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=$OPENJDK_BUILD_CPU_LEGACY_LIB 373 374 FLAGS_SETUP_CFLAGS_CPU_DEP([BUILD], [OPENJDK_BUILD_]) 375 376 COMPILER_FP_CONTRACT_OFF_FLAG="-ffp-contract=off" 377 # Check that the compiler supports -ffp-contract=off flag 378 # Set FDLIBM_CFLAGS to -ffp-contract=off if it does. Empty 379 # otherwise. 380 # These flags are required for GCC-based builds of 381 # fdlibm with optimization without losing precision. 382 # Notably, -ffp-contract=off needs to be added for GCC >= 4.6. 383 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 384 FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${COMPILER_FP_CONTRACT_OFF_FLAG}], 385 IF_TRUE: [FDLIBM_CFLAGS=${COMPILER_FP_CONTRACT_OFF_FLAG}], 386 IF_FALSE: [FDLIBM_CFLAGS=""]) 387 fi 388 AC_SUBST(FDLIBM_CFLAGS) 389 390 # Tests are only ever compiled for TARGET 391 CFLAGS_TESTLIB="$CFLAGS_JDKLIB" 392 CXXFLAGS_TESTLIB="$CXXFLAGS_JDKLIB" 393 CFLAGS_TESTEXE="$CFLAGS_JDKEXE" 394 CXXFLAGS_TESTEXE="$CXXFLAGS_JDKEXE" 395 396 AC_SUBST(CFLAGS_TESTLIB) 397 AC_SUBST(CFLAGS_TESTEXE) 398 AC_SUBST(CXXFLAGS_TESTLIB) 399 AC_SUBST(CXXFLAGS_TESTEXE) 400 ]) 401 402 ################################################################################ 403 # platform independent 404 AC_DEFUN([FLAGS_SETUP_CFLAGS_HELPER], 405 [ 406 #### OS DEFINES, these should be independent on toolchain 407 if test "x$OPENJDK_TARGET_OS" = xlinux; then 408 CFLAGS_OS_DEF_JVM="-DLINUX" 409 CFLAGS_OS_DEF_JDK="-D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE" 410 elif test "x$OPENJDK_TARGET_OS" = xsolaris; then 411 CFLAGS_OS_DEF_JVM="-DSOLARIS" 412 CFLAGS_OS_DEF_JDK="-D__solaris__" 413 elif test "x$OPENJDK_TARGET_OS" = xmacosx; then 414 CFLAGS_OS_DEF_JVM="-D_ALLBSD_SOURCE -D_DARWIN_C_SOURCE -D_XOPEN_SOURCE" 415 CFLAGS_OS_DEF_JDK="-D_ALLBSD_SOURCE -D_DARWIN_UNLIMITED_SELECT" 416 elif test "x$OPENJDK_TARGET_OS" = xaix; then 417 CFLAGS_OS_DEF_JVM="-DAIX" 418 elif test "x$OPENJDK_TARGET_OS" = xbsd; then 419 CFLAGS_OS_DEF_JDK="-D_ALLBSD_SOURCE" 420 elif test "x$OPENJDK_TARGET_OS" = xwindows; then 421 CFLAGS_OS_DEF_JVM="-D_WINDOWS -DWIN32 -D_JNI_IMPLEMENTATION_" 422 fi 423 424 CFLAGS_OS_DEF_JDK="$CFLAGS_OS_DEF_JDK -D$OPENJDK_TARGET_OS_UPPERCASE" 425 426 #### GLOBAL DEFINES 427 # Set some common defines. These works for all compilers, but assume 428 # -D is universally accepted. 429 430 # Always enable optional macros for VM. 431 ALWAYS_CFLAGS_JVM="-D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS" 432 433 # Setup some hard coded includes 434 ALWAYS_CFLAGS_JDK=" \ 435 -I\$(SUPPORT_OUTPUTDIR)/modules_include/java.base \ 436 -I\$(SUPPORT_OUTPUTDIR)/modules_include/java.base/\$(OPENJDK_TARGET_OS_INCLUDE_SUBDIR) \ 437 -I${TOPDIR}/src/java.base/share/native/libjava \ 438 -I${TOPDIR}/src/java.base/$OPENJDK_TARGET_OS_TYPE/native/libjava \ 439 -I${TOPDIR}/src/hotspot/share/include \ 440 -I${TOPDIR}/src/hotspot/os/${HOTSPOT_TARGET_OS_TYPE}/include" 441 442 ############################################################################### 443 444 # Adjust flags according to debug level. 