libstdc++-v3/aclocal.m4

   1 dnl aclocal.m4 generated automatically by aclocal 1.4
   2
   3 dnl Copyright (C) 1994, 1995-8, 1999 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 $(EXEEXT).  Moreover, the test for EXEEXT normally
 187   # fails, because we are probably configuring with a cross compiler
 188   # which cant create executables.  So we include AC_EXEEXT to keep
 189   # automake happy, but we dont execute it, since we dont care about
 190   # the result.
 191   if false; then
 192     # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands
 193     # to nothing, so nothing would remain between `then' and `fi' if it
 194     # were not for the `:' below.
 195     :
 196     AC_EXEEXT
 197   fi
 198
 199   . [$]{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       CMESSAGES_H=config/locale/messages_members_generic.h
1074       CMESSAGES_CC=config/locale/messages_members_generic.cc
1075       CCOLLATE_CC=config/locale/collate_specializations_generic.cc
1076       ;;
1077     xgnu)
1078       AC_MSG_RESULT(gnu)
1079
1080       # Declare intention to use gettext, and add support for specific
1081       # languages.
1082       # For some reason, ALL_LINGUAS has to be before AM_GNU_GETTEXT
1083       ALL_LINGUAS="de fr"
1084       # Don't call AM_GNU_GETTEXT here. Instead, assume glibc.
1085       # Need to deal with MSGFMT, USE_NLS, and glibcpp_[P,M]OFILES
1086       USE_NLS=yes
1087
1088       # Export the build objects.
1089       for ling in $ALL_LINGUAS; do \
1090         glibcpp_MOFILES="$glibcpp_MOFILES $ling.mo"; \
1091         glibcpp_POFILES="$glibcpp_POFILES $ling.po"; \
1092       done
1093       AC_SUBST(glibcpp_MOFILES)
1094       AC_SUBST(glibcpp_POFILES)
1095
1096       CLOCALE_H=config/locale/c_locale_gnu.h
1097       CLOCALE_CC=config/locale/c_locale_gnu.cc
1098       CCODECVT_H=config/locale/codecvt_specializations_ieee_1003.1-200x.h
1099       CMESSAGES_H=config/locale/messages_members_gnu.h
1100       CMESSAGES_CC=config/locale/messages_members_gnu.cc
1101       CCOLLATE_CC=config/locale/collate_specializations_gnu.cc
1102       ;;
1103     xieee_1003.1)
1104       AC_MSG_RESULT(generic)
1105
1106       # Don't use gettext.
1107       USE_NLS=no
1108
1109       CLOCALE_H=config/locale/c_locale_ieee_1003.1-200x.h
1110       CLOCALE_CC=config/locale/c_locale_ieee_1003.1-200x.cc
1111       CCODECVT_H=config/locale/codecvt_specializations_ieee_1003.1-200x.h
1112       CMESSAGES_H=config/locale/messages_members_ieee_1003.1-200x.h
1113       CMESSAGES_CC=config/locale/messages_members_ieee_1003.1-200x.cc
1114       CCOLLATE_CC=config/locale/collate_specializations_generic.cc
1115       ;;
1116     *)
1117       echo "$enable_clocale is an unknown locale package" 1>&2
1118       exit 1
1119       ;;
1120   esac
1121
1122   # This is where the testsuite looks for locale catalogs, using the
1123   # -DLOCALEDIR define during testsuite compilation.
1124   glibcpp_localedir=${glibcpp_builddir}/po/share/locale
1125   AC_SUBST(glibcpp_localedir)
1126
1127   AC_SUBST(USE_NLS)
1128   AC_SUBST(CLOCALE_H)
1129   AC_SUBST(CCODECVT_H)
1130   AC_SUBST(CMESSAGES_H)
1131   AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc)
1132   AC_LINK_FILES($CMESSAGES_CC, src/messages.cc)
1133   AC_LINK_FILES($CCOLLATE_CC, src/collate.cc)
1134 ])
1135
1136
1137 dnl
1138 dnl Check for which I/O library to use:  libio, or something specific.
1139 dnl
1140 dnl GLIBCPP_ENABLE_CSTDIO
1141 dnl --enable-cstdio=libio sets config/io/c_io_libio.h and friends
1142 dnl
1143 dnl default is stdio
1144 dnl
1145 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1146   AC_MSG_CHECKING([for cstdio to use])
1147   AC_ARG_ENABLE(cstdio,
1148   [  --enable-cstdio         enable stdio for target io package.
1149   --enable-cstdio=LIB     use LIB target-speific io package. [default=stdio]
1150   ],
1151   if test x$enable_cstdio = xno; then
1152      enable_cstdio=stdio
1153   fi,
1154      enable_cstdio=stdio)
1155
1156   enable_cstdio_flag=$enable_cstdio
1157
1158   dnl Check if a valid I/O package
1159   case x${enable_cstdio_flag} in
1160     xlibio)
1161       CSTDIO_H=config/io/c_io_libio.h
1162       BASIC_FILE_H=config/io/basic_file_libio.h
1163       BASIC_FILE_CC=config/io/basic_file_libio.cc
1164       AC_MSG_RESULT(libio)
1165
1166       # see if we are on a system with libio native (ie, linux)
1167       AC_CHECK_HEADER(libio.h,  has_libio=yes, has_libio=no)
1168
1169       # Need to check and see what version of glibc is being used. If
1170       # it's not glibc-2.2 or higher, then we'll need to go ahead and
1171       # compile most of libio for linux systems.
