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_SYSTEM_ERROR 190GLIBCXX_CHECK_UCHAR_H 191 192# For the streamoff typedef. 193GLIBCXX_CHECK_INT64_T 194 195# For LFS support. 196GLIBCXX_CHECK_LFS 197 198# For showmanyc_helper(). 199AC_CHECK_HEADERS(sys/ioctl.h sys/filio.h) 200GLIBCXX_CHECK_POLL 201GLIBCXX_CHECK_S_ISREG_OR_S_IFREG 202 203# For xsputn_2(). 204AC_CHECK_HEADERS(sys/uio.h) 205GLIBCXX_CHECK_WRITEV 206 207# Check for fenv.h and complex.h before GLIBCXX_CHECK_C99_TR1 208# so that the check is done with the C compiler (not C++). 209# Checking with C++ can break a canadian cross build if either 210# file does not exist in C but does in C++. 211AC_CHECK_HEADERS(fenv.h complex.h) 212 213# For C99 support to TR1. 214GLIBCXX_CHECK_C99_TR1 215 216# For the EOF, SEEK_CUR, and SEEK_END integer constants. 217GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS 218 219# For gettimeofday support. 220GLIBCXX_CHECK_GETTIMEOFDAY 221 222# For clock_gettime, nanosleep and sched_yield support. 223GLIBCXX_ENABLE_LIBSTDCXX_TIME 224 225# Check for tmpnam which is obsolescent in POSIX.1-2008 226GLIBCXX_CHECK_TMPNAM 227 228AC_LC_MESSAGES 229 230# For hardware_concurrency 231AC_CHECK_HEADERS(sys/sysinfo.h) 232GLIBCXX_CHECK_GET_NPROCS 233AC_CHECK_HEADERS(unistd.h) 234GLIBCXX_CHECK_SC_NPROCESSORS_ONLN 235GLIBCXX_CHECK_SC_NPROC_ONLN 236GLIBCXX_CHECK_PTHREADS_NUM_PROCESSORS_NP 237GLIBCXX_CHECK_SYSCTL_HW_NCPU 238GLIBCXX_CHECK_SDT_H 239 240# Check for available headers. 241AC_CHECK_HEADERS([endian.h execinfo.h float.h fp.h ieeefp.h inttypes.h \ 242locale.h machine/endian.h machine/param.h nan.h stdint.h stdlib.h string.h \ 243strings.h sys/ipc.h sys/isa_defs.h sys/machine.h sys/param.h \ 244sys/resource.h sys/sem.h sys/stat.h sys/time.h sys/types.h unistd.h \ 245wchar.h wctype.h linux/types.h]) 246 247AC_CHECK_HEADERS([linux/random.h], [], [], 248[[#ifdef HAVE_LINUX_TYPES_H 249# include <linux/types.h> 250#endif 251]]) 252 253# Only do link tests if native. Else, hardcode. 254if $GLIBCXX_IS_NATIVE; then 255 256 # We can do more elaborate tests that assume a working linker. 257 CANADIAN=no 258 259 GLIBCXX_CHECK_LINKER_FEATURES 260 GLIBCXX_CHECK_MATH_SUPPORT 261 GLIBCXX_CHECK_STDLIB_SUPPORT 262 263 # For /dev/random and /dev/urandom for std::random_device. 264 GLIBCXX_CHECK_DEV_RANDOM 265 266 # For TLS support. 267 GCC_CHECK_TLS 268 269 AC_CHECK_FUNCS(__cxa_thread_atexit_impl __cxa_thread_atexit) 270 AC_CHECK_FUNCS(aligned_alloc posix_memalign memalign _aligned_malloc) 271 AC_CHECK_FUNCS(_wfopen) 272 273 # C11 functions for C++17 library 274 AC_CHECK_FUNCS(timespec_get) 275 276 # For Networking TS. 277 AC_CHECK_FUNCS(sockatmark) 278 279 # For iconv support. 280 AM_ICONV 281 282else 283 284 # This lets us hard-code the functionality we know we'll have in the cross 285 # target environment. "Let" is a sugar-coated word placed on an especially 286 # dull and tedious hack, actually. 