1 #
2 # Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
3 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 #
5 # This code is free software; you can redistribute it and/or modify it
6 # under the terms of the GNU General Public License version 2 only, as
7 # published by the Free Software Foundation. Oracle designates this
8 # particular file as subject to the "Classpath" exception as provided
9 # by Oracle in the LICENSE file that accompanied this code.
10 #
11 # This code is distributed in the hope that it will be useful, but WITHOUT
12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 # version 2 for more details (a copy is included in the LICENSE file that
15 # accompanied this code).
16 #
17 # You should have received a copy of the GNU General Public License version
18 # 2 along with this work; if not, write to the Free Software Foundation,
19 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 #
21 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 # or visit www.oracle.com if you need additional information or have any
23 # questions.
24 #
25
26 ################################################################################
27 #
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:[$]1'
97 fi
98
99 AC_SUBST(C_FLAG_REORDER)
100 AC_SUBST(SET_EXECUTABLE_ORIGIN)
101 AC_SUBST(SET_SHARED_LIBRARY_ORIGIN)
102 AC_SUBST(SET_SHARED_LIBRARY_NAME)
103 AC_SUBST(SET_SHARED_LIBRARY_MAPFILE)
104 AC_SUBST(SHARED_LIBRARY_FLAGS)
105 ])
106
107 AC_DEFUN([FLAGS_SETUP_DEBUG_SYMBOLS],
108 [
109 # Debug symbols
110 if test "x$TOOLCHAIN_TYPE" = xgcc; then
111 CFLAGS_DEBUG_SYMBOLS="-g"
112 elif test "x$TOOLCHAIN_TYPE" = xclang; then
113 CFLAGS_DEBUG_SYMBOLS="-g"
114 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
115 # -g0 enables debug symbols without disabling inlining.
116 CFLAGS_DEBUG_SYMBOLS="-g0 -xs"
117 elif test "x$TOOLCHAIN_TYPE" = xxlc; then
118 CFLAGS_DEBUG_SYMBOLS="-g"
119 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
120 CFLAGS_DEBUG_SYMBOLS="-Z7 -d2Zi+"
121 fi
122
123 AC_SUBST(CFLAGS_DEBUG_SYMBOLS)
124 ])
125
126 AC_DEFUN([FLAGS_SETUP_WARNINGS],
127 [
128 AC_ARG_ENABLE([warnings-as-errors], [AS_HELP_STRING([--disable-warnings-as-errors],
129 [do not consider native warnings to be an error @<:@enabled@:>@])])
130
131 # Set default value.
132 if test "x$TOOLCHAIN_TYPE" = xxlc; then
133 WARNINGS_AS_ERRORS=false
134 else
135 WARNINGS_AS_ERRORS=true
136 fi
137
138 AC_MSG_CHECKING([if native warnings are errors])
139 if test "x$enable_warnings_as_errors" = "xyes"; then
140 AC_MSG_RESULT([yes (explicitly set)])
141 WARNINGS_AS_ERRORS=true
142 elif test "x$enable_warnings_as_errors" = "xno"; then
143 AC_MSG_RESULT([no (explicitly set)])
144 WARNINGS_AS_ERRORS=false
145 elif test "x$enable_warnings_as_errors" = "x"; then
146 AC_MSG_RESULT([${WARNINGS_AS_ERRORS} (default)])
147 else
148 AC_MSG_ERROR([--enable-warnings-as-errors accepts no argument])
149 fi
150
151 AC_SUBST(WARNINGS_AS_ERRORS)
152
153 case "${TOOLCHAIN_TYPE}" in
154 microsoft)
155 DISABLE_WARNING_PREFIX="-wd"
156 CFLAGS_WARNINGS_ARE_ERRORS="-WX"
157 ;;
158 solstudio)
159 DISABLE_WARNING_PREFIX="-erroff="
160 CFLAGS_WARNINGS_ARE_ERRORS="-errtags -errwarn=%all"
161 ;;
162 gcc)
163 DISABLE_WARNING_PREFIX="-Wno-"
164 CFLAGS_WARNINGS_ARE_ERRORS="-Werror"
165 # Repeate the check for the BUILD_CC and BUILD_CXX. Need to also reset
166 # CFLAGS since any target specific flags will likely not work with the
167 # build compiler
168 CC_OLD="$CC"
169 CXX_OLD="$CXX"
170 CC="$BUILD_CC"
171 CXX="$BUILD_CXX"
172 CFLAGS_OLD="$CFLAGS"
173 CFLAGS=""
174 BUILD_CC_DISABLE_WARNING_PREFIX="-Wno-"
175 CC="$CC_OLD"
176 CXX="$CXX_OLD"
177 CFLAGS="$CFLAGS_OLD"
178 ;;
179 clang)
180 DISABLE_WARNING_PREFIX="-Wno-"
181 CFLAGS_WARNINGS_ARE_ERRORS="-Werror"
182 ;;
183 xlc)
184 DISABLE_WARNING_PREFIX="-qsuppress="
185 CFLAGS_WARNINGS_ARE_ERRORS="-qhalt=w"
186 ;;
187 esac
188 AC_SUBST(DISABLE_WARNING_PREFIX)
189 AC_SUBST(BUILD_CC_DISABLE_WARNING_PREFIX)
190 AC_SUBST(CFLAGS_WARNINGS_ARE_ERRORS)
191 ])
192
193 AC_DEFUN([FLAGS_SETUP_QUALITY_CHECKS],
194 [
195 # bounds, memory and behavior checking options
196 if test "x$TOOLCHAIN_TYPE" = xgcc; then
197 case $DEBUG_LEVEL in
198 release )
199 # no adjustment
200 ;;
201 fastdebug )
202 # no adjustment
203 ;;
204 slowdebug )
205 # FIXME: By adding this to C(XX)FLAGS_DEBUG_OPTIONS/JVM_CFLAGS_SYMBOLS it
206 # get's added conditionally on whether we produce debug symbols or not.
