work in some siutations
 371   # in later configure checks.
 372   if test "x$TOOLCHAIN_TYPE" != "xmicrosoft"; then
 373     PATH="$OLD_PATH"
 374   fi
 375 
 376   # Restore the flags to the user specified values.
 377   # This is necessary since AC_PROG_CC defaults CFLAGS to "-g -O2"
 378   CFLAGS="$ORG_CFLAGS"
 379   CXXFLAGS="$ORG_CXXFLAGS"
 380 ])
 381 
 382 # Check if a compiler is of the toolchain type we expect, and save the version
 383 # information from it. If the compiler does not match the expected type,
 384 # this function will abort using AC_MSG_ERROR. If it matches, the version will
 385 # be stored in CC_VERSION_NUMBER/CXX_VERSION_NUMBER (as a dotted number), and
 386 # the full version string in CC_VERSION_STRING/CXX_VERSION_STRING.
 387 #
 388 # $1 = compiler to test (CC or CXX)
 389 # $2 = human readable name of compiler (C or C++)
 390 AC_DEFUN([TOOLCHAIN_EXTRACT_COMPILER_VERSION],
 391 [
 392   COMPILER=[$]$1
 393   COMPILER_NAME=$2
 394 
 395   if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
 396     # cc -V output typically looks like
 397     #     cc: Sun C 5.12 Linux_i386 2011/11/16
 398     # or
 399     #     cc: Studio 12.5 Sun C 5.14 SunOS_sparc 2016/05/31
 400     COMPILER_VERSION_OUTPUT=`$COMPILER -V 2>&1`
 401     # Check that this is likely to be the Solaris Studio cc.
 402     $ECHO "$COMPILER_VERSION_OUTPUT" | $GREP "^.* Sun $COMPILER_NAME" > /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 $TOOLCHAIN_TYPE compiler.])
 406       AC_MSG_NOTICE([The result from running with -V was: "$COMPILER_VERSION_OUTPUT"])
 407       AC_MSG_NOTICE([The result from running with --version was: "$ALT_VERSION_OUTPUT"])
 408       AC_MSG_ERROR([A $TOOLCHAIN_TYPE compiler is required. Try setting --with-tools-dir.])
 409     fi
 410     # Remove usage instructions (if present), and
 411     # collapse compiler output into a single line
 412     COMPILER_VERSION_STRING=`$ECHO $COMPILER_VERSION_OUTPUT | \
 413         $SED -e 's/ *@<:@Uu@:>@sage:.*//'`
 414     COMPILER_VERSION_NUMBER=`$ECHO $COMPILER_VERSION_OUTPUT | \
 415         $SED -e "s/^.*@<:@ ,\t@:>@$COMPILER_NAME@<:@ ,\t@:>@\(@<:@1-9@:>@\.@<:@0-9@:>@@<:@0-9@:>@*\).*/\1/"`
 416   elif test  "x$TOOLCHAIN_TYPE" = xxlc; then
 417     # xlc -qversion output typically looks like
 418     #     IBM XL C/C++ for AIX, V11.1 (5724-X13)
 419     #     Version: 11.01.0000.0015
 420     COMPILER_VERSION_OUTPUT=`$COMPILER -qversion 2>&1`
 421     # Check that this is likely to be the IBM XL C compiler.
 422     $ECHO "$COMPILER_VERSION_OUTPUT" | $GREP "IBM XL C" > /dev/null
 423     if test $? -ne 0; then
 424       ALT_VERSION_OUTPUT=`$COMPILER --version 2>&1`
 425       AC_MSG_NOTICE([The $COMPILER_NAME compiler (located as $COMPILER) does not seem to be the required $TOOLCHAIN_TYPE compiler.])
 426       AC_MSG_NOTICE([The result from running with -qversion was: "$COMPILER_VERSION_OUTPUT"])
 427       AC_MSG_NOTICE([The result from running with --version was: "$ALT_VERSION_OUTPUT"])
 428       AC_MSG_ERROR([A $TOOLCHAIN_TYPE compiler is required. Try setting --with-tools-dir.])
 429     fi
 430     # Collapse compiler output into a single line
 431     COMPILER_VERSION_STRING=`$ECHO $COMPILER_VERSION_OUTPUT`
 432     COMPILER_VERSION_NUMBER=`$ECHO $COMPILER_VERSION_OUTPUT | \
 433         $SED -e 's/^.*, V\(@<:@1-9@:>@@<:@0-9.@:>@*\).*$/\1/'`
 434   elif test  "x$TOOLCHAIN_TYPE" = xmicrosoft; then
 435     # There is no specific version flag, but all output starts with a version string.
 436     # First line typically looks something like:
 437     # Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 16.00.40219.01 for 80x86
 438     COMPILER_VERSION_OUTPUT=`"$COMPILER" 2>&1 | $GREP -v 'ERROR.*UtilTranslatePathList' | $HEAD -n 1 | $TR -d '\r'`
 439     # Check that this is likely to be Microsoft CL.EXE.
 440     $ECHO "$COMPILER_VERSION_OUTPUT" | $GREP "Microsoft.*Compiler" > /dev/null
 441     if test $? -ne 0; then
 442       AC_MSG_NOTICE([The $COMPILER_NAME compiler (located as $COMPILER) does not seem to be the required $TOOLCHAIN_TYPE compiler.])
 443       AC_MSG_NOTICE([The result from running it was: "$COMPILER_VERSION_OUTPUT"])
 444       AC_MSG_ERROR([A $TOOLCHAIN_TYPE compiler is required. Try setting --with-tools-dir.])
 445     fi
 446     # Collapse compiler output into a single line
 447     COMPILER_VERSION_STRING=`$ECHO $COMPILER_VERSION_OUTPUT`
 448     COMPILER_VERSION_NUMBER=`$ECHO $COMPILER_VERSION_OUTPUT | \
 449         $SED -e 's/^.*ersion.\(@<:@1-9@:>@@<:@0-9.@:>@*\) .*$/\1/'`
 450   elif test  "x$TOOLCHAIN_TYPE" = xgcc; then
 451     # gcc --version output typically looks like
 452     #     gcc (Ubuntu/Linaro 4.8.1-10ubuntu9) 4.8.1
 453     #     Copyright (C) 2013 Free Software Foundation, Inc.