1172       if test x$has_libio = x"yes"; then
1173         case "$target" in
1174           *-*-linux*)
1175               AC_MSG_CHECKING([for glibc version >= 2.2])
1176               AC_EGREP_CPP([ok], [
1177             #include <features.h>
1178               #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1179                     ok
1180               #endif
1181               ], glibc_satisfactory=yes, glibc_satisfactory=no)
1182               AC_MSG_RESULT($glibc_satisfactory)
1183             ;;
1184         esac
1185
1186         # XXX at the moment, admit defeat and force the recompilation
1187         # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1188         glibc_satisfactory=no
1189
1190         if test x$glibc_satisfactory = x"yes"; then
1191            need_libio=no
1192            need_wlibio=no
1193         else
1194            need_libio=yes
1195            # bkoz XXX need to add checks to enable this
1196            # pme XXX here's a first pass at such a check
1197            if test x$enable_c_mbchar != xno; then
1198               need_wlibio=yes
1199            else
1200               need_wlibio=no
1201            fi
1202         fi
1203
1204       else
1205          # Using libio, but <libio.h> doesn't exist on the target system. . .
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$enable_c_mbchar != xno; then
1210              need_wlibio=yes
1211          else
1212              need_wlibio=no
1213          fi
1214       fi
1215       ;;
1216     xstdio | x | xno | xnone | xyes)
1217       # default
1218       CSTDIO_H=config/io/c_io_stdio.h
1219       BASIC_FILE_H=config/io/basic_file_stdio.h
1220       BASIC_FILE_CC=config/io/basic_file_stdio.cc
1221       AC_MSG_RESULT(stdio)
1222
1223       # We're not using stdio.
1224       need_libio=no
1225       need_wlibio=no
1226       ;;
1227     *)
1228       echo "$enable_cstdio is an unknown io package" 1>&2
1229       exit 1
1230       ;;
1231   esac
1232   AC_SUBST(CSTDIO_H)
1233   AC_SUBST(BASIC_FILE_H)
1234   AC_LINK_FILES($BASIC_FILE_CC, src/basic_file.cc)
1235
1236   # 2000-08-04 bkoz hack
1237   CCODECVT_C=config/io/c_io_libio_codecvt.c
1238   AC_SUBST(CCODECVT_C)
1239   # 2000-08-04 bkoz hack
1240
1241   AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1242                  test "$need_libio" = yes || test "$need_wlibio" = yes)
1243   AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1244   AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1245   if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1246     libio_la=../libio/libio.la
1247   else
1248     libio_la=
1249   fi
1250   AC_SUBST(libio_la)
1251 ])
1252
1253
1254 dnl
1255 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
1256 dnl We must stage the required headers so that they will be installed
1257 dnl with the library (unlike libgcc, the STL implementation is provided
1258 dnl solely within headers).  Since we must not inject random user-space
1259 dnl macro names into user-provided C++ code, we first stage into <file>-in
1260 dnl and process to <file> with an output command.  The reason for a two-
1261 dnl stage process here is to correctly handle $srcdir!=$objdir without
1262 dnl having to write complex code (the sed commands to clean the macro
1263 dnl namespace are complex and fragile enough as it is).  We must also
1264 dnl add a relative path so that -I- is supported properly.
1265 dnl
1266 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1267   AC_MSG_CHECKING([for thread model used by GCC])
1268   target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
1269   AC_MSG_RESULT([$target_thread_file])
1270
1271   if test $target_thread_file != single; then
1272     AC_DEFINE(HAVE_GTHR_DEFAULT)
1273     AC_DEFINE(_GLIBCPP_SUPPORTS_WEAK, __GXX_WEAK__)
1274   fi
1275
1276   glibcpp_thread_h=gthr-$target_thread_file.h
1277   AC_SUBST(glibcpp_thread_h)
1278 ])
1279
1280
1281 dnl
1282 dnl Check for exception handling support.  If an explicit enable/disable
1283 dnl sjlj exceptions is given, we don't have to detect.  Otherwise the
1284 dnl target may or may not support call frame exceptions.
1285 dnl
1286 dnl GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
1287 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1288 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1289 dnl
1290 dnl Define _GLIBCPP_SJLJ_EXCEPTIONS if the compiler is configured for it.
1291 dnl
1292 AC_DEFUN(GLIBCPP_ENABLE_SJLJ_EXCEPTIONS, [
1293   AC_MSG_CHECKING([for exception model to use])
1294   AC_LANG_SAVE
1295   AC_LANG_CPLUSPLUS
1296   AC_ARG_ENABLE(sjlj-exceptions,
1297   [  --enable-sjlj-exceptions  force use of builtin_setjmp for exceptions],
1298   [:],
1299   [dnl Botheration.  Now we've got to detect the exception model.
1300    dnl Link tests against libgcc.a are problematic since -- at least
1301    dnl as of this writing -- we've not been given proper -L bits for
1302    dnl single-tree newlib and libgloss.
1303    dnl
1304    dnl This is what AC_TRY_COMPILE would do if it didn't delete the
1305    dnl conftest files before we got a change to grep them first.
1306    cat > conftest.$ac_ext << EOF
1307 [#]line __oline__ "configure"
1308 struct S { ~S(); };
1309 void bar();
1310 void foo()
1311 {
1312   S s;
1313   bar();
1314 }
1315 EOF
1316    old_CXXFLAGS="$CXXFLAGS"
1317    CXXFLAGS=-S
1318    if AC_TRY_EVAL(ac_compile); then
1319      if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1320        enable_sjlj_exceptions=yes
1321      elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1322        enable_sjlj_exceptions=no
1323      fi
1324    fi
1325    CXXFLAGS="$old_CXXFLAGS"
1326    rm -f conftest*])
1327    if test x$enable_sjlj_exceptions = xyes; then
1328      AC_DEFINE(_GLIBCPP_SJLJ_EXCEPTIONS, 1,
1329         [Define if the compiler is configured for setjmp/longjmp exceptions.])
