1 #
2 # Copyright (c) 2011, 2019, 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 #
28 # Setup flags for C/C++ compiler
29 #
30
31 ###############################################################################
32 #
33 # How to compile shared libraries.
34 #
35 AC_DEFUN([FLAGS_SETUP_SHARED_LIBS],
36 [
37 if test "x$TOOLCHAIN_TYPE" = xgcc; then
38 C_FLAG_REORDER=''
39
40 # Default works for linux, might work on other platforms as well.
41 SHARED_LIBRARY_FLAGS='-shared'
42 SET_EXECUTABLE_ORIGIN='-Wl,-rpath,\$$ORIGIN[$]1'
43 SET_SHARED_LIBRARY_ORIGIN="-Wl,-z,origin $SET_EXECUTABLE_ORIGIN"
44 SET_SHARED_LIBRARY_NAME='-Wl,-soname=[$]1'
45 SET_SHARED_LIBRARY_MAPFILE='-Wl,-version-script=[$]1'
46
47 elif test "x$TOOLCHAIN_TYPE" = xclang; then
48 C_FLAG_REORDER=''
49
50 if test "x$OPENJDK_TARGET_OS" = xmacosx; then
51 # Linking is different on MacOSX
52 SHARED_LIBRARY_FLAGS="-dynamiclib -compatibility_version 1.0.0 -current_version 1.0.0"
53 SET_EXECUTABLE_ORIGIN='-Wl,-rpath,@loader_path$(or [$]1,/.)'
54 SET_SHARED_LIBRARY_ORIGIN="$SET_EXECUTABLE_ORIGIN"
55 SET_SHARED_LIBRARY_NAME='-Wl,-install_name,@rpath/[$]1'
56 SET_SHARED_LIBRARY_MAPFILE='-Wl,-exported_symbols_list,[$]1'
57
58 else
59 # Default works for linux, might work on other platforms as well.
60 SHARED_LIBRARY_FLAGS='-shared'
61 SET_EXECUTABLE_ORIGIN='-Wl,-rpath,\$$ORIGIN[$]1'
62 SET_SHARED_LIBRARY_NAME='-Wl,-soname=[$]1'
63 SET_SHARED_LIBRARY_MAPFILE='-Wl,-version-script=[$]1'
64
65 # arm specific settings
66 if test "x$OPENJDK_TARGET_CPU" = "xarm"; then
67 # '-Wl,-z,origin' isn't used on arm.
68 SET_SHARED_LIBRARY_ORIGIN='-Wl,-rpath,\$$$$ORIGIN[$]1'
69 else
70 SET_SHARED_LIBRARY_ORIGIN="-Wl,-z,origin $SET_EXECUTABLE_ORIGIN"
71 fi
72 fi
73
74 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
75 C_FLAG_REORDER='-xF'
76 SHARED_LIBRARY_FLAGS="-G"
77 SET_EXECUTABLE_ORIGIN='-R\$$ORIGIN[$]1'
78 SET_SHARED_LIBRARY_ORIGIN="$SET_EXECUTABLE_ORIGIN"
79 SET_SHARED_LIBRARY_NAME='-h [$]1'
80 SET_SHARED_LIBRARY_MAPFILE='-M[$]1'
81
82 elif test "x$TOOLCHAIN_TYPE" = xxlc; then
83 C_FLAG_REORDER=''
84 SHARED_LIBRARY_FLAGS="-qmkshrobj -bM:SRE -bnoentry"
85 SET_EXECUTABLE_ORIGIN=""
86 SET_SHARED_LIBRARY_ORIGIN=''
87 SET_SHARED_LIBRARY_NAME=''
88 SET_SHARED_LIBRARY_MAPFILE=''
89
90 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
91 C_FLAG_REORDER=''
92 SHARED_LIBRARY_FLAGS="-dll"
93 SET_EXECUTABLE_ORIGIN=''
94 SET_SHARED_LIBRARY_ORIGIN=''
95 SET_SHARED_LIBRARY_NAME=''
96 SET_SHARED_LIBRARY_MAPFILE='-def:[$]1'
97 fi
98
99 AC_SUBST(C_FLAG_REORDER)
100 AC_SUBST(SET_EXECUTABLE_ORIGIN)
101 AC_SUBST(SET_SHARED_LIBRARY_ORIGIN)
102 AC_SUBST(SET_SHARED_LIBRARY_NAME)
103 AC_SUBST(SET_SHARED_LIBRARY_MAPFILE)
104 AC_SUBST(SHARED_LIBRARY_FLAGS)
105 ])
106
107 AC_DEFUN([FLAGS_SETUP_DEBUG_SYMBOLS],
108 [
109 # By default don't set any specific assembler debug
110 # info flags for toolchains unless we know they work.
111 # See JDK-8207057.
112 ASFLAGS_DEBUG_SYMBOLS=""
113 # Debug symbols
114 if test "x$TOOLCHAIN_TYPE" = xgcc; then
115 CFLAGS_DEBUG_SYMBOLS="-g"
116 ASFLAGS_DEBUG_SYMBOLS="-g"
117 elif test "x$TOOLCHAIN_TYPE" = xclang; then
118 CFLAGS_DEBUG_SYMBOLS="-g"
119 ASFLAGS_DEBUG_SYMBOLS="-g"
120 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
121 # -g0 enables debug symbols without disabling inlining.
122 CFLAGS_DEBUG_SYMBOLS="-g0 -xs"
123 elif test "x$TOOLCHAIN_TYPE" = xxlc; then
124 CFLAGS_DEBUG_SYMBOLS="-g1"
125 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
126 CFLAGS_DEBUG_SYMBOLS="-Z7 -d2Zi+"
127 fi
128
129 AC_SUBST(CFLAGS_DEBUG_SYMBOLS)
130 AC_SUBST(ASFLAGS_DEBUG_SYMBOLS)
131 ])
132
133 AC_DEFUN([FLAGS_SETUP_WARNINGS],
134 [
135 AC_ARG_ENABLE([warnings-as-errors], [AS_HELP_STRING([--disable-warnings-as-errors],
136 [do not consider native warnings to be an error @<:@enabled@:>@])])
137
138 # Set default value.