445 # Setup debug/release defines 446 if test "x$DEBUG_LEVEL" = xrelease; then 447 DEBUG_CFLAGS_JDK="-DNDEBUG" 448 if test "x$OPENJDK_TARGET_OS" = xsolaris; then 449 DEBUG_CFLAGS_JDK="$DEBUG_CFLAGS_JDK -DTRIMMED" 450 fi 451 else 452 DEBUG_CFLAGS_JDK="-DDEBUG" 453 454 if test "x$TOOLCHAIN_TYPE" = xxlc; then 455 # We need '-qminimaltoc' or '-qpic=large -bbigtoc' if the TOC overflows. 456 # Hotspot now overflows its 64K TOC (currently only for debug), 457 # so for debug we build with '-qpic=large -bbigtoc'. 458 DEBUG_CFLAGS_JVM="-qpic=large" 459 fi 460 fi 461 462 if test "x$DEBUG_LEVEL" != xrelease; then 463 DEBUG_OPTIONS_FLAGS_JDK="$CFLAGS_DEBUG_OPTIONS" 464 DEBUG_SYMBOLS_CFLAGS_JDK="$CFLAGS_DEBUG_SYMBOLS" 465 fi 466 467 #### TOOLCHAIN DEFINES 468 469 if test "x$TOOLCHAIN_TYPE" = xgcc; then 470 ALWAYS_DEFINES_JVM="-D_GNU_SOURCE -D_REENTRANT" 471 elif test "x$TOOLCHAIN_TYPE" = xclang; then 472 ALWAYS_DEFINES_JVM="-D_GNU_SOURCE" 473 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 474 ALWAYS_DEFINES_JVM="-DSPARC_WORKS -D_Crun_inline_placement" 475 ALWAYS_DEFINES_JDK="-DTRACING -DMACRO_MEMSYS_OPS -DBREAKPTS" 476 ALWAYS_DEFINES_JDK_CXXONLY="-DCC_NOEX" 477 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 478 ALWAYS_DEFINES_JVM="-D_REENTRANT" 479 ALWAYS_DEFINES_JDK="-D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE -DSTDC" 480 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 481 ALWAYS_DEFINES_JDK="-DWIN32_LEAN_AND_MEAN -D_CRT_SECURE_NO_DEPRECATE \ 482 -D_CRT_NONSTDC_NO_DEPRECATE -DWIN32 -DIAL" 483 ALWAYS_DEFINES_JVM="-DNOMINMAX -DWIN32_LEAN_AND_MEAN" 484 fi 485 486 ############################################################################### 487 # 488 # 489 # CFLAGS BASIC 490 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 491 # COMMON to gcc and clang 492 TOOLCHAIN_CFLAGS_JVM="-pipe -fno-rtti -fno-exceptions \ 493 -fvisibility=hidden -fno-strict-aliasing -fno-omit-frame-pointer" 494 fi 495 496 if test "x$TOOLCHAIN_TYPE" = xgcc; then 497 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -fcheck-new" 498 TOOLCHAIN_CFLAGS_JDK="-pipe" 499 TOOLCHAIN_CFLAGS_JDK_CONLY="-fno-strict-aliasing" # technically NOT for CXX (but since this gives *worse* performance, use no-strict-aliasing everywhere!) 500 501 CXXSTD_CXXFLAG="-std=gnu++98" 502 FLAGS_CXX_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$CXXSTD_CXXFLAG -Werror], 503 IF_FALSE: [CXXSTD_CXXFLAG=""]) 504 TOOLCHAIN_CFLAGS_JDK_CXXONLY="$CXXSTD_CXXFLAG" 505 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM $CXXSTD_CXXFLAG" 506 ADLC_CXXFLAG="$CXXSTD_CXXFLAG" 507 508 509 elif test "x$TOOLCHAIN_TYPE" = xclang; then 510 # Restrict the debug information created by Clang to avoid 511 # too big object files and speed the build up a little bit 512 # (see http://llvm.org/bugs/show_bug.cgi?id=7554) 513 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -flimit-debug-info" 514 515 # In principle the stack alignment below is cpu- and ABI-dependent and 516 # should agree with values of StackAlignmentInBytes in various 517 # src/hotspot/cpu/*/globalDefinitions_*.hpp files, but this value currently 518 # works for all platforms. 