libstdc++-v3/aclocal.m4

   1 # generated automatically by aclocal 1.7.8 -*- Autoconf -*-
   2
   3 # Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002
   4 # Free Software Foundation, Inc.
   5 # This file is free software; the Free Software Foundation
   6 # gives unlimited permission to copy and/or distribute it,
   7 # with or without modifications, as long as this notice is preserved.
   8
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
  11 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
  12 # PARTICULAR PURPOSE.
  13
  14
  15 dnl
  16 dnl GLIBCXX_CONDITIONAL (NAME, SHELL-TEST)
  17 dnl
  18 dnl Exactly like AM_CONDITIONAL, but delays evaluation of the test until the
  19 dnl end of configure.  This lets tested variables be reassigned, and the
  20 dnl conditional will depend on the final state of the variable.  For a simple
  21 dnl example of why this is needed, see GLIBCXX_ENABLE_HOSTED.
  22 dnl
  23 m4_define([_m4_divert(glibcxx_diversion)], 8000)dnl
  24 AC_DEFUN(GLIBCXX_CONDITIONAL, [dnl
  25   m4_divert_text([glibcxx_diversion],dnl
  26    AM_CONDITIONAL([$1],[$2])
  27   )dnl
  28 ])dnl
  29 AC_DEFUN(GLIBCXX_EVALUATE_CONDITIONALS, [m4_undivert([glibcxx_diversion])])dnl
  30
  31
  32 dnl
  33 dnl Check to see what architecture and operating system we are compiling
  34 dnl for.  Also, if architecture- or OS-specific flags are required for
  35 dnl compilation, pick them up here.
  36 dnl
  37 AC_DEFUN(GLIBCXX_CHECK_HOST, [
  38   . $glibcxx_srcdir/configure.host
  39   AC_MSG_NOTICE(CPU config directory is $cpu_include_dir)
  40   AC_MSG_NOTICE(OS config directory is $os_include_dir)
  41 ])
  42
  43
  44 dnl
  45 dnl Initialize basic configure bits.
  46 dnl
  47 dnl Substs:
  48 dnl  multi_basedir
  49 dnl
  50 AC_DEFUN(GLIBCXX_TOPREL_CONFIGURE, [
  51   # Sets up multi_basedir, which is srcdir/.. plus the usual
  52   # "multi_source_toprel_bottom_adjust" lunacy as needed.
  53   AM_ENABLE_MULTILIB(, ..)
  54
  55   # The generated code is exactly the same, except that automake's looks in
  56   # ".. $srcdir/.." and autoconf's looks in multi_basedir.  Apparently other
  57   # things are triggered on the presence of the two ...AUX_DIR[S], but I don't
  58   # know what they are or what the other differences might be (and they keep
  59   # changing anyhow).
  60   #
  61   # Looking in multi_basedir seems smarter, so actually execute that branch.
  62   if false; then
  63     # this is for automake
  64     AC_CONFIG_AUX_DIR(..)
  65   else
  66     # this is for autoconf
  67     AC_CONFIG_AUX_DIRS(${multi_basedir})
  68   fi
  69
  70   dnl XXX Turn this on.
  71   dnl AC_LANG_CPLUSPLUS
  72 ])
  73
  74
  75 dnl
  76 dnl Initialize the rest of the library configury.  At this point we have
  77 dnl variables like $host.
  78 dnl
  79 dnl Sets:
  80 dnl  gcc_version          (x.y.z format)
  81 dnl  SUBDIRS
  82 dnl Substs:
  83 dnl  glibcxx_builddir     (absolute path)
  84 dnl  glibcxx_srcdir       (absolute path)
  85 dnl  toplevel_srcdir      (absolute path)
  86 dnl  with_cross_host
  87 dnl  with_newlib
  88 dnl  with_target_subdir
  89 dnl plus
  90 dnl  - the variables in GLIBCXX_CHECK_HOST / configure.host
  91 dnl  - default settings for all AM_CONFITIONAL test variables
  92 dnl  - lots of tools, like CC and CXX
  93 dnl
  94 AC_DEFUN(GLIBCXX_CONFIGURE, [
  95   # Keep these sync'd with the list in Makefile.am.  The first provides an
  96   # expandable list at autoconf time; the second provides an expandable list
  97   # (i.e., shell variable) at configure time.
  98   m4_define([glibcxx_SUBDIRS],[include libmath libsupc++ src po testsuite])
  99   SUBDIRS='glibcxx_SUBDIRS'
 100
 101   # These need to be absolute paths, yet at the same time need to
 102   # canonicalize only relative paths, because then amd will not unmount
 103   # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
 104   glibcxx_builddir=`${PWDCMD-pwd}`
 105   case $srcdir in
 106     [\\/$]* | ?:[\\/]*) glibcxx_srcdir=${srcdir} ;;
 107     *) glibcxx_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
 108   esac
 109   toplevel_srcdir=${glibcxx_srcdir}/..
 110   AC_SUBST(glibcxx_builddir)
 111   AC_SUBST(glibcxx_srcdir)
 112   AC_SUBST(toplevel_srcdir)
 113
 114   # We use these options to decide which functions to include.  They are
 115   # set from the top level.
 116   AC_ARG_WITH([target-subdir],
 117     AC_HELP_STRING([--with-target-subdir=SUBDIR],
 118                    [configuring in a subdirectory]))
 119
 120   AC_ARG_WITH([cross-host],
 121     AC_HELP_STRING([--with-cross-host=HOST],
 122                    [configuring with a cross compiler]))
 123
 124   AC_ARG_WITH([newlib],
 125     AC_HELP_STRING([--with-newlib],
 126                    [assume newlib as a system C library]))
 127
 128   # We're almost certainly being configured before anything else which uses
 129   # C++, so all of our AC_PROG_* discoveries will be cached.  It's vital that
 130   # we not cache the value of CXX that we "discover" here, because it's set
 131   # to something unique for us and libjava.  Other target libraries need to
 132   # find CXX for themselves.  We yank the rug out from under the normal AC_*
 133   # process by sneakily renaming the cache variable.  This also lets us debug
 134   # the value of "our" CXX in postmortems.
 135   #
 136   # We must also force CXX to /not/ be a precious variable, otherwise the
 137   # wrong (non-multilib-adjusted) value will be used in multilibs.  This
 138   # little trick also affects CPPFLAGS, CXXFLAGS, and LDFLAGS.  And as a side
 139   # effect, CXXFLAGS is no longer automagically subst'd, so we have to do
 140   # that ourselves.  Un-preciousing AC_PROG_CC also affects CC and CFLAGS.
 141   #
 142   # -fno-builtin must be present here so that a non-conflicting form of
 143   # std::exit can be guessed by AC_PROG_CXX, and used in later tests.
 144
 145   m4_define([ac_cv_prog_CXX],[glibcxx_cv_prog_CXX])
 146   m4_rename([_AC_ARG_VAR_PRECIOUS],[glibcxx_PRECIOUS])
 147   m4_define([_AC_ARG_VAR_PRECIOUS],[])
 148   save_CXXFLAGS="$CXXFLAGS"
 149   CXXFLAGS="$CXXFLAGS -fno-builtin"
 150   AC_PROG_CC
 151   AC_PROG_CXX
 152   CXXFLAGS="$save_CXXFLAGS"
 153   m4_rename([glibcxx_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
 154   AC_SUBST(CFLAGS)
 155   AC_SUBST(CXXFLAGS)
 156
 157   # For directory versioning (e.g., headers) and other variables.
 158   AC_MSG_CHECKING([for GCC version number])
 159   gcc_version=`$CXX -dumpversion`
 160   AC_MSG_RESULT($gcc_version)
 161
 162   # Will set LN_S to either 'ln -s', 'ln', or 'cp -p' (if linking isn't
 163   # available).  Uncomment the next line to force a particular method.
 164   AC_PROG_LN_S
 165   #LN_S='cp -p'
 166
 167   AC_CHECK_TOOL(AS, as)
 168   AC_CHECK_TOOL(AR, ar)
 169   AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
 170
 171   AM_MAINTAINER_MODE
 172
 173   # Set up safe default values for all subsequent AM_CONDITIONAL tests
 174   # which are themselves conditionally expanded.
 175   ## (Right now, this only matters for enable_wchar_t, but nothing prevents
 176   ## other macros from doing the same.  This should be automated.)  -pme
 177   need_libmath=no
 178   enable_wchar_t=no
 179   #enable_libstdcxx_debug=no
 180   #enable_libstdcxx_pch=no
 181   #enable_cheaders=c
 182   #c_compatibility=no
 183   #enable_abi_check=no
 184   #enable_symvers=no
 185   #enable_hosted_libstdcxx=yes
 186
 187   # Find platform-specific directories containing configuration info.
 188   # Also possibly modify flags used elsewhere, as needed by the platform.
 189   GLIBCXX_CHECK_HOST
 190 ])
 191
 192
 193 m4_include([linkage.m4])
 194 m4_include([../config/no-executables.m4])
 195
 196
 197 dnl
 198 dnl Tests for newer compiler features, or features that are present in newer
 199 dnl compiler versions but not older compiler versions still in use, should
 200 dnl be placed here.
 201 dnl
 202 dnl Defines:
 203 dnl  WERROR='-Werror' if requested and possible; g++'s that lack the
 204 dnl   new inlining code or the new system_header pragma will die on -Werror.
 205 dnl   Leave it out by default and use maint-mode to use it.
 206 dnl  SECTION_FLAGS='-ffunction-sections -fdata-sections' if
 207 dnl   compiler supports it and the user has not requested debug mode.
 208 dnl
 209 AC_DEFUN(GLIBCXX_CHECK_COMPILER_FEATURES, [
 210   # All these tests are for C++; save the language and the compiler flags.
 211   # The CXXFLAGS thing is suspicious, but based on similar bits previously
 212   # found in GLIBCXX_CONFIGURE.
 213   AC_LANG_SAVE
 214   AC_LANG_CPLUSPLUS
 215   ac_test_CXXFLAGS="${CXXFLAGS+set}"
 216   ac_save_CXXFLAGS="$CXXFLAGS"
 217
 218   # Check for maintainer-mode bits.
 219   if test x"$USE_MAINTAINER_MODE" = xno; then
 220     WERROR=''
 221   else
 222     WERROR='-Werror'
 223   fi
 224
 225   # Check for -ffunction-sections -fdata-sections
 226   AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
 227   CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
 228   AC_TRY_COMPILE(, [int foo;], [ac_fdsections=yes], [ac_fdsections=no])
 229   if test "$ac_test_CXXFLAGS" = set; then
 230     CXXFLAGS="$ac_save_CXXFLAGS"
 231   else
 232     # this is the suspicious part
 233     CXXFLAGS=''
 234   fi
 235   if test x"$ac_fdsections" = x"yes"; then
 236     SECTION_FLAGS='-ffunction-sections -fdata-sections'
 237   fi
 238   AC_MSG_RESULT($ac_fdsections)
 239
 240   AC_LANG_RESTORE
 241   AC_SUBST(WERROR)
 242   AC_SUBST(SECTION_FLAGS)
 243 ])
 244
 245
 246 dnl
 247 dnl If GNU ld is in use, check to see if tricky linker opts can be used.  If
 248 dnl the native linker is in use, all variables will be defined to something
 249 dnl safe (like an empty string).
 250 dnl
 251 dnl Defines:
 252 dnl  SECTION_LDFLAGS='-Wl,--gc-sections' if possible
 253 dnl  OPT_LDFLAGS='-Wl,-O1' if possible
 254 dnl  LD (as a side effect of testing)
 255 dnl Sets:
 256 dnl  with_gnu_ld
 257 dnl  glibcxx_gnu_ld_version (possibly)
 258 dnl
 259 dnl The last will be a single integer, e.g., version 1.23.45.0.67.89 will
 260 dnl set glibcxx_gnu_ld_version to 12345.  Zeros cause problems.
 261 dnl
 262 AC_DEFUN(GLIBCXX_CHECK_LINKER_FEATURES, [
 263   # If we're not using GNU ld, then there's no point in even trying these
 264   # tests.  Check for that first.  We should have already tested for gld
 265   # by now (in libtool), but require it now just to be safe...
 266   test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
 267   test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
 268   AC_REQUIRE([AC_PROG_LD])
 269   AC_REQUIRE([AC_PROG_AWK])
 270
 271   # The name set by libtool depends on the version of libtool.  Shame on us
 272   # for depending on an impl detail, but c'est la vie.  Older versions used
 273   # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
 274   # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
 275   # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
 276   # set (hence we're using an older libtool), then set it.
 277   if test x${with_gnu_ld+set} != xset; then
 278     if test x${ac_cv_prog_gnu_ld+set} != xset; then
 279       # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
 280       with_gnu_ld=no
 281     else
 282       with_gnu_ld=$ac_cv_prog_gnu_ld
 283     fi
 284   fi
 285
 286   # Start by getting the version number.  I think the libtool test already
 287   # does some of this, but throws away the result.
 288   changequote(,)
 289   ldver=`$LD --version 2>/dev/null | head -1 | \
 290          sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
 291   changequote([,])
 292   glibcxx_gnu_ld_version=`echo $ldver | \
 293          $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'`
 294
 295   # Set --gc-sections.
 296   if test "$with_gnu_ld" = "notbroken"; then
 297     # GNU ld it is!  Joy and bunny rabbits!
 298
 299     # All these tests are for C++; save the language and the compiler flags.
 300     # Need to do this so that g++ won't try to link in libstdc++
 301     ac_test_CFLAGS="${CFLAGS+set}"
 302     ac_save_CFLAGS="$CFLAGS"
 303     CFLAGS='-x c++  -Wl,--gc-sections'
 304
 305     # Check for -Wl,--gc-sections
 306     # XXX This test is broken at the moment, as symbols required for linking
 307     # are now in libsupc++ (not built yet).  In addition, this test has
 308     # cored on solaris in the past.  In addition, --gc-sections doesn't
 309     # really work at the moment (keeps on discarding used sections, first
 310     # .eh_frame and now some of the glibc sections for iconv).
