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=$OPENJDK_BUILD_CPU_LEGACY_LIB 373 374 FLAGS_SETUP_CFLAGS_CPU_DEP([BUILD], [OPENJDK_BUILD_]) 375 376 COMPILER_FP_CONTRACT_OFF_FLAG="-ffp-contract=off" 377 # Check that the compiler supports -ffp-contract=off flag 378 # Set FDLIBM_CFLAGS to -ffp-contract=off if it does. Empty 379 # otherwise. 380 # These flags are required for GCC-based builds of 381 # fdlibm with optimization without losing precision. 382 # Notably, -ffp-contract=off needs to be added for GCC >= 4.6. 383 FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${COMPILER_FP_CONTRACT_OFF_FLAG}], 384 IF_TRUE: [FDLIBM_CFLAGS=${COMPILER_FP_CONTRACT_OFF_FLAG}], 385 IF_FALSE: [FDLIBM_CFLAGS=""]) 386 AC_SUBST(FDLIBM_CFLAGS) 387 388 # Tests are only ever compiled for TARGET 389 CFLAGS_TESTLIB="$CFLAGS_JDKLIB" 390 CXXFLAGS_TESTLIB="$CXXFLAGS_JDKLIB" 391 CFLAGS_TESTEXE="$CFLAGS_JDKEXE" 392 CXXFLAGS_TESTEXE="$CXXFLAGS_JDKEXE" 393 394 AC_SUBST(CFLAGS_TESTLIB) 395 AC_SUBST(CFLAGS_TESTEXE) 396 AC_SUBST(CXXFLAGS_TESTLIB) 397 AC_SUBST(CXXFLAGS_TESTEXE) 398 ]) 399 400 ################################################################################ 401 # platform independent 402 AC_DEFUN([FLAGS_SETUP_CFLAGS_HELPER], 403 [ 404 #### OS DEFINES, these should be independent on toolchain 405 if test "x$OPENJDK_TARGET_OS" = xlinux; then 406 CFLAGS_OS_DEF_JVM="-DLINUX" 407 CFLAGS_OS_DEF_JDK="-D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE" 408 elif test "x$OPENJDK_TARGET_OS" = xsolaris; then 409 CFLAGS_OS_DEF_JVM="-DSOLARIS" 410 CFLAGS_OS_DEF_JDK="-D__solaris__" 411 elif test "x$OPENJDK_TARGET_OS" = xmacosx; then 412 CFLAGS_OS_DEF_JVM="-D_ALLBSD_SOURCE -D_DARWIN_C_SOURCE -D_XOPEN_SOURCE" 413 CFLAGS_OS_DEF_JDK="-D_ALLBSD_SOURCE -D_DARWIN_UNLIMITED_SELECT" 414 elif test "x$OPENJDK_TARGET_OS" = xaix; then 415 CFLAGS_OS_DEF_JVM="-DAIX" 416 elif test "x$OPENJDK_TARGET_OS" = xbsd; then 417 CFLAGS_OS_DEF_JDK="-D_ALLBSD_SOURCE" 418 elif test "x$OPENJDK_TARGET_OS" = xwindows; then 419 CFLAGS_OS_DEF_JVM="-D_WINDOWS -DWIN32 -D_JNI_IMPLEMENTATION_" 420 fi 421 422 CFLAGS_OS_DEF_JDK="$CFLAGS_OS_DEF_JDK -D$OPENJDK_TARGET_OS_UPPERCASE" 423 424 #### GLOBAL DEFINES 425 # Set some common defines. These works for all compilers, but assume 426 # -D is universally accepted. 427 428 # Always enable optional macros for VM. 429 ALWAYS_CFLAGS_JVM="-D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS" 430 431 # Setup some hard coded includes 432 ALWAYS_CFLAGS_JDK=" \ 433 -I\$(SUPPORT_OUTPUTDIR)/modules_include/java.base \ 434 -I\$(SUPPORT_OUTPUTDIR)/modules_include/java.base/\$(OPENJDK_TARGET_OS_INCLUDE_SUBDIR) \ 435 -I${TOPDIR}/src/java.base/share/native/libjava \ 436 -I${TOPDIR}/src/java.base/$OPENJDK_TARGET_OS_TYPE/native/libjava \ 437 -I${TOPDIR}/src/hotspot/share/include \ 438 -I${TOPDIR}/src/hotspot/os/${HOTSPOT_TARGET_OS_TYPE}/include" 439 440 ############################################################################### 441 442 # Adjust flags according to debug level. 