 454     #     This is free software; see the source for copying conditions.  There is NO
 455     #     warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 456     COMPILER_VERSION_OUTPUT=`$COMPILER --version 2>&1`
 457     # Check that this is likely to be GCC.
 458     $ECHO "$COMPILER_VERSION_OUTPUT" | $GREP "Free Software Foundation" > /dev/null
 459     if test $? -ne 0; then
 460       AC_MSG_NOTICE([The $COMPILER_NAME compiler (located as $COMPILER) does not seem to be the required $TOOLCHAIN_TYPE compiler.])
 461       AC_MSG_NOTICE([The result from running with --version was: "$COMPILER_VERSION"])
 462       AC_MSG_ERROR([A $TOOLCHAIN_TYPE compiler is required. Try setting --with-tools-dir.])
 463     fi
 464     # Remove Copyright and legalese from version string, and
 465     # collapse into a single line
 466     COMPILER_VERSION_STRING=`$ECHO $COMPILER_VERSION_OUTPUT | \
 467         $SED -e 's/ *Copyright .*//'`
 468     COMPILER_VERSION_NUMBER=`$ECHO $COMPILER_VERSION_OUTPUT | \
 469         $SED -e 's/^.* \(@<:@1-9@:>@\.@<:@0-9.@:>@*\)@<:@^0-9.@:>@.*$/\1/'`
 470   elif test  "x$TOOLCHAIN_TYPE" = xclang; then
 471     # clang --version output typically looks like
 472     #    Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
 473     #    clang version 3.3 (tags/RELEASE_33/final)
 474     # or
 475     #    Debian clang version 3.2-7ubuntu1 (tags/RELEASE_32/final) (based on LLVM 3.2)
 476     #    Target: x86_64-pc-linux-gnu
 477     #    Thread model: posix
 478     COMPILER_VERSION_OUTPUT=`$COMPILER --version 2>&1`
 479     # Check that this is likely to be clang
 480     $ECHO "$COMPILER_VERSION_OUTPUT" | $GREP "clang" > /dev/null
 481     if test $? -ne 0; then
 482       AC_MSG_NOTICE([The $COMPILER_NAME compiler (located as $COMPILER) does not seem to be the required $TOOLCHAIN_TYPE compiler.])
 483       AC_MSG_NOTICE([The result from running with --version was: "$COMPILER_VERSION_OUTPUT"])
 484       AC_MSG_ERROR([A $TOOLCHAIN_TYPE compiler is required. Try setting --with-tools-dir.])
 485     fi
 486     # Collapse compiler output into a single line
 487     COMPILER_VERSION_STRING=`$ECHO $COMPILER_VERSION_OUTPUT`
 488     COMPILER_VERSION_NUMBER=`$ECHO $COMPILER_VERSION_OUTPUT | \
 489         $SED -e 's/^.* version \(@<:@1-9@:>@@<:@0-9.@:>@*\).*$/\1/'`
 490   else
 491       AC_MSG_ERROR([Unknown toolchain type $TOOLCHAIN_TYPE.])
 492   fi
 493   # This sets CC_VERSION_NUMBER or CXX_VERSION_NUMBER. (This comment is a grep marker)
 494   $1_VERSION_NUMBER="$COMPILER_VERSION_NUMBER"
 495   # This sets CC_VERSION_STRING or CXX_VERSION_STRING. (This comment is a grep marker)
 496   $1_VERSION_STRING="$COMPILER_VERSION_STRING"
 497 
 498   AC_MSG_NOTICE([Using $TOOLCHAIN_TYPE $COMPILER_NAME compiler version $COMPILER_VERSION_NUMBER @<:@$COMPILER_VERSION_STRING@:>@])
 499 ])
 500 
 501 # Try to locate the given C or C++ compiler in the path, or otherwise.
 502 #
 503 # $1 = compiler to test (CC or CXX)
 504 # $2 = human readable name of compiler (C or C++)
 505 # $3 = compiler name to search for
 506 AC_DEFUN([TOOLCHAIN_FIND_COMPILER],
 507 [
 508   COMPILER_NAME=$2
 509   SEARCH_LIST="$3"
 510 
 511   if test "x[$]$1" != x; then
 512     # User has supplied compiler name already, always let that override.
 513     AC_MSG_NOTICE([Will use user supplied compiler $1=[$]$1])
 514     if test "x`basename [$]$1`" = "x[$]$1"; then
 515       # A command without a complete path is provided, search $PATH.
 516 
 517       AC_PATH_PROGS(POTENTIAL_$1, [$]$1)
 518       if test "x$POTENTIAL_$1" != x; then
 519         $1=$POTENTIAL_$1
 520       else
 521         AC_MSG_ERROR([User supplied compiler $1=[$]$1 could not be found])
 522       fi
 523     else
 524       # Otherwise it might already be a complete path
 525       if test ! -x "[$]$1"; then
 526         AC_MSG_ERROR([User supplied compiler $1=[$]$1 does not exist])
 527       fi
 528     fi
 529   else
 530     # No user supplied value. Locate compiler ourselves.
 531 
 532     # If we are cross compiling, assume cross compilation tools follows the
 533     # cross compilation standard where they are prefixed with the autoconf
 534     # standard name for the target. For example the binary
 535     # i686-sun-solaris2.10-gcc will cross compile for i686-sun-solaris2.10.
 536     # If we are not cross compiling, then the default compiler name will be
 537     # used.
 538 
 539     $1=
 540     # If TOOLCHAIN_PATH is set, check for all compiler names in there first
 541     # before checking the rest of the PATH.
