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 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 WARNINGS_ENABLE_ADDITIONAL_CXX="-Woverloaded-virtual -Wreorder" 188 WARNINGS_ENABLE_ALL_CFLAGS="-Wall -Wextra -Wformat=2 $WARNINGS_ENABLE_ADDITIONAL" 189 WARNINGS_ENABLE_ALL_CXXFLAGS="$WARNINGS_ENABLE_ALL_CFLAGS $WARNINGS_ENABLE_ADDITIONAL_CXX" 190 191 DISABLED_WARNINGS="unused-parameter unused" 192 193 # Repeate the check for the BUILD_CC and BUILD_CXX. Need to also reset 194 # CFLAGS since any target specific flags will likely not work with the 195 # build compiler 196 CC_OLD="$CC" 197 CXX_OLD="$CXX" 198 CC="$BUILD_CC" 199 CXX="$BUILD_CXX" 200 CFLAGS_OLD="$CFLAGS" 201 CFLAGS="" 202 BUILD_CC_DISABLE_WARNING_PREFIX="-Wno-" 203 CC="$CC_OLD" 204 CXX="$CXX_OLD" 205 CFLAGS="$CFLAGS_OLD" 206 ;; 207 208 clang) 209 DISABLE_WARNING_PREFIX="-Wno-" 210 CFLAGS_WARNINGS_ARE_ERRORS="-Werror" 211 212 # Additional warnings that are not activated by -Wall and -Wextra 213 WARNINGS_ENABLE_ADDITIONAL="-Wpointer-arith -Wsign-compare -Wreorder \ 214 -Wunused-function -Wundef -Wunused-value -Woverloaded-virtual" 215 WARNINGS_ENABLE_ALL="-Wall -Wextra -Wformat=2 $WARNINGS_ENABLE_ADDITIONAL" 216 217 DISABLED_WARNINGS="unused-parameter unused" 218 219 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 220 # missing-method-return-type triggers in JavaNativeFoundation framework 221 DISABLED_WARNINGS="$DISABLED_WARNINGS missing-method-return-type" 222 fi 223 224 ;; 225 226 xlc) 227 DISABLE_WARNING_PREFIX="-qsuppress=" 228 CFLAGS_WARNINGS_ARE_ERRORS="-qhalt=w" 229 230 # Possibly a better subset than "all" is "lan:trx:ret:zea:cmp:ret" 231 WARNINGS_ENABLE_ALL="-qinfo=all -qformat=all" 232 DISABLED_WARNINGS="" 233 ;; 234 esac 235 AC_SUBST(DISABLE_WARNING_PREFIX) 236 AC_SUBST(BUILD_CC_DISABLE_WARNING_PREFIX) 237 AC_SUBST(CFLAGS_WARNINGS_ARE_ERRORS) 238 AC_SUBST(DISABLED_WARNINGS) 239 AC_SUBST(DISABLED_WARNINGS_C) 240 AC_SUBST(DISABLED_WARNINGS_CXX) 241 ]) 242 243 AC_DEFUN([FLAGS_SETUP_QUALITY_CHECKS], 244 [ 245 # bounds, memory and behavior checking options 246 if test "x$TOOLCHAIN_TYPE" = xgcc; then 247 case $DEBUG_LEVEL in 248 release ) 249 # no adjustment 250 ;; 251 fastdebug ) 252 # no adjustment 253 ;; 254 slowdebug ) 255 # FIXME: By adding this to C(XX)FLAGS_DEBUG_OPTIONS/JVM_CFLAGS_SYMBOLS it 256 # get's added conditionally on whether we produce debug symbols or not. 257 # This is most likely not really correct. 258 259 # Add runtime stack smashing and undefined behavior checks. 260 CFLAGS_DEBUG_OPTIONS="-fstack-protector-all --param ssp-buffer-size=1" 261 CXXFLAGS_DEBUG_OPTIONS="-fstack-protector-all --param ssp-buffer-size=1" 262 263 JVM_CFLAGS_SYMBOLS="$JVM_CFLAGS_SYMBOLS -fstack-protector-all --param ssp-buffer-size=1" 264 ;; 265 esac 266 fi 267 ]) 268 269 AC_DEFUN([FLAGS_SETUP_OPTIMIZATION], 270 [ 271 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then 272 CC_HIGHEST="-fns -fsimple -fsingle -xbuiltin=%all -xdepend -xrestrict -xlibmil" 273 274 C_O_FLAG_HIGHEST_JVM="-xO4" 275 C_O_FLAG_DEBUG_JVM="" 276 C_O_FLAG_SIZE="" 277 C_O_FLAG_DEBUG="" 278 C_O_FLAG_NONE="" 279 if test "x$OPENJDK_TARGET_CPU_ARCH" = "xx86"; then 280 C_O_FLAG_HIGHEST="-xO4 -Wu,-O4~yz $CC_HIGHEST" 281 C_O_FLAG_HI="-xO4 -Wu,-O4~yz" 282 C_O_FLAG_NORM="-xO2 -Wu,-O2~yz" 283 elif test "x$OPENJDK_TARGET_CPU_ARCH" = "xsparc"; then 284 C_O_FLAG_HIGHEST="-xO4 -Wc,-Qrm-s -Wc,-Qiselect-T0 \ 285 -xprefetch=auto,explicit $CC_HIGHEST" 286 C_O_FLAG_HI="-xO4 -Wc,-Qrm-s -Wc,-Qiselect-T0" 287 C_O_FLAG_NORM="-xO2 -Wc,-Qrm-s -Wc,-Qiselect-T0" 288 fi 289 elif test "x$TOOLCHAIN_TYPE" = xgcc; then 290 C_O_FLAG_HIGHEST_JVM="-O3" 291 C_O_FLAG_HIGHEST="-O3" 292 C_O_FLAG_HI="-O3" 293 C_O_FLAG_NORM="-O2" 294 C_O_FLAG_SIZE="-Os" 295 C_O_FLAG_DEBUG="-O0" 296 C_O_FLAG_DEBUG_JVM="-O0" 297 C_O_FLAG_NONE="-O0" 298 elif test "x$TOOLCHAIN_TYPE" = xclang; then 299 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 300 # On MacOSX we optimize for size, something 301 # we should do for all platforms? 