287 # 288 # Here's why GLIBCXX_CHECK_MATH_SUPPORT, and other autoconf macros 289 # that involve linking, can't be used: 290 # "cannot open sim-crt0.o" 291 # "cannot open crt0.o" 292 # etc. All this is because there currently exists no unified, consistent 293 # way for top level CC information to be passed down to target directories: 294 # newlib includes, newlib linking info, libgloss versus newlib crt0.o, etc. 295 # When all of that is done, all of this hokey, excessive AC_DEFINE junk for 296 # crosses can be removed. 297 298 # If Canadian cross, then don't pick up tools from the build directory. 299 # Used only in GLIBCXX_EXPORT_INCLUDES. 300 if test -n "$with_cross_host" && 301 test x"$build_alias" != x"$with_cross_host" && 302 test x"$build" != x"$target"; 303 then 304 CANADIAN=yes 305 else 306 CANADIAN=no 307 fi 308 309 # Construct crosses by hand, eliminating bits that need ld... 310 # GLIBCXX_CHECK_MATH_SUPPORT 311 312 # First, test for "known" system libraries. We may be using newlib even 313 # on a hosted environment. 314 if test "x${with_newlib}" = "xyes"; then 315 os_include_dir="os/newlib" 316 AC_DEFINE(HAVE_HYPOT) 317 318 # GLIBCXX_CHECK_STDLIB_SUPPORT 319 AC_DEFINE(HAVE_STRTOF) 320 321 AC_DEFINE(HAVE_ACOSF) 322 AC_DEFINE(HAVE_ASINF) 323 AC_DEFINE(HAVE_ATAN2F) 324 AC_DEFINE(HAVE_ATANF) 325 AC_DEFINE(HAVE_CEILF) 326 AC_DEFINE(HAVE_COSF) 327 AC_DEFINE(HAVE_COSHF) 328 AC_DEFINE(HAVE_EXPF) 329 AC_DEFINE(HAVE_FABSF) 330 AC_DEFINE(HAVE_FLOORF) 331 AC_DEFINE(HAVE_FMODF) 332 AC_DEFINE(HAVE_FREXPF) 333 AC_DEFINE(HAVE_LDEXPF) 334 AC_DEFINE(HAVE_LOG10F) 335 AC_DEFINE(HAVE_LOGF) 336 AC_DEFINE(HAVE_MODFF) 337 AC_DEFINE(HAVE_POWF) 338 AC_DEFINE(HAVE_SINF) 339 AC_DEFINE(HAVE_SINHF) 340 AC_DEFINE(HAVE_SQRTF) 341 AC_DEFINE(HAVE_TANF) 342 AC_DEFINE(HAVE_TANHF) 343 344 AC_DEFINE(HAVE_ICONV) 345 AC_DEFINE(HAVE_MEMALIGN) 346 else 347 GLIBCXX_CROSSCONFIG 348 fi 349 350 # At some point, we should differentiate between architectures 351 # like x86, which have long double versions, and alpha/powerpc/etc., 352 # which don't. For the time being, punt. 353 if test x"long_double_math_on_this_cpu" = x"yes"; then 354 AC_DEFINE(HAVE_ACOSL) 355 AC_DEFINE(HAVE_ASINL) 356 AC_DEFINE(HAVE_ATAN2L) 357 AC_DEFINE(HAVE_ATANL) 358 AC_DEFINE(HAVE_CEILL) 359 AC_DEFINE(HAVE_COSL) 360 AC_DEFINE(HAVE_COSHL) 361 AC_DEFINE(HAVE_EXPL) 362 AC_DEFINE(HAVE_FABSL) 363 AC_DEFINE(HAVE_FLOORL) 364 AC_DEFINE(HAVE_FMODL) 365 AC_DEFINE(HAVE_FREXPL) 366 AC_DEFINE(HAVE_LDEXPL) 367 AC_DEFINE(HAVE_LOG10L) 368 AC_DEFINE(HAVE_LOGL) 369 AC_DEFINE(HAVE_MODFL) 370 AC_DEFINE(HAVE_POWL) 371 AC_DEFINE(HAVE_SINCOSL) 372 AC_DEFINE(HAVE_SINL) 373 AC_DEFINE(HAVE_SINHL) 374 AC_DEFINE(HAVE_SQRTL) 375 AC_DEFINE(HAVE_TANL) 376 AC_DEFINE(HAVE_TANHL) 377 fi 378fi 379 380# Check for _Unwind_GetIPInfo. 381GCC_CHECK_UNWIND_GETIPINFO 382 383GCC_LINUX_FUTEX([AC_DEFINE(HAVE_LINUX_FUTEX, 1, [Define if futex syscall is available.])]) 384 385GCC_HEADER_STDINT(include/gstdint.h) 386 387GLIBCXX_ENABLE_SYMVERS([yes]) 388AC_SUBST(libtool_VERSION) 389 390GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY([yes]) 391 392GLIBCXX_ENABLE_LIBSTDCXX_DUAL_ABI([yes]) 393GLIBCXX_DEFAULT_ABI 394 395ac_ldbl_compat=no 396LONG_DOUBLE_COMPAT_FLAGS="-mlong-double-64" 397case "$target" in 398 powerpc*-*-linux* | \ 399 sparc*-*-linux* | \ 400 s390*-*-linux* | \ 401 alpha*-*-linux*) 402 AC_TRY_COMPILE(, [ 403#if !defined __LONG_DOUBLE_128__ || (defined(__sparc__) && defined(__arch64__)) 404#error no need for long double compatibility 405#endif 406 ], [ac_ldbl_compat=yes], [ac_ldbl_compat=no]) 407 if test "$ac_ldbl_compat" = yes; then 408 AC_DEFINE([_GLIBCXX_LONG_DOUBLE_COMPAT],1, 409 [Define if compatibility should be provided for -mlong-double-64.]) 