toolchain.m4 revision 2189:f51004322fbe
1#
2# Copyright (c) 2011, 2016, 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)
37VALID_TOOLCHAINS_all="gcc clang solstudio xlc microsoft"
38
39# These toolchains are valid on different platforms
40VALID_TOOLCHAINS_linux="gcc clang"
41VALID_TOOLCHAINS_solaris="solstudio"
42VALID_TOOLCHAINS_macosx="gcc clang"
43VALID_TOOLCHAINS_aix="xlc"
44VALID_TOOLCHAINS_windows="microsoft"
45
46# Toolchain descriptions
47TOOLCHAIN_DESCRIPTION_clang="clang/LLVM"
48TOOLCHAIN_DESCRIPTION_gcc="GNU Compiler Collection"
49TOOLCHAIN_DESCRIPTION_microsoft="Microsoft Visual Studio"
50TOOLCHAIN_DESCRIPTION_solstudio="Oracle Solaris Studio"
51TOOLCHAIN_DESCRIPTION_xlc="IBM XL C/C++"
52
53# Minimum supported versions, empty means unspecified
54TOOLCHAIN_MINIMUM_VERSION_clang="3.2"
55TOOLCHAIN_MINIMUM_VERSION_gcc="4.3"
56TOOLCHAIN_MINIMUM_VERSION_microsoft=""
57TOOLCHAIN_MINIMUM_VERSION_solstudio="5.12"
58TOOLCHAIN_MINIMUM_VERSION_xlc=""
59
60# Prepare the system so that TOOLCHAIN_CHECK_COMPILER_VERSION can be called.
61# Must have CC_VERSION_NUMBER and CXX_VERSION_NUMBER.
62# $1 - optional variable prefix for compiler and version variables (BUILD_)
63# $2 - optional variable prefix for comparable variable (OPENJDK_BUILD_)
64AC_DEFUN([TOOLCHAIN_PREPARE_FOR_VERSION_COMPARISONS],
65[
66  if test "x[$]$1CC_VERSION_NUMBER" != "x[$]$1CXX_VERSION_NUMBER"; then
67    AC_MSG_WARN([C and C++ compiler have different version numbers, [$]$1CC_VERSION_NUMBER vs [$]$1CXX_VERSION_NUMBER.])
68    AC_MSG_WARN([This typically indicates a broken setup, and is not supported])
69  fi
70
71  # We only check CC_VERSION_NUMBER since we assume CXX_VERSION_NUMBER is equal.
72  if [ [[ "[$]$1CC_VERSION_NUMBER" =~ (.*\.){3} ]] ]; then
73    AC_MSG_WARN([C compiler version number has more than three parts (X.Y.Z): [$]$1CC_VERSION_NUMBER. Comparisons might be wrong.])
74  fi
75
76  if [ [[  "[$]$1CC_VERSION_NUMBER" =~ [0-9]{6} ]] ]; then
77    AC_MSG_WARN([C compiler version number has a part larger than 99999: [$]$1CC_VERSION_NUMBER. Comparisons might be wrong.])
78  fi
79
80  $2COMPARABLE_ACTUAL_VERSION=`$AWK -F. '{ printf("%05d%05d%05d\n", [$]1, [$]2, [$]3) }' <<< "[$]$1CC_VERSION_NUMBER"`
81])
82
83# Check if the configured compiler (C and C++) is of a specific version or
84# newer. TOOLCHAIN_PREPARE_FOR_VERSION_COMPARISONS must have been called before.
85#
86# Arguments:
87#   VERSION:   The version string to check against the found version
88#   IF_AT_LEAST:   block to run if the compiler is at least this version (>=)
89#   IF_OLDER_THAN:   block to run if the compiler is older than this version (<)
90#   PREFIX:   Optional variable prefix for compiler to compare version for (OPENJDK_BUILD_)
91BASIC_DEFUN_NAMED([TOOLCHAIN_CHECK_COMPILER_VERSION],
92    [*VERSION PREFIX IF_AT_LEAST IF_OLDER_THAN], [$@],
93[
94  # Need to assign to a variable since m4 is blocked from modifying parts in [].
95  REFERENCE_VERSION=ARG_VERSION
96
97  if [ [[ "$REFERENCE_VERSION" =~ (.*\.){3} ]] ]; then
98    AC_MSG_ERROR([Internal error: Cannot compare to ARG_VERSION, only three parts (X.Y.Z) is supported])
99  fi
100
101  if [ [[ "$REFERENCE_VERSION" =~ [0-9]{6} ]] ]; then
102    AC_MSG_ERROR([Internal error: Cannot compare to ARG_VERSION, only parts < 99999 is supported])
103  fi
104
105  # Version comparison method inspired by http://stackoverflow.com/a/24067243
106  COMPARABLE_REFERENCE_VERSION=`$AWK -F. '{ printf("%05d%05d%05d\n", [$]1, [$]2, [$]3) }' <<< "$REFERENCE_VERSION"`
107
108  if test [$]ARG_PREFIX[COMPARABLE_ACTUAL_VERSION] -ge $COMPARABLE_REFERENCE_VERSION ; then
109    :
110    ARG_IF_AT_LEAST
111  else
112    :
113    ARG_IF_OLDER_THAN
114  fi
115])
116
117# Setup a number of variables describing how native output files are
118# named on this platform/toolchain.
119AC_DEFUN([TOOLCHAIN_SETUP_FILENAME_PATTERNS],
120[
121  # Define filename patterns
122  if test "x$OPENJDK_TARGET_OS" = xwindows; then
123    LIBRARY_PREFIX=
124    SHARED_LIBRARY_SUFFIX='.dll'
125    STATIC_LIBRARY_SUFFIX='.lib'
126    SHARED_LIBRARY='[$]1.dll'
127    STATIC_LIBRARY='[$]1.lib'
128    OBJ_SUFFIX='.obj'
129    EXE_SUFFIX='.exe'
130  else
131    LIBRARY_PREFIX=lib
132    SHARED_LIBRARY_SUFFIX='.so'
133    STATIC_LIBRARY_SUFFIX='.a'
134    SHARED_LIBRARY='lib[$]1.so'
135    STATIC_LIBRARY='lib[$]1.a'
136    OBJ_SUFFIX='.o'
137    EXE_SUFFIX=''
138    if test "x$OPENJDK_TARGET_OS" = xmacosx; then
139      # For full static builds, we're overloading the SHARED_LIBRARY
140      # variables in order to limit the amount of changes required.
141      # It would be better to remove SHARED and just use LIBRARY and
142      # LIBRARY_SUFFIX for libraries that can be built either
143      # shared or static and use STATIC_* for libraries that are
144      # always built statically.
