1# Process this file with autoreconf to produce a configure script. 2 3AC_INIT(package-unused, version-unused,, libstdc++) 4AC_CONFIG_SRCDIR(src/shared/hashtable-aux.cc) 5AC_CONFIG_HEADER(config.h) 6 7# This works around the fact that libtool configuration may change LD 8# for this particular configuration, but some shells, instead of 9# keeping the changes in LD private, export them just because LD is 10# exported. Only used at the end of this file. 11### am handles this now? ORIGINAL_LD_FOR_MULTILIBS=$LD 12 13# Find the rest of the source tree framework. 14AM_ENABLE_MULTILIB(, ..) 15 16# Gets build, host, target, *_vendor, *_cpu, *_os, etc. 17# 18# You will slowly go insane if you do not grok the following fact: when 19# building v3 as part of the compiler, the top-level /target/ becomes the 20# library's /host/. configure then causes --target to default to --host, 21# exactly like any other package using autoconf. Therefore, 'target' and 22# 'host' will always be the same. This makes sense both for native and 23# cross compilers, just think about it for a little while. :-) 24# 25# Also, if v3 is being configured as part of a cross compiler, the top-level 26# configure script will pass the "real" host as $with_cross_host. 27# 28# Do not delete or change the following two lines. For why, see 29# http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html 30AC_CANONICAL_SYSTEM 31target_alias=${target_alias-$host_alias} 32 33# Handy for debugging: 34#AC_MSG_NOTICE($build / $host / $target / $host_alias / $target_alias); sleep 5 35 36if test "$build" != "$host"; then 37 # We are being configured with some form of cross compiler. 38 GLIBCXX_IS_NATIVE=false 39 case "$host","$target" in 40 *-*-netbsd*,*-*-netbsd*) 41 GLIBCXX_IS_NATIVE=true 42 ;; 43 # Darwin crosses can use the host system's libraries and headers, 44 # because of the fat library support. Of course, it must be the 45 # same version of Darwin on both sides. Allow the user to 46 # just say --target=foo-darwin without a version number to mean 47 # "the version on this system". 48 *-*-darwin*,*-*-darwin*) 49 hostos=`echo $host | sed 's/.*-darwin/darwin/'` 50 targetos=`echo $target | sed 's/.*-darwin/darwin/'` 51 if test $hostos = $targetos -o $targetos = darwin ; then 52 GLIBCXX_IS_NATIVE=true 53 fi 54 ;; 55 56 *) 57 GCC_NO_EXECUTABLES 58 ;; 59 esac 60else 61 GLIBCXX_IS_NATIVE=true 62fi 63 64# Sets up automake. Must come after AC_CANONICAL_SYSTEM. Each of the 65# following is magically included in AUTOMAKE_OPTIONS in each Makefile.am. 66# 1.x: minimum required version 67# no-define: PACKAGE and VERSION will not be #define'd in config.h (a bunch 68# of other PACKAGE_* variables will, however, and there's nothing 69# we can do about that; they come from AC_INIT). 70# foreign: we don't follow the normal rules for GNU packages (no COPYING 71# file in the top srcdir, etc, etc), so stop complaining. 