 311     # Bzzzzt.  Thanks for playing, maybe next time.
 312     AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
 313     AC_TRY_RUN([
 314      int main(void)
 315      {
 316        try { throw 1; }
 317        catch (...) { };
 318        return 0;
 319      }
 320     ], [ac_sectionLDflags=yes],[ac_sectionLDflags=no], [ac_sectionLDflags=yes])
 321     if test "$ac_test_CFLAGS" = set; then
 322       CFLAGS="$ac_save_CFLAGS"
 323     else
 324       # this is the suspicious part
 325       CFLAGS=''
 326     fi
 327     if test "$ac_sectionLDflags" = "yes"; then
 328       SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
 329     fi
 330     AC_MSG_RESULT($ac_sectionLDflags)
 331   fi
 332
 333   # Set linker optimization flags.
 334   if test x"$with_gnu_ld" = x"yes"; then
 335     OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
 336   fi
 337
 338   AC_SUBST(SECTION_LDFLAGS)
 339   AC_SUBST(OPT_LDFLAGS)
 340 ])
 341
 342
 343 dnl
 344 dnl Check to see if this target can enable the wchar_t parts.
 345 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled.  (This
 346 dnl must have been previously checked.)  By default, wide characters are
 347 dnl disabled.
 348 dnl
 349 dnl Defines:
 350 dnl  HAVE_MBSTATE_T if mbstate_t is not in wchar.h
 351 dnl  _GLIBCXX_USE_WCHAR_T if all the bits are found.
 352 dnl
 353 AC_DEFUN(GLIBCXX_CHECK_WCHAR_T_SUPPORT, [
 354   # Test wchar.h for mbstate_t, which is needed for char_traits and
 355   # others even if wchar_t support is not on.
 356   AC_MSG_CHECKING([for mbstate_t])
 357   AC_TRY_COMPILE([#include <wchar.h>],
 358   [mbstate_t teststate;],
 359   have_mbstate_t=yes, have_mbstate_t=no)
 360   AC_MSG_RESULT($have_mbstate_t)
 361   if test x"$have_mbstate_t" = xyes; then
 362     AC_DEFINE(HAVE_MBSTATE_T)
 363   fi
 364
 365   # Sanity check for existence of ISO C99 headers for extended encoding.
 366   AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
 367   AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
 368
 369   # Only continue checking if the ISO C99 headers exist and support is on.
 370   if test x"$ac_has_wchar_h" = xyes &&
 371      test x"$ac_has_wctype_h" = xyes &&
 372      test x"$enable_c_mbchar" != xno; then
 373
 374     # Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
 375     # numeric_limits can instantiate type_traits<wchar_t>
 376     AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
 377     AC_TRY_COMPILE([#include <wchar.h>],
 378     [int i = WCHAR_MIN; int j = WCHAR_MAX;],
 379     has_wchar_minmax=yes, has_wchar_minmax=no)
 380     AC_MSG_RESULT($has_wchar_minmax)
 381
 382     # Test wchar.h for WEOF, which is what we use to determine whether
 383     # to specialize for char_traits<wchar_t> or not.
 384     AC_MSG_CHECKING([for WEOF])
 385     AC_TRY_COMPILE([
 386       #include <wchar.h>
 387       #include <stddef.h>],
 388     [wint_t i = WEOF;],
 389     has_weof=yes, has_weof=no)
 390     AC_MSG_RESULT($has_weof)
 391
 392     # Tests for wide character functions used in char_traits<wchar_t>.
 393     ac_wfuncs=yes
 394     AC_CHECK_FUNCS([wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset],
 395     [],[ac_wfuncs=no])
 396
 397     # Checks for names injected into std:: by the c_std headers.
 398     AC_CHECK_FUNCS([btowc wctob fgetwc fgetws fputwc fputws fwide \
 399     fwprintf fwscanf swprintf swscanf vfwprintf vswprintf \
 400     vwprintf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
 401     mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstol \
 402     wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
 403     wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr],
 404     [],[ac_wfuncs=no])
 405
 406     # Checks for wide character functions that are not required
 407     # for basic wchar_t support.  Don't disable support if they are missing.
 408     # Injection of these is wrapped with guard macros.
 409     AC_CHECK_FUNCS([vfwscanf vswscanf vwscanf wcstof iswblank],[],[])
 410
 411     AC_MSG_CHECKING([for ISO C99 wchar_t support])
 412     if test x"$has_weof" = xyes &&
 413        test x"$has_wchar_minmax" = xyes &&
 414        test x"$ac_wfuncs" = xyes;
 415     then
 416       ac_isoC99_wchar_t=yes
 417     else
 418       ac_isoC99_wchar_t=no
 419     fi
 420     AC_MSG_RESULT($ac_isoC99_wchar_t)
 421
 422     # Use iconv for wchar_t to char conversions. As such, check for
 423     # X/Open Portability Guide, version 2 features (XPG2).
 424     AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
 425     AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
 426
 427     # Check for existence of libiconv.a providing XPG2 wchar_t support.
 428     AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
 429     ac_save_LIBS="$LIBS"
 430     LIBS="$LIBS $libiconv"
 431
 432     AC_CHECK_FUNCS([iconv_open iconv_close iconv nl_langinfo],
 433     [ac_XPG2funcs=yes], [ac_XPG2funcs=no])
 434
 435     LIBS="$ac_save_LIBS"
 436
 437     AC_MSG_CHECKING([for XPG2 wchar_t support])
 438     if test x"$ac_has_iconv_h" = xyes &&
 439        test x"$ac_has_langinfo_h" = xyes &&
 440        test x"$ac_XPG2funcs" = xyes;
 441     then
 442       ac_XPG2_wchar_t=yes
 443     else
 444       ac_XPG2_wchar_t=no
 445     fi
 446     AC_MSG_RESULT($ac_XPG2_wchar_t)
 447
 448     # At the moment, only enable wchar_t specializations if all the
 449     # above support is present.
 450     if test x"$ac_isoC99_wchar_t" = xyes &&
 451        test x"$ac_XPG2_wchar_t" = xyes;
 452     then
 453       AC_DEFINE(_GLIBCXX_USE_WCHAR_T)
 454       enable_wchar_t=yes
 455     fi
 456   fi
 457   AC_MSG_CHECKING([for enabled wchar_t specializations])
 458   AC_MSG_RESULT($enable_wchar_t)
 459 ])
 460
 461
 462 dnl
 463 dnl Check for headers for, and arguments to, the setrlimit() function.
 464 dnl Used only in testsuite_hooks.h.  Called from GLIBCXX_CONFIGURE_TESTSUITE.
 465 dnl
 466 dnl Defines:
 467 dnl  _GLIBCXX_MEM_LIMITS if we can set artificial limits on memory
 468 dnl  various HAVE_MEMLIMIT_* for individual limit names
 469 dnl
 470 AC_DEFUN(GLIBCXX_CHECK_SETRLIMIT_ancilliary, [
 471   AC_TRY_COMPILE(
 472     [#include <unistd.h>
 473      #include <sys/time.h>
 474      #include <sys/resource.h>
 475     ],
 476     [ int f = RLIMIT_$1 ; ],
 477     [glibcxx_mresult=1], [glibcxx_mresult=0])
 478   AC_DEFINE_UNQUOTED(HAVE_MEMLIMIT_$1, $glibcxx_mresult,
 479                      [Only used in build directory testsuite_hooks.h.])
 480 ])
 481
 482 AC_DEFUN(GLIBCXX_CHECK_SETRLIMIT, [
 483   setrlimit_have_headers=yes
 484   AC_CHECK_HEADERS(unistd.h sys/time.h sys/resource.h,
 485                    [],
 486                    [setrlimit_have_headers=no])
 487   # If don't have the headers, then we can't run the tests now, and we
 488   # won't be seeing any of these during testsuite compilation.
 489   if test $setrlimit_have_headers = yes; then
 490     # Can't do these in a loop, else the resulting syntax is wrong.
 491     GLIBCXX_CHECK_SETRLIMIT_ancilliary(DATA)
 492     GLIBCXX_CHECK_SETRLIMIT_ancilliary(RSS)
 493     GLIBCXX_CHECK_SETRLIMIT_ancilliary(VMEM)
 494     GLIBCXX_CHECK_SETRLIMIT_ancilliary(AS)
 495
 496     # Check for rlimit, setrlimit.
 497     AC_CACHE_VAL(ac_setrlimit, [
 498       AC_TRY_COMPILE(
 499         [#include <unistd.h>
 500          #include <sys/time.h>
 501          #include <sys/resource.h>
 502         ],
 503         [struct rlimit r;
 504          setrlimit(0, &r);],
 505         [ac_setrlimit=yes], [ac_setrlimit=no])
 506     ])
 507   fi
 508
 509   AC_MSG_CHECKING([for testsuite memory limit support])
 510   if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then
 511     ac_mem_limits=yes
 512     AC_DEFINE(_GLIBCXX_MEM_LIMITS)
 513   else
 514     ac_mem_limits=no
 515   fi
 516   AC_MSG_RESULT($ac_mem_limits)
 517 ])
 518
 519
 520 dnl
 521 dnl Check whether S_ISREG (Posix) or S_IFREG is available in <sys/stat.h>.
 522 dnl Define HAVE_S_ISREG / HAVE_S_IFREG appropriately.
 523 dnl
 524 AC_DEFUN(GLIBCXX_CHECK_S_ISREG_OR_S_IFREG, [
 525   AC_CACHE_VAL(glibcxx_cv_S_ISREG, [
 526     AC_TRY_LINK(
 527       [#include <sys/stat.h>],
 528       [struct stat buffer;
 529        fstat(0, &buffer);
 530        S_ISREG(buffer.st_mode);],
 531       [glibcxx_cv_S_ISREG=yes],
 532       [glibcxx_cv_S_ISREG=no])
 533   ])
 534   AC_CACHE_VAL(glibcxx_cv_S_IFREG, [
 535     AC_TRY_LINK(
 536       [#include <sys/stat.h>],
 537       [struct stat buffer;
 538        fstat(0, &buffer);
 539        S_IFREG & buffer.st_mode;],
 540       [glibcxx_cv_S_IFREG=yes],
 541       [glibcxx_cv_S_IFREG=no])
 542   ])
 543   if test $glibcxx_cv_S_ISREG = yes; then
 544     AC_DEFINE(HAVE_S_ISREG)
 545   elif test $glibcxx_cv_S_IFREG = yes; then
 546     AC_DEFINE(HAVE_S_IFREG)
 547   fi
 548 ])
 549
 550
 551 dnl
 552 dnl Check whether poll is available in <poll.h>, and define HAVE_POLL.
 553 dnl
 554 AC_DEFUN(GLIBCXX_CHECK_POLL, [
 555   AC_CACHE_VAL(glibcxx_cv_POLL, [
 556     AC_TRY_LINK(
 557       [#include <poll.h>],
 558       [struct pollfd pfd[1];
 559        pfd[0].events = POLLIN;
 560        poll(pfd, 1, 0);],
 561       [glibcxx_cv_POLL=yes],
 562       [glibcxx_cv_POLL=no])
 563   ])
 564   if test $glibcxx_cv_POLL = yes; then
 565     AC_DEFINE(HAVE_POLL)
 566   fi
 567 ])
 568
 569
 570 dnl
 571 dnl Check whether writev is available in <sys/uio.h>, and define HAVE_WRITEV.
 572 dnl
 573 AC_DEFUN(GLIBCXX_CHECK_WRITEV, [
 574   AC_CACHE_VAL(glibcxx_cv_WRITEV, [
 575     AC_TRY_LINK(
 576       [#include <sys/uio.h>],
 577       [struct iovec iov[2];
 578        writev(0, iov, 0);],
 579       [glibcxx_cv_WRITEV=yes],
 580       [glibcxx_cv_WRITEV=no])
 581   ])
 582   if test $glibcxx_cv_WRITEV = yes; then
 583     AC_DEFINE(HAVE_WRITEV)
 584   fi
 585 ])
 586
 587
 588 dnl
 589 dnl Check whether int64_t is available in <stdint.h>, and define HAVE_INT64_T.
 590 dnl
 591 AC_DEFUN(GLIBCXX_CHECK_INT64_T, [
 592   AC_CACHE_VAL(glibcxx_cv_INT64_T, [
 593     AC_TRY_COMPILE(
 594       [#include <stdint.h>],
 595       [int64_t var;],
 596       [glibcxx_cv_INT64_T=yes],
 597       [glibcxx_cv_INT64_T=no])
 598   ])
 599   if test $glibcxx_cv_INT64_T = yes; then
 600     AC_DEFINE(HAVE_INT64_T)
 601   fi
 602 ])
 603
 604
 605 dnl
 606 dnl Check whether LFS support is available.
 607 dnl
 608 AC_DEFUN(GLIBCXX_CHECK_LFS, [
 609   AC_LANG_SAVE
 610   AC_LANG_CPLUSPLUS
 611   AC_CACHE_VAL(glibcxx_cv_LFS, [
 612     AC_TRY_LINK(
 613       [#include <unistd.h>
 614        #include <stdio.h>
 615       ],
 616       [FILE* fp;
 617        fopen64("t", "w");
 618        fseeko64(fp, 0, SEEK_CUR);
 619        ftello64(fp);
 620        lseek64(1, 0, SEEK_CUR);],
 621       [glibcxx_cv_LFS=yes],
 622       [glibcxx_cv_LFS=no])
 623   ])
 624   if test $glibcxx_cv_LFS = yes; then
 625     AC_DEFINE(_GLIBCXX_USE_LFS)
 626   fi
 627   AC_LANG_RESTORE
 628 ])
 629
 630
 631 dnl
 632 dnl Does any necessary configuration of the testsuite directory.  Generates
 633 dnl the testsuite_hooks.h header.
 634 dnl
 635 dnl GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE must be done before this.
 636 dnl
 637 dnl Sets:
 638 dnl  enable_abi_check / GLIBCXX_TEST_ABI
 639 dnl Substs:
 640 dnl  baseline_dir
 641 dnl
 642 AC_DEFUN(GLIBCXX_CONFIGURE_TESTSUITE, [
 643   if $GLIBCXX_IS_NATIVE && test $is_hosted = yes; then
 644     # Do checks for memory limit functions.