145      if test "x$STATIC_BUILD" = xtrue; then
146        SHARED_LIBRARY='lib[$]1.a'
147        SHARED_LIBRARY_SUFFIX='.a'
148      else
149        SHARED_LIBRARY='lib[$]1.dylib'
150        SHARED_LIBRARY_SUFFIX='.dylib'
151      fi
152    fi
153  fi
154
155  AC_SUBST(LIBRARY_PREFIX)
156  AC_SUBST(SHARED_LIBRARY_SUFFIX)
157  AC_SUBST(STATIC_LIBRARY_SUFFIX)
158  AC_SUBST(SHARED_LIBRARY)
159  AC_SUBST(STATIC_LIBRARY)
160  AC_SUBST(OBJ_SUFFIX)
161  AC_SUBST(EXE_SUFFIX)
162])
163
164# Determine which toolchain type to use, and make sure it is valid for this
165# platform. Setup various information about the selected toolchain.
166AC_DEFUN_ONCE([TOOLCHAIN_DETERMINE_TOOLCHAIN_TYPE],
167[
168  AC_ARG_WITH(toolchain-type, [AS_HELP_STRING([--with-toolchain-type],
169      [the toolchain type (or family) to use, use '--help' to show possible values @<:@platform dependent@:>@])])
170
171  # Use indirect variable referencing
172  toolchain_var_name=VALID_TOOLCHAINS_$OPENJDK_BUILD_OS
173  VALID_TOOLCHAINS=${!toolchain_var_name}
174
175  if test "x$OPENJDK_TARGET_OS" = xmacosx; then
176    if test -n "$XCODEBUILD"; then
177      # On Mac OS X, default toolchain to clang after Xcode 5
178      XCODE_VERSION_OUTPUT=`"$XCODEBUILD" -version 2>&1 | $HEAD -n 1`
179      $ECHO "$XCODE_VERSION_OUTPUT" | $GREP "Xcode " > /dev/null
180      if test $? -ne 0; then
181        AC_MSG_ERROR([Failed to determine Xcode version.])
182      fi
183      XCODE_MAJOR_VERSION=`$ECHO $XCODE_VERSION_OUTPUT | \
184          $SED -e 's/^Xcode \(@<:@1-9@:>@@<:@0-9.@:>@*\)/\1/' | \
185          $CUT -f 1 -d .`
186      AC_MSG_NOTICE([Xcode major version: $XCODE_MAJOR_VERSION])
187      if test $XCODE_MAJOR_VERSION -ge 5; then
188          DEFAULT_TOOLCHAIN="clang"
189      else
190          DEFAULT_TOOLCHAIN="gcc"
191      fi
192    else
193      # If Xcode is not installed, but the command line tools are
194      # then we can't run xcodebuild. On these systems we should
195      # default to clang
196      DEFAULT_TOOLCHAIN="clang"
197    fi
198  else
199    # First toolchain type in the list is the default
200    DEFAULT_TOOLCHAIN=${VALID_TOOLCHAINS%% *}
201  fi
202
203  if test "x$with_toolchain_type" = xlist; then
204    # List all toolchains
205    AC_MSG_NOTICE([The following toolchains are valid on this platform:])
206    for toolchain in $VALID_TOOLCHAINS; do
207      toolchain_var_name=TOOLCHAIN_DESCRIPTION_$toolchain
208      TOOLCHAIN_DESCRIPTION=${!toolchain_var_name}
209      $PRINTF "  %-10s  %s\n" $toolchain "$TOOLCHAIN_DESCRIPTION"
210    done
211
212    exit 0
213  elif test "x$with_toolchain_type" != x; then
214    # User override; check that it is valid
215    if test "x${VALID_TOOLCHAINS/$with_toolchain_type/}" = "x${VALID_TOOLCHAINS}"; then
216      AC_MSG_NOTICE([Toolchain type $with_toolchain_type is not valid on this platform.])
217      AC_MSG_NOTICE([Valid toolchains: $VALID_TOOLCHAINS.])
218      AC_MSG_ERROR([Cannot continue.])
219    fi
220    TOOLCHAIN_TYPE=$with_toolchain_type
221  else
222    # No flag given, use default
223    TOOLCHAIN_TYPE=$DEFAULT_TOOLCHAIN
224  fi
225  AC_SUBST(TOOLCHAIN_TYPE)
226
227  TOOLCHAIN_CC_BINARY_clang="clang"
228  TOOLCHAIN_CC_BINARY_gcc="gcc"
229  TOOLCHAIN_CC_BINARY_microsoft="cl"
230  TOOLCHAIN_CC_BINARY_solstudio="cc"
231  TOOLCHAIN_CC_BINARY_xlc="xlc_r"
232
233  TOOLCHAIN_CXX_BINARY_clang="clang++"
234  TOOLCHAIN_CXX_BINARY_gcc="g++"
235  TOOLCHAIN_CXX_BINARY_microsoft="cl"
236  TOOLCHAIN_CXX_BINARY_solstudio="CC"
237  TOOLCHAIN_CXX_BINARY_xlc="xlC_r"
238
239  # Use indirect variable referencing
240  toolchain_var_name=TOOLCHAIN_DESCRIPTION_$TOOLCHAIN_TYPE
241  TOOLCHAIN_DESCRIPTION=${!toolchain_var_name}
242  toolchain_var_name=TOOLCHAIN_MINIMUM_VERSION_$TOOLCHAIN_TYPE
243  TOOLCHAIN_MINIMUM_VERSION=${!toolchain_var_name}
244  toolchain_var_name=TOOLCHAIN_CC_BINARY_$TOOLCHAIN_TYPE
245  TOOLCHAIN_CC_BINARY=${!toolchain_var_name}
246  toolchain_var_name=TOOLCHAIN_CXX_BINARY_$TOOLCHAIN_TYPE
247  TOOLCHAIN_CXX_BINARY=${!toolchain_var_name}
248
249  TOOLCHAIN_SETUP_FILENAME_PATTERNS
250
251  if test "x$TOOLCHAIN_TYPE" = "x$DEFAULT_TOOLCHAIN"; then
252    AC_MSG_NOTICE([Using default toolchain $TOOLCHAIN_TYPE ($TOOLCHAIN_DESCRIPTION)])
253  else
254    AC_MSG_NOTICE([Using user selected toolchain $TOOLCHAIN_TYPE ($TOOLCHAIN_DESCRIPTION). Default toolchain is $DEFAULT_TOOLCHAIN.])
255  fi
256])
257
258# Before we start detecting the toolchain executables, we might need some
259# special setup, e.g. additional paths etc.
260AC_DEFUN_ONCE([TOOLCHAIN_PRE_DETECTION],
261[
262  # FIXME: Is this needed?
263  AC_LANG(C++)
264
265  # Store the CFLAGS etc passed to the configure script.
