1# Process this file with autoreconf to produce a configure script. 2 3AC_PREREQ(2.64) 4AC_INIT(package-unused, version-unused,, libstdc++) 5AC_CONFIG_SRCDIR(src/shared/hashtable-aux.cc) 6AC_CONFIG_HEADER(config.h) 7 8# This works around the fact that libtool configuration may change LD 9# for this particular configuration, but some shells, instead of 10# keeping the changes in LD private, export them just because LD is 11# exported. Only used at the end of this file. 12### am handles this now? ORIGINAL_LD_FOR_MULTILIBS=$LD 13 14# Find the rest of the source tree framework. 15AM_ENABLE_MULTILIB(, ..) 16 17# Gets build, host, target, *_vendor, *_cpu, *_os, etc. 18# 19# You will slowly go insane if you do not grok the following fact: when 20# building v3 as part of the compiler, the top-level /target/ becomes the 21# library's /host/. configure then causes --target to default to --host, 22# exactly like any other package using autoconf. Therefore, 'target' and 23# 'host' will always be the same. This makes sense both for native and 24# cross compilers, just think about it for a little while. :-) 25# 26# Also, if v3 is being configured as part of a cross compiler, the top-level 27# configure script will pass the "real" host as $with_cross_host. 28# 29# Do not delete or change the following two lines. For why, see 30# http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html 31AC_CANONICAL_SYSTEM 32target_alias=${target_alias-$host_alias} 33 34# Handy for debugging: 35#AC_MSG_NOTICE($build / $host / $target / $host_alias / $target_alias); sleep 5 36 37if test "$build" != "$host"; then 38 # We are being configured with some form of cross compiler. 39 GLIBCXX_IS_NATIVE=false 40 case "$host","$target" in 41 # Darwin crosses can use the host system's libraries and headers, 42 # because of the fat library support. Of course, it must be the 43 # same version of Darwin on both sides. Allow the user to 44 # just say --target=foo-darwin without a version number to mean 45 # "the version on this system". 46 *-*-darwin*,*-*-darwin*) 47 hostos=`echo $host | sed 's/.*-darwin/darwin/'` 48 targetos=`echo $target | sed 's/.*-darwin/darwin/'` 49 if test $hostos = $targetos -o $targetos = darwin ; then 50 GLIBCXX_IS_NATIVE=true 51 fi 52 ;; 53 54 *) 55 GCC_NO_EXECUTABLES 56 ;; 57 esac 58else 59 GLIBCXX_IS_NATIVE=true 60fi 61 62# Sets up automake. Must come after AC_CANONICAL_SYSTEM. Each of the 63# following is magically included in AUTOMAKE_OPTIONS in each Makefile.am. 64# 1.x: minimum required version 65# no-define: PACKAGE and VERSION will not be #define'd in config.h (a bunch 66# of other PACKAGE_* variables will, however, and there's nothing 67# we can do about that; they come from AC_INIT). 68# foreign: we don't follow the normal rules for GNU packages (no COPYING 69# file in the top srcdir, etc, etc), so stop complaining. 70# no-dependencies: turns off auto dependency generation (just for now) 71# no-dist: we don't want 'dist' and related rules. 72# -Wall: turns on all automake warnings... 73# -Wno-portability: ...except this one, since GNU make is now required. 74AM_INIT_AUTOMAKE([1.9.3 no-define foreign no-dependencies no-dist -Wall -Wno-portability -Wno-override]) 75AH_TEMPLATE(PACKAGE, [Name of package]) 76AH_TEMPLATE(VERSION, [Version number of package]) 77 78# -fno-builtin must be present here so that a non-conflicting form of 79# std::exit can be guessed by AC_PROG_CXX, and used in later tests. 