443 # Setup debug/release defines 444 if test "x$DEBUG_LEVEL" = xrelease; then 445 DEBUG_CFLAGS_JDK="-DNDEBUG" 446 if test "x$OPENJDK_TARGET_OS" = xsolaris; then 447 DEBUG_CFLAGS_JDK="$DEBUG_CFLAGS_JDK -DTRIMMED" 448 fi 449 else 450 DEBUG_CFLAGS_JDK="-DDEBUG" 451 452 if test "x$TOOLCHAIN_TYPE" = xxlc; then 453 # We need '-qminimaltoc' or '-qpic=large -bbigtoc' if the TOC overflows. 454 # Hotspot now overflows its 64K TOC (currently only for debug), 455 # so for debug we build with '-qpic=large -bbigtoc'. 456 DEBUG_CFLAGS_JVM="-qpic=large" 457 fi 458 fi 459 460 if test "x$DEBUG_LEVEL" != xrelease; then 461 DEBUG_OPTIONS_FLAGS_JDK="$CFLAGS_DEBUG_OPTIONS" 462 DEBUG_SYMBOLS_CFLAGS_JDK="$CFLAGS_DEBUG_SYMBOLS" 463 fi 464 465 #### TOOLCHAIN DEFINES 466 467 if test "x$TOOLCHAIN_TYPE" = xgcc; then 468 ALWAYS_DEFINES_JVM="-D_GNU_SOURCE -D_REENTRANT" 469 elif test "x$TOOLCHAIN_TYPE" = xclang; then 470 ALWAYS_DEFINES_JVM="-D_GNU_SOURCE" 471 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 472 ALWAYS_DEFINES_JVM="-DSPARC_WORKS -D_Crun_inline_placement" 473 ALWAYS_DEFINES_JDK="-DTRACING -DMACRO_MEMSYS_OPS -DBREAKPTS" 474 ALWAYS_DEFINES_JDK_CXXONLY="-DCC_NOEX" 475 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 476 ALWAYS_DEFINES_JVM="-D_REENTRANT" 477 ALWAYS_DEFINES_JDK="-D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE -DSTDC" 478 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 479 ALWAYS_DEFINES_JDK="-DWIN32_LEAN_AND_MEAN -D_CRT_SECURE_NO_DEPRECATE \ 480 -D_CRT_NONSTDC_NO_DEPRECATE -DWIN32 -DIAL" 481 ALWAYS_DEFINES_JVM="-DNOMINMAX -DWIN32_LEAN_AND_MEAN" 482 fi 483 484 ############################################################################### 485 # 486 # 487 # CFLAGS BASIC 488 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 489 # COMMON to gcc and clang 490 TOOLCHAIN_CFLAGS_JVM="-pipe -fno-rtti -fno-exceptions \ 491 -fvisibility=hidden -fno-strict-aliasing -fno-omit-frame-pointer" 492 fi 493 494 if test "x$TOOLCHAIN_TYPE" = xgcc; then 495 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -fcheck-new" 496 TOOLCHAIN_CFLAGS_JDK="-pipe" 497 TOOLCHAIN_CFLAGS_JDK_CONLY="-fno-strict-aliasing" # technically NOT for CXX (but since this gives *worse* performance, use no-strict-aliasing everywhere!) 498 499 CXXSTD_CXXFLAG="-std=gnu++98" 500 FLAGS_CXX_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$CXXSTD_CXXFLAG -Werror], 501 IF_FALSE: [CXXSTD_CXXFLAG=""]) 502 TOOLCHAIN_CFLAGS_JDK_CXXONLY="$CXXSTD_CXXFLAG" 503 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM $CXXSTD_CXXFLAG" 504 ADLC_CXXFLAG="$CXXSTD_CXXFLAG" 505 506 507 elif test "x$TOOLCHAIN_TYPE" = xclang; then 508 # Restrict the debug information created by Clang to avoid 509 # too big object files and speed the build up a little bit 510 # (see http://llvm.org/bugs/show_bug.cgi?id=7554) 511 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -flimit-debug-info" 512 513 # In principle the stack alignment below is cpu- and ABI-dependent and 514 # should agree with values of StackAlignmentInBytes in various 515 # src/hotspot/cpu/*/globalDefinitions_*.hpp files, but this value currently 516 # works for all platforms. 