libstdc++-v3/aclocal.m4

   1 dnl aclocal.m4 generated automatically by aclocal 1.4-p5
   2
   3 dnl Copyright (C) 1994, 1995-8, 1999, 2001 Free Software Foundation, Inc.
   4 dnl This file is free software; the Free Software Foundation
   5 dnl gives unlimited permission to copy and/or distribute it,
   6 dnl with or without modifications, as long as this notice is preserved.
   7
   8 dnl This program is distributed in the hope that it will be useful,
   9 dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without
  10 dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A
  11 dnl PARTICULAR PURPOSE.
  12
  13 dnl
  14 dnl Initialize configure bits.
  15 dnl
  16 dnl GLIBCPP_CONFIGURE
  17 AC_DEFUN(GLIBCPP_CONFIGURE, [
  18   dnl Default to --enable-multilib
  19   AC_ARG_ENABLE(multilib,
  20   [  --enable-multilib       build hella library versions (default)],
  21   [case "${enableval}" in
  22     yes) multilib=yes ;;
  23     no)  multilib=no ;;
  24     *)   AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
  25    esac], [multilib=yes])dnl
  26
  27 # When building with srcdir == objdir, links to the source files will
  28 # be created in directories within the target_subdir.  We have to
  29 # adjust toplevel_srcdir accordingly, so that configure finds
  30 # install-sh and other auxiliary files that live in the top-level
  31 # source directory.
  32 if test "${srcdir}" = "."; then
  33   if test -z "${with_target_subdir}"; then
  34     toprel=".."
  35   else
  36     if test "${with_target_subdir}" != "."; then
  37       toprel="${with_multisrctop}../.."
  38     else
  39       toprel="${with_multisrctop}.."
  40     fi
  41   fi
  42 else
  43   toprel=".."
  44 fi
  45 AC_CONFIG_AUX_DIR(${srcdir}/$toprel)
  46 toplevel_srcdir=\${top_srcdir}/$toprel
  47 AC_SUBST(toplevel_srcdir)
  48
  49 # Export build and source directories.
  50 # These need to be absolute paths, yet at the same time need to
  51 # canonicalize only relative paths, because then amd will not unmount
  52 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
  53 glibcpp_builddir=`pwd`
  54 case $srcdir in
  55 [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
  56 *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
  57 esac
  58 AC_SUBST(glibcpp_builddir)
  59 AC_SUBST(glibcpp_srcdir)
  60
  61 dnl This is here just to satisfy automake.
  62 ifelse(not,equal,[AC_CONFIG_AUX_DIR(..)])
  63
  64 # Will set LN_S to either 'ln -s' or 'ln'.  With autoconf 2.50+, can also
  65 # be 'cp -p' if linking isn't available.
  66 #ac_cv_prog_LN_S='cp -p'
  67 AC_PROG_LN_S
  68
  69 # We use these options to decide which functions to include.
  70 AC_ARG_WITH(target-subdir,
  71 [  --with-target-subdir=SUBDIR
  72                            configuring in a subdirectory])
  73 AC_ARG_WITH(cross-host,
  74 [  --with-cross-host=HOST  configuring with a cross compiler])
  75
  76   glibcpp_basedir=$srcdir/$toprel/$1/libstdc++-v3
  77   AC_SUBST(glibcpp_basedir)
  78
  79   # Never versions of autoconf add an underscore to these functions.
  80   # Prevent future problems ...
  81   ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))])
  82   ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))])
  83   ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))])
  84   ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))])
  85
  86 #  AC_PROG_CC
  87
  88 # FIXME: We temporarily define our own version of AC_PROG_CC.  This is
  89 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS.  We
  90 # are probably using a cross compiler, which will not be able to fully
  91 # link an executable.  This should really be fixed in autoconf
  92 # itself.
  93
  94 AC_DEFUN(LIB_AC_PROG_CC,
  95 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
  96 dnl Fool anybody using AC_PROG_CC.
  97 AC_PROVIDE([AC_PROG_CC])
  98 AC_CHECK_PROG(CC, gcc, gcc)
  99 if test -z "$CC"; then
 100   AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
 101   test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
 102 fi
 103
 104 AC_PROG_CC_GNU
 105
 106 if test $ac_cv_prog_gcc = yes; then
 107   GCC=yes
 108 dnl Check whether -g works, even if CFLAGS is set, in case the package
 109 dnl plays around with CFLAGS (such as to build both debugging and
 110 dnl normal versions of a library), tasteless as that idea is.
 111   ac_test_CFLAGS="${CFLAGS+set}"
 112   ac_save_CFLAGS="$CFLAGS"
 113   CFLAGS=
 114   AC_PROG_CC_G
 115   if test "$ac_test_CFLAGS" = set; then
 116     CFLAGS="$ac_save_CFLAGS"
 117   elif test $ac_cv_prog_cc_g = yes; then
 118     CFLAGS="-g -O2"
 119   else
 120     CFLAGS="-O2"
 121   fi
 122 else
 123   GCC=
 124   test "${CFLAGS+set}" = set || CFLAGS="-g"
 125 fi
 126 ])
 127
 128 LIB_AC_PROG_CC
 129
 130 # Can't just call these here as g++ requires libstc++ to be built....
 131 #  AC_PROG_CXX
 132
 133 # Likewise for AC_PROG_CXX.
 134 AC_DEFUN(LIB_AC_PROG_CXX,
 135 [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
 136 dnl Fool anybody using AC_PROG_CXX.
 137 AC_PROVIDE([AC_PROG_CXX])
 138 # Use glibcpp_CXX so that we do not cause CXX to be cached with the
 139 # flags that come in CXX while configuring libstdc++.  They're different
 140 # from those used for all other target libraries.  If CXX is set in
 141 # the environment, respect that here.
 142 glibcpp_CXX=$CXX
 143 AC_CHECK_PROGS(glibcpp_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
 144 AC_SUBST(glibcpp_CXX)
 145 CXX=$glibcpp_CXX
 146 test -z "$glibcpp_CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
 147
 148 AC_PROG_CXX_GNU
 149
 150 if test $ac_cv_prog_gxx = yes; then
 151   GXX=yes
 152 dnl Check whether -g works, even if CXXFLAGS is set, in case the package
 153 dnl plays around with CXXFLAGS (such as to build both debugging and
 154 dnl normal versions of a library), tasteless as that idea is.
 155   ac_test_CXXFLAGS="${CXXFLAGS+set}"
 156   ac_save_CXXFLAGS="$CXXFLAGS"
 157   CXXFLAGS=
 158   AC_PROG_CXX_G
 159   if test "$ac_test_CXXFLAGS" = set; then
 160     CXXFLAGS="$ac_save_CXXFLAGS"
 161   elif test $ac_cv_prog_cxx_g = yes; then
 162     CXXFLAGS="-g -O2"
 163   else
 164     CXXFLAGS="-O2"
 165   fi
 166 else
 167   GXX=
 168   test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
 169 fi
 170 ])
 171
 172 LIB_AC_PROG_CXX
 173
 174    # For some reason, gettext needs this.
 175    AC_ISC_POSIX
 176
 177   AC_CHECK_TOOL(AS, as)
 178   AC_CHECK_TOOL(AR, ar)
 179   AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
 180   AC_PROG_INSTALL
 181
 182   AM_MAINTAINER_MODE
 183
 184   # We need AC_EXEEXT to keep automake happy in cygnus mode.  However,
 185   # at least currently, we never actually build a program, so we never
 186   # need to use $(EXEEXT).  Moreover, the test for EXEEXT normally
 187   # fails, because we are probably configuring with a cross compiler
 188   # which can't create executables.  So we include AC_EXEEXT to keep
 189   # automake happy, but we don't execute it, since we don't care about
 190   # the result.
 191   if false; then
 192     # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands
 193     # to nothing, so nothing would remain between `then' and `fi' if it
 194     # were not for the `:' below.
 195     :
 196     AC_EXEEXT
 197   fi
 198
 199   . [$]{glibcpp_basedir}/configure.host
 200
 201   case [$]{glibcpp_basedir} in
 202     /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
 203     *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
 204   esac
 205
 206   # This does for the target what configure.host does for the host.  In
 207   # addition to possibly modifying the same flags, it also sets up symlinks.
 208   GLIBCPP_CHECK_TARGET
 209
 210   #
 211 ])
 212
 213
 214 dnl
 215 dnl Check to see if g++ can compile this library, and if so, if any version-
 216 dnl specific precautions need to be taken.
 217 dnl
 218 dnl GLIBCPP_CHECK_COMPILER_VERSION
 219 AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
 220 if test ! -f stamp-sanity-compiler; then
 221   AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3])
 222   AC_LANG_SAVE
 223   AC_LANG_CPLUSPLUS
 224   AC_TRY_COMPILE(, [
 225   #if __GNUC__ < 3
 226     not_ok
 227   #endif
 228   ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above]))
 229   AC_LANG_RESTORE
 230   AC_MSG_RESULT($gpp_satisfactory)
 231   touch stamp-sanity-compiler
 232 fi
 233 ])
 234
 235
 236 dnl
 237 dnl Tests for newer compiler features, or features that are present in newer
 238 dnl compiler versions but not older compiler versions still in use, should
 239 dnl be placed here.
 240 dnl
 241 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
 242 dnl new inlining code or the new system_header pragma will die on -Werror.
 243 dnl Leave it out by default and use maint-mode to use it.
 244 dnl
 245 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
 246 dnl compiler supports it and the user has not requested debug mode.
 247 dnl
 248 dnl GLIBCPP_CHECK_COMPILER_FEATURES
 249 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
 250   # All these tests are for C++; save the language and the compiler flags.
 251   # The CXXFLAGS thing is suspicious, but based on similar bits previously
 252   # found in GLIBCPP_CONFIGURE.
 253   AC_LANG_SAVE
 254   AC_LANG_CPLUSPLUS
 255   ac_test_CXXFLAGS="${CXXFLAGS+set}"
 256   ac_save_CXXFLAGS="$CXXFLAGS"
 257
 258   # Check for maintainer-mode bits.
 259   if test x"$USE_MAINTAINER_MODE" = xno; then
 260     WERROR=''
 261   else
 262     WERROR='-Werror'
 263   fi
 264
 265   # Check for -ffunction-sections -fdata-sections
 266   AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
 267   CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
 268   AC_TRY_COMPILE(, [int foo;
 269   ], [ac_fdsections=yes], [ac_fdsections=no])
 270   if test "$ac_test_CXXFLAGS" = set; then
 271     CXXFLAGS="$ac_save_CXXFLAGS"
 272   else
 273     # this is the suspicious part
 274     CXXFLAGS=''
 275   fi
 276   if test x"$ac_fdsections" = x"yes" &&
 277      test x"$enable_debug" = x"no"; then
 278     SECTION_FLAGS='-ffunction-sections -fdata-sections'
 279   fi
 280   AC_MSG_RESULT($ac_fdsections)
 281
 282   AC_LANG_RESTORE
 283   AC_SUBST(WERROR)
 284   AC_SUBST(SECTION_FLAGS)
 285 ])
 286
 287
 288 dnl
 289 dnl If GNU ld is in use, check to see if tricky linker opts can be used.  If
 290 dnl the native linker is in use, all variables will be defined to something
 291 dnl safe (like an empty string).
 292 dnl
 293 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
 294 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
 295 dnl
 296 dnl GLIBCPP_CHECK_LINKER_FEATURES
 297 AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
 298   # If we're not using GNU ld, then there's no point in even trying these
 299   # tests.  Check for that first.  We should have already tested for gld
 300   # by now (in libtool), but require it now just to be safe...
 301   SECTION_LDFLAGS=''
 302   OPT_LDFLAGS=''
 303   AC_REQUIRE([AC_PROG_LD])
 304
 305   # Set --gc-sections.
 306   if test "$ac_cv_prog_gnu_ld" = "notbroken"; then
 307     # GNU ld it is!  Joy and bunny rabbits!
 308
 309     # All these tests are for C++; save the language and the compiler flags.
 310     # Need to do this so that g++ won't try to link in libstdc++
 311     ac_test_CFLAGS="${CFLAGS+set}"
 312     ac_save_CFLAGS="$CFLAGS"
 313     CFLAGS='-x c++  -Wl,--gc-sections'
 314
 315     # Check for -Wl,--gc-sections
 316     # XXX This test is broken at the moment, as symbols required for
 317     # linking are now in libsupc++ (not built yet.....). In addition,
 318     # this test has cored on solaris in the past. In addition,
 319     # --gc-sections doesn't really work at the moment (keeps on discarding
 320     # used sections, first .eh_frame and now some of the glibc sections for
 321     # iconv). Bzzzzt. Thanks for playing, maybe next time.
 322     AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
 323     AC_TRY_RUN([
 324      int main(void)
 325      {
 326        try { throw 1; }
 327        catch (...) { };
 328        return 0;
 329      }
 330     ], [ac_sectionLDflags=yes],[ac_sectionLFflags=no], [ac_sectionLDflags=yes])
 331     if test "$ac_test_CFLAGS" = set; then
 332       CFLAGS="$ac_save_CFLAGS"
 333     else
 334       # this is the suspicious part
 335       CFLAGS=''
 336     fi
 337     if test "$ac_sectionLDflags" = "yes"; then
 338       SECTION_LDFLAGS='-Wl,--gc-sections'
 339     fi
 340     AC_MSG_RESULT($ac_sectionLDflags)
 341   fi
 342
 343   # Set linker optimization flags.
