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 26m4_include([flags-cflags.m4]) 27m4_include([flags-ldflags.m4]) 28m4_include([flags-other.m4]) 29 30################################################################################ 31# 32# Setup ABI profile (for arm) 33# 34AC_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-$OPENJDK_TARGET_ABI_PROFILE" 121 fi 122]) 123 124AC_DEFUN([FLAGS_SETUP_MACOSX_VERSION], 125[ 126 # Additional macosx handling 127 if test "x$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 165AC_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_) 205AC_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 $1SYSROOT_LDFLAGS="[$]$1SYSROOT_LDFLAGS -iframework [$]$1SYSROOT/System/Library/Frameworks" 221 if test -d "[$]$1SYSROOT/System/Library/Frameworks/JavaVM.framework/Frameworks" ; then 222 # These always need to be set on macOS 10.X, or we can't find the frameworks embedded in JavaVM.framework 223 # set this here so it doesn't have to be peppered throughout the forest 224 $1SYSROOT_CFLAGS="[$]$1SYSROOT_CFLAGS -F [$]$1SYSROOT/System/Library/Frameworks/JavaVM.framework/Frameworks" 225 $1SYSROOT_LDFLAGS="[$]$1SYSROOT_LDFLAGS -F [$]$1SYSROOT/System/Library/Frameworks/JavaVM.framework/Frameworks" 226 fi 227 fi 228 229 # For the microsoft toolchain, we need to get the SYSROOT flags from the 230 # Visual Studio environment. Currently we cannot handle this as a separate 231 # build toolchain. 232 if test "x$1" = x && test "x$OPENJDK_BUILD_OS" = "xwindows" \ 233 && test "x$TOOLCHAIN_TYPE" = "xmicrosoft"; then 234 TOOLCHAIN_SETUP_VISUAL_STUDIO_ENV 235 fi 236 237 AC_SUBST($1SYSROOT_CFLAGS) 238 AC_SUBST($1SYSROOT_LDFLAGS) 239]) 240 241AC_DEFUN_ONCE([FLAGS_PRE_TOOLCHAIN], 242[ 243 # We should always include user supplied flags 244 FLAGS_SETUP_USER_SUPPLIED_FLAGS 245 246 # The sysroot flags are needed for configure to be able to run the compilers 247 FLAGS_SETUP_SYSROOT_FLAGS 248 249 # For xlc, the word size flag is required for correct behavior. 250 # For clang/gcc, the flag is only strictly required for reduced builds, but 251 # set it always where possible (x86 and ppc). 252 if test "x$TOOLCHAIN_TYPE" = xxlc; then 253 MACHINE_FLAG="-q${OPENJDK_TARGET_CPU_BITS}" 254 elif test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then 255 if test "x$OPENJDK_TARGET_CPU_ARCH" = xx86 && 256 test "x$OPENJDK_TARGET_CPU" != xx32 || 257 test "x$OPENJDK_TARGET_CPU_ARCH" = xppc; then 258 MACHINE_FLAG="-m${OPENJDK_TARGET_CPU_BITS}" 259 fi 260 fi 261 262 # FIXME: global flags are not used yet... 263 # The "global" flags will *always* be set. Without them, it is not possible to 264 # get a working compilation. 