517 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -mno-omit-leaf-frame-pointer -mstack-alignment=16" 518 519 if test "x$OPENJDK_TARGET_OS" = xlinux; then 520 TOOLCHAIN_CFLAGS_JDK="-pipe" 521 TOOLCHAIN_CFLAGS_JDK_CONLY="-fno-strict-aliasing" # technically NOT for CXX 522 fi 523 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 524 TOOLCHAIN_CFLAGS_JDK="-mt" 525 TOOLCHAIN_CFLAGS_JDK_CONLY="-xc99=%none -xCC -Xa -v -W0,-noglobal" # C only 526 TOOLCHAIN_CFLAGS_JDK_CXXONLY="-features=no%except -norunpath -xnolib" # CXX only 527 TOOLCHAIN_CFLAGS_JVM="-template=no%extdef -features=no%split_init \ 528 -library=stlport4 -mt -features=no%except" 529 if test "x$DEBUG_LEVEL" = xslowdebug; then 530 # Previously -g was used instead of -g0 for slowdebug; this is equivalent 531 # to setting +d. 532 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM +d" 533 fi 534 535 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 536 TOOLCHAIN_CFLAGS_JDK="-qchars=signed -qfullpath -qsaveopt" # add on both CFLAGS 537 TOOLCHAIN_CFLAGS_JVM="-qtune=balanced \ 538 -qalias=noansi -qstrict -qtls=default -qlanglvl=c99vla \ 539 -qlanglvl=noredefmac -qnortti -qnoeh -qignerrno" 540 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 541 TOOLCHAIN_CFLAGS_JVM="-nologo -MD -MP" 542 TOOLCHAIN_CFLAGS_JDK="-nologo -MD -Zc:wchar_t-" 543 fi 544 545 # CFLAGS WARNINGS STUFF 546 # Set JVM_CFLAGS warning handling 547 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 548 # COMMON to gcc and clang 549 WARNING_CFLAGS_JVM="-Wpointer-arith -Wsign-compare -Wunused-function" 550 if ! HOTSPOT_CHECK_JVM_VARIANT(zero); then 551 # Non-zero builds have stricter warnings 552 WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wundef -Wformat=2" 553 fi 554 555 fi 556 if test "x$TOOLCHAIN_TYPE" = xgcc; then 557 WARNING_CFLAGS_JDK="-Wall -Wextra -Wno-unused -Wno-unused-parameter -Wformat=2" 558 WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wunused-value -Woverloaded-virtual -Wreorder" 559 560 if ! HOTSPOT_CHECK_JVM_VARIANT(zero); then 561 # Non-zero builds have stricter warnings 562 WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wreturn-type" 563 fi 564 elif test "x$TOOLCHAIN_TYPE" = xclang; then 565 WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wno-deprecated -Wreorder" 566 if test "x$OPENJDK_TARGET_OS" = xlinux; then 567 WARNING_CFLAGS_JVM="$WARNING_CFLAGS_JVM -Wno-sometimes-uninitialized" 568 WARNING_CFLAGS_JDK="-Wall -Wextra -Wno-unused -Wno-unused-parameter -Wformat=2" 569 fi 570 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 571 WARNING_CFLAGS_JDK_CONLY="-errshort=tags" 572 WARNING_CFLAGS_JDK_CXXONLY="+w" 573 WARNING_CFLAGS_JDK="-errtags=yes -errfmt" 574 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 575 WARNING_CFLAGS="-W3" 576 WARNING_CFLAGS_JDK="-wd4800" 577 WARNING_CFLAGS_JVM="-wd4800" 578 fi 579 580 # Set some additional per-OS defines. 581 582 # Additional macosx handling 583 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 584 OS_CFLAGS="-DMAC_OS_X_VERSION_MIN_REQUIRED=$MACOSX_VERSION_MIN_NODOTS \ 585 -mmacosx-version-min=$MACOSX_VERSION_MIN" 586 587 if test -n "$MACOSX_VERSION_MAX"; then 588 OS_CFLAGS="$OS_CFLAGS \ 589 -DMAC_OS_X_VERSION_MAX_ALLOWED=$MACOSX_VERSION_MAX_NODOTS" 590 fi 591 fi 592 593 # Where does this really belong?? 