 344   if test x"$ac_cv_prog_gnu_ld" = x"yes" &&
 345      test x"$enable_debug" = x"no"; then
 346     OPT_LDFLAGS='-Wl,-O1'
 347   fi
 348
 349   AC_SUBST(SECTION_LDFLAGS)
 350   AC_SUBST(OPT_LDFLAGS)
 351 ])
 352
 353
 354 dnl
 355 dnl Check to see if the (math function) argument passed is
 356 dnl declared when using the c++ compiler
 357 dnl ASSUMES argument is a math function with ONE parameter
 358 dnl
 359 dnl GLIBCPP_CHECK_MATH_DECL_1
 360 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_1, [
 361   AC_MSG_CHECKING([for $1 declaration])
 362   if test x${glibcpp_cv_func_$1_use+set} != xset; then
 363     AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
 364       AC_LANG_SAVE
 365       AC_LANG_CPLUSPLUS
 366       AC_TRY_COMPILE([#include <math.h>
 367                       #ifdef HAVE_IEEEFP_H
 368                       #include <ieeefp.h>
 369                       #endif
 370                      ],
 371                      [ $1(0);],
 372                      [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
 373       AC_LANG_RESTORE
 374     ])
 375   fi
 376   AC_MSG_RESULT($glibcpp_cv_func_$1_use)
 377 ])
 378
 379 dnl
 380 dnl Check to see if the (math function) argument passed is
 381 dnl 1) declared when using the c++ compiler
 382 dnl 2) has "C" linkage
 383 dnl 3) if not, see if 1) and 2) for argument prepended with '_'
 384 dnl
 385 dnl Define HAVE_CARGF etc if "cargf" is declared and links
 386 dnl
 387 dnl argument 1 is name of function to check
 388 dnl
 389 dnl ASSUMES argument is a math function with ONE parameter
 390 dnl
 391 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1
 392 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [
 393   GLIBCPP_CHECK_MATH_DECL_1($1)
 394   if test x$glibcpp_cv_func_$1_use = x"yes"; then
 395     AC_CHECK_FUNCS($1)
 396   else
 397     GLIBCPP_CHECK_MATH_DECL_1(_$1)
 398     if test x$glibcpp_cv_func__$1_use = x"yes"; then
 399       AC_CHECK_FUNCS(_$1)
 400     fi
 401   fi
 402 ])
 403
 404
 405 dnl
 406 dnl Like GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of
 407 dnl of functions at once.  It's an all-or-nothing check -- either
 408 dnl HAVE_XYZ is defined for each of the functions, or for none of them.
 409 dnl Doing it this way saves significant configure time.
 410 AC_DEFUN(GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1, [
 411   AC_MSG_CHECKING([for $1 functions])
 412   AC_CACHE_VAL(glibcpp_cv_func_$2_use, [
 413     AC_LANG_SAVE
 414     AC_LANG_CPLUSPLUS
 415     AC_TRY_COMPILE([#include <math.h>],
 416                    [ `for x in $3; do echo "$x (0);"; done` ],
 417                    [glibcpp_cv_func_$2_use=yes],
 418                    [glibcpp_cv_func_$2_use=no])
 419     AC_LANG_RESTORE])
 420   AC_MSG_RESULT($glibcpp_cv_func_$2_use)
 421   if test x$glibcpp_cv_func_$2_use = x"yes"; then
 422     AC_CHECK_FUNCS($3)
 423   fi
 424 ])
 425
 426 dnl
 427 dnl Check to see if the (math function) argument passed is
 428 dnl declared when using the c++ compiler
 429 dnl ASSUMES argument is a math function with TWO parameters
 430 dnl
 431 dnl GLIBCPP_CHECK_MATH_DECL_2
 432 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_2, [
 433   AC_MSG_CHECKING([for $1 declaration])
 434   if test x${glibcpp_cv_func_$1_use+set} != xset; then
 435     AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
 436       AC_LANG_SAVE
 437       AC_LANG_CPLUSPLUS
 438       AC_TRY_COMPILE([#include <math.h>],
 439                      [ $1(0, 0);],
 440                      [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
 441       AC_LANG_RESTORE
 442     ])
 443   fi
 444   AC_MSG_RESULT($glibcpp_cv_func_$1_use)
 445 ])
 446
 447 dnl
 448 dnl Check to see if the (math function) argument passed is
 449 dnl 1) declared when using the c++ compiler
 450 dnl 2) has "C" linkage
 451 dnl
 452 dnl Define HAVE_CARGF etc if "cargf" is declared and links
 453 dnl
 454 dnl argument 1 is name of function to check
 455 dnl
 456 dnl ASSUMES argument is a math function with TWO parameters
 457 dnl
 458 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
 459 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
 460   GLIBCPP_CHECK_MATH_DECL_2($1)
 461   if test x$glibcpp_cv_func_$1_use = x"yes"; then
 462     AC_CHECK_FUNCS($1)
 463   else
 464     GLIBCPP_CHECK_MATH_DECL_2(_$1)
 465     if test x$glibcpp_cv_func__$1_use = x"yes"; then
 466       AC_CHECK_FUNCS(_$1)
 467     fi
 468   fi
 469 ])
 470
 471
 472 dnl
 473 dnl Check to see if the (math function) argument passed is
 474 dnl declared when using the c++ compiler
 475 dnl ASSUMES argument is a math function with THREE parameters
 476 dnl
 477 dnl GLIBCPP_CHECK_MATH_DECL_3
 478 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_3, [
 479   AC_MSG_CHECKING([for $1 declaration])
 480   if test x${glibcpp_cv_func_$1_use+set} != xset; then
 481     AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
 482       AC_LANG_SAVE
 483       AC_LANG_CPLUSPLUS
 484       AC_TRY_COMPILE([#include <math.h>],
 485                      [ $1(0, 0, 0);],
 486                      [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
 487       AC_LANG_RESTORE
 488     ])
 489   fi
 490   AC_MSG_RESULT($glibcpp_cv_func_$1_use)
 491 ])
 492
 493 dnl
 494 dnl Check to see if the (math function) argument passed is
 495 dnl 1) declared when using the c++ compiler
 496 dnl 2) has "C" linkage
 497 dnl
 498 dnl Define HAVE_CARGF etc if "cargf" is declared and links
 499 dnl
 500 dnl argument 1 is name of function to check
 501 dnl
 502 dnl ASSUMES argument is a math function with THREE parameters
 503 dnl
 504 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
 505 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
 506   GLIBCPP_CHECK_MATH_DECL_3($1)
 507   if test x$glibcpp_cv_func_$1_use = x"yes"; then
 508     AC_CHECK_FUNCS($1)
 509   else
 510     GLIBCPP_CHECK_MATH_DECL_3(_$1)
 511     if test x$glibcpp_cv_func__$1_use = x"yes"; then
 512       AC_CHECK_FUNCS(_$1)
 513     fi
 514   fi
 515 ])
 516
 517
 518 dnl
 519 dnl Check to see if the (stdlib function) argument passed is
 520 dnl 1) declared when using the c++ compiler
 521 dnl 2) has "C" linkage
 522 dnl
 523 dnl argument 1 is name of function to check
 524 dnl
 525 dnl ASSUMES argument is a math function with TWO parameters
 526 dnl
 527 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
 528 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
 529   AC_MSG_CHECKING([for $1 declaration])
 530   if test x${glibcpp_cv_func_$1_use+set} != xset; then
 531     AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
 532       AC_LANG_SAVE
 533       AC_LANG_CPLUSPLUS
 534       AC_TRY_COMPILE([#include <stdlib.h>],
 535                      [ $1(0, 0);],
 536                      [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
 537       AC_LANG_RESTORE
 538     ])
 539   fi
 540   AC_MSG_RESULT($glibcpp_cv_func_$1_use)
 541   if test x$glibcpp_cv_func_$1_use = x"yes"; then
 542     AC_CHECK_FUNCS($1)
 543   fi
 544 ])
 545
 546
 547 dnl
 548 dnl Because the builtins are picky picky picky about the arguments they take,
 549 dnl do an explict linkage tests here.
 550 dnl Check to see if the (math function) argument passed is
 551 dnl 1) declared when using the c++ compiler
 552 dnl 2) has "C" linkage
 553 dnl
 554 dnl Define HAVE_CARGF etc if "cargf" is declared and links
 555 dnl
 556 dnl argument 1 is name of function to check
 557 dnl
 558 dnl ASSUMES argument is a math function with ONE parameter
 559 dnl
 560 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
 561 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
 562   AC_MSG_CHECKING([for $1 declaration])
 563   if test x${glibcpp_cv_func_$1_use+set} != xset; then
 564     AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
 565       AC_LANG_SAVE
 566       AC_LANG_CPLUSPLUS
 567       AC_TRY_COMPILE([#include <math.h>],
 568                      [ $1(0);],
 569                      [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
 570       AC_LANG_RESTORE
 571     ])
 572   fi
 573   AC_MSG_RESULT($glibcpp_cv_func_$1_use)
 574   if test x$glibcpp_cv_func_$1_use = x"yes"; then
 575     AC_MSG_CHECKING([for $1 linkage])
 576     if test x${glibcpp_cv_func_$1_link+set} != xset; then
 577       AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
 578         AC_TRY_LINK([#include <math.h>],
 579                     [ $1(0);],
 580                     [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
 581       ])
 582     fi
 583     AC_MSG_RESULT($glibcpp_cv_func_$1_link)
 584     if test x$glibcpp_cv_func_$1_link = x"yes"; then
 585       ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 586       AC_DEFINE_UNQUOTED(${ac_tr_func})
 587     fi
 588   fi
 589 ])
 590
 591
 592 dnl
 593 dnl Check to see what builtin math functions are supported
 594 dnl
 595 dnl check for __builtin_abs
 596 dnl check for __builtin_fabsf
 597 dnl check for __builtin_fabs
 598 dnl check for __builtin_fabl
 599 dnl check for __builtin_labs
 600 dnl check for __builtin_sqrtf
 601 dnl check for __builtin_sqrtl
 602 dnl check for __builtin_fsqrt
 603 dnl check for __builtin_sinf
 604 dnl check for __builtin_sin
 605 dnl check for __builtin_sinl
 606 dnl check for __builtin_cosf
 607 dnl check for __builtin_cos
 608 dnl check for __builtin_cosl
 609 dnl
 610 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
 611 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
 612   dnl Test for builtin math functions.
 613   dnl These are made in gcc/c-common.c
 614   GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
 615   GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
 616   GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
 617   GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
 618   GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
 619
 620   GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
 621   GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fsqrt)
 622   GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
 623
 624   GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
 625   GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
 626   GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
 627
 628   GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
 629   GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
 630   GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
 631
 632   dnl There is, without a doubt, a more elegant way to have these
 633   dnl names exported so that they won't be stripped out of acconfig.h by
 634   dnl autoheader. I leave this as an exercise to somebody less frustrated
 635   dnl than I.... please email the libstdc++ list if you can figure out a
 636   dnl more elegant approach (see autoconf/acgen.m4 and specifically
 637   dnl AC_CHECK_FUNC for things to steal.)
 638   dummyvar=no
 639   if test x$dummyvar = x"yes"; then
 640     AC_DEFINE(HAVE___BUILTIN_ABS)
 641     AC_DEFINE(HAVE___BUILTIN_LABS)
 642     AC_DEFINE(HAVE___BUILTIN_COS)
 643     AC_DEFINE(HAVE___BUILTIN_COSF)
 644     AC_DEFINE(HAVE___BUILTIN_COSL)
 645     AC_DEFINE(HAVE___BUILTIN_FABS)
 646     AC_DEFINE(HAVE___BUILTIN_FABSF)
 647     AC_DEFINE(HAVE___BUILTIN_FABSL)
 648     AC_DEFINE(HAVE___BUILTIN_SIN)
 649     AC_DEFINE(HAVE___BUILTIN_SINF)
 650     AC_DEFINE(HAVE___BUILTIN_SINL)
 651     AC_DEFINE(HAVE___BUILTIN_FSQRT)
 652     AC_DEFINE(HAVE___BUILTIN_SQRTF)
 653     AC_DEFINE(HAVE___BUILTIN_SQRTL)
 654   fi
 655 ])
 656
 657
 658 dnl
 659 dnl Check to see what the underlying c library
 660 dnl These checks need to do two things:
 661 dnl 1) make sure the name is declared when using the c++ compiler
 662 dnl 2) make sure the name has "C" linkage
 663 dnl This might seem like overkill but experience has shown that it's not...
 664 dnl
 665 dnl Define HAVE_STRTOLD if "strtold" is declared and links
 666 dnl Define HAVE_STRTOF if "strtof" is declared and links
 667 dnl Define HAVE_DRAND48 if "drand48" is declared and links
 668 dnl
 669 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
 670 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
 671   ac_test_CXXFLAGS="${CXXFLAGS+set}"
 672   ac_save_CXXFLAGS="$CXXFLAGS"
 673   CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
 674
 675   GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
 676   AC_CHECK_FUNCS(drand48)
 677
 678   CXXFLAGS="$ac_save_CXXFLAGS"
 679 ])
 680
 681
 682 dnl
 683 dnl Check to see what the underlying c library or math library is like.
 684 dnl These checks need to do two things:
 685 dnl 1) make sure the name is declared when using the c++ compiler
 686 dnl 2) make sure the name has "C" linkage
 687 dnl This might seem like overkill but experience has shown that it's not...
 688 dnl
 689 dnl Define HAVE_CARGF etc if "cargf" is found.