1330      ac_exception_model_name=sjlj
1331    elif test x$enable_sjlj_exceptions = xno; then
1332      ac_exception_model_name="call frame"
1333    else
1334      AC_MSG_ERROR([unable to detect exception model])
1335    fi
1336    AC_LANG_RESTORE
1337    AC_MSG_RESULT($ac_exception_model_name)
1338 ])
1339
1340
1341 dnl
1342 dnl Check for ISO/IEC 9899:1999 "C99" support.
1343 dnl
1344 dnl GLIBCPP_ENABLE_C99
1345 dnl --enable-c99 defines _GLIBCPP_USE_C99
1346 dnl --disable-c99 leaves _GLIBCPP_USE_C99 undefined
1347 dnl  +  Usage:  GLIBCPP_ENABLE_C99[(DEFAULT)]
1348 dnl       Where DEFAULT is either `yes' or `no'.  If omitted, it
1349 dnl       defaults to `no'.
1350 dnl  +  If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
1351 dnl
1352 dnl GLIBCPP_ENABLE_C99
1353 AC_DEFUN(GLIBCPP_ENABLE_C99, [dnl
1354   define([GLIBCPP_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
1355
1356   AC_ARG_ENABLE(c99,
1357   changequote(<<, >>)dnl
1358   <<--enable-c99      turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
1359   changequote([, ])dnl
1360   [case "$enableval" in
1361    yes) enable_c99=yes ;;
1362    no)  enable_c99=no ;;
1363    *)   AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
1364    esac],
1365   enable_c99=GLIBCPP_ENABLE_C99_DEFAULT)dnl
1366
1367   AC_LANG_SAVE
1368   AC_LANG_CPLUSPLUS
1369
1370   # Check for the existence of <math.h> functions used if C99 is enabled.
1371   ac_c99_math=yes;
1372   AC_MSG_CHECKING([for ISO C99 support in <math.h>])
1373   AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
1374   AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
1375   AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
1376   AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
1377   AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
1378   AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
1379   AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
1380   AC_TRY_COMPILE([#include <math.h>],
1381                  [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
1382   AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
1383   AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
1384   AC_TRY_COMPILE([#include <math.h>],
1385                  [islessgreater(0.0,0.0);],, [ac_c99_math=no])
1386   AC_TRY_COMPILE([#include <math.h>],
1387                  [isunordered(0.0,0.0);],, [ac_c99_math=no])
1388   AC_MSG_RESULT($ac_c99_math)
1389
1390   # Check for the existence in <stdio.h> of vscanf, et. al.
1391   ac_c99_stdio=yes;
1392   AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
1393   AC_TRY_COMPILE([#include <stdio.h>],
1394                  [snprintf("12", 0, "%i");],, [ac_c99_stdio=no])
1395   AC_TRY_COMPILE([#include <stdio.h>
1396                   #include <stdarg.h>
1397                   void foo(char* fmt, ...)
1398                   {va_list args; va_start(args, fmt);
1399                   vfscanf(stderr, "%i", args);}],
1400                   [],, [ac_c99_stdio=no])
1401   AC_TRY_COMPILE([#include <stdio.h>
1402                   #include <stdarg.h>
1403                   void foo(char* fmt, ...)
1404                   {va_list args; va_start(args, fmt);
1405                   vscanf("%i", args);}],
1406                   [],, [ac_c99_stdio=no])
1407   AC_TRY_COMPILE([#include <stdio.h>
1408                   #include <stdarg.h>
1409                   void foo(char* fmt, ...)
1410                   {va_list args; va_start(args, fmt);
1411                   vsnprintf(fmt, 0, "%i", args);}],
1412                   [],, [ac_c99_stdio=no])
1413   AC_TRY_COMPILE([#include <stdio.h>
1414                   #include <stdarg.h>
1415                   void foo(char* fmt, ...)
1416                   {va_list args; va_start(args, fmt);
1417                   vsscanf(fmt, "%i", args);}],
1418                   [],, [ac_c99_stdio=no])
1419   AC_MSG_RESULT($ac_c99_stdio)
1420
1421   # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1422   ac_c99_stdlib=yes;
1423   AC_MSG_CHECKING([for lldiv_t declaration])
1424   AC_CACHE_VAL(ac_c99_lldiv_t, [
1425   AC_TRY_COMPILE([#include <stdlib.h>],
1426                    [ lldiv_t mydivt;],
1427                    [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
1428   ])
1429   AC_MSG_RESULT($ac_c99_lldiv_t)
1430
1431   AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1432   AC_TRY_COMPILE([#include <stdlib.h>],
1433                  [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
1434   AC_TRY_COMPILE([#include <stdlib.h>],
1435                  [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
1436   AC_TRY_COMPILE([#include <stdlib.h>],
1437                  [char* tmp; strtoll("gnu", &tmp, 10);],, [ac_c99_stdlib=no])
1438   AC_TRY_COMPILE([#include <stdlib.h>],
1439                  [char* tmp; strtoull("gnu", &tmp, 10);],, [ac_c99_stdlib=no])
1440   AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
1441   AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
1442   AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
1443   AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no])
1444   if test x"$ac_c99_lldiv_t" = x"no"; then
1445     ac_c99_stdlib=no;
1446   fi;
1447   AC_MSG_RESULT($ac_c99_stdlib)
1448
1449   # Check for the existence of <wchar.h> functions used if C99 is enabled.
1450   # XXX the wchar.h checks should be rolled into the general C99 bits.