410 port_specific_symbol_files="\$(top_srcdir)/config/os/gnu-linux/ldbl-extra.ver" 411 case "$target" in 412 powerpc*-*-linux*) 413 LONG_DOUBLE_COMPAT_FLAGS="$LONG_DOUBLE_COMPAT_FLAGS -mno-gnu-attribute" ;; 414 esac 415 fi 416esac 417AC_SUBST(LONG_DOUBLE_COMPAT_FLAGS) 418GLIBCXX_CONDITIONAL(GLIBCXX_LDBL_COMPAT, test $ac_ldbl_compat = yes) 419 420# Check if assembler supports disabling hardware capability support. 421GCC_CHECK_ASSEMBLER_HWCAP 422 423# Check if assembler supports rdrand opcode. 424GLIBCXX_CHECK_X86_RDRAND 425 426# This depends on GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE. 427GLIBCXX_CONFIGURE_TESTSUITE 428 429# For gthread support. Depends on GLIBCXX_ENABLE_SYMVERS. 430GLIBCXX_CHECK_GTHREADS 431 432# For Filesystem TS. 433AC_CHECK_HEADERS([fcntl.h dirent.h sys/statvfs.h utime.h]) 434GLIBCXX_ENABLE_FILESYSTEM_TS 435GLIBCXX_CHECK_FILESYSTEM_DEPS 436 437# For Networking TS. 438AC_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]) 439 440# For Transactional Memory TS 441GLIBCXX_CHECK_SIZE_T_MANGLING 442 443# Check which release added std::exception_ptr for the target 444GLIBCXX_CHECK_EXCEPTION_PTR_SYMVER 445 446# Define documentation rules conditionally. 447 448# See if makeinfo has been installed and is modern enough 449# that we can use it. 450ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version], 451 [GNU texinfo.* \([0-9][0-9.]*\)], 452 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*]) 453AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes") 454 455# Check for doxygen 456AC_CHECK_PROG([DOXYGEN], doxygen, yes, no) 457AC_CHECK_PROG([DOT], dot, yes, no) 458 459# Check for docbook 460AC_CHECK_PROG([XMLCATALOG], xmlcatalog, yes, no) 461AC_CHECK_PROG([XSLTPROC], xsltproc, yes, no) 462AC_CHECK_PROG([XMLLINT], xmllint, yes, no) 463GLIBCXX_CONFIGURE_DOCBOOK 464 465# Check for xml/html dependencies. 466AM_CONDITIONAL(BUILD_XML, 467 test $ac_cv_prog_DOXYGEN = "yes" && 468 test $ac_cv_prog_DOT = "yes" && 469 test $ac_cv_prog_XSLTPROC = "yes" && 470 test $ac_cv_prog_XMLLINT = "yes" && 471 test $glibcxx_stylesheets = "yes") 472 473AM_CONDITIONAL(BUILD_HTML, 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") 479 480# Check for man dependencies. 481AM_CONDITIONAL(BUILD_MAN, 482 test $ac_cv_prog_DOXYGEN = "yes" && 483 test $ac_cv_prog_DOT = "yes") 484 485# Check for pdf dependencies. 486AC_CHECK_PROG([DBLATEX], dblatex, yes, no) 487AC_CHECK_PROG([PDFLATEX], pdflatex, yes, no) 488AM_CONDITIONAL(BUILD_PDF, 489 test $ac_cv_prog_DBLATEX = "yes" && 490 test $ac_cv_prog_PDFLATEX = "yes") 491 492case "$build" in 493 *-*-darwin* ) glibcxx_include_dir_notparallel=yes ;; 494 * ) glibcxx_include_dir_notparallel=no ;; 495esac 496AM_CONDITIONAL(INCLUDE_DIR_NOTPARALLEL, 497 test $glibcxx_include_dir_notparallel = "yes") 498 499# Propagate the target-specific source directories through the build chain. 