139 if test "x$TOOLCHAIN_TYPE" = xxlc; then
140 WARNINGS_AS_ERRORS=false
141 else
142 WARNINGS_AS_ERRORS=true
143 fi
144
145 AC_MSG_CHECKING([if native warnings are errors])
146 if test "x$enable_warnings_as_errors" = "xyes"; then
147 AC_MSG_RESULT([yes (explicitly set)])
148 WARNINGS_AS_ERRORS=true
149 elif test "x$enable_warnings_as_errors" = "xno"; then
150 AC_MSG_RESULT([no (explicitly set)])
151 WARNINGS_AS_ERRORS=false
152 elif test "x$enable_warnings_as_errors" = "x"; then
153 AC_MSG_RESULT([${WARNINGS_AS_ERRORS} (default)])
154 else
155 AC_MSG_ERROR([--enable-warnings-as-errors accepts no argument])
156 fi
157
158 AC_SUBST(WARNINGS_AS_ERRORS)
159
160 case "${TOOLCHAIN_TYPE}" in
161 microsoft)
162 DISABLE_WARNING_PREFIX="-wd"
163 CFLAGS_WARNINGS_ARE_ERRORS="-WX"
164
165 WARNINGS_ENABLE_ALL="-W3"
166 DISABLED_WARNINGS="4800"
167 ;;
168
169 solstudio)
170 DISABLE_WARNING_PREFIX="-erroff="
171 CFLAGS_WARNINGS_ARE_ERRORS="-errwarn=%all"
172
173 WARNINGS_ENABLE_ALL_CFLAGS="-v"
174 WARNINGS_ENABLE_ALL_CXXFLAGS="+w"
175
176 DISABLED_WARNINGS_C=""
177 DISABLED_WARNINGS_CXX=""
178 ;;
179
180 gcc)
181 DISABLE_WARNING_PREFIX="-Wno-"
182 CFLAGS_WARNINGS_ARE_ERRORS="-Werror"
183
184 # Additional warnings that are not activated by -Wall and -Wextra
185 WARNINGS_ENABLE_ADDITIONAL="-Wpointer-arith -Wsign-compare \
186 -Wunused-function -Wundef -Wunused-value -Wreturn-type \
187 -Wtrampolines"
188 WARNINGS_ENABLE_ADDITIONAL_CXX="-Woverloaded-virtual -Wreorder"
189 WARNINGS_ENABLE_ALL_CFLAGS="-Wall -Wextra -Wformat=2 $WARNINGS_ENABLE_ADDITIONAL"
190 WARNINGS_ENABLE_ALL_CXXFLAGS="$WARNINGS_ENABLE_ALL_CFLAGS $WARNINGS_ENABLE_ADDITIONAL_CXX"
191
192 DISABLED_WARNINGS="unused-parameter unused"
193 GCC_MAJOR_VERSION=`$ECHO $CC_VERSION_NUMBER | $CUT -d'.' -f 1`
194 if test $GCC_MAJOR_VERSION -ge 8; then
195 DISABLED_WARNINGS="$DISABLED_WARNINGS stringop-truncation"
196 fi
197
198 # Repeate the check for the BUILD_CC and BUILD_CXX. Need to also reset
199 # CFLAGS since any target specific flags will likely not work with the
200 # build compiler
201 CC_OLD="$CC"
202 CXX_OLD="$CXX"
203 CC="$BUILD_CC"
204 CXX="$BUILD_CXX"
205 CFLAGS_OLD="$CFLAGS"
206 CFLAGS=""
207 BUILD_CC_DISABLE_WARNING_PREFIX="-Wno-"
208 CC="$CC_OLD"
209 CXX="$CXX_OLD"
210 CFLAGS="$CFLAGS_OLD"
211 ;;
212
213 clang)
214 DISABLE_WARNING_PREFIX="-Wno-"
215 CFLAGS_WARNINGS_ARE_ERRORS="-Werror"
216
217 # Additional warnings that are not activated by -Wall and -Wextra
218 WARNINGS_ENABLE_ADDITIONAL="-Wpointer-arith -Wsign-compare -Wreorder \
219 -Wunused-function -Wundef -Wunused-value -Woverloaded-virtual"
220 WARNINGS_ENABLE_ALL="-Wall -Wextra -Wformat=2 $WARNINGS_ENABLE_ADDITIONAL"
221
222 DISABLED_WARNINGS="unknown-warning-option unused-parameter unused"
223
224 if test "x$OPENJDK_TARGET_OS" = xmacosx; then
225 # missing-method-return-type triggers in JavaNativeFoundation framework
226 DISABLED_WARNINGS="$DISABLED_WARNINGS missing-method-return-type"
227 fi
228
229 ;;
230
231 xlc)
232 DISABLE_WARNING_PREFIX="-Wno-"
233 CFLAGS_WARNINGS_ARE_ERRORS="-qhalt=w"
234
235 # Possibly a better subset than "all" is "lan:trx:ret:zea:cmp:ret"
236 WARNINGS_ENABLE_ALL="-qinfo=all -qformat=all"
237 DISABLED_WARNINGS=""
238 ;;
239 esac
240 AC_SUBST(DISABLE_WARNING_PREFIX)
241 AC_SUBST(BUILD_CC_DISABLE_WARNING_PREFIX)
242 AC_SUBST(CFLAGS_WARNINGS_ARE_ERRORS)
243 AC_SUBST(DISABLED_WARNINGS)
244 AC_SUBST(DISABLED_WARNINGS_C)
245 AC_SUBST(DISABLED_WARNINGS_CXX)
246 ])
247
248 AC_DEFUN([FLAGS_SETUP_QUALITY_CHECKS],
249 [
250 # bounds, memory and behavior checking options
251 if test "x$TOOLCHAIN_TYPE" = xgcc; then
252 case $DEBUG_LEVEL in
253 release )
254 # no adjustment
255 ;;
256 fastdebug )
257 # no adjustment
258 ;;
259 slowdebug )
260 # FIXME: By adding this to C(XX)FLAGS_DEBUG_OPTIONS/JVM_CFLAGS_SYMBOLS it
261 # get's added conditionally on whether we produce debug symbols or not.
262 # This is most likely not really correct.
263
264 # Add runtime stack smashing and undefined behavior checks.