 645     GLIBCXX_CHECK_SETRLIMIT
 646
 647     # Look for setenv, so that extended locale tests can be performed.
 648     GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv)
 649
 650     if test $enable_symvers = no; then
 651       enable_abi_check=no
 652     else
 653       case "$host" in
 654         *-*-cygwin*)
 655           enable_abi_check=no ;;
 656         *)
 657           enable_abi_check=yes ;;
 658       esac
 659     fi
 660   else
 661     # Only build this as native, since automake does not understand
 662     # CXX_FOR_BUILD.
 663     enable_abi_check=no
 664   fi
 665
 666   # Export file names for ABI checking.
 667   baseline_dir="$glibcxx_srcdir/config/abi/${abi_baseline_pair}\$(MULTISUBDIR)"
 668   AC_SUBST(baseline_dir)
 669
 670   GLIBCXX_CONDITIONAL(GLIBCXX_TEST_WCHAR_T, test $enable_wchar_t = yes)
 671   GLIBCXX_CONDITIONAL(GLIBCXX_TEST_ABI, test $enable_abi_check = yes)
 672 ])
 673
 674
 675 dnl
 676 dnl Set up *_INCLUDES variables for all sundry Makefile.am's.
 677 dnl
 678 dnl Substs:
 679 dnl  GLIBCXX_INCLUDES
 680 dnl  TOPLEVEL_INCLUDES
 681 dnl
 682 AC_DEFUN(GLIBCXX_EXPORT_INCLUDES, [
 683   # Used for every C++ compile we perform.
 684   GLIBCXX_INCLUDES="\
 685 -I$glibcxx_builddir/include/$host_alias \
 686 -I$glibcxx_builddir/include \
 687 -I$glibcxx_srcdir/libsupc++"
 688
 689   # For Canadian crosses, pick this up too.
 690   if test $CANADIAN = yes; then
 691     GLIBCXX_INCLUDES="$GLIBCXX_INCLUDES -I\${includedir}"
 692   fi
 693
 694   # Stuff in the actual top level.  Currently only used by libsupc++ to
 695   # get unwind* headers from the gcc dir.
 696   #TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/gcc -I$(toplevel_srcdir)/include'
 697   TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/gcc'
 698
 699   # Now, export this to all the little Makefiles....
 700   AC_SUBST(GLIBCXX_INCLUDES)
 701   AC_SUBST(TOPLEVEL_INCLUDES)
 702 ])
 703
 704
 705 dnl
 706 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
 707 dnl (SECTION_FLAGS is done under CHECK_COMPILER_FEATURES.)
 708 dnl
 709 dnl Substs:
 710 dnl  OPTIMIZE_CXXFLAGS
 711 dnl  WARN_FLAGS
 712 dnl
 713 AC_DEFUN(GLIBCXX_EXPORT_FLAGS, [
 714   # Optimization flags that are probably a good idea for thrill-seekers. Just
 715   # uncomment the lines below and make, everything else is ready to go...
 716   # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
 717   OPTIMIZE_CXXFLAGS=
 718   AC_SUBST(OPTIMIZE_CXXFLAGS)
 719
 720   WARN_FLAGS='-Wall -W -Wwrite-strings -Wcast-qual'
 721   AC_SUBST(WARN_FLAGS)
 722 ])
 723
 724
 725 dnl
 726 dnl All installation directory information is determined here.
 727 dnl
 728 dnl Substs:
 729 dnl  gxx_install_dir
 730 dnl  glibcxx_prefixdir
 731 dnl  glibcxx_toolexecdir
 732 dnl  glibcxx_toolexeclibdir
 733 dnl
 734 dnl Assumes cross_compiling bits already done, and with_cross_host in
 735 dnl particular.
 736 dnl
 737 AC_DEFUN(GLIBCXX_EXPORT_INSTALL_INFO, [
 738   glibcxx_toolexecdir=no
 739   glibcxx_toolexeclibdir=no
 740   glibcxx_prefixdir=$prefix
 741
 742   AC_MSG_CHECKING([for gxx-include-dir])
 743   AC_ARG_WITH([gxx-include-dir],
 744     AC_HELP_STRING([--with-gxx-include-dir=DIR],
 745                    [installation directory for include files]),
 746     [case "$withval" in
 747       yes) AC_MSG_ERROR([Missing directory for --with-gxx-include-dir]) ;;
 748       no)  gxx_include_dir=no ;;
 749       *)   gxx_include_dir=$withval ;;
 750      esac],
 751     [gxx_include_dir=no])
 752   AC_MSG_RESULT($gxx_include_dir)
 753
 754   AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
 755   AC_ARG_ENABLE([version-specific-runtime-libs],
 756     AC_HELP_STRING([--enable-version-specific-runtime-libs],
 757                    [Specify that runtime libraries should be installed in a compiler-specific directory]),
 758     [case "$enableval" in
 759       yes) version_specific_libs=yes ;;
 760       no)  version_specific_libs=no ;;
 761       *)   AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
 762      esac],
 763     [version_specific_libs=no])
 764   AC_MSG_RESULT($version_specific_libs)
 765
 766   # Default case for install directory for include files.
 767   if test $version_specific_libs = no && test $gxx_include_dir = no; then
 768     gxx_include_dir='${prefix}'/include/c++/${gcc_version}
 769   fi
 770
 771   # Version-specific runtime libs processing.
 772   if test $version_specific_libs = yes; then
 773     # Need the gcc compiler version to know where to install libraries
 774     # and header files if --enable-version-specific-runtime-libs option
 775     # is selected.
 776     if test x"$gxx_include_dir" = x"no"; then
 777       gxx_include_dir='${libdir}/gcc-lib/${host_alias}/'$gcc_version/include/c++
 778     fi
 779     glibcxx_toolexecdir='${libdir}/gcc-lib/${host_alias}'
 780     glibcxx_toolexeclibdir='${toolexecdir}/'$gcc_version'$(MULTISUBDIR)'
 781   fi
 782
 783   # Calculate glibcxx_toolexecdir, glibcxx_toolexeclibdir
 784   # Install a library built with a cross compiler in tooldir, not libdir.
 785   if test x"$glibcxx_toolexecdir" = x"no"; then
 786     if test -n "$with_cross_host" &&
 787        test x"$with_cross_host" != x"no"; then
 788       glibcxx_toolexecdir='${exec_prefix}/${host_alias}'
 789       glibcxx_toolexeclibdir='${toolexecdir}/lib'
 790     else
 791       glibcxx_toolexecdir='${libdir}/gcc-lib/${host_alias}'
 792       glibcxx_toolexeclibdir='${libdir}'
 793     fi
 794     multi_os_directory=`$CXX -print-multi-os-directory`
 795     case $multi_os_directory in
 796       .) ;; # Avoid trailing /.
 797       *) glibcxx_toolexeclibdir=$glibcxx_toolexeclibdir/$multi_os_directory ;;
 798     esac
 799   fi
 800
 801   AC_MSG_CHECKING([for install location])
 802   AC_MSG_RESULT($gxx_include_dir)
 803
 804   AC_SUBST(glibcxx_prefixdir)
 805   AC_SUBST(gxx_include_dir)
 806   AC_SUBST(glibcxx_toolexecdir)
 807   AC_SUBST(glibcxx_toolexeclibdir)
 808 ])
 809
 810
 811 dnl
 812 dnl GLIBCXX_ENABLE
 813 dnl    (FEATURE, DEFAULT, HELP-ARG, HELP-STRING)
 814 dnl    (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, permit a|b|c)
 815 dnl    (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, SHELL-CODE-HANDLER)
 816 dnl
 817 dnl See docs/html/17_intro/configury.html#enable for documentation.
 818 dnl
 819 m4_define([GLIBCXX_ENABLE],[dnl
 820 m4_define([_g_switch],[--enable-$1])dnl
 821 m4_define([_g_help],[AC_HELP_STRING(_g_switch$3,[$4 @<:@default=$2@:>@])])dnl
 822  AC_ARG_ENABLE($1,_g_help,
 823   m4_bmatch([$5],
 824    [^permit ],
 825      [[
 826       case "$enableval" in
 827        m4_bpatsubst([$5],[permit ])) ;;
 828        *) AC_MSG_ERROR(Unknown argument to enable/disable $1) ;;
 829           dnl Idea for future:  generate a URL pointing to
 830           dnl "onlinedocs/configopts.html#whatever"
 831       esac
 832      ]],
 833    [^$],
 834      [[
 835       case "$enableval" in
 836        yes|no) ;;
 837        *) AC_MSG_ERROR(Argument to enable/disable $1 must be yes or no) ;;
 838       esac
 839      ]],
 840    [[$5]]),
 841   [enable_]m4_bpatsubst([$1],-,_)[=][$2])
 842 m4_undefine([_g_switch])dnl
 843 m4_undefine([_g_help])dnl
 844 ])
 845
 846
 847 dnl
 848 dnl Check for ISO/IEC 9899:1999 "C99" support.
 849 dnl
 850 dnl --enable-c99 defines _GLIBCXX_USE_C99
 851 dnl --disable-c99 leaves _GLIBCXX_USE_C99 undefined
 852 dnl  +  Usage:  GLIBCXX_ENABLE_C99[(DEFAULT)]
 853 dnl       Where DEFAULT is either `yes' or `no'.
 854 dnl  +  If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
 855 dnl
 856 AC_DEFUN(GLIBCXX_ENABLE_C99, [
 857   GLIBCXX_ENABLE(c99,$1,,[turns on ISO/IEC 9899:1999 support])
 858
 859   AC_LANG_SAVE
 860   AC_LANG_CPLUSPLUS
 861
 862   # Check for the existence of <math.h> functions used if C99 is enabled.
 863   ac_c99_math=yes;
 864   AC_MSG_CHECKING([for ISO C99 support in <math.h>])
 865   AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
 866   AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
 867   AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
 868   AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
 869   AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
 870   AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
 871   AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
 872   AC_TRY_COMPILE([#include <math.h>],
 873                  [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
 874   AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
 875   AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
 876   AC_TRY_COMPILE([#include <math.h>],
 877                  [islessgreater(0.0,0.0);],, [ac_c99_math=no])
 878   AC_TRY_COMPILE([#include <math.h>],
 879                  [isunordered(0.0,0.0);],, [ac_c99_math=no])
 880   AC_MSG_RESULT($ac_c99_math)
 881
 882   # Check for the existence in <stdio.h> of vscanf, et. al.
 883   ac_c99_stdio=yes;
 884   AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
 885   AC_TRY_COMPILE([#include <stdio.h>],
 886                  [snprintf("12", 0, "%i");],, [ac_c99_stdio=no])
 887   AC_TRY_COMPILE([#include <stdio.h>
 888                   #include <stdarg.h>
 889                   void foo(char* fmt, ...)
 890                   {va_list args; va_start(args, fmt);
 891                   vfscanf(stderr, "%i", args);}],
 892                   [],, [ac_c99_stdio=no])
 893   AC_TRY_COMPILE([#include <stdio.h>
 894                   #include <stdarg.h>
 895                   void foo(char* fmt, ...)
 896                   {va_list args; va_start(args, fmt);
 897                   vscanf("%i", args);}],
 898                   [],, [ac_c99_stdio=no])
 899   AC_TRY_COMPILE([#include <stdio.h>
 900                   #include <stdarg.h>
 901                   void foo(char* fmt, ...)
 902                   {va_list args; va_start(args, fmt);
 903                   vsnprintf(fmt, 0, "%i", args);}],
 904                   [],, [ac_c99_stdio=no])
 905   AC_TRY_COMPILE([#include <stdio.h>
 906                   #include <stdarg.h>
 907                   void foo(char* fmt, ...)
 908                   {va_list args; va_start(args, fmt);
 909                   vsscanf(fmt, "%i", args);}],
 910                   [],, [ac_c99_stdio=no])
 911   AC_MSG_RESULT($ac_c99_stdio)
 912
 913   # Check for the existence in <stdlib.h> of lldiv_t, et. al.
 914   ac_c99_stdlib=yes;
 915   AC_MSG_CHECKING([for lldiv_t declaration])
 916   AC_CACHE_VAL(ac_c99_lldiv_t, [
 917   AC_TRY_COMPILE([#include <stdlib.h>],
 918                    [ lldiv_t mydivt;],
 919                    [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
 920   ])
 921   AC_MSG_RESULT($ac_c99_lldiv_t)
 922
 923   AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
 924   AC_TRY_COMPILE([#include <stdlib.h>],
 925                  [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
 926   AC_TRY_COMPILE([#include <stdlib.h>],
 927                  [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
 928   AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
 929   AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
 930   AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
 931   AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no])
 932   if test x"$ac_c99_lldiv_t" = x"no"; then
 933     ac_c99_stdlib=no;
 934   fi;
 935   AC_MSG_RESULT($ac_c99_stdlib)
 936
 937   # Check for the existence of <wchar.h> functions used if C99 is enabled.
 938   # XXX the wchar.h checks should be rolled into the general C99 bits.
 939   ac_c99_wchar=yes;
 940   AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>])
 941   AC_TRY_COMPILE([#include <wchar.h>],
 942                  [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
 943   AC_TRY_COMPILE([#include <wchar.h>],
 944                  [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
 945   AC_TRY_COMPILE([#include <wchar.h>],
 946                  [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
 947   AC_MSG_RESULT($ac_c99_wchar)
 948
 949   AC_MSG_CHECKING([for enabled ISO C99 support])
 950   if test x"$ac_c99_math" = x"no" ||
 951      test x"$ac_c99_stdio" = x"no" ||
 952      test x"$ac_c99_stdlib" = x"no" ||
 953      test x"$ac_c99_wchar" = x"no"; then
 954     enable_c99=no;
 955   fi;
 956   AC_MSG_RESULT($enable_c99)
 957
 958   # Option parsed, now set things appropriately
 959   if test x"$enable_c99" = x"yes"; then
 960     AC_DEFINE(_GLIBCXX_USE_C99)
 961   fi
 962
 963   AC_LANG_RESTORE
 964 ])
 965
 966
 967 dnl
 968 dnl Check for what type of C headers to use.
