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$TOOLCHAIN_TYPE" = xxlc; then 124 if test "x$XLC_USES_CLANG" = xtrue; then 125 CFLAGS_DEBUG_SYMBOLS="-g1" 126 else 127 CFLAGS_DEBUG_SYMBOLS="-g" 128 fi 129 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 130 CFLAGS_DEBUG_SYMBOLS="-Z7 -d2Zi+" 131 fi 132 133 AC_SUBST(CFLAGS_DEBUG_SYMBOLS) 134 AC_SUBST(ASFLAGS_DEBUG_SYMBOLS) 135 ]) 136 137 AC_DEFUN([FLAGS_SETUP_WARNINGS], 138 [ 139 AC_ARG_ENABLE([warnings-as-errors], [AS_HELP_STRING([--disable-warnings-as-errors], 140 [do not consider native warnings to be an error @<:@enabled@:>@])]) 141 142 # Set default value. 143 if test "x$TOOLCHAIN_TYPE" = xxlc; then 144 WARNINGS_AS_ERRORS=false 145 else 146 WARNINGS_AS_ERRORS=true 147 fi 148 149 AC_MSG_CHECKING([if native warnings are errors]) 150 if test "x$enable_warnings_as_errors" = "xyes"; then 151 AC_MSG_RESULT([yes (explicitly set)]) 152 WARNINGS_AS_ERRORS=true 153 elif test "x$enable_warnings_as_errors" = "xno"; then 154 AC_MSG_RESULT([no (explicitly set)]) 155 WARNINGS_AS_ERRORS=false 156 elif test "x$enable_warnings_as_errors" = "x"; then 157 AC_MSG_RESULT([${WARNINGS_AS_ERRORS} (default)]) 158 else 159 AC_MSG_ERROR([--enable-warnings-as-errors accepts no argument]) 160 fi 161 162 AC_SUBST(WARNINGS_AS_ERRORS) 163 164 case "${TOOLCHAIN_TYPE}" in 165 microsoft) 166 DISABLE_WARNING_PREFIX="-wd" 167 CFLAGS_WARNINGS_ARE_ERRORS="-WX" 168 169 WARNINGS_ENABLE_ALL="-W3" 170 DISABLED_WARNINGS="4800" 171 ;; 172 173 solstudio) 174 DISABLE_WARNING_PREFIX="-erroff=" 175 CFLAGS_WARNINGS_ARE_ERRORS="-errwarn=%all" 176 177 WARNINGS_ENABLE_ALL_CFLAGS="-v" 178 WARNINGS_ENABLE_ALL_CXXFLAGS="+w" 179 180 DISABLED_WARNINGS_C="" 181 DISABLED_WARNINGS_CXX="" 182 ;; 183 184 gcc) 185 DISABLE_WARNING_PREFIX="-Wno-" 186 CFLAGS_WARNINGS_ARE_ERRORS="-Werror" 187 188 # Additional warnings that are not activated by -Wall and -Wextra 189 WARNINGS_ENABLE_ADDITIONAL="-Wpointer-arith -Wsign-compare \ 190 -Wunused-function -Wundef -Wunused-value -Wreturn-type \ 191 -Wtrampolines" 192 WARNINGS_ENABLE_ADDITIONAL_CXX="-Woverloaded-virtual -Wreorder" 193 WARNINGS_ENABLE_ALL_CFLAGS="-Wall -Wextra -Wformat=2 $WARNINGS_ENABLE_ADDITIONAL" 194 WARNINGS_ENABLE_ALL_CXXFLAGS="$WARNINGS_ENABLE_ALL_CFLAGS $WARNINGS_ENABLE_ADDITIONAL_CXX" 195 196 DISABLED_WARNINGS="unused-parameter unused" 197 198 # Repeate the check for the BUILD_CC and BUILD_CXX. Need to also reset 199 # CFLAGS since any target specific flags will likely not work with the 200 # build compiler 201 CC_OLD="$CC" 202 CXX_OLD="$CXX" 203 CC="$BUILD_CC" 204 CXX="$BUILD_CXX" 205 CFLAGS_OLD="$CFLAGS" 206 CFLAGS="" 207 BUILD_CC_DISABLE_WARNING_PREFIX="-Wno-" 208 CC="$CC_OLD" 209 CXX="$CXX_OLD" 210 CFLAGS="$CFLAGS_OLD" 211 ;; 212 213 clang) 214 DISABLE_WARNING_PREFIX="-Wno-" 215 CFLAGS_WARNINGS_ARE_ERRORS="-Werror" 216 217 # Additional warnings that are not activated by -Wall and -Wextra 218 WARNINGS_ENABLE_ADDITIONAL="-Wpointer-arith -Wsign-compare -Wreorder \ 219 -Wunused-function -Wundef -Wunused-value -Woverloaded-virtual" 220 WARNINGS_ENABLE_ALL="-Wall -Wextra -Wformat=2 $WARNINGS_ENABLE_ADDITIONAL" 221 222 DISABLED_WARNINGS="unused-parameter unused" 223 224 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 225 # missing-method-return-type triggers in JavaNativeFoundation framework 226 DISABLED_WARNINGS="$DISABLED_WARNINGS missing-method-return-type" 227 fi 228 229 ;; 230 231 xlc) 232 DISABLE_WARNING_PREFIX="-qsuppress=" 233 CFLAGS_WARNINGS_ARE_ERRORS="-qhalt=w" 234 235 # Possibly a better subset than "all" is "lan:trx:ret:zea:cmp:ret" 236 WARNINGS_ENABLE_ALL="-qinfo=all -qformat=all" 237 DISABLED_WARNINGS="" 238 ;; 239 esac 240 AC_SUBST(DISABLE_WARNING_PREFIX) 241 AC_SUBST(BUILD_CC_DISABLE_WARNING_PREFIX) 242 