1 # Process this file with autoreconf to produce a configure script. 2 3 AC_INIT(package-unused, version-unused,, libstdc++) 4 AC_CONFIG_SRCDIR(src/shared/hashtable-aux.cc) 5 AC_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. 14 AM_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 $with_cross_host. 27 # 28 # Do not delete or change the following two lines. For why, see 29 # http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html 30 AC_CANONICAL_SYSTEM 31 target_alias=${target_alias-$host_alias} 32 33 # Handy for debugging: 34 #AC_MSG_NOTICE($build / $host / $target / $host_alias / $target_alias); sleep 5 35 36 if test "$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 $targetos = darwin ; then 52 GLIBCXX_IS_NATIVE=true 53 fi 54 ;; 55 56 *) 57 GCC_NO_EXECUTABLES 58 ;; 59 esac 60 else 61 GLIBCXX_IS_NATIVE=true 62 fi 63 64 # Sets up automake. Must come after AC_CANONICAL_SYSTEM. Each of the 65 # following is magically included in AUTOMAKE_OPTIONS in each Makefile.am. 66 # 1.x: minimum required version 67 # no-define: PACKAGE and VERSION will not be #define'd in config.h (a bunch 68 # of other PACKAGE_* variables will, however, and there's nothing 69 # we can do about that; they come from AC_INIT). 70 # foreign: we don't follow the normal rules for GNU packages (no COPYING 71 # file in the top srcdir, etc, etc), so stop complaining. 72 # no-dependencies: turns off auto dependency generation (just for now) 73 # no-dist: we don't want 'dist' and related rules. 74 # -Wall: turns on all automake warnings... 75 # -Wno-portability: ...except this one, since GNU make is now required. 76 AM_INIT_AUTOMAKE([1.9.3 no-define foreign no-dependencies no-dist -Wall -Wno-portability -Wno-override]) 77 AH_TEMPLATE(PACKAGE, [Name of package]) 78 AH_TEMPLATE(VERSION, [Version number of package]) 79 80 # -fno-builtin must be present here so that a non-conflicting form of 81 # std::exit can be guessed by AC_PROG_CXX, and used in later tests. 82 83 save_CXXFLAGS="$CXXFLAGS" 84 CXXFLAGS="$CXXFLAGS -fno-builtin" 85 AC_PROG_CC 86 AC_PROG_CXX 87 CXXFLAGS="$save_CXXFLAGS" 88 89 AC_SYS_LARGEFILE 90 91 # Runs configure.host, and assorted other critical bits. Sets 92 # up critical shell variables. 93 GLIBCXX_CONFIGURE 94 95 # Libtool setup. 96 if test "x${with_newlib}" != "xyes" && 97 test "x${with_avrlibc}" != "xyes" && 98 test "x$with_headers" != "xno"; then 99 AC_LIBTOOL_DLOPEN 100 fi 101 AM_PROG_LIBTOOL 102 ACX_LT_HOST_FLAGS 103 AC_SUBST(enable_shared) 104 AC_SUBST(enable_static) 105 106 os_is_darwin=no 107 case ${host_os} in 108 darwin*) os_is_darwin=yes ;; 109 *) ;; 110 esac 111 AM_CONDITIONAL([OS_IS_DARWIN], [test x${os_is_darwin} = xyes]) 112 113 if test "$enable_vtable_verify" = yes; then 114 predep_objects_CXX="${predep_objects_CXX} ${glibcxx_builddir}/../libgcc/vtv_start.o" 115 postdep_objects_CXX="${postdep_objects_CXX} ${glibcxx_builddir}/../libgcc/vtv_end.o" 116 fi 117 118 119 # libtool variables for C++ shared and position-independent compiles. 