266  ORG_CFLAGS="$CFLAGS"
267  ORG_CXXFLAGS="$CXXFLAGS"
268
269  # autoconf magic only relies on PATH, so update it if tools dir is specified
270  OLD_PATH="$PATH"
271
272  # On Windows, we need to detect the visual studio installation first.
273  # This will change the PATH, but we need to keep that new PATH even
274  # after toolchain detection is done, since the compiler (on x86) uses
275  # it for DLL resolution in runtime.
276  if test "x$OPENJDK_BUILD_OS" = "xwindows" \
277      && test "x$TOOLCHAIN_TYPE" = "xmicrosoft"; then
278    TOOLCHAIN_SETUP_VISUAL_STUDIO_ENV
279    # Reset path to VS_PATH. It will include everything that was on PATH at the time we
280    # ran TOOLCHAIN_SETUP_VISUAL_STUDIO_ENV.
281    PATH="$VS_PATH"
282    # The microsoft toolchain also requires INCLUDE and LIB to be set.
283    export INCLUDE="$VS_INCLUDE"
284    export LIB="$VS_LIB"
285  else
286    if test "x$XCODE_VERSION_OUTPUT" != x; then
287      # For Xcode, we set the Xcode version as TOOLCHAIN_VERSION
288      TOOLCHAIN_VERSION=`$ECHO $XCODE_VERSION_OUTPUT | $CUT -f 2 -d ' '`
289      TOOLCHAIN_DESCRIPTION="$TOOLCHAIN_DESCRIPTION from Xcode"
290    else
291      # Currently we do not define this for other toolchains. This might change as the need arise.
292      TOOLCHAIN_VERSION=
293    fi
294  fi
295  AC_SUBST(TOOLCHAIN_VERSION)
296
297  # For solaris we really need solaris tools, and not the GNU equivalent.
298  # The build tools on Solaris reside in /usr/ccs (C Compilation System),
299  # so add that to path before starting to probe.
300  # FIXME: This was originally only done for AS,NM,GNM,STRIP,OBJCOPY,OBJDUMP.
301  if test "x$OPENJDK_BUILD_OS" = xsolaris; then
302    PATH="/usr/ccs/bin:$PATH"
303  fi
304
305  # Finally add TOOLCHAIN_PATH at the beginning, to allow --with-tools-dir to
306  # override all other locations.
307  if test "x$TOOLCHAIN_PATH" != x; then
308    PATH=$TOOLCHAIN_PATH:$PATH
309  fi
310])
311
312# Restore path, etc
313AC_DEFUN_ONCE([TOOLCHAIN_POST_DETECTION],
314[
315  # Restore old path.
316  PATH="$OLD_PATH"
317
318  # Restore the flags to the user specified values.
319  # This is necessary since AC_PROG_CC defaults CFLAGS to "-g -O2"
320  CFLAGS="$ORG_CFLAGS"
321  CXXFLAGS="$ORG_CXXFLAGS"
322])
323
324# Check if a compiler is of the toolchain type we expect, and save the version
325# information from it. If the compiler does not match the expected type,
326# this function will abort using AC_MSG_ERROR. If it matches, the version will
327# be stored in CC_VERSION_NUMBER/CXX_VERSION_NUMBER (as a dotted number), and
328# the full version string in CC_VERSION_STRING/CXX_VERSION_STRING.
329#
330# $1 = compiler to test (CC or CXX)
331# $2 = human readable name of compiler (C or C++)
332AC_DEFUN([TOOLCHAIN_EXTRACT_COMPILER_VERSION],
333[
334  COMPILER=[$]$1
335  COMPILER_NAME=$2
336
337  if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
338    # cc -V output typically looks like
339    #     cc: Sun C 5.12 Linux_i386 2011/11/16
340    COMPILER_VERSION_OUTPUT=`$COMPILER -V 2>&1`
341    # Check that this is likely to be the Solaris Studio cc.
342    $ECHO "$COMPILER_VERSION_OUTPUT" | $GREP "^.*: Sun $COMPILER_NAME" > /dev/null
343    if test $? -ne 0; then
344      ALT_VERSION_OUTPUT=`$COMPILER --version 2>&1`
345      AC_MSG_NOTICE([The $COMPILER_NAME compiler (located as $COMPILER) does not seem to be the required $TOOLCHAIN_TYPE compiler.])
346      AC_MSG_NOTICE([The result from running with -V was: "$COMPILER_VERSION_OUTPUT"])
347      AC_MSG_NOTICE([The result from running with --version was: "$ALT_VERSION_OUTPUT"])
348      AC_MSG_ERROR([A $TOOLCHAIN_TYPE compiler is required. Try setting --with-tools-dir.])
349    fi
350    # Remove usage instructions (if present), and
351    # collapse compiler output into a single line
352    COMPILER_VERSION_STRING=`$ECHO $COMPILER_VERSION_OUTPUT | \
353        $SED -e 's/ *@<:@Uu@:>@sage:.*//'`
354    COMPILER_VERSION_NUMBER=`$ECHO $COMPILER_VERSION_OUTPUT | \
355        $SED -e "s/^.*@<:@ ,\t@:>@$COMPILER_NAME@<:@ ,\t@:>@\(@<:@1-9@:>@\.@<:@0-9@:>@@<:@0-9@:>@*\).*/\1/"`
356  elif test  "x$TOOLCHAIN_TYPE" = xxlc; then
357    # xlc -qversion output typically looks like
358    #     IBM XL C/C++ for AIX, V11.1 (5724-X13)
359    #     Version: 11.01.0000.0015
360    COMPILER_VERSION_OUTPUT=`$COMPILER -qversion 2>&1`
361    # Check that this is likely to be the IBM XL C compiler.
362    $ECHO "$COMPILER_VERSION_OUTPUT" | $GREP "IBM XL C" > /dev/null
363    if test $? -ne 0; then
364      ALT_VERSION_OUTPUT=`$COMPILER --version 2>&1`
365      AC_MSG_NOTICE([The $COMPILER_NAME compiler (located as $COMPILER) does not seem to be the required $TOOLCHAIN_TYPE compiler.])
366      AC_MSG_NOTICE([The result from running with -qversion was: "$COMPILER_VERSION_OUTPUT"])
367      AC_MSG_NOTICE([The result from running with --version was: "$ALT_VERSION_OUTPUT"])
368      AC_MSG_ERROR([A $TOOLCHAIN_TYPE compiler is required. Try setting --with-tools-dir.])
369    fi
370    # Collapse compiler output into a single line
371    COMPILER_VERSION_STRING=`$ECHO $COMPILER_VERSION_OUTPUT`
372    COMPILER_VERSION_NUMBER=`$ECHO $COMPILER_VERSION_OUTPUT | \
373        $SED -e 's/^.*, V\(@<:@1-9@:>@@<:@0-9.@:>@*\).*$/\1/'`
374  elif test  "x$TOOLCHAIN_TYPE" = xmicrosoft; then
375    # There is no specific version flag, but all output starts with a version string.