519 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -mno-omit-leaf-frame-pointer -mstack-alignment=16" 520 521 if test "x$OPENJDK_TARGET_OS" = xlinux; then 522 TOOLCHAIN_CFLAGS_JDK="-pipe" 523 TOOLCHAIN_CFLAGS_JDK_CONLY="-fno-strict-aliasing" # technically NOT for CXX 524 fi 525 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 526 TOOLCHAIN_CFLAGS_JDK="-mt" 527 TOOLCHAIN_CFLAGS_JDK_CONLY="-xc99=%none -xCC -Xa -v -W0,-noglobal" # C only 528 TOOLCHAIN_CFLAGS_JDK_CXXONLY="-features=no%except -norunpath -xnolib" # CXX only 529 TOOLCHAIN_CFLAGS_JVM="-template=no%extdef -features=no%split_init \ 530 -library=stlport4 -mt -features=no%except" 531 if test "x$DEBUG_LEVEL" = xslowdebug; then 532 # Previously -g was used instead of -g0 for slowdebug; this is equivalent 533 # to setting +d. 534 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM +d" 535 fi 536 537 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 538 TOOLCHAIN_CFLAGS_JDK="-qchars=signed -qfullpath -qsaveopt" # add on both CFLAGS 539 TOOLCHAIN_CFLAGS_JVM="-qtune=balanced \ 540 -qalias=noansi -qstrict -qtls=default -qlanglvl=c99vla \ 541 -qlanglvl=noredefmac -qnortti -qnoeh -qignerrno" 542 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 543 TOOLCHAIN_CFLAGS_JVM="-nologo -MD -MP" 544 TOOLCHAIN_CFLAGS_JDK="-nologo -MD -Zc:wchar_t-" 545 fi 546 547 # CFLAGS WARNINGS STUFF 548 # Set JVM_CFLAGS warning handling 549 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 550 # COMMON to gcc and clang 551 WARNING_CFLAGS_JVM="-Wpointer-arith -Wsign-compare -Wunused-function" 552 if ! HOTSPOT_CHECK_JVM_VARIANT(zero); then 553 # Non-zero builds have stricter warnings 554 WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wundef -Wformat=2" 555 fi 556 557 fi 558 if test "x$TOOLCHAIN_TYPE" = xgcc; then 559 WARNING_CFLAGS_JDK="-Wall -Wextra -Wno-unused -Wno-unused-parameter -Wformat=2" 560 WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wunused-value -Woverloaded-virtual -Wreorder" 561 562 if ! HOTSPOT_CHECK_JVM_VARIANT(zero); then 563 # Non-zero builds have stricter warnings 564 WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wreturn-type" 565 fi 566 elif test "x$TOOLCHAIN_TYPE" = xclang; then 567 WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wno-deprecated -Wreorder" 568 if test "x$OPENJDK_TARGET_OS" = xlinux; then 569 WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wno-sometimes-uninitialized" 570 WARNING_CFLAGS_JDK="-Wall -Wextra -Wno-unused -Wno-unused-parameter -Wformat=2" 571 fi 572 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 573 WARNING_CFLAGS_JDK_CONLY="-errshort=tags" 574 WARNING_CFLAGS_JDK_CXXONLY="+w" 575 WARNING_CFLAGS_JDK="-errtags=yes -errfmt" 576 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 577 WARNING_CFLAGS="-W3" 578 WARNING_CFLAGS_JDK="-wd4800" 579 WARNING_CFLAGS_JVM="-wd4800" 580 fi 581 582 # Set some additional per-OS defines. 