120 # 121 # Use glibcxx_lt_pic_flag to designate the automake variable 122 # used to encapsulate the default libtool approach to creating objects 123 # with position-independent code. Default: -prefer-pic. 124 # 125 # Use glibcxx_compiler_shared_flag to designate a compile-time flags for 126 # creating shared objects. Default: -D_GLIBCXX_SHARED. 127 # 128 # Use glibcxx_compiler_pic_flag to designate a compile-time flags for 129 # creating position-independent objects. This varies with the target 130 # hardware and operating system, but is often: -DPIC -fPIC. 131 if test "$enable_shared" = yes; then 132 glibcxx_lt_pic_flag="-prefer-pic" 133 glibcxx_compiler_pic_flag="$lt_prog_compiler_pic_CXX" 134 glibcxx_compiler_shared_flag="-D_GLIBCXX_SHARED" 135 136 else 137 glibcxx_lt_pic_flag= 138 glibcxx_compiler_pic_flag= 139 glibcxx_compiler_shared_flag= 140 fi 141 AC_SUBST(glibcxx_lt_pic_flag) 142 AC_SUBST(glibcxx_compiler_pic_flag) 143 AC_SUBST(glibcxx_compiler_shared_flag) 144 145 # Override the libtool's pic_flag and pic_mode. 146 # Do this step after AM_PROG_LIBTOOL, but before AC_OUTPUT. 147 # NB: this impacts --with-pic and --without-pic. 148 lt_prog_compiler_pic_CXX="$glibcxx_compiler_pic_flag $glibcxx_compiler_shared_flag" 149 pic_mode='default' 150 151 # Eliminate -lstdc++ addition to postdeps for cross compiles. 152 postdeps_CXX=`echo " $postdeps_CXX " | sed 's, -lstdc++ ,,g'` 153 154 # Possibly disable most of the library. 155 ## TODO: Consider skipping unncessary tests altogether in this case, rather 156 ## than just ignoring the results. Faster /and/ more correct, win win. 157 GLIBCXX_ENABLE_HOSTED 158 159 # Enable descriptive messages to standard output on termination. 160 GLIBCXX_ENABLE_VERBOSE 161 162 # Enable compiler support that doesn't require linking. 163 GLIBCXX_ENABLE_PCH($is_hosted) 164 GLIBCXX_ENABLE_THREADS 165 GLIBCXX_ENABLE_ATOMIC_BUILTINS 166 GLIBCXX_ENABLE_LOCK_POLICY 167 GLIBCXX_ENABLE_DECIMAL_FLOAT 168 GLIBCXX_ENABLE_FLOAT128 169 if test "$enable_float128" = yes; then 170 port_specific_symbol_files="$port_specific_symbol_files \$(top_srcdir)/config/abi/pre/float128.ver" 171 fi 172 173 # Checks for compiler support that doesn't require linking. 174 GLIBCXX_CHECK_COMPILER_FEATURES 175 176 # Enable all the variable C++ runtime options that don't require linking. 