 969 dnl
 970 dnl --enable-cheaders= [does stuff].
 971 dnl --disable-cheaders [does not do anything, really].
 972 dnl  +  Usage:  GLIBCXX_ENABLE_CHEADERS[(DEFAULT)]
 973 dnl       Where DEFAULT is either `c' or `c_std'.
 974 dnl
 975 AC_DEFUN(GLIBCXX_ENABLE_CHEADERS, [
 976   GLIBCXX_ENABLE(cheaders,$1,[=KIND],
 977     [construct "C" headers for g++], [permit c|c_std])
 978   AC_MSG_NOTICE("C" header strategy set to $enable_cheaders)
 979
 980   C_INCLUDE_DIR='${glibcxx_srcdir}/include/'$enable_cheaders
 981
 982   AC_SUBST(C_INCLUDE_DIR)
 983   GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C, test $enable_cheaders = c)
 984   GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_STD, test $enable_cheaders = c_std)
 985   GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_COMPATIBILITY, test $c_compatibility = yes)
 986 ])
 987
 988
 989 dnl
 990 dnl Check for which locale library to use.  The choice is mapped to
 991 dnl a subdirectory of config/locale.
 992 dnl
 993 dnl Default is generic.
 994 dnl
 995 AC_DEFUN(GLIBCXX_ENABLE_CLOCALE, [
 996   AC_MSG_CHECKING([for C locale to use])
 997   GLIBCXX_ENABLE(clocale,auto,[@<:@=MODEL@:>@],
 998     [use MODEL for target locale package],
 999     [permit generic|gnu|ieee_1003.1-2001|yes|no|auto])
1000
1001   # If they didn't use this option switch, or if they specified --enable
1002   # with no specific model, we'll have to look for one.  If they
1003   # specified --disable (???), do likewise.
1004   if test $enable_clocale = no || test $enable_clocale = yes; then
1005      enable_clocale=auto
1006   fi
1007
1008   # Either a known package, or "auto"
1009   enable_clocale_flag=$enable_clocale
1010
1011   # Probe for locale support if no specific model is specified.
1012   # Default to "generic".
1013   if test $enable_clocale_flag = auto; then
1014     case x${target_os} in
1015       xlinux* | xgnu* | xkfreebsd*-gnu | xknetbsd*-gnu)
1016         AC_EGREP_CPP([_GLIBCXX_ok], [
1017         #include <features.h>
1018         #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1019           _GLIBCXX_ok
1020         #endif
1021         ], enable_clocale_flag=gnu, enable_clocale_flag=generic)
1022
1023         # Test for bugs early in glibc-2.2.x series
1024           if test x$enable_clocale_flag = xgnu; then
1025           AC_TRY_RUN([
1026           #define _GNU_SOURCE 1
1027           #include <locale.h>
1028           #include <string.h>
1029           #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
1030           extern __typeof(newlocale) __newlocale;
1031           extern __typeof(duplocale) __duplocale;
1032           extern __typeof(strcoll_l) __strcoll_l;
1033           #endif
1034           int main()
1035           {
1036               const char __one[] = "Äuglein Augmen";
1037               const char __two[] = "Äuglein";
1038               int i;
1039               int j;
1040               __locale_t        loc;
1041                __locale_t        loc_dup;
1042               loc = __newlocale(1 << LC_ALL, "de_DE", 0);
1043               loc_dup = __duplocale(loc);
1044               i = __strcoll_l(__one, __two, loc);
1045               j = __strcoll_l(__one, __two, loc_dup);
1046               return 0;
1047           }
1048           ],
1049           [enable_clocale_flag=gnu],[enable_clocale_flag=generic],
1050           [enable_clocale_flag=generic])
1051           fi
1052
1053         # ... at some point put __strxfrm_l tests in as well.
1054         ;;
1055       *)
1056         enable_clocale_flag=generic
1057         ;;
1058     esac
1059   fi
1060
1061   # Deal with gettext issues.  Default to not using it (=no) until we detect
1062   # support for it later.  Let the user turn it off via --e/d, but let that
1063   # default to on for easier handling.
1064   USE_NLS=no
1065   AC_ARG_ENABLE(nls,
1066     AC_HELP_STRING([--enable-nls],[use Native Language Support (default)]),
1067     [],
1068     [enable_nls=yes])
1069
1070   # Set configure bits for specified locale package
1071   case ${enable_clocale_flag} in
1072     generic)
1073       AC_MSG_RESULT(generic)
1074
1075       CLOCALE_H=config/locale/generic/c_locale.h
1076       CLOCALE_CC=config/locale/generic/c_locale.cc
1077       CCODECVT_H=config/locale/generic/codecvt_specializations.h
1078       CCODECVT_CC=config/locale/generic/codecvt_members.cc
1079       CCOLLATE_CC=config/locale/generic/collate_members.cc
1080       CCTYPE_CC=config/locale/generic/ctype_members.cc
1081       CMESSAGES_H=config/locale/generic/messages_members.h
1082       CMESSAGES_CC=config/locale/generic/messages_members.cc
1083       CMONEY_CC=config/locale/generic/monetary_members.cc
1084       CNUMERIC_CC=config/locale/generic/numeric_members.cc
1085       CTIME_H=config/locale/generic/time_members.h
1086       CTIME_CC=config/locale/generic/time_members.cc
1087       CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1088       ;;
1089     gnu)
1090       AC_MSG_RESULT(gnu)
1091
1092       # Declare intention to use gettext, and add support for specific
1093       # languages.
1094       # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT
1095       ALL_LINGUAS="de fr"
1096
1097       # Don't call AM-GNU-GETTEXT here. Instead, assume glibc.
1098       AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no)
1099       if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then
1100         USE_NLS=yes
1101       fi
1102       # Export the build objects.
1103       for ling in $ALL_LINGUAS; do \
1104         glibcxx_MOFILES="$glibcxx_MOFILES $ling.mo"; \
1105         glibcxx_POFILES="$glibcxx_POFILES $ling.po"; \
1106       done
1107       AC_SUBST(glibcxx_MOFILES)
1108       AC_SUBST(glibcxx_POFILES)
1109
1110       CLOCALE_H=config/locale/gnu/c_locale.h
1111       CLOCALE_CC=config/locale/gnu/c_locale.cc
1112       CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1113       CCODECVT_CC=config/locale/gnu/codecvt_members.cc
1114       CCOLLATE_CC=config/locale/gnu/collate_members.cc
1115       CCTYPE_CC=config/locale/gnu/ctype_members.cc
1116       CMESSAGES_H=config/locale/gnu/messages_members.h
1117       CMESSAGES_CC=config/locale/gnu/messages_members.cc
1118       CMONEY_CC=config/locale/gnu/monetary_members.cc
1119       CNUMERIC_CC=config/locale/gnu/numeric_members.cc
1120       CTIME_H=config/locale/gnu/time_members.h
1121       CTIME_CC=config/locale/gnu/time_members.cc
1122       CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h
1123       ;;
1124     ieee_1003.1-2001)
1125       AC_MSG_RESULT(IEEE 1003.1)
1126
1127       CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h
1128       CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc
1129       CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1130       CCODECVT_CC=config/locale/generic/codecvt_members.cc
1131       CCOLLATE_CC=config/locale/generic/collate_members.cc
1132       CCTYPE_CC=config/locale/generic/ctype_members.cc
1133       CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h
1134       CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc
1135       CMONEY_CC=config/locale/generic/monetary_members.cc
1136       CNUMERIC_CC=config/locale/generic/numeric_members.cc
1137       CTIME_H=config/locale/generic/time_members.h
1138       CTIME_CC=config/locale/generic/time_members.cc
1139       CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1140       ;;
1141   esac
1142
1143   # This is where the testsuite looks for locale catalogs, using the
1144   # -DLOCALEDIR define during testsuite compilation.
1145   glibcxx_localedir=${glibcxx_builddir}/po/share/locale
1146   AC_SUBST(glibcxx_localedir)
1147
1148   # A standalone libintl (e.g., GNU libintl) may be in use.
1149   if test $USE_NLS = yes; then
1150     AC_CHECK_HEADERS([libintl.h], [], USE_NLS=no)
1151     AC_SEARCH_LIBS(gettext, intl, [], USE_NLS=no)
1152   fi
1153   if test $USE_NLS = yes; then
1154     AC_DEFINE(_GLIBCXX_USE_NLS)
1155   fi
1156
1157   AC_SUBST(USE_NLS)
1158   AC_SUBST(CLOCALE_H)
1159   AC_SUBST(CCODECVT_H)
1160   AC_SUBST(CMESSAGES_H)
1161   AC_SUBST(CCODECVT_CC)
1162   AC_SUBST(CCOLLATE_CC)
1163   AC_SUBST(CCTYPE_CC)
1164   AC_SUBST(CMESSAGES_CC)
1165   AC_SUBST(CMONEY_CC)
1166   AC_SUBST(CNUMERIC_CC)
1167   AC_SUBST(CTIME_H)
1168   AC_SUBST(CTIME_CC)
1169   AC_SUBST(CLOCALE_CC)
1170   AC_SUBST(CLOCALE_INTERNAL_H)
1171 ])
1172
1173
1174 dnl
1175 dnl Check for whether the Boost-derived checks should be turned on.
1176 dnl
1177 dnl --enable-concept-checks turns them on.
1178 dnl --disable-concept-checks leaves them off.
1179 dnl  +  Usage:  GLIBCXX_ENABLE_CONCEPT_CHECKS[(DEFAULT)]
1180 dnl       Where DEFAULT is either `yes' or `no'.
1181 dnl
1182 AC_DEFUN(GLIBCXX_ENABLE_CONCEPT_CHECKS, [
1183   GLIBCXX_ENABLE(concept-checks,$1,,[use Boost-derived template checks])
1184   if test $enable_concept_checks = yes; then
1185     AC_DEFINE(_GLIBCXX_CONCEPT_CHECKS)
1186   fi
1187 ])
1188
1189
1190 dnl
1191 dnl Check for which I/O library to use:  stdio, or something specific.
1192 dnl
1193 dnl Default is stdio.
1194 dnl
1195 AC_DEFUN(GLIBCXX_ENABLE_CSTDIO, [
1196   AC_MSG_CHECKING([for underlying I/O to use])
1197   GLIBCXX_ENABLE(cstdio,stdio,[=PACKAGE],
1198     [use target-specific I/O package], [permit stdio])
1199
1200   # Now that libio has been removed, you can have any color you want as long
1201   # as it's black.  This is one big no-op until other packages are added, but
1202   # showing the framework never hurts.
1203   case ${enable_cstdio} in
1204     stdio)
1205       CSTDIO_H=config/io/c_io_stdio.h
1206       BASIC_FILE_H=config/io/basic_file_stdio.h
1207       BASIC_FILE_CC=config/io/basic_file_stdio.cc
1208       AC_MSG_RESULT(stdio)
1209       ;;
1210   esac
1211
1212   AC_SUBST(CSTDIO_H)
1213   AC_SUBST(BASIC_FILE_H)
1214   AC_SUBST(BASIC_FILE_CC)
1215 ])
1216
1217
1218 dnl
1219 dnl Check for "unusual" flags to pass to the compiler while building.
1220 dnl
1221 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1222 dnl     experimental flags such as -fpch, -fIMI, -Dfloat=char, etc.
1223 dnl --disable-cxx-flags passes nothing.
1224 dnl  +  See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
1225 dnl         http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
1226 dnl         http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
1227 dnl  +  Usage:  GLIBCXX_ENABLE_CXX_FLAGS(default flags)
1228 dnl       If "default flags" is an empty string, the effect is the same
1229 dnl       as --disable or --enable=no.
1230 dnl
1231 AC_DEFUN(GLIBCXX_ENABLE_CXX_FLAGS, [dnl
1232   AC_MSG_CHECKING([for extra compiler flags for building])
1233   GLIBCXX_ENABLE(cxx-flags,$1,[=FLAGS],
1234     [pass compiler FLAGS when building library],
1235     [case "x$enable_cxx_flags" in
1236       xno | x)   enable_cxx_flags= ;;
1237       x-*)       ;;
1238       *)         AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;;
1239      esac])
1240
1241   # Run through flags (either default or command-line) and set anything
1242   # extra (e.g., #defines) that must accompany particular g++ options.
1243   if test -n "$enable_cxx_flags"; then
1244     for f in $enable_cxx_flags; do
1245       case "$f" in
1246         -fhonor-std)  ;;
1247         -*)  ;;
1248         *)   # and we're trying to pass /what/ exactly?
1249              AC_MSG_ERROR([compiler flags start with a -]) ;;
1250       esac
1251     done
1252   fi
1253
1254   EXTRA_CXX_FLAGS="$enable_cxx_flags"
1255   AC_MSG_RESULT($EXTRA_CXX_FLAGS)
1256   AC_SUBST(EXTRA_CXX_FLAGS)
1257 ])
1258
1259
1260 dnl
1261 dnl Check for wide character support.  Has the same effect as the option
1262 dnl in gcc's configure, but in a form that autoconf can mess with.
1263 dnl
1264 dnl --enable-c-mbchar requests all the wchar_t stuff.
1265 dnl --disable-c-mbchar doesn't.
1266 dnl  +  Usage:  GLIBCXX_ENABLE_C_MBCHAR[(DEFAULT)]
1267 dnl       Where DEFAULT is either `yes' or `no'.
1268 dnl
1269 AC_DEFUN(GLIBCXX_ENABLE_C_MBCHAR, [
1270   GLIBCXX_ENABLE(c-mbchar,$1,,[enable multibyte (wide) characters])
1271   # Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1272 ])
1273
1274
1275 dnl
1276 dnl Check to see if debugging libraries are to be built.
1277 dnl
1278 dnl --enable-libstdcxx-debug
1279 dnl builds a separate set of debugging libraries in addition to the
1280 dnl normal (shared, static) libstdc++ binaries.
