1 #
  2 # Copyright (c) 2011, 2024, 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 # Set the debug level
 28 #    release: no debug information, all optimizations, no asserts.
 29 #    optimized: no debug information, all optimizations, no asserts, HotSpot target is 'optimized'.
 30 #    fastdebug: debug information (-g), all optimizations, all asserts
 31 #    slowdebug: debug information (-g), no optimizations, all asserts
 32 AC_DEFUN_ONCE([JDKOPT_SETUP_DEBUG_LEVEL],
 33 [
 34   DEBUG_LEVEL="release"
 35 
 36   UTIL_ARG_ENABLE(NAME: debug, DEFAULT: false, RESULT: ENABLE_DEBUG,
 37       DESC: [enable debugging (shorthand for --with-debug-level=fastdebug)],
 38       IF_ENABLED: [ DEBUG_LEVEL="fastdebug" ])
 39 
 40   AC_MSG_CHECKING([which debug level to use])
 41   AC_ARG_WITH([debug-level], [AS_HELP_STRING([--with-debug-level],
 42       [set the debug level (release, fastdebug, slowdebug, optimized) @<:@release@:>@])],
 43       [
 44         DEBUG_LEVEL="${withval}"
 45         if test "x$ENABLE_DEBUG" = xtrue; then
 46           AC_MSG_ERROR([You cannot use both --enable-debug and --with-debug-level at the same time.])
 47         fi
 48       ])
 49   AC_MSG_RESULT([$DEBUG_LEVEL])
 50 
 51   if test "x$DEBUG_LEVEL" != xrelease && \
 52       test "x$DEBUG_LEVEL" != xoptimized && \
 53       test "x$DEBUG_LEVEL" != xfastdebug && \
 54       test "x$DEBUG_LEVEL" != xslowdebug; then
 55     AC_MSG_ERROR([Allowed debug levels are: release, fastdebug, slowdebug and optimized])
 56   fi
 57 
 58   # Translate DEBUG_LEVEL to debug level used by Hotspot
 59   HOTSPOT_DEBUG_LEVEL="$DEBUG_LEVEL"
 60   if test "x$DEBUG_LEVEL" = xrelease; then
 61     HOTSPOT_DEBUG_LEVEL="product"
 62   elif test "x$DEBUG_LEVEL" = xslowdebug; then
 63     HOTSPOT_DEBUG_LEVEL="debug"
 64   fi
 65 
 66   if test "x$DEBUG_LEVEL" = xoptimized; then
 67     # The debug level 'optimized' is a little special because it is currently only
 68     # applicable to the HotSpot build where it means to build a completely
 69     # optimized version of the VM without any debugging code (like for the
 70     # 'release' debug level which is called 'product' in the HotSpot build) but
 71     # with the exception that it can contain additional code which is otherwise
 72     # protected by '#ifndef PRODUCT' macros. These 'optimized' builds are used to
 73     # test new and/or experimental features which are not intended for customer
 74     # shipment. Because these new features need to be tested and benchmarked in
 75     # real world scenarios, we want to build the containing JDK at the 'release'
 76     # debug level.
 77     DEBUG_LEVEL="release"
 78   fi
 79 
 80   AC_SUBST(HOTSPOT_DEBUG_LEVEL)
 81   AC_SUBST(DEBUG_LEVEL)
 82 ])
 83 
 84 ################################################################################
 85 #
 86 # Should we build only OpenJDK even if closed sources are present?
 87 #
 88 AC_DEFUN_ONCE([JDKOPT_SETUP_OPEN_OR_CUSTOM],
 89 [
 90   UTIL_ARG_ENABLE(NAME: openjdk-only, DEFAULT: false,
 91       RESULT: SUPPRESS_CUSTOM_EXTENSIONS,
 92       DESC: [suppress building custom source even if present],
 93       CHECKING_MSG: [if custom source is suppressed (openjdk-only)])
 94 ])
 95 
 96 AC_DEFUN_ONCE([JDKOPT_SETUP_JDK_OPTIONS],
 97 [
 98   # Should we build a JDK without a graphical UI?
 99   UTIL_ARG_ENABLE(NAME: headless-only, DEFAULT: false,
100       RESULT: ENABLE_HEADLESS_ONLY,
101       DESC: [only build headless (no GUI) support],
102       CHECKING_MSG: [if we should build headless-only (no GUI)])
103   AC_SUBST(ENABLE_HEADLESS_ONLY)
104 
105   # should we linktime gc unused code sections in the JDK build ?
106   if test "x$OPENJDK_TARGET_OS" = "xlinux" && test "x$OPENJDK_TARGET_CPU" = xs390x; then
107     LINKTIME_GC_DEFAULT=true
108   else
109     LINKTIME_GC_DEFAULT=false
110   fi
111 
112   UTIL_ARG_ENABLE(NAME: linktime-gc, DEFAULT: $LINKTIME_GC_DEFAULT,
113       DEFAULT_DESC: [auto], RESULT: ENABLE_LINKTIME_GC,
114       DESC: [use link time gc on unused code sections in the JDK build],
115       CHECKING_MSG: [if linker should clean out unused code (linktime-gc)])
116   AC_SUBST(ENABLE_LINKTIME_GC)
117 
118   # Check for full doc dependencies
119   FULL_DOCS_AVAILABLE=true
120   AC_MSG_CHECKING([for graphviz dot])
121   if test "x$DOT" != "x"; then
122     AC_MSG_RESULT([yes])
123   else
124     AC_MSG_RESULT([no, cannot generate full docs])
125     FULL_DOCS_AVAILABLE=false
126   fi
127 
128   AC_MSG_CHECKING([for pandoc])
129   if test "x$ENABLE_PANDOC" = "xtrue"; then
130     AC_MSG_RESULT([yes])
131   else
132     AC_MSG_RESULT([no, cannot generate full docs])
133     FULL_DOCS_AVAILABLE=false
134   fi
135 
136   # Should we build the complete docs, or just a lightweight version?