177 GLIBCXX_ENABLE_CSTDIO 178 GLIBCXX_ENABLE_CLOCALE 179 GLIBCXX_ENABLE_ALLOCATOR 180 GLIBCXX_ENABLE_CHEADERS($c_model) dnl c_model from configure.host 181 GLIBCXX_ENABLE_LONG_LONG([yes]) 182 GLIBCXX_ENABLE_WCHAR_T([yes]) 183 GLIBCXX_ENABLE_C99([yes]) 184 GLIBCXX_ENABLE_CONCEPT_CHECKS([no]) 185 GLIBCXX_ENABLE_DEBUG_FLAGS(["-g3 -O0 -D_GLIBCXX_ASSERTIONS"]) 186 GLIBCXX_ENABLE_DEBUG([no]) 187 GLIBCXX_ENABLE_PARALLEL([yes]) 188 GLIBCXX_ENABLE_CXX_FLAGS 189 GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING([no]) 190 GLIBCXX_ENABLE_EXTERN_TEMPLATE([yes]) 191 GLIBCXX_ENABLE_PYTHON 192 GLIBCXX_ENABLE_WERROR([no]) 193 GLIBCXX_ENABLE_VTABLE_VERIFY([no]) 194 195 # Checks for operating systems support that doesn't require linking. 196 GLIBCXX_CHECK_STDIO_PROTO 197 GLIBCXX_CHECK_MATH11_PROTO 198 GLIBCXX_CHECK_UCHAR_H 199 200 # For LFS support. 201 GLIBCXX_CHECK_LFS 202 203 # For showmanyc_helper(). 204 AC_CHECK_HEADERS(sys/ioctl.h sys/filio.h) 205 GLIBCXX_CHECK_POLL 206 GLIBCXX_CHECK_S_ISREG_OR_S_IFREG 207 208 # For xsputn_2(). 209 AC_CHECK_HEADERS(sys/uio.h) 210 GLIBCXX_CHECK_WRITEV 211 212 # Check for fenv.h and complex.h before GLIBCXX_CHECK_C99_TR1 213 # so that the check is done with the C compiler (not C++). 214 # Checking with C++ can break a canadian cross build if either 215 # file does not exist in C but does in C++. 216 AC_CHECK_HEADERS(fenv.h complex.h) 217 218 # For C99 support to TR1. 219 GLIBCXX_CHECK_C99_TR1 220 221 # For the EOF, SEEK_CUR, and SEEK_END integer constants. 222 GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS 223 224 # For gettimeofday support. 225 GLIBCXX_CHECK_GETTIMEOFDAY 226 227 # For clock_gettime, nanosleep and sched_yield support. 228 GLIBCXX_ENABLE_LIBSTDCXX_TIME 229 230 # Check for tmpnam which is obsolescent in POSIX.1-2008 231 GLIBCXX_CHECK_TMPNAM 232 233 # For pthread_cond_clockwait 234 GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT 235 236 # For pthread_mutex_clocklock 237 GLIBCXX_CHECK_PTHREAD_MUTEX_CLOCKLOCK 238 239 # For pthread_rwlock_clockrdlock and pthread_rwlock_clockwrlock 240 GLIBCXX_CHECK_PTHREAD_RWLOCK_CLOCKLOCK 241 242 AC_LC_MESSAGES 243 244 # For hardware_concurrency 245 AC_CHECK_HEADERS(sys/sysinfo.h) 246 GLIBCXX_CHECK_GET_NPROCS 247 AC_CHECK_HEADERS(unistd.h) 248 GLIBCXX_CHECK_SC_NPROCESSORS_ONLN 249 GLIBCXX_CHECK_SC_NPROC_ONLN 250 GLIBCXX_CHECK_PTHREADS_NUM_PROCESSORS_NP 251 GLIBCXX_CHECK_SYSCTL_HW_NCPU 252 GLIBCXX_CHECK_SDT_H 253 254 # Check for available headers. 255 AC_CHECK_HEADERS([endian.h execinfo.h float.h fp.h ieeefp.h inttypes.h \ 256 locale.h machine/endian.h machine/param.h nan.h stdint.h stdlib.h string.h \ 257 strings.h sys/ipc.h sys/isa_defs.h sys/machine.h sys/param.h \ 258 sys/resource.h sys/sem.h sys/stat.h sys/time.h sys/types.h unistd.h \ 259 wchar.h wctype.h linux/types.h]) 260 261 AC_CHECK_HEADERS([linux/random.h], [], [], 262 [[#ifdef HAVE_LINUX_TYPES_H 263 # include <linux/types.h> 264 #endif 265 ]]) 266 267 AC_CHECK_HEADERS([xlocale.h]) 268 269 # Only do link tests if native. Else, hardcode. 