207 # This is most likely not really correct.
208
209 # Add runtime stack smashing and undefined behavior checks.
210 CFLAGS_DEBUG_OPTIONS="-fstack-protector-all --param ssp-buffer-size=1"
211 CXXFLAGS_DEBUG_OPTIONS="-fstack-protector-all --param ssp-buffer-size=1"
212
213 JVM_CFLAGS_SYMBOLS="$JVM_CFLAGS_SYMBOLS -fstack-protector-all --param ssp-buffer-size=1"
214 ;;
215 esac
216 fi
217 ])
218
219 AC_DEFUN([FLAGS_SETUP_OPTIMIZATION],
220 [
221 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
222 CC_HIGHEST="-fns -fsimple -fsingle -xbuiltin=%all -xdepend -xrestrict -xlibmil"
223
224 C_O_FLAG_HIGHEST_JVM="-xO4"
225 C_O_FLAG_DEBUG_JVM=""
226 C_O_FLAG_SIZE=""
227 C_O_FLAG_DEBUG=""
228 C_O_FLAG_NONE=""
229 if test "x$OPENJDK_TARGET_CPU_ARCH" = "xx86"; then
230 C_O_FLAG_HIGHEST="-xO4 -Wu,-O4~yz $CC_HIGHEST"
231 C_O_FLAG_HI="-xO4 -Wu,-O4~yz"
232 C_O_FLAG_NORM="-xO2 -Wu,-O2~yz"
233 elif test "x$OPENJDK_TARGET_CPU_ARCH" = "xsparc"; then
234 C_O_FLAG_HIGHEST="-xO4 -Wc,-Qrm-s -Wc,-Qiselect-T0 \
235 -xprefetch=auto,explicit $CC_HIGHEST"
236 C_O_FLAG_HI="-xO4 -Wc,-Qrm-s -Wc,-Qiselect-T0"
237 C_O_FLAG_NORM="-xO2 -Wc,-Qrm-s -Wc,-Qiselect-T0"
238 fi
239 elif test "x$TOOLCHAIN_TYPE" = xgcc; then
240 C_O_FLAG_HIGHEST_JVM="-O3"
241 C_O_FLAG_HIGHEST="-O3"
242 C_O_FLAG_HI="-O3"
243 C_O_FLAG_NORM="-O2"
244 C_O_FLAG_SIZE="-Os"
245 C_O_FLAG_DEBUG="-O0"
246 C_O_FLAG_DEBUG_JVM="-O0"
247 C_O_FLAG_NONE="-O0"
248 elif test "x$TOOLCHAIN_TYPE" = xclang; then
249 if test "x$OPENJDK_TARGET_OS" = xmacosx; then
250 # On MacOSX we optimize for size, something
251 # we should do for all platforms?
252 C_O_FLAG_HIGHEST_JVM="-Os"
253 C_O_FLAG_HIGHEST="-Os"
254 C_O_FLAG_HI="-Os"
255 C_O_FLAG_NORM="-Os"
256 C_O_FLAG_DEBUG_JVM=""
257 else
258 C_O_FLAG_HIGHEST_JVM="-O3"
259 C_O_FLAG_HIGHEST="-O3"
260 C_O_FLAG_HI="-O3"
261 C_O_FLAG_NORM="-O2"
262 C_O_FLAG_DEBUG_JVM="-O0"
263 fi
264 C_O_FLAG_SIZE="-Os"
265 C_O_FLAG_DEBUG="-O0"
266 C_O_FLAG_NONE="-O0"
267 elif test "x$TOOLCHAIN_TYPE" = xxlc; then
268 C_O_FLAG_HIGHEST_JVM="-O3 -qhot=level=1 -qinline -qinlglue"
269 C_O_FLAG_HIGHEST="-O3 -qhot=level=1 -qinline -qinlglue"
270 C_O_FLAG_HI="-O3 -qinline -qinlglue"
271 C_O_FLAG_NORM="-O2"
272 C_O_FLAG_DEBUG="-qnoopt"
273 # FIXME: Value below not verified.
274 C_O_FLAG_DEBUG_JVM=""
275 C_O_FLAG_NONE="-qnoopt"
276 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
277 C_O_FLAG_HIGHEST_JVM="-O2 -Oy-"
278 C_O_FLAG_HIGHEST="-O2"
279 C_O_FLAG_HI="-O1"
280 C_O_FLAG_NORM="-O1"
281 C_O_FLAG_DEBUG="-Od"
282 C_O_FLAG_DEBUG_JVM=""
283 C_O_FLAG_NONE="-Od"
284 C_O_FLAG_SIZE="-Os"
285 fi
286
287 # Now copy to C++ flags
288 CXX_O_FLAG_HIGHEST_JVM="$C_O_FLAG_HIGHEST_JVM"
289 CXX_O_FLAG_HIGHEST="$C_O_FLAG_HIGHEST"
290 CXX_O_FLAG_HI="$C_O_FLAG_HI"
291 CXX_O_FLAG_NORM="$C_O_FLAG_NORM"
292 CXX_O_FLAG_DEBUG="$C_O_FLAG_DEBUG"
293 CXX_O_FLAG_DEBUG_JVM="$C_O_FLAG_DEBUG_JVM"
294 CXX_O_FLAG_NONE="$C_O_FLAG_NONE"
295 CXX_O_FLAG_SIZE="$C_O_FLAG_SIZE"
296
297 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
298 # In solstudio, also add this to C (but not C++) flags...