376    # First line typically looks something like:
377    # Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 16.00.40219.01 for 80x86
378    COMPILER_VERSION_OUTPUT=`$COMPILER 2>&1 | $HEAD -n 1 | $TR -d '\r'`
379    # Check that this is likely to be Microsoft CL.EXE.
380    $ECHO "$COMPILER_VERSION_OUTPUT" | $GREP "Microsoft.*Compiler" > /dev/null
381    if test $? -ne 0; then
382      AC_MSG_NOTICE([The $COMPILER_NAME compiler (located as $COMPILER) does not seem to be the required $TOOLCHAIN_TYPE compiler.])
383      AC_MSG_NOTICE([The result from running it was: "$COMPILER_VERSION_OUTPUT"])
384      AC_MSG_ERROR([A $TOOLCHAIN_TYPE compiler is required. Try setting --with-tools-dir.])
385    fi
386    # Collapse compiler output into a single line
387    COMPILER_VERSION_STRING=`$ECHO $COMPILER_VERSION_OUTPUT`
388    COMPILER_VERSION_NUMBER=`$ECHO $COMPILER_VERSION_OUTPUT | \
389        $SED -e 's/^.*ersion.\(@<:@1-9@:>@@<:@0-9.@:>@*\) .*$/\1/'`
390  elif test  "x$TOOLCHAIN_TYPE" = xgcc; then
391    # gcc --version output typically looks like
392    #     gcc (Ubuntu/Linaro 4.8.1-10ubuntu9) 4.8.1
393    #     Copyright (C) 2013 Free Software Foundation, Inc.
394    #     This is free software; see the source for copying conditions.  There is NO
395    #     warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
396    COMPILER_VERSION_OUTPUT=`$COMPILER --version 2>&1`
397    # Check that this is likely to be GCC.
398    $ECHO "$COMPILER_VERSION_OUTPUT" | $GREP "Free Software Foundation" > /dev/null
399    if test $? -ne 0; then
400      AC_MSG_NOTICE([The $COMPILER_NAME compiler (located as $COMPILER) does not seem to be the required $TOOLCHAIN_TYPE compiler.])
401      AC_MSG_NOTICE([The result from running with --version was: "$COMPILER_VERSION"])
402      AC_MSG_ERROR([A $TOOLCHAIN_TYPE compiler is required. Try setting --with-tools-dir.])
403    fi
404    # Remove Copyright and legalese from version string, and
405    # collapse into a single line
406    COMPILER_VERSION_STRING=`$ECHO $COMPILER_VERSION_OUTPUT | \
407        $SED -e 's/ *Copyright .*//'`
408    COMPILER_VERSION_NUMBER=`$ECHO $COMPILER_VERSION_OUTPUT | \
409        $SED -e 's/^.* \(@<:@1-9@:>@\.@<:@0-9.@:>@*\)@<:@^0-9.@:>@.*$/\1/'`
410  elif test  "x$TOOLCHAIN_TYPE" = xclang; then
411    # clang --version output typically looks like
412    #    Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
413    #    clang version 3.3 (tags/RELEASE_33/final)
414    # or
415    #    Debian clang version 3.2-7ubuntu1 (tags/RELEASE_32/final) (based on LLVM 3.2)
416    #    Target: x86_64-pc-linux-gnu
417    #    Thread model: posix
418    COMPILER_VERSION_OUTPUT=`$COMPILER --version 2>&1`
419    # Check that this is likely to be clang
420    $ECHO "$COMPILER_VERSION_OUTPUT" | $GREP "clang" > /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 $TOOLCHAIN_TYPE compiler.])
423      AC_MSG_NOTICE([The result from running with --version was: "$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/^.* version \(@<:@1-9@:>@@<:@0-9.@:>@*\).*$/\1/'`
430  else
431      AC_MSG_ERROR([Unknown toolchain type $TOOLCHAIN_TYPE.])
432  fi
433  # This sets CC_VERSION_NUMBER or CXX_VERSION_NUMBER. (This comment is a grep marker)
434  $1_VERSION_NUMBER="$COMPILER_VERSION_NUMBER"
435  # This sets CC_VERSION_STRING or CXX_VERSION_STRING. (This comment is a grep marker)
436  $1_VERSION_STRING="$COMPILER_VERSION_STRING"
437
438  AC_MSG_NOTICE([Using $TOOLCHAIN_TYPE $COMPILER_NAME compiler version $COMPILER_VERSION_NUMBER @<:@$COMPILER_VERSION_STRING@:>@])
439])
440
441# Try to locate the given C or C++ compiler in the path, or otherwise.
442#
443# $1 = compiler to test (CC or CXX)
444# $2 = human readable name of compiler (C or C++)
445# $3 = list of compiler names to search for
446AC_DEFUN([TOOLCHAIN_FIND_COMPILER],
447[
448  COMPILER_NAME=$2
449  SEARCH_LIST="$3"
450
451  if test "x[$]$1" != x; then
452    # User has supplied compiler name already, always let that override.
453    AC_MSG_NOTICE([Will use user supplied compiler $1=[$]$1])
454    if test "x`basename [$]$1`" = "x[$]$1"; then
455      # A command without a complete path is provided, search $PATH.
456
457      AC_PATH_PROGS(POTENTIAL_$1, [$]$1)
458      if test "x$POTENTIAL_$1" != x; then
459        $1=$POTENTIAL_$1
460      else
461        AC_MSG_ERROR([User supplied compiler $1=[$]$1 could not be found])
462      fi
463    else
464      # Otherwise it might already be a complete path
465      if test ! -x "[$]$1"; then
466        AC_MSG_ERROR([User supplied compiler $1=[$]$1 does not exist])
467      fi
468    fi
469  else
470    # No user supplied value. Locate compiler ourselves.
471
472    # If we are cross compiling, assume cross compilation tools follows the
473    # cross compilation standard where they are prefixed with the autoconf
474    # standard name for the target. For example the binary
475    # i686-sun-solaris2.10-gcc will cross compile for i686-sun-solaris2.10.
476    # If we are not cross compiling, then the default compiler name will be
477    # used.
478
479    $1=
480    # If TOOLCHAIN_PATH is set, check for all compiler names in there first
481    # before checking the rest of the PATH.
482    # FIXME: Now that we prefix the TOOLS_DIR to the PATH in the PRE_DETECTION
483    # step, this should not be necessary.
484    if test -n "$TOOLCHAIN_PATH"; then
485      PATH_save="$PATH"
486      PATH="$TOOLCHAIN_PATH"
487      AC_PATH_PROGS(TOOLCHAIN_PATH_$1, $SEARCH_LIST)
488      $1=$TOOLCHAIN_PATH_$1
489      PATH="$PATH_save"
490    fi
491
492    # AC_PATH_PROGS can't be run multiple times with the same variable,
493    # so create a new name for this run.