583 584 # Additional macosx handling 585 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 586 OS_CFLAGS="-DMAC_OS_X_VERSION_MIN_REQUIRED=$MACOSX_VERSION_MIN_NODOTS \ 587 -mmacosx-version-min=$MACOSX_VERSION_MIN" 588 589 if test -n "$MACOSX_VERSION_MAX"; then 590 OS_CFLAGS="$OS_CFLAGS \ 591 -DMAC_OS_X_VERSION_MAX_ALLOWED=$MACOSX_VERSION_MAX_NODOTS" 592 fi 593 fi 594 595 # Where does this really belong?? 596 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 597 PICFLAG="-fPIC" 598 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 599 PICFLAG="-KPIC" 600 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 601 # '-qpic' defaults to 'qpic=small'. This means that the compiler generates only 602 # one instruction for accessing the TOC. If the TOC grows larger than 64K, the linker 603 # will have to patch this single instruction with a call to some out-of-order code which 604 # does the load from the TOC. This is of course slower, and we also would have 605 # to use '-bbigtoc' for linking anyway so we could also change the PICFLAG to 'qpic=large'. 606 # With 'qpic=large' the compiler will by default generate a two-instruction sequence which 607 # can be patched directly by the linker and does not require a jump to out-of-order code. 608 # 609 # Since large TOC causes perf. overhead, only pay it where we must. Currently this is 610 # for all libjvm variants (both gtest and normal) but no other binaries. So, build 611 # libjvm with -qpic=large and link with -bbigtoc. 612 JVM_PICFLAG="-qpic=large" 613 JDK_PICFLAG="-qpic" 614 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 615 PICFLAG="" 616 fi 617 618 if test "x$TOOLCHAIN_TYPE" != xxlc; then 619 JVM_PICFLAG="$PICFLAG" 620 JDK_PICFLAG="$PICFLAG" 621 fi 622 623 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 624 # Linking is different on MacOSX 625 JDK_PICFLAG='' 626 if test "x$STATIC_BUILD" = xtrue; then 627 JVM_PICFLAG="" 628 fi 629 fi 630 631 # Optional POSIX functionality needed by the JVM 632 # 633 # Check if clock_gettime is available and in which library. This indicates 634 # availability of CLOCK_MONOTONIC for hotspot. But we don't need to link, so 635 # don't let it update LIBS. 636 save_LIBS="$LIBS" 637 AC_SEARCH_LIBS(clock_gettime, rt, [HAS_CLOCK_GETTIME=true], []) 638 if test "x$LIBS" = "x-lrt "; then 639 CLOCK_GETTIME_IN_LIBRT=true 640 fi 641 LIBS="$save_LIBS" 642 643 if test "x$HAS_CLOCK_GETTIME" = "xtrue"; then 644 OS_CFLAGS_JVM="$OS_CFLAGS_JVM -DSUPPORTS_CLOCK_MONOTONIC" 645 if test "x$CLOCK_GETTIME_IN_LIBRT" = "xtrue"; then 646 OS_CFLAGS_JVM="$OS_CFLAGS_JVM -DNEEDS_LIBRT" 647 fi 648 fi 649 650 # EXPORT 651 AC_SUBST(ADLC_CXXFLAG) 652 ]) 653 654 ################################################################################ 655 # $1 - Either BUILD or TARGET to pick the correct OS/CPU variables to check 656 # conditionals against. 657 # $2 - Optional prefix for each variable defined. 