libstdc++-v3/configure.in

   1 # Process this file with autoconf to produce a configure script, like so:
   2 # aclocal && autoconf && autoheader && automake
   3
   4 AC_PREREQ(2.13)
   5 AC_INIT(src/ios.cc)
   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 ORIGINAL_LD_FOR_MULTILIBS=$LD
  12
  13 PACKAGE=libstdc++
  14 AC_SUBST(PACKAGE)
  15 # For libtool versioning info, format is CURRENT:REVISION:AGE
  16 libtool_VERSION=6:0:0
  17 AC_SUBST(libtool_VERSION)
  18
  19 GLIBCPP_TOPREL_CONFIGURE
  20
  21 # Gets build, host, target, *_vendor, *_cpu, *_os, etc.
  22 #
  23 # You will slowly go insane if you do not grok the following fact:  when
  24 # building v3 as part of the compiler, the top-level /target/ becomes the
  25 # library's /host/.  `configure' then causes --target to default to --host,
  26 # exactly like any other package using autoconf.  Therefore, 'target' and
  27 # 'host' will always be the same.  This makes sense both for native and
  28 # cross compilers, just think about it for a little while.  :-)
  29 #
  30 # Also, if v3 is being configured as part of a cross compiler, the top-level
  31 # configure script will pass the "real" host as $with_cross_host.
  32 #
  33 # In AC 2.13 AC_CANONICAL_TARGET was known as AC_CANONICAL_SYSTEM.
  34 AC_CANONICAL_SYSTEM
  35
  36 # Runs configure.host, finds CC, CXX and assorted other critical bits.
  37 # Must run this before the GLIBCPP_ENABLE_* macros below.
  38 GLIBCPP_CONFIGURE(.)
  39
  40 AM_INIT_AUTOMAKE($PACKAGE, $gcc_version)
  41 AM_CONFIG_HEADER(config.h)
  42
  43 AC_LIBTOOL_DLOPEN
  44 AM_PROG_LIBTOOL
  45 AC_SUBST(enable_shared)
  46 AC_SUBST(enable_static)
  47
  48 # Check for c++ or library specific bits that don't require linking.
  49 GLIBCPP_CHECK_GNU_MAKE
  50 #GLIBCPP_CHECK_COMPILER_VERSION
  51 GLIBCPP_CHECK_PCH
  52
  53 # Enable all the variable C++ stuff.  C_MBCHAR must come early.
  54 GLIBCPP_ENABLE_CSTDIO
  55 GLIBCPP_ENABLE_CLOCALE
  56 GLIBCPP_ENABLE_CHEADERS([$c_model])
  57 GLIBCPP_ENABLE_C_MBCHAR([yes])
  58 GLIBCPP_ENABLE_C99([yes])
  59 GLIBCPP_ENABLE_LONG_LONG([yes])
  60 GLIBCPP_ENABLE_THREADS
  61 GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
  62 GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS
  63 GLIBCPP_ENABLE_CONCEPT_CHECKS
  64 GLIBCPP_ENABLE_CXX_FLAGS
  65 GLIBCPP_ENABLE_DEBUG([no])
  66 GLIBCPP_ENABLE_DEBUG_FLAGS([none])
  67
  68 # No surprises, no surprises...
  69 if test $ATOMICITYH = cpu/generic ; then
  70   AC_MSG_WARN([No native atomic operations are provided for this platform.])
  71   if test $target_thread_file = single; then
  72     AC_MSG_WARN([They cannot be faked when thread support is disabled.])
  73     AC_MSG_WARN([Thread-safety of certain classes is not guaranteed.])
  74   else
  75     AC_MSG_WARN([They will be faked using a mutex.])
  76     AC_MSG_WARN([Performance of certain classes will degrade as a result.])
  77   fi
  78 fi
  79
  80
  81 if test x"$build" != x"$host"; then
  82
  83   # We are being configured with some form of cross compiler.