72# no-dependencies: turns off auto dependency generation (just for now) 73# no-dist: we don't want 'dist' and related rules. 74# -Wall: turns on all automake warnings... 75# -Wno-portability: ...except this one, since GNU make is now required. 76AM_INIT_AUTOMAKE([1.9.3 no-define foreign no-dependencies no-dist -Wall -Wno-portability -Wno-override]) 77AH_TEMPLATE(PACKAGE, [Name of package]) 78AH_TEMPLATE(VERSION, [Version number of package]) 79 80# -fno-builtin must be present here so that a non-conflicting form of 81# std::exit can be guessed by AC_PROG_CXX, and used in later tests. 82 83save_CXXFLAGS="$CXXFLAGS" 84CXXFLAGS="$CXXFLAGS -fno-builtin" 85AC_PROG_CC 86AC_PROG_CXX 87CXXFLAGS="$save_CXXFLAGS" 88 89AC_SYS_LARGEFILE 90 91# Runs configure.host, and assorted other critical bits. Sets 92# up critical shell variables. 93GLIBCXX_CONFIGURE 94 95# Libtool setup. 96if test "x${with_newlib}" != "xyes"; then 97 AC_LIBTOOL_DLOPEN 98fi 99AM_PROG_LIBTOOL 100ACX_LT_HOST_FLAGS 101AC_SUBST(enable_shared) 102AC_SUBST(enable_static) 103 104if test "$enable_vtable_verify" = yes; then 105 predep_objects_CXX="${predep_objects_CXX} ${glibcxx_builddir}/../libgcc/vtv_start.o" 106 postdep_objects_CXX="${postdep_objects_CXX} ${glibcxx_builddir}/../libgcc/vtv_end.o" 107fi 108 109 110# libtool variables for C++ shared and position-independent compiles. 111# 112# Use glibcxx_lt_pic_flag to designate the automake variable 113# used to encapsulate the default libtool approach to creating objects 114# with position-independent code. Default: -prefer-pic. 115# 116# Use glibcxx_compiler_shared_flag to designate a compile-time flags for 117# creating shared objects. Default: -D_GLIBCXX_SHARED. 118# 119# Use glibcxx_compiler_pic_flag to designate a compile-time flags for 120# creating position-independent objects. This varies with the target 121# hardware and operating system, but is often: -DPIC -fPIC. 122if test "$enable_shared" = yes; then 123 glibcxx_lt_pic_flag="-prefer-pic" 124 glibcxx_compiler_pic_flag="$lt_prog_compiler_pic_CXX" 125 glibcxx_compiler_shared_flag="-D_GLIBCXX_SHARED" 126 127else 128 glibcxx_lt_pic_flag= 129 glibcxx_compiler_pic_flag= 130 glibcxx_compiler_shared_flag= 131fi 132AC_SUBST(glibcxx_lt_pic_flag) 133AC_SUBST(glibcxx_compiler_pic_flag) 134AC_SUBST(glibcxx_compiler_shared_flag) 135 136# Override the libtool's pic_flag and pic_mode. 137# Do this step after AM_PROG_LIBTOOL, but before AC_OUTPUT. 138# NB: this impacts --with-pic and --without-pic. 139lt_prog_compiler_pic_CXX="$glibcxx_compiler_pic_flag $glibcxx_compiler_shared_flag" 140pic_mode='default' 141 142# Eliminate -lstdc++ addition to postdeps for cross compiles. 143postdeps_CXX=`echo " $postdeps_CXX " | sed 's, -lstdc++ ,,g'` 144 145# Possibly disable most of the library. 146## TODO: Consider skipping unncessary tests altogether in this case, rather 147## than just ignoring the results. Faster /and/ more correct, win win. 148GLIBCXX_ENABLE_HOSTED 149 150# Enable descriptive messages to standard output on termination. 