137   UTIL_ARG_ENABLE(NAME: full-docs, DEFAULT: auto, RESULT: ENABLE_FULL_DOCS,
138       AVAILABLE: $FULL_DOCS_AVAILABLE, DESC: [build complete documentation],
139       DEFAULT_DESC: [enabled if all tools found])
140   AC_SUBST(ENABLE_FULL_DOCS)
141 
142   # Choose cacerts source file
143   AC_ARG_WITH(cacerts-file, [AS_HELP_STRING([--with-cacerts-file],
144       [specify alternative cacerts file])])
145   AC_MSG_CHECKING([for cacerts file])
146   if test "x$with_cacerts_file" == x; then
147     AC_MSG_RESULT([default])
148   else
149     CACERTS_FILE=$with_cacerts_file
150     if test ! -f "$CACERTS_FILE"; then
151       AC_MSG_RESULT([fail])
152       AC_MSG_ERROR([Specified cacerts file "$CACERTS_FILE" does not exist])
153     fi
154     AC_MSG_RESULT([$CACERTS_FILE])
155   fi
156   AC_SUBST(CACERTS_FILE)
157 
158   # Choose cacerts source folder for user provided PEM files
159   AC_ARG_WITH(cacerts-src, [AS_HELP_STRING([--with-cacerts-src],
160       [specify alternative cacerts source folder containing certificates])])
161   CACERTS_SRC=""
162   AC_MSG_CHECKING([for cacerts source])
163   if test "x$with_cacerts_src" == x; then
164     AC_MSG_RESULT([default])
165   else
166     CACERTS_SRC=$with_cacerts_src
167     if test ! -d "$CACERTS_SRC"; then
168       AC_MSG_RESULT([fail])
169       AC_MSG_ERROR([Specified cacerts source folder "$CACERTS_SRC" does not exist])
170     fi
171     AC_MSG_RESULT([$CACERTS_SRC])
172   fi
173   AC_SUBST(CACERTS_SRC)
174 
175   # Enable or disable unlimited crypto
176   UTIL_ARG_ENABLE(NAME: unlimited-crypto, DEFAULT: true, RESULT: UNLIMITED_CRYPTO,
177       DESC: [enable unlimited crypto policy])
178   AC_SUBST(UNLIMITED_CRYPTO)
179 
180   # Should we build the serviceability agent (SA)?
181   INCLUDE_SA=true
182   if HOTSPOT_CHECK_JVM_VARIANT(zero); then
183     INCLUDE_SA=false
184   fi
185   if test "x$OPENJDK_TARGET_OS" = xaix ; then
186     INCLUDE_SA=false
187   fi
188   if test "x$OPENJDK_TARGET_CPU" = xs390x ; then
189     INCLUDE_SA=false
190   fi
191   AC_SUBST(INCLUDE_SA)
192 
193   # Setup default CDS alignment. On platforms where one build may run on machines with different
194   # page sizes, the JVM choses a compatible alignment to fit all possible page sizes. This slightly
195   # increases archive size.
196   # The only platform having this problem at the moment is Linux on aarch64, which may encounter
197   # three different page sizes: 4K, 64K, and if run on Mac m1 hardware, 16K.
198   COMPATIBLE_CDS_ALIGNMENT_DEFAULT=false
199   if test "x$OPENJDK_TARGET_OS" = "xlinux" && test "x$OPENJDK_TARGET_CPU" = "xaarch64"; then
200     COMPATIBLE_CDS_ALIGNMENT_DEFAULT=auto
201   fi
202 
203   # Compress jars
204   COMPRESS_JARS=false
205 
206   AC_SUBST(COMPRESS_JARS)
207 
208   # Setup default copyright year. Mostly overridden when building close to a new year.
209   AC_ARG_WITH(copyright-year, [AS_HELP_STRING([--with-copyright-year],
210       [Set copyright year value for build @<:@current year/source-date@:>@])])
211   if test "x$with_copyright_year" = xyes; then
212     AC_MSG_ERROR([Copyright year must have a value])
213   elif test "x$with_copyright_year" != x; then
214     COPYRIGHT_YEAR="$with_copyright_year"
215   elif test "x$SOURCE_DATE" != xupdated; then
216     if test "x$IS_GNU_DATE" = xyes; then
217       COPYRIGHT_YEAR=`$DATE --date=@$SOURCE_DATE +%Y`
218     else
219       COPYRIGHT_YEAR=`$DATE -j -f %s $SOURCE_DATE +%Y`
220     fi
221   else
222     COPYRIGHT_YEAR=`$DATE +'%Y'`
223   fi
224   AC_SUBST(COPYRIGHT_YEAR)
225 
226   # Override default library path
227   AC_ARG_WITH([jni-libpath], [AS_HELP_STRING([--with-jni-libpath],
228       [override default JNI library search path])])
229   AC_MSG_CHECKING([for jni library path])
230   if test "x${with_jni_libpath}" = "x" || test "x${with_jni_libpath}" = "xno"; then
231     AC_MSG_RESULT([default])
232   elif test "x${with_jni_libpath}" = "xyes"; then
233     AC_MSG_RESULT([invalid])
234     AC_MSG_ERROR([The --with-jni-libpath option requires an argument.])
235   else
236     HOTSPOT_OVERRIDE_LIBPATH=${with_jni_libpath}
237     if test "x$OPENJDK_TARGET_OS" != "xlinux" &&
238         test "x$OPENJDK_TARGET_OS" != "xbsd" &&
239         test "x$OPENJDK_TARGET_OS" != "xaix"; then
240       AC_MSG_RESULT([fail])
241       AC_MSG_ERROR([Overriding JNI library path is supported only on Linux, BSD and AIX.])
242     fi
243     AC_MSG_RESULT(${HOTSPOT_OVERRIDE_LIBPATH})
244   fi
245   AC_SUBST(HOTSPOT_OVERRIDE_LIBPATH)
246 
247 ])
248 
249 ################################################################################
250 
251 AC_DEFUN_ONCE([JDKOPT_SETUP_DEBUG_SYMBOLS],
252 [
253   #
254   # Native debug symbols.
255   # This must be done after the toolchain is setup, since we're looking at objcopy.