299 C_O_FLAG_HIGHEST="$C_O_FLAG_HIGHEST -xalias_level=basic"
300 fi
301
302 # Adjust optimization flags according to debug level.
303 case $DEBUG_LEVEL in
304 release )
305 # no adjustment
306 ;;
307 fastdebug )
308 # Not quite so much optimization
309 C_O_FLAG_HI="$C_O_FLAG_NORM"
310 CXX_O_FLAG_HI="$CXX_O_FLAG_NORM"
311 ;;
312 slowdebug )
313 # Disable optimization
314 C_O_FLAG_HIGHEST_JVM="$C_O_FLAG_DEBUG_JVM"
315 C_O_FLAG_HIGHEST="$C_O_FLAG_DEBUG"
316 C_O_FLAG_HI="$C_O_FLAG_DEBUG"
317 C_O_FLAG_NORM="$C_O_FLAG_DEBUG"
318 C_O_FLAG_SIZE="$C_O_FLAG_DEBUG"
319 CXX_O_FLAG_HIGHEST_JVM="$CXX_O_FLAG_DEBUG_JVM"
320 CXX_O_FLAG_HIGHEST="$CXX_O_FLAG_DEBUG"
321 CXX_O_FLAG_HI="$CXX_O_FLAG_DEBUG"
322 CXX_O_FLAG_NORM="$CXX_O_FLAG_DEBUG"
323 CXX_O_FLAG_SIZE="$CXX_O_FLAG_DEBUG"
324 ;;
325 esac
326
327 AC_SUBST(C_O_FLAG_HIGHEST_JVM)
328 AC_SUBST(C_O_FLAG_HIGHEST)
329 AC_SUBST(C_O_FLAG_HI)
330 AC_SUBST(C_O_FLAG_NORM)
331 AC_SUBST(C_O_FLAG_NONE)
332 AC_SUBST(C_O_FLAG_SIZE)
333 AC_SUBST(CXX_O_FLAG_HIGHEST_JVM)
334 AC_SUBST(CXX_O_FLAG_HIGHEST)
335 AC_SUBST(CXX_O_FLAG_HI)
336 AC_SUBST(CXX_O_FLAG_NORM)
337 AC_SUBST(CXX_O_FLAG_NONE)
338 AC_SUBST(CXX_O_FLAG_SIZE)
339 ])
340
341 AC_DEFUN([FLAGS_SETUP_CFLAGS],
342 [
343 ### CFLAGS
344
345 FLAGS_SETUP_CFLAGS_HELPER
346
347 FLAGS_OS=$OPENJDK_TARGET_OS
348 FLAGS_OS_TYPE=$OPENJDK_TARGET_OS_TYPE
349 FLAGS_CPU=$OPENJDK_TARGET_CPU
350 FLAGS_CPU_ARCH=$OPENJDK_TARGET_CPU_ARCH
351 FLAGS_CPU_BITS=$OPENJDK_TARGET_CPU_BITS
352 FLAGS_CPU_ENDIAN=$OPENJDK_TARGET_CPU_ENDIAN
353 FLAGS_CPU_LEGACY=$OPENJDK_TARGET_CPU_LEGACY
354 FLAGS_CPU_LEGACY_LIB=$OPENJDK_TARGET_CPU_LEGACY_LIB
355
356 FLAGS_SETUP_CFLAGS_CPU_DEP([TARGET])
357
358 FLAGS_OS=$OPENJDK_BUILD_OS
359 FLAGS_OS_TYPE=$OPENJDK_BUILD_OS_TYPE
360 FLAGS_CPU=$OPENJDK_BUILD_CPU
361 FLAGS_CPU_ARCH=$OPENJDK_BUILD_CPU_ARCH
362 FLAGS_CPU_BITS=$OPENJDK_BUILD_CPU_BITS
363 FLAGS_CPU_ENDIAN=$OPENJDK_BUILD_CPU_ENDIAN
364 FLAGS_CPU_LEGACY=$OPENJDK_BUILD_CPU_LEGACY
365 FLAGS_CPU_LEGACY_LIB=$OPENJDK_BUILD_CPU_LEGACY_LIB
366
367 FLAGS_SETUP_CFLAGS_CPU_DEP([BUILD], [OPENJDK_BUILD_])
368
369 # Tests are only ever compiled for TARGET
370 CFLAGS_TESTLIB="$CFLAGS_JDKLIB"
371 CXXFLAGS_TESTLIB="$CXXFLAGS_JDKLIB"
372 CFLAGS_TESTEXE="$CFLAGS_JDKEXE"
373 CXXFLAGS_TESTEXE="$CXXFLAGS_JDKEXE"
374
375 AC_SUBST(CFLAGS_TESTLIB)
376 AC_SUBST(CFLAGS_TESTEXE)
377 AC_SUBST(CXXFLAGS_TESTLIB)
378 AC_SUBST(CXXFLAGS_TESTEXE)
379 ])
380
381 ################################################################################
382 # platform independent
383 AC_DEFUN([FLAGS_SETUP_CFLAGS_HELPER],
384 [
385 #### OS DEFINES, these should be independent on toolchain
386 if test "x$OPENJDK_TARGET_OS" = xlinux; then
387 CFLAGS_OS_DEF_JVM="-DLINUX"
388 CFLAGS_OS_DEF_JDK="-D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE"
389 elif test "x$OPENJDK_TARGET_OS" = xsolaris; then
390 CFLAGS_OS_DEF_JVM="-DSOLARIS"
391 CFLAGS_OS_DEF_JDK="-D__solaris__"
392 elif test "x$OPENJDK_TARGET_OS" = xmacosx; then
393 CFLAGS_OS_DEF_JVM="-D_ALLBSD_SOURCE -D_DARWIN_C_SOURCE -D_XOPEN_SOURCE"
394 CFLAGS_OS_DEF_JDK="-D_ALLBSD_SOURCE -D_DARWIN_UNLIMITED_SELECT"
395 elif test "x$OPENJDK_TARGET_OS" = xaix; then
396 CFLAGS_OS_DEF_JVM="-DAIX"
397 elif test "x$OPENJDK_TARGET_OS" = xbsd; then
398 CFLAGS_OS_DEF_JDK="-D_ALLBSD_SOURCE"
399 elif test "x$OPENJDK_TARGET_OS" = xwindows; then
400 CFLAGS_OS_DEF_JVM="-D_WINDOWS -DWIN32 -D_JNI_IMPLEMENTATION_"
401 fi
402
403 CFLAGS_OS_DEF_JDK="$CFLAGS_OS_DEF_JDK -D$OPENJDK_TARGET_OS_UPPERCASE"
404
405 #### GLOBAL DEFINES
406 # Set some common defines. These works for all compilers, but assume
407 # -D is universally accepted.