270 if $GLIBCXX_IS_NATIVE; then 271 272 # We can do more elaborate tests that assume a working linker. 273 CANADIAN=no 274 275 GLIBCXX_CHECK_LINKER_FEATURES 276 GLIBCXX_CHECK_MATH_SUPPORT 277 GLIBCXX_CHECK_STDLIB_SUPPORT 278 279 # For /dev/random and /dev/urandom for std::random_device. 280 GLIBCXX_CHECK_DEV_RANDOM 281 282 # For TLS support. 283 GCC_CHECK_TLS 284 285 AC_CHECK_FUNCS(__cxa_thread_atexit_impl __cxa_thread_atexit) 286 AC_CHECK_FUNCS(aligned_alloc posix_memalign memalign _aligned_malloc) 287 AC_CHECK_FUNCS(_wfopen) 288 AC_CHECK_FUNCS(secure_getenv) 289 290 # C11 functions for C++17 library 291 AC_CHECK_FUNCS(timespec_get) 292 293 # For Networking TS. 294 AC_CHECK_FUNCS(sockatmark) 295 296 # Non-standard functions used by C++17 std::from_chars 297 AC_CHECK_FUNCS(uselocale) 298 299 # For iconv support. 300 AM_ICONV 301 302 else 303 304 # This lets us hard-code the functionality we know we'll have in the cross 305 # target environment. "Let" is a sugar-coated word placed on an especially 306 # dull and tedious hack, actually. 307 # 308 # Here's why GLIBCXX_CHECK_MATH_SUPPORT, and other autoconf macros 309 # that involve linking, can't be used: 310 # "cannot open sim-crt0.o" 311 # "cannot open crt0.o" 312 # etc. All this is because there currently exists no unified, consistent 313 # way for top level CC information to be passed down to target directories: 314 # newlib includes, newlib linking info, libgloss versus newlib crt0.o, etc. 315 # When all of that is done, all of this hokey, excessive AC_DEFINE junk for 316 # crosses can be removed. 317 318 # If Canadian cross, then don't pick up tools from the build directory. 319 # Used only in GLIBCXX_EXPORT_INCLUDES. 320 if test -n "$with_cross_host" && 321 test x"$build_alias" != x"$with_cross_host" && 322 test x"$build" != x"$target"; 323 then 324 CANADIAN=yes 325 else 326 CANADIAN=no 327 fi 328 329 # Construct crosses by hand, eliminating bits that need ld... 330 # GLIBCXX_CHECK_MATH_SUPPORT 331 332 # First, test for "known" system libraries. We may be using newlib even 333 # on a hosted environment. 334 if test "x${with_newlib}" = "xyes"; then 335 os_include_dir="os/newlib" 336 AC_DEFINE(HAVE_HYPOT) 337 338 # GLIBCXX_CHECK_STDLIB_SUPPORT 339 AC_DEFINE(HAVE_STRTOF) 340 341 AC_DEFINE(HAVE_ACOSF) 342 AC_DEFINE(HAVE_ASINF) 343 AC_DEFINE(HAVE_ATAN2F) 344 AC_DEFINE(HAVE_ATANF) 345 AC_DEFINE(HAVE_CEILF) 346 AC_DEFINE(HAVE_COSF) 347 AC_DEFINE(HAVE_COSHF) 348 AC_DEFINE(HAVE_EXPF) 349 AC_DEFINE(HAVE_FABSF) 350 AC_DEFINE(HAVE_FLOORF) 351 AC_DEFINE(HAVE_FMODF) 352 AC_DEFINE(HAVE_FREXPF) 353 AC_DEFINE(HAVE_LDEXPF) 354 AC_DEFINE(HAVE_LOG10F) 355 AC_DEFINE(HAVE_LOGF) 356 AC_DEFINE(HAVE_MODFF) 357 AC_DEFINE(HAVE_POWF) 358 AC_DEFINE(HAVE_SINF) 