 542     # FIXME: Now that we prefix the TOOLS_DIR to the PATH in the PRE_DETECTION
 543     # step, this should not be necessary.
 544     if test -n "$TOOLCHAIN_PATH"; then
 545       PATH_save="$PATH"
 546       PATH="$TOOLCHAIN_PATH"
 547       AC_PATH_TOOL(TOOLCHAIN_PATH_$1, $SEARCH_LIST)
 548       $1=$TOOLCHAIN_PATH_$1
 549       PATH="$PATH_save"
 550     fi
 551 
 552     # AC_PATH_TOOL can't be run multiple times with the same variable,
 553     # so create a new name for this run.
 554     if test "x[$]$1" = x; then
 555       AC_PATH_TOOL(POTENTIAL_$1, $SEARCH_LIST)
 556       $1=$POTENTIAL_$1
 557     fi
 558 
 559     if test "x[$]$1" = x; then
 560       HELP_MSG_MISSING_DEPENDENCY([devkit])
 561       AC_MSG_ERROR([Could not find a $COMPILER_NAME compiler. $HELP_MSG])
 562     fi
 563   fi
 564 
 565   # Now we have a compiler binary in $1. Make sure it's okay.
 566   BASIC_FIXUP_EXECUTABLE($1)
 567   TEST_COMPILER="[$]$1"
 568 
 569   AC_MSG_CHECKING([resolved symbolic links for $1])
 570   SYMLINK_ORIGINAL="$TEST_COMPILER"
 571   BASIC_REMOVE_SYMBOLIC_LINKS(SYMLINK_ORIGINAL)
 572   if test "x$TEST_COMPILER" = "x$SYMLINK_ORIGINAL"; then
 573     AC_MSG_RESULT([no symlink])
 574   else
 575     AC_MSG_RESULT([$SYMLINK_ORIGINAL])
 576 
 577     # We can't handle ccache by gcc wrappers, since we need to know if we're
 578     # using ccache. Instead ccache usage must be controlled by a configure option.
 579     COMPILER_BASENAME=`$BASENAME "$SYMLINK_ORIGINAL"`
 580     if test "x$COMPILER_BASENAME" = "xccache"; then
 581       AC_MSG_NOTICE([Please use --enable-ccache instead of providing a wrapped compiler.])
 582       AC_MSG_ERROR([$TEST_COMPILER is a symbolic link to ccache. This is not supported.])
 583     fi
 584   fi
 585 
 586   TOOLCHAIN_EXTRACT_COMPILER_VERSION([$1], [$COMPILER_NAME])
 587 ])
 588 
 589 # Retrieve the linker version number and store it in LD_VERSION_NUMBER
 590 # (as a dotted number), and
 591 # the full version string in LD_VERSION_STRING.
 592 #
 593 # $1 = linker to test (LD or BUILD_LD)
 594 # $2 = human readable name of linker (Linker or BuildLinker)
 595 AC_DEFUN([TOOLCHAIN_EXTRACT_LD_VERSION],
 596 [
 597   LINKER=[$]$1
 598   LINKER_NAME="$2"
 599 
 600   if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
 601     # cc -Wl,-V output typically looks like
 602     #   ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.2329
 603 
 604     # solstudio cc requires us to have an existing file to pass as argument,
 605     # but it need not be a syntactically correct C file, so just use
 606     # ourself. :) The intermediate 'cat' is needed to stop ld from leaving
 607     # a lingering a.out (!).
 608     LINKER_VERSION_STRING=`$LD -Wl,-V $TOPDIR/configure 2>&1 | $CAT | $HEAD -n 1 | $SED -e 's/ld: //'`
 609     # Extract version number
 610     [ LINKER_VERSION_NUMBER=`$ECHO $LINKER_VERSION_STRING | \
 611         $SED -e 's/.* \([0-9][0-9]*\.[0-9][0-9]*\)-\([0-9][0-9]*\.[0-9][0-9]*\)/\1.\2/'` ]
 612   elif test  "x$TOOLCHAIN_TYPE" = xxlc; then
 613     LINKER_VERSION_STRING="Unknown"
 614     LINKER_VERSION_NUMBER="0.0"
 615   elif test  "x$TOOLCHAIN_TYPE" = xmicrosoft; then
 616     # There is no specific version flag, but all output starts with a version string.
 617     # First line typically looks something like:
 618     #   Microsoft (R) Incremental Linker Version 12.00.31101.0
 619     LINKER_VERSION_STRING=`$LD 2>&1 | $HEAD -n 1 | $TR -d '\r'`
 620     # Extract version number
 621     [ LINKER_VERSION_NUMBER=`$ECHO $LINKER_VERSION_STRING | \
 622         $SED -e 's/.* \([0-9][0-9]*\(\.[0-9][0-9]*\)*\).*/\1/'` ]
 623   elif test  "x$TOOLCHAIN_TYPE" = xgcc; then
 624     # gcc -Wl,-version output typically looks like
 625     #   GNU ld (GNU Binutils for Ubuntu) 2.26.1
 626     #   Copyright (C) 2015 Free Software Foundation, Inc.
 627     #   This program is free software; [...]
 628     LINKER_VERSION_STRING=`$LD -Wl,-version 2>&1 | $HEAD -n 1`
 629     # Extract version number
 630     [ LINKER_VERSION_NUMBER=`$ECHO $LINKER_VERSION_STRING | \
 631         $SED -e 's/.* \([0-9][0-9]*\(\.[0-9][0-9]*\)*\).*/\1/'` ]
 632   elif test  "x$TOOLCHAIN_TYPE" = xclang; then
 633     # clang -Wl,-v output typically looks like
 634     #   @(#)PROGRAM:ld  PROJECT:ld64-305
 635     #   configured to support archs: armv6 armv7 armv7s arm64 i386 x86_64 x86_64h armv6m armv7k armv7m armv7em (tvOS)
 636     #   Library search paths: [...]
