1 # 2 # Copyright (c) 2011, 2020, 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 m4_include([flags-cflags.m4]) 27 m4_include([flags-ldflags.m4]) 28 m4_include([flags-other.m4]) 29 30 ################################################################################ 31 # 32 # Setup ABI profile (for arm) 33 # 34 AC_DEFUN([FLAGS_SETUP_ABI_PROFILE], 35 [ 36 AC_ARG_WITH(abi-profile, [AS_HELP_STRING([--with-abi-profile], 37 [specify ABI profile for ARM builds (arm-vfp-sflt,arm-vfp-hflt,arm-sflt, armv5-vfp-sflt,armv6-vfp-hflt,aarch64) @<:@toolchain dependent@:>@ ])]) 38 39 if test "x$with_abi_profile" != x; then 40 if test "x$OPENJDK_TARGET_CPU" != xarm && \ 41 test "x$OPENJDK_TARGET_CPU" != xaarch64; then 42 AC_MSG_ERROR([--with-abi-profile only available on arm/aarch64]) 43 fi 44 45 OPENJDK_TARGET_ABI_PROFILE=$with_abi_profile 46 AC_MSG_CHECKING([for ABI profle]) 47 AC_MSG_RESULT([$OPENJDK_TARGET_ABI_PROFILE]) 48 49 # --- Arm-sflt CFLAGS and ASFLAGS --- 50 # Armv5te is required for assembler, because pld insn used in arm32 hotspot is only in v5E and above. 51 # However, there is also a GCC bug which generates unaligned strd/ldrd instructions on armv5te: 52 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82445, and it was fixed in gcc 7.1. 53 # The resulting compromise is to enable v5TE for assembler and let GCC generate code for v5T. 54 if test "x$OPENJDK_TARGET_ABI_PROFILE" = xarm-vfp-sflt; then 55 ARM_FLOAT_TYPE=vfp-sflt 56 ARM_ARCH_TYPE_FLAGS='-march=armv7-a -mthumb' 57 ARM_ARCH_TYPE_ASFLAGS='-march=armv7-a -mthumb' 58 elif test "x$OPENJDK_TARGET_ABI_PROFILE" = xarm-vfp-hflt; then 59 ARM_FLOAT_TYPE=vfp-hflt 60 ARM_ARCH_TYPE_FLAGS='-march=armv7-a -mthumb' 61 ARM_ARCH_TYPE_ASFLAGS='-march=armv7-a -mthumb' 62 elif test "x$OPENJDK_TARGET_ABI_PROFILE" = xarm-sflt; then 63 ARM_FLOAT_TYPE=sflt 64 ARM_ARCH_TYPE_FLAGS='-march=armv5t -marm' 65 ARM_ARCH_TYPE_ASFLAGS='-march=armv5te' 66 elif test "x$OPENJDK_TARGET_ABI_PROFILE" = xarmv5-vfp-sflt; then 67 ARM_FLOAT_TYPE=vfp-sflt 68 ARM_ARCH_TYPE_FLAGS='-march=armv5t -marm' 69 ARM_ARCH_TYPE_ASFLAGS='-march=armv5te' 70 elif test "x$OPENJDK_TARGET_ABI_PROFILE" = xarmv6-vfp-hflt; then 71 ARM_FLOAT_TYPE=vfp-hflt 72 ARM_ARCH_TYPE_FLAGS='-march=armv6 -marm' 73 ARM_ARCH_TYPE_ASFLAGS='-march=armv6' 74 elif test "x$OPENJDK_TARGET_ABI_PROFILE" = xaarch64; then 75 # No special flags, just need to trigger setting JDK_ARCH_ABI_PROP_NAME 76 ARM_FLOAT_TYPE= 77 ARM_ARCH_TYPE_FLAGS= 78 ARM_ARCH_TYPE_ASFLAGS= 79 else 80 AC_MSG_ERROR([Invalid ABI profile: "$OPENJDK_TARGET_ABI_PROFILE"]) 81 fi 82 83 if test "x$ARM_FLOAT_TYPE" = xvfp-sflt; then 84 