359 AC_DEFINE(HAVE_SINHF) 360 AC_DEFINE(HAVE_SQRTF) 361 AC_DEFINE(HAVE_TANF) 362 AC_DEFINE(HAVE_TANHF) 363 364 AC_DEFINE(HAVE_ICONV) 365 AC_DEFINE(HAVE_MEMALIGN) 366 elif test "x$with_headers" != "xno"; then 367 GLIBCXX_CROSSCONFIG 368 fi 369 370 # At some point, we should differentiate between architectures 371 # like x86, which have long double versions, and alpha/powerpc/etc., 372 # which don't. For the time being, punt. 373 if test x"long_double_math_on_this_cpu" = x"yes"; then 374 AC_DEFINE(HAVE_ACOSL) 375 AC_DEFINE(HAVE_ASINL) 376 AC_DEFINE(HAVE_ATAN2L) 377 AC_DEFINE(HAVE_ATANL) 378 AC_DEFINE(HAVE_CEILL) 379 AC_DEFINE(HAVE_COSL) 380 AC_DEFINE(HAVE_COSHL) 381 AC_DEFINE(HAVE_EXPL) 382 AC_DEFINE(HAVE_FABSL) 383 AC_DEFINE(HAVE_FLOORL) 384 AC_DEFINE(HAVE_FMODL) 385 AC_DEFINE(HAVE_FREXPL) 386 AC_DEFINE(HAVE_LDEXPL) 387 AC_DEFINE(HAVE_LOG10L) 388 AC_DEFINE(HAVE_LOGL) 389 AC_DEFINE(HAVE_MODFL) 390 AC_DEFINE(HAVE_POWL) 391 AC_DEFINE(HAVE_SINCOSL) 392 AC_DEFINE(HAVE_SINL) 393 AC_DEFINE(HAVE_SINHL) 394 AC_DEFINE(HAVE_SQRTL) 395 AC_DEFINE(HAVE_TANL) 396 AC_DEFINE(HAVE_TANHL) 397 fi 398 fi 399 400 # Check for _Unwind_GetIPInfo. 401 GCC_CHECK_UNWIND_GETIPINFO 402 403 GCC_LINUX_FUTEX([AC_DEFINE(HAVE_LINUX_FUTEX, 1, [Define if futex syscall is available.])]) 404 405 if test "$is_hosted" = yes; then 406 # TODO: remove this and change src/c++11/compatibility-atomic-c++0x.cc to 407 # use <stdint.h> instead of <gstdint.h>. 408 GCC_HEADER_STDINT(include/gstdint.h) 409 fi 410 411 GLIBCXX_ENABLE_SYMVERS([yes]) 412 AC_SUBST(libtool_VERSION) 413 414 GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY([yes]) 415 416 GLIBCXX_ENABLE_LIBSTDCXX_DUAL_ABI([yes]) 417 GLIBCXX_DEFAULT_ABI 418 419 ac_ldbl_compat=no 420 ac_ldbl_alt128_compat=no 421 ac_ldbl_ieee128_default=no 422 LONG_DOUBLE_COMPAT_FLAGS="-mlong-double-64" 423 LONG_DOUBLE_128_FLAGS= 424 LONG_DOUBLE_ALT128_COMPAT_FLAGS= 425 case "$target" in 426 powerpc*-*-linux* | \ 427 sparc*-*-linux* | \ 428 s390*-*-linux* | \ 429 alpha*-*-linux*) 430 AC_TRY_COMPILE(, [ 431 #if !defined __LONG_DOUBLE_128__ || (defined(__sparc__) && defined(__arch64__)) 432 #error no need for long double compatibility 433 #endif 434 ], [ac_ldbl_compat=yes], [ac_ldbl_compat=no]) 435 if test "$ac_ldbl_compat" = yes; then 436 AC_DEFINE([_GLIBCXX_LONG_DOUBLE_COMPAT],1, 437 [Define if compatibility should be provided for -mlong-double-64.]) 438 port_specific_symbol_files="\$(top_srcdir)/config/os/gnu-linux/ldbl-extra.ver" 439 case "$target" in 440 powerpc*-*-linux*) 441 LONG_DOUBLE_COMPAT_FLAGS="$LONG_DOUBLE_COMPAT_FLAGS -mno-gnu-attribute" 442 # Check for IEEE128 support in libm: 443 AC_CHECK_LIB(m, __frexpieee128, 444 [ac_ldbl_ieee128_in_libc=yes], 445 [ac_ldbl_ieee128_in_libc=no]) 446 if test $ac_ldbl_ieee128_in_libc = yes; then 447 # Determine which long double format is the compiler's default: 448 AC_TRY_COMPILE(, [ 449 #ifndef __LONG_DOUBLE_IEEE128__ 450 #error compiler defaults to ibm128 451 #endif 452 ], [ac_ldbl_ieee128_default=yes], [ac_ldbl_ieee128_default=no]) 453 # Library objects should use default long double format. 