 690 dnl
 691 dnl GLIBCPP_CHECK_MATH_SUPPORT
 692 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
 693   ac_test_CXXFLAGS="${CXXFLAGS+set}"
 694   ac_save_CXXFLAGS="$CXXFLAGS"
 695   CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
 696
 697   dnl Check libm
 698   AC_CHECK_LIB(m, sin, libm="-lm")
 699   ac_save_LIBS="$LIBS"
 700   LIBS="$LIBS $libm"
 701
 702   dnl Check to see if certain C math functions exist.
 703   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
 704   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
 705   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
 706   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
 707   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
 708   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
 709   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
 710   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypot)
 711
 712   dnl Check to see if basic C math functions have float versions.
 713   GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
 714                                           float_trig,
 715                                           acosf asinf atanf \
 716                                           cosf sinf tanf \
 717                                           coshf sinhf tanhf)
 718   GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
 719                                           float_round,
 720                                           ceilf floorf)
 721   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
 722   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
 723   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
 724   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
 725   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
 726   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
 727   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf)
 728   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
 729   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
 730   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
 731   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
 732   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
 733   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
 734   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
 735   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
 736
 737   dnl Check to see if basic C math functions have long double versions.
 738   GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,
 739                                           long_double_trig,
 740                                           acosl asinl atanl \
 741                                           cosl sinl tanl \
 742                                           coshl sinhl tanhl)
 743   GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,
 744                                           long_double_round,
 745                                           ceill floorl)
 746   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
 747   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
 748   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
 749   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
 750   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
 751   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
 752   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
 753   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
 754   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl)
 755   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
 756   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
 757   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
 758   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
 759   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
 760   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
 761   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
 762   GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
 763
 764   dnl Some runtimes have these functions with a preceding underscore. Please
 765   dnl keep this sync'd with the one above. And if you add any new symbol,
 766   dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
 767   dnl Check to see if certain C math functions exist.
 768
 769   dnl Check to see if basic C math functions have float versions.
 770   GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig,
 771                                           _float_trig,
 772                                           _acosf _asinf _atanf \
 773                                           _cosf _sinf _tanf \
 774                                           _coshf _sinhf _tanhf)
 775   GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round,
 776                                           _float_round,
 777                                           _ceilf _floorf)
 778
 779   dnl Check to see if basic C math functions have long double versions.
 780   GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig,
 781                                           _long_double_trig,
 782                                           _acosl _asinl _atanl \
 783                                           _cosl _sinl _tanl \
 784                                           _coshl _sinhl _tanhl)
 785   GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round,
 786                                           _long_double_round,
 787                                           _ceill _floorl)
 788
 789   LIBS="$ac_save_LIBS"
 790   CXXFLAGS="$ac_save_CXXFLAGS"
 791 ])
 792
 793
 794 dnl
 795 dnl Check to see if there is native support for complex
 796 dnl
 797 dnl Don't compile bits in math/* if native support exits.
 798 dnl
 799 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found.
 800 dnl
 801 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
 802 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
 803   dnl Check for complex versions of math functions of platform.
 804   AC_CHECK_LIB(m, main)
 805   AC_REPLACE_MATHFUNCS(nan copysignf)
 806
 807   dnl Compile the long double complex functions only if the function
 808   dnl provides the non-complex long double functions that are needed.
 809   dnl Currently this includes copysignl, which should be
 810   dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
 811   USE_COMPLEX_LONG_DOUBLE=no
 812   if test x$ac_cv_func_copysignl = x"yes"; then
 813     USE_COMPLEX_LONG_DOUBLE=yes
 814     AC_REPLACE_MATHFUNCS(signbitl)
 815   fi
 816
 817   AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
 818 ])
 819
 820
 821 dnl Check to see what architecture and operating system we are compiling
 822 dnl for.  Also, if architecture- or OS-specific flags are required for
 823 dnl compilation, pick them up here.
 824 dnl
 825 dnl GLIBCPP_CHECK_TARGET
 826 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
 827     . [$]{glibcpp_basedir}/configure.target
 828     AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
 829     AC_MSG_RESULT(OS config directory is $os_include_dir)
 830 ])
 831
 832
 833 dnl
 834 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
 835 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled.  (This
 836 dnl must have been previously checked.)
 837 dnl
 838 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
 839 dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h
 840 dnl
 841 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
 842 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
 843
 844   dnl Test wchar.h for mbstate_t, which is needed for char_traits and
 845   dnl others even if wchar_t support is not on.
 846   AC_MSG_CHECKING([for mbstate_t])
 847   AC_TRY_COMPILE([#include <wchar.h>],
 848   [mbstate_t teststate;],
 849   have_mbstate_t=yes, have_mbstate_t=no)
 850   AC_MSG_RESULT($have_mbstate_t)
 851   if test x"$have_mbstate_t" = xyes; then
 852     AC_DEFINE(HAVE_MBSTATE_T)
 853   fi
 854
 855   dnl Sanity check for existence of ISO C99 headers for extended encoding.
 856   AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
 857   AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
 858
 859   dnl Only continue checking if the ISO C99 headers exist and support is on.
 860   if test x"$ac_has_wchar_h" = xyes &&
 861      test x"$ac_has_wctype_h" = xyes &&
 862      test x"$enable_c_mbchar" != xno; then
 863
 864     dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
 865     dnl numeric_limits can instantiate type_traits<wchar_t>
 866     AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
 867     AC_TRY_COMPILE([#include <wchar.h>],
 868     [int i = WCHAR_MIN; int j = WCHAR_MAX;],
 869     has_wchar_minmax=yes, has_wchar_minmax=no)
 870     AC_MSG_RESULT($has_wchar_minmax)
 871
 872     dnl Test wchar.h for WEOF, which is what we use to determine whether
 873     dnl to specialize for char_traits<wchar_t> or not.
 874     AC_MSG_CHECKING([for WEOF])
 875     AC_TRY_COMPILE([
 876       #include <wchar.h>
 877       #include <stddef.h>],
 878     [wint_t i = WEOF;],
 879     has_weof=yes, has_weof=no)
 880     AC_MSG_RESULT($has_weof)
 881
 882     dnl Tests for wide character functions used in char_traits<wchar_t>.
 883     ac_wfuncs=yes
 884     AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \
 885     ac_wfuncs=no)
 886
 887     dnl Checks for names injected into std:: by the c_std headers.
 888     AC_CHECK_FUNCS(btowc wctob fgetwc fgetwc fgetws fputwc fputws fwide \
 889     fwprintf fwscanf swprintf swscanf vfwprintf vfwscanf vswprintf vswscanf \
 890     vwprintf vwscanf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
 891     mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstof wcstol \
 892     wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
 893     wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr,, \
 894     ac_wfuncs=no)
 895
 896     AC_MSG_CHECKING([for ISO C99 wchar_t support])
 897     if test x"$has_weof" = xyes &&
 898        test x"$has_wchar_minmax" = xyes &&
 899        test x"$ac_wfuncs" = xyes; then
 900       ac_isoC99_wchar_t=yes
 901     else
 902       ac_isoC99_wchar_t=no
 903     fi
 904     AC_MSG_RESULT($ac_isoC99_wchar_t)
 905
 906     dnl Use iconv for wchar_t to char conversions. As such, check for
 907     dnl X/Open Portability Guide, version 2 features (XPG2).
 908     AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
 909     AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
 910
 911     dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
 912     AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
 913     ac_save_LIBS="$LIBS"
 914     LIBS="$LIBS $libiconv"
 915
 916     AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
 917     ac_XPG2funcs=yes, ac_XPG2funcs=no)
 918
 919     LIBS="$ac_save_LIBS"
 920
 921     AC_MSG_CHECKING([for XPG2 wchar_t support])
 922     if test x"$ac_has_iconv_h" = xyes &&
 923        test x"$ac_has_langinfo_h" = xyes &&
 924        test x"$ac_XPG2funcs" = xyes; then
 925       ac_XPG2_wchar_t=yes
 926     else
 927       ac_XPG2_wchar_t=no
 928     fi
 929     AC_MSG_RESULT($ac_XPG2_wchar_t)
 930
 931     dnl At the moment, only enable wchar_t specializations if all the
 932     dnl above support is present.
 933     AC_MSG_CHECKING([for enabled wchar_t specializations])
 934     if test x"$ac_isoC99_wchar_t" = xyes &&
 935        test x"$ac_XPG2_wchar_t" = xyes; then
 936       AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
 937       AC_MSG_RESULT("yes")
 938     else
 939       AC_MSG_RESULT("no")
 940     fi
 941   else
 942     dnl Wide characters disabled by the user.
 943     AC_MSG_WARN([wchar_t support disabled.])
 944   fi
 945 ])
 946
 947
 948 dnl
 949 dnl Check for special debugging mode; not for production use.
 950 dnl
 951 dnl GLIBCPP_ENABLE_DEBUG
 952 dnl --enable-debug sets '-ggdb3 -O0'.
 953 dnl --disable-debug sets '-g' and whatever optimization options the
 954 dnl     compiler can handle.
 955 dnl  +  --enable-maintainer-mode automatically defaults this to on.
 956 dnl  +  Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
 957 dnl  +  Usage:  GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
 958 dnl       Where DEFAULT is either `yes' or `no'.  If ommitted, it
 959 dnl       defaults to `no'.
 960 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
 961 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
 962 AC_ARG_ENABLE(debug,
 963 changequote(<<, >>)dnl
 964 <<  --enable-debug          extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
 965 changequote([, ])dnl
 966 [case "${enableval}" in
 967  yes) enable_debug=yes ;;
 968  no)  enable_debug=no ;;
 969  *)   AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
 970  esac],
 971 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
 972
 973 dnl Option parsed, now set things appropriately
 974 case "${enable_debug}" in
 975     yes)
 976         DEBUG_FLAGS='-O0 -ggdb3'
 977         ;;
 978     no)
 979         DEBUG_FLAGS='-g'
 980         ;;
 981 esac
 982 AC_SUBST(DEBUG_FLAGS)
 983 ])
 984
 985
 986 dnl
 987 dnl Check for "unusual" flags to pass to the compiler while building.
 988 dnl
 989 dnl GLIBCPP_ENABLE_CXX_FLAGS
 990 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
 991 dnl     experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
 992 dnl     Somehow this same set of flags must be passed when [re]building
 993 dnl     libgcc.
 994 dnl --disable-cxx-flags passes nothing.
 995 dnl  +  See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
 996 dnl         http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
 997 dnl         http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
 998 dnl  +  Usage:  GLIBCPP_ENABLE_CXX_FLAGS(default flags)
 999 dnl       If "default flags" is an empty string (or "none"), the effect is
1000 dnl       the same as --disable or --enable=no.
1001 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1002 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1003 AC_ARG_ENABLE(cxx-flags,
1004 changequote(<<, >>)dnl
1005 <<  --enable-cxx-flags=FLAGS      pass compiler FLAGS when building library;
1006                                 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1007 changequote([, ])dnl
1008 [case "x$enableval" in
1009  xyes)
1010         AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1011  xno|x)
1012         enable_cxx_flags='' ;;
1013  *)
1014         enable_cxx_flags="$enableval" ;;
1015  esac],
1016 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1017
1018 dnl Thinko on my part during design.  This kludge is the workaround.
1019 if test "$enable_cxx_flags" = "none"; then
1020   enable_cxx_flags='';
1021 fi
1022
1023 dnl Run through flags (either default or command-line) and set anything
1024 dnl extra (e.g., #defines) that must accompany particular g++ options.
1025 if test -n "$enable_cxx_flags"; then
1026     for f in $enable_cxx_flags; do
1027         case "$f" in
1028             -fhonor-std)  ;;
1029             -*)  ;;
1030             *)   # and we're trying to pass /what/ exactly?
1031                  AC_MSG_ERROR([compiler flags start with a -]) ;;
1032         esac
1033     done
1034 fi
1035 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1036 AC_SUBST(EXTRA_CXX_FLAGS)
1037 ])
1038
1039
1040 dnl
1041 dnl Check for which locale library to use:  gnu or generic.
1042 dnl
1043 dnl GLIBCPP_ENABLE_CLOCALE
1044 dnl --enable-clocale=gnu sets config/locale/c_locale_gnu.cc and friends
1045 dnl --enable-clocale=generic sets config/locale/c_locale_generic.cc and friends
1046 dnl
1047 dnl default is generic
1048 dnl
1049 AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [
1050   AC_MSG_CHECKING([for clocale to use])
1051   AC_ARG_ENABLE(clocale,
1052   [  --enable-clocale        enable model for target locale package.
1053   --enable-clocale=MODEL  use MODEL target-speific locale package. [default=generic]
1054   ],
1055   if test x$enable_clocale = xno; then
1056      enable_clocale=generic
1057   fi,
1058      enable_clocale=generic)
1059
1060   enable_clocale_flag=$enable_clocale
1061
1062   dnl Check if a valid locale package
1063   case x${enable_clocale_flag} in
1064     xgeneric)
1065       AC_MSG_RESULT(generic)
1066
1067       # Don't use gettext.
1068       USE_NLS=no
1069
1070       CLOCALE_H=config/locale/c_locale_generic.h
1071       CLOCALE_CC=config/locale/c_locale_generic.cc
1072       CCODECVT_H=config/locale/codecvt_specializations_generic.h
1073       CCOLLATE_CC=config/locale/collate_members_generic.cc
1074       CMESSAGES_H=config/locale/messages_members_generic.h
1075       CMESSAGES_CC=config/locale/messages_members_generic.cc
1076       CMONEY_CC=config/locale/moneypunct_members_generic.cc
1077       CNUMERIC_CC=config/locale/numpunct_members_generic.cc
1078       CTIME_CC=config/locale/time_members_generic.cc
1079       ;;
1080     xgnu)
1081       AC_MSG_RESULT(gnu)
1082
1083       # Declare intention to use gettext, and add support for specific
1084       # languages.