80 81save_CXXFLAGS="$CXXFLAGS" 82CXXFLAGS="$CXXFLAGS -fno-builtin" 83AC_PROG_CC 84AC_PROG_CXX 85CXXFLAGS="$save_CXXFLAGS" 86 87# Runs configure.host, and assorted other critical bits. Sets 88# up critical shell variables. 89GLIBCXX_CONFIGURE 90 91# Libtool setup. 92if test "x${with_newlib}" != "xyes"; then 93 AC_LIBTOOL_DLOPEN 94fi 95AM_PROG_LIBTOOL 96ACX_LT_HOST_FLAGS 97AC_SUBST(enable_shared) 98AC_SUBST(enable_static) 99 100if test "$enable_vtable_verify" = yes; then 101 predep_objects_CXX="${predep_objects_CXX} ${glibcxx_builddir}/../libgcc/vtv_start.o" 102 postdep_objects_CXX="${postdep_objects_CXX} ${glibcxx_builddir}/../libgcc/vtv_end.o" 103fi 104 105 106# libtool variables for C++ shared and position-independent compiles. 107# 108# Use glibcxx_lt_pic_flag to designate the automake variable 109# used to encapsulate the default libtool approach to creating objects 110# with position-independent code. Default: -prefer-pic. 111# 112# Use glibcxx_compiler_shared_flag to designate a compile-time flags for 113# creating shared objects. Default: -D_GLIBCXX_SHARED. 114# 115# Use glibcxx_compiler_pic_flag to designate a compile-time flags for 116# creating position-independent objects. This varies with the target 117# hardware and operating system, but is often: -DPIC -fPIC. 118if test "$enable_shared" = yes; then 119 glibcxx_lt_pic_flag="-prefer-pic" 120 glibcxx_compiler_pic_flag="$lt_prog_compiler_pic_CXX" 121 glibcxx_compiler_shared_flag="-D_GLIBCXX_SHARED" 122 123else 124 glibcxx_lt_pic_flag= 125 glibcxx_compiler_pic_flag= 126 glibcxx_compiler_shared_flag= 127fi 128AC_SUBST(glibcxx_lt_pic_flag) 129AC_SUBST(glibcxx_compiler_pic_flag) 130AC_SUBST(glibcxx_compiler_shared_flag) 131 132# Override the libtool's pic_flag and pic_mode. 133# Do this step after AM_PROG_LIBTOOL, but before AC_OUTPUT. 134# NB: this impacts --with-pic and --without-pic. 135lt_prog_compiler_pic_CXX="$glibcxx_compiler_pic_flag $glibcxx_compiler_shared_flag" 136pic_mode='default' 137 138# Eliminate -lstdc++ addition to postdeps for cross compiles. 139postdeps_CXX=`echo " $postdeps_CXX " | sed 's, -lstdc++ ,,g'` 140 141# Possibly disable most of the library. 142## TODO: Consider skipping unncessary tests altogether in this case, rather 143## than just ignoring the results. Faster /and/ more correct, win win. 144GLIBCXX_ENABLE_HOSTED 145 146# Enable descriptive messages to standard output on termination. 147GLIBCXX_ENABLE_VERBOSE 148 149# Enable compiler support that doesn't require linking. 150GLIBCXX_ENABLE_PCH($is_hosted) 151GLIBCXX_ENABLE_THREADS 152GLIBCXX_ENABLE_ATOMIC_BUILTINS 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"]) 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([yes]) 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 $GLIBCXX_IS_NATIVE; then 250 251 # We can do more elaborate tests that assume a working linker. 252 CANADIAN=no 253 254 GLIBCXX_CHECK_LINKER_FEATURES 255 GLIBCXX_CHECK_MATH_SUPPORT 256 GLIBCXX_CHECK_STDLIB_SUPPORT 257 258 # For /dev/random and /dev/urandom for TR1. 259 GLIBCXX_CHECK_RANDOM_TR1 260 261 # For TLS support. 