 637     # or
 638     #   GNU ld (GNU Binutils for Ubuntu) 2.26.1
 639 
 640     LINKER_VERSION_STRING=`$LD -Wl,-v 2>&1 | $HEAD -n 1`
 641     # Check if we're using the GNU ld
 642     $ECHO "$LINKER_VERSION_STRING" | $GREP "GNU" > /dev/null
 643     if test $? -eq 0; then
 644       # Extract version number
 645       [ LINKER_VERSION_NUMBER=`$ECHO $LINKER_VERSION_STRING | \
 646           $SED -e 's/.* \([0-9][0-9]*\(\.[0-9][0-9]*\)*\).*/\1/'` ]
 647     else
 648       # Extract version number
 649       [ LINKER_VERSION_NUMBER=`$ECHO $LINKER_VERSION_STRING | \
 650           $SED -e 's/.*-\([0-9][0-9]*\)/\1/'` ]
 651     fi
 652   fi
 653 
 654   $1_VERSION_NUMBER="$LINKER_VERSION_NUMBER"
 655   $1_VERSION_STRING="$LINKER_VERSION_STRING"
 656 
 657   AC_MSG_NOTICE([Using $TOOLCHAIN_TYPE $LINKER_NAME version $LINKER_VERSION_NUMBER @<:@$LINKER_VERSION_STRING@:>@])
 658 ])
 659 
 660 # Detect the core components of the toolchain, i.e. the compilers (CC and CXX),
 661 # preprocessor (CPP and CXXCPP), the linker (LD), the assembler (AS) and the
 662 # archiver (AR). Verify that the compilers are correct according to the
 663 # toolchain type.
 664 AC_DEFUN_ONCE([TOOLCHAIN_DETECT_TOOLCHAIN_CORE],
 665 [
 666   #
 667   # Setup the compilers (CC and CXX)
 668   #
 669   TOOLCHAIN_FIND_COMPILER([CC], [C], $TOOLCHAIN_CC_BINARY)
 670   # Now that we have resolved CC ourself, let autoconf have its go at it
 671   AC_PROG_CC([$CC])
 672 
 673   TOOLCHAIN_FIND_COMPILER([CXX], [C++], $TOOLCHAIN_CXX_BINARY)
 674   # Now that we have resolved CXX ourself, let autoconf have its go at it
 675   AC_PROG_CXX([$CXX])
 676 
 677   # This is the compiler version number on the form X.Y[.Z]
 678   AC_SUBST(CC_VERSION_NUMBER)
 679   AC_SUBST(CXX_VERSION_NUMBER)
 680 
 681   TOOLCHAIN_PREPARE_FOR_VERSION_COMPARISONS
 682 
 683   if test "x$TOOLCHAIN_MINIMUM_VERSION" != x; then
 684     TOOLCHAIN_CHECK_COMPILER_VERSION(VERSION: $TOOLCHAIN_MINIMUM_VERSION,
 685         IF_OLDER_THAN: [
 686           AC_MSG_WARN([You are using $TOOLCHAIN_TYPE older than $TOOLCHAIN_MINIMUM_VERSION. This is not a supported configuration.])
 687         ]
 688     )
 689   fi
 690 
 691   #
 692   # Setup the preprocessor (CPP and CXXCPP)
 693   #
 694   AC_PROG_CPP
 695   BASIC_FIXUP_EXECUTABLE(CPP)
 696   AC_PROG_CXXCPP
 697   BASIC_FIXUP_EXECUTABLE(CXXCPP)
 698 
 699   #
 700   # Setup the linker (LD)
 701   #
 702   if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
 703     # In the Microsoft toolchain we have a separate LD command "link".
 704     # Make sure we reject /usr/bin/link (as determined in CYGWIN_LINK), which is
 705     # a cygwin program for something completely different.
 706     AC_CHECK_PROG([LD], [link$EXE_SUFFIX],[link$EXE_SUFFIX],,, [$CYGWIN_LINK])
 707     BASIC_FIXUP_EXECUTABLE(LD)
 708     # Verify that we indeed succeeded with this trick.
 709     AC_MSG_CHECKING([if the found link.exe is actually the Visual Studio linker])
 710     "$LD" --version > /dev/null
 711     if test $? -eq 0 ; then
 712       AC_MSG_RESULT([no])
 713       AC_MSG_ERROR([This is the Cygwin link tool. Please check your PATH and rerun configure.])
 714     else
 715       AC_MSG_RESULT([yes])
 716     fi
 717     LDCXX="$LD"
 718     # jaotc being a windows program expects the linker to be supplied with exe suffix.
 719     LD_JAOTC="$LD$EXE_SUFFIX"
 720   else
 721     # All other toolchains use the compiler to link.
 722     LD="$CC"
 723     LDCXX="$CXX"
 724     # jaotc expects 'ld' as the linker rather than the compiler.
 725     BASIC_CHECK_TOOLS([LD_JAOTC], ld)
 726     BASIC_FIXUP_EXECUTABLE(LD_JAOTC)
 727   fi
 728   AC_SUBST(LD)
 729   AC_SUBST(LD_JAOTC)
 730   # FIXME: it should be CXXLD, according to standard (cf CXXCPP)
 731   AC_SUBST(LDCXX)
 732 
 733   TOOLCHAIN_EXTRACT_LD_VERSION([LD], [linker])
 734   TOOLCHAIN_PREPARE_FOR_LD_VERSION_COMPARISONS
 735 
 736   if test "x$TOOLCHAIN_MINIMUM_LD_VERSION" != x; then
 737     TOOLCHAIN_CHECK_LINKER_VERSION(VERSION: $TOOLCHAIN_MINIMUM_LD_VERSION,
 738         IF_OLDER_THAN: [
 739           AC_MSG_WARN([You are using a linker older than $TOOLCHAIN_MINIMUM_LD_VERSION. This is not a supported configuration.])