1451   ac_c99_wchar=yes;
1452   AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>])
1453   AC_TRY_COMPILE([#include <wchar.h>],
1454                  [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
1455   AC_TRY_COMPILE([#include <wchar.h>],
1456                  [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
1457   AC_TRY_COMPILE([#include <wchar.h>],
1458                  [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
1459   AC_MSG_RESULT($ac_c99_wchar)
1460
1461   AC_MSG_CHECKING([for enabled ISO C99 support])
1462   if test x"$ac_c99_math" = x"no" ||
1463      test x"$ac_c99_stdio" = x"no" ||
1464      test x"$ac_c99_stdlib" = x"no" ||
1465      test x"$ac_c99_wchar" = x"no"; then
1466     enable_c99=no;
1467   fi;
1468   AC_MSG_RESULT($enable_c99)
1469
1470   # Option parsed, now set things appropriately
1471   if test x"$enable_c99" = x"yes"; then
1472     AC_DEFINE(_GLIBCPP_USE_C99)
1473   fi
1474
1475   AC_LANG_RESTORE
1476 ])
1477
1478
1479 dnl
1480 dnl Check for template specializations for the 'long long' type extension.
1481 dnl NB: Must check for C99 support before calling _GLIBCPP_ENABLE_LONG_LONG
1482 dnl
1483 dnl GLIBCPP_ENABLE_LONG_LONG
1484 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1485 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1486 dnl  +  Usage:  GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1487 dnl       Where DEFAULT is either `yes' or `no'.  If omitted, it
1488 dnl       defaults to `no'.
1489 dnl  +  If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1490 dnl
1491 dnl GLIBCPP_ENABLE_LONG_LONG
1492 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1493   define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1494
1495   AC_ARG_ENABLE(long-long,
1496   changequote(<<, >>)dnl
1497   <<--enable-long-long      turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1498   changequote([, ])dnl
1499   [case "$enableval" in
1500    yes) enable_long_long=yes ;;
1501    no)  enable_long_long=no ;;
1502    *)   AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1503    esac],
1504   enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1505
1506   # iostreams require strtoll, strtoull to compile. If the
1507   # GLIBCPP_ENABLE_C99 tests found these, and if C99 support is enabled,
1508   # go ahead and allow long long to be used.
1509   if test x"$enable_c99" = x"no"; then
1510     enable_long_long=no;
1511   fi
1512
1513   # Option parsed, now set things appropriately
1514   AC_MSG_CHECKING([for enabled long long support])
1515   if test x"$enable_long_long" = xyes; then
1516     AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1517   fi
1518   AC_MSG_RESULT($enable_long_long)
1519 ])
1520
1521
1522 dnl
1523 dnl Check for what kind of C headers to use.
1524 dnl
1525 dnl GLIBCPP_ENABLE_CHEADERS
1526 dnl --enable-cheaders= [does stuff].
1527 dnl --disable-cheaders [does not do anything, really].
1528 dnl  +  This will eventually need to be 'c_shadow' by default.
1529 dnl  +  Usage:  GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1530 dnl       Where DEFAULT is either `c' or `c_std' or 'c_shadow'.
1531 dnl       If ommitted, it defaults to `c_std'.
1532 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1533 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1534 AC_MSG_CHECKING([for c header strategy to use])
1535 AC_ARG_ENABLE(cheaders,
1536 changequote(<<, >>)dnl
1537 <<  --enable-cheaders       construct "C" header files for g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1538 changequote([, ])
1539   [case "$enableval" in
1540    c)
1541         enable_cheaders=c
1542         ;;
1543    c_std)
1544         enable_cheaders=c_std
1545         ;;
1546    c_shadow)
1547         enable_cheaders=c_shadow
1548         ;;
1549    *)   AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1550         ;;
1551   esac],
1552   enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1553   AC_MSG_RESULT($enable_cheaders)
1554
1555   dnl Option parsed, now set things appropriately
1556   case "$enable_cheaders" in
1557     c_shadow)
1558         CSHADOW_FLAGS="-fno-builtin"
1559         C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_shadow'
1560         AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1561         ;;
1562     c_std)
1563         CSHADOW_FLAGS=""
1564         C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_std'
1565         ;;
1566     c)
1567         CSHADOW_FLAGS=""
1568         C_INCLUDE_DIR='${glibcpp_srcdir}/include/c'
1569         ;;
1570   esac
1571
1572   AC_SUBST(CSHADOW_FLAGS)
1573   AC_SUBST(C_INCLUDE_DIR)
1574   AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cheaders" = c_shadow)
1575 ])
1576
1577
1578 dnl
1579 dnl Check for wide character support.  Has the same effect as the option
1580 dnl in gcc's configure, but in a form that autoconf can mess with.
1581 dnl
1582 dnl GLIBCPP_ENABLE_C_MBCHAR
1583 dnl --enable-c-mbchar requests all the wchar_t stuff.
1584 dnl --disable-c-mbchar doesn't.
1585 dnl  +  Usage:  GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1586 dnl       Where DEFAULT is either `yes' or `no'.  If ommitted, it
1587 dnl       defaults to `no'.
1588 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1589 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1590 AC_ARG_ENABLE(c-mbchar,
1591 changequote(<<, >>)dnl
1592 <<  --enable-c-mbchar       enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1593 changequote([, ])dnl
1594 [case "$enableval" in
1595  yes) enable_c_mbchar=yes ;;
1596  no)  enable_c_mbchar=no ;;
1597  *)   AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1598  esac],
1599 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1600 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1601 ])
1602
1603
1604 dnl
1605 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1606 dnl
1607 dnl TOPLEVEL_INCLUDES
1608 dnl LIBMATH_INCLUDES
1609 dnl LIBSUPCXX_INCLUDES
1610 dnl LIBIO_INCLUDES
1611 dnl CSHADOW_INCLUDES
1612 dnl
1613 dnl GLIBCPP_EXPORT_INCLUDES
1614 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1615   # Root level of the build directory include sources.