1085       # For some reason, ALL_LINGUAS has to be before AM_GNU_GETTEXT
1086       ALL_LINGUAS="de fr"
1087       # Don't call AM_GNU_GETTEXT here. Instead, assume glibc.
1088       # Need to deal with MSGFMT, USE_NLS, and glibcpp_[P,M]OFILES
1089       USE_NLS=yes
1090
1091       # Export the build objects.
1092       for ling in $ALL_LINGUAS; do \
1093         glibcpp_MOFILES="$glibcpp_MOFILES $ling.mo"; \
1094         glibcpp_POFILES="$glibcpp_POFILES $ling.po"; \
1095       done
1096       AC_SUBST(glibcpp_MOFILES)
1097       AC_SUBST(glibcpp_POFILES)
1098
1099       CLOCALE_H=config/locale/c_locale_gnu.h
1100       CLOCALE_CC=config/locale/c_locale_gnu.cc
1101       CCODECVT_H=config/locale/codecvt_specializations_ieee_1003.1-200x.h
1102       CCOLLATE_CC=config/locale/collate_members_gnu.cc
1103       CMESSAGES_H=config/locale/messages_members_gnu.h
1104       CMESSAGES_CC=config/locale/messages_members_gnu.cc
1105       CMONEY_CC=config/locale/moneypunct_members_gnu.cc
1106       CNUMERIC_CC=config/locale/numpunct_members_gnu.cc
1107       CTIME_CC=config/locale/time_members_gnu.cc
1108       ;;
1109     xieee_1003.1)
1110       AC_MSG_RESULT(generic)
1111
1112       # Don't use gettext.
1113       USE_NLS=no
1114
1115       CLOCALE_H=config/locale/c_locale_ieee_1003.1-200x.h
1116       CLOCALE_CC=config/locale/c_locale_ieee_1003.1-200x.cc
1117       CCODECVT_H=config/locale/codecvt_specializations_ieee_1003.1-200x.h
1118       CCOLLATE_CC=config/locale/collate_members_generic.cc
1119       CMESSAGES_H=config/locale/messages_members_ieee_1003.1-200x.h
1120       CMESSAGES_CC=config/locale/messages_members_ieee_1003.1-200x.cc
1121       CMONEY_CC=config/locale/moneypunct_members_generic.cc
1122       CNUMERIC_CC=config/locale/numpunct_members_generic.cc
1123       CTIME_CC=config/locale/time_members_generic.cc
1124       ;;
1125     *)
1126       echo "$enable_clocale is an unknown locale package" 1>&2
1127       exit 1
1128       ;;
1129   esac
1130
1131   # This is where the testsuite looks for locale catalogs, using the
1132   # -DLOCALEDIR define during testsuite compilation.
1133   glibcpp_localedir=${glibcpp_builddir}/po/share/locale
1134   AC_SUBST(glibcpp_localedir)
1135
1136   AC_SUBST(USE_NLS)
1137   AC_SUBST(CLOCALE_H)
1138   AC_SUBST(CCODECVT_H)
1139   AC_SUBST(CMESSAGES_H)
1140   AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc)
1141   AC_LINK_FILES($CCOLLATE_CC, src/collate.cc)
1142   AC_LINK_FILES($CMESSAGES_CC, src/messages.cc)
1143   AC_LINK_FILES($CMONEY_CC, src/moneypunct.cc)
1144   AC_LINK_FILES($CNUMERIC_CC, src/numpunct.cc)
1145   AC_LINK_FILES($CTIME_CC, src/time.cc)
1146 ])
1147
1148
1149 dnl
1150 dnl Check for which I/O library to use:  libio, or something specific.
1151 dnl
1152 dnl GLIBCPP_ENABLE_CSTDIO
1153 dnl --enable-cstdio=libio sets config/io/c_io_libio.h and friends
1154 dnl
1155 dnl default is stdio
1156 dnl
1157 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1158   AC_MSG_CHECKING([for cstdio to use])
1159   AC_ARG_ENABLE(cstdio,
1160   [  --enable-cstdio         enable stdio for target io package.
1161   --enable-cstdio=LIB     use LIB target-speific io package. [default=stdio]
1162   ],
1163   if test x$enable_cstdio = xno; then
1164      enable_cstdio=stdio
1165   fi,
1166      enable_cstdio=stdio)
1167
1168   enable_cstdio_flag=$enable_cstdio
1169
1170   dnl Check if a valid I/O package
1171   case x${enable_cstdio_flag} in
1172     xlibio)
1173       CSTDIO_H=config/io/c_io_libio.h
1174       BASIC_FILE_H=config/io/basic_file_libio.h
1175       BASIC_FILE_CC=config/io/basic_file_libio.cc
1176       AC_MSG_RESULT(libio)
1177
1178       # see if we are on a system with libio native (ie, linux)
1179       AC_CHECK_HEADER(libio.h,  has_libio=yes, has_libio=no)
1180
1181       # Need to check and see what version of glibc is being used. If
1182       # it's not glibc-2.2 or higher, then we'll need to go ahead and
1183       # compile most of libio for linux systems.
1184       if test x$has_libio = x"yes"; then
1185         case "$target" in
1186           *-*-linux*)
1187               AC_MSG_CHECKING([for glibc version >= 2.2])
1188               AC_EGREP_CPP([ok], [
1189             #include <features.h>
1190               #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1191                     ok
1192               #endif
1193               ], glibc_satisfactory=yes, glibc_satisfactory=no)
1194               AC_MSG_RESULT($glibc_satisfactory)
1195             ;;
1196         esac
1197
1198         # XXX at the moment, admit defeat and force the recompilation
1199         # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1200         glibc_satisfactory=no
1201
1202         if test x$glibc_satisfactory = x"yes"; then
1203            need_libio=no
1204            need_wlibio=no
1205         else
1206            need_libio=yes
1207            # bkoz XXX need to add checks to enable this
1208            # pme XXX here's a first pass at such a check
1209            if test x$enable_c_mbchar != xno; then
1210               need_wlibio=yes
1211            else
1212               need_wlibio=no
1213            fi
1214         fi
1215
1216       else
1217          # Using libio, but <libio.h> doesn't exist on the target system. . .
1218          need_libio=yes
1219          # bkoz XXX need to add checks to enable this
1220          # pme XXX here's a first pass at such a check
1221          if test x$enable_c_mbchar != xno; then
1222              need_wlibio=yes
1223          else
1224              need_wlibio=no
1225          fi
1226       fi
1227       ;;
1228     xstdio | x | xno | xnone | xyes)
1229       # default
1230       CSTDIO_H=config/io/c_io_stdio.h
1231       BASIC_FILE_H=config/io/basic_file_stdio.h
1232       BASIC_FILE_CC=config/io/basic_file_stdio.cc
1233       AC_MSG_RESULT(stdio)
1234
1235       # We're not using stdio.
1236       need_libio=no
1237       need_wlibio=no
1238       ;;
1239     *)
1240       echo "$enable_cstdio is an unknown io package" 1>&2
1241       exit 1
1242       ;;
1243   esac
1244   AC_SUBST(CSTDIO_H)
1245   AC_SUBST(BASIC_FILE_H)
1246   AC_LINK_FILES($BASIC_FILE_CC, src/basic_file.cc)
1247
1248   # 2000-08-04 bkoz hack
1249   CCODECVT_C=config/io/c_io_libio_codecvt.c
1250   AC_SUBST(CCODECVT_C)
1251   # 2000-08-04 bkoz hack
1252
1253   AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1254                  test "$need_libio" = yes || test "$need_wlibio" = yes)
1255   AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1256   AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1257   if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1258     libio_la=../libio/libio.la
1259   else
1260     libio_la=
1261   fi
1262   AC_SUBST(libio_la)
1263 ])
1264
1265
1266 dnl
1267 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
1268 dnl We must stage the required headers so that they will be installed
1269 dnl with the library (unlike libgcc, the STL implementation is provided
1270 dnl solely within headers).  Since we must not inject random user-space
1271 dnl macro names into user-provided C++ code, we first stage into <file>-in
1272 dnl and process to <file> with an output command.  The reason for a two-
1273 dnl stage process here is to correctly handle $srcdir!=$objdir without
1274 dnl having to write complex code (the sed commands to clean the macro
1275 dnl namespace are complex and fragile enough as it is).  We must also
1276 dnl add a relative path so that -I- is supported properly.
1277 dnl
1278 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1279   AC_MSG_CHECKING([for thread model used by GCC])
1280   target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
1281   AC_MSG_RESULT([$target_thread_file])
1282
1283   if test $target_thread_file != single; then
1284     AC_DEFINE(HAVE_GTHR_DEFAULT)
1285     AC_DEFINE(_GLIBCPP_SUPPORTS_WEAK, __GXX_WEAK__)
1286   fi
1287
1288   glibcpp_thread_h=gthr-$target_thread_file.h
1289   AC_SUBST(glibcpp_thread_h)
1290 ])
1291
1292
1293 dnl
1294 dnl Check for exception handling support.  If an explicit enable/disable
1295 dnl sjlj exceptions is given, we don't have to detect.  Otherwise the
1296 dnl target may or may not support call frame exceptions.
1297 dnl
1298 dnl GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
1299 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1300 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1301 dnl
1302 dnl Define _GLIBCPP_SJLJ_EXCEPTIONS if the compiler is configured for it.
1303 dnl
1304 AC_DEFUN(GLIBCPP_ENABLE_SJLJ_EXCEPTIONS, [
1305   AC_MSG_CHECKING([for exception model to use])
1306   AC_LANG_SAVE
1307   AC_LANG_CPLUSPLUS
1308   AC_ARG_ENABLE(sjlj-exceptions,
1309   [  --enable-sjlj-exceptions  force use of builtin_setjmp for exceptions],
1310   [:],
1311   [dnl Botheration.  Now we've got to detect the exception model.
1312    dnl Link tests against libgcc.a are problematic since -- at least
1313    dnl as of this writing -- we've not been given proper -L bits for
1314    dnl single-tree newlib and libgloss.
1315    dnl
1316    dnl This is what AC_TRY_COMPILE would do if it didn't delete the
1317    dnl conftest files before we got a change to grep them first.
1318    cat > conftest.$ac_ext << EOF
1319 [#]line __oline__ "configure"
1320 struct S { ~S(); };
1321 void bar();
1322 void foo()
1323 {
1324   S s;
1325   bar();
1326 }
1327 EOF
1328    old_CXXFLAGS="$CXXFLAGS"
1329    CXXFLAGS=-S
1330    if AC_TRY_EVAL(ac_compile); then
1331      if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1332        enable_sjlj_exceptions=yes
1333      elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1334        enable_sjlj_exceptions=no
1335      fi
1336    fi
1337    CXXFLAGS="$old_CXXFLAGS"
1338    rm -f conftest*])
1339    if test x$enable_sjlj_exceptions = xyes; then
1340      AC_DEFINE(_GLIBCPP_SJLJ_EXCEPTIONS, 1,
1341         [Define if the compiler is configured for setjmp/longjmp exceptions.])
1342      ac_exception_model_name=sjlj
1343    elif test x$enable_sjlj_exceptions = xno; then
1344      ac_exception_model_name="call frame"
1345    else
1346      AC_MSG_ERROR([unable to detect exception model])
1347    fi
1348    AC_LANG_RESTORE
1349    AC_MSG_RESULT($ac_exception_model_name)
1350 ])
1351
1352
1353 dnl
1354 dnl Check for ISO/IEC 9899:1999 "C99" support.
1355 dnl
1356 dnl GLIBCPP_ENABLE_C99
1357 dnl --enable-c99 defines _GLIBCPP_USE_C99
1358 dnl --disable-c99 leaves _GLIBCPP_USE_C99 undefined
1359 dnl  +  Usage:  GLIBCPP_ENABLE_C99[(DEFAULT)]
1360 dnl       Where DEFAULT is either `yes' or `no'.  If omitted, it
1361 dnl       defaults to `no'.
1362 dnl  +  If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
1363 dnl
1364 dnl GLIBCPP_ENABLE_C99
1365 AC_DEFUN(GLIBCPP_ENABLE_C99, [dnl
1366   define([GLIBCPP_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
1367
1368   AC_ARG_ENABLE(c99,
1369   changequote(<<, >>)dnl
1370   <<--enable-c99            turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
1371   changequote([, ])dnl
1372   [case "$enableval" in
1373    yes) enable_c99=yes ;;
1374    no)  enable_c99=no ;;
1375    *)   AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
1376    esac],
1377   enable_c99=GLIBCPP_ENABLE_C99_DEFAULT)dnl
1378
1379   AC_LANG_SAVE
1380   AC_LANG_CPLUSPLUS
1381
1382   # Check for the existence of <math.h> functions used if C99 is enabled.
1383   ac_c99_math=yes;
1384   AC_MSG_CHECKING([for ISO C99 support in <math.h>])
1385   AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
1386   AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
1387   AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
1388   AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
1389   AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
1390   AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
1391   AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
1392   AC_TRY_COMPILE([#include <math.h>],
1393                  [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
1394   AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
1395   AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
1396   AC_TRY_COMPILE([#include <math.h>],
1397                  [islessgreater(0.0,0.0);],, [ac_c99_math=no])
1398   AC_TRY_COMPILE([#include <math.h>],
1399                  [isunordered(0.0,0.0);],, [ac_c99_math=no])
1400   AC_MSG_RESULT($ac_c99_math)
1401
1402   # Check for the existence in <stdio.h> of vscanf, et. al.