408
409 # Always enable optional macros for VM.
410 ALWAYS_CFLAGS_JVM="-D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS"
411
412 # Setup some hard coded includes
413 ALWAYS_CFLAGS_JDK=" \
414 -I\$(SUPPORT_OUTPUTDIR)/modules_include/java.base \
415 -I\$(SUPPORT_OUTPUTDIR)/modules_include/java.base/\$(OPENJDK_TARGET_OS_INCLUDE_SUBDIR) \
416 -I${TOPDIR}/src/java.base/share/native/libjava \
417 -I${TOPDIR}/src/java.base/$OPENJDK_TARGET_OS_TYPE/native/libjava \
418 -I${TOPDIR}/src/hotspot/share/include \
419 -I${TOPDIR}/src/hotspot/os/${HOTSPOT_TARGET_OS_TYPE}/include"
420
421 ###############################################################################
422
423 # Adjust flags according to debug level.
424 # Setup debug/release defines
425 if test "x$DEBUG_LEVEL" = xrelease; then
426 DEBUG_CFLAGS_JDK="-DNDEBUG"
427 if test "x$OPENJDK_TARGET_OS" = xsolaris; then
428 DEBUG_CFLAGS_JDK="$DEBUG_CFLAGS_JDK -DTRIMMED"
429 fi
430 else
431 DEBUG_CFLAGS_JDK="-DDEBUG"
432
433 if test "x$TOOLCHAIN_TYPE" = xxlc; then
434 # We need '-qminimaltoc' or '-qpic=large -bbigtoc' if the TOC overflows.
435 # Hotspot now overflows its 64K TOC (currently only for debug),
436 # so for debug we build with '-qpic=large -bbigtoc'.
437 DEBUG_CFLAGS_JVM="-qpic=large"
438 fi
439 fi
440
441 if test "x$DEBUG_LEVEL" != xrelease; then
442 DEBUG_OPTIONS_FLAGS_JDK="$CFLAGS_DEBUG_OPTIONS"
443 DEBUG_SYMBOLS_CFLAGS_JDK="$CFLAGS_DEBUG_SYMBOLS"
444 fi
445
446 #### TOOLCHAIN DEFINES
447
448 if test "x$TOOLCHAIN_TYPE" = xgcc; then
449 ALWAYS_DEFINES_JVM="-D_GNU_SOURCE -D_REENTRANT"
450 elif test "x$TOOLCHAIN_TYPE" = xclang; then
451 ALWAYS_DEFINES_JVM="-D_GNU_SOURCE"
452 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
453 ALWAYS_DEFINES_JVM="-DSPARC_WORKS -D_Crun_inline_placement"
454 ALWAYS_DEFINES_JDK="-DTRACING -DMACRO_MEMSYS_OPS -DBREAKPTS"
455 ALWAYS_DEFINES_JDK_CXXONLY="-DCC_NOEX"
456 elif test "x$TOOLCHAIN_TYPE" = xxlc; then
457 ALWAYS_DEFINES_JVM="-D_REENTRANT"
458 ALWAYS_DEFINES_JDK="-D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE -DSTDC"
459 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
460 ALWAYS_DEFINES_JDK="-DWIN32_LEAN_AND_MEAN -D_CRT_SECURE_NO_DEPRECATE \
461 -D_CRT_NONSTDC_NO_DEPRECATE -DWIN32 -DIAL"
462 ALWAYS_DEFINES_JVM="-DNOMINMAX -DWIN32_LEAN_AND_MEAN"
463 fi
464
465 ###############################################################################
466 #
467 #
468 # CFLAGS BASIC
469 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then
470 # COMMON to gcc and clang
471 TOOLCHAIN_CFLAGS_JVM="-pipe -fno-rtti -fno-exceptions \
472 -fvisibility=hidden -fno-strict-aliasing -fno-omit-frame-pointer"
473 fi
474
475 if test "x$TOOLCHAIN_TYPE" = xgcc; then
476 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -fcheck-new"
477 TOOLCHAIN_CFLAGS_JDK="-pipe"
478 TOOLCHAIN_CFLAGS_JDK_CONLY="-fno-strict-aliasing" # technically NOT for CXX (but since this gives *worse* performance, use no-strict-aliasing everywhere!)