500ATOMICITY_SRCDIR=config/${atomicity_dir} 501ATOMIC_WORD_SRCDIR=config/${atomic_word_dir} 502ATOMIC_FLAGS=${atomic_flags} 503CPU_DEFINES_SRCDIR=config/${cpu_defines_dir} 504OS_INC_SRCDIR=config/${os_include_dir} 505ERROR_CONSTANTS_SRCDIR=config/${error_constants_dir} 506ABI_TWEAKS_SRCDIR=config/${abi_tweaks_dir} 507CPU_OPT_EXT_RANDOM=config/${cpu_opt_ext_random} 508CPU_OPT_BITS_RANDOM=config/${cpu_opt_bits_random} 509AC_SUBST(ATOMICITY_SRCDIR) 510AC_SUBST(ATOMIC_WORD_SRCDIR) 511AC_SUBST(ATOMIC_FLAGS) 512AC_SUBST(CPU_DEFINES_SRCDIR) 513AC_SUBST(ABI_TWEAKS_SRCDIR) 514AC_SUBST(OS_INC_SRCDIR) 515AC_SUBST(ERROR_CONSTANTS_SRCDIR) 516AC_SUBST(CPU_OPT_EXT_RANDOM) 517AC_SUBST(CPU_OPT_BITS_RANDOM) 518 519 520# Add CET specific flags if Intel CET is enabled. 521GCC_CET_FLAGS(CET_FLAGS) 522EXTRA_CXX_FLAGS="$EXTRA_CXX_FLAGS $CET_FLAGS" 523EXTRA_CFLAGS="$EXTRA_CFLAGS $CET_FLAGS" 524AC_SUBST(EXTRA_CFLAGS) 525AC_SUBST(EXTRA_CXX_FLAGS) 526 527# Determine cross-compile flags and AM_CONDITIONALs. 528#AC_SUBST(GLIBCXX_IS_NATIVE) 529#AM_CONDITIONAL(CANADIAN, test $CANADIAN = yes) 530GLIBCXX_EVALUATE_CONDITIONALS 531 532AC_CACHE_SAVE 533 534if test ${multilib} = yes; then 535 multilib_arg="--enable-multilib" 536else 537 multilib_arg= 538fi 539 540# Export all the install information. 541GLIBCXX_EXPORT_INSTALL_INFO 542 543# Export all the include and flag information to Makefiles. 544GLIBCXX_EXPORT_INCLUDES 545GLIBCXX_EXPORT_FLAGS 546 547# Determine what GCC version number to use in filesystem paths. 548GCC_BASE_VER 549 550dnl In autoconf 2.5x, AC_OUTPUT is replaced by four AC_CONFIG_* macros, 551dnl which can all be called multiple times as needed, plus one (different) 552dnl AC_OUTPUT macro. This one lists the files to be created: 553AC_CONFIG_FILES(Makefile) 554AC_CONFIG_FILES([scripts/testsuite_flags],[chmod +x scripts/testsuite_flags]) 555AC_CONFIG_FILES([scripts/extract_symvers],[chmod +x scripts/extract_symvers]) 556AC_CONFIG_FILES([doc/xsl/customization.xsl]) 557 558# Multilibs need MULTISUBDIR defined correctly in certain makefiles so 559# that multilib installs will end up installed in the correct place. 560# The testsuite needs it for multilib-aware ABI baseline files. 561# To work around this not being passed down from config-ml.in -> 562# srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually 563# append it here. Only modify Makefiles that have just been created. 564# 565# Also, get rid of this simulated-VPATH thing that automake does. 566AC_CONFIG_FILES(AC_FOREACH([DIR], glibcxx_SUBDIRS, [DIR/Makefile ]), 567 [cat > vpsed$$ << \_EOF 568s!`test -f '$<' || echo '$(srcdir)/'`!! 569_EOF 570 sed -f vpsed$$ $ac_file > tmp$$ 571 mv tmp$$ $ac_file 572 rm vpsed$$ 573 echo 'MULTISUBDIR =' >> $ac_file 574 ml_norecursion=yes 575 . ${multi_basedir}/config-ml.in 576 AS_UNSET([ml_norecursion]) 577]) 578 579AC_CONFIG_COMMANDS([generate-headers], 580 [(cd include && ${MAKE-make} pch_build= )]) 581 582dnl And this actually makes things happen: 583AC_OUTPUT 584