256   #
257   AC_MSG_CHECKING([what type of native debug symbols to use])
258   AC_ARG_WITH([native-debug-symbols],
259       [AS_HELP_STRING([--with-native-debug-symbols],
260       [set the native debug symbol configuration (none, internal, external, zipped) @<:@varying@:>@])],
261       [
262         if test "x$OPENJDK_TARGET_OS" = xwindows; then
263           if test "x$withval" = xinternal; then
264             AC_MSG_ERROR([Windows does not support the parameter 'internal' for --with-native-debug-symbols])
265           fi
266         fi
267       ],
268       [
269         with_native_debug_symbols="external"
270       ])
271   AC_MSG_RESULT([$with_native_debug_symbols])
272 
273   if test "x$with_native_debug_symbols" = xnone; then
274     COMPILE_WITH_DEBUG_SYMBOLS=false
275     COPY_DEBUG_SYMBOLS=false
276     ZIP_EXTERNAL_DEBUG_SYMBOLS=false
277   elif test "x$with_native_debug_symbols" = xinternal; then
278     COMPILE_WITH_DEBUG_SYMBOLS=true
279     COPY_DEBUG_SYMBOLS=false
280     ZIP_EXTERNAL_DEBUG_SYMBOLS=false
281   elif test "x$with_native_debug_symbols" = xexternal; then
282 
283     if test "x$OPENJDK_TARGET_OS" = xlinux; then
284       if test "x$OBJCOPY" = x; then
285         # enabling of enable-debug-symbols and can't find objcopy
286         # this is an error
287         AC_MSG_ERROR([Unable to find objcopy, cannot enable native debug symbols])
288       fi
289     fi
290 
291     COMPILE_WITH_DEBUG_SYMBOLS=true
292     COPY_DEBUG_SYMBOLS=true
293     ZIP_EXTERNAL_DEBUG_SYMBOLS=false
294   elif test "x$with_native_debug_symbols" = xzipped; then
295 
296     if test "x$OPENJDK_TARGET_OS" = xlinux; then
297       if test "x$OBJCOPY" = x; then
298         # enabling of enable-debug-symbols and can't find objcopy
299         # this is an error
300         AC_MSG_ERROR([Unable to find objcopy, cannot enable native debug symbols])
301       fi
302     fi
303 
304     COMPILE_WITH_DEBUG_SYMBOLS=true
305     COPY_DEBUG_SYMBOLS=true
306     ZIP_EXTERNAL_DEBUG_SYMBOLS=true
307   else
308     AC_MSG_ERROR([Allowed native debug symbols are: none, internal, external, zipped])
309   fi
310 
311   AC_SUBST(COMPILE_WITH_DEBUG_SYMBOLS)
312   AC_SUBST(COPY_DEBUG_SYMBOLS)
313   AC_SUBST(ZIP_EXTERNAL_DEBUG_SYMBOLS)
314 
315   # Should we add external native debug symbols to the shipped bundles?
316   AC_MSG_CHECKING([if we should add external native debug symbols to the shipped bundles])
317   AC_ARG_WITH([external-symbols-in-bundles],
318       [AS_HELP_STRING([--with-external-symbols-in-bundles],
319       [which type of external native debug symbol information shall be shipped in product bundles (none, public, full)
320       (e.g. ship full/stripped pdbs on Windows) @<:@none@:>@])])
321 
322   if test "x$with_external_symbols_in_bundles" = x || test "x$with_external_symbols_in_bundles" = xnone ; then
323     AC_MSG_RESULT([no])
324   elif test "x$with_external_symbols_in_bundles" = xfull || test "x$with_external_symbols_in_bundles" = xpublic ; then
325     if test "x$OPENJDK_TARGET_OS" != xwindows ; then
326       AC_MSG_ERROR([--with-external-symbols-in-bundles currently only works on windows!])
327     elif test "x$COPY_DEBUG_SYMBOLS" != xtrue ; then
328       AC_MSG_ERROR([--with-external-symbols-in-bundles only works when --with-native-debug-symbols=external is used!])
329     elif test "x$with_external_symbols_in_bundles" = xfull ; then
330       AC_MSG_RESULT([full])
331       SHIP_DEBUG_SYMBOLS=full
332     else
333       AC_MSG_RESULT([public])
334       SHIP_DEBUG_SYMBOLS=public
335     fi
336   else
337     AC_MSG_ERROR([$with_external_symbols_in_bundles is an unknown value for --with-external-symbols-in-bundles])
338   fi
339 
340   AC_SUBST(SHIP_DEBUG_SYMBOLS)
341 ])
342 
343 ################################################################################
344 #
345 # Native and Java code coverage
346 #
347 AC_DEFUN_ONCE([JDKOPT_SETUP_CODE_COVERAGE],
348 [
349   UTIL_ARG_ENABLE(NAME: native-coverage, DEFAULT: false, RESULT: GCOV_ENABLED,
350       DESC: [enable native compilation with code coverage data],
351       CHECK_AVAILABLE: [
352         AC_MSG_CHECKING([if native coverage is available])
353         if test "x$TOOLCHAIN_TYPE" = "xgcc" ||
354             test "x$TOOLCHAIN_TYPE" = "xclang"; then
355           AC_MSG_RESULT([yes])
356         else
357           AC_MSG_RESULT([no])
358           AVAILABLE=false
359         fi
360       ],
361       IF_ENABLED: [
362         GCOV_CFLAGS="-fprofile-arcs -ftest-coverage -fno-inline"
363         GCOV_LDFLAGS="-fprofile-arcs"
364         JVM_CFLAGS="$JVM_CFLAGS $GCOV_CFLAGS"
365         JVM_LDFLAGS="$JVM_LDFLAGS $GCOV_LDFLAGS"
366         CFLAGS_JDKLIB="$CFLAGS_JDKLIB $GCOV_CFLAGS"
367         CFLAGS_JDKEXE="$CFLAGS_JDKEXE $GCOV_CFLAGS"
368         CXXFLAGS_JDKLIB="$CXXFLAGS_JDKLIB $GCOV_CFLAGS"
369         CXXFLAGS_JDKEXE="$CXXFLAGS_JDKEXE $GCOV_CFLAGS"
370         LDFLAGS_JDKLIB="$LDFLAGS_JDKLIB $GCOV_LDFLAGS"
371         LDFLAGS_JDKEXE="$LDFLAGS_JDKEXE $GCOV_LDFLAGS"
372       ])
373   AC_SUBST(GCOV_ENABLED)
374 
375   AC_ARG_WITH(jcov, [AS_HELP_STRING([--with-jcov],
376       [jcov library location])])
377   AC_ARG_WITH(jcov-input-jdk, [AS_HELP_STRING([--with-jcov-input-jdk],
378       [jdk image to instrument])])
379   AC_ARG_WITH(jcov-filters, [AS_HELP_STRING([--with-jcov-filters],
380       [filters to limit code for jcov instrumentation and report generation])])
381   JCOV_HOME=
382   JCOV_INPUT_JDK=
383   JCOV_ENABLED=
384   JCOV_FILTERS=
385   if test "x$with_jcov" = "x" ; then
386     JCOV_ENABLED="false"
387   else