302 C_O_FLAG_HIGHEST_JVM="-Os" 303 C_O_FLAG_HIGHEST="-Os" 304 C_O_FLAG_HI="-Os" 305 C_O_FLAG_NORM="-Os" 306 C_O_FLAG_DEBUG_JVM="" 307 else 308 C_O_FLAG_HIGHEST_JVM="-O3" 309 C_O_FLAG_HIGHEST="-O3" 310 C_O_FLAG_HI="-O3" 311 C_O_FLAG_NORM="-O2" 312 C_O_FLAG_DEBUG_JVM="-O0" 313 fi 314 C_O_FLAG_SIZE="-Os" 315 C_O_FLAG_DEBUG="-O0" 316 C_O_FLAG_NONE="-O0" 317 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 318 C_O_FLAG_HIGHEST_JVM="-O3 -qhot=level=1 -qinline -qinlglue" 319 C_O_FLAG_HIGHEST="-O3 -qhot=level=1 -qinline -qinlglue" 320 C_O_FLAG_HI="-O3 -qinline -qinlglue" 321 C_O_FLAG_NORM="-O2" 322 C_O_FLAG_DEBUG="-qnoopt" 323 # FIXME: Value below not verified. 324 C_O_FLAG_DEBUG_JVM="" 325 C_O_FLAG_NONE="-qnoopt" 326 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 327 C_O_FLAG_HIGHEST_JVM="-O2 -Oy-" 328 C_O_FLAG_HIGHEST="-O2" 329 C_O_FLAG_HI="-O1" 330 C_O_FLAG_NORM="-O1" 331 C_O_FLAG_DEBUG="-Od" 332 C_O_FLAG_DEBUG_JVM="" 333 C_O_FLAG_NONE="-Od" 334 C_O_FLAG_SIZE="-Os" 335 fi 336 337 # Now copy to C++ flags 338 CXX_O_FLAG_HIGHEST_JVM="$C_O_FLAG_HIGHEST_JVM" 339 CXX_O_FLAG_HIGHEST="$C_O_FLAG_HIGHEST" 340 CXX_O_FLAG_HI="$C_O_FLAG_HI" 341 CXX_O_FLAG_NORM="$C_O_FLAG_NORM" 342 CXX_O_FLAG_DEBUG="$C_O_FLAG_DEBUG" 343 CXX_O_FLAG_DEBUG_JVM="$C_O_FLAG_DEBUG_JVM" 344 CXX_O_FLAG_NONE="$C_O_FLAG_NONE" 345 CXX_O_FLAG_SIZE="$C_O_FLAG_SIZE" 346 347 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then 348 # In solstudio, also add this to C (but not C++) flags... 349 C_O_FLAG_HIGHEST="$C_O_FLAG_HIGHEST -xalias_level=basic" 350 fi 351 352 # Adjust optimization flags according to debug level. 353 case $DEBUG_LEVEL in 354 release ) 355 # no adjustment 356 ;; 357 fastdebug ) 358 # Not quite so much optimization 359 C_O_FLAG_HI="$C_O_FLAG_NORM" 360 CXX_O_FLAG_HI="$CXX_O_FLAG_NORM" 361 ;; 362 slowdebug ) 363 # Disable optimization 364 C_O_FLAG_HIGHEST_JVM="$C_O_FLAG_DEBUG_JVM" 365 C_O_FLAG_HIGHEST="$C_O_FLAG_DEBUG" 366 C_O_FLAG_HI="$C_O_FLAG_DEBUG" 367 C_O_FLAG_NORM="$C_O_FLAG_DEBUG" 368 C_O_FLAG_SIZE="$C_O_FLAG_DEBUG" 369 CXX_O_FLAG_HIGHEST_JVM="$CXX_O_FLAG_DEBUG_JVM" 370 CXX_O_FLAG_HIGHEST="$CXX_O_FLAG_DEBUG" 371 CXX_O_FLAG_HI="$CXX_O_FLAG_DEBUG" 372 CXX_O_FLAG_NORM="$CXX_O_FLAG_DEBUG" 373 CXX_O_FLAG_SIZE="$CXX_O_FLAG_DEBUG" 374 ;; 375 esac 376 377 AC_SUBST(C_O_FLAG_HIGHEST_JVM) 378 AC_SUBST(C_O_FLAG_HIGHEST) 379 AC_SUBST(C_O_FLAG_HI) 380 AC_SUBST(C_O_FLAG_NORM) 381 AC_SUBST(C_O_FLAG_NONE) 382 AC_SUBST(C_O_FLAG_SIZE) 383 AC_SUBST(CXX_O_FLAG_HIGHEST_JVM) 384 AC_SUBST(CXX_O_FLAG_HIGHEST) 385 AC_SUBST(CXX_O_FLAG_HI) 386 AC_SUBST(CXX_O_FLAG_NORM) 387 AC_SUBST(CXX_O_FLAG_NONE) 388 AC_SUBST(CXX_O_FLAG_SIZE) 389 ]) 390 391 AC_DEFUN([FLAGS_SETUP_CFLAGS], 392 [ 393 ### CFLAGS 394 395 FLAGS_SETUP_CFLAGS_HELPER 396 397 FLAGS_OS=$OPENJDK_TARGET_OS 398 FLAGS_OS_TYPE=$OPENJDK_TARGET_OS_TYPE 399 FLAGS_CPU=$OPENJDK_TARGET_CPU 400 FLAGS_CPU_ARCH=$OPENJDK_TARGET_CPU_ARCH 401 FLAGS_CPU_BITS=$OPENJDK_TARGET_CPU_BITS 402 FLAGS_CPU_ENDIAN=$OPENJDK_TARGET_CPU_ENDIAN 403 FLAGS_CPU_LEGACY=$OPENJDK_TARGET_CPU_LEGACY 404 