AC_SUBST(CFLAGS_WARNINGS_ARE_ERRORS) 243 AC_SUBST(DISABLED_WARNINGS) 244 AC_SUBST(DISABLED_WARNINGS_C) 245 AC_SUBST(DISABLED_WARNINGS_CXX) 246 ]) 247 248 AC_DEFUN([FLAGS_SETUP_QUALITY_CHECKS], 249 [ 250 # bounds, memory and behavior checking options 251 if test "x$TOOLCHAIN_TYPE" = xgcc; then 252 case $DEBUG_LEVEL in 253 release ) 254 # no adjustment 255 ;; 256 fastdebug ) 257 # no adjustment 258 ;; 259 slowdebug ) 260 # FIXME: By adding this to C(XX)FLAGS_DEBUG_OPTIONS/JVM_CFLAGS_SYMBOLS it 261 # get's added conditionally on whether we produce debug symbols or not. 262 # This is most likely not really correct. 263 264 # Add runtime stack smashing and undefined behavior checks. 265 CFLAGS_DEBUG_OPTIONS="-fstack-protector-all --param ssp-buffer-size=1" 266 CXXFLAGS_DEBUG_OPTIONS="-fstack-protector-all --param ssp-buffer-size=1" 267 268 JVM_CFLAGS_SYMBOLS="$JVM_CFLAGS_SYMBOLS -fstack-protector-all --param ssp-buffer-size=1" 269 ;; 270 esac 271 fi 272 ]) 273 274 AC_DEFUN([FLAGS_SETUP_OPTIMIZATION], 275 [ 276 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then 277 CC_HIGHEST="-fns -fsimple -fsingle -xbuiltin=%all -xdepend -xrestrict -xlibmil" 278 279 C_O_FLAG_HIGHEST_JVM="-xO4" 280 C_O_FLAG_DEBUG_JVM="" 281 C_O_FLAG_SIZE="" 282 C_O_FLAG_DEBUG="" 283 C_O_FLAG_NONE="" 284 if test "x$OPENJDK_TARGET_CPU_ARCH" = "xx86"; then 285 C_O_FLAG_HIGHEST="-xO4 -Wu,-O4~yz $CC_HIGHEST" 286 C_O_FLAG_HI="-xO4 -Wu,-O4~yz" 287 C_O_FLAG_NORM="-xO2 -Wu,-O2~yz" 288 elif test "x$OPENJDK_TARGET_CPU_ARCH" = "xsparc"; then 289 C_O_FLAG_HIGHEST="-xO4 -Wc,-Qrm-s -Wc,-Qiselect-T0 \ 290 -xprefetch=auto,explicit $CC_HIGHEST" 291 C_O_FLAG_HI="-xO4 -Wc,-Qrm-s -Wc,-Qiselect-T0" 292 C_O_FLAG_NORM="-xO2 -Wc,-Qrm-s -Wc,-Qiselect-T0" 293 fi 294 elif test "x$TOOLCHAIN_TYPE" = xgcc; then 295 C_O_FLAG_HIGHEST_JVM="-O3" 296 C_O_FLAG_HIGHEST="-O3" 297 C_O_FLAG_HI="-O3" 298 C_O_FLAG_NORM="-O2" 299 C_O_FLAG_SIZE="-Os" 300 C_O_FLAG_DEBUG="-O0" 301 C_O_FLAG_DEBUG_JVM="-O0" 302 C_O_FLAG_NONE="-O0" 303 elif test "x$TOOLCHAIN_TYPE" = xclang; then 304 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 305 # On MacOSX we optimize for size, something 306 # we should do for all platforms? 307 C_O_FLAG_HIGHEST_JVM="-Os" 308 C_O_FLAG_HIGHEST="-Os" 309 C_O_FLAG_HI="-Os" 310 C_O_FLAG_NORM="-Os" 311 C_O_FLAG_DEBUG_JVM="" 312 else 313 C_O_FLAG_HIGHEST_JVM="-O3" 314 C_O_FLAG_HIGHEST="-O3" 315 C_O_FLAG_HI="-O3" 316 C_O_FLAG_NORM="-O2" 317 C_O_FLAG_DEBUG_JVM="-O0" 318 fi 319 C_O_FLAG_SIZE="-Os" 320 C_O_FLAG_DEBUG="-O0" 321 C_O_FLAG_NONE="-O0" 322 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 323 C_O_FLAG_HIGHEST_JVM="-O3 -qhot=level=1 -qinline -qinlglue" 324 C_O_FLAG_HIGHEST="-O3 -qhot=level=1 -qinline -qinlglue" 325 C_O_FLAG_HI="-O3 -qinline -qinlglue" 326 C_O_FLAG_NORM="-O2" 327 C_O_FLAG_DEBUG="-qnoopt" 328 # FIXME: Value below not verified. 329 C_O_FLAG_DEBUG_JVM="" 330 C_O_FLAG_NONE="-qnoopt" 331 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 332 C_O_FLAG_HIGHEST_JVM="-O2 -Oy-" 333 C_O_FLAG_HIGHEST="-O2" 334 C_O_FLAG_HI="-O1" 335 C_O_FLAG_NORM="-O1" 336 C_O_FLAG_DEBUG="-Od" 337 C_O_FLAG_DEBUG_JVM="" 338 C_O_FLAG_NONE="-Od" 339 C_O_FLAG_SIZE="-Os" 340 fi 341 342 # Now copy to C++ flags 343 CXX_O_FLAG_HIGHEST_JVM="$C_O_FLAG_HIGHEST_JVM" 344 CXX_O_FLAG_HIGHEST="$C_O_FLAG_HIGHEST" 345 CXX_O_FLAG_HI="$C_O_FLAG_HI" 346 CXX_O_FLAG_NORM="$C_O_FLAG_NORM" 347 CXX_O_FLAG_DEBUG="$C_O_FLAG_DEBUG" 348 CXX_O_FLAG_DEBUG_JVM="$C_O_FLAG_DEBUG_JVM" 349 CXX_O_FLAG_NONE="$C_O_FLAG_NONE" 350 CXX_O_FLAG_SIZE="$C_O_FLAG_SIZE" 351 352 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then 353 # In solstudio, also add this to C (but not C++) flags... 354 C_O_FLAG_HIGHEST="$C_O_FLAG_HIGHEST -xalias_level=basic" 355 fi 356 357 # Adjust optimization flags according to debug level. 