262 GCC_CHECK_TLS 263 264 AC_CHECK_FUNCS(__cxa_thread_atexit_impl __cxa_thread_atexit) 265 AC_CHECK_FUNCS(aligned_alloc posix_memalign memalign _aligned_malloc) 266 267 # For iconv support. 268 AM_ICONV 269 270else 271 272 # This lets us hard-code the functionality we know we'll have in the cross 273 # target environment. "Let" is a sugar-coated word placed on an especially 274 # dull and tedious hack, actually. 275 # 276 # Here's why GLIBCXX_CHECK_MATH_SUPPORT, and other autoconf macros 277 # that involve linking, can't be used: 278 # "cannot open sim-crt0.o" 279 # "cannot open crt0.o" 280 # etc. All this is because there currently exists no unified, consistent 281 # way for top level CC information to be passed down to target directories: 282 # newlib includes, newlib linking info, libgloss versus newlib crt0.o, etc. 283 # When all of that is done, all of this hokey, excessive AC_DEFINE junk for 284 # crosses can be removed. 285 286 # If Canadian cross, then don't pick up tools from the build directory. 287 # Used only in GLIBCXX_EXPORT_INCLUDES. 288 if test -n "$with_cross_host" && 289 test x"$build_alias" != x"$with_cross_host" && 290 test x"$build" != x"$target"; 291 then 292 CANADIAN=yes 293 else 294 CANADIAN=no 295 fi 296 297 # Construct crosses by hand, eliminating bits that need ld... 298 # GLIBCXX_CHECK_MATH_SUPPORT 299 300 # First, test for "known" system libraries. We may be using newlib even 301 # on a hosted environment. 302 if test "x${with_newlib}" = "xyes"; then 303 os_include_dir="os/newlib" 304 AC_DEFINE(HAVE_HYPOT) 305 306 # GLIBCXX_CHECK_STDLIB_SUPPORT 307 AC_DEFINE(HAVE_STRTOF) 308 309 AC_DEFINE(HAVE_ACOSF) 310 AC_DEFINE(HAVE_ASINF) 311 AC_DEFINE(HAVE_ATAN2F) 312 AC_DEFINE(HAVE_ATANF) 313 AC_DEFINE(HAVE_CEILF) 314 AC_DEFINE(HAVE_COSF) 315 AC_DEFINE(HAVE_COSHF) 316 AC_DEFINE(HAVE_EXPF) 317 AC_DEFINE(HAVE_FABSF) 318 AC_DEFINE(HAVE_FLOORF) 319 AC_DEFINE(HAVE_FMODF) 320 AC_DEFINE(HAVE_FREXPF) 321 AC_DEFINE(HAVE_LDEXPF) 322 AC_DEFINE(HAVE_LOG10F) 323 AC_DEFINE(HAVE_LOGF) 324 AC_DEFINE(HAVE_MODFF) 325 AC_DEFINE(HAVE_POWF) 326 AC_DEFINE(HAVE_SINF) 327 AC_DEFINE(HAVE_SINHF) 328 AC_DEFINE(HAVE_SQRTF) 329 AC_DEFINE(HAVE_TANF) 330 AC_DEFINE(HAVE_TANHF) 331 332 AC_DEFINE(HAVE_ICONV) 333 AC_DEFINE(HAVE_MEMALIGN) 334 else 335 GLIBCXX_CROSSCONFIG 336 fi 337 338 # At some point, we should differentiate between architectures 339 # like x86, which have long double versions, and alpha/powerpc/etc., 340 # which don't. For the time being, punt. 341 if test x"long_double_math_on_this_cpu" = x"yes"; then 342 AC_DEFINE(HAVE_ACOSL) 343 AC_DEFINE(HAVE_ASINL) 344 AC_DEFINE(HAVE_ATAN2L) 345 AC_DEFINE(HAVE_ATANL) 346 AC_DEFINE(HAVE_CEILL) 347 AC_DEFINE(HAVE_COSL) 348 AC_DEFINE(HAVE_COSHL) 349 AC_DEFINE(HAVE_EXPL) 350 AC_DEFINE(HAVE_FABSL) 351 AC_DEFINE(HAVE_FLOORL) 352 AC_DEFINE(HAVE_FMODL) 353 AC_DEFINE(HAVE_FREXPL) 354 AC_DEFINE(HAVE_LDEXPL) 355 AC_DEFINE(HAVE_LOG10L) 356 AC_DEFINE(HAVE_LOGL) 357 AC_DEFINE(HAVE_MODFL) 358 AC_DEFINE(HAVE_POWL) 359 AC_DEFINE(HAVE_SINCOSL) 360 AC_DEFINE(HAVE_SINL) 361 AC_DEFINE(HAVE_SINHL) 362 AC_DEFINE(HAVE_SQRTL) 363 AC_DEFINE(HAVE_TANL) 364 AC_DEFINE(HAVE_TANHL) 365 fi 366fi 367 368# Check for _Unwind_GetIPInfo. 369GCC_CHECK_UNWIND_GETIPINFO 370 371GCC_LINUX_FUTEX([AC_DEFINE(HAVE_LINUX_FUTEX, 1, [Define if futex syscall is available.])]) 