FLAGS_CPU_LEGACY_LIB=$OPENJDK_TARGET_CPU_LEGACY_LIB 405 406 FLAGS_SETUP_CFLAGS_CPU_DEP([TARGET]) 407 408 FLAGS_OS=$OPENJDK_BUILD_OS 409 FLAGS_OS_TYPE=$OPENJDK_BUILD_OS_TYPE 410 FLAGS_CPU=$OPENJDK_BUILD_CPU 411 FLAGS_CPU_ARCH=$OPENJDK_BUILD_CPU_ARCH 412 FLAGS_CPU_BITS=$OPENJDK_BUILD_CPU_BITS 413 FLAGS_CPU_ENDIAN=$OPENJDK_BUILD_CPU_ENDIAN 414 FLAGS_CPU_LEGACY=$OPENJDK_BUILD_CPU_LEGACY 415 FLAGS_CPU_LEGACY_LIB=$OPENJDK_BUILD_CPU_LEGACY_LIB 416 417 FLAGS_SETUP_CFLAGS_CPU_DEP([BUILD], [OPENJDK_BUILD_]) 418 419 COMPILER_FP_CONTRACT_OFF_FLAG="-ffp-contract=off" 420 # Check that the compiler supports -ffp-contract=off flag 421 # Set FDLIBM_CFLAGS to -ffp-contract=off if it does. Empty 422 # otherwise. 423 # These flags are required for GCC-based builds of 424 # fdlibm with optimization without losing precision. 425 # Notably, -ffp-contract=off needs to be added for GCC >= 4.6. 426 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 427 FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${COMPILER_FP_CONTRACT_OFF_FLAG}], 428 IF_TRUE: [FDLIBM_CFLAGS=${COMPILER_FP_CONTRACT_OFF_FLAG}], 429 IF_FALSE: [FDLIBM_CFLAGS=""]) 430 fi 431 AC_SUBST(FDLIBM_CFLAGS) 432 ]) 433 434 ################################################################################ 435 # platform independent 436 AC_DEFUN([FLAGS_SETUP_CFLAGS_HELPER], 437 [ 438 #### OS DEFINES, these should be independent on toolchain 439 if test "x$OPENJDK_TARGET_OS" = xlinux; then 440 CFLAGS_OS_DEF_JVM="-DLINUX" 441 CFLAGS_OS_DEF_JDK="-D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE" 442 elif test "x$OPENJDK_TARGET_OS" = xsolaris; then 443 CFLAGS_OS_DEF_JVM="-DSOLARIS" 444 CFLAGS_OS_DEF_JDK="-D__solaris__" 445 elif test "x$OPENJDK_TARGET_OS" = xmacosx; then 446 CFLAGS_OS_DEF_JVM="-D_ALLBSD_SOURCE -D_DARWIN_C_SOURCE -D_XOPEN_SOURCE" 447 CFLAGS_OS_DEF_JDK="-D_ALLBSD_SOURCE -D_DARWIN_UNLIMITED_SELECT" 448 elif test "x$OPENJDK_TARGET_OS" = xaix; then 449 CFLAGS_OS_DEF_JVM="-DAIX" 450 elif test "x$OPENJDK_TARGET_OS" = xbsd; then 451 CFLAGS_OS_DEF_JDK="-D_ALLBSD_SOURCE" 452 elif test "x$OPENJDK_TARGET_OS" = xwindows; then 453 CFLAGS_OS_DEF_JVM="-D_WINDOWS -DWIN32 -D_JNI_IMPLEMENTATION_" 454 fi 455 456 CFLAGS_OS_DEF_JDK="$CFLAGS_OS_DEF_JDK -D$OPENJDK_TARGET_OS_UPPERCASE" 457 458 #### GLOBAL DEFINES 459 # Set some common defines. These works for all compilers, but assume 460 # -D is universally accepted. 461 462 # Always enable optional macros for VM. 463 ALWAYS_CFLAGS_JVM="-D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS" 464 465 # Setup some hard coded includes 466 ALWAYS_CFLAGS_JDK=" \ 467 -I\$(SUPPORT_OUTPUTDIR)/modules_include/java.base \ 468 -I\$(SUPPORT_OUTPUTDIR)/modules_include/java.base/\$(OPENJDK_TARGET_OS_INCLUDE_SUBDIR) \ 469 -I${TOPDIR}/src/java.base/share/native/libjava \ 470 -I${TOPDIR}/src/java.base/$OPENJDK_TARGET_OS_TYPE/native/libjava \ 471 -I${TOPDIR}/src/hotspot/share/include \ 472 -I${TOPDIR}/src/hotspot/os/${HOTSPOT_TARGET_OS_TYPE}/include" 473 474 ############################################################################### 475 476 # Adjust flags according to debug level. 477 # Setup debug/release defines 478 if test "x$DEBUG_LEVEL" = xrelease; then 479 DEBUG_CFLAGS_JDK="-DNDEBUG" 480 if test "x$OPENJDK_TARGET_OS" = xsolaris; then 481 DEBUG_CFLAGS_JDK="$DEBUG_CFLAGS_JDK -DTRIMMED" 482 fi 483 else 484 DEBUG_CFLAGS_JDK="-DDEBUG" 485 486 if test "x$TOOLCHAIN_TYPE" = xxlc; then 487 # We need '-qminimaltoc' or '-qpic=large -bbigtoc' if the TOC overflows. 