1403   ac_c99_stdio=yes;
1404   AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
1405   AC_TRY_COMPILE([#include <stdio.h>],
1406                  [snprintf("12", 0, "%i");],, [ac_c99_stdio=no])
1407   AC_TRY_COMPILE([#include <stdio.h>
1408                   #include <stdarg.h>
1409                   void foo(char* fmt, ...)
1410                   {va_list args; va_start(args, fmt);
1411                   vfscanf(stderr, "%i", args);}],
1412                   [],, [ac_c99_stdio=no])
1413   AC_TRY_COMPILE([#include <stdio.h>
1414                   #include <stdarg.h>
1415                   void foo(char* fmt, ...)
1416                   {va_list args; va_start(args, fmt);
1417                   vscanf("%i", args);}],
1418                   [],, [ac_c99_stdio=no])
1419   AC_TRY_COMPILE([#include <stdio.h>
1420                   #include <stdarg.h>
1421                   void foo(char* fmt, ...)
1422                   {va_list args; va_start(args, fmt);
1423                   vsnprintf(fmt, 0, "%i", args);}],
1424                   [],, [ac_c99_stdio=no])
1425   AC_TRY_COMPILE([#include <stdio.h>
1426                   #include <stdarg.h>
1427                   void foo(char* fmt, ...)
1428                   {va_list args; va_start(args, fmt);
1429                   vsscanf(fmt, "%i", args);}],
1430                   [],, [ac_c99_stdio=no])
1431   AC_MSG_RESULT($ac_c99_stdio)
1432
1433   # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1434   ac_c99_stdlib=yes;
1435   AC_MSG_CHECKING([for lldiv_t declaration])
1436   AC_CACHE_VAL(ac_c99_lldiv_t, [
1437   AC_TRY_COMPILE([#include <stdlib.h>],
1438                    [ lldiv_t mydivt;],
1439                    [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
1440   ])
1441   AC_MSG_RESULT($ac_c99_lldiv_t)
1442
1443   AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1444   AC_TRY_COMPILE([#include <stdlib.h>],
1445                  [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
1446   AC_TRY_COMPILE([#include <stdlib.h>],
1447                  [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
1448   AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
1449   AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
1450   AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
1451   AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no])
1452   if test x"$ac_c99_lldiv_t" = x"no"; then
1453     ac_c99_stdlib=no;
1454   fi;
1455   AC_MSG_RESULT($ac_c99_stdlib)
1456
1457   # Check for the existence of <wchar.h> functions used if C99 is enabled.
1458   # XXX the wchar.h checks should be rolled into the general C99 bits.
1459   ac_c99_wchar=yes;
1460   AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>])
1461   AC_TRY_COMPILE([#include <wchar.h>],
1462                  [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
1463   AC_TRY_COMPILE([#include <wchar.h>],
1464                  [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
1465   AC_TRY_COMPILE([#include <wchar.h>],
1466                  [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
1467   AC_MSG_RESULT($ac_c99_wchar)
1468
1469   AC_MSG_CHECKING([for enabled ISO C99 support])
1470   if test x"$ac_c99_math" = x"no" ||
1471      test x"$ac_c99_stdio" = x"no" ||
1472      test x"$ac_c99_stdlib" = x"no" ||
1473      test x"$ac_c99_wchar" = x"no"; then
1474     enable_c99=no;
1475   fi;
1476   AC_MSG_RESULT($enable_c99)
1477
1478   # Option parsed, now set things appropriately
1479   if test x"$enable_c99" = x"yes"; then
1480     AC_DEFINE(_GLIBCPP_USE_C99)
1481   fi
1482
1483   AC_LANG_RESTORE
1484 ])
1485
1486
1487 dnl
1488 dnl Check for template specializations for the 'long long' type extension.
1489 dnl The result determines only whether 'long long' I/O is enabled; things
1490 dnl like numeric_limits<> specializations are always available.
1491 dnl
1492 dnl GLIBCPP_ENABLE_LONG_LONG
1493 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1494 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1495 dnl  +  Usage:  GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1496 dnl       Where DEFAULT is either `yes' or `no'.  If omitted, it
1497 dnl       defaults to `no'.
1498 dnl  +  If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1499 dnl
1500 dnl GLIBCPP_ENABLE_LONG_LONG
1501 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1502   define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1503
1504   AC_ARG_ENABLE(long-long,
1505   changequote(<<, >>)dnl
1506   <<--enable-long-long      turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1507   changequote([, ])dnl
1508   [case "$enableval" in
1509    yes) enable_long_long=yes ;;
1510    no)  enable_long_long=no ;;
1511    *)   AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1512    esac],
1513   enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1514
1515   AC_LANG_SAVE
1516   AC_LANG_CPLUSPLUS
1517
1518   AC_MSG_CHECKING([for enabled long long I/O support])
1519   # iostreams require strtoll, strtoull to compile
1520   AC_TRY_COMPILE([#include <stdlib.h>],
1521                  [char* tmp; strtoll("gnu", &tmp, 10);],,[enable_long_long=no])
1522   AC_TRY_COMPILE([#include <stdlib.h>],
1523                  [char* tmp; strtoull("gnu", &tmp, 10);],,[enable_long_long=no])
1524
1525   # Option parsed, now set things appropriately
1526   if test x"$enable_long_long" = xyes; then
1527     AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1528   fi
1529   AC_MSG_RESULT($enable_long_long)
1530
1531   AC_LANG_RESTORE
1532 ])
1533
1534
1535 dnl
1536 dnl Check for what kind of C headers to use.
1537 dnl
1538 dnl GLIBCPP_ENABLE_CHEADERS
1539 dnl --enable-cheaders= [does stuff].
1540 dnl --disable-cheaders [does not do anything, really].
1541 dnl  +  This will eventually need to be 'c_shadow' by default.
1542 dnl  +  Usage:  GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1543 dnl       Where DEFAULT is either `c' or `c_std' or 'c_shadow'.
1544 dnl       If ommitted, it defaults to `c_std'.
1545 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1546 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1547 AC_MSG_CHECKING([for c header strategy to use])
1548 AC_ARG_ENABLE(cheaders,
1549 changequote(<<, >>)dnl
1550 <<  --enable-cheaders       construct "C" header files for g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1551 changequote([, ])
1552   [case "$enableval" in
1553    c)
1554         enable_cheaders=c
1555         ;;
1556    c_std)
1557         enable_cheaders=c_std
1558         ;;
1559    c_shadow)
1560         enable_cheaders=c_shadow
1561         ;;
1562    *)   AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1563         ;;
1564   esac],
1565   enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1566   AC_MSG_RESULT($enable_cheaders)
1567
1568   dnl Option parsed, now set things appropriately
1569   case "$enable_cheaders" in
1570     c_shadow)
1571         CSHADOW_FLAGS="-fno-builtin"
1572         C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_shadow'
1573         AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1574         ;;
1575     c_std)
1576         CSHADOW_FLAGS=""
1577         C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_std'
1578         ;;
1579     c)
1580         CSHADOW_FLAGS=""
1581         C_INCLUDE_DIR='${glibcpp_srcdir}/include/c'
1582         ;;
1583   esac
1584
1585   AC_SUBST(CSHADOW_FLAGS)
1586   AC_SUBST(C_INCLUDE_DIR)
1587   AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cheaders" = c_shadow)
1588 ])
1589
1590
1591 dnl
1592 dnl Check for wide character support.  Has the same effect as the option
1593 dnl in gcc's configure, but in a form that autoconf can mess with.
1594 dnl
1595 dnl GLIBCPP_ENABLE_C_MBCHAR
1596 dnl --enable-c-mbchar requests all the wchar_t stuff.
1597 dnl --disable-c-mbchar doesn't.
1598 dnl  +  Usage:  GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1599 dnl       Where DEFAULT is either `yes' or `no'.  If ommitted, it
1600 dnl       defaults to `no'.
1601 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1602 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1603 AC_ARG_ENABLE(c-mbchar,
1604 changequote(<<, >>)dnl
1605 <<  --enable-c-mbchar       enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1606 changequote([, ])dnl
1607 [case "$enableval" in
1608  yes) enable_c_mbchar=yes ;;
1609  no)  enable_c_mbchar=no ;;
1610  *)   AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1611  esac],
1612 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1613 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1614 ])
1615
1616
1617 dnl
1618 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1619 dnl
1620 dnl TOPLEVEL_INCLUDES
1621 dnl LIBMATH_INCLUDES
1622 dnl LIBSUPCXX_INCLUDES
1623 dnl LIBIO_INCLUDES
1624 dnl CSHADOW_INCLUDES
1625 dnl
1626 dnl GLIBCPP_EXPORT_INCLUDES
1627 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1628   # Root level of the build directory include sources.
1629   GLIBCPP_INCLUDES="-I${glibcpp_builddir}/include/${target_alias} -I${glibcpp_builddir}/include"
1630
1631   # Passed down for canadian crosses.
1632   if test x"$CANADIAN" = xyes; then
1633     TOPLEVEL_INCLUDES='-I$(includedir)'
1634   fi
1635
1636   LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1637
1638   LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1639
1640   if test x"$need_libio" = xyes; then
1641     LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1642     AC_SUBST(LIBIO_INCLUDES)
1643   fi
1644
1645   # Now, export this to all the little Makefiles....
1646   AC_SUBST(GLIBCPP_INCLUDES)
1647   AC_SUBST(TOPLEVEL_INCLUDES)
1648   AC_SUBST(LIBMATH_INCLUDES)
1649   AC_SUBST(LIBSUPCXX_INCLUDES)
1650 ])
1651
1652
1653 dnl
1654 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1655 dnl
1656 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1657   # Optimization flags that are probably a good idea for thrill-seekers. Just
1658   # uncomment the lines below and make, everything else is ready to go...
1659   # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1660   OPTIMIZE_CXXFLAGS=
1661   AC_SUBST(OPTIMIZE_CXXFLAGS)
1662
1663   WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1664   AC_SUBST(WARN_FLAGS)
1665 ])
1666
1667 dnl
1668 dnl  GLIBCPP_EXPORT_INSTALL_INFO
1669 dnl  calculates gxx_install_dir
1670 dnl  exports glibcpp_toolexecdir
1671 dnl  exports glibcpp_toolexeclibdir
1672 dnl  exports glibcpp_prefixdir
1673 dnl
1674 dnl Assumes cross_compiling bits already done, and with_cross_host in
1675 dnl particular
1676 dnl
1677 dnl GLIBCPP_EXPORT_INSTALL_INFO
1678 AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
1679 # Assumes glibcpp_builddir, glibcpp_srcdir are alreay set up and
1680 # exported correctly in GLIBCPP_CONFIGURE.
1681 glibcpp_toolexecdir=no
1682 glibcpp_toolexeclibdir=no
1683 glibcpp_prefixdir=${prefix}
1684
1685 AC_MSG_CHECKING([for interface version number])
1686 libstdcxx_interface=$INTERFACE
1687 AC_MSG_RESULT($libstdcxx_interface)
1688
1689 # Process the option --with-gxx-include-dir=<path to include-files directory>
1690 AC_MSG_CHECKING([for --with-gxx-include-dir])
1691 AC_ARG_WITH(gxx-include-dir,
1692 [  --with-gxx-include-dir  the installation directory for include files],
1693 [case "${withval}" in
1694   yes)
1695     AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1696     gxx_include_dir=no
1697     ;;
1698   no)
1699     gxx_include_dir=no
1700     ;;
1701   *)
1702     gxx_include_dir=${withval}
1703     ;;
1704 esac], [gxx_include_dir=no])
1705 AC_MSG_RESULT($gxx_include_dir)
1706
1707 # Process the option "--enable-version-specific-runtime-libs"
1708 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1709 AC_ARG_ENABLE(version-specific-runtime-libs,
1710 [  --enable-version-specific-runtime-libs    Specify that runtime libraries should be installed in a compiler-specific directory ],
1711 [case "$enableval" in
1712  yes) version_specific_libs=yes ;;
1713  no)  version_specific_libs=no ;;
1714  *)   AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
1715  esac],
1716 version_specific_libs=no)dnl
1717 # Option set, now we can test it.
1718 AC_MSG_RESULT($version_specific_libs)
1719
1720 if test $version_specific_libs = yes; then
1721   # Need the gcc compiler version to know where to install libraries
1722   # and header files if --enable-version-specific-runtime-libs option
1723   # is selected.
1724   changequote(,)dnl
1725   gcc_version_trigger=${srcdir}/../gcc/version.c
1726   gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
1727   gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1728   gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/g++
1729   glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1730   glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
1731   changequote([,])dnl
1732 fi
1733
1734 # Default case for install directory for include files.
1735 if test $version_specific_libs = no &&
1736    test $gxx_include_dir = no; then
1737   gxx_include_dir='$(prefix)'/include/g++-${libstdcxx_interface}
1738 fi
1739
1740 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
1741 # Install a library built with a cross compiler in tooldir, not libdir.