1616   GLIBCPP_INCLUDES="-I${glibcpp_builddir}/include/${target_alias} -I${glibcpp_builddir}/include \
1617                     -I${glibcpp_builddir}/include/backward"
1618
1619   # Passed down for canadian crosses.
1620   if test x"$CANADIAN" = xyes; then
1621     TOPLEVEL_INCLUDES='-I$(includedir)'
1622   fi
1623
1624   LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1625
1626   LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1627
1628   if test x"$need_libio" = xyes; then
1629     LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1630     AC_SUBST(LIBIO_INCLUDES)
1631   fi
1632
1633   # Now, export this to all the little Makefiles....
1634   AC_SUBST(GLIBCPP_INCLUDES)
1635   AC_SUBST(TOPLEVEL_INCLUDES)
1636   AC_SUBST(LIBMATH_INCLUDES)
1637   AC_SUBST(LIBSUPCXX_INCLUDES)
1638 ])
1639
1640
1641 dnl
1642 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1643 dnl
1644 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1645   # Optimization flags that are probably a good idea for thrill-seekers. Just
1646   # uncomment the lines below and make, everything else is ready to go...
1647   # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1648   OPTIMIZE_CXXFLAGS=
1649   AC_SUBST(OPTIMIZE_CXXFLAGS)
1650
1651   WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1652   AC_SUBST(WARN_FLAGS)
1653 ])
1654
1655 dnl
1656 dnl  GLIBCPP_EXPORT_INSTALL_INFO
1657 dnl  calculates gxx_install_dir
1658 dnl  exports glibcpp_toolexecdir
1659 dnl  exports glibcpp_toolexeclibdir
1660 dnl  exports glibcpp_prefixdir
1661 dnl
1662 dnl Assumes cross_compiling bits already done, and with_cross_host in
1663 dnl particular
1664 dnl
1665 dnl GLIBCPP_EXPORT_INSTALL_INFO
1666 AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
1667 # Assumes glibcpp_builddir, glibcpp_srcdir are alreay set up and
1668 # exported correctly in GLIBCPP_CONFIGURE.
1669 glibcpp_toolexecdir=no
1670 glibcpp_toolexeclibdir=no
1671 glibcpp_prefixdir=${prefix}
1672
1673 AC_MSG_CHECKING([for interface version number])
1674 libstdcxx_interface=$INTERFACE
1675 AC_MSG_RESULT($libstdcxx_interface)
1676
1677 # Process the option --with-gxx-include-dir=<path to include-files directory>
1678 AC_MSG_CHECKING([for --with-gxx-include-dir])
1679 AC_ARG_WITH(gxx-include-dir,
1680 [  --with-gxx-include-dir  the installation directory for include files],
1681 [case "${withval}" in
1682   yes)
1683     AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1684     gxx_include_dir=no
1685     ;;
1686   no)
1687     gxx_include_dir=no
1688     ;;
1689   *)
1690     gxx_include_dir=${withval}
1691     ;;
1692 esac], [gxx_include_dir=no])
1693 AC_MSG_RESULT($gxx_include_dir)
1694
1695 # Process the option "--enable-version-specific-runtime-libs"
1696 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1697 AC_ARG_ENABLE(version-specific-runtime-libs,
1698 [  --enable-version-specific-runtime-libs    Specify that runtime libraries should be installed in a compiler-specific directory ],
1699 [  version_specific_libs=yes
1700 # Need the gcc compiler version to know where to install libraries
1701 # and header files if --enable-version-specific-runtime-libs option
1702 # is selected.
1703 changequote(,)dnl
1704 gcc_version_trigger=${srcdir}/../gcc/version.c
1705 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
1706 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1707 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/g++
1708 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1709 glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
1710 changequote([,])dnl
1711 ],version_specific_libs=no)
1712 AC_MSG_RESULT($version_specific_libs)
1713
1714 # Default case for install directory for include files.
1715 if test x"$version_specific_libs" = x"no" \
1716    && test x"$gxx_include_dir" = x"no"; then
1717   gxx_include_dir='$(prefix)'/include/g++-${libstdcxx_interface}
1718 fi
1719
1720 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
1721 # Install a library built with a cross compiler in tooldir, not libdir.
1722 if test x"$glibcpp_toolexecdir" = x"no"; then
1723   if test -n "$with_cross_host" &&
1724      test x"$with_cross_host" != x"no"; then
1725     glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
1726     glibcpp_toolexeclibdir='$(toolexecdir)/lib$(MULTISUBDIR)'
1727   else
1728     glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1729     glibcpp_toolexeclibdir='$(libdir)$(MULTISUBDIR)'
1730   fi
1731 fi
1732
1733 AC_MSG_CHECKING([for install location])
1734 AC_MSG_RESULT($gxx_include_dir)
1735
1736 AC_SUBST(glibcpp_prefixdir)
1737 AC_SUBST(gxx_include_dir)
1738 AC_SUBST(glibcpp_toolexecdir)
1739 AC_SUBST(glibcpp_toolexeclibdir)
1740 ])
1741
1742
1743 # Check for functions in math library.
1744 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1745 #
1746 # This file can be copied and used freely without restrictions.  It can
1747 # be used in projects which are not available under the GNU Public License
1748 # but which still want to provide support for the GNU gettext functionality.
1749 # Please note that the actual code is *not* freely available.
1750
1751 # serial 1
1752
1753 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1754 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1755 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1756 AC_SUBST(LIBMATHOBJS)dnl
1757 ])
1758
1759
1760
1761 dnl This macro searches for a GNU version of make.  If a match is found, the
1762 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1763 dnl set to "#". This is useful for  including a special features in a Makefile,
1764 dnl which cannot be handled by other versions of make.  The variable
1765 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1766 dnl the empty string otherwise.