454 if test "$ac_ldbl_ieee128_default" = yes; then 455 LONG_DOUBLE_128_FLAGS="-mno-gnu-attribute" 456 # Except for the ones that explicitly use these flags: 457 LONG_DOUBLE_ALT128_COMPAT_FLAGS="-mabi=ibmlongdouble -mno-gnu-attribute -Wno-psabi" 458 else 459 LONG_DOUBLE_128_FLAGS="-mno-gnu-attribute" 460 LONG_DOUBLE_ALT128_COMPAT_FLAGS="-mabi=ieeelongdouble -mno-gnu-attribute -Wno-psabi" 461 fi 462 AC_DEFINE([_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT],1, 463 [Define if compatibility should be provided for alternative 128-bit long double formats.]) 464 port_specific_symbol_files="$port_specific_symbol_files \$(top_srcdir)/config/os/gnu-linux/ldbl-ieee128-extra.ver" 465 ac_ldbl_alt128_compat=yes 466 else 467 ac_ldbl_alt128_compat=no 468 fi 469 ;; 470 esac 471 fi 472 esac 473 AC_SUBST(LONG_DOUBLE_COMPAT_FLAGS) 474 AC_SUBST(LONG_DOUBLE_128_FLAGS) 475 AC_SUBST(LONG_DOUBLE_ALT128_COMPAT_FLAGS) 476 GLIBCXX_CONDITIONAL(GLIBCXX_LDBL_COMPAT, test $ac_ldbl_compat = yes) 477 GLIBCXX_CONDITIONAL(GLIBCXX_LDBL_ALT128_COMPAT, test $ac_ldbl_alt128_compat = yes) 478 479 # Check if assembler supports disabling hardware capability support. 480 GCC_CHECK_ASSEMBLER_HWCAP 481 482 # Check if assembler supports rdrand opcode. 483 GLIBCXX_CHECK_X86_RDRAND 484 # Check if assembler supports rdseed opcode. 485 GLIBCXX_CHECK_X86_RDSEED 486 487 # Check for other random number APIs 488 GLIBCXX_CHECK_GETENTROPY 489 GLIBCXX_CHECK_ARC4RANDOM 490 491 # This depends on GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE. 492 GLIBCXX_CONFIGURE_TESTSUITE 493 494 # For gthread support. Depends on GLIBCXX_ENABLE_SYMVERS. 495 GLIBCXX_CHECK_GTHREADS 496 497 # For Filesystem TS. 498 AC_CHECK_HEADERS([fcntl.h dirent.h sys/statvfs.h utime.h]) 499 GLIBCXX_ENABLE_FILESYSTEM_TS 500 GLIBCXX_CHECK_FILESYSTEM_DEPS 501 502 GLIBCXX_ENABLE_BACKTRACE 503 504 # For Networking TS. 505 AC_CHECK_HEADERS([fcntl.h sys/ioctl.h sys/socket.h sys/uio.h poll.h netdb.h arpa/inet.h netinet/in.h netinet/tcp.h]) 506 AC_CHECK_DECL(F_GETFL,,,[#include <fcntl.h>]) 507 AC_CHECK_DECL(F_SETFL,,,[#include <fcntl.h>]) 508 if test "$ac_cv_have_decl_F_GETFL$ac_cv_have_decl_F_SETFL" = yesyes ; then 509 AC_CHECK_DECL(O_NONBLOCK, 510 AC_DEFINE(HAVE_O_NONBLOCK,1,[Define if O_NONBLOCK is defined in <fcntl.h>]), 511 [], 512 [#include <fcntl.h>]) 513 fi 514 515 # For Transactional Memory TS 516 GLIBCXX_CHECK_SIZE_T_MANGLING 517 518 # Check which release added std::exception_ptr for the target 519 GLIBCXX_CHECK_EXCEPTION_PTR_SYMVER 520 521 # Define documentation rules conditionally. 