265 GLOBAL_CFLAGS="$MACHINE_FLAG $SYSROOT_CFLAGS $USER_CFLAGS" 266 GLOBAL_CXXFLAGS="$MACHINE_FLAG $SYSROOT_CFLAGS $USER_CXXFLAGS" 267 GLOBAL_LDFLAGS="$MACHINE_FLAG $SYSROOT_LDFLAGS $USER_LDFLAGS" 268 # FIXME: Don't really know how to do with this, but this was the old behavior 269 GLOBAL_CPPFLAGS="$SYSROOT_CFLAGS" 270 271 # FIXME: For compatilibity, export this as EXTRA_CFLAGS for now. 272 EXTRA_CFLAGS="$MACHINE_FLAG $USER_CFLAGS" 273 EXTRA_CXXFLAGS="$MACHINE_FLAG $USER_CXXFLAGS" 274 EXTRA_LDFLAGS="$MACHINE_FLAG $USER_LDFLAGS" 275 EXTRA_ASFLAGS="$USER_ASFLAGS" 276 277 AC_SUBST(EXTRA_CFLAGS) 278 AC_SUBST(EXTRA_CXXFLAGS) 279 AC_SUBST(EXTRA_LDFLAGS) 280 AC_SUBST(EXTRA_ASFLAGS) 281 282 # For autoconf testing to work, the global flags must also be stored in the 283 # "unnamed" CFLAGS etc. 284 CFLAGS="$GLOBAL_CFLAGS" 285 CXXFLAGS="$GLOBAL_CXXFLAGS" 286 LDFLAGS="$GLOBAL_LDFLAGS" 287 CPPFLAGS="$GLOBAL_CPPFLAGS" 288 289 if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 290 # When autoconf sends both compiler and linker flags to cl.exe at the same 291 # time, linker flags must be last at the command line. Achieve this by 292 # moving them to LIBS. 293 LIBS="$LIBS -link $LDFLAGS" 294 LDFLAGS="" 295 fi 296]) 297 298AC_DEFUN([FLAGS_SETUP_TOOLCHAIN_CONTROL], 299[ 300 # COMPILER_TARGET_BITS_FLAG : option for selecting 32- or 64-bit output 301 # COMPILER_COMMAND_FILE_FLAG : option for passing a command file to the compiler 302 # COMPILER_BINDCMD_FILE_FLAG : option for specifying a file which saves the binder 303 # commands produced by the link step (currently AIX only) 304 if test "x$TOOLCHAIN_TYPE" = xxlc; then 305 COMPILER_TARGET_BITS_FLAG="-q" 306 COMPILER_COMMAND_FILE_FLAG="-f" 307 COMPILER_BINDCMD_FILE_FLAG="-bloadmap:" 308 else 309 COMPILER_TARGET_BITS_FLAG="-m" 310 COMPILER_COMMAND_FILE_FLAG="@" 311 COMPILER_BINDCMD_FILE_FLAG="" 312 313 # Check if @file is supported by gcc 314 if test "x$TOOLCHAIN_TYPE" = xgcc; then 315 AC_MSG_CHECKING([if @file is supported by gcc]) 316 # Extra emtpy "" to prevent ECHO from interpreting '--version' as argument 317 $ECHO "" "--version" > command.file 318 if $CXX @command.file 2>&AS_MESSAGE_LOG_FD >&AS_MESSAGE_LOG_FD; then 319 AC_MSG_RESULT(yes) 320 COMPILER_COMMAND_FILE_FLAG="@" 321 else 322 AC_MSG_RESULT(no) 323 COMPILER_COMMAND_FILE_FLAG= 324 fi 325 $RM command.file 326 fi 327 fi 328 329 AC_SUBST(COMPILER_TARGET_BITS_FLAG) 330 AC_SUBST(COMPILER_COMMAND_FILE_FLAG) 331 AC_SUBST(COMPILER_BINDCMD_FILE_FLAG) 332 333 # Check that the compiler supports -mX (or -qX on AIX) flags 334 # Set COMPILER_SUPPORTS_TARGET_BITS_FLAG to 'true' if it does 335 FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${COMPILER_TARGET_BITS_FLAG}${OPENJDK_TARGET_CPU_BITS}], 336 IF_TRUE: [COMPILER_SUPPORTS_TARGET_BITS_FLAG=true], 337 IF_FALSE: [COMPILER_SUPPORTS_TARGET_BITS_FLAG=false]) 338 AC_SUBST(COMPILER_SUPPORTS_TARGET_BITS_FLAG) 339 340 