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