ARM_FLOAT_TYPE_FLAGS='-mfloat-abi=softfp -mfpu=vfp -DFLOAT_ARCH=-vfp-sflt' 85 ARM_FLOAT_TYPE_ASFLAGS="-mfloat-abi=softfp -mfpu=vfp" 86 elif test "x$ARM_FLOAT_TYPE" = xvfp-hflt; then 87 ARM_FLOAT_TYPE_FLAGS='-mfloat-abi=hard -mfpu=vfp -DFLOAT_ARCH=-vfp-hflt' 88 ARM_FLOAT_TYPE_ASFLAGS="-mfloat-abi=hard -mfpu=vfp" 89 elif test "x$ARM_FLOAT_TYPE" = xsflt; then 90 ARM_FLOAT_TYPE_FLAGS='-msoft-float -mfpu=vfp' 91 ARM_FLOAT_TYPE_ASFLAGS="-mfloat-abi=soft -mfpu=vfp" 92 fi 93 AC_MSG_CHECKING([for $ARM_FLOAT_TYPE floating point flags]) 94 AC_MSG_RESULT([$ARM_FLOAT_TYPE_FLAGS]) 95 AC_MSG_CHECKING([for $ARM_FLOAT_TYPE floating point flags for assembler]) 96 AC_MSG_RESULT([$ARM_FLOAT_TYPE_ASFLAGS]) 97 98 AC_MSG_CHECKING([for arch type flags]) 99 AC_MSG_RESULT([$ARM_ARCH_TYPE_FLAGS]) 100 AC_MSG_CHECKING([for arch type flags for assembler]) 101 AC_MSG_RESULT([$ARM_ARCH_TYPE_ASFLAGS]) 102 103 # Now set JDK_ARCH_ABI_PROP_NAME. This is equivalent to the last part of the 104 # autoconf target triplet. 105 [ JDK_ARCH_ABI_PROP_NAME=`$ECHO $OPENJDK_TARGET_AUTOCONF_NAME | $SED -e 's/.*-\([^-]*\)$/\1/'` ] 106 # Sanity check that it is a known ABI. 107 if test "x$JDK_ARCH_ABI_PROP_NAME" != xgnu && \ 108 test "x$JDK_ARCH_ABI_PROP_NAME" != xgnueabi && \ 109 test "x$JDK_ARCH_ABI_PROP_NAME" != xgnueabihf; then 110 AC_MSG_WARN([Unknown autoconf target triplet ABI: "$JDK_ARCH_ABI_PROP_NAME"]) 111 fi 112 AC_MSG_CHECKING([for ABI property name]) 113 AC_MSG_RESULT([$JDK_ARCH_ABI_PROP_NAME]) 114 AC_SUBST(JDK_ARCH_ABI_PROP_NAME) 115 fi 116 117 # When building with an abi profile, the name of that profile is appended on the 118 # bundle platform, which is used in bundle names. 119 if test "x$OPENJDK_TARGET_ABI_PROFILE" != x; then 120 OPENJDK_TARGET_BUNDLE_PLATFORM="$OPENJDK_TARGET_OS_BUNDLE-$OPENJDK_TARGET_ABI_PROFILE" 121 fi 122 ]) 123 124 AC_DEFUN([FLAGS_SETUP_MACOSX_VERSION], 125 [ 126 # Additional macosx handling 127 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 128 # MACOSX_VERSION_MIN specifies the lowest version of Macosx that the built 129 # binaries should be compatible with, even if compiled on a newer version 130 # of the OS. It currently has a hard coded value. Setting this also limits 131 # exposure to API changes in header files. Bumping this is likely to 132 # require code changes to build. 133 MACOSX_VERSION_MIN=10.9.0 134 MACOSX_VERSION_MIN_NODOTS=${MACOSX_VERSION_MIN//\./} 135 136 AC_SUBST(MACOSX_VERSION_MIN) 137 138 # Setting --with-macosx-version-max=<version> makes it an error to build or 139 # link to macosx APIs that are newer than the given OS version. The expected 140 # format for <version> is either nn.n.n or nn.nn.nn. See /usr/include/AvailabilityMacros.h. 141 AC_ARG_WITH([macosx-version-max], [AS_HELP_STRING([--with-macosx-version-max], 142 [error on use of newer functionality. @<:@macosx@:>@])], 143 [ 144 if echo "$with_macosx_version_max" | $GREP -q "^[[0-9]][[0-9]]\.