 740         ]
 741     )
 742   fi
 743 
 744   #
 745   # Setup the assembler (AS)
 746   #
 747   if test "x$OPENJDK_TARGET_OS" = xsolaris; then
 748     BASIC_PATH_PROGS(AS, as)
 749     BASIC_FIXUP_EXECUTABLE(AS)
 750     if test "x$AS" = x; then
 751       AC_MSG_ERROR([Solaris assembler (as) is required. Please install via "pkg install pkg:/developer/assembler".])
 752     fi
 753   else
 754     # FIXME: is this correct for microsoft?
 755     AS="$CC -c"
 756   fi
 757   AC_SUBST(AS)
 758 
 759   #
 760   # Setup the archiver (AR)
 761   #
 762   if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
 763     # The corresponding ar tool is lib.exe (used to create static libraries)
 764     AC_CHECK_PROG([AR], [lib$EXE_SUFFIX],[lib$EXE_SUFFIX],,,)
 765   elif test "x$TOOLCHAIN_TYPE" = xgcc; then
 766     BASIC_CHECK_TOOLS(AR, ar gcc-ar)
 767   else
 768     BASIC_CHECK_TOOLS(AR, ar)
 769   fi
 770   BASIC_FIXUP_EXECUTABLE(AR)
 771 ])
 772 
 773 # Setup additional tools that is considered a part of the toolchain, but not the
 774 # core part. Many of these are highly platform-specific and do not exist,
 775 # and/or are not needed on all platforms.
 776 AC_DEFUN_ONCE([TOOLCHAIN_DETECT_TOOLCHAIN_EXTRA],
 777 [
 778   if test "x$OPENJDK_TARGET_OS" = "xmacosx"; then
 779     BASIC_PATH_PROGS(LIPO, lipo)
 780     BASIC_FIXUP_EXECUTABLE(LIPO)
 781     BASIC_REQUIRE_PROGS(OTOOL, otool)
 782     BASIC_FIXUP_EXECUTABLE(OTOOL)
 783     BASIC_REQUIRE_PROGS(INSTALL_NAME_TOOL, install_name_tool)
 784     BASIC_FIXUP_EXECUTABLE(INSTALL_NAME_TOOL)
 785   fi
 786 
 787   if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
 788     AC_CHECK_PROG([MT], [mt$EXE_SUFFIX], [mt$EXE_SUFFIX],,, [/usr/bin/mt])
 789     BASIC_FIXUP_EXECUTABLE(MT)
 790     # Setup the resource compiler (RC)
 791     AC_CHECK_PROG([RC], [rc$EXE_SUFFIX], [rc$EXE_SUFFIX],,, [/usr/bin/rc])
 792     BASIC_FIXUP_EXECUTABLE(RC)
 793     AC_CHECK_PROG([DUMPBIN], [dumpbin$EXE_SUFFIX], [dumpbin$EXE_SUFFIX],,,)
 794     BASIC_FIXUP_EXECUTABLE(DUMPBIN)
 795     # We need to check for 'msbuild.exe' because at the place where we expect to
 796     # find 'msbuild.exe' there's also a directory called 'msbuild' and configure
 797     # won't find the 'msbuild.exe' executable in that case (and the
 798     # 'ac_executable_extensions' is unusable due to performance reasons).
 799     # Notice that we intentionally don't fix up the path to MSBUILD because we
 800     # will call it in a DOS shell during freetype detection on Windows (see
 801     # 'LIB_SETUP_FREETYPE' in "libraries.m4"
 802     AC_CHECK_PROG([MSBUILD], [msbuild$EXE_SUFFIX], [msbuild$EXE_SUFFIX],,,)
 803   fi
 804 
 805   if test "x$OPENJDK_TARGET_OS" = xsolaris; then
 806     BASIC_PATH_PROGS(STRIP, strip)
 807     BASIC_FIXUP_EXECUTABLE(STRIP)
 808     BASIC_PATH_PROGS(NM, nm)
 809     BASIC_FIXUP_EXECUTABLE(NM)
 810     BASIC_PATH_PROGS(GNM, gnm)
 811     BASIC_FIXUP_EXECUTABLE(GNM)
 812   elif test "x$OPENJDK_TARGET_OS" != xwindows; then
 813     # FIXME: we should unify this with the solaris case above.
 814     BASIC_CHECK_TOOLS(STRIP, strip)
 815     BASIC_FIXUP_EXECUTABLE(STRIP)
 816     if test "x$TOOLCHAIN_TYPE" = xgcc; then
 817       BASIC_CHECK_TOOLS(NM, nm gcc-nm)
 818     else
 819       BASIC_CHECK_TOOLS(NM, nm)
 820     fi
 821     BASIC_FIXUP_EXECUTABLE(NM)
 822     GNM="$NM"
 823     AC_SUBST(GNM)
 824   fi
 825 
 826   # objcopy is used for moving debug symbols to separate files when
 827   # full debug symbols are enabled.
 828   if test "x$OPENJDK_TARGET_OS" = xsolaris || test "x$OPENJDK_TARGET_OS" = xlinux; then
 829     BASIC_CHECK_TOOLS(OBJCOPY, [gobjcopy objcopy])
 830     # Only call fixup if objcopy was found.
 831     if test -n "$OBJCOPY"; then
 832       BASIC_FIXUP_EXECUTABLE(OBJCOPY)
 833       if test "x$OPENJDK_BUILD_OS" = xsolaris; then
 834         # objcopy prior to 2.21.1 on solaris is broken and is not usable.
 835         # Rewrite objcopy version output to VALID_VERSION or BAD_VERSION.
 836         # - version number is last blank separate word on first line
 837         # - version number formats that have been seen:
 838         #   - <major>.<minor>
 839         #   - <major>.<minor>.<micro>
 840         OBJCOPY_VERSION=`$OBJCOPY --version | $HEAD -n 1`
 841         # The outer [ ] is to prevent m4 from eating the [] in the sed expression.
