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:[$]1' 97 fi 98 99 AC_SUBST(C_FLAG_REORDER) 100 AC_SUBST(SET_EXECUTABLE_ORIGIN) 101 AC_SUBST(SET_SHARED_LIBRARY_ORIGIN) 102 AC_SUBST(SET_SHARED_LIBRARY_NAME) 103 AC_SUBST(SET_SHARED_LIBRARY_MAPFILE) 104 AC_SUBST(SHARED_LIBRARY_FLAGS) 105 ]) 106 107 AC_DEFUN([FLAGS_SETUP_DEBUG_SYMBOLS], 108 [ 109 # By default don't set any specific assembler debug 110 # info flags for toolchains unless we know they work. 111 # See JDK-8207057. 112 ASFLAGS_DEBUG_SYMBOLS="" 113 # Debug symbols 114 if test "x$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$TOOLCHAIN_TYPE" = xxlc; then 124 CFLAGS_DEBUG_SYMBOLS="-g" 125 elif test "x$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 solstudio) 166 DISABLE_WARNING_PREFIX="-erroff=" 167 CFLAGS_WARNINGS_ARE_ERRORS="-errtags -errwarn=%all" 168 ;; 169 gcc) 170 DISABLE_WARNING_PREFIX="-Wno-" 171 CFLAGS_WARNINGS_ARE_ERRORS="-Werror" 172 # Repeate the check for the BUILD_CC and BUILD_CXX. Need to also reset 173 # CFLAGS since any target specific flags will likely not work with the 174 # build compiler 175 CC_OLD="$CC" 176 CXX_OLD="$CXX" 177 CC="$BUILD_CC" 178 CXX="$BUILD_CXX" 179 CFLAGS_OLD="$CFLAGS" 180 CFLAGS="" 181 BUILD_CC_DISABLE_WARNING_PREFIX="-Wno-" 182 CC="$CC_OLD" 183 CXX="$CXX_OLD" 184 CFLAGS="$CFLAGS_OLD" 185 ;; 186 clang) 187 DISABLE_WARNING_PREFIX="-Wno-" 188 CFLAGS_WARNINGS_ARE_ERRORS="-Werror" 189 ;; 190 xlc) 191 DISABLE_WARNING_PREFIX="-qsuppress=" 192 CFLAGS_WARNINGS_ARE_ERRORS="-qhalt=w" 193 ;; 194 esac 195 AC_SUBST(DISABLE_WARNING_PREFIX) 196 AC_SUBST(BUILD_CC_DISABLE_WARNING_PREFIX) 197 AC_SUBST(CFLAGS_WARNINGS_ARE_ERRORS) 198 ]) 199 200 AC_DEFUN([FLAGS_SETUP_QUALITY_CHECKS], 201 [ 202 # bounds, memory and behavior checking options 203 if test "x$TOOLCHAIN_TYPE" = xgcc; then 204 case $DEBUG_LEVEL in 205 release ) 206 # no adjustment 207 ;; 208 fastdebug ) 209 # no adjustment 210 ;; 211 slowdebug ) 212 # FIXME: By adding this to C(XX)FLAGS_DEBUG_OPTIONS/JVM_CFLAGS_SYMBOLS it 213 # get's added conditionally on whether we produce debug symbols or not. 214 # This is most likely not really correct. 215 216 # Add runtime stack smashing and undefined behavior checks. 217 CFLAGS_DEBUG_OPTIONS="-fstack-protector-all --param ssp-buffer-size=1" 218 CXXFLAGS_DEBUG_OPTIONS="-fstack-protector-all --param ssp-buffer-size=1" 219 220 JVM_CFLAGS_SYMBOLS="$JVM_CFLAGS_SYMBOLS -fstack-protector-all --param ssp-buffer-size=1" 221 ;; 222 esac 223 fi 224 ]) 225 226 AC_DEFUN([FLAGS_SETUP_OPTIMIZATION], 227 [ 228 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then 229 CC_HIGHEST="-fns -fsimple -fsingle -xbuiltin=%all -xdepend -xrestrict -xlibmil" 230 231 C_O_FLAG_HIGHEST_JVM="-xO4" 232 C_O_FLAG_DEBUG_JVM="" 233 C_O_FLAG_SIZE="" 234 C_O_FLAG_DEBUG="" 235 C_O_FLAG_NONE="" 236 if test "x$OPENJDK_TARGET_CPU_ARCH" = "xx86"; then 237 C_O_FLAG_HIGHEST="-xO4 -Wu,-O4~yz $CC_HIGHEST" 238 C_O_FLAG_HI="-xO4 -Wu,-O4~yz" 239 C_O_FLAG_NORM="-xO2 -Wu,-O2~yz" 240 elif test "x$OPENJDK_TARGET_CPU_ARCH" = "xsparc"; then 241 C_O_FLAG_HIGHEST="-xO4 -Wc,-Qrm-s -Wc,-Qiselect-T0 \ 242 -xprefetch=auto,explicit $CC_HIGHEST" 243 C_O_FLAG_HI="-xO4 -Wc,-Qrm-s -Wc,-Qiselect-T0" 244 C_O_FLAG_NORM="-xO2 -Wc,-Qrm-s -Wc,-Qiselect-T0" 245 fi 246 elif test "x$TOOLCHAIN_TYPE" = xgcc; then 247 C_O_FLAG_HIGHEST_JVM="-O3" 248 C_O_FLAG_HIGHEST="-O3" 249 C_O_FLAG_HI="-O3" 250 C_O_FLAG_NORM="-O2" 251 C_O_FLAG_SIZE="-Os" 252 C_O_FLAG_DEBUG="-O0" 253 C_O_FLAG_DEBUG_JVM="-O0" 254 C_O_FLAG_NONE="-O0" 255 elif test "x$TOOLCHAIN_TYPE" = xclang; then 256 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 257 # On MacOSX we optimize for size, something 258 # we should do for all platforms? 