522 523 # See if makeinfo has been installed and is modern enough 524 # that we can use it. 525 ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version], 526 [GNU texinfo.* \([0-9][0-9.]*\)], 527 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*]) 528 AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes") 529 530 # Check for doxygen 531 AC_CHECK_PROG([DOXYGEN], doxygen, yes, no) 532 AC_CHECK_PROG([DOT], dot, yes, no) 533 534 # Check for docbook 535 AC_CHECK_PROG([XMLCATALOG], xmlcatalog, yes, no) 536 AC_CHECK_PROG([XSLTPROC], xsltproc, yes, no) 537 AC_CHECK_PROG([XMLLINT], xmllint, yes, no) 538 GLIBCXX_CONFIGURE_DOCBOOK 539 540 # Check for xml/html dependencies. 541 AM_CONDITIONAL(BUILD_XML, 542 test $ac_cv_prog_DOXYGEN = "yes" && 543 test $ac_cv_prog_DOT = "yes" && 544 test $ac_cv_prog_XSLTPROC = "yes" && 545 test $ac_cv_prog_XMLLINT = "yes" && 546 test $glibcxx_stylesheets = "yes") 547 548 AM_CONDITIONAL(BUILD_HTML, 549 test $ac_cv_prog_DOXYGEN = "yes" && 550 test $ac_cv_prog_DOT = "yes" && 551 test $ac_cv_prog_XSLTPROC = "yes" && 552 test $ac_cv_prog_XMLLINT = "yes" && 553 test $glibcxx_stylesheets = "yes") 554 555 # Check for man dependencies. 556 AM_CONDITIONAL(BUILD_MAN, 557 test $ac_cv_prog_DOXYGEN = "yes" && 558 test $ac_cv_prog_DOT = "yes") 559 560 # Check for pdf dependencies. 561 AC_CHECK_PROG([DBLATEX], dblatex, yes, no) 562 AC_CHECK_PROG([PDFLATEX], pdflatex, yes, no) 563 AM_CONDITIONAL(BUILD_PDF, 564 test $ac_cv_prog_DOXYGEN = "yes" && 565 test $ac_cv_prog_DOT = "yes" && 566 test $ac_cv_prog_XSLTPROC = "yes" && 567 test $ac_cv_prog_XMLLINT = "yes" && 568 test $ac_cv_prog_DBLATEX = "yes" && 569 test $ac_cv_prog_PDFLATEX = "yes") 570 571 case "$build" in 572 *-*-darwin* ) glibcxx_include_dir_notparallel=yes ;; 573 * ) glibcxx_include_dir_notparallel=no ;; 574 esac 575 AM_CONDITIONAL(INCLUDE_DIR_NOTPARALLEL, 576 test $glibcxx_include_dir_notparallel = "yes") 577 578 # Propagate the target-specific source directories through the build chain. 579 ATOMICITY_SRCDIR=config/${atomicity_dir} 580 ATOMIC_WORD_SRCDIR=config/${atomic_word_dir} 581 ATOMIC_FLAGS=${atomic_flags} 582 CPU_DEFINES_SRCDIR=config/${cpu_defines_dir} 583 OS_INC_SRCDIR=config/${os_include_dir} 584 ERROR_CONSTANTS_SRCDIR=config/${error_constants_dir} 585 ABI_TWEAKS_SRCDIR=config/${abi_tweaks_dir} 586 CPU_OPT_EXT_RANDOM=config/${cpu_opt_ext_random} 587 CPU_OPT_BITS_RANDOM=config/${cpu_opt_bits_random} 588 AC_SUBST(ATOMICITY_SRCDIR) 589 AC_SUBST(ATOMIC_WORD_SRCDIR) 590 AC_SUBST(ATOMIC_FLAGS) 591 AC_SUBST(CPU_DEFINES_SRCDIR) 592 AC_SUBST(ABI_TWEAKS_SRCDIR) 593 AC_SUBST(OS_INC_SRCDIR) 594 AC_SUBST(ERROR_CONSTANTS_SRCDIR) 595 AC_SUBST(CPU_OPT_EXT_RANDOM) 596 AC_SUBST(CPU_OPT_BITS_RANDOM) 597 598 # Conditionalize the makefile for this target machine. 