 842         [ OBJCOPY_VERSION_CHECK=`$ECHO $OBJCOPY_VERSION | $SED -n \
 843               -e 's/.* //' \
 844               -e '/^[01]\./b bad' \
 845               -e '/^2\./{' \
 846               -e '  s/^2\.//' \
 847               -e '  /^[0-9]$/b bad' \
 848               -e '  /^[0-9]\./b bad' \
 849               -e '  /^1[0-9]$/b bad' \
 850               -e '  /^1[0-9]\./b bad' \
 851               -e '  /^20\./b bad' \
 852               -e '  /^21\.0$/b bad' \
 853               -e '  /^21\.0\./b bad' \
 854               -e '}' \
 855               -e ':good' \
 856               -e 's/.*/VALID_VERSION/p' \
 857               -e 'q' \
 858               -e ':bad' \
 859               -e 's/.*/BAD_VERSION/p' \
 860               -e 'q'` ]
 861         if test "x$OBJCOPY_VERSION_CHECK" = xBAD_VERSION; then
 862           OBJCOPY=
 863           AC_MSG_WARN([Ignoring found objcopy since it is broken (prior to 2.21.1). No debug symbols will be generated.])
 864           AC_MSG_NOTICE([objcopy reports version $OBJCOPY_VERSION])
 865           AC_MSG_NOTICE([Note: patch 149063-01 or newer contains the correct Solaris 10 SPARC version])
 866           AC_MSG_NOTICE([Note: patch 149064-01 or newer contains the correct Solaris 10 X86 version])
 867           AC_MSG_NOTICE([Note: Solaris 11 Update 1 contains the correct version])
 868         fi
 869       fi
 870     fi
 871   fi
 872 
 873   BASIC_CHECK_TOOLS(OBJDUMP, [gobjdump objdump])
 874   if test "x$OBJDUMP" != x; then
 875     # Only used for compare.sh; we can live without it. BASIC_FIXUP_EXECUTABLE
 876     # bails if argument is missing.
 877     BASIC_FIXUP_EXECUTABLE(OBJDUMP)
 878   fi
 879 
 880   case $TOOLCHAIN_TYPE in
 881     gcc|clang|solstudio)
 882       BASIC_CHECK_TOOLS(CXXFILT, [c++filt])
 883       BASIC_CHECK_NONEMPTY(CXXFILT)
 884       BASIC_FIXUP_EXECUTABLE(CXXFILT)
 885       ;;
 886   esac
 887 ])
 888 
 889 # Setup the build tools (i.e, the compiler and linker used to build programs
 890 # that should be run on the build platform, not the target platform, as a build
 891 # helper). Since the non-cross-compile case uses the normal, target compilers
 892 # for this, we can only do this after these have been setup.
 893 AC_DEFUN_ONCE([TOOLCHAIN_SETUP_BUILD_COMPILERS],
 894 [
 895   if test "x$COMPILE_TYPE" = "xcross"; then
 896     # Now we need to find a C/C++ compiler that can build executables for the
 897     # build platform. We can't use the AC_PROG_CC macro, since it can only be
 898     # used once. Also, we need to do this without adding a tools dir to the
 899     # path, otherwise we might pick up cross-compilers which don't use standard
 900     # naming.
 901 
 902     OLDPATH="$PATH"
 903 
 904     AC_ARG_WITH(build-devkit, [AS_HELP_STRING([--with-build-devkit],
 905         [Devkit to use for the build platform toolchain])])
 906     if test "x$with_build_devkit" = "xyes"; then
 907       AC_MSG_ERROR([--with-build-devkit must have a value])
 908     elif test -n "$with_build_devkit"; then
 909       if test ! -d "$with_build_devkit"; then
 910         AC_MSG_ERROR([--with-build-devkit points to non existing dir: $with_build_devkit])
 911       else
 912         BASIC_FIXUP_PATH([with_build_devkit])
 913         BUILD_DEVKIT_ROOT="$with_build_devkit"
 914         # Check for a meta data info file in the root of the devkit
 915         if test -f "$BUILD_DEVKIT_ROOT/devkit.info"; then
 916           # Process devkit.info so that existing devkit variables are not
 917           # modified by this
 918           $SED -e "s/^DEVKIT_/BUILD_DEVKIT_/g" \
 919               -e "s/\$DEVKIT_ROOT/\$BUILD_DEVKIT_ROOT/g" \
 920               -e "s/\$host/\$build/g" \
 921               $BUILD_DEVKIT_ROOT/devkit.info \
 922               > $CONFIGURESUPPORT_OUTPUTDIR/build-devkit.info
 923           . $CONFIGURESUPPORT_OUTPUTDIR/build-devkit.info
 924           # This potentially sets the following:
 925           # A descriptive name of the devkit
 926           BASIC_EVAL_DEVKIT_VARIABLE([BUILD_DEVKIT_NAME])
 927           # Corresponds to --with-extra-path
 928           BASIC_EVAL_DEVKIT_VARIABLE([BUILD_DEVKIT_EXTRA_PATH])
 929           # Corresponds to --with-toolchain-path
 930           BASIC_EVAL_DEVKIT_VARIABLE([BUILD_DEVKIT_TOOLCHAIN_PATH])
 931           # Corresponds to --with-sysroot
 932           BASIC_EVAL_DEVKIT_VARIABLE([BUILD_DEVKIT_SYSROOT])
 933           # Skip the Window specific parts
 934         fi
 935 
 936         AC_MSG_CHECKING([for build platform devkit])
 937         if test "x$BUILD_DEVKIT_NAME" != x; then
 938           AC_MSG_RESULT([$BUILD_DEVKIT_NAME in $BUILD_DEVKIT_ROOT])
 939         else
 940           AC_MSG_RESULT([$BUILD_DEVKIT_ROOT])
 941         fi
 942 
 943         BUILD_SYSROOT="$BUILD_DEVKIT_SYSROOT"
 944 
 945          # Fallback default of just /bin if DEVKIT_PATH is not defined
 946         if test "x$BUILD_DEVKIT_TOOLCHAIN_PATH" = x; then
 947           BUILD_DEVKIT_TOOLCHAIN_PATH="$BUILD_DEVKIT_ROOT/bin"
 948         fi
 949         PATH="$BUILD_DEVKIT_TOOLCHAIN_PATH:$BUILD_DEVKIT_EXTRA_PATH"
 950       fi
 951     fi
 952 
 953     # FIXME: we should list the discovered compilers as an exclude pattern!