259 C_O_FLAG_HIGHEST_JVM="-Os" 260 C_O_FLAG_HIGHEST="-Os" 261 C_O_FLAG_HI="-Os" 262 C_O_FLAG_NORM="-Os" 263 C_O_FLAG_DEBUG_JVM="" 264 else 265 C_O_FLAG_HIGHEST_JVM="-O3" 266 C_O_FLAG_HIGHEST="-O3" 267 C_O_FLAG_HI="-O3" 268 C_O_FLAG_NORM="-O2" 269 C_O_FLAG_DEBUG_JVM="-O0" 270 fi 271 C_O_FLAG_SIZE="-Os" 272 C_O_FLAG_DEBUG="-O0" 273 C_O_FLAG_NONE="-O0" 274 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 275 C_O_FLAG_HIGHEST_JVM="-O3 -qhot=level=1 -qinline -qinlglue" 276 C_O_FLAG_HIGHEST="-O3 -qhot=level=1 -qinline -qinlglue" 277 C_O_FLAG_HI="-O3 -qinline -qinlglue" 278 C_O_FLAG_NORM="-O2" 279 C_O_FLAG_DEBUG="-qnoopt" 280 # FIXME: Value below not verified. 281 C_O_FLAG_DEBUG_JVM="" 282 C_O_FLAG_NONE="-qnoopt" 283 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 284 C_O_FLAG_HIGHEST_JVM="-O2 -Oy-" 285 C_O_FLAG_HIGHEST="-O2" 286 C_O_FLAG_HI="-O1" 287 C_O_FLAG_NORM="-O1" 288 C_O_FLAG_DEBUG="-Od" 289 C_O_FLAG_DEBUG_JVM="" 290 C_O_FLAG_NONE="-Od" 291 C_O_FLAG_SIZE="-Os" 292 fi 293 294 # Now copy to C++ flags 295 CXX_O_FLAG_HIGHEST_JVM="$C_O_FLAG_HIGHEST_JVM" 296 CXX_O_FLAG_HIGHEST="$C_O_FLAG_HIGHEST" 297 CXX_O_FLAG_HI="$C_O_FLAG_HI" 298 CXX_O_FLAG_NORM="$C_O_FLAG_NORM" 299 CXX_O_FLAG_DEBUG="$C_O_FLAG_DEBUG" 300 CXX_O_FLAG_DEBUG_JVM="$C_O_FLAG_DEBUG_JVM" 301 CXX_O_FLAG_NONE="$C_O_FLAG_NONE" 302 CXX_O_FLAG_SIZE="$C_O_FLAG_SIZE" 303 304 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then 305 # In solstudio, also add this to C (but not C++) flags... 306 C_O_FLAG_HIGHEST="$C_O_FLAG_HIGHEST -xalias_level=basic" 307 fi 308 309 # Adjust optimization flags according to debug level. 310 case $DEBUG_LEVEL in 311 release ) 312 # no adjustment 313 ;; 314 fastdebug ) 315 # Not quite so much optimization 316 C_O_FLAG_HI="$C_O_FLAG_NORM" 317 CXX_O_FLAG_HI="$CXX_O_FLAG_NORM" 318 ;; 319 slowdebug ) 320 # Disable optimization 321 C_O_FLAG_HIGHEST_JVM="$C_O_FLAG_DEBUG_JVM" 322 C_O_FLAG_HIGHEST="$C_O_FLAG_DEBUG" 323 C_O_FLAG_HI="$C_O_FLAG_DEBUG" 324 C_O_FLAG_NORM="$C_O_FLAG_DEBUG" 325 C_O_FLAG_SIZE="$C_O_FLAG_DEBUG" 326 CXX_O_FLAG_HIGHEST_JVM="$CXX_O_FLAG_DEBUG_JVM" 327 CXX_O_FLAG_HIGHEST="$CXX_O_FLAG_DEBUG" 328 CXX_O_FLAG_HI="$CXX_O_FLAG_DEBUG" 329 CXX_O_FLAG_NORM="$CXX_O_FLAG_DEBUG" 330 CXX_O_FLAG_SIZE="$CXX_O_FLAG_DEBUG" 331 ;; 332 esac 333 334 AC_SUBST(C_O_FLAG_HIGHEST_JVM) 335 AC_SUBST(C_O_FLAG_HIGHEST) 336 AC_SUBST(C_O_FLAG_HI) 337 AC_SUBST(C_O_FLAG_NORM) 338 AC_SUBST(C_O_FLAG_NONE) 339 AC_SUBST(C_O_FLAG_SIZE) 340 AC_SUBST(CXX_O_FLAG_HIGHEST_JVM) 341 AC_SUBST(CXX_O_FLAG_HIGHEST) 342 AC_SUBST(CXX_O_FLAG_HI) 343 AC_SUBST(CXX_O_FLAG_NORM) 344 AC_SUBST(CXX_O_FLAG_NONE) 345 AC_SUBST(CXX_O_FLAG_SIZE) 346 ]) 347 348 AC_DEFUN([FLAGS_SETUP_CFLAGS], 349 [ 350 ### CFLAGS 351 352 FLAGS_SETUP_CFLAGS_HELPER 353 354 FLAGS_OS=$OPENJDK_TARGET_OS 355 FLAGS_OS_TYPE=$OPENJDK_TARGET_OS_TYPE 356 FLAGS_CPU=$OPENJDK_TARGET_CPU 357 FLAGS_CPU_ARCH=$OPENJDK_TARGET_CPU_ARCH 358 FLAGS_CPU_BITS=$OPENJDK_TARGET_CPU_BITS 359 FLAGS_CPU_ENDIAN=$OPENJDK_TARGET_CPU_ENDIAN 360 FLAGS_CPU_LEGACY=$OPENJDK_TARGET_CPU_LEGACY 361 FLAGS_CPU_LEGACY_LIB=$OPENJDK_TARGET_CPU_LEGACY_LIB 362 363 FLAGS_SETUP_CFLAGS_CPU_DEP([TARGET]) 364 365 FLAGS_OS=$OPENJDK_BUILD_OS 366 FLAGS_OS_TYPE=$OPENJDK_BUILD_OS_TYPE 367 FLAGS_CPU=$OPENJDK_BUILD_CPU 368 FLAGS_CPU_ARCH=$OPENJDK_BUILD_CPU_ARCH 369 FLAGS_CPU_BITS=$OPENJDK_BUILD_CPU_BITS 370 FLAGS_CPU_ENDIAN=$OPENJDK_BUILD_CPU_ENDIAN 