594 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 595 PICFLAG="-fPIC" 596 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 597 PICFLAG="-KPIC" 598 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 599 # '-qpic' defaults to 'qpic=small'. This means that the compiler generates only 600 # one instruction for accessing the TOC. If the TOC grows larger than 64K, the linker 601 # will have to patch this single instruction with a call to some out-of-order code which 602 # does the load from the TOC. This is of course slower, and we also would have 603 # to use '-bbigtoc' for linking anyway so we could also change the PICFLAG to 'qpic=large'. 604 # With 'qpic=large' the compiler will by default generate a two-instruction sequence which 605 # can be patched directly by the linker and does not require a jump to out-of-order code. 606 # 607 # Since large TOC causes perf. overhead, only pay it where we must. Currently this is 608 # for all libjvm variants (both gtest and normal) but no other binaries. So, build 609 # libjvm with -qpic=large and link with -bbigtoc. 610 JVM_PICFLAG="-qpic=large" 611 JDK_PICFLAG="-qpic" 612 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 613 PICFLAG="" 614 fi 615 616 if test "x$TOOLCHAIN_TYPE" != xxlc; then 617 JVM_PICFLAG="$PICFLAG" 618 JDK_PICFLAG="$PICFLAG" 619 fi 620 621 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 622 # Linking is different on MacOSX 623 JDK_PICFLAG='' 624 if test "x$STATIC_BUILD" = xtrue; then 625 JVM_PICFLAG="" 626 fi 627 fi 628 629 # Optional POSIX functionality needed by the JVM 630 # 631 # Check if clock_gettime is available and in which library. This indicates 632 # availability of CLOCK_MONOTONIC for hotspot. But we don't need to link, so 633 # don't let it update LIBS. 634 save_LIBS="$LIBS" 635 AC_SEARCH_LIBS(clock_gettime, rt, [HAS_CLOCK_GETTIME=true], []) 636 if test "x$LIBS" = "x-lrt "; then 637 CLOCK_GETTIME_IN_LIBRT=true 638 fi 639 LIBS="$save_LIBS" 640 641 if test "x$HAS_CLOCK_GETTIME" = "xtrue"; then 642 OS_CFLAGS_JVM="$OS_CFLAGS_JVM -DSUPPORTS_CLOCK_MONOTONIC" 643 if test "x$CLOCK_GETTIME_IN_LIBRT" = "xtrue"; then 644 OS_CFLAGS_JVM="$OS_CFLAGS_JVM -DNEEDS_LIBRT" 645 fi 646 fi 647 648 # EXPORT 649 AC_SUBST(ADLC_CXXFLAG) 650 ]) 651 652 ################################################################################ 653 # $1 - Either BUILD or TARGET to pick the correct OS/CPU variables to check 654 # conditionals against. 655 # $2 - Optional prefix for each variable defined. 