1767 dnl
1768 dnl Here is an example of its use:
1769 dnl
1770 dnl Makefile.in might contain:
1771 dnl
1772 dnl     # A failsafe way of putting a dependency rule into a makefile
1773 dnl     $(DEPEND):
1774 dnl             $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1775 dnl
1776 dnl     @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1777 dnl     @ifGNUmake@ include $(DEPEND)
1778 dnl     @ifGNUmake@ endif
1779 dnl
1780 dnl Then configure.in would normally contain:
1781 dnl
1782 dnl     CHECK_GNU_MAKE()
1783 dnl     AC_OUTPUT(Makefile)
1784 dnl
1785 dnl Then perhaps to cause gnu make to override any other make, we could do
1786 dnl something like this (note that GNU make always looks for GNUmakefile first):
1787 dnl
1788 dnl     if  ! test x$_cv_gnu_make_command = x ; then
1789 dnl             mv Makefile GNUmakefile
1790 dnl             echo .DEFAULT: > Makefile ;
1791 dnl             echo \  $_cv_gnu_make_command \$@ >> Makefile;
1792 dnl     fi
1793 dnl
1794 dnl Then, if any (well almost any) other make is called, and GNU make also
1795 dnl exists, then the other make wraps the GNU make.
1796 dnl
1797 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1798 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1799 dnl
1800 dnl #### Changes for libstdc++-v3:  reformatting and linewrapping; prepending
1801 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1802 dnl #### conditional's subshell (" --version" is not a command), using a
1803 dnl #### different option to grep(1).
1804 dnl #### -pme
1805 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
1806 dnl #### ${MAKE:-make}).
1807 dnl #### -msokolov
1808 AC_DEFUN(
1809   GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1810           _cv_gnu_make_command='' ;
1811 dnl Search all the common names for GNU make
1812           for a in "${MAKE-make}" make gmake gnumake ; do
1813                   if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1814                   then
1815                           _cv_gnu_make_command=$a ;
1816                           break;
1817                   fi
1818           done ;
1819   ) ;
1820 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1821 dnl string, '#' otherwise
1822   if test  "x$_cv_gnu_make_command" != "x"  ; then
1823           ifGNUmake='' ;
1824   else
1825           ifGNUmake='#' ;
1826   fi
1827   AC_SUBST(ifGNUmake)
1828 ])
1829
1830
1831 dnl Check for headers for, and arguments to, the setrlimit() function.
1832 dnl Used only in testsuite_hooks.h.
1833 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT_ancilliary, [
1834   AC_TRY_COMPILE([#include <sys/resource.h>
1835                   #include <unistd.h>
1836                  ], [ int f = RLIMIT_$1 ; ],
1837                  [glibcpp_mresult=1], [glibcpp_mresult=0])
1838   AC_DEFINE_UNQUOTED(HAVE_MEMLIMIT_$1, $glibcpp_mresult,
1839                      [Only used in build directory testsuite_hooks.h.])
1840 ])
1841 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT, [
1842   setrlimit_have_headers=yes
1843   AC_CHECK_HEADERS(sys/resource.h unistd.h,
1844                    [],
1845                    setrlimit_have_headers=no)
1846   # If don't have the headers, then we can't run the tests now, and we
1847   # won't be seeing any of these during testsuite compilation.
1848   if test $setrlimit_have_headers = yes; then
1849     # Can't do these in a loop, else the resulting syntax is wrong.
1850     GLIBCPP_CHECK_SETRLIMIT_ancilliary(DATA)
1851     GLIBCPP_CHECK_SETRLIMIT_ancilliary(RSS)
1852     GLIBCPP_CHECK_SETRLIMIT_ancilliary(VMEM)
1853     GLIBCPP_CHECK_SETRLIMIT_ancilliary(AS)
1854
1855     # Check for rlimit, setrlimit.
1856     AC_CACHE_VAL(ac_setrlimit, [
1857       AC_TRY_COMPILE([#include <sys/resource.h>
1858                       #include <unistd.h>
1859                      ],
1860                      [ struct rlimit r; setrlimit(0, &r);],
1861                      [ac_setrlimit=yes], [ac_setrlimit=no])
1862     ])
1863   fi
1864
1865   AC_MSG_CHECKING([for testsuite memory limit support])
1866   if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then
1867     ac_mem_limits=yes
1868     AC_DEFINE(_GLIBCPP_MEM_LIMITS)
1869   else
1870     ac_mem_limits=no
1871   fi
1872   AC_MSG_RESULT($ac_mem_limits)
1873 ])
1874
1875
1876 dnl
1877 dnl Does any necessary configuration of the testsuite directory.  Generates
1878 dnl the testsuite_hooks.h header.
1879 dnl
1880 dnl GLIBCPP_CONFIGURE_TESTSUITE  [no args]
1881 AC_DEFUN(GLIBCPP_CONFIGURE_TESTSUITE, [
1882   GLIBCPP_CHECK_SETRLIMIT
1883 ])
1884
1885
1886 sinclude(../libtool.m4)
1887 dnl The lines below arrange for aclocal not to bring an installed
1888 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1889 dnl add a definition of LIBTOOL to Makefile.in.
1890 ifelse(,,,[AC_SUBST(LIBTOOL)
1891 AC_DEFUN([AM_PROG_LIBTOOL])
1892 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1893 AC_DEFUN([AC_PROG_LD])
1894 ])
1895
1896
1897 # Check whether LC_MESSAGES is available in <locale.h>.