479
480 CXXSTD_CXXFLAG="-std=gnu++98"
481 FLAGS_CXX_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$CXXSTD_CXXFLAG -Werror],
482 IF_FALSE: [CXXSTD_CXXFLAG=""])
483 TOOLCHAIN_CFLAGS_JDK_CXXONLY="$CXXSTD_CXXFLAG"
484 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM $CXXSTD_CXXFLAG"
485 ADLC_CXXFLAG="$CXXSTD_CXXFLAG"
486
487
488 elif test "x$TOOLCHAIN_TYPE" = xclang; then
489 # Restrict the debug information created by Clang to avoid
490 # too big object files and speed the build up a little bit
491 # (see http://llvm.org/bugs/show_bug.cgi?id=7554)
492 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -flimit-debug-info"
493
494 # In principle the stack alignment below is cpu- and ABI-dependent and
495 # should agree with values of StackAlignmentInBytes in various
496 # src/hotspot/cpu/*/globalDefinitions_*.hpp files, but this value currently
497 # works for all platforms.
498 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -mno-omit-leaf-frame-pointer -mstack-alignment=16"
499
500 if test "x$OPENJDK_TARGET_OS" = xlinux; then
501 TOOLCHAIN_CFLAGS_JDK="-pipe"
502 TOOLCHAIN_CFLAGS_JDK_CONLY="-fno-strict-aliasing" # technically NOT for CXX
503 fi
504 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
505 TOOLCHAIN_CFLAGS_JDK="-mt"
506 TOOLCHAIN_CFLAGS_JDK_CONLY="-xc99=%none -xCC -Xa -v -W0,-noglobal" # C only
507 TOOLCHAIN_CFLAGS_JDK_CXXONLY="-features=no%except -norunpath -xnolib" # CXX only
508 TOOLCHAIN_CFLAGS_JVM="-template=no%extdef -features=no%split_init \
509 -library=stlport4 -mt -features=no%except"
510 if test "x$DEBUG_LEVEL" = xslowdebug; then
511 # Previously -g was used instead of -g0 for slowdebug; this is equivalent
512 # to setting +d.
513 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM +d"
514 fi
515
516 elif test "x$TOOLCHAIN_TYPE" = xxlc; then
517 TOOLCHAIN_CFLAGS_JDK="-qchars=signed -qfullpath -qsaveopt" # add on both CFLAGS
518 TOOLCHAIN_CFLAGS_JVM="-qtune=balanced \
519 -qalias=noansi -qstrict -qtls=default -qlanglvl=c99vla \
520 -qlanglvl=noredefmac -qnortti -qnoeh -qignerrno"
521 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
522 TOOLCHAIN_CFLAGS_JVM="-nologo -MD -MP"
523 TOOLCHAIN_CFLAGS_JDK="-nologo -MD -Zc:wchar_t-"
524 fi
525
526 # CFLAGS WARNINGS STUFF
527 # Set JVM_CFLAGS warning handling
528 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then
529 # COMMON to gcc and clang
530 WARNING_CFLAGS_JVM="-Wpointer-arith -Wsign-compare -Wunused-function"
531 if ! HOTSPOT_CHECK_JVM_VARIANT(zero); then
532 # Non-zero builds have stricter warnings
533 WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wundef -Wformat=2"
534 fi
535
536 fi
537 if test "x$TOOLCHAIN_TYPE" = xgcc; then
538 WARNING_CFLAGS_JDK="-Wall -Wextra -Wno-unused -Wno-unused-parameter -Wformat=2"
539 WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wunused-value -Woverloaded-virtual"
540
541 if ! HOTSPOT_CHECK_JVM_VARIANT(zero); then
542 # Non-zero builds have stricter warnings
543 WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wreturn-type"
544 fi
545 elif test "x$TOOLCHAIN_TYPE" = xclang; then
546 WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wno-deprecated"
547 if test "x$OPENJDK_TARGET_OS" = xlinux; then
548 WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wno-sometimes-uninitialized"
549 WARNING_CFLAGS_JDK="-Wall -Wextra -Wno-unused -Wno-unused-parameter -Wformat=2"
550 fi
551 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
552 WARNING_CFLAGS_JDK_CONLY="-errshort=tags"
553 WARNING_CFLAGS_JDK_CXXONLY="+w"
554 WARNING_CFLAGS_JDK="-errtags=yes -errfmt"
555 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
556 WARNING_CFLAGS="-W3"
557 WARNING_CFLAGS_JDK="-wd4800"
558 WARNING_CFLAGS_JVM="-wd4800"
559 fi
560
561 # Set some additional per-OS defines.
562
563 # Additional macosx handling
564 if test "x$OPENJDK_TARGET_OS" = xmacosx; then
565 OS_CFLAGS="-DMAC_OS_X_VERSION_MIN_REQUIRED=$MACOSX_VERSION_MIN_NODOTS \
566 -mmacosx-version-min=$MACOSX_VERSION_MIN"
567
568 if test -n "$MACOSX_VERSION_MAX"; then
569 OS_CFLAGS="$OS_CFLAGS \
570 -DMAC_OS_X_VERSION_MAX_ALLOWED=$MACOSX_VERSION_MAX_NODOTS"
571 fi
572 fi
573
574 # Where does this really belong??