494    if test "x[$]$1" = x; then
495      AC_PATH_PROGS(POTENTIAL_$1, $SEARCH_LIST)
496      $1=$POTENTIAL_$1
497    fi
498
499    if test "x[$]$1" = x; then
500      HELP_MSG_MISSING_DEPENDENCY([devkit])
501      AC_MSG_ERROR([Could not find a $COMPILER_NAME compiler. $HELP_MSG])
502    fi
503  fi
504
505  # Now we have a compiler binary in $1. Make sure it's okay.
506  BASIC_FIXUP_EXECUTABLE($1)
507  TEST_COMPILER="[$]$1"
508
509  AC_MSG_CHECKING([resolved symbolic links for $1])
510  SYMLINK_ORIGINAL="$TEST_COMPILER"
511  BASIC_REMOVE_SYMBOLIC_LINKS(SYMLINK_ORIGINAL)
512  if test "x$TEST_COMPILER" = "x$SYMLINK_ORIGINAL"; then
513    AC_MSG_RESULT([no symlink])
514  else
515    AC_MSG_RESULT([$SYMLINK_ORIGINAL])
516
517    # We can't handle ccache by gcc wrappers, since we need to know if we're
518    # using ccache. Instead ccache usage must be controlled by a configure option.
519    COMPILER_BASENAME=`$BASENAME "$SYMLINK_ORIGINAL"`
520    if test "x$COMPILER_BASENAME" = "xccache"; then
521      AC_MSG_NOTICE([Please use --enable-ccache instead of providing a wrapped compiler.])
522      AC_MSG_ERROR([$TEST_COMPILER is a symbolic link to ccache. This is not supported.])
523    fi
524  fi
525
526  TOOLCHAIN_EXTRACT_COMPILER_VERSION([$1], [$COMPILER_NAME])
527])
528
529# Detect the core components of the toolchain, i.e. the compilers (CC and CXX),
530# preprocessor (CPP and CXXCPP), the linker (LD), the assembler (AS) and the
531# archiver (AR). Verify that the compilers are correct according to the
532# toolchain type.
533AC_DEFUN_ONCE([TOOLCHAIN_DETECT_TOOLCHAIN_CORE],
534[
535  #
536  # Setup the compilers (CC and CXX)
537  #
538  TOOLCHAIN_FIND_COMPILER([CC], [C], $TOOLCHAIN_CC_BINARY)
539  # Now that we have resolved CC ourself, let autoconf have its go at it
540  AC_PROG_CC([$CC])
541
542  TOOLCHAIN_FIND_COMPILER([CXX], [C++], $TOOLCHAIN_CXX_BINARY)
543  # Now that we have resolved CXX ourself, let autoconf have its go at it
544  AC_PROG_CXX([$CXX])
545
546  # This is the compiler version number on the form X.Y[.Z]
547  AC_SUBST(CC_VERSION_NUMBER)
548  AC_SUBST(CXX_VERSION_NUMBER)
549
550  TOOLCHAIN_PREPARE_FOR_VERSION_COMPARISONS
551
552  if test "x$TOOLCHAIN_MINIMUM_VERSION" != x; then
553    TOOLCHAIN_CHECK_COMPILER_VERSION(VERSION: $TOOLCHAIN_MINIMUM_VERSION,
554        IF_OLDER_THAN: [
555          AC_MSG_WARN([You are using $TOOLCHAIN_TYPE older than $TOOLCHAIN_MINIMUM_VERSION. This is not a supported configuration.])
556        ]
557    )
558  fi
559
560  #
561  # Setup the preprocessor (CPP and CXXCPP)
562  #
563  AC_PROG_CPP
564  BASIC_FIXUP_EXECUTABLE(CPP)
565  AC_PROG_CXXCPP
566  BASIC_FIXUP_EXECUTABLE(CXXCPP)
567
568  #
569  # Setup the linker (LD)
570  #
571  if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
572    # In the Microsoft toolchain we have a separate LD command "link".
573    # Make sure we reject /usr/bin/link (as determined in CYGWIN_LINK), which is
574    # a cygwin program for something completely different.
575    AC_CHECK_PROG([LD], [link],[link],,, [$CYGWIN_LINK])
576    BASIC_FIXUP_EXECUTABLE(LD)
577    # Verify that we indeed succeeded with this trick.
578    AC_MSG_CHECKING([if the found link.exe is actually the Visual Studio linker])
579    "$LD" --version > /dev/null
580    if test $? -eq 0 ; then
581      AC_MSG_RESULT([no])
582      AC_MSG_ERROR([This is the Cygwin link tool. Please check your PATH and rerun configure.])
583    else
584      AC_MSG_RESULT([yes])
585    fi
586    LDCXX="$LD"
587  else
588    # All other toolchains use the compiler to link.
589    LD="$CC"
590    LDCXX="$CXX"
591  fi
592  AC_SUBST(LD)
593  # FIXME: it should be CXXLD, according to standard (cf CXXCPP)
594  AC_SUBST(LDCXX)
595
596  #
597  # Setup the assembler (AS)
598  #
599  if test "x$OPENJDK_TARGET_OS" = xsolaris; then
600    BASIC_PATH_PROGS(AS, as)
601    BASIC_FIXUP_EXECUTABLE(AS)
602    if test "x$AS" = x; then
603      AC_MSG_ERROR([Solaris assembler (as) is required. Please install via "pkg install pkg:/developer/assembler".])
604    fi
605  else
606    # FIXME: is this correct for microsoft?
607    AS="$CC -c"
608  fi
609  AC_SUBST(AS)
610
611  #
612  # Setup the archiver (AR)
613  #
614  if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
615    # The corresponding ar tool is lib.exe (used to create static libraries)
616    AC_CHECK_PROG([AR], [lib],[lib],,,)
617  elif test "x$TOOLCHAIN_TYPE" = xgcc; then
618    BASIC_CHECK_TOOLS(AR, ar gcc-ar)
619  else
620    BASIC_CHECK_TOOLS(AR, ar)
621  fi
622  BASIC_FIXUP_EXECUTABLE(AR)
623])
624
625# Setup additional tools that is considered a part of the toolchain, but not the
626# core part. Many of these are highly platform-specific and do not exist,
627# and/or are not needed on all platforms.