  84   GLIBCPP_IS_CROSS_COMPILING=true
  85
  86   # This lets us hard-code the functionality we know we'll have in the cross
  87   # target environment.  "Let" is a sugar-coated word placed on an especially
  88   # dull and tedious hack, actually.
  89   #
  90   # Here's why GLIBCPP_CHECK_MATH_SUPPORT, and other autoconf macros
  91   # that involve linking, can't be used:
  92   #    "cannot open sim-crt0.o"
  93   #    "cannot open crt0.o"
  94   # etc.  All this is because there currently exists no unified, consistent
  95   # way for top level CC information to be passed down to target directories:
  96   # newlib includes, newlib linking info, libgloss versus newlib crt0.o, etc.
  97   # When all of that is done, all of this hokey, excessive AC_DEFINE junk for
  98   # crosses can be removed.
  99
 100   # If Canadian cross, then don't pick up tools from the build directory.
 101   # Used in GLIBCPP_EXPORT_INCLUDES (and nowhere else?).
 102   if test -n "$with_cross_host" && test x"$build" != x"$with_cross_host" \
 103     && test x"$build" != x"$target"; then
 104     CANADIAN=yes
 105   else
 106     CANADIAN=no
 107   fi
 108
 109   # Construct crosses by hand, eliminating bits that need ld...
 110   # GLIBCPP_CHECK_COMPILER_FEATURES
 111   # GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
 112   # GLIBCPP_CHECK_MATH_SUPPORT
 113
 114   case "${host}" in
 115     *-freebsd*)
 116       os_include_dir="os/bsd/freebsd"
 117       AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
 118         machine/endian.h machine/param.h sys/machine.h sys/types.h \
 119         fp.h locale.h float.h inttypes.h sys/resource.h sys/stat.h \
 120         sys/time.h unistd.h])
 121       SECTION_FLAGS='-ffunction-sections -fdata-sections'
 122       AC_SUBST(SECTION_FLAGS)
 123       GLIBCPP_CHECK_LINKER_FEATURES
 124       GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
 125       GLIBCPP_CHECK_WCHAR_T_SUPPORT
 126       AC_DEFINE(HAVE_LC_MESSAGES)
 127       AC_DEFINE(HAVE_DRAND48)
 128       AC_DEFINE(HAVE_GETPAGESIZE)
 129       AC_DEFINE(HAVE_SETENV)
 130       AC_DEFINE(HAVE_SIGSETJMP)
 131       AC_DEFINE(HAVE_COPYSIGN)
 132       AC_DEFINE(HAVE_COPYSIGNF)
 133       AC_DEFINE(HAVE_FINITEF)
 134       AC_DEFINE(HAVE_FINITE)
 135       AC_DEFINE(HAVE_FREXPF)
 136       AC_DEFINE(HAVE_HYPOT)
 137       AC_DEFINE(HAVE_HYPOTF)
 138       AC_DEFINE(HAVE_ISINF)
 139       AC_DEFINE(HAVE_ISNAN)
 140       AC_DEFINE(HAVE_ISNANF)
 141
 142       AC_DEFINE(HAVE_MMAP)
 143       AC_DEFINE(HAVE_ACOSF)
 144       AC_DEFINE(HAVE_ASINF)
 145       AC_DEFINE(HAVE_ATAN2F)
 146       AC_DEFINE(HAVE_ATANF)
 147       AC_DEFINE(HAVE_CEILF)
 148       AC_DEFINE(HAVE_COPYSIGN)
 149       AC_DEFINE(HAVE_COPYSIGNF)
 150       AC_DEFINE(HAVE_COSF)
 151       AC_DEFINE(HAVE_COSHF)