658 AC_DEFUN([FLAGS_SETUP_CFLAGS_CPU_DEP], 659 [ 660 #### CPU DEFINES, these should (in theory) be independent on toolchain 661 662 # Setup target CPU 663 # Setup endianness 664 if test "x$FLAGS_CPU_ENDIAN" = xlittle; then 665 $1_DEFINES_CPU_JVM="-DVM_LITTLE_ENDIAN" 666 fi 667 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then 668 # The macro _LITTLE_ENDIAN needs to be defined the same to avoid the 669 # Sun C compiler warning message: warning: macro redefined: _LITTLE_ENDIAN 670 if test "x$FLAGS_CPU_ENDIAN" = xlittle; then 671 $1_DEFINES_CPU_JDK="-D_LITTLE_ENDIAN=" 672 else 673 $1_DEFINES_CPU_JDK="-D_BIG_ENDIAN=" 674 fi 675 else 676 if test "x$FLAGS_CPU_ENDIAN" = xlittle; then 677 $1_DEFINES_CPU_JDK="-D_LITTLE_ENDIAN" 678 else 679 $1_DEFINES_CPU_JDK="-D_BIG_ENDIAN" 680 fi 681 fi 682 683 # setup CPU bit size 684 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -DARCH='\"$FLAGS_CPU_LEGACY\"' \ 685 -D$FLAGS_CPU_LEGACY" 686 687 if test "x$FLAGS_CPU_BITS" = x64; then 688 # -D_LP64=1 is only set on linux and mac. Setting on windows causes diff in 689 # unpack200.exe. 690 if test "x$FLAGS_OS" = xlinux || test "x$FLAGS_OS" = xmacosx; then 691 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_LP64=1" 692 fi 693 if test "x$FLAGS_OS" != xsolaris && test "x$FLAGS_OS" != xaix; then 694 # Solaris does not have _LP64=1 in the old build. 695 # xlc on AIX defines _LP64=1 by default and issues a warning if we redefine it. 696 $1_DEFINES_CPU_JVM="${$1_DEFINES_CPU_JVM} -D_LP64=1" 697 fi 698 fi 699 700 # toolchain dependend, per-cpu 701 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then 702 if test "x$FLAGS_CPU_ARCH" = xx86; then 703 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -DcpuIntel -Di586 -D$FLAGS_CPU_LEGACY_LIB" 704 fi 705 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 706 if test "x$FLAGS_CPU" = xx86_64; then 707 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_AMD64_ -Damd64" 708 else 709 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_X86_ -Dx86" 710 fi 711 fi 712 713 # CFLAGS PER CPU 714 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 715 # COMMON to gcc and clang 716 if test "x$FLAGS_CPU" = xx86; then 717 # Force compatibility with i586 on 32 bit intel platforms. 718 $1_CFLAGS_CPU="-march=i586" 719 fi 720 fi 721 722 if test "x$TOOLCHAIN_TYPE" = xgcc; then 723 if test "x$FLAGS_CPU" = xarm; then 724 # -Wno-psabi to get rid of annoying "note: the mangling of 'va_list' has changed in GCC 4.4" 725 $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)\"'" 726 $1_CFLAGS_CPU_JVM="-DARM" 727 elif test "x$FLAGS_CPU_ARCH" = xppc; then 728 $1_CFLAGS_CPU_JVM="-minsert-sched-nops=regroup_exact -mno-multiple -mno-string" 729 if test "x$FLAGS_CPU" = xppc64; then 730 # -mminimal-toc fixes `relocation truncated to fit' error for gcc 4.1. 731 # Use ppc64 instructions, but schedule for power5 732 $1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -mminimal-toc -mcpu=powerpc64 -mtune=power5" 733 elif test "x$FLAGS_CPU" = xppc64le; then 734 # Little endian machine uses ELFv2 ABI. 735 # Use Power8, this is the first CPU to support PPC64 LE with ELFv2 ABI. 736 $1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -DABI_ELFv2 -mcpu=power8 -mtune=power8" 737 fi 738 elif test "x$FLAGS_CPU" = xs390x; then 739 $1_CFLAGS_CPU="-mbackchain -march=z10" 740 fi 741 742 if test "x$FLAGS_CPU_ARCH" != xarm && test "x$FLAGS_CPU_ARCH" != xppc; then 