388     JCOV_HOME="$with_jcov"
389     if test ! -f "$JCOV_HOME/lib/jcov.jar"; then
390       AC_MSG_RESULT([fail])
391       AC_MSG_ERROR([Invalid JCov bundle: "$JCOV_HOME/lib/jcov.jar" does not exist])
392     fi
393     JCOV_ENABLED="true"
394     UTIL_FIXUP_PATH(JCOV_HOME)
395     if test "x$with_jcov_input_jdk" != "x" ; then
396       JCOV_INPUT_JDK="$with_jcov_input_jdk"
397       if test ! -f "$JCOV_INPUT_JDK/bin/java" && test ! -f "$JCOV_INPUT_JDK/bin/java.exe"; then
398         AC_MSG_RESULT([fail])
399         AC_MSG_ERROR([Invalid JDK bundle: "$JCOV_INPUT_JDK/bin/java" does not exist])
400       fi
401       UTIL_FIXUP_PATH(JCOV_INPUT_JDK)
402     fi
403     if test "x$with_jcov_filters" != "x" ; then
404       JCOV_FILTERS="$with_jcov_filters"
405     fi
406   fi
407   AC_SUBST(JCOV_ENABLED)
408   AC_SUBST(JCOV_HOME)
409   AC_SUBST(JCOV_INPUT_JDK)
410   AC_SUBST(JCOV_FILTERS)
411 ])
412 
413 ################################################################################
414 #
415 # AddressSanitizer
416 #
417 AC_DEFUN_ONCE([JDKOPT_SETUP_ADDRESS_SANITIZER],
418 [
419   UTIL_ARG_ENABLE(NAME: asan, DEFAULT: false, RESULT: ASAN_ENABLED,
420       DESC: [enable AddressSanitizer],
421       CHECK_AVAILABLE: [
422         AC_MSG_CHECKING([if AddressSanitizer (asan) is available])
423         if test "x$TOOLCHAIN_TYPE" = "xgcc" ||
424             test "x$TOOLCHAIN_TYPE" = "xclang" ||
425             test "x$TOOLCHAIN_TYPE" = "xmicrosoft"; then
426           AC_MSG_RESULT([yes])
427         else
428           AC_MSG_RESULT([no])
429           AVAILABLE=false
430         fi
431       ],
432       IF_ENABLED: [
433         if test "x$TOOLCHAIN_TYPE" = "xgcc" ||
434             test "x$TOOLCHAIN_TYPE" = "xclang"; then
435           # ASan is simply incompatible with gcc -Wstringop-truncation. See
436           # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85650
437           # It's harmless to be suppressed in clang as well.
438           ASAN_CFLAGS="-fsanitize=address -Wno-stringop-truncation -fno-omit-frame-pointer -fno-common -DADDRESS_SANITIZER"
439           ASAN_LDFLAGS="-fsanitize=address"
440           # detect_stack_use_after_return causes ASAN to offload stack-local
441           # variables to c-heap and therefore breaks assumptions in hotspot
442           # that rely on data (e.g. Marks) living in thread stacks.
443           if test "x$TOOLCHAIN_TYPE" = "xgcc"; then
444             ASAN_CFLAGS="$ASAN_CFLAGS --param asan-use-after-return=0"
445           fi
446           if test "x$TOOLCHAIN_TYPE" = "xclang"; then
447             ASAN_CFLAGS="$ASAN_CFLAGS -fsanitize-address-use-after-return=never"
448           fi
449         elif test "x$TOOLCHAIN_TYPE" = "xmicrosoft"; then
450           # -Oy- is equivalent to -fno-omit-frame-pointer in GCC/Clang.
451           ASAN_CFLAGS="-fsanitize=address -Oy- -DADDRESS_SANITIZER"
452           # MSVC produces a warning if you pass -fsanitize=address to the linker. It also complains
453           $ if -DEBUG is not passed to the linker when building with ASan.
454           ASAN_LDFLAGS="-debug"
455           # -fsanitize-address-use-after-return is off by default in MS Visual Studio 22 (19.37.32824).
456           # cl : Command line warning D9002 : ignoring unknown option '-fno-sanitize-address-use-after-return'
457         fi
458         JVM_CFLAGS="$JVM_CFLAGS $ASAN_CFLAGS"
459         JVM_LDFLAGS="$JVM_LDFLAGS $ASAN_LDFLAGS"
460         CFLAGS_JDKLIB="$CFLAGS_JDKLIB $ASAN_CFLAGS"
461         CFLAGS_JDKEXE="$CFLAGS_JDKEXE $ASAN_CFLAGS"
462         CXXFLAGS_JDKLIB="$CXXFLAGS_JDKLIB $ASAN_CFLAGS"
463         CXXFLAGS_JDKEXE="$CXXFLAGS_JDKEXE $ASAN_CFLAGS"
464         LDFLAGS_JDKLIB="$LDFLAGS_JDKLIB $ASAN_LDFLAGS"
465         LDFLAGS_JDKEXE="$LDFLAGS_JDKEXE $ASAN_LDFLAGS"
466       ])
467   AC_SUBST(ASAN_ENABLED)
468 ])
469 
470 ################################################################################
471 #
472 # LeakSanitizer
473 #
474 AC_DEFUN_ONCE([JDKOPT_SETUP_LEAK_SANITIZER],
475 [
476   UTIL_ARG_ENABLE(NAME: lsan, DEFAULT: false, RESULT: LSAN_ENABLED,
477       DESC: [enable LeakSanitizer],
478       CHECK_AVAILABLE: [
479         AC_MSG_CHECKING([if LeakSanitizer (lsan) is available])
480         if test "x$TOOLCHAIN_TYPE" = "xgcc" ||
481             test "x$TOOLCHAIN_TYPE" = "xclang"; then
482           AC_MSG_RESULT([yes])
483         else
484           AC_MSG_RESULT([no])
485           AVAILABLE=false
486         fi
487       ],
488       IF_ENABLED: [
489         LSAN_CFLAGS="-fsanitize=leak -fno-omit-frame-pointer -DLEAK_SANITIZER"
490         LSAN_LDFLAGS="-fsanitize=leak"
491         JVM_CFLAGS="$JVM_CFLAGS $LSAN_CFLAGS"
492         JVM_LDFLAGS="$JVM_LDFLAGS $LSAN_LDFLAGS"
493         CFLAGS_JDKLIB="$CFLAGS_JDKLIB $LSAN_CFLAGS"
494         CFLAGS_JDKEXE="$CFLAGS_JDKEXE $LSAN_CFLAGS"
495         CXXFLAGS_JDKLIB="$CXXFLAGS_JDKLIB $LSAN_CFLAGS"
496         CXXFLAGS_JDKEXE="$CXXFLAGS_JDKEXE $LSAN_CFLAGS"
497         LDFLAGS_JDKLIB="$LDFLAGS_JDKLIB $LSAN_LDFLAGS"
498         LDFLAGS_JDKEXE="$LDFLAGS_JDKEXE $LSAN_LDFLAGS"
499       ])
500   AC_SUBST(LSAN_ENABLED)
501 ])
502 
503 ################################################################################
504 #
505 # UndefinedBehaviorSanitizer
506 #
507 AC_DEFUN_ONCE([JDKOPT_SETUP_UNDEFINED_BEHAVIOR_SANITIZER],
508 [
509   UTIL_ARG_WITH(NAME: additional-ubsan-checks, TYPE: string,
510       DEFAULT: [],
511       DESC: [Customizes the ubsan checks],
512       OPTIONAL: true)
513 
514   # GCC reports lots of likely false positives for stringop-truncation and format-overflow.