628AC_DEFUN_ONCE([TOOLCHAIN_DETECT_TOOLCHAIN_EXTRA],
629[
630  if test "x$OPENJDK_TARGET_OS" = "xmacosx"; then
631    BASIC_PATH_PROGS(LIPO, lipo)
632    BASIC_FIXUP_EXECUTABLE(LIPO)
633  fi
634
635  if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
636    AC_CHECK_PROG([MT], [mt], [mt],,, [/usr/bin/mt])
637    BASIC_FIXUP_EXECUTABLE(MT)
638    # Setup the resource compiler (RC)
639    AC_CHECK_PROG([RC], [rc], [rc],,, [/usr/bin/rc])
640    BASIC_FIXUP_EXECUTABLE(RC)
641    AC_CHECK_PROG([DUMPBIN], [dumpbin], [dumpbin],,,)
642    BASIC_FIXUP_EXECUTABLE(DUMPBIN)
643    # We need to check for 'msbuild.exe' because at the place where we expect to
644    # find 'msbuild.exe' there's also a directory called 'msbuild' and configure
645    # won't find the 'msbuild.exe' executable in that case (and the
646    # 'ac_executable_extensions' is unusable due to performance reasons).
647    # Notice that we intentionally don't fix up the path to MSBUILD because we
648    # will call it in a DOS shell during freetype detection on Windows (see
649    # 'LIB_SETUP_FREETYPE' in "libraries.m4"
650    AC_CHECK_PROG([MSBUILD], [msbuild.exe], [msbuild.exe],,,)
651  fi
652
653  if test "x$OPENJDK_TARGET_OS" = xsolaris; then
654    BASIC_PATH_PROGS(STRIP, strip)
655    BASIC_FIXUP_EXECUTABLE(STRIP)
656    BASIC_PATH_PROGS(NM, nm)
657    BASIC_FIXUP_EXECUTABLE(NM)
658    BASIC_PATH_PROGS(GNM, gnm)
659    BASIC_FIXUP_EXECUTABLE(GNM)
660  elif test "x$OPENJDK_TARGET_OS" != xwindows; then
661    # FIXME: we should unify this with the solaris case above.
662    BASIC_CHECK_TOOLS(STRIP, strip)
663    BASIC_FIXUP_EXECUTABLE(STRIP)
664    if test "x$TOOLCHAIN_TYPE" = xgcc; then
665      BASIC_CHECK_TOOLS(NM, nm gcc-nm)
666    else
667      BASIC_CHECK_TOOLS(NM, nm)
668    fi
669    BASIC_FIXUP_EXECUTABLE(NM)
670    GNM="$NM"
671    AC_SUBST(GNM)
672  fi
673
674  # objcopy is used for moving debug symbols to separate files when
675  # full debug symbols are enabled.
676  if test "x$OPENJDK_TARGET_OS" = xsolaris || test "x$OPENJDK_TARGET_OS" = xlinux; then
677    BASIC_CHECK_TOOLS(OBJCOPY, [gobjcopy objcopy])
678    # Only call fixup if objcopy was found.
679    if test -n "$OBJCOPY"; then
680      BASIC_FIXUP_EXECUTABLE(OBJCOPY)
681      if test "x$OPENJDK_BUILD_OS" = xsolaris; then
682        # objcopy prior to 2.21.1 on solaris is broken and is not usable.
683        # Rewrite objcopy version output to VALID_VERSION or BAD_VERSION.
684        # - version number is last blank separate word on first line
685        # - version number formats that have been seen:
686        #   - <major>.<minor>
687        #   - <major>.<minor>.<micro>
688        OBJCOPY_VERSION=`$OBJCOPY --version | $HEAD -n 1`
689        # The outer [ ] is to prevent m4 from eating the [] in the sed expression.
690        [ OBJCOPY_VERSION_CHECK=`$ECHO $OBJCOPY_VERSION | $SED -n \
691              -e 's/.* //' \
692              -e '/^[01]\./b bad' \
693              -e '/^2\./{' \
694              -e '  s/^2\.//' \
695              -e '  /^[0-9]$/b bad' \
696              -e '  /^[0-9]\./b bad' \
697              -e '  /^1[0-9]$/b bad' \
698              -e '  /^1[0-9]\./b bad' \
699              -e '  /^20\./b bad' \
700              -e '  /^21\.0$/b bad' \
701              -e '  /^21\.0\./b bad' \
702              -e '}' \
703              -e ':good' \
704              -e 's/.*/VALID_VERSION/p' \
705              -e 'q' \
706              -e ':bad' \
707              -e 's/.*/BAD_VERSION/p' \
708              -e 'q'` ]
709        if test "x$OBJCOPY_VERSION_CHECK" = xBAD_VERSION; then
710          OBJCOPY=
711          AC_MSG_WARN([Ignoring found objcopy since it is broken (prior to 2.21.1). No debug symbols will be generated.])
712          AC_MSG_NOTICE([objcopy reports version $OBJCOPY_VERSION])
713          AC_MSG_NOTICE([Note: patch 149063-01 or newer contains the correct Solaris 10 SPARC version])
714          AC_MSG_NOTICE([Note: patch 149064-01 or newer contains the correct Solaris 10 X86 version])
715          AC_MSG_NOTICE([Note: Solaris 11 Update 1 contains the correct version])
716        fi
717      fi
718    fi
719  fi
720
721  BASIC_CHECK_TOOLS(OBJDUMP, [gobjdump objdump])
722  if test "x$OBJDUMP" != x; then
723    # Only used for compare.sh; we can live without it. BASIC_FIXUP_EXECUTABLE
724    # bails if argument is missing.
725    BASIC_FIXUP_EXECUTABLE(OBJDUMP)
726  fi
727])
728
729# Setup the build tools (i.e, the compiler and linker used to build programs
730# that should be run on the build platform, not the target platform, as a build
731# helper). Since the non-cross-compile case uses the normal, target compilers
732# for this, we can only do this after these have been setup.
733AC_DEFUN_ONCE([TOOLCHAIN_SETUP_BUILD_COMPILERS],
734[
735  if test "x$COMPILE_TYPE" = "xcross"; then
736    # Now we need to find a C/C++ compiler that can build executables for the
737    # build platform. We can't use the AC_PROG_CC macro, since it can only be
738    # used once. Also, we need to do this without adding a tools dir to the
739    # path, otherwise we might pick up cross-compilers which don't use standard
740    # naming.