265 CFLAGS_DEBUG_OPTIONS="-fstack-protector-all --param ssp-buffer-size=1"
266 CXXFLAGS_DEBUG_OPTIONS="-fstack-protector-all --param ssp-buffer-size=1"
267
268 JVM_CFLAGS_SYMBOLS="$JVM_CFLAGS_SYMBOLS -fstack-protector-all --param ssp-buffer-size=1"
269 ;;
270 esac
271 fi
272 ])
273
274 AC_DEFUN([FLAGS_SETUP_OPTIMIZATION],
275 [
276 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
277 CC_HIGHEST="-fns -fsimple -fsingle -xbuiltin=%all -xdepend -xrestrict -xlibmil"
278
279 C_O_FLAG_HIGHEST_JVM="-xO4"
280 C_O_FLAG_DEBUG_JVM=""
281 C_O_FLAG_SIZE=""
282 C_O_FLAG_DEBUG=""
283 C_O_FLAG_NONE=""
284 if test "x$OPENJDK_TARGET_CPU_ARCH" = "xx86"; then
285 C_O_FLAG_HIGHEST="-xO4 -Wu,-O4~yz $CC_HIGHEST"
286 C_O_FLAG_HI="-xO4 -Wu,-O4~yz"
287 C_O_FLAG_NORM="-xO2 -Wu,-O2~yz"
288 elif test "x$OPENJDK_TARGET_CPU_ARCH" = "xsparc"; then
289 C_O_FLAG_HIGHEST="-xO4 -Wc,-Qrm-s -Wc,-Qiselect-T0 \
290 -xprefetch=auto,explicit $CC_HIGHEST"
291 C_O_FLAG_HI="-xO4 -Wc,-Qrm-s -Wc,-Qiselect-T0"
292 C_O_FLAG_NORM="-xO2 -Wc,-Qrm-s -Wc,-Qiselect-T0"
293 fi
294 elif test "x$TOOLCHAIN_TYPE" = xgcc; then
295 C_O_FLAG_HIGHEST_JVM="-O3"
296 C_O_FLAG_HIGHEST="-O3"
297 C_O_FLAG_HI="-O3"
298 C_O_FLAG_NORM="-O2"
299 C_O_FLAG_SIZE="-Os"
300 C_O_FLAG_DEBUG="-O0"
301 C_O_FLAG_DEBUG_JVM="-O0"
302 C_O_FLAG_NONE="-O0"
303 # -D_FORTIFY_SOURCE=2 hardening option needs optimization (at least -O1) enabled
304 # set for lower O-levels -U_FORTIFY_SOURCE to overwrite previous settings
305 if test "x$OPENJDK_TARGET_OS" = xlinux -a "x$DEBUG_LEVEL" = "xfastdebug"; then
306 ENABLE_FORTIFY_CFLAGS="-D_FORTIFY_SOURCE=2"
307 DISABLE_FORTIFY_CFLAGS="-U_FORTIFY_SOURCE"
308 C_O_FLAG_HIGHEST_JVM="${C_O_FLAG_HIGHEST_JVM} ${ENABLE_FORTIFY_CFLAGS}"
309 C_O_FLAG_HIGHEST="${C_O_FLAG_HIGHEST} ${ENABLE_FORTIFY_CFLAGS}"
310 C_O_FLAG_HI="${C_O_FLAG_HI} ${ENABLE_FORTIFY_CFLAGS}"
311 C_O_FLAG_NORM="${C_O_FLAG_NORM} ${ENABLE_FORTIFY_CFLAGS}"
312 C_O_FLAG_SIZE="${C_O_FLAG_SIZE} ${DISABLE_FORTIFY_CFLAGS}"
313 C_O_FLAG_DEBUG="${C_O_FLAG_DEBUG} ${DISABLE_FORTIFY_CFLAGS}"
314 C_O_FLAG_DEBUG_JVM="${C_O_FLAG_DEBUG_JVM} ${DISABLE_FORTIFY_CFLAGS}"
315 C_O_FLAG_NONE="${C_O_FLAG_NONE} ${DISABLE_FORTIFY_CFLAGS}"
316 fi
317 elif test "x$TOOLCHAIN_TYPE" = xclang; then
318 if test "x$OPENJDK_TARGET_OS" = xmacosx; then
319 # On MacOSX we optimize for size, something
320 # we should do for all platforms?
321 C_O_FLAG_HIGHEST_JVM="-Os"
322 C_O_FLAG_HIGHEST="-Os"
323 C_O_FLAG_HI="-Os"
324 C_O_FLAG_NORM="-Os"
325 C_O_FLAG_DEBUG_JVM=""
326 else
327 C_O_FLAG_HIGHEST_JVM="-O3"
328 C_O_FLAG_HIGHEST="-O3"
329 C_O_FLAG_HI="-O3"
330 C_O_FLAG_NORM="-O2"
331 C_O_FLAG_DEBUG_JVM="-O0"
332 fi
333 C_O_FLAG_SIZE="-Os"
334 C_O_FLAG_DEBUG="-O0"
335 C_O_FLAG_NONE="-O0"
336 elif test "x$TOOLCHAIN_TYPE" = xxlc; then
337 C_O_FLAG_HIGHEST_JVM="-O3 -qhot=level=1 -qinline -qinlglue"
338 C_O_FLAG_HIGHEST="-O3 -qhot=level=1 -qinline -qinlglue"
339 C_O_FLAG_HI="-O3 -qinline -qinlglue"
340 C_O_FLAG_NORM="-O2"
341 C_O_FLAG_DEBUG="-qnoopt"
342 # FIXME: Value below not verified.
343 C_O_FLAG_DEBUG_JVM=""
344 C_O_FLAG_NONE="-qnoopt"
345 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
346 C_O_FLAG_HIGHEST_JVM="-O2 -Oy-"
347 C_O_FLAG_HIGHEST="-O2"
348 C_O_FLAG_HI="-O1"
349 C_O_FLAG_NORM="-O1"
350 C_O_FLAG_DEBUG="-Od"
351 C_O_FLAG_DEBUG_JVM=""
352 C_O_FLAG_NONE="-Od"
353 C_O_FLAG_SIZE="-Os"
354 fi
355
356 # Now copy to C++ flags
357 CXX_O_FLAG_HIGHEST_JVM="$C_O_FLAG_HIGHEST_JVM"
358 CXX_O_FLAG_HIGHEST="$C_O_FLAG_HIGHEST"
359 CXX_O_FLAG_HI="$C_O_FLAG_HI"
360 CXX_O_FLAG_NORM="$C_O_FLAG_NORM"
361 CXX_O_FLAG_DEBUG="$C_O_FLAG_DEBUG"
362 CXX_O_FLAG_DEBUG_JVM="$C_O_FLAG_DEBUG_JVM"
363 CXX_O_FLAG_NONE="$C_O_FLAG_NONE"
364 CXX_O_FLAG_SIZE="$C_O_FLAG_SIZE"
365
366 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
367 # In solstudio, also add this to C (but not C++) flags...
368 C_O_FLAG_HIGHEST="$C_O_FLAG_HIGHEST -xalias_level=basic"
369 fi
370
371 # Adjust optimization flags according to debug level.