488 # Hotspot now overflows its 64K TOC (currently only for debug), 489 # so for debug we build with '-qpic=large -bbigtoc'. 490 DEBUG_CFLAGS_JVM="-qpic=large" 491 fi 492 fi 493 494 if test "x$DEBUG_LEVEL" != xrelease; then 495 DEBUG_OPTIONS_FLAGS_JDK="$CFLAGS_DEBUG_OPTIONS" 496 DEBUG_SYMBOLS_CFLAGS_JDK="$CFLAGS_DEBUG_SYMBOLS" 497 fi 498 499 #### TOOLCHAIN DEFINES 500 501 if test "x$TOOLCHAIN_TYPE" = xgcc; then 502 ALWAYS_DEFINES_JVM="-D_GNU_SOURCE -D_REENTRANT" 503 elif test "x$TOOLCHAIN_TYPE" = xclang; then 504 ALWAYS_DEFINES_JVM="-D_GNU_SOURCE" 505 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 506 ALWAYS_DEFINES_JVM="-DSPARC_WORKS -D_Crun_inline_placement" 507 ALWAYS_DEFINES_JDK="-DTRACING -DMACRO_MEMSYS_OPS -DBREAKPTS" 508 ALWAYS_DEFINES_JDK_CXXONLY="-DCC_NOEX" 509 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 510 ALWAYS_DEFINES_JVM="-D_REENTRANT" 511 ALWAYS_DEFINES_JDK="-D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE -DSTDC" 512 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 513 ALWAYS_DEFINES_JDK="-DWIN32_LEAN_AND_MEAN -D_CRT_SECURE_NO_DEPRECATE \ 514 -D_CRT_NONSTDC_NO_DEPRECATE -DWIN32 -DIAL" 515 ALWAYS_DEFINES_JVM="-DNOMINMAX -DWIN32_LEAN_AND_MEAN" 516 fi 517 518 ############################################################################### 519 # 520 # 521 # CFLAGS BASIC 522 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 523 # COMMON to gcc and clang 524 TOOLCHAIN_CFLAGS_JVM="-pipe -fno-rtti -fno-exceptions \ 525 -fvisibility=hidden -fno-strict-aliasing -fno-omit-frame-pointer" 526 fi 527 528 if test "x$TOOLCHAIN_TYPE" = xgcc; then 529 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -fcheck-new" 530 TOOLCHAIN_CFLAGS_JDK="-pipe" 531 TOOLCHAIN_CFLAGS_JDK_CONLY="-fno-strict-aliasing" # technically NOT for CXX (but since this gives *worse* performance, use no-strict-aliasing everywhere!) 532 533 CXXSTD_CXXFLAG="-std=gnu++98" 534 FLAGS_CXX_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$CXXSTD_CXXFLAG -Werror], 535 IF_FALSE: [CXXSTD_CXXFLAG=""]) 536 TOOLCHAIN_CFLAGS_JDK_CXXONLY="$CXXSTD_CXXFLAG" 537 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM $CXXSTD_CXXFLAG" 538 ADLC_CXXFLAG="$CXXSTD_CXXFLAG" 539 540 541 elif test "x$TOOLCHAIN_TYPE" = xclang; then 542 # Restrict the debug information created by Clang to avoid 543 # too big object files and speed the build up a little bit 544 # (see http://llvm.org/bugs/show_bug.cgi?id=7554) 545 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -flimit-debug-info" 546 547 # In principle the stack alignment below is cpu- and ABI-dependent and 548 # should agree with values of StackAlignmentInBytes in various 549 # src/hotspot/cpu/*/globalDefinitions_*.hpp files, but this value currently 550 # works for all platforms. 551 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -mno-omit-leaf-frame-pointer -mstack-alignment=16" 552 553 if test "x$OPENJDK_TARGET_OS" = xlinux; then 554 TOOLCHAIN_CFLAGS_JDK="-pipe" 555 TOOLCHAIN_CFLAGS_JDK_CONLY="-fno-strict-aliasing" # technically NOT for CXX 556 fi 557 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 558 TOOLCHAIN_FLAGS="-errtags -errfmt" 559 TOOLCHAIN_CFLAGS="-errshort=tags" 560 561 TOOLCHAIN_CFLAGS_JDK="-mt $TOOLCHAIN_FLAGS" 562 TOOLCHAIN_CFLAGS_JDK_CONLY="-std=c99 -xCC -W0,-noglobal $TOOLCHAIN_CFLAGS" # C only 563 TOOLCHAIN_CFLAGS_JDK_CXXONLY="-features=no%except -norunpath -xnolib" # CXX only 564 TOOLCHAIN_CFLAGS_JVM="-template=no%extdef -features=no%split_init \ 565 -library=stlport4 -mt -features=no%except $TOOLCHAIN_FLAGS" 566 if test "x$DEBUG_LEVEL" = xslowdebug; then 