 954     # If we do that, we can do this detection before POST_DETECTION, and still
 955     # find the build compilers in the tools dir, if needed.
 956     BASIC_REQUIRE_PROGS(BUILD_CC, [cl cc gcc])
 957     BASIC_FIXUP_EXECUTABLE(BUILD_CC)
 958     BASIC_REQUIRE_PROGS(BUILD_CXX, [cl CC g++])
 959     BASIC_FIXUP_EXECUTABLE(BUILD_CXX)
 960     BASIC_PATH_PROGS(BUILD_NM, nm gcc-nm)
 961     BASIC_FIXUP_EXECUTABLE(BUILD_NM)
 962     BASIC_PATH_PROGS(BUILD_AR, ar gcc-ar)
 963     BASIC_FIXUP_EXECUTABLE(BUILD_AR)
 964     BASIC_PATH_PROGS(BUILD_OBJCOPY, objcopy)
 965     BASIC_FIXUP_EXECUTABLE(BUILD_OBJCOPY)
 966     BASIC_PATH_PROGS(BUILD_STRIP, strip)
 967     BASIC_FIXUP_EXECUTABLE(BUILD_STRIP)
 968     # Assume the C compiler is the assembler
 969     BUILD_AS="$BUILD_CC -c"
 970     # Just like for the target compiler, use the compiler as linker
 971     BUILD_LD="$BUILD_CC"
 972     BUILD_LDCXX="$BUILD_CXX"
 973 
 974     PATH="$OLDPATH"
 975 
 976     TOOLCHAIN_EXTRACT_COMPILER_VERSION(BUILD_CC, [BuildC])
 977     TOOLCHAIN_EXTRACT_COMPILER_VERSION(BUILD_CXX, [BuildC++])
 978     TOOLCHAIN_PREPARE_FOR_VERSION_COMPARISONS([BUILD_], [OPENJDK_BUILD_])
 979     TOOLCHAIN_EXTRACT_LD_VERSION(BUILD_LD, [build linker])
 980     TOOLCHAIN_PREPARE_FOR_LD_VERSION_COMPARISONS([BUILD_], [OPENJDK_BUILD_])
 981   else
 982     # If we are not cross compiling, use the normal target compilers for
 983     # building the build platform executables.
 984     BUILD_CC="$CC"
 985     BUILD_CXX="$CXX"
 986     BUILD_LD="$LD"
 987     BUILD_LDCXX="$LDCXX"
 988     BUILD_NM="$NM"
 989     BUILD_AS="$AS"
 990     BUILD_OBJCOPY="$OBJCOPY"
 991     BUILD_STRIP="$STRIP"
 992     BUILD_AR="$AR"
 993 
 994     TOOLCHAIN_PREPARE_FOR_VERSION_COMPARISONS([], [OPENJDK_BUILD_])
 995     TOOLCHAIN_PREPARE_FOR_LD_VERSION_COMPARISONS([BUILD_], [OPENJDK_BUILD_])
 996   fi
 997 
 998   AC_SUBST(BUILD_CC)
 999   AC_SUBST(BUILD_CXX)
1000   AC_SUBST(BUILD_LD)
1001   AC_SUBST(BUILD_LDCXX)
1002   AC_SUBST(BUILD_NM)
1003   AC_SUBST(BUILD_AS)
1004   AC_SUBST(BUILD_AR)
1005 ])
1006 
1007 # Do some additional checks on the detected tools.
1008 AC_DEFUN_ONCE([TOOLCHAIN_MISC_CHECKS],
1009 [
1010   # Check for extra potential brokenness.
1011   if test  "x$TOOLCHAIN_TYPE" = xmicrosoft; then
1012     # On Windows, double-check that we got the right compiler.
1013     CC_VERSION_OUTPUT=`$CC 2>&1 | $GREP -v 'ERROR.*UtilTranslatePathList' | $HEAD -n 1 | $TR -d '\r'`
1014     COMPILER_CPU_TEST=`$ECHO $CC_VERSION_OUTPUT | $SED -n "s/^.* \(.*\)$/\1/p"`
1015     if test "x$OPENJDK_TARGET_CPU" = "xx86"; then
1016       if test "x$COMPILER_CPU_TEST" != "x80x86" -a "x$COMPILER_CPU_TEST" != "xx86"; then
1017         AC_MSG_ERROR([Target CPU mismatch. We are building for $OPENJDK_TARGET_CPU but CL is for "$COMPILER_CPU_TEST"; expected "80x86" or "x86".])
1018       fi
1019     elif test "x$OPENJDK_TARGET_CPU" = "xx86_64"; then
1020       if test "x$COMPILER_CPU_TEST" != "xx64"; then
1021         AC_MSG_ERROR([Target CPU mismatch. We are building for $OPENJDK_TARGET_CPU but CL is for "$COMPILER_CPU_TEST"; expected "x64".])
1022       fi
1023     fi
1024   fi
1025 
1026   if test "x$TOOLCHAIN_TYPE" = xgcc; then
1027     # If this is a --hash-style=gnu system, use --hash-style=both, why?
1028     HAS_GNU_HASH=`$CC -dumpspecs 2>/dev/null | $GREP 'hash-style=gnu'`
1029     # This is later checked when setting flags.
1030   fi
1031 
1032   if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then
1033     # Check if linker has -z noexecstack.
1034     HAS_NOEXECSTACK=`$CC -Wl,--help 2>/dev/null | $GREP 'z noexecstack'`
1035     # This is later checked when setting flags.