 152       AC_DEFINE(HAVE_EXPF)
 153       AC_DEFINE(HAVE_FABSF)
 154       AC_DEFINE(HAVE_FLOORF)
 155       AC_DEFINE(HAVE_FMODF)
 156       AC_DEFINE(HAVE_FREXPF)
 157       AC_DEFINE(HAVE_LDEXPF)
 158       AC_DEFINE(HAVE_LOG10F)
 159       AC_DEFINE(HAVE_LOGF)
 160       AC_DEFINE(HAVE_MODFF)
 161       AC_DEFINE(HAVE_POWF)
 162       AC_DEFINE(HAVE_SINF)
 163       AC_DEFINE(HAVE_SINHF)
 164       AC_DEFINE(HAVE_SQRTF)
 165       AC_DEFINE(HAVE_TANF)
 166       AC_DEFINE(HAVE_TANHF)
 167       if test x"long_double_math_on_this_cpu" = x"yes"; then
 168         AC_DEFINE(HAVE_FINITEL)
 169         AC_DEFINE(HAVE_ISINFL)
 170         AC_DEFINE(HAVE_ISNANL)
 171       fi
 172       ;;
 173     *-hpux*)
 174       os_include_dir="os/hpux"
 175       AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
 176         machine/endian.h machine/param.h sys/machine.h sys/types.h \
 177         fp.h locale.h float.h inttypes.h])
 178       SECTION_FLAGS='-ffunction-sections -fdata-sections'
 179       AC_SUBST(SECTION_FLAGS)
 180       GLIBCPP_CHECK_LINKER_FEATURES
 181       GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
 182       GLIBCPP_CHECK_WCHAR_T_SUPPORT
 183       AC_DEFINE(HAVE_COPYSIGN)
 184       AC_DEFINE(HAVE_COPYSIGNF)
 185       AC_DEFINE(HAVE_FREXPF)
 186       AC_DEFINE(HAVE_HYPOT)
 187       case "$target" in
 188         *-hpux10*)
 189           AC_DEFINE(HAVE_FINITE)
 190           AC_DEFINE(HAVE_FINITEF)
 191           AC_DEFINE(HAVE_ISINF)
 192           AC_DEFINE(HAVE_ISINFF)
 193           AC_DEFINE(HAVE_ISNAN)
 194           AC_DEFINE(HAVE_ISNANF)
 195           ;;
 196       esac
 197       ;;
 198     *-linux*)
 199       os_include_dir="os/gnu-linux"
 200       AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
 201         machine/endian.h machine/param.h sys/machine.h sys/types.h \
 202         fp.h locale.h float.h inttypes.h])
 203       SECTION_FLAGS='-ffunction-sections -fdata-sections'
 204       AC_SUBST(SECTION_FLAGS)
 205       GLIBCPP_CHECK_LINKER_FEATURES
 206       GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
 207       GLIBCPP_CHECK_WCHAR_T_SUPPORT
 208       AC_DEFINE(HAVE_COPYSIGN)
 209       AC_DEFINE(HAVE_COPYSIGNF)
 210       AC_DEFINE(HAVE_FINITE)
 211       AC_DEFINE(HAVE_FINITEF)
 212       AC_DEFINE(HAVE_FREXPF)
 213       AC_DEFINE(HAVE_HYPOTF)
 214       AC_DEFINE(HAVE_ISINF)
 215       AC_DEFINE(HAVE_ISINFF)
 216       AC_DEFINE(HAVE_ISNAN)
 217       AC_DEFINE(HAVE_ISNANF)
 218       AC_DEFINE(HAVE_SINCOS)
 219       AC_DEFINE(HAVE_SINCOSF)
 220       if test x"long_double_math_on_this_cpu" = x"yes"; then
 221         AC_DEFINE(HAVE_FINITEL)
 222         AC_DEFINE(HAVE_HYPOTL)
 223         AC_DEFINE(HAVE_ISINFL)
 224         AC_DEFINE(HAVE_ISNANL)
 225       fi
 226       ;;
 227     *-mingw32*)