567 # Previously -g was used instead of -g0 for slowdebug; this is equivalent 568 # to setting +d. 569 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM +d" 570 fi 571 572 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 573 # Suggested additions: -qsrcmsg to get improved error reporting 574 TOOLCHAIN_CFLAGS_JDK="-qchars=signed -qfullpath -qsaveopt" # add on both CFLAGS 575 TOOLCHAIN_CFLAGS_JVM="-qtune=balanced \ 576 -qalias=noansi -qstrict -qtls=default -qlanglvl=c99vla \ 577 -qlanglvl=noredefmac -qnortti -qnoeh -qignerrno" 578 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 579 TOOLCHAIN_CFLAGS_JVM="-nologo -MD -MP" 580 TOOLCHAIN_CFLAGS_JDK="-nologo -MD -Zc:wchar_t-" 581 fi 582 583 # CFLAGS WARNINGS STUFF 584 # Set JVM_CFLAGS warning handling 585 if test "x$TOOLCHAIN_TYPE" = xgcc; then 586 WARNING_CFLAGS_JDK_CONLY="$WARNINGS_ENABLE_ALL_CFLAGS" 587 WARNING_CFLAGS_JDK_CXXONLY="$WARNINGS_ENABLE_ALL_CXXFLAGS" 588 WARNING_CFLAGS_JVM="$WARNINGS_ENABLE_ALL_CXXFLAGS" 589 590 elif test "x$TOOLCHAIN_TYPE" = xclang; then 591 WARNING_CFLAGS="$WARNINGS_ENABLE_ALL" 592 593 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 594 WARNING_CFLAGS_JDK_CONLY="$WARNINGS_ENABLE_ALL_CFLAGS" 595 WARNING_CFLAGS_JDK_CXXONLY="$WARNINGS_ENABLE_ALL_CXXFLAGS" 596 WARNING_CFLAGS_JVM="$WARNINGS_ENABLE_ALL_CXXFLAGS" 597 598 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 599 WARNING_CFLAGS="$WARNINGS_ENABLE_ALL" 600 601 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 602 WARNING_CFLAGS="" # currently left empty 603 fi 604 605 # Set some additional per-OS defines. 606 607 # Additional macosx handling 608 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 609 OS_CFLAGS="-DMAC_OS_X_VERSION_MIN_REQUIRED=$MACOSX_VERSION_MIN_NODOTS \ 610 -mmacosx-version-min=$MACOSX_VERSION_MIN" 611 612 if test -n "$MACOSX_VERSION_MAX"; then 613 OS_CFLAGS="$OS_CFLAGS \ 614 -DMAC_OS_X_VERSION_MAX_ALLOWED=$MACOSX_VERSION_MAX_NODOTS" 615 fi 616 fi 617 618 # Where does this really belong?? 619 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 620 PICFLAG="-fPIC" 621 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 622 PICFLAG="-KPIC" 623 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 624 # '-qpic' defaults to 'qpic=small'. This means that the compiler generates only 625 # one instruction for accessing the TOC. If the TOC grows larger than 64K, the linker 626 # will have to patch this single instruction with a call to some out-of-order code which 627 # does the load from the TOC. This is of course slower, and we also would have 628 # to use '-bbigtoc' for linking anyway so we could also change the PICFLAG to 'qpic=large'. 629 # With 'qpic=large' the compiler will by default generate a two-instruction sequence which 630 # can be patched directly by the linker and does not require a jump to out-of-order code. 631 # 632 # Since large TOC causes perf. overhead, only pay it where we must. Currently this is 633 # for all libjvm variants (both gtest and normal) but no other binaries. So, build 634 # libjvm with -qpic=large and link with -bbigtoc. 