372 case $DEBUG_LEVEL in
373 release )
374 # no adjustment
375 ;;
376 fastdebug )
377 # Not quite so much optimization
378 C_O_FLAG_HI="$C_O_FLAG_NORM"
379 CXX_O_FLAG_HI="$CXX_O_FLAG_NORM"
380 ;;
381 slowdebug )
382 # Disable optimization
383 C_O_FLAG_HIGHEST_JVM="$C_O_FLAG_DEBUG_JVM"
384 C_O_FLAG_HIGHEST="$C_O_FLAG_DEBUG"
385 C_O_FLAG_HI="$C_O_FLAG_DEBUG"
386 C_O_FLAG_NORM="$C_O_FLAG_DEBUG"
387 C_O_FLAG_SIZE="$C_O_FLAG_DEBUG"
388 CXX_O_FLAG_HIGHEST_JVM="$CXX_O_FLAG_DEBUG_JVM"
389 CXX_O_FLAG_HIGHEST="$CXX_O_FLAG_DEBUG"
390 CXX_O_FLAG_HI="$CXX_O_FLAG_DEBUG"
391 CXX_O_FLAG_NORM="$CXX_O_FLAG_DEBUG"
392 CXX_O_FLAG_SIZE="$CXX_O_FLAG_DEBUG"
393 ;;
394 esac
395
396 AC_SUBST(C_O_FLAG_HIGHEST_JVM)
397 AC_SUBST(C_O_FLAG_HIGHEST)
398 AC_SUBST(C_O_FLAG_HI)
399 AC_SUBST(C_O_FLAG_NORM)
400 AC_SUBST(C_O_FLAG_NONE)
401 AC_SUBST(C_O_FLAG_SIZE)
402 AC_SUBST(CXX_O_FLAG_HIGHEST_JVM)
403 AC_SUBST(CXX_O_FLAG_HIGHEST)
404 AC_SUBST(CXX_O_FLAG_HI)
405 AC_SUBST(CXX_O_FLAG_NORM)
406 AC_SUBST(CXX_O_FLAG_NONE)
407 AC_SUBST(CXX_O_FLAG_SIZE)
408 ])
409
410 AC_DEFUN([FLAGS_SETUP_CFLAGS],
411 [
412 ### CFLAGS
413
414 FLAGS_SETUP_CFLAGS_HELPER
415
416 FLAGS_OS=$OPENJDK_TARGET_OS
417 FLAGS_OS_TYPE=$OPENJDK_TARGET_OS_TYPE
418 FLAGS_CPU=$OPENJDK_TARGET_CPU
419 FLAGS_CPU_ARCH=$OPENJDK_TARGET_CPU_ARCH
420 FLAGS_CPU_BITS=$OPENJDK_TARGET_CPU_BITS
421 FLAGS_CPU_ENDIAN=$OPENJDK_TARGET_CPU_ENDIAN
422 FLAGS_CPU_LEGACY=$OPENJDK_TARGET_CPU_LEGACY
423 FLAGS_CPU_LEGACY_LIB=$OPENJDK_TARGET_CPU_LEGACY_LIB
424
425 FLAGS_SETUP_CFLAGS_CPU_DEP([TARGET])
426
427 FLAGS_OS=$OPENJDK_BUILD_OS
428 FLAGS_OS_TYPE=$OPENJDK_BUILD_OS_TYPE
429 FLAGS_CPU=$OPENJDK_BUILD_CPU
430 FLAGS_CPU_ARCH=$OPENJDK_BUILD_CPU_ARCH
431 FLAGS_CPU_BITS=$OPENJDK_BUILD_CPU_BITS
432 FLAGS_CPU_ENDIAN=$OPENJDK_BUILD_CPU_ENDIAN
433 FLAGS_CPU_LEGACY=$OPENJDK_BUILD_CPU_LEGACY
434 FLAGS_CPU_LEGACY_LIB=$OPENJDK_BUILD_CPU_LEGACY_LIB
435
436 FLAGS_SETUP_CFLAGS_CPU_DEP([BUILD], [OPENJDK_BUILD_], [BUILD_])
437 ])
438
439 ################################################################################
440 # platform independent
441 AC_DEFUN([FLAGS_SETUP_CFLAGS_HELPER],
442 [
443 #### OS DEFINES, these should be independent on toolchain
444 if test "x$OPENJDK_TARGET_OS" = xlinux; then
445 CFLAGS_OS_DEF_JVM="-DLINUX"
446 CFLAGS_OS_DEF_JDK="-D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE"
447 elif test "x$OPENJDK_TARGET_OS" = xsolaris; then
448 CFLAGS_OS_DEF_JVM="-DSOLARIS"
449 CFLAGS_OS_DEF_JDK="-D__solaris__"
450 elif test "x$OPENJDK_TARGET_OS" = xmacosx; then
451 CFLAGS_OS_DEF_JVM="-D_ALLBSD_SOURCE -D_DARWIN_C_SOURCE -D_XOPEN_SOURCE"
452 CFLAGS_OS_DEF_JDK="-D_ALLBSD_SOURCE -D_DARWIN_UNLIMITED_SELECT"
453 elif test "x$OPENJDK_TARGET_OS" = xaix; then
454 CFLAGS_OS_DEF_JVM="-DAIX"
455 elif test "x$OPENJDK_TARGET_OS" = xbsd; then
456 CFLAGS_OS_DEF_JDK="-D_ALLBSD_SOURCE"
457 elif test "x$OPENJDK_TARGET_OS" = xwindows; then
458 CFLAGS_OS_DEF_JVM="-D_WINDOWS -DWIN32 -D_JNI_IMPLEMENTATION_"
459 fi
460
461 CFLAGS_OS_DEF_JDK="$CFLAGS_OS_DEF_JDK -D$OPENJDK_TARGET_OS_UPPERCASE"
462
463 #### GLOBAL DEFINES
464 # Set some common defines. These works for all compilers, but assume
465 # -D is universally accepted.
466
467 # Always enable optional macros for VM.
468 ALWAYS_CFLAGS_JVM="-D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS"
469
470 # Setup some hard coded includes
471 ALWAYS_CFLAGS_JDK=" \
472 -I\$(SUPPORT_OUTPUTDIR)/modules_include/java.base \
473 -I\$(SUPPORT_OUTPUTDIR)/modules_include/java.base/\$(OPENJDK_TARGET_OS_INCLUDE_SUBDIR) \
474 -I${TOPDIR}/src/java.base/share/native/libjava \
475 -I${TOPDIR}/src/java.base/$OPENJDK_TARGET_OS_TYPE/native/libjava \
476 -I${TOPDIR}/src/hotspot/share/include \
477 -I${TOPDIR}/src/hotspot/os/${HOTSPOT_TARGET_OS_TYPE}/include"
478
479 ###############################################################################
480
481 # Adjust flags according to debug level.
482 # Setup debug/release defines
483 if test "x$DEBUG_LEVEL" = xrelease; then
484 DEBUG_CFLAGS_JDK="-DNDEBUG"
485 if test "x$OPENJDK_TARGET_OS" = xsolaris; then
486 DEBUG_CFLAGS_JDK="$DEBUG_CFLAGS_JDK -DTRIMMED"
487 fi
488 else
489 DEBUG_CFLAGS_JDK="-DDEBUG"
490
491 if test "x$TOOLCHAIN_TYPE" = xxlc; then
492 # We need '-qminimaltoc' or '-qpic=large -bbigtoc' if the TOC overflows.
493 # Hotspot now overflows its 64K TOC (currently only for debug),
494 # so for debug we build with '-qpic=large -bbigtoc'.