1281 dnl
1282 dnl --disable-libstdcxx-debug
1283 dnl builds only one (non-debug) version of libstdc++.
1284 dnl
1285 dnl --enable-libstdcxx-debug-flags=FLAGS
1286 dnl iff --enable-debug == yes, then use FLAGS to build the debug library.
1287 dnl
1288 dnl  +  Usage:  GLIBCXX_ENABLE_DEBUG[(DEFAULT)]
1289 dnl       Where DEFAULT is either `yes' or `no'.
1290 dnl
1291 AC_DEFUN(GLIBCXX_ENABLE_DEBUG, [
1292   AC_MSG_CHECKING([for additional debug build])
1293   GLIBCXX_ENABLE(libstdcxx-debug,$1,,[build extra debug library])
1294   AC_MSG_RESULT($enable_libstdcxx_debug)
1295   GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_DEBUG, test $enable_libstdcxx_debug = yes)
1296 ])
1297
1298
1299 dnl
1300 dnl Check for explicit debug flags.
1301 dnl
1302 dnl --enable-libstdcxx-debug-flags='-O1'
1303 dnl is a general method for passing flags to be used when
1304 dnl building debug libraries with --enable-debug.
1305 dnl
1306 dnl --disable-libstdcxx-debug-flags does nothing.
1307 dnl  +  Usage:  GLIBCXX_ENABLE_DEBUG_FLAGS(default flags)
1308 dnl       If "default flags" is an empty string, the effect is the same
1309 dnl       as --disable or --enable=no.
1310 dnl
1311 AC_DEFUN(GLIBCXX_ENABLE_DEBUG_FLAGS, [
1312   GLIBCXX_ENABLE(libstdcxx-debug-flags,[$1],[=FLAGS],
1313     [pass compiler FLAGS when building debug library],
1314     [case "x$enable_libstdcxx_debug_flags" in
1315       xno | x)    enable_libstdcxx_debug_flags= ;;
1316       x-*)        ;;
1317       *)          AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;;
1318      esac])
1319
1320   # Option parsed, now set things appropriately
1321   DEBUG_FLAGS="$enable_libstdcxx_debug_flags"
1322   AC_SUBST(DEBUG_FLAGS)
1323
1324   AC_MSG_NOTICE([Debug build flags set to $DEBUG_FLAGS])
1325 ])
1326
1327
1328 dnl
1329 dnl Check if the user only wants a freestanding library implementation.
1330 dnl
1331 dnl --disable-hosted-libstdcxx will turn off most of the library build,
1332 dnl installing only the headers required by [17.4.1.3] and the language
1333 dnl support library.  More than that will be built (to keep the Makefiles
1334 dnl conveniently clean), but not installed.
1335 dnl
1336 dnl Sets:
1337 dnl  is_hosted  (yes/no)
1338 dnl
1339 dnl Defines:
1340 dnl  _GLIBCXX_HOSTED   (always defined, either to 1 or 0)
1341 dnl
1342 AC_DEFUN(GLIBCXX_ENABLE_HOSTED, [
1343   AC_ARG_ENABLE([hosted-libstdcxx],
1344     AC_HELP_STRING([--disable-hosted-libstdcxx],
1345                    [only build freestanding C++ runtime support]),,
1346     [enable_hosted_libstdcxx=yes])
1347   if test "$enable_hosted_libstdcxx" = no; then
1348     AC_MSG_NOTICE([Only freestanding libraries will be built])
1349     is_hosted=no
1350     hosted_define=0
1351     enable_abi_check=no
1352     enable_libstdcxx_pch=no
1353   else
1354     is_hosted=yes
1355     hosted_define=1
1356   fi
1357   GLIBCXX_CONDITIONAL(GLIBCXX_HOSTED, test $is_hosted = yes)
1358   AC_DEFINE_UNQUOTED(_GLIBCXX_HOSTED, $hosted_define,
1359     [Define to 1 if a full hosted library is built, or 0 if freestanding.])
1360 ])
1361
1362
1363 dnl
1364 dnl Check for template specializations for the 'long long' type extension.
1365 dnl The result determines only whether 'long long' I/O is enabled; things
1366 dnl like numeric_limits<> specializations are always available.
1367 dnl
1368 dnl --enable-long-long defines _GLIBCXX_USE_LONG_LONG
1369 dnl --disable-long-long leaves _GLIBCXX_USE_LONG_LONG undefined
1370 dnl  +  Usage:  GLIBCXX_ENABLE_LONG_LONG[(DEFAULT)]
1371 dnl       Where DEFAULT is either `yes' or `no'.
1372 dnl  +  If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1373 dnl
1374 AC_DEFUN(GLIBCXX_ENABLE_LONG_LONG, [
1375   GLIBCXX_ENABLE(long-long,$1,,[enables I/O support for 'long long'])
1376
1377   AC_LANG_SAVE
1378   AC_LANG_CPLUSPLUS
1379
1380   AC_MSG_CHECKING([for enabled long long I/O support])
1381   # iostreams require strtoll, strtoull to compile
1382   AC_TRY_COMPILE([#include <stdlib.h>],
1383                  [char* tmp; strtoll("gnu", &tmp, 10);],,[enable_long_long=no])
1384   AC_TRY_COMPILE([#include <stdlib.h>],
1385                  [char* tmp; strtoull("gnu", &tmp, 10);],,[enable_long_long=no])
1386
1387   # Option parsed, now set things appropriately
1388   if test $enable_long_long = yes; then
1389     AC_DEFINE(_GLIBCXX_USE_LONG_LONG)
1390   fi
1391   AC_MSG_RESULT($enable_long_long)
1392
1393   AC_LANG_RESTORE
1394 ])
1395
1396
1397 dnl
1398 dnl Check to see if building and using a C++ precompiled header can be done.
1399 dnl
1400 dnl --enable-libstdcxx-pch=yes
1401 dnl default, this shows intent to use stdc++.h.gch If it looks like it
1402 dnl may work, after some light-hearted attempts to puzzle out compiler
1403 dnl support, flip bits on in include/Makefile.am
1404 dnl
1405 dnl --disable-libstdcxx-pch
1406 dnl turns off attempts to use or build stdc++.h.gch.
1407 dnl
1408 dnl Substs:
1409 dnl  glibcxx_PCHFLAGS
1410 dnl
1411 AC_DEFUN(GLIBCXX_ENABLE_PCH, [
1412   AC_MSG_CHECKING([for enabled PCH])
1413   GLIBCXX_ENABLE(libstdcxx-pch,$1,,[build pre-compiled libstdc++ headers])
1414   AC_MSG_RESULT([$enable_libstdcxx_pch])
1415
1416   if test $enable_libstdcxx_pch = yes; then
1417     AC_CACHE_CHECK([for compiler with PCH support],
1418       [glibcxx_cv_prog_CXX_pch],
1419       [ac_save_CXXFLAGS="$CXXFLAGS"
1420        CXXFLAGS="$CXXFLAGS -Werror -Winvalid-pch -Wno-deprecated"
1421        AC_LANG_SAVE
1422        AC_LANG_CPLUSPLUS
1423        echo '#include <math.h>' > conftest.h
1424        if $CXX $CXXFLAGS $CPPFLAGS -x c++-header conftest.h \
1425                           -o conftest.h.gch 1>&5 2>&1 &&
1426                 echo '#error "pch failed"' > conftest.h &&
1427           echo '#include "conftest.h"' > conftest.cc &&
1428                $CXX -c $CXXFLAGS $CPPFLAGS conftest.cc 1>&5 2>&1 ;
1429        then
1430          glibcxx_cv_prog_CXX_pch=yes
1431        else
1432          glibcxx_cv_prog_CXX_pch=no
1433        fi
1434        rm -f conftest*
1435        CXXFLAGS=$ac_save_CXXFLAGS
1436        AC_LANG_RESTORE
1437       ])
1438     enable_libstdcxx_pch=$glibcxx_cv_prog_CXX_pch
1439   fi
1440
1441   GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_PCH, test $enable_libstdcxx_pch = yes)
1442   if test $enable_libstdcxx_pch = yes; then
1443     glibcxx_PCHFLAGS="-include bits/stdc++.h"
1444   else
1445     glibcxx_PCHFLAGS=""
1446   fi
1447   AC_SUBST(glibcxx_PCHFLAGS)
1448 ])
1449
1450
1451 dnl
1452 dnl Check for exception handling support.  If an explicit enable/disable
1453 dnl sjlj exceptions is given, we don't have to detect.  Otherwise the
1454 dnl target may or may not support call frame exceptions.
1455 dnl
1456 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1457 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1458 dnl Neither one forces an attempt at detection.
1459 dnl
1460 dnl Defines:
1461 dnl  _GLIBCXX_SJLJ_EXCEPTIONS if the compiler is configured for it
1462 dnl
1463 AC_DEFUN(GLIBCXX_ENABLE_SJLJ_EXCEPTIONS, [
1464   AC_MSG_CHECKING([for exception model to use])
1465   AC_LANG_SAVE
1466   AC_LANG_CPLUSPLUS
1467   GLIBCXX_ENABLE(sjlj-exceptions,auto,,
1468     [force use of builtin_setjmp for exceptions],
1469     [permit yes|no|auto])
1470
1471   if test $enable_sjlj_exceptions = auto; then
1472     # Botheration.  Now we've got to detect the exception model.  Link tests
1473     # against libgcc.a are problematic since we've not been given proper -L
1474     # bits for single-tree newlib and libgloss.
1475     #
1476     # Fake what AC_TRY_COMPILE does.  XXX Look at redoing this new-style.
1477     cat > conftest.$ac_ext << EOF
1478 [#]line __oline__ "configure"
1479 struct S { ~S(); };
1480 void bar();
1481 void foo()
1482 {
1483   S s;
1484   bar();
1485 }
1486 EOF
1487     old_CXXFLAGS="$CXXFLAGS"
1488     CXXFLAGS=-S
1489     if AC_TRY_EVAL(ac_compile); then
1490       if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1491         enable_sjlj_exceptions=yes
1492       elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1493         enable_sjlj_exceptions=no
1494       fi
1495     fi
1496     CXXFLAGS="$old_CXXFLAGS"
1497     rm -f conftest*
1498   fi
1499
1500   # This is a tad weird, for hysterical raisins.  We have to map enable/disable
1501   # to two different models.
1502   case $enable_sjlj_exceptions in
1503     yes)
1504       AC_DEFINE(_GLIBCXX_SJLJ_EXCEPTIONS, 1,
1505         [Define if the compiler is configured for setjmp/longjmp exceptions.])
1506       ac_exception_model_name=sjlj
1507       ;;
1508     no)
1509       ac_exception_model_name="call frame"
1510       ;;
1511     *)
1512       AC_MSG_ERROR([unable to detect exception model])
1513       ;;
1514   esac
1515  AC_LANG_RESTORE
1516  AC_MSG_RESULT($ac_exception_model_name)
1517 ])
1518
1519
1520 dnl
1521 dnl Add version tags to symbols in shared library (or not), additionally
1522 dnl marking other symbols as private/local (or not).
1523 dnl
1524 dnl --enable-symvers=style adds a version script to the linker call when
1525 dnl       creating the shared library.  The choice of version script is
1526 dnl       controlled by 'style'.
1527 dnl --disable-symvers does not.
1528 dnl  +  Usage:  GLIBCXX_ENABLE_SYMVERS[(DEFAULT)]
1529 dnl       Where DEFAULT is either 'yes' or 'no'.  Passing `yes' tries to
1530 dnl       choose a default style based on linker characteristics.  Passing
1531 dnl       'no' disables versioning.
1532 dnl
1533 AC_DEFUN(GLIBCXX_ENABLE_SYMVERS, [
1534
1535 GLIBCXX_ENABLE(symvers,$1,[=STYLE],
1536   [enables symbol versioning of the shared library],
1537   [permit yes|no|gnu])
1538
1539 # If we never went through the GLIBCXX_CHECK_LINKER_FEATURES macro, then we
1540 # don't know enough about $LD to do tricks...
1541 AC_REQUIRE([GLIBCXX_CHECK_LINKER_FEATURES])
1542 # FIXME  The following test is too strict, in theory.
1543 if test $enable_shared = no ||
1544         test "x$LD" = x ||
1545         test x$glibcxx_gnu_ld_version = x; then
1546   enable_symvers=no
1547 fi
1548
1549 # Check to see if libgcc_s exists, indicating that shared libgcc is possible.
1550 if test $enable_symvers != no; then
1551   AC_MSG_CHECKING([for shared libgcc])
1552   ac_save_CFLAGS="$CFLAGS"
1553   CFLAGS=' -lgcc_s'
1554   AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes, glibcxx_shared_libgcc=no)
1555   CFLAGS="$ac_save_CFLAGS"
1556   AC_MSG_RESULT($glibcxx_shared_libgcc)
1557 fi
1558
1559 # For GNU ld, we need at least this version.  The format is described in
1560 # GLIBCXX_CHECK_LINKER_FEATURES above.
1561 glibcxx_min_gnu_ld_version=21400
1562 # XXXXXXXXXXX glibcxx_gnu_ld_version=21390
1563
1564 # Check to see if unspecified "yes" value can win, given results above.
1565 # Change "yes" into either "no" or a style name.
1566 if test $enable_symvers = yes; then
1567   if test $with_gnu_ld = yes &&
1568      test $glibcxx_shared_libgcc = yes;
1569   then
1570     if test $glibcxx_gnu_ld_version -ge $glibcxx_min_gnu_ld_version ; then
1571       enable_symvers=gnu
1572     else
1573       # The right tools, the right setup, but too old.  Fallbacks?
1574       AC_MSG_WARN(=== Linker version $glibcxx_gnu_ld_version is too old for)
1575       AC_MSG_WARN(=== full symbol versioning support in this release of GCC.)
1576       AC_MSG_WARN(=== You would need to upgrade your binutils to version)
1577       AC_MSG_WARN(=== $glibcxx_min_gnu_ld_version or later and rebuild GCC.)
1578       if test $glibcxx_gnu_ld_version -ge 21200 ; then
1579         # Globbing fix is present, proper block support is not.