[[0-9]]\.[[0-9]]\$"; then 145 MACOSX_VERSION_MAX=$with_macosx_version_max 146 elif echo "$with_macosx_version_max" | $GREP -q "^[[0-9]][[0-9]]\.[[0-9]][[0-9]]\.[[0-9]][[0-9]]\$"; then 147 MACOSX_VERSION_MAX=$with_macosx_version_max 148 elif test "x$with_macosx_version_max" = "xno"; then 149 # Use build system default 150 MACOSX_VERSION_MAX= 151 else 152 AC_MSG_ERROR([osx version format must be nn.n.n or nn.nn.nn]) 153 fi 154 ], 155 [MACOSX_VERSION_MAX=] 156 ) 157 MACOSX_VERSION_MAX_NODOTS=${MACOSX_VERSION_MAX//\./} 158 159 AC_SUBST(MACOSX_VERSION_MAX) 160 fi 161 ]) 162 163 # Reset the global CFLAGS/LDFLAGS variables and initialize them with the 164 # corresponding configure arguments instead 165 AC_DEFUN_ONCE([FLAGS_SETUP_USER_SUPPLIED_FLAGS], 166 [ 167 if test "x$CFLAGS" != "x"; then 168 AC_MSG_WARN([Ignoring CFLAGS($CFLAGS) found in environment. Use --with-extra-cflags]) 169 fi 170 171 if test "x$CXXFLAGS" != "x"; then 172 AC_MSG_WARN([Ignoring CXXFLAGS($CXXFLAGS) found in environment. Use --with-extra-cxxflags]) 173 fi 174 175 if test "x$LDFLAGS" != "x"; then 176 AC_MSG_WARN([Ignoring LDFLAGS($LDFLAGS) found in environment. Use --with-extra-ldflags]) 177 fi 178 179 if test "x$ASFLAGS" != "x"; then 180 AC_MSG_WARN([Ignoring ASFLAGS($ASFLAGS) found in environment. Use --with-extra-asflags]) 181 fi 182 183 AC_ARG_WITH(extra-cflags, [AS_HELP_STRING([--with-extra-cflags], 184 [extra flags to be used when compiling jdk c-files])]) 185 186 AC_ARG_WITH(extra-cxxflags, [AS_HELP_STRING([--with-extra-cxxflags], 187 [extra flags to be used when compiling jdk c++-files])]) 188 189 AC_ARG_WITH(extra-ldflags, [AS_HELP_STRING([--with-extra-ldflags], 190 [extra flags to be used when linking jdk])]) 191 192 AC_ARG_WITH(extra-asflags, [AS_HELP_STRING([--with-extra-asflags], 193 [extra flags to be passed to the assembler])]) 194 195 USER_CFLAGS="$with_extra_cflags" 196 USER_CXXFLAGS="$with_extra_cxxflags" 197 USER_LDFLAGS="$with_extra_ldflags" 198 USER_ASFLAGS="$with_extra_asflags" 199 ]) 200 201 # Setup the sysroot flags and add them to global CFLAGS and LDFLAGS so 202 # that configure can use them while detecting compilers. 