371 FLAGS_CPU_LEGACY=$OPENJDK_BUILD_CPU_LEGACY 372 FLAGS_CPU_LEGACY_LIB=$OPENJDK_BUILD_CPU_LEGACY_LIB 373 374 FLAGS_SETUP_CFLAGS_CPU_DEP([BUILD], [OPENJDK_BUILD_]) 375 376 # Tests are only ever compiled for TARGET 377 CFLAGS_TESTLIB="$CFLAGS_JDKLIB" 378 CXXFLAGS_TESTLIB="$CXXFLAGS_JDKLIB" 379 CFLAGS_TESTEXE="$CFLAGS_JDKEXE" 380 CXXFLAGS_TESTEXE="$CXXFLAGS_JDKEXE" 381 382 AC_SUBST(CFLAGS_TESTLIB) 383 AC_SUBST(CFLAGS_TESTEXE) 384 AC_SUBST(CXXFLAGS_TESTLIB) 385 AC_SUBST(CXXFLAGS_TESTEXE) 386 ]) 387 388 ################################################################################ 389 # platform independent 390 AC_DEFUN([FLAGS_SETUP_CFLAGS_HELPER], 391 [ 392 #### OS DEFINES, these should be independent on toolchain 393 if test "x$OPENJDK_TARGET_OS" = xlinux; then 394 CFLAGS_OS_DEF_JVM="-DLINUX" 395 CFLAGS_OS_DEF_JDK="-D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE" 396 elif test "x$OPENJDK_TARGET_OS" = xsolaris; then 397 CFLAGS_OS_DEF_JVM="-DSOLARIS" 398 CFLAGS_OS_DEF_JDK="-D__solaris__" 399 elif test "x$OPENJDK_TARGET_OS" = xmacosx; then 400 CFLAGS_OS_DEF_JVM="-D_ALLBSD_SOURCE -D_DARWIN_C_SOURCE -D_XOPEN_SOURCE" 401 CFLAGS_OS_DEF_JDK="-D_ALLBSD_SOURCE -D_DARWIN_UNLIMITED_SELECT" 402 elif test "x$OPENJDK_TARGET_OS" = xaix; then 403 CFLAGS_OS_DEF_JVM="-DAIX" 404 elif test "x$OPENJDK_TARGET_OS" = xbsd; then 405 CFLAGS_OS_DEF_JDK="-D_ALLBSD_SOURCE" 406 elif test "x$OPENJDK_TARGET_OS" = xwindows; then 407 CFLAGS_OS_DEF_JVM="-D_WINDOWS -DWIN32 -D_JNI_IMPLEMENTATION_" 408 fi 409 410 CFLAGS_OS_DEF_JDK="$CFLAGS_OS_DEF_JDK -D$OPENJDK_TARGET_OS_UPPERCASE" 411 412 #### GLOBAL DEFINES 413 # Set some common defines. These works for all compilers, but assume 414 # -D is universally accepted. 415 416 # Always enable optional macros for VM. 417 ALWAYS_CFLAGS_JVM="-D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS" 418 419 # Setup some hard coded includes 420 ALWAYS_CFLAGS_JDK=" \ 421 -I\$(SUPPORT_OUTPUTDIR)/modules_include/java.base \ 422 -I\$(SUPPORT_OUTPUTDIR)/modules_include/java.base/\$(OPENJDK_TARGET_OS_INCLUDE_SUBDIR) \ 423 -I${TOPDIR}/src/java.base/share/native/libjava \ 424 -I${TOPDIR}/src/java.base/$OPENJDK_TARGET_OS_TYPE/native/libjava \ 425 -I${TOPDIR}/src/hotspot/share/include \ 426 -I${TOPDIR}/src/hotspot/os/${HOTSPOT_TARGET_OS_TYPE}/include" 427 428 ############################################################################### 429 430 # Adjust flags according to debug level. 431 # Setup debug/release defines 432 if test "x$DEBUG_LEVEL" = xrelease; then 433 DEBUG_CFLAGS_JDK="-DNDEBUG" 434 if test "x$OPENJDK_TARGET_OS" = xsolaris; then 435 DEBUG_CFLAGS_JDK="$DEBUG_CFLAGS_JDK -DTRIMMED" 436 fi 437 else 438 DEBUG_CFLAGS_JDK="-DDEBUG" 439 440 if test "x$TOOLCHAIN_TYPE" = xxlc; then 441 # We need '-qminimaltoc' or '-qpic=large -bbigtoc' if the TOC overflows. 442 # Hotspot now overflows its 64K TOC (currently only for debug), 443 # so for debug we build with '-qpic=large -bbigtoc'. 444 DEBUG_CFLAGS_JVM="-qpic=large" 445 fi 446 fi 447 448 if test "x$DEBUG_LEVEL" != xrelease; then 449 DEBUG_OPTIONS_FLAGS_JDK="$CFLAGS_DEBUG_OPTIONS" 450 DEBUG_SYMBOLS_CFLAGS_JDK="$CFLAGS_DEBUG_SYMBOLS" 451 fi 452 453 #### TOOLCHAIN DEFINES 454 455 if test "x$TOOLCHAIN_TYPE" = xgcc; then 456 ALWAYS_DEFINES_JVM="-D_GNU_SOURCE -D_REENTRANT" 457 elif test "x$TOOLCHAIN_TYPE" = xclang; then 458 ALWAYS_DEFINES_JVM="-D_GNU_SOURCE" 459 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 460 ALWAYS_DEFINES_JVM="-DSPARC_WORKS -D_Crun_inline_placement" 461 ALWAYS_DEFINES_JDK="-DTRACING -DMACRO_MEMSYS_OPS -DBREAKPTS" 462 ALWAYS_DEFINES_JDK_CXXONLY="-DCC_NOEX" 463 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 464 ALWAYS_DEFINES_JVM="-D_REENTRANT" 465 ALWAYS_DEFINES_JDK="-D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE -DSTDC" 466 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 467 ALWAYS_DEFINES_JDK="-DWIN32_LEAN_AND_MEAN -D_CRT_SECURE_NO_DEPRECATE \ 468 -D_CRT_NONSTDC_NO_DEPRECATE -DWIN32 -DIAL" 469 ALWAYS_DEFINES_JVM="-DNOMINMAX -DWIN32_LEAN_AND_MEAN" 470 fi 471 472 ############################################################################### 473 # 474 # 475 # CFLAGS BASIC 476 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 477 # COMMON to gcc and clang 478 TOOLCHAIN_CFLAGS_JVM="-pipe -fno-rtti -fno-exceptions \ 479 -fvisibility=hidden -fno-strict-aliasing -fno-omit-frame-pointer" 480 fi 481 482 if test "x$TOOLCHAIN_TYPE" = xgcc; then 483 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -fcheck-new" 484 TOOLCHAIN_CFLAGS_JDK="-pipe" 485 TOOLCHAIN_CFLAGS_JDK_CONLY="-fno-strict-aliasing" # technically NOT for CXX (but since this gives *worse* performance, use no-strict-aliasing everywhere!) 486 487 CXXSTD_CXXFLAG="-std=gnu++98" 488 FLAGS_CXX_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$CXXSTD_CXXFLAG -Werror], 489 IF_FALSE: [CXXSTD_CXXFLAG=""]) 490 TOOLCHAIN_CFLAGS_JDK_CXXONLY="$CXXSTD_CXXFLAG" 491 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM $CXXSTD_CXXFLAG" 492 ADLC_CXXFLAG="$CXXSTD_CXXFLAG" 493 494 495 elif test "x$TOOLCHAIN_TYPE" = xclang; then 496 # Restrict the debug information created by Clang to avoid 497 # too big object files and speed the build up a little bit 498 # (see http://llvm.org/bugs/show_bug.cgi?id=7554) 499 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -flimit-debug-info" 500 501 # In principle the stack alignment below is cpu- and ABI-dependent and 502 # should agree with values of StackAlignmentInBytes in various 503 # src/hotspot/cpu/*/globalDefinitions_*.hpp files, but this value currently 504 # works for all platforms. 505 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -mno-omit-leaf-frame-pointer -mstack-alignment=16" 506 507 if test "x$OPENJDK_TARGET_OS" = xlinux; then 508 TOOLCHAIN_CFLAGS_JDK="-pipe" 509 TOOLCHAIN_CFLAGS_JDK_CONLY="-fno-strict-aliasing" # technically NOT for CXX 510 fi 511 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 512 TOOLCHAIN_CFLAGS_JDK="-mt" 513 TOOLCHAIN_CFLAGS_JDK_CONLY="-xc99=%none -xCC -Xa -v -W0,-noglobal" # C only 514 TOOLCHAIN_CFLAGS_JDK_CXXONLY="-features=no%except -norunpath -xnolib" # CXX only 515 TOOLCHAIN_CFLAGS_JVM="-template=no%extdef -features=no%split_init \ 516 -library=stlport4 -mt -features=no%except" 517 if test "x$DEBUG_LEVEL" = xslowdebug; then 518 # Previously -g was used instead of -g0 for slowdebug; this is equivalent 519 # to setting +d. 520 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM +d" 521 fi 522 523 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 524 TOOLCHAIN_CFLAGS_JDK="-qchars=signed -qfullpath -qsaveopt" # add on both CFLAGS 525 TOOLCHAIN_CFLAGS_JVM="-qtune=balanced \ 526 -qalias=noansi -qstrict -qtls=default -qlanglvl=c99vla \ 527 -qlanglvl=noredefmac -qnortti -qnoeh -qignerrno" 528 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 529 TOOLCHAIN_CFLAGS_JVM="-nologo -MD -MP" 530 TOOLCHAIN_CFLAGS_JDK="-nologo -MD -Zc:wchar_t-" 531 fi 532 533 # CFLAGS WARNINGS STUFF 534 # Set JVM_CFLAGS warning handling 535 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 536 # COMMON to gcc and clang 537 WARNING_CFLAGS_JVM="-Wpointer-arith -Wsign-compare -Wunused-function" 538 if ! HOTSPOT_CHECK_JVM_VARIANT(zero); then 539 # Non-zero builds have stricter warnings 540 WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wundef -Wformat=2" 541 fi 542 543 fi 544 if test "x$TOOLCHAIN_TYPE" = xgcc; then 545 WARNING_CFLAGS_JDK="-Wall -Wextra -Wno-unused -Wno-unused-parameter -Wformat=2" 546 WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wunused-value -Woverloaded-virtual -Wreorder" 547 548 if ! HOTSPOT_CHECK_JVM_VARIANT(zero); then 549 # Non-zero builds have stricter warnings 550 WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wreturn-type" 551 fi 552 elif test "x$TOOLCHAIN_TYPE" = xclang; then 553 WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wno-deprecated -Wreorder" 554 if test "x$OPENJDK_TARGET_OS" = xlinux; then 555 WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wno-sometimes-uninitialized" 556 WARNING_CFLAGS_JDK="-Wall -Wextra -Wno-unused -Wno-unused-parameter -Wformat=2" 557 fi 558 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 559 WARNING_CFLAGS_JDK_CONLY="-errshort=tags" 560 WARNING_CFLAGS_JDK_CXXONLY="+w" 561 WARNING_CFLAGS_JDK="-errtags=yes -errfmt" 562 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 563 WARNING_CFLAGS="-W3" 564 WARNING_CFLAGS_JDK="-wd4800" 565 WARNING_CFLAGS_JVM="-wd4800" 566 fi 567 568 # Set some additional per-OS defines. 569 570 # Additional macosx handling 571 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 572 OS_CFLAGS="-DMAC_OS_X_VERSION_MIN_REQUIRED=$MACOSX_VERSION_MIN_NODOTS \ 573 -mmacosx-version-min=$MACOSX_VERSION_MIN" 574 575 if test -n "$MACOSX_VERSION_MAX"; then 576 OS_CFLAGS="$OS_CFLAGS \ 577 -DMAC_OS_X_VERSION_MAX_ALLOWED=$MACOSX_VERSION_MAX_NODOTS" 578 fi 579 fi 580 581 # Where does this really belong?? 582 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 583 PICFLAG="-fPIC" 584 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 585 PICFLAG="-KPIC" 586 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 587 # '-qpic' defaults to 'qpic=small'. This means that the compiler generates only 588 # one instruction for accessing the TOC. If the TOC grows larger than 64K, the linker 589 # will have to patch this single instruction with a call to some out-of-order code which 590 # does the load from the TOC. This is of course slower, and we also would have 591 # to use '-bbigtoc' for linking anyway so we could also change the PICFLAG to 'qpic=large'. 592 # With 'qpic=large' the compiler will by default generate a two-instruction sequence which 593 # can be patched directly by the linker and does not require a jump to out-of-order code. 594 # 595 # Since large TOC causes perf. overhead, only pay it where we must. Currently this is 596 # for all libjvm variants (both gtest and normal) but no other binaries. So, build 597 # libjvm with -qpic=large and link with -bbigtoc. 598 JVM_PICFLAG="-qpic=large" 599 JDK_PICFLAG="-qpic" 600 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 601 PICFLAG="" 602 fi 603 604 if test "x$TOOLCHAIN_TYPE" != xxlc; then 605 JVM_PICFLAG="$PICFLAG" 606 JDK_PICFLAG="$PICFLAG" 607 fi 608 609 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 610 # Linking is different on MacOSX 611 JDK_PICFLAG='' 612 if test "x$STATIC_BUILD" = xtrue; then 613 JVM_PICFLAG="" 614 fi 615 fi 616 617 # Optional POSIX functionality needed by the JVM 618 # 619 # Check if clock_gettime is available and in which library. This indicates 620 # availability