515   # Silence them for now.
516   UBSAN_CHECKS="-fsanitize=undefined -fsanitize=float-divide-by-zero -fno-sanitize=shift-base -fno-sanitize=alignment \
517       $ADDITIONAL_UBSAN_CHECKS"
518   UBSAN_CFLAGS="$UBSAN_CHECKS -Wno-stringop-truncation -Wno-format-overflow -fno-omit-frame-pointer -DUNDEFINED_BEHAVIOR_SANITIZER"
519   UBSAN_LDFLAGS="$UBSAN_CHECKS"
520   UTIL_ARG_ENABLE(NAME: ubsan, DEFAULT: false, RESULT: UBSAN_ENABLED,
521       DESC: [enable UndefinedBehaviorSanitizer],
522       CHECK_AVAILABLE: [
523         AC_MSG_CHECKING([if UndefinedBehaviorSanitizer (ubsan) is available])
524         if test "x$TOOLCHAIN_TYPE" = "xgcc" ||
525             test "x$TOOLCHAIN_TYPE" = "xclang"; then
526           AC_MSG_RESULT([yes])
527         else
528           AC_MSG_RESULT([no])
529           AVAILABLE=false
530         fi
531       ],
532       IF_ENABLED: [
533         JVM_CFLAGS="$JVM_CFLAGS $UBSAN_CFLAGS"
534         JVM_LDFLAGS="$JVM_LDFLAGS $UBSAN_LDFLAGS"
535         CFLAGS_JDKLIB="$CFLAGS_JDKLIB $UBSAN_CFLAGS"
536         CFLAGS_JDKEXE="$CFLAGS_JDKEXE $UBSAN_CFLAGS"
537         CXXFLAGS_JDKLIB="$CXXFLAGS_JDKLIB $UBSAN_CFLAGS"
538         CXXFLAGS_JDKEXE="$CXXFLAGS_JDKEXE $UBSAN_CFLAGS"
539         LDFLAGS_JDKLIB="$LDFLAGS_JDKLIB $UBSAN_LDFLAGS"
540         LDFLAGS_JDKEXE="$LDFLAGS_JDKEXE $UBSAN_LDFLAGS"
541       ])
542   if test "x$UBSAN_ENABLED" = xfalse; then
543     UBSAN_CFLAGS=""
544     UBSAN_LDFLAGS=""
545   fi
546   AC_SUBST(UBSAN_CFLAGS)
547   AC_SUBST(UBSAN_LDFLAGS)
548   AC_SUBST(UBSAN_ENABLED)
549 ])
550 
551 ################################################################################
552 #
553 # Static build support.  When enabled will generate static
554 # libraries instead of shared libraries for all JDK libs.
555 #
556 AC_DEFUN_ONCE([JDKOPT_SETUP_STATIC_BUILD],
557 [
558   UTIL_DEPRECATED_ARG_ENABLE(static-build)
559 ])
560 
561 ################################################################################
562 #
563 # jmod options.
564 #
565 AC_DEFUN_ONCE([JDKOPT_SETUP_JMOD_OPTIONS],
566 [
567   # Final JMODs are recompiled often during development, and java.base JMOD
568   # includes the JVM libraries. In release mode, prefer to compress JMODs fully.
569   # In debug mode, pay with a little extra space, but win a lot of CPU time back
570   # with the lightest (but still some) compression.
571   if test "x$DEBUG_LEVEL" = xrelease; then
572     DEFAULT_JMOD_COMPRESS="zip-6"
573   else
574     DEFAULT_JMOD_COMPRESS="zip-1"
575   fi
576 
577   UTIL_ARG_WITH(NAME: jmod-compress, TYPE: literal,
578     VALID_VALUES: [zip-0 zip-1 zip-2 zip-3 zip-4 zip-5 zip-6 zip-7 zip-8 zip-9],
579     DEFAULT: $DEFAULT_JMOD_COMPRESS,
580     CHECKING_MSG: [for JMOD compression type],
581     DESC: [specify JMOD compression type (zip-[0-9])]
582   )
583   AC_SUBST(JMOD_COMPRESS)
584 ])
585 
586 ################################################################################
587 #
588 # jlink options.
589 #
590 AC_DEFUN_ONCE([JDKOPT_SETUP_JLINK_OPTIONS],
591 [
592 
593   ################################################################################
594   #
595   # Configure option for building a JDK that is suitable for linking from the
596   # run-time image without JMODs.
597   #
598   # Determines whether or not a suitable run-time image is being produced from
599   # packaged modules. If set to 'true, changes the *default* of packaged
600   # modules to 'false'.
601   #
602   UTIL_ARG_ENABLE(NAME: linkable-runtime, DEFAULT: false,
603       RESULT: JLINK_PRODUCE_LINKABLE_RUNTIME,
604       DESC: [enable a JDK build suitable for linking from the run-time image],
605       CHECKING_MSG: [whether or not a JDK suitable for linking from the run-time image should be produced])
606   AC_SUBST(JLINK_PRODUCE_LINKABLE_RUNTIME)
607 
608   if test "x$JLINK_PRODUCE_LINKABLE_RUNTIME" = xtrue; then
609     DEFAULT_PACKAGED_MODULES=false
610   else
611     DEFAULT_PACKAGED_MODULES=true
612   fi
613 
614   ################################################################################
615   #
616   # Configure option for packaged modules
617   #
618   # We keep packaged modules in the JDK image unless --enable-linkable-runtime is
619   # requested.