if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then 341 CC_OUT_OPTION=-Fo 342 LD_OUT_OPTION=-out: 343 AR_OUT_OPTION=-out: 344 else 345 # The option used to specify the target .o,.a or .so file. 346 # When compiling, how to specify the to be created object file. 347 CC_OUT_OPTION='-o$(SPACE)' 348 # When linking, how to specify the output 349 LD_OUT_OPTION='-o$(SPACE)' 350 # When archiving, how to specify the destination static archive. 351 if test "x$OPENJDK_TARGET_OS" = xmacosx; then 352 AR_OUT_OPTION='-r -cs$(SPACE)' 353 else 354 AR_OUT_OPTION='-rcs$(SPACE)' 355 fi 356 fi 357 AC_SUBST(CC_OUT_OPTION) 358 AC_SUBST(LD_OUT_OPTION) 359 AC_SUBST(AR_OUT_OPTION) 360 361 # Generate make dependency files 362 if test "x$TOOLCHAIN_TYPE" = xgcc; then 363 C_FLAG_DEPS="-MMD -MF" 364 elif test "x$TOOLCHAIN_TYPE" = xclang; then 365 C_FLAG_DEPS="-MMD -MF" 366 elif test "x$TOOLCHAIN_TYPE" = xxlc; then 367 C_FLAG_DEPS="-qmakedep=gcc -MF" 368 fi 369 CXX_FLAG_DEPS="$C_FLAG_DEPS" 370 AC_SUBST(C_FLAG_DEPS) 371 AC_SUBST(CXX_FLAG_DEPS) 372]) 373 374AC_DEFUN_ONCE([FLAGS_POST_TOOLCHAIN], 375[ 376 FLAGS_SETUP_TOOLCHAIN_CONTROL 377 378 if test "x$BUILD_SYSROOT" != x; then 379 FLAGS_SETUP_SYSROOT_FLAGS([BUILD_]) 380 else 381 if test "x$COMPILE_TYPE" != "xcross"; then 382 BUILD_SYSROOT_CFLAGS="$SYSROOT_CFLAGS" 383 BUILD_SYSROOT_LDFLAGS="$SYSROOT_LDFLAGS" 384 fi 385 fi 386]) 387 388AC_DEFUN([FLAGS_SETUP_FLAGS], 389[ 390 FLAGS_SETUP_MACOSX_VERSION 391 FLAGS_SETUP_ABI_PROFILE 392 393 FLAGS_SETUP_SHARED_LIBS 394 FLAGS_SETUP_DEBUG_SYMBOLS 395 FLAGS_SETUP_WARNINGS 396 FLAGS_SETUP_QUALITY_CHECKS 397 FLAGS_SETUP_OPTIMIZATION 398 399 FLAGS_SETUP_CFLAGS 400 FLAGS_SETUP_LDFLAGS 401 402 FLAGS_SETUP_ARFLAGS 403 FLAGS_SETUP_STRIPFLAGS 404 FLAGS_SETUP_RCFLAGS 405 406 FLAGS_SETUP_ASFLAGS 407 FLAGS_SETUP_ASFLAGS_CPU_DEP([TARGET]) 408 FLAGS_SETUP_ASFLAGS_CPU_DEP([BUILD], [OPENJDK_BUILD_]) 409]) 410 411# FLAGS_C_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [ARGUMENT], IF_TRUE: [RUN-IF-TRUE], 412# IF_FALSE: [RUN-IF-FALSE]) 413# ------------------------------------------------------------ 414# Check that the C compiler supports an argument 415UTIL_DEFUN_NAMED([FLAGS_C_COMPILER_CHECK_ARGUMENTS], 416 [*ARGUMENT IF_TRUE IF_FALSE PREFIX], [$@], 417[ 418 AC_MSG_CHECKING([if ARG_PREFIX[CC] supports "ARG_ARGUMENT"]) 419 supports=yes 420 421 saved_cflags="$CFLAGS" 422 saved_cc="$CC" 423 CFLAGS="$CFLAGS $CFLAGS_WARNINGS_ARE_ERRORS ARG_ARGUMENT" 424 CC="$ARG_PREFIX[CC]" 425 AC_LANG_PUSH([C]) 426 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int i;]])], [], 427 [supports=no]) 428 AC_LANG_POP([C]) 429 CC="$saved_cc" 430 CFLAGS="$saved_cflags" 431 432 AC_MSG_RESULT([$supports]) 433 if test "x$supports" = "xyes" ; then 434 : 435 ARG_IF_TRUE 436 else 437 : 438 ARG_IF_FALSE 439 fi 440]) 441 