495 DEBUG_CFLAGS_JVM="-qpic=large"
496 fi
497 fi
498
499 if test "x$DEBUG_LEVEL" != xrelease; then
500 DEBUG_OPTIONS_FLAGS_JDK="$CFLAGS_DEBUG_OPTIONS"
501 DEBUG_SYMBOLS_CFLAGS_JDK="$CFLAGS_DEBUG_SYMBOLS"
502 fi
503
504 #### TOOLCHAIN DEFINES
505
506 if test "x$TOOLCHAIN_TYPE" = xgcc; then
507 ALWAYS_DEFINES_JVM="-D_GNU_SOURCE -D_REENTRANT"
508 elif test "x$TOOLCHAIN_TYPE" = xclang; then
509 ALWAYS_DEFINES_JVM="-D_GNU_SOURCE"
510 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
511 ALWAYS_DEFINES_JVM="-DSPARC_WORKS -D_Crun_inline_placement"
512 ALWAYS_DEFINES_JDK="-DTRACING -DMACRO_MEMSYS_OPS -DBREAKPTS"
513 ALWAYS_DEFINES_JDK_CXXONLY="-DCC_NOEX"
514 elif test "x$TOOLCHAIN_TYPE" = xxlc; then
515 ALWAYS_DEFINES_JVM="-D_REENTRANT"
516 ALWAYS_DEFINES_JDK="-D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE -DSTDC"
517 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
518 ALWAYS_DEFINES_JDK="-DWIN32_LEAN_AND_MEAN -D_CRT_SECURE_NO_DEPRECATE \
519 -D_CRT_NONSTDC_NO_DEPRECATE -DWIN32 -DIAL"
520 ALWAYS_DEFINES_JVM="-DNOMINMAX -DWIN32_LEAN_AND_MEAN"
521 fi
522
523 ###############################################################################
524 #
525 #
526 # CFLAGS BASIC
527 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then
528 # COMMON to gcc and clang
529 TOOLCHAIN_CFLAGS_JVM="-pipe -fno-rtti -fno-exceptions \
530 -fvisibility=hidden -fno-strict-aliasing -fno-omit-frame-pointer"
531 fi
532
533 if test "x$TOOLCHAIN_TYPE" = xgcc; then
534 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -fcheck-new -fstack-protector"
535 TOOLCHAIN_CFLAGS_JDK="-pipe -fstack-protector"
536 # technically NOT for CXX (but since this gives *worse* performance, use
537 # no-strict-aliasing everywhere!)
538 TOOLCHAIN_CFLAGS_JDK_CONLY="-fno-strict-aliasing"
539
540 elif test "x$TOOLCHAIN_TYPE" = xclang; then
541 # Restrict the debug information created by Clang to avoid
542 # too big object files and speed the build up a little bit
543 # (see http://llvm.org/bugs/show_bug.cgi?id=7554)
544 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -flimit-debug-info"
545
546 # In principle the stack alignment below is cpu- and ABI-dependent and
547 # should agree with values of StackAlignmentInBytes in various
548 # src/hotspot/cpu/*/globalDefinitions_*.hpp files, but this value currently
549 # works for all platforms.
550 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -mno-omit-leaf-frame-pointer -mstack-alignment=16"
551
552 if test "x$OPENJDK_TARGET_OS" = xlinux; then
553 if test "x$DEBUG_LEVEL" = xrelease; then
554 # Clang does not inline as much as GCC does for functions with "inline" keyword by default.
555 # This causes noticeable slowdown in pause time for G1, and possibly in other areas.
556 # Increasing the inline hint threshold avoids the slowdown for Clang-built JVM.
557 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -mllvm -inlinehint-threshold=100000"
558 fi
559 TOOLCHAIN_CFLAGS_JDK="-pipe"
560 TOOLCHAIN_CFLAGS_JDK_CONLY="-fno-strict-aliasing" # technically NOT for CXX
561 fi
562 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
563 TOOLCHAIN_FLAGS="-errtags -errfmt"
564 TOOLCHAIN_CFLAGS="-errshort=tags"
565
566 TOOLCHAIN_CFLAGS_JDK="-mt $TOOLCHAIN_FLAGS"
567 TOOLCHAIN_CFLAGS_JDK_CONLY="-W0,-noglobal $TOOLCHAIN_CFLAGS" # C only
568 TOOLCHAIN_CFLAGS_JDK_CXXONLY="-features=no%except -norunpath -xnolib" # CXX only
569 TOOLCHAIN_CFLAGS_JVM="-template=no%extdef -features=no%split_init \
570 -library=stlport4 -mt -features=no%except $TOOLCHAIN_FLAGS"
571 if test "x$DEBUG_LEVEL" = xslowdebug; then
572 # Previously -g was used instead of -g0 for slowdebug; this is equivalent
573 # to setting +d.
574 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM +d"
575 fi
576
577 elif test "x$TOOLCHAIN_TYPE" = xxlc; then
578 # Suggested additions: -qsrcmsg to get improved error reporting
579 # set -qtbtable=full for a better traceback table/better stacks in hs_err when xlc16 is used
580 TOOLCHAIN_CFLAGS_JDK="-qtbtable=full -qchars=signed -qfullpath -qsaveopt -qstackprotect" # add on both CFLAGS
581 TOOLCHAIN_CFLAGS_JVM="-qtbtable=full -qtune=balanced \
582 -qalias=noansi -qstrict -qtls=default -qnortti -qnoeh -qignerrno -qstackprotect"
583 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
584 TOOLCHAIN_CFLAGS_JVM="-nologo -MD -MP"
585 TOOLCHAIN_CFLAGS_JDK="-nologo -MD -Zc:wchar_t-"
586 fi
587
588 # CFLAGS C language level for JDK sources (hotspot only uses C++)
589 # Ideally we would have a common level across all toolchains so that all sources
590 # are sure to conform to the same standard. Unfortunately neither our sources nor
591 # our toolchains are in a condition to support that. But what we loosely aim for is
592 # C99 level.
593 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang || test "x$TOOLCHAIN_TYPE" = xxlc; then
594 # This raises the language level for older 4.8 gcc, while lowering it for later
595 # versions. clang and xlclang support the same flag.
596 LANGSTD_CFLAGS="-std=c99"
597 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
598 # We can't turn on -std=c99 without breaking compilation of the splashscreen/png
599 # utilities. But we can enable c99 as below (previously achieved by using -Xa).
600 # It is the no_lib that makes the difference.
601 LANGSTD_CFLAGS="-xc99=all,no_lib"
602 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
603 # MSVC doesn't support C99/C11 explicitly, unless you compile as C++:
604 # LANGSTD_CFLAGS="/TP"
605 # but that requires numerous changes to the sources files. So we are limited
606 # to C89/C90 plus whatever extensions Visual Studio has decided to implement.
607 # This is the lowest bar for shared code.
