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