1898 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1899 #
1900 # This file file be copied and used freely without restrictions.  It can
1901 # be used in projects which are not available under the GNU Public License
1902 # but which still want to provide support for the GNU gettext functionality.
1903 # Please note that the actual code is *not* freely available.
1904
1905 # serial 1
1906
1907 AC_DEFUN(AC_LC_MESSAGES, [
1908   AC_CHECK_HEADER(locale.h, [
1909     AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1910       [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1911        ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1912     if test $ac_cv_val_LC_MESSAGES = yes; then
1913       AC_DEFINE(HAVE_LC_MESSAGES)
1914     fi
1915   ])
1916 ])
1917
1918
1919 # Add --enable-maintainer-mode option to configure.
1920 # From Jim Meyering
1921
1922 # serial 1
1923
1924 AC_DEFUN(AM_MAINTAINER_MODE,
1925 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1926   dnl maintainer-mode is disabled by default
1927   AC_ARG_ENABLE(maintainer-mode,
1928 [  --enable-maintainer-mode enable make rules and dependencies not useful
1929                           (and sometimes confusing) to the casual installer],
1930       USE_MAINTAINER_MODE=$enableval,
1931       USE_MAINTAINER_MODE=no)
1932   AC_MSG_RESULT($USE_MAINTAINER_MODE)
1933   AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
1934   MAINT=$MAINTAINER_MODE_TRUE
1935   AC_SUBST(MAINT)dnl
1936 ]
1937 )
1938
1939 # Define a conditional.
1940
1941 AC_DEFUN(AM_CONDITIONAL,
1942 [AC_SUBST($1_TRUE)
1943 AC_SUBST($1_FALSE)
1944 if $2; then
1945   $1_TRUE=
1946   $1_FALSE='#'
1947 else
1948   $1_TRUE='#'
1949   $1_FALSE=
1950 fi])
1951
1952 # Macro to add for using GNU gettext.
1953 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1954 #
1955 # This file can be copied and used freely without restrictions.  It can
1956 # be used in projects which are not available under the GNU Public License
1957 # but which still want to provide support for the GNU gettext functionality.
1958 # Please note that the actual code is *not* freely available.
1959
1960 # serial 5
1961
1962 AC_DEFUN(AM_WITH_NLS,
1963   [AC_MSG_CHECKING([whether NLS is requested])
1964     dnl Default is enabled NLS
1965     AC_ARG_ENABLE(nls,
1966       [  --disable-nls           do not use Native Language Support],
1967       USE_NLS=$enableval, USE_NLS=yes)
1968     AC_MSG_RESULT($USE_NLS)
1969     AC_SUBST(USE_NLS)
1970
1971     USE_INCLUDED_LIBINTL=no
1972
1973     dnl If we use NLS figure out what method
1974     if test "$USE_NLS" = "yes"; then
1975       AC_DEFINE(ENABLE_NLS)
1976       AC_MSG_CHECKING([whether included gettext is requested])
1977       AC_ARG_WITH(included-gettext,
1978         [  --with-included-gettext use the GNU gettext library included here],
1979         nls_cv_force_use_gnu_gettext=$withval,
1980         nls_cv_force_use_gnu_gettext=no)
1981       AC_MSG_RESULT($nls_cv_force_use_gnu_gettext)
1982
1983       nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
1984       if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
1985         dnl User does not insist on using GNU NLS library.  Figure out what
1986         dnl to use.  If gettext or catgets are available (in this order) we
1987         dnl use this.  Else we have to fall back to GNU NLS library.
1988         dnl catgets is only used if permitted by option --with-catgets.
1989         nls_cv_header_intl=
1990         nls_cv_header_libgt=
1991         CATOBJEXT=NONE
1992
1993         AC_CHECK_HEADER(libintl.h,
1994           [AC_CACHE_CHECK([for gettext in libc], gt_cv_func_gettext_libc,
1995             [AC_TRY_LINK([#include <libintl.h>], [return (int) gettext ("")],
1996                gt_cv_func_gettext_libc=yes, gt_cv_func_gettext_libc=no)])
1997
1998            if test "$gt_cv_func_gettext_libc" != "yes"; then
1999              AC_CHECK_LIB(intl, bindtextdomain,
2000                [AC_CACHE_CHECK([for gettext in libintl],
2001                  gt_cv_func_gettext_libintl,
2002                  [AC_CHECK_LIB(intl, gettext,
2003                   gt_cv_func_gettext_libintl=yes,
2004                   gt_cv_func_gettext_libintl=no)],
2005                  gt_cv_func_gettext_libintl=no)])
2006            fi
2007
2008            if test "$gt_cv_func_gettext_libc" = "yes" \
2009               || test "$gt_cv_func_gettext_libintl" = "yes"; then
2010               AC_DEFINE(HAVE_GETTEXT)
2011               AM_PATH_PROG_WITH_TEST(MSGFMT, msgfmt,
2012                 [test -z "`$ac_dir/$ac_word -h 2>&1 | grep 'dv '`"], no)dnl
2013               if test "$MSGFMT" != "no"; then
2014                 AC_CHECK_FUNCS(dcgettext)
2015                 AC_PATH_PROG(GMSGFMT, gmsgfmt, $MSGFMT)
2016                 AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext,
2017                   [test -z "`$ac_dir/$ac_word -h 2>&1 | grep '(HELP)'`"], :)
2018                 AC_TRY_LINK(, [extern int _nl_msg_cat_cntr;
2019                                return _nl_msg_cat_cntr],
2020                   [CATOBJEXT=.gmo
2021                    DATADIRNAME=share],
2022                   [CATOBJEXT=.mo
2023                    DATADIRNAME=lib])
2024                 INSTOBJEXT=.mo
2025               fi
2026             fi
2027         ])
2028
2029         if test "$CATOBJEXT" = "NONE"; then
2030           AC_MSG_CHECKING([whether catgets can be used])
2031           AC_ARG_WITH(catgets,
2032             [  --with-catgets          use catgets functions if available],
2033             nls_cv_use_catgets=$withval, nls_cv_use_catgets=no)
2034           AC_MSG_RESULT($nls_cv_use_catgets)
2035
2036           if test "$nls_cv_use_catgets" = "yes"; then
2037             dnl No gettext in C library.  Try catgets next.