608 LANGSTD_CFLAGS=""
609 fi
610 TOOLCHAIN_CFLAGS_JDK_CONLY="$LANGSTD_CFLAGS $TOOLCHAIN_CFLAGS_JDK_CONLY"
611
612 # CFLAGS WARNINGS STUFF
613 # Set JVM_CFLAGS warning handling
614 if test "x$TOOLCHAIN_TYPE" = xgcc; then
615 WARNING_CFLAGS_JDK_CONLY="$WARNINGS_ENABLE_ALL_CFLAGS"
616 WARNING_CFLAGS_JDK_CXXONLY="$WARNINGS_ENABLE_ALL_CXXFLAGS"
617 WARNING_CFLAGS_JVM="$WARNINGS_ENABLE_ALL_CXXFLAGS"
618
619 elif test "x$TOOLCHAIN_TYPE" = xclang; then
620 WARNING_CFLAGS="$WARNINGS_ENABLE_ALL"
621
622 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
623 WARNING_CFLAGS_JDK_CONLY="$WARNINGS_ENABLE_ALL_CFLAGS"
624 WARNING_CFLAGS_JDK_CXXONLY="$WARNINGS_ENABLE_ALL_CXXFLAGS"
625 WARNING_CFLAGS_JVM="$WARNINGS_ENABLE_ALL_CXXFLAGS"
626
627 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
628 WARNING_CFLAGS="$WARNINGS_ENABLE_ALL"
629
630 elif test "x$TOOLCHAIN_TYPE" = xxlc; then
631 WARNING_CFLAGS="" # currently left empty
632 fi
633
634 # Set some additional per-OS defines.
635
636 # Additional macosx handling
637 if test "x$OPENJDK_TARGET_OS" = xmacosx; then
638 OS_CFLAGS="-DMAC_OS_X_VERSION_MIN_REQUIRED=$MACOSX_VERSION_MIN_NODOTS \
639 -mmacosx-version-min=$MACOSX_VERSION_MIN"
640
641 if test -n "$MACOSX_VERSION_MAX"; then
642 OS_CFLAGS="$OS_CFLAGS \
643 -DMAC_OS_X_VERSION_MAX_ALLOWED=$MACOSX_VERSION_MAX_NODOTS"
644 fi
645 fi
646
647 # Where does this really belong??
648 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then
649 PICFLAG="-fPIC"
650 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
651 PICFLAG="-KPIC"
652 elif test "x$TOOLCHAIN_TYPE" = xxlc; then
653 # '-qpic' defaults to 'qpic=small'. This means that the compiler generates only
654 # one instruction for accessing the TOC. If the TOC grows larger than 64K, the linker
655 # will have to patch this single instruction with a call to some out-of-order code which
656 # does the load from the TOC. This is of course slower, and we also would have
657 # to use '-bbigtoc' for linking anyway so we could also change the PICFLAG to 'qpic=large'.
658 # With 'qpic=large' the compiler will by default generate a two-instruction sequence which
659 # can be patched directly by the linker and does not require a jump to out-of-order code.
660 #
661 # Since large TOC causes perf. overhead, only pay it where we must. Currently this is
662 # for all libjvm variants (both gtest and normal) but no other binaries. So, build
663 # libjvm with -qpic=large and link with -bbigtoc.
664 JVM_PICFLAG="-qpic=large"
665 JDK_PICFLAG="-qpic"
666 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
667 PICFLAG=""
668 fi
669
670 if test "x$TOOLCHAIN_TYPE" != xxlc; then
671 JVM_PICFLAG="$PICFLAG"
672 JDK_PICFLAG="$PICFLAG"
673 fi
674
675 if test "x$OPENJDK_TARGET_OS" = xmacosx; then
676 # Linking is different on MacOSX
677 JDK_PICFLAG=''
678 if test "x$STATIC_BUILD" = xtrue; then
679 JVM_PICFLAG=""
680 fi
681 fi
682
683 # Optional POSIX functionality needed by the JVM
684 #
685 # Check if clock_gettime is available and in which library. This indicates
686 # availability of CLOCK_MONOTONIC for hotspot. But we don't need to link, so
687 # don't let it update LIBS.
688 save_LIBS="$LIBS"
689 AC_SEARCH_LIBS(clock_gettime, rt, [HAS_CLOCK_GETTIME=true], [])
690 if test "x$LIBS" = "x-lrt "; then
691 CLOCK_GETTIME_IN_LIBRT=true
692 fi
693 LIBS="$save_LIBS"
694
695 if test "x$HAS_CLOCK_GETTIME" = "xtrue"; then
696 OS_CFLAGS_JVM="$OS_CFLAGS_JVM -DSUPPORTS_CLOCK_MONOTONIC"
697 if test "x$CLOCK_GETTIME_IN_LIBRT" = "xtrue"; then
698 OS_CFLAGS_JVM="$OS_CFLAGS_JVM -DNEEDS_LIBRT"
699 fi
700 fi
701 ])
702
703 ################################################################################
704 # $1 - Either BUILD or TARGET to pick the correct OS/CPU variables to check
705 # conditionals against.
706 # $2 - Optional prefix for each variable defined.
707 # $3 - Optional prefix for compiler variables (either BUILD_ or nothing).
708 AC_DEFUN([FLAGS_SETUP_CFLAGS_CPU_DEP],
709 [
710 #### CPU DEFINES, these should (in theory) be independent on toolchain
711
712 # Setup target CPU
713 # Setup endianness
714 if test "x$FLAGS_CPU_ENDIAN" = xlittle; then
715 $1_DEFINES_CPU_JVM="-DVM_LITTLE_ENDIAN"
716 fi
717 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
718 # The macro _LITTLE_ENDIAN needs to be defined the same to avoid the
719 # Sun C compiler warning message: warning: macro redefined: _LITTLE_ENDIAN
720 if test "x$FLAGS_CPU_ENDIAN" = xlittle; then
721 $1_DEFINES_CPU_JDK="-D_LITTLE_ENDIAN="
722 else
723 $1_DEFINES_CPU_JDK="-D_BIG_ENDIAN="
724 fi
725 else
726 if test "x$FLAGS_CPU_ENDIAN" = xlittle; then
727 $1_DEFINES_CPU_JDK="-D_LITTLE_ENDIAN"
728 else
729 $1_DEFINES_CPU_JDK="-D_BIG_ENDIAN"
730 fi
731 fi
732
733 # setup CPU bit size
734 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -DARCH='\"$FLAGS_CPU_LEGACY\"' \
735 -D$FLAGS_CPU_LEGACY"
736
737 if test "x$FLAGS_CPU_BITS" = x64; then
738 # -D_LP64=1 is only set on linux and mac. Setting on windows causes diff in
739 # unpack200.exe.
740 if test "x$FLAGS_OS" = xlinux || test "x$FLAGS_OS" = xmacosx; then
741 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_LP64=1"
742 fi
743 if test "x$FLAGS_OS" != xsolaris && test "x$FLAGS_OS" != xaix; then
744 # Solaris does not have _LP64=1 in the old build.
745 # xlc on AIX defines _LP64=1 by default and issues a warning if we redefine it.