358 case $DEBUG_LEVEL in 359 release ) 360 # no adjustment 361 ;; 362 fastdebug ) 363 # Not quite so much optimization 364 C_O_FLAG_HI="$C_O_FLAG_NORM" 365 CXX_O_FLAG_HI="$CXX_O_FLAG_NORM" 366 ;; 367 slowdebug ) 368 # Disable optimization 369 C_O_FLAG_HIGHEST_JVM="$C_O_FLAG_DEBUG_JVM" 370 C_O_FLAG_HIGHEST="$C_O_FLAG_DEBUG" 371 C_O_FLAG_HI="$C_O_FLAG_DEBUG" 372 C_O_FLAG_NORM="$C_O_FLAG_DEBUG" 373 C_O_FLAG_SIZE="$C_O_FLAG_DEBUG" 374 CXX_O_FLAG_HIGHEST_JVM="$CXX_O_FLAG_DEBUG_JVM" 375 CXX_O_FLAG_HIGHEST="$CXX_O_FLAG_DEBUG" 376 CXX_O_FLAG_HI="$CXX_O_FLAG_DEBUG" 377 CXX_O_FLAG_NORM="$CXX_O_FLAG_DEBUG" 378 CXX_O_FLAG_SIZE="$CXX_O_FLAG_DEBUG" 379 ;; 380 esac 381 382 AC_SUBST(C_O_FLAG_HIGHEST_JVM) 383 AC_SUBST(C_O_FLAG_HIGHEST) 384 AC_SUBST(C_O_FLAG_HI) 385 AC_SUBST(C_O_FLAG_NORM) 386 AC_SUBST(C_O_FLAG_NONE) 387 AC_SUBST(C_O_FLAG_SIZE) 388 AC_SUBST(CXX_O_FLAG_HIGHEST_JVM) 389 AC_SUBST(CXX_O_FLAG_HIGHEST) 390 AC_SUBST(CXX_O_FLAG_HI) 391 AC_SUBST(CXX_O_FLAG_NORM) 392 AC_SUBST(CXX_O_FLAG_NONE) 393 AC_SUBST(CXX_O_FLAG_SIZE) 394 ]) 395 396 AC_DEFUN([FLAGS_SETUP_CFLAGS], 397 [ 398 ### CFLAGS 399 400 FLAGS_SETUP_CFLAGS_HELPER 401 402 FLAGS_OS=$OPENJDK_TARGET_OS 403 FLAGS_OS_TYPE=$OPENJDK_TARGET_OS_TYPE 404 FLAGS_CPU=$OPENJDK_TARGET_CPU 405 FLAGS_CPU_ARCH=$OPENJDK_TARGET_CPU_ARCH 406 FLAGS_CPU_BITS=$OPENJDK_TARGET_CPU_BITS 407 FLAGS_CPU_ENDIAN=$OPENJDK_TARGET_CPU_ENDIAN 408 FLAGS_CPU_LEGACY=$OPENJDK_TARGET_CPU_LEGACY 409 FLAGS_CPU_LEGACY_LIB=$OPENJDK_TARGET_CPU_LEGACY_LIB 410 411 FLAGS_SETUP_CFLAGS_CPU_DEP([TARGET]) 412 413 FLAGS_OS=$OPENJDK_BUILD_OS 414 FLAGS_OS_TYPE=$OPENJDK_BUILD_OS_TYPE 415 FLAGS_CPU=$OPENJDK_BUILD_CPU 416 FLAGS_CPU_ARCH=$OPENJDK_BUILD_CPU_ARCH 417 FLAGS_CPU_BITS=$OPENJDK_BUILD_CPU_BITS 418 FLAGS_CPU_ENDIAN=$OPENJDK_BUILD_CPU_ENDIAN 419 FLAGS_CPU_LEGACY=$OPENJDK_BUILD_CPU_LEGACY 420 FLAGS_CPU_LEGACY_LIB=$OPENJDK_BUILD_CPU_LEGACY_LIB 421 422 FLAGS_SETUP_CFLAGS_CPU_DEP([BUILD], [OPENJDK_BUILD_], [BUILD_]) 423 ]) 424 425 ################################################################################ 426 # platform independent 427 AC_DEFUN([FLAGS_SETUP_CFLAGS_HELPER], 428 [ 429 #### OS DEFINES, these should be independent on toolchain 430 if test "x$OPENJDK_TARGET_OS" = xlinux; then 431 CFLAGS_OS_DEF_JVM="-DLINUX" 432 CFLAGS_OS_DEF_JDK="-D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE" 433 elif test "x$OPENJDK_TARGET_OS" = xsolaris; then 434 CFLAGS_OS_DEF_JVM="-DSOLARIS" 435 CFLAGS_OS_DEF_JDK="-D__solaris__" 436 elif test "x$OPENJDK_TARGET_OS" = xmacosx; then 437 CFLAGS_OS_DEF_JVM="-D_ALLBSD_SOURCE -D_DARWIN_C_SOURCE -D_XOPEN_SOURCE" 438 CFLAGS_OS_DEF_JDK="-D_ALLBSD_SOURCE -D_DARWIN_UNLIMITED_SELECT" 439 elif test "x$OPENJDK_TARGET_OS" = xaix; then 440 CFLAGS_OS_DEF_JVM="-DAIX" 441 elif test "x$OPENJDK_TARGET_OS" = xbsd; then 442 CFLAGS_OS_DEF_JDK="-D_ALLBSD_SOURCE" 443 elif test "x$OPENJDK_TARGET_OS" = xwindows; then 444 CFLAGS_OS_DEF_JVM="-D_WINDOWS -DWIN32 -D_JNI_IMPLEMENTATION_" 445 fi 446 447 CFLAGS_OS_DEF_JDK="$CFLAGS_OS_DEF_JDK -D$OPENJDK_TARGET_OS_UPPERCASE" 448 449 #### GLOBAL DEFINES 450 # Set some common defines. These works for all compilers, but assume 451 # -D is universally accepted. 452 453 # Always enable optional macros for VM. 454 ALWAYS_CFLAGS_JVM="-D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS" 455 456 # Setup some hard coded includes 457 ALWAYS_CFLAGS_JDK=" \ 458 -I\$(SUPPORT_OUTPUTDIR)/modules_include/java.base \ 459 -I\$(SUPPORT_OUTPUTDIR)/modules_include/java.base/\$(OPENJDK_TARGET_OS_INCLUDE_SUBDIR) \ 460 -I${TOPDIR}/src/java.base/share/native/libjava \ 461 -I${TOPDIR}/src/java.base/$OPENJDK_TARGET_OS_TYPE/native/libjava \ 462 -I${TOPDIR}/src/hotspot/share/include \ 463 -I${TOPDIR}/src/hotspot/os/${HOTSPOT_TARGET_OS_TYPE}/include" 464 465 ############################################################################### 466 467 # Adjust flags according to debug level. 