203 # TOOLCHAIN_TYPE is available here. 204 # Param 1 - Optional prefix to all variables. (e.g BUILD_) 205 AC_DEFUN([FLAGS_SETUP_SYSROOT_FLAGS], 206 [ 207 if test "x[$]$1SYSROOT" != "x"; then 208 if test "x$TOOLCHAIN_TYPE" = xgcc; then 209 $1SYSROOT_CFLAGS="--sysroot=[$]$1SYSROOT" 210 $1SYSROOT_LDFLAGS="--sysroot=[$]$1SYSROOT" 211 elif test "x$TOOLCHAIN_TYPE" = xclang; then 212 $1SYSROOT_CFLAGS="-isysroot [$]$1SYSROOT" 213 $1SYSROOT_LDFLAGS="-isysroot [$]$1SYSROOT" 214 fi 215 fi 216 217 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 218 # We also need -iframework<path>/System/Library/Frameworks 219 $1SYSROOT_CFLAGS="[$]$1SYSROOT_CFLAGS -iframework [$]$1SYSROOT/System/Library/Frameworks" 220 $1SYSROOT_LDFLAGS="[$]$1SYSROOT_LDFLAGS -iframework [$]$1SYSROOT/System/Library/Frameworks" 221 # These always need to be set, or we can't find the frameworks embedded in JavaVM.framework 222 # set this here so it doesn't have to be peppered throughout the forest 223 $1SYSROOT_CFLAGS="[$]$1SYSROOT_CFLAGS -F [$]$1SYSROOT/System/Library/Frameworks/JavaVM.framework/Frameworks" 224 $1SYSROOT_LDFLAGS="[$]$1SYSROOT_LDFLAGS -F [$]$1SYSROOT/System/Library/Frameworks/JavaVM.framework/Frameworks" 225 fi 226 227 AC_SUBST($1SYSROOT_CFLAGS) 228 AC_SUBST($1SYSROOT_LDFLAGS) 229 ]) 230 231 AC_DEFUN_ONCE([FLAGS_PRE_TOOLCHAIN], 232 [ 233 # We should always include user supplied flags 234 FLAGS_SETUP_USER_SUPPLIED_FLAGS 235 # The sysroot flags are needed for configure to be able to run the compilers 236 FLAGS_SETUP_SYSROOT_FLAGS 237 238 # For xlc, the word size flag is required for correct behavior. 239 # For clang/gcc, the flag is only strictly required for reduced builds, but 240 # set it always where possible (x86 and ppc). 241 if test "x$TOOLCHAIN_TYPE" = xxlc; then 242 MACHINE_FLAG="-q${OPENJDK_TARGET_CPU_BITS}" 243 elif test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 244 if test "x$OPENJDK_TARGET_CPU_ARCH" = xx86 && 245 test "x$OPENJDK_TARGET_CPU" != xx32 || 246 test "x$OPENJDK_TARGET_CPU_ARCH" = xppc; then 247 MACHINE_FLAG="-m${OPENJDK_TARGET_CPU_BITS}" 248 fi 249 fi 250 251 # FIXME: global flags are not used yet... 252 # The "global" flags will *always* be set. Without them, it is not possible to 253 # get a working compilation. 254 GLOBAL_CFLAGS="$MACHINE_FLAG $SYSROOT_CFLAGS $USER_CFLAGS" 255 GLOBAL_CXXFLAGS="$MACHINE_FLAG $SYSROOT_CFLAGS $USER_CXXFLAGS" 256 GLOBAL_LDFLAGS="$MACHINE_FLAG $SYSROOT_LDFLAGS $USER_LDFLAGS" 257 # FIXME: Don't really know how to do with this, but this was the old behavior 258 GLOBAL_CPPFLAGS="$SYSROOT_CFLAGS" 259 AC_SUBST(GLOBAL_CFLAGS) 260 AC_SUBST(GLOBAL_CXXFLAGS) 261 AC_SUBST(GLOBAL_LDFLAGS) 262 AC_SUBST(GLOBAL_CPPFLAGS) 263 264 # FIXME: For compatilibity, export this as EXTRA_CFLAGS for now. 265 EXTRA_CFLAGS="$MACHINE_FLAG $USER_CFLAGS" 266 