656 AC_DEFUN([FLAGS_SETUP_CFLAGS_CPU_DEP], 657 [ 658 #### CPU DEFINES, these should (in theory) be independent on toolchain 659 660 # Setup target CPU 661 # Setup endianness 662 if test "x$FLAGS_CPU_ENDIAN" = xlittle; then 663 $1_DEFINES_CPU_JVM="-DVM_LITTLE_ENDIAN" 664 fi 665 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then 666 # The macro _LITTLE_ENDIAN needs to be defined the same to avoid the 667 # Sun C compiler warning message: warning: macro redefined: _LITTLE_ENDIAN 668 if test "x$FLAGS_CPU_ENDIAN" = xlittle; then 669 $1_DEFINES_CPU_JDK="-D_LITTLE_ENDIAN=" 670 else 671 $1_DEFINES_CPU_JDK="-D_BIG_ENDIAN=" 672 fi 673 else 674 if test "x$FLAGS_CPU_ENDIAN" = xlittle; then 675 $1_DEFINES_CPU_JDK="-D_LITTLE_ENDIAN" 676 else 677 $1_DEFINES_CPU_JDK="-D_BIG_ENDIAN" 678 fi 679 fi 680 681 # setup CPU bit size 682 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -DARCH='\"$FLAGS_CPU_LEGACY\"' \ 683 -D$FLAGS_CPU_LEGACY" 684 685 if test "x$FLAGS_CPU_BITS" = x64; then 686 # -D_LP64=1 is only set on linux and mac. Setting on windows causes diff in 687 # unpack200.exe. 688 if test "x$FLAGS_OS" = xlinux || test "x$FLAGS_OS" = xmacosx; then 689 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_LP64=1" 690 fi 691 if test "x$FLAGS_OS" != xsolaris && test "x$FLAGS_OS" != xaix; then 692 # Solaris does not have _LP64=1 in the old build. 693 # xlc on AIX defines _LP64=1 by default and issues a warning if we redefine it. 694 $1_DEFINES_CPU_JVM="${$1_DEFINES_CPU_JVM} -D_LP64=1" 695 fi 696 fi 697 698 # toolchain dependend, per-cpu 699 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then 700 if test "x$FLAGS_CPU_ARCH" = xx86; then 701 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -DcpuIntel -Di586 -D$FLAGS_CPU_LEGACY_LIB" 702 fi 703 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 704 if test "x$FLAGS_CPU" = xx86_64; then 705 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_AMD64_ -Damd64" 706 else 707 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_X86_ -Dx86" 708 fi 709 fi 710 711 # CFLAGS PER CPU 712 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 713 # COMMON to gcc and clang 714 if test "x$FLAGS_CPU" = xx86; then 715 # Force compatibility with i586 on 32 bit intel platforms. 716 $1_CFLAGS_CPU="-march=i586" 717 fi 718 fi 719 720 if test "x$TOOLCHAIN_TYPE" = xgcc; then 721 if test "x$FLAGS_CPU" = xarm; then 722 # -Wno-psabi to get rid of annoying "note: the mangling of 'va_list' has changed in GCC 4.4" 723 $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)\"'" 724 $1_CFLAGS_CPU_JVM="-DARM" 725 elif test "x$FLAGS_CPU" = xaarch64; then 726 if test "x$HOTSPOT_TARGET_CPU_PORT" = xarm64; then 727 $1_CFLAGS_CPU_JVM="-fsigned-char -DARM" 728 fi 729 elif test "x$FLAGS_CPU_ARCH" = xppc; then 730 $1_CFLAGS_CPU_JVM="-minsert-sched-nops=regroup_exact -mno-multiple -mno-string" 731 if test "x$FLAGS_CPU" = xppc64; then 732 # -mminimal-toc fixes `relocation truncated to fit' error for gcc 4.1. 733 # Use ppc64 instructions, but schedule for power5 734 $1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -mminimal-toc -mcpu=powerpc64 -mtune=power5" 735 elif test "x$FLAGS_CPU" = xppc64le; then 736 # Little endian machine uses ELFv2 ABI. 737 # Use Power8, this is the first CPU to support PPC64 LE with ELFv2 ABI. 738 $1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -DABI_ELFv2 -mcpu=power8 -mtune=power8" 739 fi 740 elif test "x$FLAGS_CPU" = xs390x; then 741 $1_CFLAGS_CPU="-mbackchain -march=z10" 742 fi 743 744 if test "x$FLAGS_CPU_ARCH" != xarm && test "x$FLAGS_CPU_ARCH" != xppc; then 745 # for all archs except arm and ppc, prevent gcc to omit frame pointer 746 $1_CFLAGS_CPU_JDK="${$1_CFLAGS_CPU_JDK} -fno-omit-frame-pointer" 747 fi 748 749 elif test "x$TOOLCHAIN_TYPE" = xclang; then 750 if test "x$FLAGS_OS" = xlinux; then 751 # ppc test not really needed for clang 752 if test "x$FLAGS_CPU_ARCH" != xarm && test "x$FLAGS_CPU_ARCH" != xppc; then 753 # for all archs except arm and ppc, prevent gcc to omit frame pointer 754 $1_CFLAGS_CPU_JDK="${$1_CFLAGS_CPU_JDK} -fno-omit-frame-pointer" 755 fi 756 fi 757 758 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 759 if test "x$FLAGS_CPU" = xx86_64; then 760 # NOTE: -xregs=no%frameptr is supposed to be default on x64 761 $1_CFLAGS_CPU_JDK="-xregs=no%frameptr" 762 elif test "x$FLAGS_CPU" = xsparcv9; then 763 $1_CFLAGS_CPU_JVM="-xarch=sparc" 764 $1_CFLAGS_CPU_JDK_LIBONLY="-xregs=no%appl" 765 fi 766 767 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 768 if test "x$FLAGS_CPU" = xppc64; then 769 $1_CFLAGS_CPU_JVM="-qarch=ppc64" 770 fi 771 772 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 773 if test "x$FLAGS_CPU" = xx86; then 774 $1_CFLAGS_CPU_JVM="-arch:IA32" 775 elif test "x$OPENJDK_TARGET_CPU" = xx86_64; then 776 if test "x$DEBUG_LEVEL" != xrelease; then 777 # NOTE: This is probably redundant; -homeparams is default on 778 # non-release builds. 779 $1_CFLAGS_CPU_JVM="-homeparams" 780 fi 781 fi 782 fi 783 784 if test "x$TOOLCHAIN_TYPE" = xgcc; then 785 TOOLCHAIN_CHECK_COMPILER_VERSION(VERSION: 6, PREFIX: $2, IF_AT_LEAST: FLAGS_SETUP_GCC6_COMPILER_FLAGS($1)) 786 $1_TOOLCHAIN_CFLAGS="${$1_GCC6_CFLAGS}" 787 788 $1_WARNING_CFLAGS_JVM="-Wno-format-zero-length -Wtype-limits -Wuninitialized" 789 fi 790 791 # EXPORT to API 792 CFLAGS_JVM_COMMON="$ALWAYS_CFLAGS_JVM $ALWAYS_DEFINES_JVM $TOOLCHAIN_CFLAGS_JVM \ 793 $OS_CFLAGS $OS_CFLAGS_JVM $CFLAGS_OS_DEF_JVM $DEBUG_CFLAGS_JVM \ 794 $WARNING_CFLAGS $WARNING_CFLAGS_JVM $JVM_PICFLAG" 795 796 CFLAGS_JDK_COMMON="$ALWAYS_CFLAGS_JDK $ALWAYS_DEFINES_JDK $TOOLCHAIN_CFLAGS_JDK \ 797 $OS_CFLAGS $CFLAGS_OS_DEF_JDK $DEBUG_CFLAGS_JDK $DEBUG_OPTIONS_FLAGS_JDK \ 798 $WARNING_CFLAGS $WARNING_CFLAGS_JDK $DEBUG_SYMBOLS_CFLAGS_JDK" 799 800 # Use ${$2EXTRA_CFLAGS} to block EXTRA_CFLAGS to be added to build flags. 801 # (Currently we don't have any OPENJDK_BUILD_EXTRA_CFLAGS, but that might 802 # change in the future.) 803 804 CFLAGS_JDK_COMMON_CONLY="$TOOLCHAIN_CFLAGS_JDK_CONLY \ 805 $WARNING_CFLAGS_JDK_CONLY ${$2EXTRA_CFLAGS}" 806 CFLAGS_JDK_COMMON_CXXONLY="$ALWAYS_DEFINES_JDK_CXXONLY $TOOLCHAIN_CFLAGS_JDK_CXXONLY \ 807 $WARNING_CFLAGS_JDK_CXXONLY ${$2EXTRA_CXXFLAGS}" 808 809 $1_CFLAGS_JVM="${$1_DEFINES_CPU_JVM} ${$1_CFLAGS_CPU} ${$1_CFLAGS_CPU_JVM} ${$1_TOOLCHAIN_CFLAGS} ${$1_WARNING_CFLAGS_JVM}" 810 $1_CFLAGS_JDK="${$1_DEFINES_CPU_JDK} ${$1_CFLAGS_CPU} ${$1_CFLAGS_CPU_JDK} ${$1_TOOLCHAIN_CFLAGS}" 811 812 $2JVM_CFLAGS="$CFLAGS_JVM_COMMON ${$1_CFLAGS_JVM} ${$2EXTRA_CXXFLAGS}" 813 814 $2CFLAGS_JDKEXE="$CFLAGS_JDK_COMMON $CFLAGS_JDK_COMMON_CONLY ${$1_CFLAGS_JDK}" 815 $2CXXFLAGS_JDKEXE="$CFLAGS_JDK_COMMON $CFLAGS_JDK_COMMON_CXXONLY ${$1_CFLAGS_JDK}" 816 $2CFLAGS_JDKLIB="${$2CFLAGS_JDKEXE} $JDK_PICFLAG ${$1_CFLAGS_CPU_JDK_LIBONLY}" 817 $2CXXFLAGS_JDKLIB="${$2CXXFLAGS_JDKEXE} $JDK_PICFLAG ${$1_CFLAGS_CPU_JDK_LIBONLY}" 818 819 AC_SUBST($2JVM_CFLAGS) 820 AC_SUBST($2CFLAGS_JDKLIB) 821 AC_SUBST($2CFLAGS_JDKEXE) 822 AC_SUBST($2CXXFLAGS_JDKLIB) 823 AC_SUBST($2CXXFLAGS_JDKEXE) 824 ]) 825 826 # FLAGS_SETUP_GCC6_COMPILER_FLAGS([PREFIX]) 827 # Arguments: 828 # $1 - Prefix for each variable defined. 