741
742    OLDPATH="$PATH"
743
744    AC_ARG_WITH(build-devkit, [AS_HELP_STRING([--with-build-devkit],
745        [Devkit to use for the build platform toolchain])])
746    if test "x$with_build_devkit" = "xyes"; then
747      AC_MSG_ERROR([--with-build-devkit must have a value])
748    elif test -n "$with_build_devkit"; then
749      if test ! -d "$with_build_devkit"; then
750        AC_MSG_ERROR([--with-build-devkit points to non existing dir: $with_build_devkit])
751      else
752        BASIC_FIXUP_PATH([with_build_devkit])
753        BUILD_DEVKIT_ROOT="$with_build_devkit"
754        # Check for a meta data info file in the root of the devkit
755        if test -f "$BUILD_DEVKIT_ROOT/devkit.info"; then
756          # Process devkit.info so that existing devkit variables are not
757          # modified by this
758          $SED -e "s/^DEVKIT_/BUILD_DEVKIT_/g" \
759              -e "s/\$DEVKIT_ROOT/\$BUILD_DEVKIT_ROOT/g" \
760              -e "s/\$host/\$build/g" \
761              $BUILD_DEVKIT_ROOT/devkit.info \
762              > $CONFIGURESUPPORT_OUTPUTDIR/build-devkit.info
763          . $CONFIGURESUPPORT_OUTPUTDIR/build-devkit.info
764          # This potentially sets the following:
765          # A descriptive name of the devkit
766          BASIC_EVAL_DEVKIT_VARIABLE([BUILD_DEVKIT_NAME])
767          # Corresponds to --with-extra-path
768          BASIC_EVAL_DEVKIT_VARIABLE([BUILD_DEVKIT_EXTRA_PATH])
769          # Corresponds to --with-toolchain-path
770          BASIC_EVAL_DEVKIT_VARIABLE([BUILD_DEVKIT_TOOLCHAIN_PATH])
771          # Corresponds to --with-sysroot
772          BASIC_EVAL_DEVKIT_VARIABLE([BUILD_DEVKIT_SYSROOT])
773          # Skip the Window specific parts
774        fi
775
776        AC_MSG_CHECKING([for build platform devkit])
777        if test "x$BUILD_DEVKIT_NAME" != x; then
778          AC_MSG_RESULT([$BUILD_DEVKIT_NAME in $BUILD_DEVKIT_ROOT])
779        else
780          AC_MSG_RESULT([$BUILD_DEVKIT_ROOT])
781        fi
782
783        BUILD_SYSROOT="$BUILD_DEVKIT_SYSROOT"
784        FLAGS_SETUP_SYSROOT_FLAGS([BUILD_])
785
786         # Fallback default of just /bin if DEVKIT_PATH is not defined
787        if test "x$BUILD_DEVKIT_TOOLCHAIN_PATH" = x; then
788          BUILD_DEVKIT_TOOLCHAIN_PATH="$BUILD_DEVKIT_ROOT/bin"
789        fi
790        PATH="$BUILD_DEVKIT_TOOLCHAIN_PATH:$BUILD_DEVKIT_EXTRA_PATH"
791      fi
792    fi
793
794    # FIXME: we should list the discovered compilers as an exclude pattern!
795    # If we do that, we can do this detection before POST_DETECTION, and still
796    # find the build compilers in the tools dir, if needed.
797    BASIC_REQUIRE_PROGS(BUILD_CC, [cl cc gcc])
798    BASIC_FIXUP_EXECUTABLE(BUILD_CC)
799    BASIC_REQUIRE_PROGS(BUILD_CXX, [cl CC g++])
800    BASIC_FIXUP_EXECUTABLE(BUILD_CXX)
801    BASIC_PATH_PROGS(BUILD_NM, nm gcc-nm)
802    BASIC_FIXUP_EXECUTABLE(BUILD_NM)
803    BASIC_PATH_PROGS(BUILD_AR, ar gcc-ar)
804    BASIC_FIXUP_EXECUTABLE(BUILD_AR)
805    BASIC_PATH_PROGS(BUILD_OBJCOPY, objcopy)
806    BASIC_FIXUP_EXECUTABLE(BUILD_OBJCOPY)
807    BASIC_PATH_PROGS(BUILD_STRIP, strip)
808    BASIC_FIXUP_EXECUTABLE(BUILD_STRIP)
809    # Assume the C compiler is the assembler
810    BUILD_AS="$BUILD_CC -c"
811    # Just like for the target compiler, use the compiler as linker
812    BUILD_LD="$BUILD_CC"
813    BUILD_LDCXX="$BUILD_CXX"
814
815    PATH="$OLDPATH"
816
817    TOOLCHAIN_EXTRACT_COMPILER_VERSION(BUILD_CC, [BuildC])
818    TOOLCHAIN_EXTRACT_COMPILER_VERSION(BUILD_CXX, [BuildC++])
819    TOOLCHAIN_PREPARE_FOR_VERSION_COMPARISONS([BUILD_], [OPENJDK_BUILD_])
820  else
821    # If we are not cross compiling, use the normal target compilers for
822    # building the build platform executables.
823    BUILD_CC="$CC"
824    BUILD_CXX="$CXX"
825    BUILD_LD="$LD"
826    BUILD_LDCXX="$LDCXX"
827    BUILD_NM="$NM"
828    BUILD_AS="$AS"
829    BUILD_OBJCOPY="$OBJCOPY"
830    BUILD_STRIP="$STRIP"
831    BUILD_SYSROOT_CFLAGS="$SYSROOT_CFLAGS"
832    BUILD_SYSROOT_LDFLAGS="$SYSROOT_LDFLAGS"
833    BUILD_AR="$AR"
834    
835    TOOLCHAIN_PREPARE_FOR_VERSION_COMPARISONS([], [OPENJDK_BUILD_])
836  fi
837
838  AC_SUBST(BUILD_CC)
839  AC_SUBST(BUILD_CXX)
840  AC_SUBST(BUILD_LD)
841  AC_SUBST(BUILD_LDCXX)
842  AC_SUBST(BUILD_NM)
843  AC_SUBST(BUILD_AS)
844  AC_SUBST(BUILD_SYSROOT_CFLAGS)
845  AC_SUBST(BUILD_SYSROOT_LDFLAGS)
846  AC_SUBST(BUILD_AR)
847])
848
849# Setup legacy variables that are still needed as alternative ways to refer to
850# parts of the toolchain.
851AC_DEFUN_ONCE([TOOLCHAIN_SETUP_LEGACY],
852[
853  if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
854    # For hotspot, we need these in Windows mixed path,
855    # so rewrite them all. Need added .exe suffix.
856    HOTSPOT_CXX="$CXX.exe"
857    HOTSPOT_LD="$LD.exe"
858    HOTSPOT_MT="$MT.exe"
859    HOTSPOT_RC="$RC.exe"
860    BASIC_WINDOWS_REWRITE_AS_WINDOWS_MIXED_PATH(HOTSPOT_CXX)
861    BASIC_WINDOWS_REWRITE_AS_WINDOWS_MIXED_PATH(HOTSPOT_LD)
862    BASIC_WINDOWS_REWRITE_AS_WINDOWS_MIXED_PATH(HOTSPOT_MT)
863    BASIC_WINDOWS_REWRITE_AS_WINDOWS_MIXED_PATH(HOTSPOT_RC)
864    AC_SUBST(HOTSPOT_MT)
865    AC_SUBST(HOTSPOT_RC)
866  else
867    HOTSPOT_CXX="$CXX"
868    HOTSPOT_LD="$LD"
869  fi
870  AC_SUBST(HOTSPOT_CXX)
871  AC_SUBST(HOTSPOT_LD)
872
873  if test  "x$TOOLCHAIN_TYPE" = xclang; then
874    USE_CLANG=true
875  fi
876  AC_SUBST(USE_CLANG)
877])
878
879# Do some additional checks on the detected tools.