372 373GCC_HEADER_STDINT(include/gstdint.h) 374 375GLIBCXX_ENABLE_SYMVERS([yes]) 376AC_SUBST(libtool_VERSION) 377 378GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY([yes]) 379 380GLIBCXX_ENABLE_LIBSTDCXX_DUAL_ABI([yes]) 381GLIBCXX_DEFAULT_ABI 382 383ac_ldbl_compat=no 384LONG_DOUBLE_COMPAT_FLAGS="-mlong-double-64" 385case "$target" in 386 powerpc*-*-linux* | \ 387 sparc*-*-linux* | \ 388 s390*-*-linux* | \ 389 alpha*-*-linux*) 390 AC_TRY_COMPILE(, [ 391#if !defined __LONG_DOUBLE_128__ || (defined(__sparc__) && defined(__arch64__)) 392#error no need for long double compatibility 393#endif 394 ], [ac_ldbl_compat=yes], [ac_ldbl_compat=no]) 395 if test "$ac_ldbl_compat" = yes; then 396 AC_DEFINE([_GLIBCXX_LONG_DOUBLE_COMPAT],1, 397 [Define if compatibility should be provided for -mlong-double-64.]) 398 port_specific_symbol_files="\$(top_srcdir)/config/os/gnu-linux/ldbl-extra.ver" 399 case "$target" in 400 powerpc*-*-linux*) 401 LONG_DOUBLE_COMPAT_FLAGS="$LONG_DOUBLE_COMPAT_FLAGS -mno-gnu-attribute" ;; 402 esac 403 fi 404esac 405AC_SUBST(LONG_DOUBLE_COMPAT_FLAGS) 406GLIBCXX_CONDITIONAL(GLIBCXX_LDBL_COMPAT, test $ac_ldbl_compat = yes) 407 408# Check if assembler supports disabling hardware capability support. 409GCC_CHECK_ASSEMBLER_HWCAP 410 411# Check if assembler supports rdrand opcode. 412GLIBCXX_CHECK_X86_RDRAND 413 414# This depends on GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE. 415GLIBCXX_CONFIGURE_TESTSUITE 416 417# For gthread support. Depends on GLIBCXX_ENABLE_SYMVERS. 418GLIBCXX_CHECK_GTHREADS 419 420# For Filesystem TS. 421AC_CHECK_HEADERS([fcntl.h dirent.h sys/statvfs.h utime.h]) 422GLIBCXX_ENABLE_FILESYSTEM_TS 423GLIBCXX_CHECK_FILESYSTEM_DEPS 424 425# For Transactional Memory TS 426GLIBCXX_CHECK_SIZE_T_MANGLING 427 428# Check which release added std::exception_ptr for the target 429GLIBCXX_CHECK_EXCEPTION_PTR_SYMVER 430 431# Define documentation rules conditionally. 432 433# See if makeinfo has been installed and is modern enough 434# that we can use it. 435ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version], 436 [GNU texinfo.* \([0-9][0-9.]*\)], 437 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*]) 438AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes") 439 440# Check for doxygen 441AC_CHECK_PROG([DOXYGEN], doxygen, yes, no) 442AC_CHECK_PROG([DOT], dot, yes, no) 443 444# Check for docbook 445AC_CHECK_PROG([XSLTPROC], xsltproc, yes, no) 446AC_CHECK_PROG([XMLLINT], xmllint, yes, no) 447GLIBCXX_CONFIGURE_DOCBOOK 448 449# Check for xml/html dependencies. 450AM_CONDITIONAL(BUILD_XML, 451 test $ac_cv_prog_DOXYGEN = "yes" && 452 test $ac_cv_prog_DOT = "yes" && 453 test $ac_cv_prog_XSLTPROC = "yes" && 454 test $ac_cv_prog_XMLLINT = "yes" && 455 test $glibcxx_stylesheets = "yes") 456 457AM_CONDITIONAL(BUILD_HTML, 458 test $ac_cv_prog_DOXYGEN = "yes" && 459 test $ac_cv_prog_DOT = "yes" && 460 test $ac_cv_prog_XSLTPROC = "yes" && 461 test $ac_cv_prog_XMLLINT = "yes" && 462 test $glibcxx_stylesheets = "yes") 463 464# Check for man dependencies. 465AM_CONDITIONAL(BUILD_MAN, 466 test $ac_cv_prog_DOXYGEN = "yes" && 467 test $ac_cv_prog_DOT = "yes") 468 469# Check for pdf dependencies. 