1742 if test x"$glibcpp_toolexecdir" = x"no"; then
1743   if test -n "$with_cross_host" &&
1744      test x"$with_cross_host" != x"no"; then
1745     glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
1746     glibcpp_toolexeclibdir='$(toolexecdir)/lib$(MULTISUBDIR)'
1747   else
1748     glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1749     glibcpp_toolexeclibdir='$(libdir)$(MULTISUBDIR)'
1750   fi
1751 fi
1752
1753 AC_MSG_CHECKING([for install location])
1754 AC_MSG_RESULT($gxx_include_dir)
1755
1756 AC_SUBST(glibcpp_prefixdir)
1757 AC_SUBST(gxx_include_dir)
1758 AC_SUBST(glibcpp_toolexecdir)
1759 AC_SUBST(glibcpp_toolexeclibdir)
1760 ])
1761
1762
1763 # Check for functions in math library.
1764 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1765 #
1766 # This file can be copied and used freely without restrictions.  It can
1767 # be used in projects which are not available under the GNU Public License
1768 # but which still want to provide support for the GNU gettext functionality.
1769 # Please note that the actual code is *not* freely available.
1770
1771 # serial 1
1772
1773 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1774 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1775 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1776 AC_SUBST(LIBMATHOBJS)dnl
1777 ])
1778
1779
1780
1781 dnl This macro searches for a GNU version of make.  If a match is found, the
1782 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1783 dnl set to "#". This is useful for  including a special features in a Makefile,
1784 dnl which cannot be handled by other versions of make.  The variable
1785 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1786 dnl the empty string otherwise.
1787 dnl
1788 dnl Here is an example of its use:
1789 dnl
1790 dnl Makefile.in might contain:
1791 dnl
1792 dnl     # A failsafe way of putting a dependency rule into a makefile
1793 dnl     $(DEPEND):
1794 dnl             $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1795 dnl
1796 dnl     @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1797 dnl     @ifGNUmake@ include $(DEPEND)
1798 dnl     @ifGNUmake@ endif
1799 dnl
1800 dnl Then configure.in would normally contain:
1801 dnl
1802 dnl     CHECK_GNU_MAKE()
1803 dnl     AC_OUTPUT(Makefile)
1804 dnl
1805 dnl Then perhaps to cause gnu make to override any other make, we could do
1806 dnl something like this (note that GNU make always looks for GNUmakefile first):
1807 dnl
1808 dnl     if  ! test x$_cv_gnu_make_command = x ; then
1809 dnl             mv Makefile GNUmakefile
1810 dnl             echo .DEFAULT: > Makefile ;
1811 dnl             echo \  $_cv_gnu_make_command \$@ >> Makefile;
1812 dnl     fi
1813 dnl
1814 dnl Then, if any (well almost any) other make is called, and GNU make also
1815 dnl exists, then the other make wraps the GNU make.
1816 dnl
1817 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1818 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1819 dnl
1820 dnl #### Changes for libstdc++-v3:  reformatting and linewrapping; prepending
1821 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1822 dnl #### conditional's subshell (" --version" is not a command), using a
1823 dnl #### different option to grep(1).
1824 dnl #### -pme
1825 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
1826 dnl #### ${MAKE:-make}).
1827 dnl #### -msokolov
1828 AC_DEFUN(
1829   GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1830           _cv_gnu_make_command='' ;
1831 dnl Search all the common names for GNU make
1832           for a in "${MAKE-make}" make gmake gnumake ; do
1833                   if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1834                   then
1835                           _cv_gnu_make_command=$a ;
1836                           break;
1837                   fi
1838           done ;
1839   ) ;
1840 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1841 dnl string, '#' otherwise
1842   if test  "x$_cv_gnu_make_command" != "x"  ; then
1843           ifGNUmake='' ;
1844   else
1845           ifGNUmake='#' ;
1846   fi
1847   AC_SUBST(ifGNUmake)
1848 ])
1849
1850
1851 dnl Check for headers for, and arguments to, the setrlimit() function.
1852 dnl Used only in testsuite_hooks.h.
1853 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT_ancilliary, [
1854   AC_TRY_COMPILE([#include <sys/resource.h>
1855                   #include <unistd.h>
1856                  ], [ int f = RLIMIT_$1 ; ],
1857                  [glibcpp_mresult=1], [glibcpp_mresult=0])
1858   AC_DEFINE_UNQUOTED(HAVE_MEMLIMIT_$1, $glibcpp_mresult,
1859                      [Only used in build directory testsuite_hooks.h.])
1860 ])
1861 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT, [
1862   setrlimit_have_headers=yes
1863   AC_CHECK_HEADERS(sys/resource.h unistd.h,
1864                    [],
1865                    setrlimit_have_headers=no)
1866   # If don't have the headers, then we can't run the tests now, and we
1867   # won't be seeing any of these during testsuite compilation.
1868   if test $setrlimit_have_headers = yes; then
1869     # Can't do these in a loop, else the resulting syntax is wrong.
1870     GLIBCPP_CHECK_SETRLIMIT_ancilliary(DATA)
1871     GLIBCPP_CHECK_SETRLIMIT_ancilliary(RSS)
1872     GLIBCPP_CHECK_SETRLIMIT_ancilliary(VMEM)
1873     GLIBCPP_CHECK_SETRLIMIT_ancilliary(AS)
1874
1875     # Check for rlimit, setrlimit.
1876     AC_CACHE_VAL(ac_setrlimit, [
1877       AC_TRY_COMPILE([#include <sys/resource.h>
1878                       #include <unistd.h>
1879                      ],
1880                      [ struct rlimit r; setrlimit(0, &r);],
1881                      [ac_setrlimit=yes], [ac_setrlimit=no])
1882     ])
1883   fi
1884
1885   AC_MSG_CHECKING([for testsuite memory limit support])
1886   if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then
1887     ac_mem_limits=yes
1888     AC_DEFINE(_GLIBCPP_MEM_LIMITS)
1889   else
1890     ac_mem_limits=no
1891   fi
1892   AC_MSG_RESULT($ac_mem_limits)
1893 ])
1894
1895
1896 dnl
1897 dnl Does any necessary configuration of the testsuite directory.  Generates
1898 dnl the testsuite_hooks.h header.
1899 dnl
1900 dnl GLIBCPP_CONFIGURE_TESTSUITE  [no args]
1901 AC_DEFUN(GLIBCPP_CONFIGURE_TESTSUITE, [
1902   GLIBCPP_CHECK_SETRLIMIT
1903 ])
1904
1905
1906 sinclude(../libtool.m4)
1907 dnl The lines below arrange for aclocal not to bring an installed
1908 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1909 dnl add a definition of LIBTOOL to Makefile.in.
1910 ifelse(,,,[AC_SUBST(LIBTOOL)
1911 AC_DEFUN([AM_PROG_LIBTOOL])
1912 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1913 AC_DEFUN([AC_PROG_LD])
1914 ])
1915
1916
1917 # Check whether LC_MESSAGES is available in <locale.h>.
1918 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1919 #
1920 # This file file be copied and used freely without restrictions.  It can
1921 # be used in projects which are not available under the GNU Public License
1922 # but which still want to provide support for the GNU gettext functionality.
1923 # Please note that the actual code is *not* freely available.
1924
1925 # serial 1
1926
1927 AC_DEFUN(AC_LC_MESSAGES, [
1928   AC_CHECK_HEADER(locale.h, [
1929     AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1930       [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1931        ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1932     if test $ac_cv_val_LC_MESSAGES = yes; then
1933       AC_DEFINE(HAVE_LC_MESSAGES)
1934     fi
1935   ])
1936 ])
1937
1938
1939 dnl
1940 dnl Check for whether the Boost-derived checks should be turned on.
1941 dnl
1942 dnl GLIBCPP_ENABLE_CONCEPT_CHECKS
1943 dnl --enable-concept-checks turns them on.
1944 dnl --disable-concept-checks leaves them off.
1945 dnl  +  Usage:  GLIBCPP_ENABLE_CONCEPT_CHECKS[(DEFAULT)]
1946 dnl       Where DEFAULT is either `yes' or `no'.  If ommitted, it
1947 dnl       defaults to `no'.
1948 AC_DEFUN(GLIBCPP_ENABLE_CONCEPT_CHECKS, [dnl
1949 define([GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT], ifelse($1, yes, yes, no))dnl
1950 AC_ARG_ENABLE(concept-checks,
1951 changequote(<<, >>)dnl
1952 <<  --enable-concept-checks use Boost-derived template checks [default=>>GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT],
1953 changequote([, ])dnl
1954 [case "$enableval" in
1955  yes) enable_concept_checks=yes ;;
1956  no)  enable_concept_checks=no ;;
1957  *)   AC_MSG_ERROR([Unknown argument to enable/disable concept checks]) ;;
1958  esac],
1959 enable_concept_checks=GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT)dnl
1960 dnl Option parsed, now set things appropriately
1961 if test x"$enable_concept_checks" = xyes; then
1962   AC_DEFINE(_GLIBCPP_CONCEPT_CHECKS)
1963 fi
1964 ])
1965
1966
1967
1968 #serial 1
1969 # This test replaces the one in autoconf.
1970 # Currently this macro should have the same name as the autoconf macro
1971 # because gettext's gettext.m4 (distributed in the automake package)
1972 # still uses it.  Otherwise, the use in gettext.m4 makes autoheader
1973 # give these diagnostics:
1974 #   configure.in:556: AC_TRY_COMPILE was called before AC_ISC_POSIX
1975 #   configure.in:556: AC_TRY_RUN was called before AC_ISC_POSIX
1976
1977 undefine([AC_ISC_POSIX])
1978
1979 AC_DEFUN([AC_ISC_POSIX],
1980   [
1981     dnl This test replaces the obsolescent AC_ISC_POSIX kludge.
1982     AC_CHECK_LIB(cposix, strerror, [LIBS="$LIBS -lcposix"])
1983   ]
1984 )
1985
1986 # Add --enable-maintainer-mode option to configure.
1987 # From Jim Meyering
1988
1989 # serial 1
1990
1991 AC_DEFUN([AM_MAINTAINER_MODE],
1992 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1993   dnl maintainer-mode is disabled by default
1994   AC_ARG_ENABLE(maintainer-mode,
1995 [  --enable-maintainer-mode enable make rules and dependencies not useful
1996                           (and sometimes confusing) to the casual installer],
1997       USE_MAINTAINER_MODE=$enableval,
1998       USE_MAINTAINER_MODE=no)
1999   AC_MSG_RESULT($USE_MAINTAINER_MODE)
2000   AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
2001   MAINT=$MAINTAINER_MODE_TRUE
2002   AC_SUBST(MAINT)dnl
2003 ]
2004 )
2005
2006 # Define a conditional.
2007
2008 AC_DEFUN([AM_CONDITIONAL],
2009 [AC_SUBST($1_TRUE)
2010 AC_SUBST($1_FALSE)
2011 if $2; then
2012   $1_TRUE=
2013   $1_FALSE='#'
2014 else
2015   $1_TRUE='#'
2016   $1_FALSE=
2017 fi])
2018
2019 # Macro to add for using GNU gettext.
2020 # Ulrich Drepper <drepper@cygnus.com>, 1995.
2021 #
2022 # This file can be copied and used freely without restrictions.  It can
2023 # be used in projects which are not available under the GNU Public License
2024 # but which still want to provide support for the GNU gettext functionality.
2025 # Please note that the actual code is *not* freely available.
2026
2027 # serial 9
2028
2029 dnl Usage: AM_WITH_NLS([TOOLSYMBOL], [NEEDSYMBOL], [LIBDIR]).
2030 dnl If TOOLSYMBOL is specified and is 'use-libtool', then a libtool library
2031 dnl    $(top_builddir)/intl/libintl.la will be created (shared and/or static,
2032 dnl    depending on --{enable,disable}-{shared,static} and on the presence of
2033 dnl    AM-DISABLE-SHARED). Otherwise, a static library
2034 dnl    $(top_builddir)/intl/libintl.a will be created.
2035 dnl If NEEDSYMBOL is specified and is 'need-ngettext', then GNU gettext
2036 dnl    implementations (in libc or libintl) without the ngettext() function
2037 dnl    will be ignored.
2038 dnl LIBDIR is used to find the intl libraries.  If empty,
2039 dnl    the value `$(top_builddir)/intl/' is used.
2040 dnl
2041 dnl The result of the configuration is one of three cases:
2042 dnl 1) GNU gettext, as included in the intl subdirectory, will be compiled
2043 dnl    and used.
2044 dnl    Catalog format: GNU --> install in $(datadir)
2045 dnl    Catalog extension: .mo after installation, .gmo in source tree
2046 dnl 2) GNU gettext has been found in the system's C library.
2047 dnl    Catalog format: GNU --> install in $(datadir)
2048 dnl    Catalog extension: .mo after installation, .gmo in source tree
2049 dnl 3) No internationalization, always use English msgid.
2050 dnl    Catalog format: none
2051 dnl    Catalog extension: none
2052 dnl The use of .gmo is historical (it was needed to avoid overwriting the
2053 dnl GNU format catalogs when building on a platform with an X/Open gettext),
2054 dnl but we keep it in order not to force irrelevant filename changes on the
2055 dnl maintainers.
2056 dnl
2057 AC_DEFUN([AM_WITH_NLS],
2058   [AC_MSG_CHECKING([whether NLS is requested])
2059     dnl Default is enabled NLS
2060     AC_ARG_ENABLE(nls,
2061       [  --disable-nls           do not use Native Language Support],
2062       USE_NLS=$enableval, USE_NLS=yes)
2063     AC_MSG_RESULT($USE_NLS)
2064     AC_SUBST(USE_NLS)
2065
2066     BUILD_INCLUDED_LIBINTL=no
2067     USE_INCLUDED_LIBINTL=no
2068     INTLLIBS=
2069
2070     dnl If we use NLS figure out what method
2071     if test "$USE_NLS" = "yes"; then
2072       AC_DEFINE(ENABLE_NLS, 1,
2073         [Define to 1 if translation of program messages to the user's native language
2074    is requested.])