1580         dnl AC_MSG_WARN([=== Dude, you are soooo close.  Maybe we can fake it.])
1581         dnl enable_symvers=???
1582         AC_MSG_WARN([=== Symbol versioning will be disabled.])
1583         enable_symvers=no
1584       else
1585         # 2.11 or older.
1586         AC_MSG_WARN([=== Symbol versioning will be disabled.])
1587         enable_symvers=no
1588       fi
1589     fi
1590   else
1591     # just fail for now
1592     AC_MSG_WARN([=== You have requested some kind of symbol versioning, but])
1593     AC_MSG_WARN([=== either you are not using a supported linker, or you are])
1594     AC_MSG_WARN([=== not building a shared libgcc_s (which is required).])
1595     AC_MSG_WARN([=== Symbol versioning will be disabled.])
1596     enable_symvers=no
1597   fi
1598 fi
1599
1600 # Everything parsed; figure out what file to use.
1601 case $enable_symvers in
1602   no)
1603     SYMVER_MAP=config/linker-map.dummy
1604     ;;
1605   gnu)
1606     SYMVER_MAP=config/linker-map.gnu
1607     AC_DEFINE(_GLIBCXX_SYMVER)
1608     ;;
1609 esac
1610
1611 AC_SUBST(SYMVER_MAP)
1612 AC_SUBST(port_specific_symbol_files)
1613 GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_VERSIONED_SHLIB, test $enable_symvers != no)
1614 AC_MSG_NOTICE(versioning on shared library symbols is $enable_symvers)
1615 ])
1616
1617
1618 dnl
1619 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
1620 dnl We must stage the required headers so that they will be installed
1621 dnl with the library (unlike libgcc, the STL implementation is provided
1622 dnl solely within headers).  Since we must not inject random user-space
1623 dnl macro names into user-provided C++ code, we first stage into <file>-in
1624 dnl and process to <file> with an output command.  The reason for a two-
1625 dnl stage process here is to correctly handle $srcdir!=$objdir without
1626 dnl having to write complex code (the sed commands to clean the macro
1627 dnl namespace are complex and fragile enough as it is).  We must also
1628 dnl add a relative path so that -I- is supported properly.
1629 dnl
1630 dnl Substs:
1631 dnl  glibcxx_thread_h
1632 dnl
1633 dnl Defines:
1634 dnl  HAVE_GTHR_DEFAULT
1635 dnl  _GLIBCXX_SUPPORTS_WEAK
1636 dnl
1637 AC_DEFUN(GLIBCXX_ENABLE_THREADS, [
1638   AC_MSG_CHECKING([for thread model used by GCC])
1639   target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
1640   AC_MSG_RESULT([$target_thread_file])
1641
1642   if test $target_thread_file != single; then
1643     AC_DEFINE(HAVE_GTHR_DEFAULT)
1644     AC_DEFINE(_GLIBCXX_SUPPORTS_WEAK, __GXX_WEAK__)
1645   fi
1646
1647   glibcxx_thread_h=gthr-$target_thread_file.h
1648   AC_SUBST(glibcxx_thread_h)
1649 ])
1650
1651
1652 # Check whether LC_MESSAGES is available in <locale.h>.
1653 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1654 #
1655 # This file file be copied and used freely without restrictions.  It can
1656 # be used in projects which are not available under the GNU Public License
1657 # but which still want to provide support for the GNU gettext functionality.
1658 # Please note that the actual code is *not* freely available.
1659
1660 # serial 1
1661 AC_DEFUN(AC_LC_MESSAGES, [
1662   AC_CHECK_HEADER(locale.h, [
1663     AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1664       [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1665        ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1666     if test $ac_cv_val_LC_MESSAGES = yes; then
1667       AC_DEFINE(HAVE_LC_MESSAGES)
1668     fi
1669   ])
1670 ])
1671
1672
1673 sinclude([../libtool.m4])
1674 dnl The lines below arrange for aclocal not to bring an installed
1675 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1676 dnl add a definition of LIBTOOL to Makefile.in.
1677 ifelse(,,,[AC_SUBST(LIBTOOL)
1678 AC_DEFUN([AM_PROG_LIBTOOL])
1679 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1680 AC_DEFUN([AC_PROG_LD])
1681 ])
1682
1683 dnl vim:et:ts=2:sw=2
1684
1685 # AM_CONDITIONAL                                              -*- Autoconf -*-
1686
1687 # Copyright 1997, 2000, 2001 Free Software Foundation, Inc.
1688
1689 # This program is free software; you can redistribute it and/or modify
1690 # it under the terms of the GNU General Public License as published by
1691 # the Free Software Foundation; either version 2, or (at your option)
1692 # any later version.
1693
1694 # This program is distributed in the hope that it will be useful,
1695 # but WITHOUT ANY WARRANTY; without even the implied warranty of
1696 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
1697 # GNU General Public License for more details.
1698
1699 # You should have received a copy of the GNU General Public License
1700 # along with this program; if not, write to the Free Software
1701 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
1702 # 02111-1307, USA.
1703
1704 # serial 5
1705
1706 AC_PREREQ(2.52)
1707
1708 # AM_CONDITIONAL(NAME, SHELL-CONDITION)
1709 # -------------------------------------
1710 # Define a conditional.
1711 AC_DEFUN([AM_CONDITIONAL],
1712 [ifelse([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
1713         [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
1714 AC_SUBST([$1_TRUE])
1715 AC_SUBST([$1_FALSE])
1716 if $2; then
1717   $1_TRUE=
1718   $1_FALSE='#'
1719 else
1720   $1_TRUE='#'
1721   $1_FALSE=
1722 fi
1723 AC_CONFIG_COMMANDS_PRE(
1724 [if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
1725   AC_MSG_ERROR([conditional "$1" was never defined.
1726 Usually this means the macro was only invoked conditionally.])
1727 fi])])
1728
1729 # Copyright 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
1730
1731 # This program is free software; you can redistribute it and/or modify
1732 # it under the terms of the GNU General Public License as published by
1733 # the Free Software Foundation; either version 2, or (at your option)
1734 # any later version.
1735
1736 # This program is distributed in the hope that it will be useful,
1737 # but WITHOUT ANY WARRANTY; without even the implied warranty of
1738 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
1739 # GNU General Public License for more details.
1740
1741 # You should have received a copy of the GNU General Public License
1742 # along with this program; if not, write to the Free Software
1743 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
1744 # 02111-1307, USA.
1745
1746 # serial 3
1747
1748 # AM_ENABLE_MULTILIB([MAKEFILE], [REL-TO-TOP-SRCDIR])
1749 # ---------------------------------------------------
1750 # Add --enable-multilib to configure.
1751 AC_DEFUN([AM_ENABLE_MULTILIB],
1752 [# Default to --enable-multilib
1753 AC_ARG_ENABLE(multilib,
1754 [  --enable-multilib         build many library versions (default)],
1755 [case "$enableval" in
1756   yes) multilib=yes ;;
1757   no)  multilib=no ;;
1758   *)   AC_MSG_ERROR([bad value $enableval for multilib option]) ;;
1759  esac],
1760               [multilib=yes])
1761
1762 # We may get other options which we leave undocumented:
1763 # --with-target-subdir, --with-multisrctop, --with-multisubdir
1764 # See config-ml.in if you want the gory details.
1765
1766 if test "$srcdir" = "."; then
1767   if test "$with_target_subdir" != "."; then
1768     multi_basedir="$srcdir/$with_multisrctop../$2"
1769   else
1770     multi_basedir="$srcdir/$with_multisrctop$2"
1771   fi
1772 else
1773   multi_basedir="$srcdir/$2"
1774 fi
1775 AC_SUBST(multi_basedir)
1776
1777 AC_OUTPUT_COMMANDS([
1778 # Only add multilib support code if we just rebuilt the top-level
1779 # Makefile.
1780 case " $CONFIG_FILES " in
1781  *" ]m4_default([$1],Makefile)[ "*)
1782    ac_file=]m4_default([$1],Makefile)[ . ${multi_basedir}/config-ml.in
1783    ;;
1784 esac],
1785                    [
1786 srcdir="$srcdir"
1787 host="$host"
1788 target="$target"
1789 with_multisubdir="$with_multisubdir"
1790 with_multisrctop="$with_multisrctop"
1791 with_target_subdir="$with_target_subdir"
1792 ac_configure_args="${multilib_arg} ${ac_configure_args}"
1793 multi_basedir="$multi_basedir"
1794 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
1795 CC="$CC"])])dnl
1796
1797 # Add --enable-maintainer-mode option to configure.
1798 # From Jim Meyering
1799
1800 # Copyright 1996, 1998, 2000, 2001, 2002  Free Software Foundation, Inc.
1801
1802 # This program is free software; you can redistribute it and/or modify
1803 # it under the terms of the GNU General Public License as published by
1804 # the Free Software Foundation; either version 2, or (at your option)
1805 # any later version.
1806
1807 # This program is distributed in the hope that it will be useful,
1808 # but WITHOUT ANY WARRANTY; without even the implied warranty of
1809 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
1810 # GNU General Public License for more details.
1811
1812 # You should have received a copy of the GNU General Public License
1813 # along with this program; if not, write to the Free Software
1814 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
1815 # 02111-1307, USA.
1816
1817 # serial 2
1818
1819 AC_DEFUN([AM_MAINTAINER_MODE],
1820 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1821   dnl maintainer-mode is disabled by default
1822   AC_ARG_ENABLE(maintainer-mode,
1823 [  --enable-maintainer-mode enable make rules and dependencies not useful
1824                           (and sometimes confusing) to the casual installer],
1825       USE_MAINTAINER_MODE=$enableval,
1826       USE_MAINTAINER_MODE=no)
1827   AC_MSG_RESULT([$USE_MAINTAINER_MODE])
1828   AM_CONDITIONAL(MAINTAINER_MODE, [test $USE_MAINTAINER_MODE = yes])
1829   MAINT=$MAINTAINER_MODE_TRUE
1830   AC_SUBST(MAINT)dnl
1831 ]
1832 )
1833
1834 AU_DEFUN([jm_MAINTAINER_MODE], [AM_MAINTAINER_MODE])
1835
1836 # Do all the work for Automake.                            -*- Autoconf -*-
1837
1838 # This macro actually does too much some checks are only needed if
1839 # your package does certain things.  But this isn't really a big deal.
1840
1841 # Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
1842 # Free Software Foundation, Inc.
1843
1844 # This program is free software; you can redistribute it and/or modify
1845 # it under the terms of the GNU General Public License as published by
1846 # the Free Software Foundation; either version 2, or (at your option)
1847 # any later version.
1848
1849 # This program is distributed in the hope that it will be useful,
1850 # but WITHOUT ANY WARRANTY; without even the implied warranty of
1851 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
1852 # GNU General Public License for more details.
1853
1854 # You should have received a copy of the GNU General Public License
1855 # along with this program; if not, write to the Free Software
1856 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
1857 # 02111-1307, USA.
1858
1859 # serial 10
1860
1861 AC_PREREQ([2.54])
1862
1863 # Autoconf 2.50 wants to disallow AM_ names.  We explicitly allow
1864 # the ones we care about.
1865 m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
1866
1867 # AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
1868 # AM_INIT_AUTOMAKE([OPTIONS])
1869 # -----------------------------------------------
1870 # The call with PACKAGE and VERSION arguments is the old style
1871 # call (pre autoconf-2.50), which is being phased out.  PACKAGE
1872 # and VERSION should now be passed to AC_INIT and removed from
1873 # the call to AM_INIT_AUTOMAKE.
1874 # We support both call styles for the transition.  After
1875 # the next Automake release, Autoconf can make the AC_INIT
1876 # arguments mandatory, and then we can depend on a new Autoconf
1877 # release and drop the old call support.
1878 AC_DEFUN([AM_INIT_AUTOMAKE],
1879 [AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
1880  AC_REQUIRE([AC_PROG_INSTALL])dnl
1881 # test to see if srcdir already configured
1882 if test "`cd $srcdir && pwd`" != "`pwd`" &&
1883    test -f $srcdir/config.status; then
1884   AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
1885 fi
1886
1887 # test whether we have cygpath
1888 if test -z "$CYGPATH_W"; then
1889   if (cygpath --version) >/dev/null 2>/dev/null; then
1890     CYGPATH_W='cygpath -w'
1891   else
1892     CYGPATH_W=echo
1893   fi
1894 fi
1895 AC_SUBST([CYGPATH_W])
1896
1897 # Define the identity of the package.
1898 dnl Distinguish between old-style and new-style calls.
1899 m4_ifval([$2],
1900 [m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
1901  AC_SUBST([PACKAGE], [$1])dnl
1902  AC_SUBST([VERSION], [$2])],
1903 [_AM_SET_OPTIONS([$1])dnl
1904  AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
1905  AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
1906
1907 _AM_IF_OPTION([no-define],,
1908 [AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
1909  AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package])])dnl
1910
1911 # Some tools Automake needs.
1912 AC_REQUIRE([AM_SANITY_CHECK])dnl
1913 AC_REQUIRE([AC_ARG_PROGRAM])dnl
1914 AM_MISSING_PROG(ACLOCAL, aclocal-${am__api_version})
1915 AM_MISSING_PROG(AUTOCONF, autoconf)
1916 AM_MISSING_PROG(AUTOMAKE, automake-${am__api_version})
1917 AM_MISSING_PROG(AUTOHEADER, autoheader)
1918 AM_MISSING_PROG(MAKEINFO, makeinfo)
1919 AM_MISSING_PROG(AMTAR, tar)
1920 AM_PROG_INSTALL_SH
1921 AM_PROG_INSTALL_STRIP
1922 # We need awk for the "check" target.  The system "awk" is bad on
1923 # some platforms.