1036   fi
1037 
1038   # Setup hotspot lecagy names for toolchains
1039   HOTSPOT_TOOLCHAIN_TYPE=$TOOLCHAIN_TYPE
1040   if test "x$TOOLCHAIN_TYPE" = xclang; then
1041     HOTSPOT_TOOLCHAIN_TYPE=gcc
1042   elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
1043     HOTSPOT_TOOLCHAIN_TYPE=visCPP
1044   fi
1045   AC_SUBST(HOTSPOT_TOOLCHAIN_TYPE)
1046 ])
1047 
1048 # Setup the JTReg Regression Test Harness.
1049 AC_DEFUN_ONCE([TOOLCHAIN_SETUP_JTREG],
1050 [
1051   AC_ARG_WITH(jtreg, [AS_HELP_STRING([--with-jtreg],
1052       [Regression Test Harness @<:@probed@:>@])])
1053 
1054   if test "x$with_jtreg" = xno; then
1055     # jtreg disabled
1056     AC_MSG_CHECKING([for jtreg test harness])
1057     AC_MSG_RESULT([no, disabled])
1058   elif test "x$with_jtreg" != xyes && test "x$with_jtreg" != x; then
1059     # An explicit path is specified, use it.
1060     JT_HOME="$with_jtreg"
1061     BASIC_FIXUP_PATH([JT_HOME])
1062     if test ! -d "$JT_HOME"; then
1063       AC_MSG_ERROR([jtreg home directory from --with-jtreg=$with_jtreg does not exist])
1064     fi
1065 
1066     if test ! -e "$JT_HOME/lib/jtreg.jar"; then
1067       AC_MSG_ERROR([jtreg home directory from --with-jtreg=$with_jtreg is not a valid jtreg home])
1068     fi
1069 
1070     JTREGEXE="$JT_HOME/bin/jtreg"
1071     if test ! -x "$JTREGEXE"; then
1072       AC_MSG_ERROR([jtreg home directory from --with-jtreg=$with_jtreg does not contain valid jtreg executable])
1073     fi
1074 
1075     AC_MSG_CHECKING([for jtreg test harness])
1076     AC_MSG_RESULT([$JT_HOME])
1077   else
1078     # Try to locate jtreg
1079     if test "x$JT_HOME" != x; then
1080       # JT_HOME set in environment, use it
1081       if test ! -d "$JT_HOME"; then
1082         AC_MSG_WARN([Ignoring JT_HOME pointing to invalid directory: $JT_HOME])
1083         JT_HOME=
1084       else
1085         if test ! -e "$JT_HOME/lib/jtreg.jar"; then
1086           AC_MSG_WARN([Ignoring JT_HOME which is not a valid jtreg home: $JT_HOME])
1087           JT_HOME=
1088         elif test ! -x "$JT_HOME/bin/jtreg"; then
1089           AC_MSG_WARN([Ignoring JT_HOME which does not contain valid jtreg executable: $JT_HOME])
1090           JT_HOME=
1091         else
1092           JTREGEXE="$JT_HOME/bin/jtreg"
1093           AC_MSG_NOTICE([Located jtreg using JT_HOME from environment])
1094         fi
1095       fi
1096     fi
1097 
1098     if test "x$JT_HOME" = x; then
1099       # JT_HOME is not set in environment, or was deemed invalid.
1100       # Try to find jtreg on path
1101       BASIC_PATH_PROGS(JTREGEXE, jtreg)
1102       if test "x$JTREGEXE" != x; then
1103         # That's good, now try to derive JT_HOME
1104         JT_HOME=`(cd $($DIRNAME $JTREGEXE)/.. && pwd)`
1105         if test ! -e "$JT_HOME/lib/jtreg.jar"; then
1106           AC_MSG_WARN([Ignoring jtreg from path since a valid jtreg home cannot be found])
1107           JT_HOME=
1108           JTREGEXE=
1109         else
1110           AC_MSG_NOTICE([Located jtreg using jtreg executable in path])
1111         fi
1112       fi
1113     fi
1114 
1115     AC_MSG_CHECKING([for jtreg test harness])
1116     if test "x$JT_HOME" != x; then
1117       AC_MSG_RESULT([$JT_HOME])
1118     else
1119       AC_MSG_RESULT([no, not found])
1120 
1121       if test "x$with_jtreg" = xyes; then
1122         AC_MSG_ERROR([--with-jtreg was specified, but no jtreg found.])
1123       fi
1124     fi
1125   fi
1126 
1127   BASIC_FIXUP_EXECUTABLE(JTREGEXE)
1128   BASIC_FIXUP_PATH(JT_HOME)
1129   AC_SUBST(JT_HOME)
1130   AC_SUBST(JTREGEXE)
1131 ])
1132 
1133 # Setup the JIB dependency resolver
1134 AC_DEFUN_ONCE([TOOLCHAIN_SETUP_JIB],
1135 [
1136   AC_ARG_WITH(jib, [AS_HELP_STRING([--with-jib],
1137       [Jib dependency management tool @<:@not used@:>@])])
1138 
1139   if test "x$with_jib" = xno || test "x$with_jib" = x; then
1140     # jib disabled
1141     AC_MSG_CHECKING([for jib])
1142     AC_MSG_RESULT(no)
1143   elif test "x$with_jib" = xyes; then
1144     AC_MSG_ERROR([Must supply a value to --with-jib])
1145   else
1146     JIB_HOME="${with_jib}"
1147     AC_MSG_CHECKING([for jib])
1148     AC_MSG_RESULT(${JIB_HOME})
1149     if test ! -d "${JIB_HOME}"; then
1150       AC_MSG_ERROR([--with-jib must be a directory])
1151     fi
1152     JIB_JAR=$(ls ${JIB_HOME}/lib/jib-*.jar)
1153     if test ! -f "${JIB_JAR}"; then
1154       AC_MSG_ERROR([Could not find jib jar file in ${JIB_HOME}])
1155     fi
1156   fi
1157 
1158   AC_SUBST(JIB_HOME)
1159 ])