2075       AC_MSG_CHECKING([whether included gettext is requested])
2076       AC_ARG_WITH(included-gettext,
2077         [  --with-included-gettext use the GNU gettext library included here],
2078         nls_cv_force_use_gnu_gettext=$withval,
2079         nls_cv_force_use_gnu_gettext=no)
2080       AC_MSG_RESULT($nls_cv_force_use_gnu_gettext)
2081
2082       nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
2083       if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
2084         dnl User does not insist on using GNU NLS library.  Figure out what
2085         dnl to use.  If GNU gettext is available we use this.  Else we have
2086         dnl to fall back to GNU NLS library.
2087         CATOBJEXT=NONE
2088
2089         dnl Add a version number to the cache macros.
2090         define(gt_cv_func_gnugettext_libc, [gt_cv_func_gnugettext]ifelse([$2], need-ngettext, 2, 1)[_libc])
2091         define(gt_cv_func_gnugettext_libintl, [gt_cv_func_gnugettext]ifelse([$2], need-ngettext, 2, 1)[_libintl])
2092
2093         AC_CHECK_HEADER(libintl.h,
2094           [AC_CACHE_CHECK([for GNU gettext in libc], gt_cv_func_gnugettext_libc,
2095             [AC_TRY_LINK([#include <libintl.h>
2096 extern int _nl_msg_cat_cntr;],
2097                [bindtextdomain ("", "");
2098 return (int) gettext ("")]ifelse([$2], need-ngettext, [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr],
2099                gt_cv_func_gnugettext_libc=yes,
2100                gt_cv_func_gnugettext_libc=no)])
2101
2102            if test "$gt_cv_func_gnugettext_libc" != "yes"; then
2103              AC_CACHE_CHECK([for GNU gettext in libintl],
2104                gt_cv_func_gnugettext_libintl,
2105                [gt_save_LIBS="$LIBS"
2106                 LIBS="$LIBS -lintl $LIBICONV"
2107                 AC_TRY_LINK([#include <libintl.h>
2108 extern int _nl_msg_cat_cntr;],
2109                   [bindtextdomain ("", "");
2110 return (int) gettext ("")]ifelse([$2], need-ngettext, [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr],
2111                   gt_cv_func_gnugettext_libintl=yes,
2112                   gt_cv_func_gnugettext_libintl=no)
2113                 LIBS="$gt_save_LIBS"])
2114            fi
2115
2116            dnl If an already present or preinstalled GNU gettext() is found,
2117            dnl use it.  But if this macro is used in GNU gettext, and GNU
2118            dnl gettext is already preinstalled in libintl, we update this
2119            dnl libintl.  (Cf. the install rule in intl/Makefile.in.)
2120            if test "$gt_cv_func_gnugettext_libc" = "yes" \
2121               || { test "$gt_cv_func_gnugettext_libintl" = "yes" \
2122                    && test "$PACKAGE" != gettext; }; then
2123              AC_DEFINE(HAVE_GETTEXT, 1,
2124                [Define if the GNU gettext() function is already present or preinstalled.])
2125
2126              if test "$gt_cv_func_gnugettext_libintl" = "yes"; then
2127                dnl If iconv() is in a separate libiconv library, then anyone
2128                dnl linking with libintl{.a,.so} also needs to link with
2129                dnl libiconv.
2130                INTLLIBS="-lintl $LIBICONV"
2131              fi
2132
2133              gt_save_LIBS="$LIBS"
2134              LIBS="$LIBS $INTLLIBS"
2135              AC_CHECK_FUNCS(dcgettext)
2136              LIBS="$gt_save_LIBS"
2137
2138              AM_PATH_PROG_WITH_TEST(MSGFMT, msgfmt,
2139                [test -z "`$ac_dir/$ac_word -h 2>&1 | grep 'dv '`"], no)dnl
2140              if test "$MSGFMT" != "no"; then
2141                AC_PATH_PROG(GMSGFMT, gmsgfmt, $MSGFMT)
2142              fi
2143
2144              AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext,
2145                [test -z "`$ac_dir/$ac_word -h 2>&1 | grep '(HELP)'`"], :)
2146
2147              CATOBJEXT=.gmo
2148            fi
2149         ])
2150
2151         if test "$CATOBJEXT" = "NONE"; then
2152           dnl GNU gettext is not found in the C library.
2153           dnl Fall back on GNU gettext library.
2154           nls_cv_use_gnu_gettext=yes
2155         fi
2156       fi
2157
2158       if test "$nls_cv_use_gnu_gettext" = "yes"; then
2159         dnl Mark actions used to generate GNU NLS library.
2160         INTLOBJS="\$(GETTOBJS)"
2161         AM_PATH_PROG_WITH_TEST(MSGFMT, msgfmt,
2162           [test -z "`$ac_dir/$ac_word -h 2>&1 | grep 'dv '`"], msgfmt)
2163         AC_PATH_PROG(GMSGFMT, gmsgfmt, $MSGFMT)
2164         AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext,
2165           [test -z "`$ac_dir/$ac_word -h 2>&1 | grep '(HELP)'`"], :)
2166         AC_SUBST(MSGFMT)
2167         BUILD_INCLUDED_LIBINTL=yes
2168         USE_INCLUDED_LIBINTL=yes
2169         CATOBJEXT=.gmo
2170         INTLLIBS="ifelse([$3],[],\$(top_builddir)/intl,[$3])/libintl.ifelse([$1], use-libtool, [l], [])a $LIBICONV"
2171         LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
2172       fi
2173
2174       dnl Test whether we really found GNU xgettext.
2175       if test "$XGETTEXT" != ":"; then
2176         dnl If it is no GNU xgettext we define it as : so that the
2177         dnl Makefiles still can work.
2178         if $XGETTEXT --omit-header /dev/null 2> /dev/null; then
2179           : ;
2180         else
2181           AC_MSG_RESULT(
2182             [found xgettext program is not GNU xgettext; ignore it])
2183           XGETTEXT=":"
2184         fi
2185       fi
2186
2187       dnl We need to process the po/ directory.
2188       POSUB=po
2189     fi
2190     AC_OUTPUT_COMMANDS(
2191      [for ac_file in $CONFIG_FILES; do
2192         # Support "outfile[:infile[:infile...]]"
2193         case "$ac_file" in
2194           *:*) ac_file=`echo "$ac_file"|sed 's%:.*%%'` ;;
2195         esac
2196         # PO directories have a Makefile.in generated from Makefile.in.in.
2197         case "$ac_file" in */Makefile.in)
2198           # Adjust a relative srcdir.
2199           ac_dir=`echo "$ac_file"|sed 's%/[^/][^/]*$%%'`
2200           ac_dir_suffix="/`echo "$ac_dir"|sed 's%^\./%%'`"
2201           ac_dots=`echo "$ac_dir_suffix"|sed 's%/[^/]*%../%g'`
2202           case "$ac_given_srcdir" in
2203             .)  top_srcdir=`echo $ac_dots|sed 's%/$%%'` ;;
2204             /*) top_srcdir="$ac_given_srcdir" ;;
2205             *)  top_srcdir="$ac_dots$ac_given_srcdir" ;;
2206           esac
2207           if test -f "$ac_given_srcdir/$ac_dir/POTFILES.in"; then
2208             rm -f "$ac_dir/POTFILES"
2209             echo creating "$ac_dir/POTFILES"
2210             sed -e "/^#/d" -e "/^[      ]*\$/d" -e "s,.*,     $top_srcdir/& \\\\," -e "\$s/\(.*\) \\\\/\1/" < "$ac_given_srcdir/$ac_dir/POTFILES.in" > "$ac_dir/POTFILES"
2211             echo creating "$ac_dir/Makefile"
2212             sed -e "/POTFILES =/r $ac_dir/POTFILES" "$ac_dir/Makefile.in" > "$ac_dir/Makefile"
2213           fi
2214           ;;
2215         esac
2216       done])
2217
2218
2219     dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL
2220     dnl to 'yes' because some of the testsuite requires it.
2221     if test "$PACKAGE" = gettext; then
2222       BUILD_INCLUDED_LIBINTL=yes
2223     fi
2224
2225     dnl intl/plural.c is generated from intl/plural.y. It requires bison,
2226     dnl because plural.y uses bison specific features. It requires at least
2227     dnl bison-1.26 because earlier versions generate a plural.c that doesn't
2228     dnl compile.
2229     dnl bison is only needed for the maintainer (who touches plural.y). But in
2230     dnl order to avoid separate Makefiles or --enable-maintainer-mode, we put
2231     dnl the rule in general Makefile. Now, some people carelessly touch the
2232     dnl files or have a broken "make" program, hence the plural.c rule will
2233     dnl sometimes fire. To avoid an error, defines BISON to ":" if it is not
2234     dnl present or too old.
2235     AC_CHECK_PROGS([INTLBISON], [bison])
2236     if test -z "$INTLBISON"; then
2237       ac_verc_fail=yes
2238     else
2239       dnl Found it, now check the version.
2240       AC_MSG_CHECKING([version of bison])
2241 changequote(<<,>>)dnl
2242       ac_prog_version=`$INTLBISON --version 2>&1 | sed -n 's/^.*GNU Bison .* \([0-9]*\.[0-9.]*\).*$/\1/p'`
2243       case $ac_prog_version in
2244         '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
2245         1.2[6-9]* | 1.[3-9][0-9]* | [2-9].*)
2246 changequote([,])dnl
2247            ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
2248         *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
2249       esac
2250       AC_MSG_RESULT([$ac_prog_version])
2251     fi
2252     if test $ac_verc_fail = yes; then
2253       INTLBISON=:
2254     fi
2255
2256     dnl These rules are solely for the distribution goal.  While doing this
2257     dnl we only have to keep exactly one list of the available catalogs
2258     dnl in configure.in.
2259     for lang in $ALL_LINGUAS; do
2260       GMOFILES="$GMOFILES $lang.gmo"
2261       POFILES="$POFILES $lang.po"
2262     done
2263
2264     dnl Make all variables we use known to autoconf.
2265     AC_SUBST(BUILD_INCLUDED_LIBINTL)
2266     AC_SUBST(USE_INCLUDED_LIBINTL)
2267     AC_SUBST(CATALOGS)
2268     AC_SUBST(CATOBJEXT)
2269     AC_SUBST(GMOFILES)
2270     AC_SUBST(INTLLIBS)
2271     AC_SUBST(INTLOBJS)
2272     AC_SUBST(POFILES)
2273     AC_SUBST(POSUB)
2274
2275     dnl For backward compatibility. Some configure.ins may be using this.
2276     nls_cv_header_intl=
2277     nls_cv_header_libgt=
2278
2279     dnl For backward compatibility. Some Makefiles may be using this.
2280     DATADIRNAME=share
2281     AC_SUBST(DATADIRNAME)
2282
2283     dnl For backward compatibility. Some Makefiles may be using this.
2284     INSTOBJEXT=.mo
2285     AC_SUBST(INSTOBJEXT)
2286
2287     dnl For backward compatibility. Some Makefiles may be using this.
2288     GENCAT=gencat
2289     AC_SUBST(GENCAT)
2290   ])
2291
2292 dnl Usage: Just like AM_WITH_NLS, which see.
2293 AC_DEFUN([AM_GNU_GETTEXT],
2294   [AC_REQUIRE([AC_PROG_MAKE_SET])dnl
2295    AC_REQUIRE([AC_PROG_CC])dnl
2296    AC_REQUIRE([AC_CANONICAL_HOST])dnl
2297    AC_REQUIRE([AC_PROG_RANLIB])dnl
2298    AC_REQUIRE([AC_ISC_POSIX])dnl
2299    AC_REQUIRE([AC_HEADER_STDC])dnl
2300    AC_REQUIRE([AC_C_CONST])dnl
2301    AC_REQUIRE([AC_C_INLINE])dnl
2302    AC_REQUIRE([AC_TYPE_OFF_T])dnl
2303    AC_REQUIRE([AC_TYPE_SIZE_T])dnl
2304    AC_REQUIRE([AC_FUNC_ALLOCA])dnl
2305    AC_REQUIRE([AC_FUNC_MMAP])dnl
2306    AC_REQUIRE([jm_GLIBC21])dnl
2307
2308    AC_CHECK_HEADERS([argz.h limits.h locale.h nl_types.h malloc.h stddef.h \
2309 stdlib.h string.h unistd.h sys/param.h])
2310    AC_CHECK_FUNCS([feof_unlocked fgets_unlocked getcwd getegid geteuid \
2311 getgid getuid mempcpy munmap putenv setenv setlocale stpcpy strchr strcasecmp \
2312 strdup strtoul tsearch __argz_count __argz_stringify __argz_next])
2313
2314    AM_ICONV
2315    AM_LANGINFO_CODESET
2316    AM_LC_MESSAGES
2317    AM_WITH_NLS([$1],[$2],[$3])
2318
2319    if test "x$CATOBJEXT" != "x"; then
2320      if test "x$ALL_LINGUAS" = "x"; then
2321        LINGUAS=
2322      else
2323        AC_MSG_CHECKING(for catalogs to be installed)
2324        NEW_LINGUAS=
2325        for presentlang in $ALL_LINGUAS; do
2326          useit=no
2327          for desiredlang in ${LINGUAS-$ALL_LINGUAS}; do
2328            # Use the presentlang catalog if desiredlang is
2329            #   a. equal to presentlang, or
2330            #   b. a variant of presentlang (because in this case,
2331            #      presentlang can be used as a fallback for messages
2332            #      which are not translated in the desiredlang catalog).