 228       os_include_dir="os/mingw32"
 229       AC_CHECK_HEADERS([sys/types.h locale.h float.h])
 230       GLIBCPP_CHECK_LINKER_FEATURES
 231       GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
 232       GLIBCPP_CHECK_WCHAR_T_SUPPORT
 233       ;;
 234     *-netbsd*)
 235       os_include_dir="os/bsd/netbsd"
 236       AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
 237         machine/endian.h machine/param.h sys/machine.h sys/types.h \
 238         fp.h locale.h float.h inttypes.h])
 239       SECTION_FLAGS='-ffunction-sections -fdata-sections'
 240       AC_SUBST(SECTION_FLAGS)
 241       GLIBCPP_CHECK_LINKER_FEATURES
 242       GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
 243       GLIBCPP_CHECK_WCHAR_T_SUPPORT
 244       AC_DEFINE(HAVE_COPYSIGN)
 245       AC_DEFINE(HAVE_COPYSIGNF)
 246       AC_DEFINE(HAVE_FINITEF)
 247       AC_DEFINE(HAVE_FINITE)
 248       AC_DEFINE(HAVE_FREXPF)
 249       AC_DEFINE(HAVE_HYPOTF)
 250       AC_DEFINE(HAVE_ISINF)
 251       AC_DEFINE(HAVE_ISINFF)
 252       AC_DEFINE(HAVE_ISNAN)
 253       AC_DEFINE(HAVE_ISNANF)
 254       if test x"long_double_math_on_this_cpu" = x"yes"; then
 255         AC_DEFINE(HAVE_FINITEL)
 256         AC_DEFINE(HAVE_ISINFL)
 257         AC_DEFINE(HAVE_ISNANL)
 258       fi
 259       ;;
 260     *-qnx6.1* | *-qnx6.2*)
 261       os_include_dir="os/qnx/qnx6.1"
 262       SECTION_FLAGS='-ffunction-sections -fdata-sections'
 263       AC_SUBST(SECTION_FLAGS)
 264       GLIBCPP_CHECK_LINKER_FEATURES
 265       GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
 266       GLIBCPP_CHECK_WCHAR_T_SUPPORT
 267       AC_DEFINE(HAVE_COSF)
 268       AC_DEFINE(HAVE_COSL)
 269       AC_DEFINE(HAVE_COSHF)
 270       AC_DEFINE(HAVE_COSHL)
 271       AC_DEFINE(HAVE_LOGF)
 272       AC_DEFINE(HAVE_LOGL)
 273       AC_DEFINE(HAVE_LOG10F)
 274       AC_DEFINE(HAVE_LOG10L)
 275       AC_DEFINE(HAVE_SINF)
 276       AC_DEFINE(HAVE_SINL)
 277       AC_DEFINE(HAVE_SINHF)
 278       AC_DEFINE(HAVE_SINHL)
 279       ;;
 280     *-solaris*)
 281       case "$target" in
 282         *-solaris2.5)
 283           os_include_dir="os/solaris/solaris2.5"
 284           ;;
 285         *-solaris2.6)
 286           os_include_dir="os/solaris/solaris2.6"
 287           ;;
 288         *-solaris2.7 | *-solaris2.8 | *-solaris2.9)
 289           os_include_dir="os/solaris/solaris2.7"
 290           ;;
 291       esac
 292       AC_DEFINE(HAVE_STRTOF)
 293       AC_DEFINE(HAVE_STRTOLD)
 294       AC_DEFINE(HAVE_MMAP)
 295       AC_DEFINE(HAVE_COPYSIGN)
 296       AC_DEFINE(HAVE_ISNAN)
 297       AC_DEFINE(HAVE_ISNANF)
 298       AC_DEFINE(HAVE_MODFF)
 299       AC_DEFINE(HAVE_HYPOT)
 300       ;;
 301     *-windiss*)
 302       os_include_dir="os/windiss"
 303       AC_DEFINE(HAVE_ACOSF)
