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