575 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then
576 PICFLAG="-fPIC"
577 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
578 PICFLAG="-KPIC"
579 elif test "x$TOOLCHAIN_TYPE" = xxlc; then
580 # '-qpic' defaults to 'qpic=small'. This means that the compiler generates only
581 # one instruction for accessing the TOC. If the TOC grows larger than 64K, the linker
582 # will have to patch this single instruction with a call to some out-of-order code which
583 # does the load from the TOC. This is of course slower, and we also would have
584 # to use '-bbigtoc' for linking anyway so we could also change the PICFLAG to 'qpic=large'.
585 # With 'qpic=large' the compiler will by default generate a two-instruction sequence which
586 # can be patched directly by the linker and does not require a jump to out-of-order code.
587 #
588 # Since large TOC causes perf. overhead, only pay it where we must. Currently this is
589 # for all libjvm variants (both gtest and normal) but no other binaries. So, build
590 # libjvm with -qpic=large and link with -bbigtoc.
591 JVM_PICFLAG="-qpic=large"
592 JDK_PICFLAG="-qpic"
593 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
594 PICFLAG=""
595 fi
596
597 if test "x$TOOLCHAIN_TYPE" != xxlc; then
598 JVM_PICFLAG="$PICFLAG"
599 JDK_PICFLAG="$PICFLAG"
600 fi
601
602 if test "x$OPENJDK_TARGET_OS" = xmacosx; then
603 # Linking is different on MacOSX
604 JDK_PICFLAG=''
605 if test "x$STATIC_BUILD" = xtrue; then
606 JVM_PICFLAG=""
607 fi
608 fi
609
610 # Optional POSIX functionality needed by the JVM
611 #
612 # Check if clock_gettime is available and in which library. This indicates
613 # availability of CLOCK_MONOTONIC for hotspot. But we don't need to link, so
614 # don't let it update LIBS.
615 save_LIBS="$LIBS"
616 AC_SEARCH_LIBS(clock_gettime, rt, [HAS_CLOCK_GETTIME=true], [])
617 if test "x$LIBS" = "x-lrt "; then
618 CLOCK_GETTIME_IN_LIBRT=true
619 fi
620 LIBS="$save_LIBS"
621
622 if test "x$HAS_CLOCK_GETTIME" = "xtrue"; then
623 OS_CFLAGS_JVM="$OS_CFLAGS_JVM -DSUPPORTS_CLOCK_MONOTONIC"
624 if test "x$CLOCK_GETTIME_IN_LIBRT" = "xtrue"; then
625 OS_CFLAGS_JVM="$OS_CFLAGS_JVM -DNEEDS_LIBRT"
626 fi
627 fi
628
629 # EXPORT
630 AC_SUBST(ADLC_CXXFLAG)
631 ])
632
633 ################################################################################
634 # $1 - Either BUILD or TARGET to pick the correct OS/CPU variables to check
635 # conditionals against.
636 # $2 - Optional prefix for each variable defined.
637 AC_DEFUN([FLAGS_SETUP_CFLAGS_CPU_DEP],
638 [
639 #### CPU DEFINES, these should (in theory) be independent on toolchain
640
641 # Setup target CPU
642 # Setup endianness
643 if test "x$FLAGS_CPU_ENDIAN" = xlittle; then
644 $1_DEFINES_CPU_JVM="-DVM_LITTLE_ENDIAN"
645 fi
646 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
647 # The macro _LITTLE_ENDIAN needs to be defined the same to avoid the
648 # Sun C compiler warning message: warning: macro redefined: _LITTLE_ENDIAN
649 if test "x$FLAGS_CPU_ENDIAN" = xlittle; then
650 $1_DEFINES_CPU_JDK="-D_LITTLE_ENDIAN="
651 else
652 $1_DEFINES_CPU_JDK="-D_BIG_ENDIAN="
653 fi
654 else
655 if test "x$FLAGS_CPU_ENDIAN" = xlittle; then
656 $1_DEFINES_CPU_JDK="-D_LITTLE_ENDIAN"
657 else
658 $1_DEFINES_CPU_JDK="-D_BIG_ENDIAN"
659 fi
660 fi
661
662 # setup CPU bit size
663 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -DARCH='\"$FLAGS_CPU_LEGACY\"' \
664 -D$FLAGS_CPU_LEGACY"
665
666 if test "x$FLAGS_CPU_BITS" = x64; then
667 # -D_LP64=1 is only set on linux and mac. Setting on windows causes diff in
668 # unpack200.exe.
669 if test "x$FLAGS_OS" = xlinux || test "x$FLAGS_OS" = xmacosx; then
670 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_LP64=1"
671 fi
672 if test "x$FLAGS_OS" != xsolaris && test "x$FLAGS_OS" != xaix; then
673 # Solaris does not have _LP64=1 in the old build.
674 # xlc on AIX defines _LP64=1 by default and issues a warning if we redefine it.
675 $1_DEFINES_CPU_JVM="${$1_DEFINES_CPU_JVM} -D_LP64=1"
676 fi
677 fi
678
679 # toolchain dependend, per-cpu
680 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
681 if test "x$FLAGS_CPU_ARCH" = xx86; then
682 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -DcpuIntel -Di586 -D$FLAGS_CPU_LEGACY_LIB"
683 fi
684 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
685 if test "x$FLAGS_CPU" = xx86_64; then
686 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_AMD64_ -Damd64"
687 else
688 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_X86_ -Dx86"
689 fi
690 fi
691
692 # CFLAGS PER CPU
693 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then
694 # COMMON to gcc and clang
695 if test "x$FLAGS_CPU" = xx86; then
696 # Force compatibility with i586 on 32 bit intel platforms.