EXTRA_CXXFLAGS="$MACHINE_FLAG $USER_CXXFLAGS" 267 EXTRA_LDFLAGS="$MACHINE_FLAG $USER_LDFLAGS" 268 EXTRA_ASFLAGS="$USER_ASFLAGS" 269 270 AC_SUBST(EXTRA_CFLAGS) 271 AC_SUBST(EXTRA_CXXFLAGS) 272 AC_SUBST(EXTRA_LDFLAGS) 273 AC_SUBST(EXTRA_ASFLAGS) 274 275 # For autoconf testing to work, the global flags must also be stored in the 276 # "unnamed" CFLAGS etc. 277 CFLAGS="$GLOBAL_CFLAGS" 278 CXXFLAGS="$GLOBAL_CXXFLAGS" 279 LDFLAGS="$GLOBAL_LDFLAGS" 280 CPPFLAGS="$GLOBAL_CPPFLAGS" 281 ]) 282 283 AC_DEFUN([FLAGS_SETUP_TOOLCHAIN_CONTROL], 284 [ 285 # COMPILER_TARGET_BITS_FLAG : option for selecting 32- or 64-bit output 286 # COMPILER_COMMAND_FILE_FLAG : option for passing a command file to the compiler 287 # COMPILER_BINDCMD_FILE_FLAG : option for specifying a file which saves the binder 288 # commands produced by the link step (currently AIX only) 289 if test "x$TOOLCHAIN_TYPE" = xxlc; then 290 COMPILER_TARGET_BITS_FLAG="-q" 291 COMPILER_COMMAND_FILE_FLAG="-f" 292 COMPILER_BINDCMD_FILE_FLAG="-bloadmap:" 293 else 294 COMPILER_TARGET_BITS_FLAG="-m" 295 COMPILER_COMMAND_FILE_FLAG="@" 296 COMPILER_BINDCMD_FILE_FLAG="" 297 298 # Check if @file is supported by gcc 299 if test "x$TOOLCHAIN_TYPE" = xgcc; then 300 AC_MSG_CHECKING([if @file is supported by gcc]) 301 # Extra emtpy "" to prevent ECHO from interpreting '--version' as argument 302 $ECHO "" "--version" > command.file 303 if $CXX @command.file 2>&AS_MESSAGE_LOG_FD >&AS_MESSAGE_LOG_FD; then 304 AC_MSG_RESULT(yes) 305 COMPILER_COMMAND_FILE_FLAG="@" 306 else 307 AC_MSG_RESULT(no) 308 COMPILER_COMMAND_FILE_FLAG= 309 fi 310 $RM command.file 311 fi 312 fi 313 314 AC_SUBST(COMPILER_TARGET_BITS_FLAG) 315 AC_SUBST(COMPILER_COMMAND_FILE_FLAG) 316 AC_SUBST(COMPILER_BINDCMD_FILE_FLAG) 317 318 # Check that the compiler supports -mX (or -qX on AIX) flags 319 # Set COMPILER_SUPPORTS_TARGET_BITS_FLAG to 'true' if it does 320 FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${COMPILER_TARGET_BITS_FLAG}${OPENJDK_TARGET_CPU_BITS}], 321 IF_TRUE: [COMPILER_SUPPORTS_TARGET_BITS_FLAG=true], 322 IF_FALSE: [COMPILER_SUPPORTS_TARGET_BITS_FLAG=false]) 323 AC_SUBST(COMPILER_SUPPORTS_TARGET_BITS_FLAG) 324 325 if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 326 CC_OUT_OPTION=-Fo 327 LD_OUT_OPTION=-out: 328 AR_OUT_OPTION=-out: 329 else 330 # The option used to specify the target .o,.a or .so file. 331 # When compiling, how to specify the to be created object file. 332 CC_OUT_OPTION='-o$(SPACE)' 333 # When linking, how to specify the output 334 LD_OUT_OPTION='-o$(SPACE)' 335 # When archiving, how to specify the destination static archive. 