1924 AC_REQUIRE([AC_PROG_AWK])dnl
1925 AC_REQUIRE([AC_PROG_MAKE_SET])dnl
1926 AC_REQUIRE([AM_SET_LEADING_DOT])dnl
1927
1928 _AM_IF_OPTION([no-dependencies],,
1929 [AC_PROVIDE_IFELSE([AC_PROG_CC],
1930                   [_AM_DEPENDENCIES(CC)],
1931                   [define([AC_PROG_CC],
1932                           defn([AC_PROG_CC])[_AM_DEPENDENCIES(CC)])])dnl
1933 AC_PROVIDE_IFELSE([AC_PROG_CXX],
1934                   [_AM_DEPENDENCIES(CXX)],
1935                   [define([AC_PROG_CXX],
1936                           defn([AC_PROG_CXX])[_AM_DEPENDENCIES(CXX)])])dnl
1937 ])
1938 ])
1939
1940
1941 # When config.status generates a header, we must update the stamp-h file.
1942 # This file resides in the same directory as the config header
1943 # that is generated.  The stamp files are numbered to have different names.
1944
1945 # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
1946 # loop where config.status creates the headers, so we can generate
1947 # our stamp files there.
1948 AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
1949 [# Compute $1's index in $config_headers.
1950 _am_stamp_count=1
1951 for _am_header in $config_headers :; do
1952   case $_am_header in
1953     $1 | $1:* )
1954       break ;;
1955     * )
1956       _am_stamp_count=`expr $_am_stamp_count + 1` ;;
1957   esac
1958 done
1959 echo "timestamp for $1" >`AS_DIRNAME([$1])`/stamp-h[]$_am_stamp_count])
1960
1961 # Copyright 2002  Free Software Foundation, Inc.
1962
1963 # This program is free software; you can redistribute it and/or modify
1964 # it under the terms of the GNU General Public License as published by
1965 # the Free Software Foundation; either version 2, or (at your option)
1966 # any later version.
1967
1968 # This program is distributed in the hope that it will be useful,
1969 # but WITHOUT ANY WARRANTY; without even the implied warranty of
1970 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
1971 # GNU General Public License for more details.
1972
1973 # You should have received a copy of the GNU General Public License
1974 # along with this program; if not, write to the Free Software
1975 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
1976
1977 # AM_AUTOMAKE_VERSION(VERSION)
1978 # ----------------------------
1979 # Automake X.Y traces this macro to ensure aclocal.m4 has been
1980 # generated from the m4 files accompanying Automake X.Y.
1981 AC_DEFUN([AM_AUTOMAKE_VERSION],[am__api_version="1.7"])
1982
1983 # AM_SET_CURRENT_AUTOMAKE_VERSION
1984 # -------------------------------
1985 # Call AM_AUTOMAKE_VERSION so it can be traced.
1986 # This function is AC_REQUIREd by AC_INIT_AUTOMAKE.
1987 AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
1988          [AM_AUTOMAKE_VERSION([1.7.8])])
1989
1990 # Helper functions for option handling.                    -*- Autoconf -*-
1991
1992 # Copyright 2001, 2002  Free Software Foundation, Inc.
1993
1994 # This program is free software; you can redistribute it and/or modify
1995 # it under the terms of the GNU General Public License as published by
1996 # the Free Software Foundation; either version 2, or (at your option)
1997 # any later version.
1998
1999 # This program is distributed in the hope that it will be useful,
2000 # but WITHOUT ANY WARRANTY; without even the implied warranty of
2001 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
2002 # GNU General Public License for more details.
2003
2004 # You should have received a copy of the GNU General Public License
2005 # along with this program; if not, write to the Free Software
2006 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
2007 # 02111-1307, USA.
2008
2009 # serial 2
2010
2011 # _AM_MANGLE_OPTION(NAME)
2012 # -----------------------
2013 AC_DEFUN([_AM_MANGLE_OPTION],
2014 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
2015
2016 # _AM_SET_OPTION(NAME)
2017 # ------------------------------
2018 # Set option NAME.  Presently that only means defining a flag for this option.
2019 AC_DEFUN([_AM_SET_OPTION],
2020 [m4_define(_AM_MANGLE_OPTION([$1]), 1)])
2021
2022 # _AM_SET_OPTIONS(OPTIONS)
2023 # ----------------------------------
2024 # OPTIONS is a space-separated list of Automake options.
2025 AC_DEFUN([_AM_SET_OPTIONS],
2026 [AC_FOREACH([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
2027
2028 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
2029 # -------------------------------------------
2030 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
2031 AC_DEFUN([_AM_IF_OPTION],
2032 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
2033
2034 #
2035 # Check to make sure that the build environment is sane.
2036 #
2037
2038 # Copyright 1996, 1997, 2000, 2001 Free Software Foundation, Inc.
2039
2040 # This program is free software; you can redistribute it and/or modify
2041 # it under the terms of the GNU General Public License as published by
2042 # the Free Software Foundation; either version 2, or (at your option)
2043 # any later version.
2044
2045 # This program is distributed in the hope that it will be useful,
2046 # but WITHOUT ANY WARRANTY; without even the implied warranty of
2047 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
2048 # GNU General Public License for more details.
2049
2050 # You should have received a copy of the GNU General Public License
2051 # along with this program; if not, write to the Free Software
2052 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
2053 # 02111-1307, USA.
2054
2055 # serial 3
2056
2057 # AM_SANITY_CHECK
2058 # ---------------
2059 AC_DEFUN([AM_SANITY_CHECK],
2060 [AC_MSG_CHECKING([whether build environment is sane])
2061 # Just in case
2062 sleep 1
2063 echo timestamp > conftest.file
2064 # Do `set' in a subshell so we don't clobber the current shell's
2065 # arguments.  Must try -L first in case configure is actually a
2066 # symlink; some systems play weird games with the mod time of symlinks
2067 # (eg FreeBSD returns the mod time of the symlink's containing
2068 # directory).
2069 if (
2070    set X `ls -Lt $srcdir/configure conftest.file 2> /dev/null`
2071    if test "$[*]" = "X"; then
2072       # -L didn't work.
2073       set X `ls -t $srcdir/configure conftest.file`
2074    fi
2075    rm -f conftest.file
2076    if test "$[*]" != "X $srcdir/configure conftest.file" \
2077       && test "$[*]" != "X conftest.file $srcdir/configure"; then
2078
2079       # If neither matched, then we have a broken ls.  This can happen
2080       # if, for instance, CONFIG_SHELL is bash and it inherits a
2081       # broken ls alias from the environment.  This has actually
2082       # happened.  Such a system could not be considered "sane".
2083       AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
2084 alias in your environment])
2085    fi
2086
2087    test "$[2]" = conftest.file
2088    )
2089 then
2090    # Ok.
2091    :
2092 else
2093    AC_MSG_ERROR([newly created file is older than distributed files!
2094 Check your system clock])
2095 fi
2096 AC_MSG_RESULT(yes)])
2097
2098 #  -*- Autoconf -*-
2099
2100
2101 # Copyright 1997, 1999, 2000, 2001 Free Software Foundation, Inc.
2102
2103 # This program is free software; you can redistribute it and/or modify
2104 # it under the terms of the GNU General Public License as published by
2105 # the Free Software Foundation; either version 2, or (at your option)
2106 # any later version.
2107
2108 # This program is distributed in the hope that it will be useful,
2109 # but WITHOUT ANY WARRANTY; without even the implied warranty of
2110 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
2111 # GNU General Public License for more details.
2112
2113 # You should have received a copy of the GNU General Public License
2114 # along with this program; if not, write to the Free Software
2115 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
2116 # 02111-1307, USA.
2117
2118 # serial 3
2119
2120 # AM_MISSING_PROG(NAME, PROGRAM)
2121 # ------------------------------
2122 AC_DEFUN([AM_MISSING_PROG],
2123 [AC_REQUIRE([AM_MISSING_HAS_RUN])
2124 $1=${$1-"${am_missing_run}$2"}
2125 AC_SUBST($1)])
2126
2127
2128 # AM_MISSING_HAS_RUN
2129 # ------------------
2130 # Define MISSING if not defined so far and test if it supports --run.
2131 # If it does, set am_missing_run to use it, otherwise, to nothing.
2132 AC_DEFUN([AM_MISSING_HAS_RUN],
2133 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
2134 test x"${MISSING+set}" = xset || MISSING="\${SHELL} $am_aux_dir/missing"
2135 # Use eval to expand $SHELL
2136 if eval "$MISSING --run true"; then
2137   am_missing_run="$MISSING --run "
2138 else
2139   am_missing_run=
2140   AC_MSG_WARN([`missing' script is too old or missing])
2141 fi
2142 ])
2143
2144 # AM_AUX_DIR_EXPAND
2145
2146 # Copyright 2001 Free Software Foundation, Inc.
2147
2148 # This program is free software; you can redistribute it and/or modify
2149 # it under the terms of the GNU General Public License as published by
2150 # the Free Software Foundation; either version 2, or (at your option)
2151 # any later version.
2152
2153 # This program is distributed in the hope that it will be useful,
2154 # but WITHOUT ANY WARRANTY; without even the implied warranty of
2155 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
2156 # GNU General Public License for more details.
2157
2158 # You should have received a copy of the GNU General Public License
2159 # along with this program; if not, write to the Free Software
2160 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
2161 # 02111-1307, USA.
2162
2163 # For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
2164 # $ac_aux_dir to `$srcdir/foo'.  In other projects, it is set to
2165 # `$srcdir', `$srcdir/..', or `$srcdir/../..'.
2166 #
2167 # Of course, Automake must honor this variable whenever it calls a
2168 # tool from the auxiliary directory.  The problem is that $srcdir (and
2169 # therefore $ac_aux_dir as well) can be either absolute or relative,
2170 # depending on how configure is run.  This is pretty annoying, since
2171 # it makes $ac_aux_dir quite unusable in subdirectories: in the top
2172 # source directory, any form will work fine, but in subdirectories a
2173 # relative path needs to be adjusted first.
2174 #
2175 # $ac_aux_dir/missing
2176 #    fails when called from a subdirectory if $ac_aux_dir is relative
2177 # $top_srcdir/$ac_aux_dir/missing
2178 #    fails if $ac_aux_dir is absolute,
2179 #    fails when called from a subdirectory in a VPATH build with
2180 #          a relative $ac_aux_dir
2181 #
2182 # The reason of the latter failure is that $top_srcdir and $ac_aux_dir
2183 # are both prefixed by $srcdir.  In an in-source build this is usually
2184 # harmless because $srcdir is `.', but things will broke when you
2185 # start a VPATH build or use an absolute $srcdir.
2186 #
2187 # So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
2188 # iff we strip the leading $srcdir from $ac_aux_dir.  That would be:
2189 #   am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
2190 # and then we would define $MISSING as
2191 #   MISSING="\${SHELL} $am_aux_dir/missing"
2192 # This will work as long as MISSING is not called from configure, because
2193 # unfortunately $(top_srcdir) has no meaning in configure.
2194 # However there are other variables, like CC, which are often used in
2195 # configure, and could therefore not use this "fixed" $ac_aux_dir.
2196 #
2197 # Another solution, used here, is to always expand $ac_aux_dir to an
2198 # absolute PATH.  The drawback is that using absolute paths prevent a
2199 # configured tree to be moved without reconfiguration.
2200
2201 # Rely on autoconf to set up CDPATH properly.
2202 AC_PREREQ([2.50])
2203
2204 AC_DEFUN([AM_AUX_DIR_EXPAND], [
2205 # expand $ac_aux_dir to an absolute path
2206 am_aux_dir=`cd $ac_aux_dir && pwd`
2207 ])
2208
2209 # AM_PROG_INSTALL_SH
2210 # ------------------
2211 # Define $install_sh.
2212
2213 # Copyright 2001 Free Software Foundation, Inc.
2214
2215 # This program is free software; you can redistribute it and/or modify
2216 # it under the terms of the GNU General Public License as published by
2217 # the Free Software Foundation; either version 2, or (at your option)
2218 # any later version.
2219
2220 # This program is distributed in the hope that it will be useful,
2221 # but WITHOUT ANY WARRANTY; without even the implied warranty of
2222 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
2223 # GNU General Public License for more details.
2224
2225 # You should have received a copy of the GNU General Public License
2226 # along with this program; if not, write to the Free Software
2227 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
2228 # 02111-1307, USA.
2229
2230 AC_DEFUN([AM_PROG_INSTALL_SH],
2231 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
2232 install_sh=${install_sh-"$am_aux_dir/install-sh"}
2233 AC_SUBST(install_sh)])
2234
2235 # AM_PROG_INSTALL_STRIP
2236
2237 # Copyright 2001 Free Software Foundation, Inc.
2238
2239 # This program is free software; you can redistribute it and/or modify
2240 # it under the terms of the GNU General Public License as published by
2241 # the Free Software Foundation; either version 2, or (at your option)
2242 # any later version.
2243
2244 # This program is distributed in the hope that it will be useful,
2245 # but WITHOUT ANY WARRANTY; without even the implied warranty of
2246 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
2247 # GNU General Public License for more details.
2248
2249 # You should have received a copy of the GNU General Public License
2250 # along with this program; if not, write to the Free Software
2251 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
2252 # 02111-1307, USA.
2253
2254 # One issue with vendor `install' (even GNU) is that you can't
2255 # specify the program used to strip binaries.  This is especially
2256 # annoying in cross-compiling environments, where the build's strip
2257 # is unlikely to handle the host's binaries.
2258 # Fortunately install-sh will honor a STRIPPROG variable, so we
2259 # always use install-sh in `make install-strip', and initialize
2260 # STRIPPROG with the value of the STRIP variable (set by the user).
2261 AC_DEFUN([AM_PROG_INSTALL_STRIP],
2262 [AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
2263 # Installed binaries are usually stripped using `strip' when the user
2264 # run `make install-strip'.  However `strip' might not be the right
2265 # tool to use in cross-compilation environments, therefore Automake
2266 # will honor the `STRIP' environment variable to overrule this program.
2267 dnl Don't test for $cross_compiling = yes, because it might be `maybe'.