442# FLAGS_CXX_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [ARGUMENT], IF_TRUE: [RUN-IF-TRUE], 443# IF_FALSE: [RUN-IF-FALSE]) 444# ------------------------------------------------------------ 445# Check that the C++ compiler supports an argument 446UTIL_DEFUN_NAMED([FLAGS_CXX_COMPILER_CHECK_ARGUMENTS], 447 [*ARGUMENT IF_TRUE IF_FALSE PREFIX], [$@], 448[ 449 AC_MSG_CHECKING([if ARG_PREFIX[CXX] supports "ARG_ARGUMENT"]) 450 supports=yes 451 452 saved_cxxflags="$CXXFLAGS" 453 saved_cxx="$CXX" 454 CXXFLAGS="$CXXFLAG $CFLAGS_WARNINGS_ARE_ERRORS ARG_ARGUMENT" 455 CXX="$ARG_PREFIX[CXX]" 456 AC_LANG_PUSH([C++]) 457 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int i;]])], [], 458 [supports=no]) 459 AC_LANG_POP([C++]) 460 CXX="$saved_cxx" 461 CXXFLAGS="$saved_cxxflags" 462 463 AC_MSG_RESULT([$supports]) 464 if test "x$supports" = "xyes" ; then 465 : 466 ARG_IF_TRUE 467 else 468 : 469 ARG_IF_FALSE 470 fi 471]) 472 473# FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [ARGUMENT], IF_TRUE: [RUN-IF-TRUE], 474# IF_FALSE: [RUN-IF-FALSE]) 475# ------------------------------------------------------------ 476# Check that the C and C++ compilers support an argument 477UTIL_DEFUN_NAMED([FLAGS_COMPILER_CHECK_ARGUMENTS], 478 [*ARGUMENT IF_TRUE IF_FALSE PREFIX], [$@], 479[ 480 FLAGS_C_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [ARG_ARGUMENT], 481 IF_TRUE: [C_COMP_SUPPORTS="yes"], 482 IF_FALSE: [C_COMP_SUPPORTS="no"], 483 PREFIX: [ARG_PREFIX]) 484 FLAGS_CXX_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [ARG_ARGUMENT], 485 IF_TRUE: [CXX_COMP_SUPPORTS="yes"], 486 IF_FALSE: [CXX_COMP_SUPPORTS="no"], 487 PREFIX: [ARG_PREFIX]) 488 489 AC_MSG_CHECKING([if both ARG_PREFIX[CC] and ARG_PREFIX[CXX] support "ARG_ARGUMENT"]) 490 supports=no 491 if test "x$C_COMP_SUPPORTS" = "xyes" -a "x$CXX_COMP_SUPPORTS" = "xyes"; then 492 supports=yes; 493 fi 494 495 AC_MSG_RESULT([$supports]) 496 if test "x$supports" = "xyes" ; then 497 : 498 ARG_IF_TRUE 499 else 500 : 501 ARG_IF_FALSE 502 fi 503]) 504 505# FLAGS_LINKER_CHECK_ARGUMENTS(ARGUMENT: [ARGUMENT], IF_TRUE: [RUN-IF-TRUE], 506# IF_FALSE: [RUN-IF-FALSE]) 507# ------------------------------------------------------------ 508# Check that the linker support an argument 509UTIL_DEFUN_NAMED([FLAGS_LINKER_CHECK_ARGUMENTS], 510 [*ARGUMENT IF_TRUE IF_FALSE], [$@], 511[ 512 AC_MSG_CHECKING([if linker supports "ARG_ARGUMENT"]) 513 supports=yes 514 515 saved_ldflags="$LDFLAGS" 516 LDFLAGS="$LDFLAGS ARG_ARGUMENT" 517 AC_LANG_PUSH([C]) 518 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[]])], 519 [], [supports=no]) 520 AC_LANG_POP([C]) 521 LDFLAGS="$saved_ldflags" 522 523 AC_MSG_RESULT([$supports]) 524 if test "x$supports" = "xyes" ; then 525 : 526 ARG_IF_TRUE 527 else 528 : 529 ARG_IF_FALSE 530 fi 531]) 532