829 AC_DEFUN([FLAGS_SETUP_GCC6_COMPILER_FLAGS], 830 [ 831 # These flags are required for GCC 6 builds as undefined behaviour in OpenJDK code 832 # runs afoul of the more aggressive versions of these optimisations. 833 # Notably, value range propagation now assumes that the this pointer of C++ 834 # member functions is non-null. 835 NO_DELETE_NULL_POINTER_CHECKS_CFLAG="-fno-delete-null-pointer-checks" 836 dnl Argument check is disabled until FLAGS_COMPILER_CHECK_ARGUMENTS handles cross-compilation 837 dnl FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_DELETE_NULL_POINTER_CHECKS_CFLAG -Werror], 838 dnl IF_FALSE: [NO_DELETE_NULL_POINTER_CHECKS_CFLAG=""]) 839 NO_LIFETIME_DSE_CFLAG="-fno-lifetime-dse" 840 dnl Argument check is disabled until FLAGS_COMPILER_CHECK_ARGUMENTS handles cross-compilation 841 dnl FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_LIFETIME_DSE_CFLAG -Werror], 842 dnl IF_FALSE: [NO_LIFETIME_DSE_CFLAG=""]) 843 AC_MSG_NOTICE([GCC >= 6 detected; adding ${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} and ${NO_LIFETIME_DSE_CFLAG}]) 844 $1_GCC6_CFLAGS="${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} ${NO_LIFETIME_DSE_CFLAG}" 845 ]) 846 847 # Documentation on common flags used for solstudio in HIGHEST. 848 # 849 # WARNING: Use of OPTIMIZATION_LEVEL=HIGHEST in your Makefile needs to be 850 # done with care, there are some assumptions below that need to 851 # be understood about the use of pointers, and IEEE behavior. 852 # 853 # -fns: Use non-standard floating point mode (not IEEE 754) 854 # -fsimple: Do some simplification of floating point arithmetic (not IEEE 754) 855 # -fsingle: Use single precision floating point with 'float' 856 # -xalias_level=basic: Assume memory references via basic pointer types do not alias 857 # (Source with excessing pointer casting and data access with mixed 858 # pointer types are not recommended) 859 # -xbuiltin=%all: Use intrinsic or inline versions for math/std functions 860 # (If you expect perfect errno behavior, do not use this) 861 # -xdepend: Loop data dependency optimizations (need -xO3 or higher) 862 # -xrestrict: Pointer parameters to functions do not overlap 863 # (Similar to -xalias_level=basic usage, but less obvious sometimes. 864 # If you pass in multiple pointers to the same data, do not use this) 865 # -xlibmil: Inline some library routines 866 # (If you expect perfect errno behavior, do not use this) 867 # -xlibmopt: Use optimized math routines (CURRENTLY DISABLED) 868 # (If you expect perfect errno behavior, do not use this) 869 # Can cause undefined external on Solaris 8 X86 on __sincos, removing for now