151GLIBCXX_ENABLE_VERBOSE 152 153# Enable compiler support that doesn't require linking. 154GLIBCXX_ENABLE_PCH($is_hosted) 155GLIBCXX_ENABLE_THREADS 156GLIBCXX_ENABLE_ATOMIC_BUILTINS 157GLIBCXX_ENABLE_LOCK_POLICY 158GLIBCXX_ENABLE_DECIMAL_FLOAT 159GLIBCXX_ENABLE_INT128_FLOAT128 160if test "$enable_float128" = yes; then 161 port_specific_symbol_files="$port_specific_symbol_files \$(top_srcdir)/config/abi/pre/float128.ver" 162fi 163 164# Checks for compiler support that doesn't require linking. 165GLIBCXX_CHECK_COMPILER_FEATURES 166 167# Enable all the variable C++ runtime options that don't require linking. 168GLIBCXX_ENABLE_CSTDIO 169GLIBCXX_ENABLE_CLOCALE 170GLIBCXX_ENABLE_ALLOCATOR 171GLIBCXX_ENABLE_CHEADERS($c_model) dnl c_model from configure.host 172GLIBCXX_ENABLE_LONG_LONG([yes]) 173GLIBCXX_ENABLE_WCHAR_T([yes]) 174GLIBCXX_ENABLE_C99([yes]) 175GLIBCXX_ENABLE_CONCEPT_CHECKS([no]) 176GLIBCXX_ENABLE_DEBUG_FLAGS(["-gdwarf-4 -g3 -O0 -D_GLIBCXX_ASSERTIONS"]) 177GLIBCXX_ENABLE_DEBUG([no]) 178GLIBCXX_ENABLE_PARALLEL([yes]) 179GLIBCXX_ENABLE_CXX_FLAGS 180GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING([no]) 181GLIBCXX_ENABLE_EXTERN_TEMPLATE([yes]) 182GLIBCXX_ENABLE_PYTHON 183GLIBCXX_ENABLE_WERROR([no]) 184GLIBCXX_ENABLE_VTABLE_VERIFY([no]) 185 186# Checks for operating systems support that doesn't require linking. 187GLIBCXX_CHECK_STDIO_PROTO 188GLIBCXX_CHECK_MATH11_PROTO 189GLIBCXX_CHECK_UCHAR_H 190 191# For the streamoff typedef. 192GLIBCXX_CHECK_INT64_T 193 194# For LFS support. 195GLIBCXX_CHECK_LFS 196 197# For showmanyc_helper(). 198AC_CHECK_HEADERS(sys/ioctl.h sys/filio.h) 199GLIBCXX_CHECK_POLL 200GLIBCXX_CHECK_S_ISREG_OR_S_IFREG 201 202# For xsputn_2(). 203AC_CHECK_HEADERS(sys/uio.h) 204GLIBCXX_CHECK_WRITEV 205 206# Check for fenv.h and complex.h before GLIBCXX_CHECK_C99_TR1 207# so that the check is done with the C compiler (not C++). 208# Checking with C++ can break a canadian cross build if either 209# file does not exist in C but does in C++. 210AC_CHECK_HEADERS(fenv.h complex.h) 211 212# For C99 support to TR1. 213GLIBCXX_CHECK_C99_TR1 214 215# For the EOF, SEEK_CUR, and SEEK_END integer constants. 216GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS 217 218# For gettimeofday support. 219GLIBCXX_CHECK_GETTIMEOFDAY 220 221# For clock_gettime, nanosleep and sched_yield support. 222GLIBCXX_ENABLE_LIBSTDCXX_TIME 223 224# Check for tmpnam which is obsolescent in POSIX.1-2008 225GLIBCXX_CHECK_TMPNAM 226 227# For pthread_cond_clockwait 228GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT 229 230# For pthread_mutex_clocklock 231GLIBCXX_CHECK_PTHREAD_MUTEX_CLOCKLOCK 232 233# For pthread_rwlock_clockrdlock and pthread_rwlock_clockwrlock 234GLIBCXX_CHECK_PTHREAD_RWLOCK_CLOCKLOCK 235 236AC_LC_MESSAGES 237 238# For hardware_concurrency 239AC_CHECK_HEADERS(sys/sysinfo.h) 240GLIBCXX_CHECK_GET_NPROCS 241AC_CHECK_HEADERS(unistd.h) 242GLIBCXX_CHECK_SC_NPROCESSORS_ONLN 243GLIBCXX_CHECK_SC_NPROC_ONLN 244GLIBCXX_CHECK_PTHREADS_NUM_PROCESSORS_NP 245GLIBCXX_CHECK_SYSCTL_HW_NCPU 246GLIBCXX_CHECK_SDT_H 247 248# Check for available headers. 