599 tmake_file_= 600 for f in ${tmake_file} 601 do 602 if test -f ${srcdir}/config/$f 603 then 604 tmake_file_="${tmake_file_} \$(srcdir)/config/$f" 605 fi 606 done 607 tmake_file="${tmake_file_}" 608 AC_SUBST(tmake_file) 609 610 # Add CET specific flags if Intel CET is enabled. 611 GCC_CET_FLAGS(CET_FLAGS) 612 EXTRA_CXX_FLAGS="$EXTRA_CXX_FLAGS $CET_FLAGS" 613 EXTRA_CFLAGS="$EXTRA_CFLAGS $CET_FLAGS" 614 AC_SUBST(EXTRA_CFLAGS) 615 AC_SUBST(EXTRA_CXX_FLAGS) 616 617 # Determine cross-compile flags and AM_CONDITIONALs. 618 #AC_SUBST(GLIBCXX_IS_NATIVE) 619 #AM_CONDITIONAL(CANADIAN, test $CANADIAN = yes) 620 GLIBCXX_EVALUATE_CONDITIONALS 621 622 AC_CACHE_SAVE 623 624 if test ${multilib} = yes; then 625 multilib_arg="--enable-multilib" 626 else 627 multilib_arg= 628 fi 629 630 # Export all the install information. 631 GLIBCXX_EXPORT_INSTALL_INFO 632 633 # Export all the include and flag information to Makefiles. 634 GLIBCXX_EXPORT_INCLUDES 635 GLIBCXX_EXPORT_FLAGS 636 637 # Determine what GCC version number to use in filesystem paths. 638 GCC_BASE_VER 639 640 dnl In autoconf 2.5x, AC_OUTPUT is replaced by four AC_CONFIG_* macros, 641 dnl which can all be called multiple times as needed, plus one (different) 642 dnl AC_OUTPUT macro. This one lists the files to be created: 643 AC_CONFIG_FILES(Makefile) 644 AC_CONFIG_FILES([scripts/testsuite_flags],[chmod +x scripts/testsuite_flags]) 645 AC_CONFIG_FILES([scripts/extract_symvers],[chmod +x scripts/extract_symvers]) 646 AC_CONFIG_FILES([doc/xsl/customization.xsl]) 647 AC_CONFIG_FILES([src/libbacktrace/backtrace-supported.h]) 648 649 # Multilibs need MULTISUBDIR defined correctly in certain makefiles so 650 # that multilib installs will end up installed in the correct place. 651 # The testsuite needs it for multilib-aware ABI baseline files. 652 # To work around this not being passed down from config-ml.in -> 653 # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually 654 # append it here. Only modify Makefiles that have just been created. 655 # 656 # Also, get rid of this simulated-VPATH thing that automake does. 657 AC_CONFIG_FILES(AC_FOREACH([DIR], glibcxx_SUBDIRS, [DIR/Makefile ]), 658 [cat > vpsed$$ << \_EOF 659 s!`test -f '$<' || echo '$(srcdir)/'`!! 660 _EOF 661 sed -f vpsed$$ $ac_file > tmp$$ 662 mv tmp$$ $ac_file 663 rm vpsed$$ 664 echo 'MULTISUBDIR =' >> $ac_file 665 ml_norecursion=yes 666 . ${multi_basedir}/config-ml.in 667 AS_UNSET([ml_norecursion]) 668 ]) 669 670 AC_CONFIG_COMMANDS([generate-headers], 671 [(cd include && ${MAKE-make} pch_build= )]) 672 673 dnl And this actually makes things happen: 674 AC_OUTPUT 675
Indexes created Tue Jun 02 00:25:15 UTC 2026