620   #
621   UTIL_ARG_ENABLE(NAME: keep-packaged-modules, DEFAULT: $DEFAULT_PACKAGED_MODULES,
622       RESULT: JLINK_KEEP_PACKAGED_MODULES,
623       DESC: [enable keeping of packaged modules in jdk image],
624       DEFAULT_DESC: [enabled by default unless --enable-linkable-runtime is set],
625       CHECKING_MSG: [if packaged modules are kept])
626   AC_SUBST(JLINK_KEEP_PACKAGED_MODULES)
627 ])
628 
629 ################################################################################
630 #
631 # Enable or disable generation of the classlist at build time
632 #
633 AC_DEFUN_ONCE([JDKOPT_ENABLE_DISABLE_GENERATE_CLASSLIST],
634 [
635   # In GenerateLinkOptData.gmk, DumpLoadedClassList is used to generate the
636   # classlist file. It never will work if CDS is disabled, since the VM will report
637   # an error for DumpLoadedClassList.
638   UTIL_ARG_ENABLE(NAME: generate-classlist, DEFAULT: auto,
639       RESULT: ENABLE_GENERATE_CLASSLIST, AVAILABLE: $ENABLE_CDS,
640       DESC: [enable generation of a CDS classlist at build time],
641       DEFAULT_DESC: [enabled if the JVM feature 'cds' is enabled for all JVM variants],
642       CHECKING_MSG: [if the CDS classlist generation should be enabled])
643   AC_SUBST(ENABLE_GENERATE_CLASSLIST)
644 ])
645 
646 ################################################################################
647 #
648 # Optionally filter resource translations
649 #
650 AC_DEFUN([JDKOPT_EXCLUDE_TRANSLATIONS],
651 [
652   AC_ARG_WITH([exclude-translations], [AS_HELP_STRING([--with-exclude-translations],
653       [a comma separated list of locales to exclude translations for. Default is
654       to include all translations present in the source.])])
655 
656   EXCLUDE_TRANSLATIONS=""
657   AC_MSG_CHECKING([if any translations should be excluded])
658   if test "x$with_exclude_translations" != "x"; then
659     EXCLUDE_TRANSLATIONS="${with_exclude_translations//,/ }"
660     AC_MSG_RESULT([yes: $EXCLUDE_TRANSLATIONS])
661   else
662     AC_MSG_RESULT([no])
663   fi
664 
665   AC_SUBST(EXCLUDE_TRANSLATIONS)
666 ])
667 
668 ################################################################################
669 #
670 # Optionally disable man pages (deprecated)
671 #
672 AC_DEFUN([JDKOPT_ENABLE_DISABLE_MANPAGES],
673 [
674   UTIL_DEPRECATED_ARG_ENABLE(manpages)
675 ])
676 
677 ################################################################################
678 #
679 # Disable the default CDS archive generation
680 #
681 AC_DEFUN([JDKOPT_ENABLE_DISABLE_CDS_ARCHIVE],
682 [
683   UTIL_ARG_ENABLE(NAME: cds-archive, DEFAULT: auto, RESULT: BUILD_CDS_ARCHIVE,
684       DESC: [enable generation of a default CDS archive in the product image],
685       DEFAULT_DESC: [enabled if possible],
686       CHECKING_MSG: [if a default CDS archive should be generated],
687       CHECK_AVAILABLE: [
688         AC_MSG_CHECKING([if CDS archive is available])
689         if test "x$ENABLE_CDS" = "xfalse"; then
690           AC_MSG_RESULT([no (CDS is disabled)])
691           AVAILABLE=false
692         elif test "x$COMPILE_TYPE" = "xcross"; then
693           AC_MSG_RESULT([no (not possible with cross compilation)])
694           AVAILABLE=false
695         else
696           AC_MSG_RESULT([yes])
697         fi
698       ])
699   AC_SUBST(BUILD_CDS_ARCHIVE)
700 ])
701 
702 ################################################################################
703 #
704 # Enable or disable the default CDS archive generation for Compact Object Headers
705 #
706 # Default disabled within Valhalla until support added (JDK-8348568)
707 #
708 AC_DEFUN([JDKOPT_ENABLE_DISABLE_CDS_ARCHIVE_COH],
709 [
710   UTIL_ARG_ENABLE(NAME: cds-archive-coh, DEFAULT: false, RESULT: BUILD_CDS_ARCHIVE_COH,
711       DESC: [enable generation of default CDS archives for compact object headers (requires --enable-cds-archive)],
712       DEFAULT_DESC: [auto],
713       CHECKING_MSG: [if default CDS archives for compact object headers should be generated],
714       CHECK_AVAILABLE: [
715         AC_MSG_CHECKING([if CDS archive with compact object headers is available])
716         if test "x$BUILD_CDS_ARCHIVE" = "xfalse"; then
717           AC_MSG_RESULT([no (CDS default archive generation is disabled)])
718           AVAILABLE=false
719         elif test "x$OPENJDK_TARGET_CPU" != "xx86_64" &&
720              test "x$OPENJDK_TARGET_CPU" != "xaarch64" &&
721              test "x$OPENJDK_TARGET_CPU" != "xppc64" &&
722              test "x$OPENJDK_TARGET_CPU" != "xppc64le" &&
723              test "x$OPENJDK_TARGET_CPU" != "xriscv64" &&
724              test "x$OPENJDK_TARGET_CPU" != "xs390x"; then
725           AC_MSG_RESULT([no (compact object headers not supported for this platform)])
726           AVAILABLE=false
727         else
728           AC_MSG_RESULT([yes])
729           AVAILABLE=true
730         fi
731       ])
732   AC_SUBST(BUILD_CDS_ARCHIVE_COH)
733 ])
734 
735 ################################################################################
736 #
737 # Enable the alternative CDS core region alignment
738 #
739 AC_DEFUN([JDKOPT_ENABLE_DISABLE_COMPATIBLE_CDS_ALIGNMENT],
740 [
741   UTIL_ARG_ENABLE(NAME: compatible-cds-alignment, DEFAULT: $COMPATIBLE_CDS_ALIGNMENT_DEFAULT,
742       RESULT: ENABLE_COMPATIBLE_CDS_ALIGNMENT,
743       DESC: [enable use alternative compatible cds core region alignment],
744       DEFAULT_DESC: [disabled except on linux-aarch64],
745       CHECKING_MSG: [if compatible cds region alignment enabled],
746       CHECK_AVAILABLE: [
747         AC_MSG_CHECKING([if CDS archive is available])
748         if test "x$ENABLE_CDS" = "xfalse"; then
749           AVAILABLE=false
750           AC_MSG_RESULT([no (CDS is disabled)])
751         else
752           AVAILABLE=true
753           AC_MSG_RESULT([yes])
754         fi
755       ])
756   AC_SUBST(ENABLE_COMPATIBLE_CDS_ALIGNMENT)
757 ])
758 
759 ################################################################################
760 #
761 # Disallow any output from containing absolute paths from the build system.