697 $1_CFLAGS_CPU="-march=i586"
698 fi
699 fi
700
701 if test "x$TOOLCHAIN_TYPE" = xgcc; then
702 if test "x$FLAGS_CPU" = xarm; then
703 # -Wno-psabi to get rid of annoying "note: the mangling of 'va_list' has changed in GCC 4.4"
704 $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)\"'"
705 $1_CFLAGS_CPU_JVM="-DARM"
706 elif test "x$FLAGS_CPU" = xaarch64; then
707 if test "x$HOTSPOT_TARGET_CPU_PORT" = xarm64; then
708 $1_CFLAGS_CPU_JVM="-fsigned-char -DARM"
709 fi
710 elif test "x$FLAGS_CPU_ARCH" = xppc; then
711 $1_CFLAGS_CPU_JVM="-minsert-sched-nops=regroup_exact -mno-multiple -mno-string"
712 if test "x$FLAGS_CPU" = xppc64; then
713 # -mminimal-toc fixes `relocation truncated to fit' error for gcc 4.1.
714 # Use ppc64 instructions, but schedule for power5
715 $1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -mminimal-toc -mcpu=powerpc64 -mtune=power5"
716 elif test "x$FLAGS_CPU" = xppc64le; then
717 # Little endian machine uses ELFv2 ABI.
718 # Use Power8, this is the first CPU to support PPC64 LE with ELFv2 ABI.
719 $1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -DABI_ELFv2 -mcpu=power8 -mtune=power8"
720 fi
721 elif test "x$FLAGS_CPU" = xs390x; then
722 $1_CFLAGS_CPU="-mbackchain -march=z10"
723 fi
724
725 if test "x$FLAGS_CPU_ARCH" != xarm && test "x$FLAGS_CPU_ARCH" != xppc; then
726 # for all archs except arm and ppc, prevent gcc to omit frame pointer
727 $1_CFLAGS_CPU_JDK="${$1_CFLAGS_CPU_JDK} -fno-omit-frame-pointer"
728 fi
729
730 elif test "x$TOOLCHAIN_TYPE" = xclang; then
731 if test "x$FLAGS_OS" = xlinux; then
732 # ppc test not really needed for clang
733 if test "x$FLAGS_CPU_ARCH" != xarm && test "x$FLAGS_CPU_ARCH" != xppc; then
734 # for all archs except arm and ppc, prevent gcc to omit frame pointer
735 $1_CFLAGS_CPU_JDK="${$1_CFLAGS_CPU_JDK} -fno-omit-frame-pointer"
736 fi
737 fi
738
739 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
740 if test "x$FLAGS_CPU" = xx86_64; then
741 # NOTE: -xregs=no%frameptr is supposed to be default on x64
742 $1_CFLAGS_CPU_JDK="-xregs=no%frameptr"
743 elif test "x$FLAGS_CPU" = xsparcv9; then
744 $1_CFLAGS_CPU_JVM="-xarch=sparc"
745 $1_CFLAGS_CPU_JDK_LIBONLY="-xregs=no%appl"
746 fi
747
748 elif test "x$TOOLCHAIN_TYPE" = xxlc; then
749 if test "x$FLAGS_CPU" = xppc64; then
750 $1_CFLAGS_CPU_JVM="-qarch=ppc64"
751 fi
752
753 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
754 if test "x$FLAGS_CPU" = xx86; then
755 $1_CFLAGS_CPU_JVM="-arch:IA32"
756 elif test "x$OPENJDK_TARGET_CPU" = xx86_64; then
757 if test "x$DEBUG_LEVEL" != xrelease; then
758 # NOTE: This is probably redundant; -homeparams is default on
759 # non-release builds.
760 $1_CFLAGS_CPU_JVM="-homeparams"
761 fi
762 fi
763 fi
764
765 if test "x$TOOLCHAIN_TYPE" = xgcc; then
766 TOOLCHAIN_CHECK_COMPILER_VERSION(VERSION: 6, PREFIX: $2, IF_AT_LEAST: FLAGS_SETUP_GCC6_COMPILER_FLAGS($1))
767 $1_TOOLCHAIN_CFLAGS="${$1_GCC6_CFLAGS}"
768
769 $1_WARNING_CFLAGS_JVM="-Wno-format-zero-length -Wtype-limits -Wuninitialized"
770 fi
771
772 # EXPORT to API
773 CFLAGS_JVM_COMMON="$ALWAYS_CFLAGS_JVM $ALWAYS_DEFINES_JVM $TOOLCHAIN_CFLAGS_JVM \
774 $OS_CFLAGS $OS_CFLAGS_JVM $CFLAGS_OS_DEF_JVM $DEBUG_CFLAGS_JVM \
775 $WARNING_CFLAGS $WARNING_CFLAGS_JVM $JVM_PICFLAG"
776
777 CFLAGS_JDK_COMMON="$ALWAYS_CFLAGS_JDK $ALWAYS_DEFINES_JDK $TOOLCHAIN_CFLAGS_JDK \
778 $OS_CFLAGS $CFLAGS_OS_DEF_JDK $DEBUG_CFLAGS_JDK $DEBUG_OPTIONS_FLAGS_JDK \
779 $WARNING_CFLAGS $WARNING_CFLAGS_JDK $DEBUG_SYMBOLS_CFLAGS_JDK"
780
781 # Use ${$2EXTRA_CFLAGS} to block EXTRA_CFLAGS to be added to build flags.