of CLOCK_MONOTONIC for hotspot. But we don't need to link, so 621 # don't let it update LIBS. 622 save_LIBS="$LIBS" 623 AC_SEARCH_LIBS(clock_gettime, rt, [HAS_CLOCK_GETTIME=true], []) 624 if test "x$LIBS" = "x-lrt "; then 625 CLOCK_GETTIME_IN_LIBRT=true 626 fi 627 LIBS="$save_LIBS" 628 629 if test "x$HAS_CLOCK_GETTIME" = "xtrue"; then 630 OS_CFLAGS_JVM="$OS_CFLAGS_JVM -DSUPPORTS_CLOCK_MONOTONIC" 631 if test "x$CLOCK_GETTIME_IN_LIBRT" = "xtrue"; then 632 OS_CFLAGS_JVM="$OS_CFLAGS_JVM -DNEEDS_LIBRT" 633 fi 634 fi 635 636 # EXPORT 637 AC_SUBST(ADLC_CXXFLAG) 638 ]) 639 640 ################################################################################ 641 # $1 - Either BUILD or TARGET to pick the correct OS/CPU variables to check 642 # conditionals against. 643 # $2 - Optional prefix for each variable defined. 644 AC_DEFUN([FLAGS_SETUP_CFLAGS_CPU_DEP], 645 [ 646 #### CPU DEFINES, these should (in theory) be independent on toolchain 647 648 # Setup target CPU 649 # Setup endianness 650 if test "x$FLAGS_CPU_ENDIAN" = xlittle; then 651 $1_DEFINES_CPU_JVM="-DVM_LITTLE_ENDIAN" 652 fi 653 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then 654 # The macro _LITTLE_ENDIAN needs to be defined the same to avoid the 655 # Sun C compiler warning message: warning: macro redefined: _LITTLE_ENDIAN 656 if test "x$FLAGS_CPU_ENDIAN" = xlittle; then 657 $1_DEFINES_CPU_JDK="-D_LITTLE_ENDIAN=" 658 else 659 $1_DEFINES_CPU_JDK="-D_BIG_ENDIAN=" 660 fi 661 else 662 if test "x$FLAGS_CPU_ENDIAN" = xlittle; then 663 $1_DEFINES_CPU_JDK="-D_LITTLE_ENDIAN" 664 else 665 $1_DEFINES_CPU_JDK="-D_BIG_ENDIAN" 666 fi 667 fi 668 669 # setup CPU bit size 670 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -DARCH='\"$FLAGS_CPU_LEGACY\"' \ 671 -D$FLAGS_CPU_LEGACY" 672 673 if test "x$FLAGS_CPU_BITS" = x64; then 674 # -D_LP64=1 is only set on linux and mac. Setting on windows causes diff in 675 # unpack200.exe. 676 if test "x$FLAGS_OS" = xlinux || test "x$FLAGS_OS" = xmacosx; then 677 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_LP64=1" 678 fi 679 if test "x$FLAGS_OS" != xsolaris && test "x$FLAGS_OS" != xaix; then 680 # Solaris does not have _LP64=1 in the old build. 681 # xlc on AIX defines _LP64=1 by default and issues a warning if we redefine it. 682 $1_DEFINES_CPU_JVM="${$1_DEFINES_CPU_JVM} -D_LP64=1" 683 fi 684 fi 685 686 # toolchain dependend, per-cpu 687 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then 688 if test "x$FLAGS_CPU_ARCH" = xx86; then 689 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -DcpuIntel -Di586 -D$FLAGS_CPU_LEGACY_LIB" 690 fi 691 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 692 if test "x$FLAGS_CPU" = xx86_64; then 693 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_AMD64_ -Damd64" 694 else 695 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_X86_ -Dx86" 696 fi 697 fi 698 699 # CFLAGS PER CPU 700 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 701 # COMMON to gcc and clang 702 if test "x$FLAGS_CPU" = xx86; then 703 # Force compatibility with i586 on 32 bit intel platforms. 704 $1_CFLAGS_CPU="-march=i586" 705 fi 706 fi 707 708 if test "x$TOOLCHAIN_TYPE" = xgcc; then 709 if test "x$FLAGS_CPU" = xarm; then 710 # -Wno-psabi to get rid of annoying "note: the mangling of 'va_list' has changed in GCC 4.4" 711 $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)\"'" 712 $1_CFLAGS_CPU_JVM="-DARM" 713 elif test "x$FLAGS_CPU" = xaarch64; then 714 if test "x$HOTSPOT_TARGET_CPU_PORT" = xarm64; then 715 $1_CFLAGS_CPU_JVM="-fsigned-char -DARM" 716 fi 717 elif test "x$FLAGS_CPU_ARCH" = xppc; then 718 $1_CFLAGS_CPU_JVM="-minsert-sched-nops=regroup_exact -mno-multiple -mno-string" 719 if test "x$FLAGS_CPU" = xppc64; then 720 # -mminimal-toc fixes `relocation truncated to fit' error for gcc 4.1. 