743 # for all archs except arm and ppc, prevent gcc to omit frame pointer 744 $1_CFLAGS_CPU_JDK="${$1_CFLAGS_CPU_JDK} -fno-omit-frame-pointer" 745 fi 746 747 elif test "x$TOOLCHAIN_TYPE" = xclang; then 748 if test "x$FLAGS_OS" = xlinux; then 749 # ppc test not really needed for clang 750 if test "x$FLAGS_CPU_ARCH" != xarm && test "x$FLAGS_CPU_ARCH" != xppc; then 751 # for all archs except arm and ppc, prevent gcc to omit frame pointer 752 $1_CFLAGS_CPU_JDK="${$1_CFLAGS_CPU_JDK} -fno-omit-frame-pointer" 753 fi 754 fi 755 756 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 757 if test "x$FLAGS_CPU" = xx86_64; then 758 # NOTE: -xregs=no%frameptr is supposed to be default on x64 759 $1_CFLAGS_CPU_JDK="-xregs=no%frameptr" 760 elif test "x$FLAGS_CPU" = xsparcv9; then 761 $1_CFLAGS_CPU_JVM="-xarch=sparc" 762 $1_CFLAGS_CPU_JDK_LIBONLY="-xregs=no%appl" 763 fi 764 765 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 766 if test "x$FLAGS_CPU" = xppc64; then 767 $1_CFLAGS_CPU_JVM="-qarch=ppc64" 768 fi 769 770 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 771 if test "x$FLAGS_CPU" = xx86; then 772 $1_CFLAGS_CPU_JVM="-arch:IA32" 773 elif test "x$OPENJDK_TARGET_CPU" = xx86_64; then 774 if test "x$DEBUG_LEVEL" != xrelease; then 775 # NOTE: This is probably redundant; -homeparams is default on 776 # non-release builds. 777 $1_CFLAGS_CPU_JVM="-homeparams" 778 fi 779 fi 780 fi 781 782 if test "x$TOOLCHAIN_TYPE" = xgcc; then 783 TOOLCHAIN_CHECK_COMPILER_VERSION(VERSION: 6, PREFIX: $2, IF_AT_LEAST: FLAGS_SETUP_GCC6_COMPILER_FLAGS($1)) 784 $1_TOOLCHAIN_CFLAGS="${$1_GCC6_CFLAGS}" 785 786 $1_WARNING_CFLAGS_JVM="-Wno-format-zero-length -Wtype-limits -Wuninitialized" 787 fi 788 789 # EXPORT to API 790 CFLAGS_JVM_COMMON="$ALWAYS_CFLAGS_JVM $ALWAYS_DEFINES_JVM $TOOLCHAIN_CFLAGS_JVM \ 791 $OS_CFLAGS $OS_CFLAGS_JVM $CFLAGS_OS_DEF_JVM $DEBUG_CFLAGS_JVM \ 792 $WARNING_CFLAGS $WARNING_CFLAGS_JVM $JVM_PICFLAG" 793 794 CFLAGS_JDK_COMMON="$ALWAYS_CFLAGS_JDK $ALWAYS_DEFINES_JDK $TOOLCHAIN_CFLAGS_JDK \ 795 $OS_CFLAGS $CFLAGS_OS_DEF_JDK $DEBUG_CFLAGS_JDK $DEBUG_OPTIONS_FLAGS_JDK \ 796 $WARNING_CFLAGS $WARNING_CFLAGS_JDK $DEBUG_SYMBOLS_CFLAGS_JDK" 797 798 # Use ${$2EXTRA_CFLAGS} to block EXTRA_CFLAGS to be added to build flags. 799 # (Currently we don't have any OPENJDK_BUILD_EXTRA_CFLAGS, but that might 800 # change in the future.) 801 802 CFLAGS_JDK_COMMON_CONLY="$TOOLCHAIN_CFLAGS_JDK_CONLY \ 803 $WARNING_CFLAGS_JDK_CONLY ${$2EXTRA_CFLAGS}" 804 CFLAGS_JDK_COMMON_CXXONLY="$ALWAYS_DEFINES_JDK_CXXONLY $TOOLCHAIN_CFLAGS_JDK_CXXONLY \ 805 $WARNING_CFLAGS_JDK_CXXONLY ${$2EXTRA_CXXFLAGS}" 806 807 $1_CFLAGS_JVM="${$1_DEFINES_CPU_JVM} ${$1_CFLAGS_CPU} ${$1_CFLAGS_CPU_JVM} ${$1_TOOLCHAIN_CFLAGS} ${$1_WARNING_CFLAGS_JVM}" 808 $1_CFLAGS_JDK="${$1_DEFINES_CPU_JDK} ${$1_CFLAGS_CPU} ${$1_CFLAGS_CPU_JDK} ${$1_TOOLCHAIN_CFLAGS}" 809 810 $2JVM_CFLAGS="$CFLAGS_JVM_COMMON ${$1_CFLAGS_JVM} ${$2EXTRA_CXXFLAGS}" 811 812 $2CFLAGS_JDKEXE="$CFLAGS_JDK_COMMON $CFLAGS_JDK_COMMON_CONLY ${$1_CFLAGS_JDK}" 813 $2CXXFLAGS_JDKEXE="$CFLAGS_JDK_COMMON $CFLAGS_JDK_COMMON_CXXONLY ${$1_CFLAGS_JDK}" 814 $2CFLAGS_JDKLIB="${$2CFLAGS_JDKEXE} $JDK_PICFLAG ${$1_CFLAGS_CPU_JDK_LIBONLY}" 815 $2CXXFLAGS_JDKLIB="${$2CXXFLAGS_JDKEXE} $JDK_PICFLAG ${$1_CFLAGS_CPU_JDK_LIBONLY}" 816 817 AC_SUBST($2JVM_CFLAGS) 818 AC_SUBST($2CFLAGS_JDKLIB) 819 AC_SUBST($2CFLAGS_JDKEXE) 820 AC_SUBST($2CXXFLAGS_JDKLIB) 821 AC_SUBST($2CXXFLAGS_JDKEXE) 822 ]) 823 824 # FLAGS_SETUP_GCC6_COMPILER_FLAGS([PREFIX]) 825 # Arguments: 826 # $1 - Prefix for each variable defined. 