746 $1_DEFINES_CPU_JVM="${$1_DEFINES_CPU_JVM} -D_LP64=1"
747 fi
748 fi
749
750 # toolchain dependend, per-cpu
751 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
752 if test "x$FLAGS_CPU_ARCH" = xx86; then
753 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -DcpuIntel -Di586 -D$FLAGS_CPU_LEGACY_LIB"
754 fi
755 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
756 if test "x$FLAGS_CPU" = xx86_64; then
757 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_AMD64_ -Damd64"
758 else
759 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_X86_ -Dx86"
760 fi
761 fi
762
763 # CFLAGS PER CPU
764 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then
765 # COMMON to gcc and clang
766 if test "x$FLAGS_CPU" = xx86; then
767 # Force compatibility with i586 on 32 bit intel platforms.
768 $1_CFLAGS_CPU="-march=i586"
769 fi
770 fi
771
772 if test "x$TOOLCHAIN_TYPE" = xgcc; then
773 if test "x$FLAGS_CPU" = xarm; then
774 # -Wno-psabi to get rid of annoying "note: the mangling of 'va_list' has changed in GCC 4.4"
775 $1_CFLAGS_CPU="-fsigned-char -Wno-psabi $ARM_ARCH_TYPE_FLAGS $ARM_FLOAT_TYPE_FLAGS -DJDK_ARCH_ABI_PROP_NAME='\"\$(JDK_ARCH_ABI_PROP_NAME)\"'"
776 $1_CFLAGS_CPU_JVM="-DARM"
777 elif test "x$FLAGS_CPU_ARCH" = xppc; then
778 $1_CFLAGS_CPU_JVM="-minsert-sched-nops=regroup_exact -mno-multiple -mno-string"
779 if test "x$FLAGS_CPU" = xppc64; then
780 # -mminimal-toc fixes `relocation truncated to fit' error for gcc 4.1.
781 # Use ppc64 instructions, but schedule for power5
782 $1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -mminimal-toc -mcpu=powerpc64 -mtune=power5"
783 elif test "x$FLAGS_CPU" = xppc64le; then
784 # Little endian machine uses ELFv2 ABI.
785 # Use Power8, this is the first CPU to support PPC64 LE with ELFv2 ABI.
786 $1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -DABI_ELFv2 -mcpu=power8 -mtune=power8"
787 fi
788 elif test "x$FLAGS_CPU" = xs390x; then
789 $1_CFLAGS_CPU="-mbackchain -march=z10"
790 fi
791
792 if test "x$FLAGS_CPU_ARCH" != xarm && test "x$FLAGS_CPU_ARCH" != xppc; then
793 # for all archs except arm and ppc, prevent gcc to omit frame pointer
794 $1_CFLAGS_CPU_JDK="${$1_CFLAGS_CPU_JDK} -fno-omit-frame-pointer"
795 fi
796
797 $1_CXXSTD_CXXFLAG="-std=gnu++98"
798 FLAGS_CXX_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${$1_CXXSTD_CXXFLAG} -Werror],
799 PREFIX: $3, IF_FALSE: [$1_CXXSTD_CXXFLAG=""])
800 $1_TOOLCHAIN_CFLAGS_JDK_CXXONLY="${$1_CXXSTD_CXXFLAG}"
801 $1_TOOLCHAIN_CFLAGS_JVM="${$1_TOOLCHAIN_CFLAGS_JVM} ${$1_CXXSTD_CXXFLAG}"
802 $2ADLC_CXXFLAG="${$1_CXXSTD_CXXFLAG}"
803
804 elif test "x$TOOLCHAIN_TYPE" = xclang; then
805 if test "x$FLAGS_OS" = xlinux; then
806 # ppc test not really needed for clang
807 if test "x$FLAGS_CPU_ARCH" != xarm && test "x$FLAGS_CPU_ARCH" != xppc; then
808 # for all archs except arm and ppc, prevent gcc to omit frame pointer
809 $1_CFLAGS_CPU_JDK="${$1_CFLAGS_CPU_JDK} -fno-omit-frame-pointer"
810 fi
811 fi
812
813 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
814 if test "x$FLAGS_CPU" = xx86_64; then
815 # NOTE: -xregs=no%frameptr is supposed to be default on x64
816 $1_CFLAGS_CPU_JDK="-xregs=no%frameptr"
817 elif test "x$FLAGS_CPU" = xsparcv9; then
818 $1_CFLAGS_CPU_JVM="-xarch=sparc"
819 $1_CFLAGS_CPU_JDK_LIBONLY="-xregs=no%appl"
820 fi
821
822 elif test "x$TOOLCHAIN_TYPE" = xxlc; then
823 if test "x$FLAGS_CPU" = xppc64; then
824 $1_CFLAGS_CPU_JVM="-qarch=ppc64"
825 fi
826
827 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
828 if test "x$FLAGS_CPU" = xx86; then
829 $1_CFLAGS_CPU_JVM="-arch:IA32"
830 elif test "x$OPENJDK_TARGET_CPU" = xx86_64; then
831 if test "x$DEBUG_LEVEL" != xrelease; then
832 # NOTE: This is probably redundant; -homeparams is default on
833 # non-release builds.
834 $1_CFLAGS_CPU_JVM="-homeparams"
835 fi
836 fi
837 fi
838
839 if test "x$TOOLCHAIN_TYPE" = xgcc; then
840 FLAGS_SETUP_GCC6_COMPILER_FLAGS($1, $3)
841 $1_TOOLCHAIN_CFLAGS="${$1_GCC6_CFLAGS}"
842
843 $1_WARNING_CFLAGS_JVM="-Wno-format-zero-length -Wtype-limits -Wuninitialized"
844 fi
845
846 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then
847 # Check if compiler supports -fmacro-prefix-map. If so, use that to make
848 # the __FILE__ macro resolve to paths relative to the workspace root.
849 workspace_root_trailing_slash="${WORKSPACE_ROOT%/}/"
850 FILE_MACRO_CFLAGS="-fmacro-prefix-map=${workspace_root_trailing_slash}="
851 FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${FILE_MACRO_CFLAGS}],
852 PREFIX: $3,
853 IF_FALSE: [
854 FILE_MACRO_CFLAGS=
855 ]
856 )
857 fi
858
859 # EXPORT to API
860 CFLAGS_JVM_COMMON="$ALWAYS_CFLAGS_JVM $ALWAYS_DEFINES_JVM \
861 $TOOLCHAIN_CFLAGS_JVM ${$1_TOOLCHAIN_CFLAGS_JVM} \
862 $OS_CFLAGS $OS_CFLAGS_JVM $CFLAGS_OS_DEF_JVM $DEBUG_CFLAGS_JVM \
863 $WARNING_CFLAGS $WARNING_CFLAGS_JVM $JVM_PICFLAG $FILE_MACRO_CFLAGS"
864
865 CFLAGS_JDK_COMMON="$ALWAYS_CFLAGS_JDK $ALWAYS_DEFINES_JDK $TOOLCHAIN_CFLAGS_JDK \
866 $OS_CFLAGS $CFLAGS_OS_DEF_JDK $DEBUG_CFLAGS_JDK $DEBUG_OPTIONS_FLAGS_JDK \
867 $WARNING_CFLAGS $WARNING_CFLAGS_JDK $DEBUG_SYMBOLS_CFLAGS_JDK \
868 $FILE_MACRO_CFLAGS"
869
870 # Use ${$2EXTRA_CFLAGS} to block EXTRA_CFLAGS to be added to build flags.