635 JVM_PICFLAG="-qpic=large" 636 JDK_PICFLAG="-qpic" 637 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 638 PICFLAG="" 639 fi 640 641 if test "x$TOOLCHAIN_TYPE" != xxlc; then 642 JVM_PICFLAG="$PICFLAG" 643 JDK_PICFLAG="$PICFLAG" 644 fi 645 646 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 647 # Linking is different on MacOSX 648 JDK_PICFLAG='' 649 if test "x$STATIC_BUILD" = xtrue; then 650 JVM_PICFLAG="" 651 fi 652 fi 653 654 # Optional POSIX functionality needed by the JVM 655 # 656 # Check if clock_gettime is available and in which library. This indicates 657 # availability of CLOCK_MONOTONIC for hotspot. But we don't need to link, so 658 # don't let it update LIBS. 659 save_LIBS="$LIBS" 660 AC_SEARCH_LIBS(clock_gettime, rt, [HAS_CLOCK_GETTIME=true], []) 661 if test "x$LIBS" = "x-lrt "; then 662 CLOCK_GETTIME_IN_LIBRT=true 663 fi 664 LIBS="$save_LIBS" 665 666 if test "x$HAS_CLOCK_GETTIME" = "xtrue"; then 667 OS_CFLAGS_JVM="$OS_CFLAGS_JVM -DSUPPORTS_CLOCK_MONOTONIC" 668 if test "x$CLOCK_GETTIME_IN_LIBRT" = "xtrue"; then 669 OS_CFLAGS_JVM="$OS_CFLAGS_JVM -DNEEDS_LIBRT" 670 fi 671 fi 672 673 # EXPORT 674 AC_SUBST(ADLC_CXXFLAG) 675 ]) 676 677 ################################################################################ 678 # $1 - Either BUILD or TARGET to pick the correct OS/CPU variables to check 679 # conditionals against. 680 # $2 - Optional prefix for each variable defined. 681 AC_DEFUN([FLAGS_SETUP_CFLAGS_CPU_DEP], 682 [ 683 #### CPU DEFINES, these should (in theory) be independent on toolchain 684 685 # Setup target CPU 686 # Setup endianness 687 if test "x$FLAGS_CPU_ENDIAN" = xlittle; then 688 $1_DEFINES_CPU_JVM="-DVM_LITTLE_ENDIAN" 689 fi 690 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then 691 # The macro _LITTLE_ENDIAN needs to be defined the same to avoid the 692 # Sun C compiler warning message: warning: macro redefined: _LITTLE_ENDIAN 693 if test "x$FLAGS_CPU_ENDIAN" = xlittle; then 694 $1_DEFINES_CPU_JDK="-D_LITTLE_ENDIAN=" 695 else 696 $1_DEFINES_CPU_JDK="-D_BIG_ENDIAN=" 697 fi 698 else 699 if test "x$FLAGS_CPU_ENDIAN" = xlittle; then 700 $1_DEFINES_CPU_JDK="-D_LITTLE_ENDIAN" 701 else 702 $1_DEFINES_CPU_JDK="-D_BIG_ENDIAN" 703 fi 704 fi 705 706 # setup CPU bit size 707 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -DARCH='\"$FLAGS_CPU_LEGACY\"' \ 708 -D$FLAGS_CPU_LEGACY" 709 710 if test "x$FLAGS_CPU_BITS" = x64; then 711 # -D_LP64=1 is only set on linux and mac. Setting on windows causes diff in 712 # unpack200.exe. 713 if test "x$FLAGS_OS" = xlinux || test "x$FLAGS_OS" = xmacosx; then 714 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_LP64=1" 715 fi 716 if test "x$FLAGS_OS" != xsolaris && test "x$FLAGS_OS" != xaix; then 717 # Solaris does not have _LP64=1 in the old build. 718 # xlc on AIX defines _LP64=1 by default and issues a warning if we redefine it. 719 $1_DEFINES_CPU_JVM="${$1_DEFINES_CPU_JVM} -D_LP64=1" 720 fi 721 fi 722 723 # toolchain dependend, per-cpu 724 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then 725 if test "x$FLAGS_CPU_ARCH" = xx86; then 726 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -DcpuIntel -Di586 -D$FLAGS_CPU_LEGACY_LIB" 727 fi 728 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 729 if test "x$FLAGS_CPU" = xx86_64; then 730 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_AMD64_ -Damd64" 731 else 732 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_X86_ -Dx86" 733 fi 734 fi 735 736 # CFLAGS PER CPU 737 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 738 # COMMON to gcc and clang 739 if test "x$FLAGS_CPU" = xx86; then 740 # Force compatibility with i586 on 32 bit intel platforms. 741 $1_CFLAGS_CPU="-march=i586" 742 fi 743 fi 744 745 if test "x$TOOLCHAIN_TYPE" = xgcc; then 746 if test "x$FLAGS_CPU" = xarm; then 747 # -Wno-psabi to get rid of annoying "note: the mangling of 'va_list' has changed in GCC 4.4" 748 $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)\"'" 749 $1_CFLAGS_CPU_JVM="-DARM" 750 elif test "x$FLAGS_CPU_ARCH" = xppc; then 751 $1_CFLAGS_CPU_JVM="-minsert-sched-nops=regroup_exact -mno-multiple -mno-string" 752 if test "x$FLAGS_CPU" = xppc64; then 753 # -mminimal-toc fixes `relocation truncated to fit' error for gcc 4.1. 