827 AC_DEFUN([FLAGS_SETUP_GCC6_COMPILER_FLAGS], 828 [ 829 # These flags are required for GCC 6 builds as undefined behaviour in OpenJDK code 830 # runs afoul of the more aggressive versions of these optimisations. 831 # Notably, value range propagation now assumes that the this pointer of C++ 832 # member functions is non-null. 833 NO_DELETE_NULL_POINTER_CHECKS_CFLAG="-fno-delete-null-pointer-checks" 834 dnl Argument check is disabled until FLAGS_COMPILER_CHECK_ARGUMENTS handles cross-compilation 835 dnl FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_DELETE_NULL_POINTER_CHECKS_CFLAG -Werror], 836 dnl IF_FALSE: [NO_DELETE_NULL_POINTER_CHECKS_CFLAG=""]) 837 NO_LIFETIME_DSE_CFLAG="-fno-lifetime-dse" 838 dnl Argument check is disabled until FLAGS_COMPILER_CHECK_ARGUMENTS handles cross-compilation 839 dnl FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_LIFETIME_DSE_CFLAG -Werror], 840 dnl IF_FALSE: [NO_LIFETIME_DSE_CFLAG=""]) 841 AC_MSG_NOTICE([GCC >= 6 detected; adding ${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} and ${NO_LIFETIME_DSE_CFLAG}]) 842 $1_GCC6_CFLAGS="${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} ${NO_LIFETIME_DSE_CFLAG}" 843 ]) 844 845 # Documentation on common flags used for solstudio in HIGHEST. 846 # 847 # WARNING: Use of OPTIMIZATION_LEVEL=HIGHEST in your Makefile needs to be 848 # done with care, there are some assumptions below that need to 849 # be understood about the use of pointers, and IEEE behavior. 850 # 851 # -fns: Use non-standard floating point mode (not IEEE 754) 852 # -fsimple: Do some simplification of floating point arithmetic (not IEEE 754) 853 # -fsingle: Use single precision floating point with 'float' 854 # -xalias_level=basic: Assume memory references via basic pointer types do not alias 855 # (Source with excessing pointer casting and data access with mixed 856 # pointer types are not recommended) 857 # -xbuiltin=%all: Use intrinsic or inline versions for math/std functions 858 # (If you expect perfect errno behavior, do not use this) 859 # -xdepend: Loop data dependency optimizations (need -xO3 or higher) 860 # -xrestrict: Pointer parameters to functions do not overlap 861 # (Similar to -xalias_level=basic usage, but less obvious sometimes. 862 # If you pass in multiple pointers to the same data, do not use this) 863 # -xlibmil: Inline some library routines 864 # (If you expect perfect errno behavior, do not use this) 865 # -xlibmopt: Use optimized math routines (CURRENTLY DISABLED) 866 # (If you expect perfect errno behavior, do not use this) 867 # Can cause undefined external on Solaris 8 X86 on __sincos, removing for now