249AC_CHECK_HEADERS([endian.h execinfo.h float.h fp.h ieeefp.h inttypes.h \ 250locale.h machine/endian.h machine/param.h nan.h stdint.h stdlib.h string.h \ 251strings.h sys/ipc.h sys/isa_defs.h sys/machine.h sys/param.h \ 252sys/resource.h sys/sem.h sys/stat.h sys/time.h sys/types.h unistd.h \ 253wchar.h wctype.h linux/types.h]) 254 255AC_CHECK_HEADERS([linux/random.h], [], [], 256[[#ifdef HAVE_LINUX_TYPES_H 257# include <linux/types.h> 258#endif 259]]) 260 261# Only do link tests if native. Else, hardcode. 262if $GLIBCXX_IS_NATIVE; then 263 264 # We can do more elaborate tests that assume a working linker. 265 CANADIAN=no 266 267 GLIBCXX_CHECK_LINKER_FEATURES 268 GLIBCXX_CHECK_MATH_SUPPORT 269 GLIBCXX_CHECK_STDLIB_SUPPORT 270 271 # For /dev/random and /dev/urandom for std::random_device. 272 GLIBCXX_CHECK_DEV_RANDOM 273 274 # For TLS support. 275 GCC_CHECK_TLS 276 277 AC_CHECK_FUNCS(__cxa_thread_atexit_impl __cxa_thread_atexit) 278 AC_CHECK_FUNCS(aligned_alloc posix_memalign memalign _aligned_malloc) 279 AC_CHECK_FUNCS(_wfopen) 280 281 # C11 functions for C++17 library 282 AC_CHECK_FUNCS(timespec_get) 283 284 # For Networking TS. 285 AC_CHECK_FUNCS(sockatmark) 286 287 # For iconv support. 288 AM_ICONV 289 290else 291 292 # This lets us hard-code the functionality we know we'll have in the cross 293 # target environment. "Let" is a sugar-coated word placed on an especially 294 # dull and tedious hack, actually. 295 # 296 # Here's why GLIBCXX_CHECK_MATH_SUPPORT, and other autoconf macros 297 # that involve linking, can't be used: 298 # "cannot open sim-crt0.o" 299 # "cannot open crt0.o" 300 # etc. All this is because there currently exists no unified, consistent 301 # way for top level CC information to be passed down to target directories: 302 # newlib includes, newlib linking info, libgloss versus newlib crt0.o, etc. 303 # When all of that is done, all of this hokey, excessive AC_DEFINE junk for 304 # crosses can be removed. 305 306 # If Canadian cross, then don't pick up tools from the build directory. 307 # Used only in GLIBCXX_EXPORT_INCLUDES. 308 if test -n "$with_cross_host" && 309 test x"$build_alias" != x"$with_cross_host" && 310 test x"$build" != x"$target"; 311 then 312 CANADIAN=yes 313 else 314 CANADIAN=no 315 fi 316 317 # Construct crosses by hand, eliminating bits that need ld... 318 # GLIBCXX_CHECK_MATH_SUPPORT 319 320 # First, test for "known" system libraries. We may be using newlib even 321 # on a hosted environment. 