880AC_DEFUN_ONCE([TOOLCHAIN_MISC_CHECKS],
881[
882  # The package path is used only on macosx?
883  # FIXME: clean this up, and/or move it elsewhere.
884  PACKAGE_PATH=/opt/local
885  AC_SUBST(PACKAGE_PATH)
886
887  # Check for extra potential brokenness.
888  if test  "x$TOOLCHAIN_TYPE" = xmicrosoft; then
889    # On Windows, double-check that we got the right compiler.
890    CC_VERSION_OUTPUT=`$CC 2>&1 | $HEAD -n 1 | $TR -d '\r'`
891    COMPILER_CPU_TEST=`$ECHO $CC_VERSION_OUTPUT | $SED -n "s/^.* \(.*\)$/\1/p"`
892    if test "x$OPENJDK_TARGET_CPU" = "xx86"; then
893      if test "x$COMPILER_CPU_TEST" != "x80x86" -a "x$COMPILER_CPU_TEST" != "xx86"; then
894        AC_MSG_ERROR([Target CPU mismatch. We are building for $OPENJDK_TARGET_CPU but CL is for "$COMPILER_CPU_TEST"; expected "80x86" or "x86".])
895      fi
896    elif test "x$OPENJDK_TARGET_CPU" = "xx86_64"; then
897      if test "x$COMPILER_CPU_TEST" != "xx64"; then
898        AC_MSG_ERROR([Target CPU mismatch. We are building for $OPENJDK_TARGET_CPU but CL is for "$COMPILER_CPU_TEST"; expected "x64".])
899      fi
900    fi
901  fi
902
903  if test "x$TOOLCHAIN_TYPE" = xgcc; then
904    # If this is a --hash-style=gnu system, use --hash-style=both, why?
905    HAS_GNU_HASH=`$CC -dumpspecs 2>/dev/null | $GREP 'hash-style=gnu'`
906    # This is later checked when setting flags.
907
908    # "-Og" suppported for GCC 4.8 and later
909    CFLAG_OPTIMIZE_DEBUG_FLAG="-Og"
910    FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$CFLAG_OPTIMIZE_DEBUG_FLAG],
911      IF_TRUE: [HAS_CFLAG_OPTIMIZE_DEBUG=true],
912      IF_FALSE: [HAS_CFLAG_OPTIMIZE_DEBUG=false])
913
914    # "-z relro" supported in GNU binutils 2.17 and later
915    LINKER_RELRO_FLAG="-Wl,-z,relro"
916    FLAGS_LINKER_CHECK_ARGUMENTS(ARGUMENT: [$LINKER_RELRO_FLAG],
917      IF_TRUE: [HAS_LINKER_RELRO=true],
918      IF_FALSE: [HAS_LINKER_RELRO=false])
919
920    # "-z now" supported in GNU binutils 2.11 and later
921    LINKER_NOW_FLAG="-Wl,-z,now"
922    FLAGS_LINKER_CHECK_ARGUMENTS(ARGUMENT: [$LINKER_NOW_FLAG],
923      IF_TRUE: [HAS_LINKER_NOW=true],
924      IF_FALSE: [HAS_LINKER_NOW=false])
925  fi
926
927  # Check for broken SuSE 'ld' for which 'Only anonymous version tag is allowed
928  # in executable.'
929  USING_BROKEN_SUSE_LD=no
930  if test "x$OPENJDK_TARGET_OS" = xlinux && test "x$TOOLCHAIN_TYPE" = xgcc; then
931    AC_MSG_CHECKING([for broken SuSE 'ld' which only understands anonymous version tags in executables])
932    $ECHO "SUNWprivate_1.1 { local: *; };" > version-script.map
933    $ECHO "int main() { }" > main.c
934    if $CXX -Wl,-version-script=version-script.map main.c 2>&AS_MESSAGE_LOG_FD >&AS_MESSAGE_LOG_FD; then
935      AC_MSG_RESULT(no)
936      USING_BROKEN_SUSE_LD=no
937    else
938      AC_MSG_RESULT(yes)
939      USING_BROKEN_SUSE_LD=yes
940    fi
941    $RM version-script.map main.c a.out
942  fi
943  AC_SUBST(USING_BROKEN_SUSE_LD)
944
945  # Setup hotspot lecagy names for toolchains
946  HOTSPOT_TOOLCHAIN_TYPE=$TOOLCHAIN_TYPE
947  if test "x$TOOLCHAIN_TYPE" = xclang; then
948    HOTSPOT_TOOLCHAIN_TYPE=gcc
949  elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
950    HOTSPOT_TOOLCHAIN_TYPE=sparcWorks
951  elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
952    HOTSPOT_TOOLCHAIN_TYPE=visCPP
953  fi
954  AC_SUBST(HOTSPOT_TOOLCHAIN_TYPE)
955])
956
957# Setup the JTReg Regression Test Harness.
958AC_DEFUN_ONCE([TOOLCHAIN_SETUP_JTREG],
959[
960  AC_ARG_WITH(jtreg, [AS_HELP_STRING([--with-jtreg],
961      [Regression Test Harness @<:@probed@:>@])],
962      [],
963      [with_jtreg=no])
964
965  if test "x$with_jtreg" = xno; then
966    # jtreg disabled
967    AC_MSG_CHECKING([for jtreg])
968    AC_MSG_RESULT(no)
969  else
970    if test "x$with_jtreg" != xyes; then
971      # with path specified.
972      JT_HOME="$with_jtreg"
973    fi
974
975    if test "x$JT_HOME" != x; then
976      AC_MSG_CHECKING([for jtreg])
977
978      # use JT_HOME enviroment var.
979      BASIC_FIXUP_PATH([JT_HOME])
980
981      # jtreg win32 script works for everybody
982      JTREGEXE="$JT_HOME/bin/jtreg"
983
984      if test ! -f "$JTREGEXE"; then
985        AC_MSG_ERROR([JTReg executable does not exist: $JTREGEXE])
986      fi
987
988      AC_MSG_RESULT($JTREGEXE)
989    else
990      # try to find jtreg on path
991      BASIC_REQUIRE_PROGS(JTREGEXE, jtreg)
992      JT_HOME="`$DIRNAME $JTREGEXE`"
993    fi
994  fi
995
996  AC_SUBST(JT_HOME)
997  AC_SUBST(JTREGEXE)
998])
999