 304       AC_DEFINE(HAVE_ASINF)
 305       AC_DEFINE(HAVE_ATAN2F)
 306       AC_DEFINE(HAVE_ATANF)
 307       AC_DEFINE(HAVE_CEILF)
 308       AC_DEFINE(HAVE_COPYSIGN)
 309       AC_DEFINE(HAVE_COPYSIGNF)
 310       AC_DEFINE(HAVE_COSF)
 311       AC_DEFINE(HAVE_COSHF)
 312       AC_DEFINE(HAVE_EXPF)
 313       AC_DEFINE(HAVE_FABSF)
 314       AC_DEFINE(HAVE_FLOORF)
 315       AC_DEFINE(HAVE_FMODF)
 316       AC_DEFINE(HAVE_FREXPF)
 317       AC_DEFINE(HAVE_LDEXPF)
 318       AC_DEFINE(HAVE_LOG10F)
 319       AC_DEFINE(HAVE_LOGF)
 320       AC_DEFINE(HAVE_MODFF)
 321       AC_DEFINE(HAVE_POWF)
 322       AC_DEFINE(HAVE_SINF)
 323       AC_DEFINE(HAVE_SINHF)
 324       AC_DEFINE(HAVE_SQRTF)
 325       AC_DEFINE(HAVE_TANF)
 326       AC_DEFINE(HAVE_TANHF)
 327       ;;
 328     *)
 329       if test "x${with_newlib}" = "xyes"; then
 330         os_include_dir="os/newlib"
 331         AC_DEFINE(HAVE_HYPOT)
 332
 333         # GLIBCPP_CHECK_STDLIB_SUPPORT
 334         AC_DEFINE(HAVE_STRTOF)
 335         AC_DEFINE(HAVE_STRTOLD)
 336         # AC_FUNC_MMAP
 337         AC_DEFINE(HAVE_MMAP)
 338
 339         AC_DEFINE(HAVE_ACOSF)
 340         AC_DEFINE(HAVE_ASINF)
 341         AC_DEFINE(HAVE_ATAN2F)
 342         AC_DEFINE(HAVE_ATANF)
 343         AC_DEFINE(HAVE_CEILF)
 344         AC_DEFINE(HAVE_COPYSIGN)
 345         AC_DEFINE(HAVE_COPYSIGNF)
 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       else
 364         AC_MSG_ERROR([No support for this host/target combination.])
 365       fi
 366      ;;
 367   esac
 368
 369   # At some point, we should differentiate between architectures
 370   # like x86, which have long double versions, and alpha/powerpc/etc.,
 371   # which don't. For the time being, punt.
 372   if test x"long_double_math_on_this_cpu" = x"yes"; then
 373     AC_DEFINE(HAVE_ACOSL)
 374     AC_DEFINE(HAVE_ASINL)
 375     AC_DEFINE(HAVE_ATAN2L)
 376     AC_DEFINE(HAVE_ATANL)
 377     AC_DEFINE(HAVE_CEILL)
 378     AC_DEFINE(HAVE_COPYSIGNL)
 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
 399 else
 400
 401   # We are being configured natively. We can do more elaborate tests
 402   # that include AC_TRY_COMPILE now, as the linker is assumed to be
 403   # working.
 404   GLIBCPP_IS_CROSS_COMPILING=false
 405   CANADIAN=no
 406
 407   # Check for available headers.
 408   AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
 409   machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h \
 410   sys/types.h])
 411
 412   GLIBCPP_CHECK_COMPILER_FEATURES
 413   GLIBCPP_CHECK_LINKER_FEATURES
 414   GLIBCPP_CHECK_MATH_SUPPORT
 415   GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
 416   GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
 417   GLIBCPP_CHECK_WCHAR_T_SUPPORT
 418   GLIBCPP_CHECK_STDLIB_SUPPORT
 419
 420   # For showmanyc_helper().