336 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 337 AR_OUT_OPTION='-r -cs$(SPACE)' 338 else 339 AR_OUT_OPTION='-rcs$(SPACE)' 340 fi 341 fi 342 AC_SUBST(CC_OUT_OPTION) 343 AC_SUBST(LD_OUT_OPTION) 344 AC_SUBST(AR_OUT_OPTION) 345 346 # Generate make dependency files 347 if test "x$TOOLCHAIN_TYPE" = xgcc; then 348 C_FLAG_DEPS="-MMD -MF" 349 elif test "x$TOOLCHAIN_TYPE" = xclang; then 350 C_FLAG_DEPS="-MMD -MF" 351 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 352 C_FLAG_DEPS="-qmakedep=gcc -MF" 353 fi 354 CXX_FLAG_DEPS="$C_FLAG_DEPS" 355 AC_SUBST(C_FLAG_DEPS) 356 AC_SUBST(CXX_FLAG_DEPS) 357 ]) 358 359 AC_DEFUN_ONCE([FLAGS_POST_TOOLCHAIN], 360 [ 361 FLAGS_SETUP_TOOLCHAIN_CONTROL 362 363 if test "x$BUILD_SYSROOT" != x; then 364 FLAGS_SETUP_SYSROOT_FLAGS([BUILD_]) 365 else 366 if test "x$COMPILE_TYPE" != "xcross"; then 367 BUILD_SYSROOT_CFLAGS="$SYSROOT_CFLAGS" 368 BUILD_SYSROOT_LDFLAGS="$SYSROOT_LDFLAGS" 369 fi 370 fi 371 AC_SUBST(BUILD_SYSROOT_CFLAGS) 372 AC_SUBST(BUILD_SYSROOT_LDFLAGS) 373 374 ]) 375 376 AC_DEFUN([FLAGS_SETUP_FLAGS], 377 [ 378 FLAGS_SETUP_MACOSX_VERSION 379 FLAGS_SETUP_ABI_PROFILE 380 381 FLAGS_SETUP_SHARED_LIBS 382 FLAGS_SETUP_DEBUG_SYMBOLS 383 FLAGS_SETUP_WARNINGS 384 FLAGS_SETUP_QUALITY_CHECKS 385 FLAGS_SETUP_OPTIMIZATION 386 387 FLAGS_SETUP_CFLAGS 388 FLAGS_SETUP_LDFLAGS 389 390 FLAGS_SETUP_ARFLAGS 391 FLAGS_SETUP_STRIPFLAGS 392 FLAGS_SETUP_RCFLAGS 393 394 FLAGS_SETUP_ASFLAGS 395 FLAGS_SETUP_ASFLAGS_CPU_DEP([TARGET]) 396 FLAGS_SETUP_ASFLAGS_CPU_DEP([BUILD], [OPENJDK_BUILD_]) 397 ]) 398 399 # FLAGS_C_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [ARGUMENT], IF_TRUE: [RUN-IF-TRUE], 400 # IF_FALSE: [RUN-IF-FALSE]) 401 # ------------------------------------------------------------ 402 # Check that the C compiler supports an argument 403 UTIL_DEFUN_NAMED([FLAGS_C_COMPILER_CHECK_ARGUMENTS], 404 [*ARGUMENT IF_TRUE IF_FALSE PREFIX], [$@], 405 [ 406 AC_MSG_CHECKING([if ARG_PREFIX[CC] supports "ARG_ARGUMENT"]) 407 supports=yes 408 409 saved_cflags="$CFLAGS" 410 saved_cc="$CC" 411 CFLAGS="$CFLAGS $CFLAGS_WARNINGS_ARE_ERRORS ARG_ARGUMENT" 412 CC="$ARG_PREFIX[CC]" 413 AC_LANG_PUSH([C]) 414 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int i;]])], [], 415 [supports=no]) 416 AC_LANG_POP([C]) 417 CC="$saved_cc" 418 CFLAGS="$saved_cflags" 419 420 AC_MSG_RESULT([$supports]) 421 if test "x$supports" = "xyes" ; then 422 : 423 ARG_IF_TRUE 424 else 425 : 426 ARG_IF_FALSE 427 fi 428 ]) 429 430 # FLAGS_CXX_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [ARGUMENT], IF_TRUE: [RUN-IF-TRUE], 431 # IF_FALSE: [RUN-IF-FALSE]) 432 # ------------------------------------------------------------ 