762 # This setting defaults to allowed on debug builds and not allowed on release
763 # builds.
764 #
765 AC_DEFUN([JDKOPT_ALLOW_ABSOLUTE_PATHS_IN_OUTPUT],
766 [
767   AC_ARG_ENABLE([absolute-paths-in-output],
768       [AS_HELP_STRING([--disable-absolute-paths-in-output],
769       [Set to disable to prevent any absolute paths from the build to end up in
770       any of the build output. @<:@disabled in release builds, otherwise enabled@:>@])])
771 
772   AC_MSG_CHECKING([if absolute paths should be allowed in the build output])
773   if test "x$enable_absolute_paths_in_output" = "xno"; then
774     AC_MSG_RESULT([no, forced])
775     ALLOW_ABSOLUTE_PATHS_IN_OUTPUT="false"
776   elif test "x$enable_absolute_paths_in_output" = "xyes"; then
777     AC_MSG_RESULT([yes, forced])
778     ALLOW_ABSOLUTE_PATHS_IN_OUTPUT="true"
779   elif test "x$DEBUG_LEVEL" = "xrelease"; then
780     AC_MSG_RESULT([no, release build])
781     ALLOW_ABSOLUTE_PATHS_IN_OUTPUT="false"
782   else
783     AC_MSG_RESULT([yes, debug build])
784     ALLOW_ABSOLUTE_PATHS_IN_OUTPUT="true"
785   fi
786 
787   AC_SUBST(ALLOW_ABSOLUTE_PATHS_IN_OUTPUT)
788 ])
789 
790 ################################################################################
791 #
792 # Check and set options related to reproducible builds.
793 #
794 AC_DEFUN_ONCE([JDKOPT_SETUP_REPRODUCIBLE_BUILD],
795 [
796   AC_ARG_WITH([source-date], [AS_HELP_STRING([--with-source-date],
797       [how to set SOURCE_DATE_EPOCH ('updated', 'current', 'version' a timestamp or an ISO-8601 date) @<:@current/value of SOURCE_DATE_EPOCH@:>@])],
798       [with_source_date_present=true], [with_source_date_present=false])
799 
800   if test "x$SOURCE_DATE_EPOCH" != x && test "x$with_source_date" != x; then
801     AC_MSG_WARN([--with-source-date will override SOURCE_DATE_EPOCH])
802   fi
803 
804   AC_MSG_CHECKING([what source date to use])
805 
806   if test "x$with_source_date" = xyes; then
807     AC_MSG_ERROR([--with-source-date must have a value])
808   elif test "x$with_source_date" = x; then
809     if test "x$SOURCE_DATE_EPOCH" != x; then
810       SOURCE_DATE=$SOURCE_DATE_EPOCH
811       with_source_date_present=true
812       AC_MSG_RESULT([$SOURCE_DATE, from SOURCE_DATE_EPOCH])
813     else
814       # Tell makefiles to take the time from configure
815       SOURCE_DATE=$($DATE +"%s")
816       AC_MSG_RESULT([$SOURCE_DATE, from 'current' (default)])
817     fi
818   elif test "x$with_source_date" = xupdated; then
819     SOURCE_DATE=updated
820     AC_MSG_RESULT([determined at build time, from 'updated'])
821   elif test "x$with_source_date" = xcurrent; then
822     # Set the current time
823     SOURCE_DATE=$($DATE +"%s")
824     AC_MSG_RESULT([$SOURCE_DATE, from 'current'])
825   elif test "x$with_source_date" = xversion; then
826     # Use the date from version-numbers.conf
827     UTIL_GET_EPOCH_TIMESTAMP(SOURCE_DATE, $DEFAULT_VERSION_DATE)
828     if test "x$SOURCE_DATE" = x; then
829       AC_MSG_RESULT([unavailable])
830       AC_MSG_ERROR([Cannot convert DEFAULT_VERSION_DATE to timestamp])
831     fi
832     AC_MSG_RESULT([$SOURCE_DATE, from 'version'])
833   else
834     # It's a timestamp, an ISO-8601 date, or an invalid string
835     # Additional [] needed to keep m4 from mangling shell constructs.
836     if [ [[ "$with_source_date" =~ ^[0-9][0-9]*$ ]] ] ; then
837       SOURCE_DATE=$with_source_date
838       AC_MSG_RESULT([$SOURCE_DATE, from timestamp on command line])
839     else
840       UTIL_GET_EPOCH_TIMESTAMP(SOURCE_DATE, $with_source_date)
841       if test "x$SOURCE_DATE" != x; then
842         AC_MSG_RESULT([$SOURCE_DATE, from ISO-8601 date on command line])
843       else
844         AC_MSG_RESULT([unavailable])
845         AC_MSG_ERROR([Cannot parse date string "$with_source_date"])
846       fi
847     fi
848   fi
849 
850   ISO_8601_FORMAT_STRING="%Y-%m-%dT%H:%M:%SZ"
851   if test "x$SOURCE_DATE" != xupdated; then
852     # If we have a fixed value for SOURCE_DATE, we need to set SOURCE_DATE_EPOCH
853     # for the rest of configure.
854     SOURCE_DATE_EPOCH="$SOURCE_DATE"
855     if test "x$IS_GNU_DATE" = xyes; then
856       SOURCE_DATE_ISO_8601=`$DATE --utc --date="@$SOURCE_DATE" +"$ISO_8601_FORMAT_STRING" 2> /dev/null`
857     else
858       SOURCE_DATE_ISO_8601=`$DATE -u -j -f "%s" "$SOURCE_DATE" +"$ISO_8601_FORMAT_STRING" 2> /dev/null`
859     fi
860   fi
861 
862   AC_SUBST(SOURCE_DATE)
863   AC_SUBST(ISO_8601_FORMAT_STRING)
864   AC_SUBST(SOURCE_DATE_ISO_8601)
865 
866   UTIL_DEPRECATED_ARG_ENABLE(reproducible-build)
867 ])
868 
869 ################################################################################
870 #
871 # Setup signing on macOS. This can either be setup to sign with a real identity
872 # and enabling the hardened runtime, or it can simply add the debug entitlement
873 # com.apple.security.get-task-allow without actually signing any binaries. The
874 # latter is needed to be able to debug processes and dump core files on modern
875 # versions of macOS. It can also be skipped completely.