322 if test "x${with_newlib}" = "xyes"; then 323 os_include_dir="os/newlib" 324 AC_DEFINE(HAVE_HYPOT) 325 326 # GLIBCXX_CHECK_STDLIB_SUPPORT 327 AC_DEFINE(HAVE_STRTOF) 328 329 AC_DEFINE(HAVE_ACOSF) 330 AC_DEFINE(HAVE_ASINF) 331 AC_DEFINE(HAVE_ATAN2F) 332 AC_DEFINE(HAVE_ATANF) 333 AC_DEFINE(HAVE_CEILF) 334 AC_DEFINE(HAVE_COSF) 335 AC_DEFINE(HAVE_COSHF) 336 AC_DEFINE(HAVE_EXPF) 337 AC_DEFINE(HAVE_FABSF) 338 AC_DEFINE(HAVE_FLOORF) 339 AC_DEFINE(HAVE_FMODF) 340 AC_DEFINE(HAVE_FREXPF) 341 AC_DEFINE(HAVE_LDEXPF) 342 AC_DEFINE(HAVE_LOG10F) 343 AC_DEFINE(HAVE_LOGF) 344 AC_DEFINE(HAVE_MODFF) 345 AC_DEFINE(HAVE_POWF) 346 AC_DEFINE(HAVE_SINF) 347 AC_DEFINE(HAVE_SINHF) 348 AC_DEFINE(HAVE_SQRTF) 349 AC_DEFINE(HAVE_TANF) 350 AC_DEFINE(HAVE_TANHF) 351 352 AC_DEFINE(HAVE_ICONV) 353 AC_DEFINE(HAVE_MEMALIGN) 354 else 355 GLIBCXX_CROSSCONFIG 356 fi 357 358 # At some point, we should differentiate between architectures 359 # like x86, which have long double versions, and alpha/powerpc/etc., 360 # which don't. For the time being, punt. 361 if test x"long_double_math_on_this_cpu" = x"yes"; then 362 AC_DEFINE(HAVE_ACOSL) 363 AC_DEFINE(HAVE_ASINL) 364 AC_DEFINE(HAVE_ATAN2L) 365 AC_DEFINE(HAVE_ATANL) 366 AC_DEFINE(HAVE_CEILL) 367 AC_DEFINE(HAVE_COSL) 368 AC_DEFINE(HAVE_COSHL) 369 AC_DEFINE(HAVE_EXPL) 370 AC_DEFINE(HAVE_FABSL) 371 AC_DEFINE(HAVE_FLOORL) 372 AC_DEFINE(HAVE_FMODL) 373 AC_DEFINE(HAVE_FREXPL) 374 AC_DEFINE(HAVE_LDEXPL) 375 AC_DEFINE(HAVE_LOG10L) 376 AC_DEFINE(HAVE_LOGL) 377 AC_DEFINE(HAVE_MODFL) 378 AC_DEFINE(HAVE_POWL) 379 AC_DEFINE(HAVE_SINCOSL) 380 AC_DEFINE(HAVE_SINL) 381 AC_DEFINE(HAVE_SINHL) 382 AC_DEFINE(HAVE_SQRTL) 383 AC_DEFINE(HAVE_TANL) 384 AC_DEFINE(HAVE_TANHL) 385 fi 386fi 387 388# Check for _Unwind_GetIPInfo. 389GCC_CHECK_UNWIND_GETIPINFO 390 391GCC_LINUX_FUTEX([AC_DEFINE(HAVE_LINUX_FUTEX, 1, [Define if futex syscall is available.])]) 392 393GCC_HEADER_STDINT(include/gstdint.h) 394 395GLIBCXX_ENABLE_SYMVERS([yes]) 396AC_SUBST(libtool_VERSION) 397 398GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY([yes]) 399 400GLIBCXX_ENABLE_LIBSTDCXX_DUAL_ABI([yes]) 401GLIBCXX_DEFAULT_ABI 402 403ac_ldbl_compat=no 404LONG_DOUBLE_COMPAT_FLAGS="-mlong-double-64" 405case "$target" in 406 powerpc*-*-linux* | \ 407 sparc*-*-linux* | \ 408 s390*-*-linux* | \ 409 alpha*-*-linux*) 410 AC_TRY_COMPILE(, [ 411#if !defined __LONG_DOUBLE_128__ || (defined(__sparc__) && defined(__arch64__)) 412#error no need for long double compatibility 413#endif 414 ], [ac_ldbl_compat=yes], [ac_ldbl_compat=no]) 415 if test "$ac_ldbl_compat" = yes; then 416 AC_DEFINE([_GLIBCXX_LONG_DOUBLE_COMPAT],1, 417 [Define if compatibility should be provided for -mlong-double-64.]) 418 port_specific_symbol_files="\$(top_srcdir)/config/os/gnu-linux/ldbl-extra.ver" 419 case "$target" in 420 powerpc*-*-linux*) 421 LONG_DOUBLE_COMPAT_FLAGS="$LONG_DOUBLE_COMPAT_FLAGS -mno-gnu-attribute" ;; 422 esac 423 fi 424esac 425AC_SUBST(LONG_DOUBLE_COMPAT_FLAGS) 426GLIBCXX_CONDITIONAL(GLIBCXX_LDBL_COMPAT, test $ac_ldbl_compat = yes) 427 428# Check if assembler supports disabling hardware capability support. 