2268 if test "$cross_compiling" != no; then
2269   AC_CHECK_TOOL([STRIP], [strip], :)
2270 fi
2271 INSTALL_STRIP_PROGRAM="\${SHELL} \$(install_sh) -c -s"
2272 AC_SUBST([INSTALL_STRIP_PROGRAM])])
2273
2274 #                                                          -*- Autoconf -*-
2275 # Copyright (C) 2003  Free Software Foundation, Inc.
2276
2277 # This program is free software; you can redistribute it and/or modify
2278 # it under the terms of the GNU General Public License as published by
2279 # the Free Software Foundation; either version 2, or (at your option)
2280 # any later version.
2281
2282 # This program is distributed in the hope that it will be useful,
2283 # but WITHOUT ANY WARRANTY; without even the implied warranty of
2284 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
2285 # GNU General Public License for more details.
2286
2287 # You should have received a copy of the GNU General Public License
2288 # along with this program; if not, write to the Free Software
2289 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
2290 # 02111-1307, USA.
2291
2292 # serial 1
2293
2294 # Check whether the underlying file-system supports filenames
2295 # with a leading dot.  For instance MS-DOS doesn't.
2296 AC_DEFUN([AM_SET_LEADING_DOT],
2297 [rm -rf .tst 2>/dev/null
2298 mkdir .tst 2>/dev/null
2299 if test -d .tst; then
2300   am__leading_dot=.
2301 else
2302   am__leading_dot=_
2303 fi
2304 rmdir .tst 2>/dev/null
2305 AC_SUBST([am__leading_dot])])
2306
2307 # serial 5                                              -*- Autoconf -*-
2308
2309 # Copyright (C) 1999, 2000, 2001, 2002, 2003  Free Software Foundation, Inc.
2310
2311 # This program is free software; you can redistribute it and/or modify
2312 # it under the terms of the GNU General Public License as published by
2313 # the Free Software Foundation; either version 2, or (at your option)
2314 # any later version.
2315
2316 # This program is distributed in the hope that it will be useful,
2317 # but WITHOUT ANY WARRANTY; without even the implied warranty of
2318 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
2319 # GNU General Public License for more details.
2320
2321 # You should have received a copy of the GNU General Public License
2322 # along with this program; if not, write to the Free Software
2323 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
2324 # 02111-1307, USA.
2325
2326
2327 # There are a few dirty hacks below to avoid letting `AC_PROG_CC' be
2328 # written in clear, in which case automake, when reading aclocal.m4,
2329 # will think it sees a *use*, and therefore will trigger all it's
2330 # C support machinery.  Also note that it means that autoscan, seeing
2331 # CC etc. in the Makefile, will ask for an AC_PROG_CC use...
2332
2333
2334
2335 # _AM_DEPENDENCIES(NAME)
2336 # ----------------------
2337 # See how the compiler implements dependency checking.
2338 # NAME is "CC", "CXX", "GCJ", or "OBJC".
2339 # We try a few techniques and use that to set a single cache variable.
2340 #
2341 # We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
2342 # modified to invoke _AM_DEPENDENCIES(CC); we would have a circular
2343 # dependency, and given that the user is not expected to run this macro,
2344 # just rely on AC_PROG_CC.
2345 AC_DEFUN([_AM_DEPENDENCIES],
2346 [AC_REQUIRE([AM_SET_DEPDIR])dnl
2347 AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
2348 AC_REQUIRE([AM_MAKE_INCLUDE])dnl
2349 AC_REQUIRE([AM_DEP_TRACK])dnl
2350
2351 ifelse([$1], CC,   [depcc="$CC"   am_compiler_list=],
2352        [$1], CXX,  [depcc="$CXX"  am_compiler_list=],
2353        [$1], OBJC, [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
2354        [$1], GCJ,  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
2355                    [depcc="$$1"   am_compiler_list=])
2356
2357 AC_CACHE_CHECK([dependency style of $depcc],
2358                [am_cv_$1_dependencies_compiler_type],
2359 [if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
2360   # We make a subdir and do the tests there.  Otherwise we can end up
2361   # making bogus files that we don't know about and never remove.  For
2362   # instance it was reported that on HP-UX the gcc test will end up
2363   # making a dummy file named `D' -- because `-MD' means `put the output
2364   # in D'.
2365   mkdir conftest.dir
2366   # Copy depcomp to subdir because otherwise we won't find it if we're
2367   # using a relative directory.
2368   cp "$am_depcomp" conftest.dir
2369   cd conftest.dir
2370   # We will build objects and dependencies in a subdirectory because
2371   # it helps to detect inapplicable dependency modes.  For instance
2372   # both Tru64's cc and ICC support -MD to output dependencies as a
2373   # side effect of compilation, but ICC will put the dependencies in
2374   # the current directory while Tru64 will put them in the object
2375   # directory.
2376   mkdir sub
2377
2378   am_cv_$1_dependencies_compiler_type=none
2379   if test "$am_compiler_list" = ""; then
2380      am_compiler_list=`sed -n ['s/^#*\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
2381   fi
2382   for depmode in $am_compiler_list; do
2383     # Setup a source with many dependencies, because some compilers
2384     # like to wrap large dependency lists on column 80 (with \), and
2385     # we should not choose a depcomp mode which is confused by this.
2386     #
2387     # We need to recreate these files for each test, as the compiler may
2388     # overwrite some of them when testing with obscure command lines.
2389     # This happens at least with the AIX C compiler.
2390     : > sub/conftest.c
2391     for i in 1 2 3 4 5 6; do
2392       echo '#include "conftst'$i'.h"' >> sub/conftest.c
2393       : > sub/conftst$i.h
2394     done
2395     echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
2396
2397     case $depmode in
2398     nosideeffect)
2399       # after this tag, mechanisms are not by side-effect, so they'll
2400       # only be used when explicitly requested
2401       if test "x$enable_dependency_tracking" = xyes; then
2402         continue
2403       else
2404         break
2405       fi
2406       ;;
2407     none) break ;;
2408     esac
2409     # We check with `-c' and `-o' for the sake of the "dashmstdout"
2410     # mode.  It turns out that the SunPro C++ compiler does not properly
2411     # handle `-M -o', and we need to detect this.
2412     if depmode=$depmode \
2413        source=sub/conftest.c object=sub/conftest.${OBJEXT-o} \
2414        depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
2415        $SHELL ./depcomp $depcc -c -o sub/conftest.${OBJEXT-o} sub/conftest.c \
2416          >/dev/null 2>conftest.err &&
2417        grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
2418        grep sub/conftest.${OBJEXT-o} sub/conftest.Po > /dev/null 2>&1 &&
2419        ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
2420       # icc doesn't choke on unknown options, it will just issue warnings
2421       # (even with -Werror).  So we grep stderr for any message
2422       # that says an option was ignored.
2423       if grep 'ignoring option' conftest.err >/dev/null 2>&1; then :; else
2424         am_cv_$1_dependencies_compiler_type=$depmode
2425         break
2426       fi
2427     fi
2428   done
2429
2430   cd ..
2431   rm -rf conftest.dir
2432 else
2433   am_cv_$1_dependencies_compiler_type=none
2434 fi
2435 ])
2436 AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
2437 AM_CONDITIONAL([am__fastdep$1], [
2438   test "x$enable_dependency_tracking" != xno \
2439   && test "$am_cv_$1_dependencies_compiler_type" = gcc3])
2440 ])
2441
2442
2443 # AM_SET_DEPDIR
2444 # -------------
2445 # Choose a directory name for dependency files.
2446 # This macro is AC_REQUIREd in _AM_DEPENDENCIES
2447 AC_DEFUN([AM_SET_DEPDIR],
2448 [AC_REQUIRE([AM_SET_LEADING_DOT])dnl
2449 AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
2450 ])
2451
2452
2453 # AM_DEP_TRACK
2454 # ------------
2455 AC_DEFUN([AM_DEP_TRACK],
2456 [AC_ARG_ENABLE(dependency-tracking,
2457 [  --disable-dependency-tracking Speeds up one-time builds
2458   --enable-dependency-tracking  Do not reject slow dependency extractors])
2459 if test "x$enable_dependency_tracking" != xno; then
2460   am_depcomp="$ac_aux_dir/depcomp"
2461   AMDEPBACKSLASH='\'
2462 fi
2463 AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
2464 AC_SUBST([AMDEPBACKSLASH])
2465 ])
2466
2467 # Generate code to set up dependency tracking.   -*- Autoconf -*-
2468
2469 # Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
2470
2471 # This program is free software; you can redistribute it and/or modify
2472 # it under the terms of the GNU General Public License as published by
2473 # the Free Software Foundation; either version 2, or (at your option)
2474 # any later version.
2475
2476 # This program is distributed in the hope that it will be useful,
2477 # but WITHOUT ANY WARRANTY; without even the implied warranty of
2478 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
2479 # GNU General Public License for more details.
2480
2481 # You should have received a copy of the GNU General Public License
2482 # along with this program; if not, write to the Free Software
2483 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
2484 # 02111-1307, USA.
2485
2486 #serial 2
2487
2488 # _AM_OUTPUT_DEPENDENCY_COMMANDS
2489 # ------------------------------
2490 AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
2491 [for mf in $CONFIG_FILES; do
2492   # Strip MF so we end up with the name of the file.
2493   mf=`echo "$mf" | sed -e 's/:.*$//'`
2494   # Check whether this is an Automake generated Makefile or not.
2495   # We used to match only the files named `Makefile.in', but
2496   # some people rename them; so instead we look at the file content.
2497   # Grep'ing the first line is not enough: some people post-process
2498   # each Makefile.in and add a new line on top of each file to say so.
2499   # So let's grep whole file.
2500   if grep '^#.*generated by automake' $mf > /dev/null 2>&1; then
2501     dirpart=`AS_DIRNAME("$mf")`
2502   else
2503     continue
2504   fi
2505   grep '^DEP_FILES *= *[[^ @%:@]]' < "$mf" > /dev/null || continue
2506   # Extract the definition of DEP_FILES from the Makefile without
2507   # running `make'.
2508   DEPDIR=`sed -n -e '/^DEPDIR = / s///p' < "$mf"`
2509   test -z "$DEPDIR" && continue
2510   # When using ansi2knr, U may be empty or an underscore; expand it
2511   U=`sed -n -e '/^U = / s///p' < "$mf"`
2512   test -d "$dirpart/$DEPDIR" || mkdir "$dirpart/$DEPDIR"
2513   # We invoke sed twice because it is the simplest approach to
2514   # changing $(DEPDIR) to its actual value in the expansion.
2515   for file in `sed -n -e '
2516     /^DEP_FILES = .*\\\\$/ {
2517       s/^DEP_FILES = //
2518       :loop
2519         s/\\\\$//
2520         p
2521         n
2522         /\\\\$/ b loop
2523       p
2524     }
2525     /^DEP_FILES = / s/^DEP_FILES = //p' < "$mf" | \
2526        sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g' -e 's/\$U/'"$U"'/g'`; do
2527     # Make sure the directory exists.
2528     test -f "$dirpart/$file" && continue
2529     fdir=`AS_DIRNAME(["$file"])`
2530     AS_MKDIR_P([$dirpart/$fdir])
2531     # echo "creating $dirpart/$file"
2532     echo '# dummy' > "$dirpart/$file"
2533   done
2534 done
2535 ])# _AM_OUTPUT_DEPENDENCY_COMMANDS
2536
2537
2538 # AM_OUTPUT_DEPENDENCY_COMMANDS
2539 # -----------------------------
2540 # This macro should only be invoked once -- use via AC_REQUIRE.
2541 #
2542 # This code is only required when automatic dependency tracking
2543 # is enabled.  FIXME.  This creates each `.P' file that we will
2544 # need in order to bootstrap the dependency handling code.
2545 AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
2546 [AC_CONFIG_COMMANDS([depfiles],
2547      [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
2548      [AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"])
2549 ])
2550
2551 # Check to see how 'make' treats includes.      -*- Autoconf -*-
2552
2553 # Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
2554
2555 # This program is free software; you can redistribute it and/or modify
2556 # it under the terms of the GNU General Public License as published by
2557 # the Free Software Foundation; either version 2, or (at your option)
2558 # any later version.
2559
2560 # This program is distributed in the hope that it will be useful,
2561 # but WITHOUT ANY WARRANTY; without even the implied warranty of
2562 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
2563 # GNU General Public License for more details.
2564
2565 # You should have received a copy of the GNU General Public License
2566 # along with this program; if not, write to the Free Software
2567 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
2568 # 02111-1307, USA.
2569
2570 # serial 2
2571
2572 # AM_MAKE_INCLUDE()
2573 # -----------------
2574 # Check to see how make treats includes.
2575 AC_DEFUN([AM_MAKE_INCLUDE],
2576 [am_make=${MAKE-make}
2577 cat > confinc << 'END'
2578 am__doit:
2579         @echo done
2580 .PHONY: am__doit
2581 END
2582 # If we don't find an include directive, just comment out the code.
2583 AC_MSG_CHECKING([for style of include used by $am_make])
2584 am__include="#"
2585 am__quote=
2586 _am_result=none
2587 # First try GNU make style include.
2588 echo "include confinc" > confmf
2589 # We grep out `Entering directory' and `Leaving directory'
2590 # messages which can occur if `w' ends up in MAKEFLAGS.
2591 # In particular we don't look at `^make:' because GNU make might
2592 # be invoked under some other name (usually "gmake"), in which
2593 # case it prints its new name instead of `make'.
2594 if test "`$am_make -s -f confmf 2> /dev/null | grep -v 'ing directory'`" = "done"; then
2595    am__include=include
2596    am__quote=
2597    _am_result=GNU
2598 fi
2599 # Now try BSD make style include.
2600 if test "$am__include" = "#"; then
2601    echo '.include "confinc"' > confmf
2602    if test "`$am_make -s -f confmf 2> /dev/null`" = "done"; then
2603       am__include=.include
2604       am__quote="\""
2605       _am_result=BSD
2606    fi
2607 fi
2608 AC_SUBST([am__include])
2609 AC_SUBST([am__quote])
2610 AC_MSG_RESULT([$_am_result])
2611 rm -f confinc confmf
2612 ])
2613