468 # Setup debug/release defines 469 if test "x$DEBUG_LEVEL" = xrelease; then 470 DEBUG_CFLAGS_JDK="-DNDEBUG" 471 if test "x$OPENJDK_TARGET_OS" = xsolaris; then 472 DEBUG_CFLAGS_JDK="$DEBUG_CFLAGS_JDK -DTRIMMED" 473 fi 474 else 475 DEBUG_CFLAGS_JDK="-DDEBUG" 476 477 if test "x$TOOLCHAIN_TYPE" = xxlc; then 478 # We need '-qminimaltoc' or '-qpic=large -bbigtoc' if the TOC overflows. 479 # Hotspot now overflows its 64K TOC (currently only for debug), 480 # so for debug we build with '-qpic=large -bbigtoc'. 481 DEBUG_CFLAGS_JVM="-qpic=large" 482 fi 483 fi 484 485 if test "x$DEBUG_LEVEL" != xrelease; then 486 DEBUG_OPTIONS_FLAGS_JDK="$CFLAGS_DEBUG_OPTIONS" 487 DEBUG_SYMBOLS_CFLAGS_JDK="$CFLAGS_DEBUG_SYMBOLS" 488 fi 489 490 #### TOOLCHAIN DEFINES 491 492 if test "x$TOOLCHAIN_TYPE" = xgcc; then 493 ALWAYS_DEFINES_JVM="-D_GNU_SOURCE -D_REENTRANT" 494 elif test "x$TOOLCHAIN_TYPE" = xclang; then 495 ALWAYS_DEFINES_JVM="-D_GNU_SOURCE" 496 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 497 ALWAYS_DEFINES_JVM="-DSPARC_WORKS -D_Crun_inline_placement" 498 ALWAYS_DEFINES_JDK="-DTRACING -DMACRO_MEMSYS_OPS -DBREAKPTS" 499 ALWAYS_DEFINES_JDK_CXXONLY="-DCC_NOEX" 500 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 501 ALWAYS_DEFINES_JVM="-D_REENTRANT" 502 ALWAYS_DEFINES_JDK="-D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE -DSTDC" 503 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 504 ALWAYS_DEFINES_JDK="-DWIN32_LEAN_AND_MEAN -D_CRT_SECURE_NO_DEPRECATE \ 505 -D_CRT_NONSTDC_NO_DEPRECATE -DWIN32 -DIAL" 506 ALWAYS_DEFINES_JVM="-DNOMINMAX -DWIN32_LEAN_AND_MEAN" 507 fi 508 509 ############################################################################### 510 # 511 # 512 # CFLAGS BASIC 513 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 514 # COMMON to gcc and clang 515 TOOLCHAIN_CFLAGS_JVM="-pipe -fno-rtti -fno-exceptions \ 516 -fvisibility=hidden -fno-strict-aliasing -fno-omit-frame-pointer" 517 fi 518 519 if test "x$TOOLCHAIN_TYPE" = xgcc; then 520 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -fcheck-new -fstack-protector" 521 TOOLCHAIN_CFLAGS_JDK="-pipe -fstack-protector" 522 # technically NOT for CXX (but since this gives *worse* performance, use 523 # no-strict-aliasing everywhere!) 524 TOOLCHAIN_CFLAGS_JDK_CONLY="-fno-strict-aliasing" 525 526 elif test "x$TOOLCHAIN_TYPE" = xclang; then 527 # Restrict the debug information created by Clang to avoid 528 # too big object files and speed the build up a little bit 529 # (see http://llvm.org/bugs/show_bug.cgi?id=7554) 530 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -flimit-debug-info" 531 532 # In principle the stack alignment below is cpu- and ABI-dependent and 533 # should agree with values of StackAlignmentInBytes in various 534 # src/hotspot/cpu/*/globalDefinitions_*.hpp files, but this value currently 535 # works for all platforms. 536 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -mno-omit-leaf-frame-pointer -mstack-alignment=16" 537 538 if test "x$OPENJDK_TARGET_OS" = xlinux; then 539 TOOLCHAIN_CFLAGS_JDK="-pipe" 540 TOOLCHAIN_CFLAGS_JDK_CONLY="-fno-strict-aliasing" # technically NOT for CXX 541 fi 542 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 543 TOOLCHAIN_FLAGS="-errtags -errfmt" 544 TOOLCHAIN_CFLAGS="-errshort=tags" 545 546 TOOLCHAIN_CFLAGS_JDK="-mt $TOOLCHAIN_FLAGS" 547 TOOLCHAIN_CFLAGS_JDK_CONLY="-xCC -Xa -W0,-noglobal $TOOLCHAIN_CFLAGS" # C only 548 TOOLCHAIN_CFLAGS_JDK_CXXONLY="-features=no%except -norunpath -xnolib" # CXX only 549 TOOLCHAIN_CFLAGS_JVM="-template=no%extdef -features=no%split_init \ 550 -library=stlport4 -mt -features=no%except $TOOLCHAIN_FLAGS" 