721 # Use ppc64 instructions, but schedule for power5 722 $1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -mminimal-toc -mcpu=powerpc64 -mtune=power5" 723 elif test "x$FLAGS_CPU" = xppc64le; then 724 # Little endian machine uses ELFv2 ABI. 725 # Use Power8, this is the first CPU to support PPC64 LE with ELFv2 ABI. 726 $1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -DABI_ELFv2 -mcpu=power8 -mtune=power8" 727 fi 728 elif test "x$FLAGS_CPU" = xs390x; then 729 $1_CFLAGS_CPU="-mbackchain -march=z10" 730 fi 731 732 if test "x$FLAGS_CPU_ARCH" != xarm && test "x$FLAGS_CPU_ARCH" != xppc; then 733 # for all archs except arm and ppc, prevent gcc to omit frame pointer 734 $1_CFLAGS_CPU_JDK="${$1_CFLAGS_CPU_JDK} -fno-omit-frame-pointer" 735 fi 736 737 elif test "x$TOOLCHAIN_TYPE" = xclang; then 738 if test "x$FLAGS_OS" = xlinux; then 739 # ppc test not really needed for clang 740 if test "x$FLAGS_CPU_ARCH" != xarm && test "x$FLAGS_CPU_ARCH" != xppc; then 741 # for all archs except arm and ppc, prevent gcc to omit frame pointer 742 $1_CFLAGS_CPU_JDK="${$1_CFLAGS_CPU_JDK} -fno-omit-frame-pointer" 743 fi 744 fi 745 746 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 747 if test "x$FLAGS_CPU" = xx86_64; then 748 # NOTE: -xregs=no%frameptr is supposed to be default on x64 749 $1_CFLAGS_CPU_JDK="-xregs=no%frameptr" 750 elif test "x$FLAGS_CPU" = xsparcv9; then 751 $1_CFLAGS_CPU_JVM="-xarch=sparc" 752 $1_CFLAGS_CPU_JDK_LIBONLY="-xregs=no%appl" 753 fi 754 755 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 756 if test "x$FLAGS_CPU" = xppc64; then 757 $1_CFLAGS_CPU_JVM="-qarch=ppc64" 758 fi 759 760 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 761 if test "x$FLAGS_CPU" = xx86; then 762 $1_CFLAGS_CPU_JVM="-arch:IA32" 763 elif test "x$OPENJDK_TARGET_CPU" = xx86_64; then 764 if test "x$DEBUG_LEVEL" != xrelease; then 765 # NOTE: This is probably redundant; -homeparams is default on 766 # non-release builds. 767 $1_CFLAGS_CPU_JVM="-homeparams" 768 fi 769 fi 770 fi 771 772 if test "x$TOOLCHAIN_TYPE" = xgcc; then 773 TOOLCHAIN_CHECK_COMPILER_VERSION(VERSION: 6, PREFIX: $2, IF_AT_LEAST: FLAGS_SETUP_GCC6_COMPILER_FLAGS($1)) 774 $1_TOOLCHAIN_CFLAGS="${$1_GCC6_CFLAGS}" 775 776 $1_WARNING_CFLAGS_JVM="-Wno-format-zero-length -Wtype-limits -Wuninitialized" 777 fi 778 779 # EXPORT to API 780 CFLAGS_JVM_COMMON="$ALWAYS_CFLAGS_JVM $ALWAYS_DEFINES_JVM $TOOLCHAIN_CFLAGS_JVM \ 781 $OS_CFLAGS $OS_CFLAGS_JVM $CFLAGS_OS_DEF_JVM $DEBUG_CFLAGS_JVM \ 782 $WARNING_CFLAGS $WARNING_CFLAGS_JVM $JVM_PICFLAG" 783 784 CFLAGS_JDK_COMMON="$ALWAYS_CFLAGS_JDK $ALWAYS_DEFINES_JDK $TOOLCHAIN_CFLAGS_JDK \ 785 $OS_CFLAGS $CFLAGS_OS_DEF_JDK $DEBUG_CFLAGS_JDK $DEBUG_OPTIONS_FLAGS_JDK \ 786 $WARNING_CFLAGS $WARNING_CFLAGS_JDK $DEBUG_SYMBOLS_CFLAGS_JDK" 787 788 # Use ${$2EXTRA_CFLAGS} to block EXTRA_CFLAGS to be added to build flags. 789 # (Currently we don't have any OPENJDK_BUILD_EXTRA_CFLAGS, but that might 790 # change in the future.) 