470AC_CHECK_PROG([DBLATEX], dblatex, yes, no) 471AC_CHECK_PROG([PDFLATEX], pdflatex, yes, no) 472AM_CONDITIONAL(BUILD_PDF, 473 test $ac_cv_prog_DBLATEX = "yes" && 474 test $ac_cv_prog_PDFLATEX = "yes") 475 476case "$build" in 477 *-*-darwin* ) glibcxx_include_dir_notparallel=yes ;; 478 * ) glibcxx_include_dir_notparallel=no ;; 479esac 480AM_CONDITIONAL(INCLUDE_DIR_NOTPARALLEL, 481 test $glibcxx_include_dir_notparallel = "yes") 482 483# Propagate the target-specific source directories through the build chain. 484ATOMICITY_SRCDIR=config/${atomicity_dir} 485ATOMIC_WORD_SRCDIR=config/${atomic_word_dir} 486ATOMIC_FLAGS=${atomic_flags} 487CPU_DEFINES_SRCDIR=config/${cpu_defines_dir} 488OS_INC_SRCDIR=config/${os_include_dir} 489ERROR_CONSTANTS_SRCDIR=config/${error_constants_dir} 490ABI_TWEAKS_SRCDIR=config/${abi_tweaks_dir} 491CPU_OPT_EXT_RANDOM=config/${cpu_opt_ext_random} 492CPU_OPT_BITS_RANDOM=config/${cpu_opt_bits_random} 493AC_SUBST(ATOMICITY_SRCDIR) 494AC_SUBST(ATOMIC_WORD_SRCDIR) 495AC_SUBST(ATOMIC_FLAGS) 496AC_SUBST(CPU_DEFINES_SRCDIR) 497AC_SUBST(ABI_TWEAKS_SRCDIR) 498AC_SUBST(OS_INC_SRCDIR) 499AC_SUBST(ERROR_CONSTANTS_SRCDIR) 500AC_SUBST(CPU_OPT_EXT_RANDOM) 501AC_SUBST(CPU_OPT_BITS_RANDOM) 502 503 504# Add CET specific flags if Intel CET is enabled. 505GCC_CET_FLAGS(CET_FLAGS) 506EXTRA_CXX_FLAGS="$EXTRA_CXX_FLAGS $CET_FLAGS" 507EXTRA_CFLAGS="$EXTRA_CFLAGS $CET_FLAGS" 508AC_SUBST(EXTRA_CFLAGS) 509AC_SUBST(EXTRA_CXX_FLAGS) 510 511# Determine cross-compile flags and AM_CONDITIONALs. 512#AC_SUBST(GLIBCXX_IS_NATIVE) 513#AM_CONDITIONAL(CANADIAN, test $CANADIAN = yes) 514GLIBCXX_EVALUATE_CONDITIONALS 515 516AC_CACHE_SAVE 517 518if test ${multilib} = yes; then 519 multilib_arg="--enable-multilib" 520else 521 multilib_arg= 522fi 523 524# Export all the install information. 525GLIBCXX_EXPORT_INSTALL_INFO 526 527# Export all the include and flag information to Makefiles. 528GLIBCXX_EXPORT_INCLUDES 529GLIBCXX_EXPORT_FLAGS 530 531# Determine what GCC version number to use in filesystem paths. 532GCC_BASE_VER 533 534dnl In autoconf 2.5x, AC_OUTPUT is replaced by four AC_CONFIG_* macros, 535dnl which can all be called multiple times as needed, plus one (different) 536dnl AC_OUTPUT macro. This one lists the files to be created: 537AC_CONFIG_FILES(Makefile) 538AC_CONFIG_FILES([scripts/testsuite_flags],[chmod +x scripts/testsuite_flags]) 539AC_CONFIG_FILES([scripts/extract_symvers],[chmod +x scripts/extract_symvers]) 540AC_CONFIG_FILES([doc/xsl/customization.xsl]) 541 542# Multilibs need MULTISUBDIR defined correctly in certain makefiles so 543# that multilib installs will end up installed in the correct place. 544# The testsuite needs it for multilib-aware ABI baseline files. 545# To work around this not being passed down from config-ml.in -> 546# srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually 547# append it here. Only modify Makefiles that have just been created. 548# 549# Also, get rid of this simulated-VPATH thing that automake does. 550AC_CONFIG_FILES(AC_FOREACH([DIR], glibcxx_SUBDIRS, [DIR/Makefile ]), 551 [cat > vpsed$$ << \_EOF 552s!`test -f '$<' || echo '$(srcdir)/'`!! 553_EOF 554 sed -f vpsed$$ $ac_file > tmp$$ 555 mv tmp$$ $ac_file 556 rm vpsed$$ 557 echo 'MULTISUBDIR =' >> $ac_file 558 ml_norecursion=yes 559 . ${multi_basedir}/config-ml.in 560 AS_UNSET([ml_norecursion]) 561]) 562 563AC_CONFIG_COMMANDS([generate-headers], 564 [(cd include && ${MAKE-make} pch_build= )]) 565 566dnl And this actually makes things happen: 567AC_OUTPUT 568