 421   AC_CHECK_HEADERS(sys/ioctl.h sys/filio.h)
 422   GLIBCPP_CHECK_POLL
 423   GLIBCPP_CHECK_S_ISREG_OR_S_IFREG
 424
 425   AC_LC_MESSAGES
 426
 427   AC_TRY_COMPILE([
 428   #include <setjmp.h>
 429   ], [sigjmp_buf env; while (! sigsetjmp (env, 1)) siglongjmp (env, 1);],
 430   [AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available.  ])
 431   ])
 432
 433   AC_FUNC_MMAP
 434 fi
 435
 436 # This depends on GLIBCPP_CHECK_LINKER_FEATURES, but without it assumes no.
 437 GLIBCPP_ENABLE_SYMVERS([yes])
 438
 439 # This depends on GLIBCPP_ENABLE_SYMVERS and GLIBCPP_IS_CROSS_COMPILING.
 440 GLIBCPP_CONFIGURE_TESTSUITE
 441
 442 # Propagate the target-specific source directories through the build chain.
 443 # (Nothing currently uses cpu_include_dir directly; only ATOMICITYH
 444 # uses it, and it only gets used in this file.)
 445 OS_INC_SRCDIR=config/${os_include_dir}
 446 ATOMICITY_INC_SRCDIR=config/${ATOMICITYH}
 447 AC_SUBST(OS_INC_SRCDIR)
 448 AC_SUBST(ATOMICITY_INC_SRCDIR)
 449
 450 # Determine cross-compile flags and all AM_CONDITIONALs.
 451 AC_SUBST(GLIBCPP_IS_CROSS_COMPILING)
 452 AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes)
 453 dnl from GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT:
 454 AM_CONDITIONAL(GLIBCPP_BUILD_LIBMATH,  test "$need_libmath" = yes)
 455
 456 AC_CACHE_SAVE
 457
 458 if test "${multilib}" = "yes"; then
 459   multilib_arg="--enable-multilib"
 460 else
 461   multilib_arg=
 462 fi
 463
 464 # Export all the install information
 465 GLIBCPP_EXPORT_INSTALL_INFO
 466
 467 # Export all the include and flag information to Makefiles.
 468 GLIBCPP_EXPORT_INCLUDES
 469 GLIBCPP_EXPORT_FLAGS
 470
 471 if ${CONFIG_SHELL-/bin/sh} ./libtool --tag CXX --features |
 472    grep "enable shared" > /dev/null; then
 473   LIBSUPCXX_PICFLAGS=-prefer-pic
 474 else
 475   LIBSUPCXX_PICFLAGS=
 476 fi
 477 AC_SUBST(LIBSUPCXX_PICFLAGS)
 478
 479 # Generate the various Makefiles, include files, and scripts.
 480 # NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am,
 481 # libsupc++/Makefile.am and testsuite/Makefile.am so that multilib installs
 482 # will end up installed in the correct place. To work around this not being
 483 # passed # down from config-ml.in -> top_srcdir/Makefile.am ->
 484 # top_srcdir/{src,libsupc++}/Makefile.am, manually append it here.
 485 AC_OUTPUT(Makefile \
 486 include/Makefile src/Makefile \
 487 libmath/Makefile libsupc++/Makefile \
 488 po/Makefile testsuite/Makefile scripts/check_survey scripts/testsuite_flags,
 489 [test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
 490  if test -n "$CONFIG_FILES"; then
 491    if test -n "${with_build_subdir}" || test -n "${with_target_subdir}"; then
 492      LD="${ORIGINAL_LD_FOR_MULTILIBS}"
 493      # Ony modify Makefiles that are just being created.