429GCC_CHECK_ASSEMBLER_HWCAP 430 431# Check if assembler supports rdrand opcode. 432GLIBCXX_CHECK_X86_RDRAND 433# Check if assembler supports rdseed opcode. 434GLIBCXX_CHECK_X86_RDSEED 435 436# This depends on GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE. 437GLIBCXX_CONFIGURE_TESTSUITE 438 439# For gthread support. Depends on GLIBCXX_ENABLE_SYMVERS. 440GLIBCXX_CHECK_GTHREADS 441 442# For Filesystem TS. 443AC_CHECK_HEADERS([fcntl.h dirent.h sys/statvfs.h utime.h]) 444GLIBCXX_ENABLE_FILESYSTEM_TS 445GLIBCXX_CHECK_FILESYSTEM_DEPS 446 447# For Networking TS. 448AC_CHECK_HEADERS([fcntl.h sys/ioctl.h sys/socket.h sys/uio.h poll.h netdb.h arpa/inet.h netinet/in.h netinet/tcp.h]) 449 450# For Transactional Memory TS 451GLIBCXX_CHECK_SIZE_T_MANGLING 452 453# Check which release added std::exception_ptr for the target 454GLIBCXX_CHECK_EXCEPTION_PTR_SYMVER 455 456# Define documentation rules conditionally. 457 458# See if makeinfo has been installed and is modern enough 459# that we can use it. 460ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version], 461 [GNU texinfo.* \([0-9][0-9.]*\)], 462 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*]) 463AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes") 464 465# Check for doxygen 466AC_CHECK_PROG([DOXYGEN], doxygen, yes, no) 467AC_CHECK_PROG([DOT], dot, yes, no) 468 469# Check for docbook 470AC_CHECK_PROG([XMLCATALOG], xmlcatalog, yes, no) 471AC_CHECK_PROG([XSLTPROC], xsltproc, yes, no) 472AC_CHECK_PROG([XMLLINT], xmllint, yes, no) 473GLIBCXX_CONFIGURE_DOCBOOK 474 475# Check for xml/html dependencies. 476AM_CONDITIONAL(BUILD_XML, 477 test $ac_cv_prog_DOXYGEN = "yes" && 478 test $ac_cv_prog_DOT = "yes" && 479 test $ac_cv_prog_XSLTPROC = "yes" && 480 test $ac_cv_prog_XMLLINT = "yes" && 481 test $glibcxx_stylesheets = "yes") 482 483AM_CONDITIONAL(BUILD_HTML, 484 test $ac_cv_prog_DOXYGEN = "yes" && 485 test $ac_cv_prog_DOT = "yes" && 486 test $ac_cv_prog_XSLTPROC = "yes" && 487 test $ac_cv_prog_XMLLINT = "yes" && 488 test $glibcxx_stylesheets = "yes") 489 490# Check for man dependencies. 491AM_CONDITIONAL(BUILD_MAN, 492 test $ac_cv_prog_DOXYGEN = "yes" && 493 test $ac_cv_prog_DOT = "yes") 494 495# Check for pdf dependencies. 496AC_CHECK_PROG([DBLATEX], dblatex, yes, no) 497AC_CHECK_PROG([PDFLATEX], pdflatex, yes, no) 498AM_CONDITIONAL(BUILD_PDF, 499 test $ac_cv_prog_DOXYGEN = "yes" && 500 test $ac_cv_prog_DOT = "yes" && 501 test $ac_cv_prog_XSLTPROC = "yes" && 502 test $ac_cv_prog_XMLLINT = "yes" && 503 test $ac_cv_prog_DBLATEX = "yes" && 504 test $ac_cv_prog_PDFLATEX = "yes") 505 506case "$build" in 507 *-*-darwin* ) glibcxx_include_dir_notparallel=yes ;; 508 * ) glibcxx_include_dir_notparallel=no ;; 509esac 510AM_CONDITIONAL(INCLUDE_DIR_NOTPARALLEL, 511 test $glibcxx_include_dir_notparallel = "yes") 512 513# Propagate the target-specific source directories through the build chain. 