754 # Use ppc64 instructions, but schedule for power5 755 $1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -mminimal-toc -mcpu=powerpc64 -mtune=power5" 756 elif test "x$FLAGS_CPU" = xppc64le; then 757 # Little endian machine uses ELFv2 ABI. 758 # Use Power8, this is the first CPU to support PPC64 LE with ELFv2 ABI. 759 $1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -DABI_ELFv2 -mcpu=power8 -mtune=power8" 760 fi 761 elif test "x$FLAGS_CPU" = xs390x; then 762 $1_CFLAGS_CPU="-mbackchain -march=z10" 763 fi 764 765 if test "x$FLAGS_CPU_ARCH" != xarm && test "x$FLAGS_CPU_ARCH" != xppc; then 766 # for all archs except arm and ppc, prevent gcc to omit frame pointer 767 $1_CFLAGS_CPU_JDK="${$1_CFLAGS_CPU_JDK} -fno-omit-frame-pointer" 768 fi 769 770 elif test "x$TOOLCHAIN_TYPE" = xclang; then 771 if test "x$FLAGS_OS" = xlinux; then 772 # ppc test not really needed for clang 773 if test "x$FLAGS_CPU_ARCH" != xarm && test "x$FLAGS_CPU_ARCH" != xppc; then 774 # for all archs except arm and ppc, prevent gcc to omit frame pointer 775 $1_CFLAGS_CPU_JDK="${$1_CFLAGS_CPU_JDK} -fno-omit-frame-pointer" 776 fi 777 fi 778 779 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 780 if test "x$FLAGS_CPU" = xx86_64; then 781 # NOTE: -xregs=no%frameptr is supposed to be default on x64 782 $1_CFLAGS_CPU_JDK="-xregs=no%frameptr" 783 elif test "x$FLAGS_CPU" = xsparcv9; then 784 $1_CFLAGS_CPU_JVM="-xarch=sparc" 785 $1_CFLAGS_CPU_JDK_LIBONLY="-xregs=no%appl" 786 fi 787 788 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 789 if test "x$FLAGS_CPU" = xppc64; then 790 $1_CFLAGS_CPU_JVM="-qarch=ppc64" 791 fi 792 793 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 794 if test "x$FLAGS_CPU" = xx86; then 795 $1_CFLAGS_CPU_JVM="-arch:IA32" 796 elif test "x$OPENJDK_TARGET_CPU" = xx86_64; then 797 if test "x$DEBUG_LEVEL" != xrelease; then 798 # NOTE: This is probably redundant; -homeparams is default on 799 # non-release builds. 800 $1_CFLAGS_CPU_JVM="-homeparams" 801 fi 802 fi 803 fi 804 805 if test "x$TOOLCHAIN_TYPE" = xgcc; then 806 TOOLCHAIN_CHECK_COMPILER_VERSION(VERSION: 6, PREFIX: $2, IF_AT_LEAST: FLAGS_SETUP_GCC6_COMPILER_FLAGS($1)) 807 $1_TOOLCHAIN_CFLAGS="${$1_GCC6_CFLAGS}" 808 809 $1_WARNING_CFLAGS_JVM="-Wno-format-zero-length -Wtype-limits -Wuninitialized" 810 fi 811 812 # EXPORT to API 813 CFLAGS_JVM_COMMON="$ALWAYS_CFLAGS_JVM $ALWAYS_DEFINES_JVM $TOOLCHAIN_CFLAGS_JVM \ 814 $OS_CFLAGS $OS_CFLAGS_JVM $CFLAGS_OS_DEF_JVM $DEBUG_CFLAGS_JVM \ 815 $WARNING_CFLAGS $WARNING_CFLAGS_JVM $JVM_PICFLAG" 816 817 CFLAGS_JDK_COMMON="$ALWAYS_CFLAGS_JDK $ALWAYS_DEFINES_JDK $TOOLCHAIN_CFLAGS_JDK \ 818 $OS_CFLAGS $CFLAGS_OS_DEF_JDK $DEBUG_CFLAGS_JDK $DEBUG_OPTIONS_FLAGS_JDK \ 819 $WARNING_CFLAGS $WARNING_CFLAGS_JDK $DEBUG_SYMBOLS_CFLAGS_JDK" 820 821 # Use ${$2EXTRA_CFLAGS} to block EXTRA_CFLAGS to be added to build flags. 822 # (Currently we don't have any OPENJDK_BUILD_EXTRA_CFLAGS, but that might 823 # change in the future.) 