876 #
877 # Check if codesign will run with the given parameters
878 # $1: Parameters to run with
879 # $2: Checking message
880 # Sets CODESIGN_SUCCESS=true/false
881 AC_DEFUN([JDKOPT_CHECK_CODESIGN_PARAMS],
882 [
883   PARAMS="$1"
884   MESSAGE="$2"
885   CODESIGN_TESTFILE="$CONFIGURESUPPORT_OUTPUTDIR/codesign-testfile"
886   $RM "$CODESIGN_TESTFILE"
887   $TOUCH "$CODESIGN_TESTFILE"
888   CODESIGN_SUCCESS=false
889 
890   $ECHO "check codesign, calling $CODESIGN $PARAMS $CODESIGN_TESTFILE" >&AS_MESSAGE_LOG_FD
891 
892   eval \"$CODESIGN\" $PARAMS \"$CODESIGN_TESTFILE\" 2>&AS_MESSAGE_LOG_FD \
893       >&AS_MESSAGE_LOG_FD && CODESIGN_SUCCESS=true
894   $RM "$CODESIGN_TESTFILE"
895   AC_MSG_CHECKING([$MESSAGE])
896   if test "x$CODESIGN_SUCCESS" = "xtrue"; then
897     AC_MSG_RESULT([yes])
898   else
899     AC_MSG_RESULT([no])
900   fi
901 ])
902 
903 AC_DEFUN([JDKOPT_CHECK_CODESIGN_HARDENED],
904 [
905   JDKOPT_CHECK_CODESIGN_PARAMS([-s \"$MACOSX_CODESIGN_IDENTITY\" --option runtime],
906       [if codesign with hardened runtime is possible])
907 ])
908 
909 AC_DEFUN([JDKOPT_CHECK_CODESIGN_DEBUG],
910 [
911   JDKOPT_CHECK_CODESIGN_PARAMS([-s -], [if debug mode codesign is possible])
912 ])
913 
914 AC_DEFUN([JDKOPT_SETUP_MACOSX_SIGNING],
915 [
916   MACOSX_CODESIGN_MODE=disabled
917   if test "x$OPENJDK_TARGET_OS" = "xmacosx" && test "x$CODESIGN" != "x"; then
918 
919     UTIL_ARG_WITH(NAME: macosx-codesign, TYPE: literal, OPTIONAL: true,
920         VALID_VALUES: [hardened debug auto], DEFAULT: auto,
921         ENABLED_DEFAULT: true,
922         CHECKING_MSG: [for macosx code signing mode],
923         DESC: [set the macosx code signing mode (hardened, debug, auto)]
924     )
925 
926     if test "x$MACOSX_CODESIGN_ENABLED" = "xtrue"; then
927 
928       # Check for user provided code signing identity.
929       UTIL_ARG_WITH(NAME: macosx-codesign-identity, TYPE: string,
930           DEFAULT: openjdk_codesign, CHECK_VALUE: [UTIL_CHECK_STRING_NON_EMPTY],
931           DESC: [specify the macosx code signing identity],
932           CHECKING_MSG: [for macosx code signing identity]
933       )
934       AC_SUBST(MACOSX_CODESIGN_IDENTITY)
935 
936       if test "x$MACOSX_CODESIGN" = "xauto"; then
937         # Only try to default to hardened signing on release builds
938         if test "x$DEBUG_LEVEL" = "xrelease"; then
939           JDKOPT_CHECK_CODESIGN_HARDENED
940           if test "x$CODESIGN_SUCCESS" = "xtrue"; then
941             MACOSX_CODESIGN_MODE=hardened
942           fi
943         fi
944         if test "x$MACOSX_CODESIGN_MODE" = "xdisabled"; then
945           JDKOPT_CHECK_CODESIGN_DEBUG
946           if test "x$CODESIGN_SUCCESS" = "xtrue"; then
947             MACOSX_CODESIGN_MODE=debug
948           fi
949         fi
950         AC_MSG_CHECKING([for macosx code signing mode])
951         AC_MSG_RESULT([$MACOSX_CODESIGN_MODE])
952       elif test "x$MACOSX_CODESIGN" = "xhardened"; then
953         JDKOPT_CHECK_CODESIGN_HARDENED
954         if test "x$CODESIGN_SUCCESS" = "xfalse"; then
955           AC_MSG_ERROR([Signing with hardened runtime is not possible])
956         fi
957         MACOSX_CODESIGN_MODE=hardened
958       elif test "x$MACOSX_CODESIGN" = "xdebug"; then
959         JDKOPT_CHECK_CODESIGN_DEBUG
960         if test "x$CODESIGN_SUCCESS" = "xfalse"; then
961           AC_MSG_ERROR([Signing in debug mode is not possible])
962         fi
963         MACOSX_CODESIGN_MODE=debug
964       else
965         AC_MSG_ERROR([unknown value for --with-macosx-codesign: $MACOSX_CODESIGN])
966       fi
967     fi
968   fi
969   AC_SUBST(MACOSX_CODESIGN_IDENTITY)
970   AC_SUBST(MACOSX_CODESIGN_MODE)
971 ])
972 
973 ################################################################################
974 #
975 # fallback linker
976 #
977 AC_DEFUN_ONCE([JDKOPT_SETUP_FALLBACK_LINKER],
978 [
979   FALLBACK_LINKER_DEFAULT=false
980 
981   if HOTSPOT_CHECK_JVM_VARIANT(zero); then
982     FALLBACK_LINKER_DEFAULT=true
983   fi
984 
985   UTIL_ARG_ENABLE(NAME: fallback-linker, DEFAULT: $FALLBACK_LINKER_DEFAULT,
986       RESULT: ENABLE_FALLBACK_LINKER,
987       DESC: [enable libffi-based fallback implementation of java.lang.foreign.Linker],
988       CHECKING_MSG: [if fallback linker enabled])
989   AC_SUBST(ENABLE_FALLBACK_LINKER)
990 ])