 494      case " $CONFIG_FILES" in
 495        *" Makefile"*)
 496          ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
 497          ;;
 498      esac
 499      case $CONFIG_FILES in
 500        *src/Makefile*)
 501          grep '^MULTISUBDIR =' Makefile >> src/Makefile
 502          ;;
 503      esac
 504      case $CONFIG_FILES in
 505        *libsupc++/Makefile*)
 506          grep '^MULTISUBDIR =' Makefile >> libsupc++/Makefile
 507          ;;
 508      esac
 509      case $CONFIG_FILES in
 510        *testsuite/Makefile*)
 511          grep '^MULTISUBDIR =' Makefile >> testsuite/Makefile
 512          ;;
 513      esac
 514    fi
 515  fi
 516  chmod +x scripts/check_survey
 517  chmod +x scripts/testsuite_flags],
 518 srcdir=${srcdir}
 519 host=${host}
 520 target=${target}
 521 with_target_subdir=${with_target_subdir}
 522 with_build_subdir=${with_build_subdir}
 523 with_multisubdir=${with_multisubdir}
 524 ac_configure_args="${multilib_arg} ${ac_configure_args}"
 525 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
 526 glibcpp_basedir=${glibcpp_basedir}
 527 CC="${CC}"
 528 CXX="${CXX}"
 529 ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"
 530 )
 531 dnl  In autoconf 2.5x, AC_OUTPUT is replaced by three AC_ macros:
 532 dnl  AC_CONFIG_FILES(Makefile \
 533 dnl      include/Makefile src/Makefile \
 534 dnl      libmath/Makefile libsupc++/Makefile \
 535 dnl      po/Makefile testsuite/Makefile \
 536 dnl      scripts/check_survey scripts/testsuite_flags)
 537 dnl  AC_CONFIG_COMMANDS([default],
 538 dnl  [if test -n "$CONFIG_FILES"; then
 539 dnl    # Ony modify Makefiles that are just being created.
 540 dnl    case " $CONFIG_FILES" in
 541 dnl      *" Makefile"*)
 542 dnl        ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
 543 dnl        ;;
 544 dnl    esac
 545 dnl    case $CONFIG_FILES in
 546 dnl      *src/Makefile*)
 547 dnl        grep '^MULTISUBDIR =' Makefile >> src/Makefile
 548 dnl        ;;
 549 dnl    esac
 550 dnl    case $CONFIG_FILES in
 551 dnl      *libsupc++/Makefile*)
 552 dnl        grep '^MULTISUBDIR =' Makefile >> libsupc++/Makefile
 553 dnl        ;;
 554 dnl    esac
 555 dnl    case $CONFIG_FILES in
 556 dnl      *testsuite/Makefile*)
 557 dnl        grep '^MULTISUBDIR =' Makefile >> testsuite/Makefile
 558 dnl        ;;
 559 dnl    esac
 560 dnl  fi
 561 dnl  chmod +x scripts/check_survey
 562 dnl  chmod +x scripts/testsuite_flags
 563 dnl  ],
 564 dnl  srcdir=${srcdir}
 565 dnl  host=${host}
 566 dnl  target=${target}
 567 dnl  with_multisubdir=${with_multisubdir}
 568 dnl  ac_configure_args="${multilib_arg} ${ac_configure_args}"
 569 dnl  CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
 570 dnl  glibcpp_basedir=${glibcpp_basedir}
 571 dnl  CC="${CC}"
 572 dnl  CXX="${CXX}"
 573 dnl  )
 574 dnl  AC_OUTPUT
 575
 576
 577 # Sanity checking & User-visible messages.
 578 # Checks down here, otherwise they get scrolled off before
 579 # the user will notice.
 580
 581 # Trying to get more people to read documentation.  Possibly remove
 582 # check and warn all the time. There is no "informational" AC_MSG_
 583 # macro, so these are going to be printed even when --quiet/--silent
 584 # is given.
 585 if test ! -f stamp-sanity-warned; then
 586   touch stamp-sanity-warned
 587   echo ""
 588   echo "Please make certain that you read the installation information here:"
 589   echo "  faster => ${srcdir}/docs/html/install.html"
 590   echo "  slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/install.html>"
 591   echo ""
 592   echo "and the configuration information here:"
 593   echo "  faster => ${srcdir}/docs/html/configopts.html"
 594   echo "  slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/configopts.html>"
 595   echo ""
 596   echo "before proceeding with ${_cv_gnu_make_command}."
 597   echo ""
 598 fi