2333            case "$desiredlang" in
2334              "$presentlang"*) useit=yes;;
2335            esac
2336          done
2337          if test $useit = yes; then
2338            NEW_LINGUAS="$NEW_LINGUAS $presentlang"
2339          fi
2340        done
2341        LINGUAS=$NEW_LINGUAS
2342        AC_MSG_RESULT($LINGUAS)
2343      fi
2344
2345      dnl Construct list of names of catalog files to be constructed.
2346      if test -n "$LINGUAS"; then
2347        for lang in $LINGUAS; do CATALOGS="$CATALOGS $lang$CATOBJEXT"; done
2348      fi
2349    fi
2350
2351    dnl If the AC_CONFIG_AUX_DIR macro for autoconf is used we possibly
2352    dnl find the mkinstalldirs script in another subdir but $(top_srcdir).
2353    dnl Try to locate is.
2354    MKINSTALLDIRS=
2355    if test -n "$ac_aux_dir"; then
2356      MKINSTALLDIRS="$ac_aux_dir/mkinstalldirs"
2357    fi
2358    if test -z "$MKINSTALLDIRS"; then
2359      MKINSTALLDIRS="\$(top_srcdir)/mkinstalldirs"
2360    fi
2361    AC_SUBST(MKINSTALLDIRS)
2362
2363    dnl Enable libtool support if the surrounding package wishes it.
2364    INTL_LIBTOOL_SUFFIX_PREFIX=ifelse([$1], use-libtool, [l], [])
2365    AC_SUBST(INTL_LIBTOOL_SUFFIX_PREFIX)
2366   ])
2367
2368 # Search path for a program which passes the given test.
2369 # Ulrich Drepper <drepper@cygnus.com>, 1996.
2370 #
2371 # This file can be copied and used freely without restrictions.  It can
2372 # be used in projects which are not available under the GNU Public License
2373 # but which still want to provide support for the GNU gettext functionality.
2374 # Please note that the actual code is *not* freely available.
2375
2376 # serial 1
2377
2378 dnl AM_PATH_PROG_WITH_TEST(VARIABLE, PROG-TO-CHECK-FOR,
2379 dnl   TEST-PERFORMED-ON-FOUND_PROGRAM [, VALUE-IF-NOT-FOUND [, PATH]])
2380 AC_DEFUN([AM_PATH_PROG_WITH_TEST],
2381 [# Extract the first word of "$2", so it can be a program name with args.
2382 set dummy $2; ac_word=[$]2
2383 AC_MSG_CHECKING([for $ac_word])
2384 AC_CACHE_VAL(ac_cv_path_$1,
2385 [case "[$]$1" in
2386   /*)
2387   ac_cv_path_$1="[$]$1" # Let the user override the test with a path.
2388   ;;
2389   *)
2390   IFS="${IFS=   }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
2391   for ac_dir in ifelse([$5], , $PATH, [$5]); do
2392     test -z "$ac_dir" && ac_dir=.
2393     if test -f $ac_dir/$ac_word; then
2394       if [$3]; then
2395         ac_cv_path_$1="$ac_dir/$ac_word"
2396         break
2397       fi
2398     fi
2399   done
2400   IFS="$ac_save_ifs"
2401 dnl If no 4th arg is given, leave the cache variable unset,
2402 dnl so AC_PATH_PROGS will keep looking.
2403 ifelse([$4], , , [  test -z "[$]ac_cv_path_$1" && ac_cv_path_$1="$4"
2404 ])dnl
2405   ;;
2406 esac])dnl
2407 $1="$ac_cv_path_$1"
2408 if test -n "[$]$1"; then
2409   AC_MSG_RESULT([$]$1)
2410 else
2411   AC_MSG_RESULT(no)
2412 fi
2413 AC_SUBST($1)dnl
2414 ])
2415
2416 #serial 2
2417
2418 # Test for the GNU C Library, version 2.1 or newer.
2419 # From Bruno Haible.
2420
2421 AC_DEFUN([jm_GLIBC21],
2422   [
2423     AC_CACHE_CHECK(whether we are using the GNU C Library 2.1 or newer,
2424       ac_cv_gnu_library_2_1,
2425       [AC_EGREP_CPP([Lucky GNU user],
2426         [
2427 #include <features.h>
2428 #ifdef __GNU_LIBRARY__
2429  #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)
2430   Lucky GNU user
2431  #endif
2432 #endif
2433         ],
2434         ac_cv_gnu_library_2_1=yes,
2435         ac_cv_gnu_library_2_1=no)
2436       ]
2437     )
2438     AC_SUBST(GLIBC21)
2439     GLIBC21="$ac_cv_gnu_library_2_1"
2440   ]
2441 )
2442
2443 #serial AM2
2444
2445 dnl From Bruno Haible.
2446
2447 AC_DEFUN([AM_ICONV],
2448 [
2449   dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
2450   dnl those with the standalone portable GNU libiconv installed).
2451
2452   AC_ARG_WITH([libiconv-prefix],
2453 [  --with-libiconv-prefix=DIR  search for libiconv in DIR/include and DIR/lib], [
2454     for dir in `echo "$withval" | tr : ' '`; do
2455       if test -d $dir/include; then CPPFLAGS="$CPPFLAGS -I$dir/include"; fi
2456       if test -d $dir/lib; then LDFLAGS="$LDFLAGS -L$dir/lib"; fi
2457     done
2458    ])
2459
2460   AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [
2461     am_cv_func_iconv="no, consider installing GNU libiconv"
2462     am_cv_lib_iconv=no
2463     AC_TRY_LINK([#include <stdlib.h>
2464 #include <iconv.h>],
2465       [iconv_t cd = iconv_open("","");
2466        iconv(cd,NULL,NULL,NULL,NULL);
2467        iconv_close(cd);],
2468       am_cv_func_iconv=yes)
2469     if test "$am_cv_func_iconv" != yes; then
2470       am_save_LIBS="$LIBS"
2471       LIBS="$LIBS -liconv"
2472       AC_TRY_LINK([#include <stdlib.h>
2473 #include <iconv.h>],
2474         [iconv_t cd = iconv_open("","");
2475          iconv(cd,NULL,NULL,NULL,NULL);
2476          iconv_close(cd);],
2477         am_cv_lib_iconv=yes
2478         am_cv_func_iconv=yes)
2479       LIBS="$am_save_LIBS"
2480     fi
2481   ])
2482   if test "$am_cv_func_iconv" = yes; then
2483     AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
2484     AC_MSG_CHECKING([for iconv declaration])
2485     AC_CACHE_VAL(am_cv_proto_iconv, [
2486       AC_TRY_COMPILE([
2487 #include <stdlib.h>
2488 #include <iconv.h>
2489 extern
2490 #ifdef __cplusplus
2491 "C"
2492 #endif
2493 #if defined(__STDC__) || defined(__cplusplus)
2494 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
2495 #else
2496 size_t iconv();
2497 #endif
2498 ], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const")
2499       am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
2500     am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
2501     AC_MSG_RESULT([$]{ac_t:-
2502          }[$]am_cv_proto_iconv)
2503     AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1,
2504       [Define as const if the declaration of iconv() needs const.])
2505   fi
2506   LIBICONV=
2507   if test "$am_cv_lib_iconv" = yes; then
2508     LIBICONV="-liconv"
2509   fi
2510   AC_SUBST(LIBICONV)
2511 ])
2512
2513 #serial AM1
2514
2515 dnl From Bruno Haible.
2516
2517 AC_DEFUN([AM_LANGINFO_CODESET],
2518 [
2519   AC_CACHE_CHECK([for nl_langinfo and CODESET], am_cv_langinfo_codeset,
2520     [AC_TRY_LINK([#include <langinfo.h>],
2521       [char* cs = nl_langinfo(CODESET);],
2522       am_cv_langinfo_codeset=yes,
2523       am_cv_langinfo_codeset=no)
2524     ])
2525   if test $am_cv_langinfo_codeset = yes; then
2526     AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
2527       [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
2528   fi
2529 ])
2530
2531 # Check whether LC_MESSAGES is available in <locale.h>.
2532 # Ulrich Drepper <drepper@cygnus.com>, 1995.
2533 #
2534 # This file can be copied and used freely without restrictions.  It can
2535 # be used in projects which are not available under the GNU Public License
2536 # but which still want to provide support for the GNU gettext functionality.
2537 # Please note that the actual code is *not* freely available.
2538
2539 # serial 2
2540
2541 AC_DEFUN([AM_LC_MESSAGES],
2542   [if test $ac_cv_header_locale_h = yes; then
2543     AC_CACHE_CHECK([for LC_MESSAGES], am_cv_val_LC_MESSAGES,
2544       [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
2545        am_cv_val_LC_MESSAGES=yes, am_cv_val_LC_MESSAGES=no)])
2546     if test $am_cv_val_LC_MESSAGES = yes; then
2547       AC_DEFINE(HAVE_LC_MESSAGES, 1,
2548         [Define if your <locale.h> file defines LC_MESSAGES.])
2549     fi
2550   fi])
2551
2552 # Do all the work for Automake.  This macro actually does too much --
2553 # some checks are only needed if your package does certain things.
2554 # But this isn't really a big deal.
2555
2556 # serial 1
2557
2558 dnl Usage:
2559 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
2560
2561 AC_DEFUN([AM_INIT_AUTOMAKE],
2562 [AC_REQUIRE([AC_PROG_INSTALL])
2563 PACKAGE=[$1]
2564 AC_SUBST(PACKAGE)
2565 VERSION=[$2]
2566 AC_SUBST(VERSION)
2567 dnl test to see if srcdir already configured
2568 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
2569   AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
2570 fi
2571 ifelse([$3],,
2572 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
2573 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
2574 AC_REQUIRE([AM_SANITY_CHECK])
2575 AC_REQUIRE([AC_ARG_PROGRAM])
2576 dnl FIXME This is truly gross.
2577 missing_dir=`cd $ac_aux_dir && pwd`
2578 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
2579 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
2580 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
2581 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
2582 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
2583 AC_REQUIRE([AC_PROG_MAKE_SET])])
2584
2585 #
2586 # Check to make sure that the build environment is sane.
2587 #
2588
2589 AC_DEFUN([AM_SANITY_CHECK],
2590 [AC_MSG_CHECKING([whether build environment is sane])
2591 # Just in case
2592 sleep 1
2593 echo timestamp > conftestfile
2594 # Do `set' in a subshell so we don't clobber the current shell's
2595 # arguments.  Must try -L first in case configure is actually a
2596 # symlink; some systems play weird games with the mod time of symlinks
2597 # (eg FreeBSD returns the mod time of the symlink's containing
2598 # directory).
2599 if (
2600    set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
2601    if test "[$]*" = "X"; then
2602       # -L didn't work.
2603       set X `ls -t $srcdir/configure conftestfile`
2604    fi
2605    if test "[$]*" != "X $srcdir/configure conftestfile" \
2606       && test "[$]*" != "X conftestfile $srcdir/configure"; then
2607
2608       # If neither matched, then we have a broken ls.  This can happen
2609       # if, for instance, CONFIG_SHELL is bash and it inherits a
2610       # broken ls alias from the environment.  This has actually
2611       # happened.  Such a system could not be considered "sane".
2612       AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
2613 alias in your environment])
2614    fi
2615
2616    test "[$]2" = conftestfile
2617    )
2618 then
2619    # Ok.
2620    :
2621 else
2622    AC_MSG_ERROR([newly created file is older than distributed files!
2623 Check your system clock])
2624 fi
2625 rm -f conftest*
2626 AC_MSG_RESULT(yes)])
2627
2628 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
2629 dnl The program must properly implement --version.
2630 AC_DEFUN([AM_MISSING_PROG],
2631 [AC_MSG_CHECKING(for working $2)
2632 # Run test in a subshell; some versions of sh will print an error if
2633 # an executable is not found, even if stderr is redirected.
2634 # Redirect stdin to placate older versions of autoconf.  Sigh.
2635 if ($2 --version) < /dev/null > /dev/null 2>&1; then
2636    $1=$2
2637    AC_MSG_RESULT(found)
2638 else
2639    $1="$3/missing $2"
2640    AC_MSG_RESULT(missing)
2641 fi
2642 AC_SUBST($1)])
2643
2644 # Like AC_CONFIG_HEADER, but automatically create stamp file.
2645
2646 AC_DEFUN([AM_CONFIG_HEADER],
2647 [AC_PREREQ([2.12])
2648 AC_CONFIG_HEADER([$1])
2649 dnl When config.status generates a header, we must update the stamp-h file.
2650 dnl This file resides in the same directory as the config header
2651 dnl that is generated.  We must strip everything past the first ":",
2652 dnl and everything past the last "/".
2653 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
2654 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
2655 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
2656 <<am_indx=1
2657 for am_file in <<$1>>; do
2658   case " <<$>>CONFIG_HEADERS " in
2659   *" <<$>>am_file "*<<)>>
2660     echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
2661     ;;
2662   esac
2663   am_indx=`expr "<<$>>am_indx" + 1`
2664 done<<>>dnl>>)
2665 changequote([,]))])
2666