791 792 CFLAGS_JDK_COMMON_CONLY="$TOOLCHAIN_CFLAGS_JDK_CONLY \ 793 $WARNING_CFLAGS_JDK_CONLY ${$2EXTRA_CFLAGS}" 794 CFLAGS_JDK_COMMON_CXXONLY="$ALWAYS_DEFINES_JDK_CXXONLY $TOOLCHAIN_CFLAGS_JDK_CXXONLY \ 795 $WARNING_CFLAGS_JDK_CXXONLY ${$2EXTRA_CXXFLAGS}" 796 797 $1_CFLAGS_JVM="${$1_DEFINES_CPU_JVM} ${$1_CFLAGS_CPU} ${$1_CFLAGS_CPU_JVM} ${$1_TOOLCHAIN_CFLAGS} ${$1_WARNING_CFLAGS_JVM}" 798 $1_CFLAGS_JDK="${$1_DEFINES_CPU_JDK} ${$1_CFLAGS_CPU} ${$1_CFLAGS_CPU_JDK} ${$1_TOOLCHAIN_CFLAGS}" 799 800 $2JVM_CFLAGS="$CFLAGS_JVM_COMMON ${$1_CFLAGS_JVM} ${$2EXTRA_CXXFLAGS}" 801 802 $2CFLAGS_JDKEXE="$CFLAGS_JDK_COMMON $CFLAGS_JDK_COMMON_CONLY ${$1_CFLAGS_JDK}" 803 $2CXXFLAGS_JDKEXE="$CFLAGS_JDK_COMMON $CFLAGS_JDK_COMMON_CXXONLY ${$1_CFLAGS_JDK}" 804 $2CFLAGS_JDKLIB="${$2CFLAGS_JDKEXE} $JDK_PICFLAG ${$1_CFLAGS_CPU_JDK_LIBONLY}" 805 $2CXXFLAGS_JDKLIB="${$2CXXFLAGS_JDKEXE} $JDK_PICFLAG ${$1_CFLAGS_CPU_JDK_LIBONLY}" 806 807 AC_SUBST($2JVM_CFLAGS) 808 AC_SUBST($2CFLAGS_JDKLIB) 809 AC_SUBST($2CFLAGS_JDKEXE) 810 AC_SUBST($2CXXFLAGS_JDKLIB) 811 AC_SUBST($2CXXFLAGS_JDKEXE) 812 ]) 813 814 # FLAGS_SETUP_GCC6_COMPILER_FLAGS([PREFIX]) 815 # Arguments: 816 # $1 - Prefix for each variable defined. 817 AC_DEFUN([FLAGS_SETUP_GCC6_COMPILER_FLAGS], 818 [ 819 # These flags are required for GCC 6 builds as undefined behaviour in OpenJDK code 820 # runs afoul of the more aggressive versions of these optimisations. 821 # Notably, value range propagation now assumes that the this pointer of C++ 822 # member functions is non-null. 823 NO_DELETE_NULL_POINTER_CHECKS_CFLAG="-fno-delete-null-pointer-checks" 824 dnl Argument check is disabled until FLAGS_COMPILER_CHECK_ARGUMENTS handles cross-compilation 825 dnl FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_DELETE_NULL_POINTER_CHECKS_CFLAG -Werror], 826 dnl IF_FALSE: [NO_DELETE_NULL_POINTER_CHECKS_CFLAG=""]) 827 NO_LIFETIME_DSE_CFLAG="-fno-lifetime-dse" 828 dnl Argument check is disabled until FLAGS_COMPILER_CHECK_ARGUMENTS handles cross-compilation 829 dnl FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_LIFETIME_DSE_CFLAG -Werror], 830 dnl IF_FALSE: [NO_LIFETIME_DSE_CFLAG=""]) 831 AC_MSG_NOTICE([GCC >= 6 detected; adding ${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} and ${NO_LIFETIME_DSE_CFLAG}]) 832 $1_GCC6_CFLAGS="${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} ${NO_LIFETIME_DSE_CFLAG}" 833 ]) 834 835 # Documentation on common flags used for solstudio in HIGHEST. 836 # 837 # WARNING: Use of OPTIMIZATION_LEVEL=HIGHEST in your Makefile needs to be 838 # done with care, there are some assumptions below that need to 839 # be understood about the use of pointers, and IEEE behavior. 840 # 841 # -fns: Use non-standard floating point mode (not IEEE 754) 842 # -fsimple: Do some simplification of floating point arithmetic (not IEEE 754) 843 # -fsingle: Use single precision floating point with 'float' 844 # -xalias_level=basic: Assume memory references via basic pointer types do not alias 845 # (Source with excessing pointer casting and data access with mixed 846 # pointer types are not recommended) 847 # -xbuiltin=%all: Use intrinsic or inline versions for math/std functions 848 # (If you expect perfect errno behavior, do not use this) 849 # -xdepend: Loop data dependency optimizations (need -xO3 or higher) 850 # -xrestrict: Pointer parameters to functions do not overlap 851 # (Similar to -xalias_level=basic usage, but less obvious sometimes. 852 # If you pass in multiple pointers to the same data, do not use this) 853 # -xlibmil: Inline some library routines 854 # (If you expect perfect errno behavior, do not use this) 855 # -xlibmopt: Use optimized math routines (CURRENTLY DISABLED) 856 # (If you expect perfect errno behavior, do not use this) 857 # Can cause undefined external on Solaris 8 X86 on __sincos, removing for now