433 # Check that the C++ compiler supports an argument 434 UTIL_DEFUN_NAMED([FLAGS_CXX_COMPILER_CHECK_ARGUMENTS], 435 [*ARGUMENT IF_TRUE IF_FALSE PREFIX], [$@], 436 [ 437 AC_MSG_CHECKING([if ARG_PREFIX[CXX] supports "ARG_ARGUMENT"]) 438 supports=yes 439 440 saved_cxxflags="$CXXFLAGS" 441 saved_cxx="$CXX" 442 CXXFLAGS="$CXXFLAG $CFLAGS_WARNINGS_ARE_ERRORS ARG_ARGUMENT" 443 CXX="$ARG_PREFIX[CXX]" 444 AC_LANG_PUSH([C++]) 445 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int i;]])], [], 446 [supports=no]) 447 AC_LANG_POP([C++]) 448 CXX="$saved_cxx" 449 CXXFLAGS="$saved_cxxflags" 450 451 AC_MSG_RESULT([$supports]) 452 if test "x$supports" = "xyes" ; then 453 : 454 ARG_IF_TRUE 455 else 456 : 457 ARG_IF_FALSE 458 fi 459 ]) 460 461 # FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [ARGUMENT], IF_TRUE: [RUN-IF-TRUE], 462 # IF_FALSE: [RUN-IF-FALSE]) 463 # ------------------------------------------------------------ 464 # Check that the C and C++ compilers support an argument 465 UTIL_DEFUN_NAMED([FLAGS_COMPILER_CHECK_ARGUMENTS], 466 [*ARGUMENT IF_TRUE IF_FALSE PREFIX], [$@], 467 [ 468 FLAGS_C_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [ARG_ARGUMENT], 469 IF_TRUE: [C_COMP_SUPPORTS="yes"], 470 IF_FALSE: [C_COMP_SUPPORTS="no"], 471 PREFIX: [ARG_PREFIX]) 472 FLAGS_CXX_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [ARG_ARGUMENT], 473 IF_TRUE: [CXX_COMP_SUPPORTS="yes"], 474 IF_FALSE: [CXX_COMP_SUPPORTS="no"], 475 PREFIX: [ARG_PREFIX]) 476 477 AC_MSG_CHECKING([if both ARG_PREFIX[CC] and ARG_PREFIX[CXX] support "ARG_ARGUMENT"]) 478 supports=no 479 if test "x$C_COMP_SUPPORTS" = "xyes" -a "x$CXX_COMP_SUPPORTS" = "xyes"; then 480 supports=yes; 481 fi 482 483 AC_MSG_RESULT([$supports]) 484 if test "x$supports" = "xyes" ; then 485 : 486 ARG_IF_TRUE 487 else 488 : 489 ARG_IF_FALSE 490 fi 491 ]) 492 493 # FLAGS_LINKER_CHECK_ARGUMENTS(ARGUMENT: [ARGUMENT], IF_TRUE: [RUN-IF-TRUE], 494 # IF_FALSE: [RUN-IF-FALSE]) 495 # ------------------------------------------------------------ 496 # Check that the linker support an argument 497 UTIL_DEFUN_NAMED([FLAGS_LINKER_CHECK_ARGUMENTS], 498 [*ARGUMENT IF_TRUE IF_FALSE], [$@], 499 [ 500 AC_MSG_CHECKING([if linker supports "ARG_ARGUMENT"]) 501 supports=yes 502 503 saved_ldflags="$LDFLAGS" 504 LDFLAGS="$LDFLAGS ARG_ARGUMENT" 505 AC_LANG_PUSH([C]) 506 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[]])], 507 [], [supports=no]) 508 AC_LANG_POP([C]) 509 LDFLAGS="$saved_ldflags" 510 511 AC_MSG_RESULT([$supports]) 512 if test "x$supports" = "xyes" ; then 513 : 514 ARG_IF_TRUE 515 else 516 : 517 ARG_IF_FALSE 518 fi 519 ])