824 825 CFLAGS_JDK_COMMON_CONLY="$TOOLCHAIN_CFLAGS_JDK_CONLY \ 826 $WARNING_CFLAGS_JDK_CONLY ${$2EXTRA_CFLAGS}" 827 CFLAGS_JDK_COMMON_CXXONLY="$ALWAYS_DEFINES_JDK_CXXONLY $TOOLCHAIN_CFLAGS_JDK_CXXONLY \ 828 $WARNING_CFLAGS_JDK_CXXONLY ${$2EXTRA_CXXFLAGS}" 829 830 $1_CFLAGS_JVM="${$1_DEFINES_CPU_JVM} ${$1_CFLAGS_CPU} ${$1_CFLAGS_CPU_JVM} ${$1_TOOLCHAIN_CFLAGS} ${$1_WARNING_CFLAGS_JVM}" 831 $1_CFLAGS_JDK="${$1_DEFINES_CPU_JDK} ${$1_CFLAGS_CPU} ${$1_CFLAGS_CPU_JDK} ${$1_TOOLCHAIN_CFLAGS}" 832 833 $2JVM_CFLAGS="$CFLAGS_JVM_COMMON ${$1_CFLAGS_JVM} ${$2EXTRA_CXXFLAGS}" 834 835 $2CFLAGS_JDKEXE="$CFLAGS_JDK_COMMON $CFLAGS_JDK_COMMON_CONLY ${$1_CFLAGS_JDK}" 836 $2CXXFLAGS_JDKEXE="$CFLAGS_JDK_COMMON $CFLAGS_JDK_COMMON_CXXONLY ${$1_CFLAGS_JDK}" 837 $2CFLAGS_JDKLIB="${$2CFLAGS_JDKEXE} $JDK_PICFLAG ${$1_CFLAGS_CPU_JDK_LIBONLY}" 838 $2CXXFLAGS_JDKLIB="${$2CXXFLAGS_JDKEXE} $JDK_PICFLAG ${$1_CFLAGS_CPU_JDK_LIBONLY}" 839 840 AC_SUBST($2JVM_CFLAGS) 841 AC_SUBST($2CFLAGS_JDKLIB) 842 AC_SUBST($2CFLAGS_JDKEXE) 843 AC_SUBST($2CXXFLAGS_JDKLIB) 844 AC_SUBST($2CXXFLAGS_JDKEXE) 845 ]) 846 847 # FLAGS_SETUP_GCC6_COMPILER_FLAGS([PREFIX]) 848 # Arguments: 849 # $1 - Prefix for each variable defined. 850 AC_DEFUN([FLAGS_SETUP_GCC6_COMPILER_FLAGS], 851 [ 852 # These flags are required for GCC 6 builds as undefined behaviour in OpenJDK code 853 # runs afoul of the more aggressive versions of these optimisations. 854 # Notably, value range propagation now assumes that the this pointer of C++ 855 # member functions is non-null. 856 NO_DELETE_NULL_POINTER_CHECKS_CFLAG="-fno-delete-null-pointer-checks" 857 dnl Argument check is disabled until FLAGS_COMPILER_CHECK_ARGUMENTS handles cross-compilation 858 dnl FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_DELETE_NULL_POINTER_CHECKS_CFLAG -Werror], 859 dnl IF_FALSE: [NO_DELETE_NULL_POINTER_CHECKS_CFLAG=""]) 860 NO_LIFETIME_DSE_CFLAG="-fno-lifetime-dse" 861 dnl Argument check is disabled until FLAGS_COMPILER_CHECK_ARGUMENTS handles cross-compilation 862 dnl FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_LIFETIME_DSE_CFLAG -Werror], 863 dnl IF_FALSE: [NO_LIFETIME_DSE_CFLAG=""]) 864 AC_MSG_NOTICE([GCC >= 6 detected; adding ${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} and ${NO_LIFETIME_DSE_CFLAG}]) 865 $1_GCC6_CFLAGS="${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} ${NO_LIFETIME_DSE_CFLAG}" 866 ]) 867 868 # Documentation on common flags used for solstudio in HIGHEST. 869 # 870 # WARNING: Use of OPTIMIZATION_LEVEL=HIGHEST in your Makefile needs to be 871 # done with care, there are some assumptions below that need to 872 # be understood about the use of pointers, and IEEE behavior. 873 # 874 # -fns: Use non-standard floating point mode (not IEEE 754) 875 # -fsimple: Do some simplification of floating point arithmetic (not IEEE 754) 876 # -fsingle: Use single precision floating point with 'float' 877 # -xalias_level=basic: Assume memory references via basic pointer types do not alias 878 # (Source with excessing pointer casting and data access with mixed 879 # pointer types are not recommended) 880 # -xbuiltin=%all: Use intrinsic or inline versions for math/std functions 881 # (If you expect perfect errno behavior, do not use this) 882 # -xdepend: Loop data dependency optimizations (need -xO3 or higher) 883 # -xrestrict: Pointer parameters to functions do not overlap 884 # (Similar to -xalias_level=basic usage, but less obvious sometimes. 885 # If you pass in multiple pointers to the same data, do not use this) 886 # -xlibmil: Inline some library routines 887 # (If you expect perfect errno behavior, do not use this) 888 # -xlibmopt: Use optimized math routines (CURRENTLY DISABLED) 889 # (If you expect perfect errno behavior, do not use this) 890 # Can cause undefined external on Solaris 8 X86 on __sincos, removing for now