871 # (Currently we don't have any OPENJDK_BUILD_EXTRA_CFLAGS, but that might
872 # change in the future.)
873
874 CFLAGS_JDK_COMMON_CONLY="$TOOLCHAIN_CFLAGS_JDK_CONLY \
875 $WARNING_CFLAGS_JDK_CONLY ${$2EXTRA_CFLAGS}"
876 CFLAGS_JDK_COMMON_CXXONLY="$ALWAYS_DEFINES_JDK_CXXONLY \
877 $TOOLCHAIN_CFLAGS_JDK_CXXONLY \
878 ${$1_TOOLCHAIN_CFLAGS_JDK_CXXONLY} \
879 $WARNING_CFLAGS_JDK_CXXONLY ${$2EXTRA_CXXFLAGS}"
880
881 $1_CFLAGS_JVM="${$1_DEFINES_CPU_JVM} ${$1_CFLAGS_CPU} ${$1_CFLAGS_CPU_JVM} ${$1_TOOLCHAIN_CFLAGS} ${$1_WARNING_CFLAGS_JVM}"
882 $1_CFLAGS_JDK="${$1_DEFINES_CPU_JDK} ${$1_CFLAGS_CPU} ${$1_CFLAGS_CPU_JDK} ${$1_TOOLCHAIN_CFLAGS}"
883
884 $2JVM_CFLAGS="$CFLAGS_JVM_COMMON ${$1_CFLAGS_JVM} ${$2EXTRA_CXXFLAGS}"
885
886 $2CFLAGS_JDKEXE="$CFLAGS_JDK_COMMON $CFLAGS_JDK_COMMON_CONLY ${$1_CFLAGS_JDK}"
887 $2CXXFLAGS_JDKEXE="$CFLAGS_JDK_COMMON $CFLAGS_JDK_COMMON_CXXONLY ${$1_CFLAGS_JDK}"
888 $2CFLAGS_JDKLIB="${$2CFLAGS_JDKEXE} $JDK_PICFLAG ${$1_CFLAGS_CPU_JDK_LIBONLY}"
889 $2CXXFLAGS_JDKLIB="${$2CXXFLAGS_JDKEXE} $JDK_PICFLAG ${$1_CFLAGS_CPU_JDK_LIBONLY}"
890
891 AC_SUBST($2JVM_CFLAGS)
892 AC_SUBST($2CFLAGS_JDKLIB)
893 AC_SUBST($2CFLAGS_JDKEXE)
894 AC_SUBST($2CXXFLAGS_JDKLIB)
895 AC_SUBST($2CXXFLAGS_JDKEXE)
896 AC_SUBST($2ADLC_CXXFLAG)
897
898 COMPILER_FP_CONTRACT_OFF_FLAG="-ffp-contract=off"
899 # Check that the compiler supports -ffp-contract=off flag
900 # Set FDLIBM_CFLAGS to -ffp-contract=off if it does. Empty
901 # otherwise.
902 # These flags are required for GCC-based builds of
903 # fdlibm with optimization without losing precision.
904 # Notably, -ffp-contract=off needs to be added for GCC >= 4.6.
905 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then
906 FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${COMPILER_FP_CONTRACT_OFF_FLAG}],
907 PREFIX: $3,
908 IF_TRUE: [$2FDLIBM_CFLAGS=${COMPILER_FP_CONTRACT_OFF_FLAG}],
909 IF_FALSE: [$2FDLIBM_CFLAGS=""])
910 fi
911 AC_SUBST($2FDLIBM_CFLAGS)
912 ])
913
914 # FLAGS_SETUP_GCC6_COMPILER_FLAGS([PREFIX])
915 # Arguments:
916 # $1 - Prefix for each variable defined.
917 # $2 - Prefix for compiler variables (either BUILD_ or nothing).
918 AC_DEFUN([FLAGS_SETUP_GCC6_COMPILER_FLAGS],
919 [
920 # These flags are required for GCC 6 builds as undefined behaviour in OpenJDK code
921 # runs afoul of the more aggressive versions of these optimisations.
922 # Notably, value range propagation now assumes that the this pointer of C++
923 # member functions is non-null.
924 NO_DELETE_NULL_POINTER_CHECKS_CFLAG="-fno-delete-null-pointer-checks"
925 FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_DELETE_NULL_POINTER_CHECKS_CFLAG -Werror],
926 PREFIX: $2, IF_FALSE: [NO_DELETE_NULL_POINTER_CHECKS_CFLAG=""])
927 NO_LIFETIME_DSE_CFLAG="-fno-lifetime-dse"
928 FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_LIFETIME_DSE_CFLAG -Werror],
929 PREFIX: $2, IF_FALSE: [NO_LIFETIME_DSE_CFLAG=""])
930 $1_GCC6_CFLAGS="${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} ${NO_LIFETIME_DSE_CFLAG}"
931 ])
932
933 # Documentation on common flags used for solstudio in HIGHEST.
934 #
935 # WARNING: Use of OPTIMIZATION_LEVEL=HIGHEST in your Makefile needs to be
936 # done with care, there are some assumptions below that need to
937 # be understood about the use of pointers, and IEEE behavior.
938 #
939 # -fns: Use non-standard floating point mode (not IEEE 754)
940 # -fsimple: Do some simplification of floating point arithmetic (not IEEE 754)
941 # -fsingle: Use single precision floating point with 'float'
942 # -xalias_level=basic: Assume memory references via basic pointer types do not alias
943 # (Source with excessing pointer casting and data access with mixed
944 # pointer types are not recommended)
945 # -xbuiltin=%all: Use intrinsic or inline versions for math/std functions
946 # (If you expect perfect errno behavior, do not use this)
947 # -xdepend: Loop data dependency optimizations (need -xO3 or higher)
948 # -xrestrict: Pointer parameters to functions do not overlap
949 # (Similar to -xalias_level=basic usage, but less obvious sometimes.
950 # If you pass in multiple pointers to the same data, do not use this)
951 # -xlibmil: Inline some library routines
952 # (If you expect perfect errno behavior, do not use this)
953 # -xlibmopt: Use optimized math routines (CURRENTLY DISABLED)
954 # (If you expect perfect errno behavior, do not use this)
955 # Can cause undefined external on Solaris 8 X86 on __sincos, removing for now