782 # (Currently we don't have any OPENJDK_BUILD_EXTRA_CFLAGS, but that might
783 # change in the future.)
784
785 CFLAGS_JDK_COMMON_CONLY="$TOOLCHAIN_CFLAGS_JDK_CONLY \
786 $WARNING_CFLAGS_JDK_CONLY ${$2EXTRA_CFLAGS}"
787 CFLAGS_JDK_COMMON_CXXONLY="$ALWAYS_DEFINES_JDK_CXXONLY $TOOLCHAIN_CFLAGS_JDK_CXXONLY \
788 $WARNING_CFLAGS_JDK_CXXONLY ${$2EXTRA_CXXFLAGS}"
789
790 $1_CFLAGS_JVM="${$1_DEFINES_CPU_JVM} ${$1_CFLAGS_CPU} ${$1_CFLAGS_CPU_JVM} ${$1_TOOLCHAIN_CFLAGS} ${$1_WARNING_CFLAGS_JVM}"
791 $1_CFLAGS_JDK="${$1_DEFINES_CPU_JDK} ${$1_CFLAGS_CPU} ${$1_CFLAGS_CPU_JDK} ${$1_TOOLCHAIN_CFLAGS}"
792
793 $2JVM_CFLAGS="$CFLAGS_JVM_COMMON ${$1_CFLAGS_JVM} ${$2EXTRA_CXXFLAGS}"
794
795 $2CFLAGS_JDKEXE="$CFLAGS_JDK_COMMON $CFLAGS_JDK_COMMON_CONLY ${$1_CFLAGS_JDK}"
796 $2CXXFLAGS_JDKEXE="$CFLAGS_JDK_COMMON $CFLAGS_JDK_COMMON_CXXONLY ${$1_CFLAGS_JDK}"
797 $2CFLAGS_JDKLIB="${$2CFLAGS_JDKEXE} $JDK_PICFLAG ${$1_CFLAGS_CPU_JDK_LIBONLY}"
798 $2CXXFLAGS_JDKLIB="${$2CXXFLAGS_JDKEXE} $JDK_PICFLAG ${$1_CFLAGS_CPU_JDK_LIBONLY}"
799
800 AC_SUBST($2JVM_CFLAGS)
801 AC_SUBST($2CFLAGS_JDKLIB)
802 AC_SUBST($2CFLAGS_JDKEXE)
803 AC_SUBST($2CXXFLAGS_JDKLIB)
804 AC_SUBST($2CXXFLAGS_JDKEXE)
805 ])
806
807 # FLAGS_SETUP_GCC6_COMPILER_FLAGS([PREFIX])
808 # Arguments:
809 # $1 - Prefix for each variable defined.
810 AC_DEFUN([FLAGS_SETUP_GCC6_COMPILER_FLAGS],
811 [
812 # These flags are required for GCC 6 builds as undefined behaviour in OpenJDK code
813 # runs afoul of the more aggressive versions of these optimisations.
814 # Notably, value range propagation now assumes that the this pointer of C++
815 # member functions is non-null.
816 NO_DELETE_NULL_POINTER_CHECKS_CFLAG="-fno-delete-null-pointer-checks"
817 dnl Argument check is disabled until FLAGS_COMPILER_CHECK_ARGUMENTS handles cross-compilation
818 dnl FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_DELETE_NULL_POINTER_CHECKS_CFLAG -Werror],
819 dnl IF_FALSE: [NO_DELETE_NULL_POINTER_CHECKS_CFLAG=""])
820 NO_LIFETIME_DSE_CFLAG="-fno-lifetime-dse"
821 dnl Argument check is disabled until FLAGS_COMPILER_CHECK_ARGUMENTS handles cross-compilation
822 dnl FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_LIFETIME_DSE_CFLAG -Werror],
823 dnl IF_FALSE: [NO_LIFETIME_DSE_CFLAG=""])
824 AC_MSG_NOTICE([GCC >= 6 detected; adding ${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} and ${NO_LIFETIME_DSE_CFLAG}])
825 $1_GCC6_CFLAGS="${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} ${NO_LIFETIME_DSE_CFLAG}"
826 ])
827
828 # Documentation on common flags used for solstudio in HIGHEST.
829 #
830 # WARNING: Use of OPTIMIZATION_LEVEL=HIGHEST in your Makefile needs to be
831 # done with care, there are some assumptions below that need to
832 # be understood about the use of pointers, and IEEE behavior.
833 #
834 # -fns: Use non-standard floating point mode (not IEEE 754)
835 # -fsimple: Do some simplification of floating point arithmetic (not IEEE 754)
836 # -fsingle: Use single precision floating point with 'float'
837 # -xalias_level=basic: Assume memory references via basic pointer types do not alias
838 # (Source with excessing pointer casting and data access with mixed
839 # pointer types are not recommended)
840 # -xbuiltin=%all: Use intrinsic or inline versions for math/std functions
841 # (If you expect perfect errno behavior, do not use this)
842 # -xdepend: Loop data dependency optimizations (need -xO3 or higher)
843 # -xrestrict: Pointer parameters to functions do not overlap
844 # (Similar to -xalias_level=basic usage, but less obvious sometimes.
845 # If you pass in multiple pointers to the same data, do not use this)
846 # -xlibmil: Inline some library routines
847 # (If you expect perfect errno behavior, do not use this)
848 # -xlibmopt: Use optimized math routines (CURRENTLY DISABLED)
849 # (If you expect perfect errno behavior, do not use this)
850 # Can cause undefined external on Solaris 8 X86 on __sincos, removing for now