551 if test "x$DEBUG_LEVEL" = xslowdebug; then 552 # Previously -g was used instead of -g0 for slowdebug; this is equivalent 553 # to setting +d. 554 TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM +d" 555 fi 556 557 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 558 # Suggested additions: -qsrcmsg to get improved error reporting 559 TOOLCHAIN_CFLAGS_JDK="-qchars=signed -qfullpath -qsaveopt -qstackprotect" # add on both CFLAGS 560 TOOLCHAIN_CFLAGS_JVM="-qtune=balanced \ 561 -qalias=noansi -qstrict -qtls=default -qlanglvl=c99vla \ 562 -qlanglvl=noredefmac -qnortti -qnoeh -qignerrno -qstackprotect" 563 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 564 TOOLCHAIN_CFLAGS_JVM="-nologo -MD -MP" 565 TOOLCHAIN_CFLAGS_JDK="-nologo -MD -Zc:wchar_t-" 566 fi 567 568 # CFLAGS WARNINGS STUFF 569 # Set JVM_CFLAGS warning handling 570 if test "x$TOOLCHAIN_TYPE" = xgcc; then 571 WARNING_CFLAGS_JDK_CONLY="$WARNINGS_ENABLE_ALL_CFLAGS" 572 WARNING_CFLAGS_JDK_CXXONLY="$WARNINGS_ENABLE_ALL_CXXFLAGS" 573 WARNING_CFLAGS_JVM="$WARNINGS_ENABLE_ALL_CXXFLAGS" 574 575 elif test "x$TOOLCHAIN_TYPE" = xclang; then 576 WARNING_CFLAGS="$WARNINGS_ENABLE_ALL" 577 578 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 579 WARNING_CFLAGS_JDK_CONLY="$WARNINGS_ENABLE_ALL_CFLAGS" 580 WARNING_CFLAGS_JDK_CXXONLY="$WARNINGS_ENABLE_ALL_CXXFLAGS" 581 WARNING_CFLAGS_JVM="$WARNINGS_ENABLE_ALL_CXXFLAGS" 582 583 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 584 WARNING_CFLAGS="$WARNINGS_ENABLE_ALL" 585 586 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 587 WARNING_CFLAGS="" # currently left empty 588 fi 589 590 # Set some additional per-OS defines. 591 592 # Additional macosx handling 593 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 594 OS_CFLAGS="-DMAC_OS_X_VERSION_MIN_REQUIRED=$MACOSX_VERSION_MIN_NODOTS \ 595 -mmacosx-version-min=$MACOSX_VERSION_MIN" 596 597 if test -n "$MACOSX_VERSION_MAX"; then 598 OS_CFLAGS="$OS_CFLAGS \ 599 -DMAC_OS_X_VERSION_MAX_ALLOWED=$MACOSX_VERSION_MAX_NODOTS" 600 fi 601 fi 602 603 # Where does this really belong?? 604 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 605 PICFLAG="-fPIC" 606 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 607 PICFLAG="-KPIC" 608 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 609 # '-qpic' defaults to 'qpic=small'. This means that the compiler generates only 610 # one instruction for accessing the TOC. If the TOC grows larger than 64K, the linker 611 # will have to patch this single instruction with a call to some out-of-order code which 612 # does the load from the TOC. This is of course slower, and we also would have 613 # to use '-bbigtoc' for linking anyway so we could also change the PICFLAG to 'qpic=large'. 614 # With 'qpic=large' the compiler will by default generate a two-instruction sequence which 615 # can be patched directly by the linker and does not require a jump to out-of-order code. 616 # 617 # Since large TOC causes perf. overhead, only pay it where we must. Currently this is 618 # for all libjvm variants (both gtest and normal) but no other binaries. So, build 619 # libjvm with -qpic=large and link with -bbigtoc. 620 JVM_PICFLAG="-qpic=large" 621 JDK_PICFLAG="-qpic" 622 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 623 PICFLAG="" 624 fi 625 626 if test "x$TOOLCHAIN_TYPE" != xxlc; then 627 JVM_PICFLAG="$PICFLAG" 628 JDK_PICFLAG="$PICFLAG" 629 fi 630 631 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 632 # Linking is different on MacOSX 633 JDK_PICFLAG='' 634 if test "x$STATIC_BUILD" = xtrue; then 635 JVM_PICFLAG="" 636 fi 637 fi 638 639 # Optional POSIX functionality needed by the JVM 640 # 641 # Check if clock_gettime is available and in which library. This indicates 642 # availability