514ATOMICITY_SRCDIR=config/${atomicity_dir} 515ATOMIC_WORD_SRCDIR=config/${atomic_word_dir} 516ATOMIC_FLAGS=${atomic_flags} 517CPU_DEFINES_SRCDIR=config/${cpu_defines_dir} 518OS_INC_SRCDIR=config/${os_include_dir} 519ERROR_CONSTANTS_SRCDIR=config/${error_constants_dir} 520ABI_TWEAKS_SRCDIR=config/${abi_tweaks_dir} 521CPU_OPT_EXT_RANDOM=config/${cpu_opt_ext_random} 522CPU_OPT_BITS_RANDOM=config/${cpu_opt_bits_random} 523AC_SUBST(ATOMICITY_SRCDIR) 524AC_SUBST(ATOMIC_WORD_SRCDIR) 525AC_SUBST(ATOMIC_FLAGS) 526AC_SUBST(CPU_DEFINES_SRCDIR) 527AC_SUBST(ABI_TWEAKS_SRCDIR) 528AC_SUBST(OS_INC_SRCDIR) 529AC_SUBST(ERROR_CONSTANTS_SRCDIR) 530AC_SUBST(CPU_OPT_EXT_RANDOM) 531AC_SUBST(CPU_OPT_BITS_RANDOM) 532 533 534# Add CET specific flags if Intel CET is enabled. 535GCC_CET_FLAGS(CET_FLAGS) 536EXTRA_CXX_FLAGS="$EXTRA_CXX_FLAGS $CET_FLAGS" 537EXTRA_CFLAGS="$EXTRA_CFLAGS $CET_FLAGS" 538AC_SUBST(EXTRA_CFLAGS) 539AC_SUBST(EXTRA_CXX_FLAGS) 540 541# Determine cross-compile flags and AM_CONDITIONALs. 542#AC_SUBST(GLIBCXX_IS_NATIVE) 543#AM_CONDITIONAL(CANADIAN, test $CANADIAN = yes) 544GLIBCXX_EVALUATE_CONDITIONALS 545 546AC_CACHE_SAVE 547 548if test ${multilib} = yes; then 549 multilib_arg="--enable-multilib" 550else 551 multilib_arg= 552fi 553 554# Export all the install information. 555GLIBCXX_EXPORT_INSTALL_INFO 556 557# Export all the include and flag information to Makefiles. 558GLIBCXX_EXPORT_INCLUDES 559GLIBCXX_EXPORT_FLAGS 560 561# Determine what GCC version number to use in filesystem paths. 562GCC_BASE_VER 563 564dnl In autoconf 2.5x, AC_OUTPUT is replaced by four AC_CONFIG_* macros, 565dnl which can all be called multiple times as needed, plus one (different) 566dnl AC_OUTPUT macro. This one lists the files to be created: 567AC_CONFIG_FILES(Makefile) 568AC_CONFIG_FILES([scripts/testsuite_flags],[chmod +x scripts/testsuite_flags]) 569AC_CONFIG_FILES([scripts/extract_symvers],[chmod +x scripts/extract_symvers]) 570AC_CONFIG_FILES([doc/xsl/customization.xsl]) 571 572# Multilibs need MULTISUBDIR defined correctly in certain makefiles so 573# that multilib installs will end up installed in the correct place. 574# The testsuite needs it for multilib-aware ABI baseline files. 575# To work around this not being passed down from config-ml.in -> 576# srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually 577# append it here. Only modify Makefiles that have just been created. 578# 579# Also, get rid of this simulated-VPATH thing that automake does. 580AC_CONFIG_FILES(AC_FOREACH([DIR], glibcxx_SUBDIRS, [DIR/Makefile ]), 581 [cat > vpsed$$ << \_EOF 582s!`test -f '$<' || echo '$(srcdir)/'`!! 583_EOF 584 sed -f vpsed$$ $ac_file > tmp$$ 585 mv tmp$$ $ac_file 586 rm vpsed$$ 587 echo 'MULTISUBDIR =' >> $ac_file 588 ml_norecursion=yes 589 . ${multi_basedir}/config-ml.in 590 AS_UNSET([ml_norecursion]) 591]) 592 593AC_CONFIG_COMMANDS([generate-headers], 594 [(cd include && ${MAKE-make} pch_build= )]) 595 596dnl And this actually makes things happen: 597AC_OUTPUT 598