of CLOCK_MONOTONIC for hotspot. But we don't need to link, so 643 # don't let it update LIBS. 644 save_LIBS="$LIBS" 645 AC_SEARCH_LIBS(clock_gettime, rt, [HAS_CLOCK_GETTIME=true], []) 646 if test "x$LIBS" = "x-lrt "; then 647 CLOCK_GETTIME_IN_LIBRT=true 648 fi 649 LIBS="$save_LIBS" 650 651 if test "x$HAS_CLOCK_GETTIME" = "xtrue"; then 652 OS_CFLAGS_JVM="$OS_CFLAGS_JVM -DSUPPORTS_CLOCK_MONOTONIC" 653 if test "x$CLOCK_GETTIME_IN_LIBRT" = "xtrue"; then 654 OS_CFLAGS_JVM="$OS_CFLAGS_JVM -DNEEDS_LIBRT" 655 fi 656 fi 657 ]) 658 659 ################################################################################ 660 # $1 - Either BUILD or TARGET to pick the correct OS/CPU variables to check 661 # conditionals against. 662 # $2 - Optional prefix for each variable defined. 663 # $3 - Optional prefix for compiler variables (either BUILD_ or nothing). 664 AC_DEFUN([FLAGS_SETUP_CFLAGS_CPU_DEP], 665 [ 666 #### CPU DEFINES, these should (in theory) be independent on toolchain 667 668 # Setup target CPU 669 # Setup endianness 670 if test "x$FLAGS_CPU_ENDIAN" = xlittle; then 671 $1_DEFINES_CPU_JVM="-DVM_LITTLE_ENDIAN" 672 fi 673 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then 674 # The macro _LITTLE_ENDIAN needs to be defined the same to avoid the 675 # Sun C compiler warning message: warning: macro redefined: _LITTLE_ENDIAN 676 if test "x$FLAGS_CPU_ENDIAN" = xlittle; then 677 $1_DEFINES_CPU_JDK="-D_LITTLE_ENDIAN=" 678 else 679 $1_DEFINES_CPU_JDK="-D_BIG_ENDIAN=" 680 fi 681 else 682 if test "x$FLAGS_CPU_ENDIAN" = xlittle; then 683 $1_DEFINES_CPU_JDK="-D_LITTLE_ENDIAN" 684 else 685 $1_DEFINES_CPU_JDK="-D_BIG_ENDIAN" 686 fi 687 fi 688 689 # setup CPU bit size 690 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -DARCH='\"$FLAGS_CPU_LEGACY\"' \ 691 -D$FLAGS_CPU_LEGACY" 692 693 if test "x$FLAGS_CPU_BITS" = x64; then 694 # -D_LP64=1 is only set on linux and mac. Setting on windows causes diff in 695 # unpack200.exe. 696 if test "x$FLAGS_OS" = xlinux || test "x$FLAGS_OS" = xmacosx; then 697 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_LP64=1" 698 fi 699 if test "x$FLAGS_OS" != xsolaris && test "x$FLAGS_OS" != xaix; then 700 # Solaris does not have _LP64=1 in the old build. 701 # xlc on AIX defines _LP64=1 by default and issues a warning if we redefine it. 702 $1_DEFINES_CPU_JVM="${$1_DEFINES_CPU_JVM} -D_LP64=1" 703 fi 704 fi 705 706 # toolchain dependend, per-cpu 707 if test "x$TOOLCHAIN_TYPE" = xsolstudio; then 708 if test "x$FLAGS_CPU_ARCH" = xx86; then 709 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -DcpuIntel -Di586 -D$FLAGS_CPU_LEGACY_LIB" 710 fi 711 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 712 if test "x$FLAGS_CPU" = xx86_64; then 713 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_AMD64_ -Damd64" 714 else 715 $1_DEFINES_CPU_JDK="${$1_DEFINES_CPU_JDK} -D_X86_ -Dx86" 716 fi 717 fi 718 719 # CFLAGS PER CPU 720 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 721 # COMMON to gcc and clang 722 if test "x$FLAGS_CPU" = xx86; then 723 # Force compatibility with i586 on 32 bit intel platforms. 724 $1_CFLAGS_CPU="-march=i586" 725 fi 726 fi 727 728 if test "x$TOOLCHAIN_TYPE" = xgcc; then 729 if test "x$FLAGS_CPU" = xarm; then 730 # -Wno-psabi to get rid of annoying "note: the mangling of 'va_list' has changed in GCC 4.4" 731 $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)\"'" 732 $1_CFLAGS_CPU_JVM="-DARM" 733 elif test "x$FLAGS_CPU_ARCH" = xppc; then 734 $1_CFLAGS_CPU_JVM="-minsert-sched-nops=regroup_exact -mno-multiple -mno-string" 735 if test "x$FLAGS_CPU" = xppc64; then 736 # -mminimal-toc fixes `relocation truncated to fit' error for gcc 4.1. 737 # Use ppc64 instructions, but schedule for power5 738 $1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -mminimal-toc -mcpu=powerpc64 -mtune=power5" 739 elif test "x$FLAGS_CPU" = xppc64le; then 740 # Little endian machine uses ELFv2 ABI. 741 # Use Power8, this is the first CPU to support PPC64 LE with ELFv2 ABI. 742 $1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -DABI_ELFv2 -mcpu=power8 -mtune=power8" 743 fi 744 elif test "x$FLAGS_CPU" = xs390x; then 745 $1_CFLAGS_CPU="-mbackchain -march=z10" 746 fi 747 748 if test "x$FLAGS_CPU_ARCH" != xarm && test "x$FLAGS_CPU_ARCH" != xppc; then 749 # for all archs except arm and ppc, prevent gcc to omit frame pointer 750 $1_CFLAGS_CPU_JDK="${$1_CFLAGS_CPU_JDK} -fno-omit-frame-pointer" 751 fi 752 753 $1_CXXSTD_CXXFLAG="-std=gnu++98" 754 FLAGS_CXX_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${$1_CXXSTD_CXXFLAG} -Werror], 755 PREFIX: $3, IF_FALSE: [$1_CXXSTD_CXXFLAG=""]) 756 $1_TOOLCHAIN_CFLAGS_JDK_CXXONLY="${$1_CXXSTD_CXXFLAG}" 757 $1_TOOLCHAIN_CFLAGS_JVM="${$1_TOOLCHAIN_CFLAGS_JVM} ${$1_CXXSTD_CXXFLAG}" 758 $2ADLC_CXXFLAG="${$1_CXXSTD_CXXFLAG}" 759 760 elif test "x$TOOLCHAIN_TYPE" = xclang; then 761 if test "x$FLAGS_OS" = xlinux; then 762 # ppc test not really needed for clang 763 if test "x$FLAGS_CPU_ARCH" != xarm && test "x$FLAGS_CPU_ARCH" != xppc; then 764 # for all archs except arm and ppc, prevent gcc to omit frame pointer 765 $1_CFLAGS_CPU_JDK="${$1_CFLAGS_CPU_JDK} -fno-omit-frame-pointer" 766 fi 767 fi 768 769 elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then 770 if test "x$FLAGS_CPU" = xx86_64; then 771 # NOTE: -xregs=no%frameptr is supposed to be default on x64 772 $1_CFLAGS_CPU_JDK="-xregs=no%frameptr" 773 elif test "x$FLAGS_CPU" = xsparcv9; then 774 $1_CFLAGS_CPU_JVM="-xarch=sparc" 775 $1_CFLAGS_CPU_JDK_LIBONLY="-xregs=no%appl" 776 fi 777 778 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 779 if test "x$FLAGS_CPU" = xppc64; then 780 $1_CFLAGS_CPU_JVM="-qarch=ppc64" 781 fi 782 783 elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 784 if test "x$FLAGS_CPU" = xx86; then 785 $1_CFLAGS_CPU_JVM="-arch:IA32" 786 elif test "x$OPENJDK_TARGET_CPU" = xx86_64; then 787 if test "x$DEBUG_LEVEL" != xrelease; then 788 # NOTE: This is probably redundant; -homeparams is default on 789 # non-release builds. 790 $1_CFLAGS_CPU_JVM="-homeparams" 791 fi 792 fi 793 fi 794 795 if test "x$TOOLCHAIN_TYPE" = xgcc; then 796 FLAGS_SETUP_GCC6_COMPILER_FLAGS($1, $3) 797 $1_TOOLCHAIN_CFLAGS="${$1_GCC6_CFLAGS}" 798 799 $1_WARNING_CFLAGS_JVM="-Wno-format-zero-length -Wtype-limits -Wuninitialized" 800 fi 801 802 # EXPORT to API 803 CFLAGS_JVM_COMMON="$ALWAYS_CFLAGS_JVM $ALWAYS_DEFINES_JVM \ 804 $TOOLCHAIN_CFLAGS_JVM ${$1_TOOLCHAIN_CFLAGS_JVM} \ 805 $OS_CFLAGS $OS_CFLAGS_JVM $CFLAGS_OS_DEF_JVM $DEBUG_CFLAGS_JVM \ 806 $WARNING_CFLAGS $WARNING_CFLAGS_JVM $JVM_PICFLAG" 807 808 CFLAGS_JDK_COMMON="$ALWAYS_CFLAGS_JDK $ALWAYS_DEFINES_JDK $TOOLCHAIN_CFLAGS_JDK \ 809 $OS_CFLAGS $CFLAGS_OS_DEF_JDK $DEBUG_CFLAGS_JDK $DEBUG_OPTIONS_FLAGS_JDK \ 810 $WARNING_CFLAGS $WARNING_CFLAGS_JDK $DEBUG_SYMBOLS_CFLAGS_JDK" 811 812 # Use ${$2EXTRA_CFLAGS} to block EXTRA_CFLAGS to be added to build flags. 813 # (Currently we don't have any OPENJDK_BUILD_EXTRA_CFLAGS, but that might 814 # change in the future.) 815 816 CFLAGS_JDK_COMMON_CONLY="$TOOLCHAIN_CFLAGS_JDK_CONLY \ 817 $WARNING_CFLAGS_JDK_CONLY ${$2EXTRA_CFLAGS}" 818 CFLAGS_JDK_COMMON_CXXONLY="$ALWAYS_DEFINES_JDK_CXXONLY \ 819 $TOOLCHAIN_CFLAGS_JDK_CXXONLY \ 820 ${$1_TOOLCHAIN_CFLAGS_JDK_CXXONLY} \ 821 $WARNING_CFLAGS_JDK_CXXONLY ${$2EXTRA_CXXFLAGS}" 822 823 $1_CFLAGS_JVM="${$1_DEFINES_CPU_JVM} ${$1_CFLAGS_CPU} ${$1_CFLAGS_CPU_JVM} ${$1_TOOLCHAIN_CFLAGS} ${$1_WARNING_CFLAGS_JVM}" 824 $1_CFLAGS_JDK="${$1_DEFINES_CPU_JDK} ${$1_CFLAGS_CPU} ${$1_CFLAGS_CPU_JDK} ${$1_TOOLCHAIN_CFLAGS}" 825 826 $2JVM_CFLAGS="$CFLAGS_JVM_COMMON ${$1_CFLAGS_JVM} ${$2EXTRA_CXXFLAGS}" 827 828 $2CFLAGS_JDKEXE="$CFLAGS_JDK_COMMON $CFLAGS_JDK_COMMON_CONLY ${$1_CFLAGS_JDK}" 829 $2CXXFLAGS_JDKEXE="$CFLAGS_JDK_COMMON $CFLAGS_JDK_COMMON_CXXONLY ${$1_CFLAGS_JDK}" 830 $2CFLAGS_JDKLIB="${$2CFLAGS_JDKEXE} $JDK_PICFLAG ${$1_CFLAGS_CPU_JDK_LIBONLY}" 831 $2CXXFLAGS_JDKLIB="${$2CXXFLAGS_JDKEXE} $JDK_PICFLAG ${$1_CFLAGS_CPU_JDK_LIBONLY}" 832 833 AC_SUBST($2JVM_CFLAGS) 834 AC_SUBST($2CFLAGS_JDKLIB) 835 AC_SUBST($2CFLAGS_JDKEXE) 836 AC_SUBST($2CXXFLAGS_JDKLIB) 837 AC_SUBST($2CXXFLAGS_JDKEXE) 838 AC_SUBST($2ADLC_CXXFLAG) 839 840 COMPILER_FP_CONTRACT_OFF_FLAG="-ffp-contract=off" 841 # Check that the compiler supports -ffp-contract=off flag 842 # Set FDLIBM_CFLAGS to -ffp-contract=off if it does. Empty 843 # otherwise. 844 # These flags are required for GCC-based builds of 845 # fdlibm with optimization without losing precision. 846 # Notably, -ffp-contract=off needs to be added for GCC >= 4.6. 847 if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 848 FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${COMPILER_FP_CONTRACT_OFF_FLAG}], 849 PREFIX: $3, 850 IF_TRUE: [$2FDLIBM_CFLAGS=${COMPILER_FP_CONTRACT_OFF_FLAG}], 851 IF_FALSE: [$2FDLIBM_CFLAGS=""]) 852 fi 853 AC_SUBST($2FDLIBM_CFLAGS) 854 ]) 855 856 # FLAGS_SETUP_GCC6_COMPILER_FLAGS([PREFIX]) 857 # Arguments: 858 # $1 - Prefix for each variable defined. 859 # $2 - Prefix for compiler variables (either BUILD_ or nothing). 860 AC_DEFUN([FLAGS_SETUP_GCC6_COMPILER_FLAGS], 861 [ 862 # These flags are required for GCC 6 builds as undefined behaviour in OpenJDK code 863 # runs afoul of the more aggressive versions of these optimisations. 864 # Notably, value range propagation now assumes that the this pointer of C++ 865 # member functions is non-null. 866 NO_DELETE_NULL_POINTER_CHECKS_CFLAG="-fno-delete-null-pointer-checks" 867 FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_DELETE_NULL_POINTER_CHECKS_CFLAG -Werror], 868 PREFIX: $2, IF_FALSE: [NO_DELETE_NULL_POINTER_CHECKS_CFLAG=""]) 869 NO_LIFETIME_DSE_CFLAG="-fno-lifetime-dse" 870 FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$NO_LIFETIME_DSE_CFLAG -Werror], 871 PREFIX: $2, IF_FALSE: [NO_LIFETIME_DSE_CFLAG=""]) 872 $1_GCC6_CFLAGS="${NO_DELETE_NULL_POINTER_CHECKS_CFLAG} ${NO_LIFETIME_DSE_CFLAG}" 873 ]) 874 875 # Documentation on common flags used for solstudio in HIGHEST. 876 # 877 # WARNING: Use of OPTIMIZATION_LEVEL=HIGHEST in your Makefile needs to be 878 # done with care, there are some assumptions below that need to 879 # be understood about the use of pointers, and IEEE behavior. 880 # 881 # -fns: Use non-standard floating point mode (not IEEE 754) 882 # -fsimple: Do some simplification of floating point arithmetic (not IEEE 754) 883 # -fsingle: Use single precision floating point with 'float' 884 # -xalias_level=basic: Assume memory references via basic pointer types do not alias 885 # (Source with excessing pointer casting and data access with mixed 886 # pointer types are not recommended) 887 # -xbuiltin=%all: Use intrinsic or inline versions for math/std functions 888 # (If you expect perfect errno behavior, do not use this) 889 # -xdepend: Loop data dependency optimizations (need -xO3 or higher) 890 # -xrestrict: Pointer parameters to functions do not overlap 891 # (Similar to -xalias_level=basic usage, but less obvious sometimes. 892 # If you pass in multiple pointers to the same data, do not use this) 893 # -xlibmil: Inline some library routines 894 # (If you expect perfect errno behavior, do not use this) 895 # -xlibmopt: Use optimized math routines (CURRENTLY DISABLED) 896 # (If you expect perfect errno behavior, do not use this) 897 # Can cause undefined external on Solaris 8 X86 on __sincos, removing for now