2038             AC_CHECK_LIB(i, main)
2039             AC_CHECK_FUNC(catgets,
2040               [AC_DEFINE(HAVE_CATGETS)
2041                INTLOBJS="\$(CATOBJS)"
2042                AC_PATH_PROG(GENCAT, gencat, no)dnl
2043                if test "$GENCAT" != "no"; then
2044                  AC_PATH_PROG(GMSGFMT, gmsgfmt, no)
2045                  if test "$GMSGFMT" = "no"; then
2046                    AM_PATH_PROG_WITH_TEST(GMSGFMT, msgfmt,
2047                     [test -z "`$ac_dir/$ac_word -h 2>&1 | grep 'dv '`"], no)
2048                  fi
2049                  AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext,
2050                    [test -z "`$ac_dir/$ac_word -h 2>&1 | grep '(HELP)'`"], :)
2051                  USE_INCLUDED_LIBINTL=yes
2052                  CATOBJEXT=.cat
2053                  INSTOBJEXT=.cat
2054                  DATADIRNAME=lib
2055                  INTLDEPS='$(top_builddir)/intl/libintl.a'
2056                  INTLLIBS=$INTLDEPS
2057                  LIBS=`echo $LIBS | sed -e 's/-lintl//'`
2058                  nls_cv_header_intl=intl/libintl.h
2059                  nls_cv_header_libgt=intl/libgettext.h
2060                fi])
2061           fi
2062         fi
2063
2064         if test "$CATOBJEXT" = "NONE"; then
2065           dnl Neither gettext nor catgets in included in the C library.
2066           dnl Fall back on GNU gettext library.
2067           nls_cv_use_gnu_gettext=yes
2068         fi
2069       fi
2070
2071       if test "$nls_cv_use_gnu_gettext" = "yes"; then
2072         dnl Mark actions used to generate GNU NLS library.
2073         INTLOBJS="\$(GETTOBJS)"
2074         AM_PATH_PROG_WITH_TEST(MSGFMT, msgfmt,
2075           [test -z "`$ac_dir/$ac_word -h 2>&1 | grep 'dv '`"], msgfmt)
2076         AC_PATH_PROG(GMSGFMT, gmsgfmt, $MSGFMT)
2077         AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext,
2078           [test -z "`$ac_dir/$ac_word -h 2>&1 | grep '(HELP)'`"], :)
2079         AC_SUBST(MSGFMT)
2080         USE_INCLUDED_LIBINTL=yes
2081         CATOBJEXT=.gmo
2082         INSTOBJEXT=.mo
2083         DATADIRNAME=share
2084         INTLDEPS='$(top_builddir)/intl/libintl.a'
2085         INTLLIBS=$INTLDEPS
2086         LIBS=`echo $LIBS | sed -e 's/-lintl//'`
2087         nls_cv_header_intl=intl/libintl.h
2088         nls_cv_header_libgt=intl/libgettext.h
2089       fi
2090
2091       dnl Test whether we really found GNU xgettext.
2092       if test "$XGETTEXT" != ":"; then
2093         dnl If it is no GNU xgettext we define it as : so that the
2094         dnl Makefiles still can work.
2095         if $XGETTEXT --omit-header /dev/null 2> /dev/null; then
2096           : ;
2097         else
2098           AC_MSG_RESULT(
2099             [found xgettext program is not GNU xgettext; ignore it])
2100           XGETTEXT=":"
2101         fi
2102       fi
2103
2104       # We need to process the po/ directory.
2105       POSUB=po
2106     else
2107       DATADIRNAME=share
2108       nls_cv_header_intl=intl/libintl.h
2109       nls_cv_header_libgt=intl/libgettext.h
2110     fi
2111     AC_LINK_FILES($nls_cv_header_libgt, $nls_cv_header_intl)
2112     AC_OUTPUT_COMMANDS(
2113      [case "$CONFIG_FILES" in *po/Makefile.in*)
2114         sed -e "/POTFILES =/r po/POTFILES" po/Makefile.in > po/Makefile
2115       esac])
2116
2117
2118     # If this is used in GNU gettext we have to set USE_NLS to `yes'
2119     # because some of the sources are only built for this goal.
2120     if test "$PACKAGE" = gettext; then
2121       USE_NLS=yes
2122       USE_INCLUDED_LIBINTL=yes
2123     fi
2124
2125     dnl These rules are solely for the distribution goal.  While doing this
2126     dnl we only have to keep exactly one list of the available catalogs
2127     dnl in configure.in.
2128     for lang in $ALL_LINGUAS; do
2129       GMOFILES="$GMOFILES $lang.gmo"
2130       POFILES="$POFILES $lang.po"
2131     done
2132
2133     dnl Make all variables we use known to autoconf.
2134     AC_SUBST(USE_INCLUDED_LIBINTL)
2135     AC_SUBST(CATALOGS)
2136     AC_SUBST(CATOBJEXT)
2137     AC_SUBST(DATADIRNAME)
2138     AC_SUBST(GMOFILES)
2139     AC_SUBST(INSTOBJEXT)
2140     AC_SUBST(INTLDEPS)
2141     AC_SUBST(INTLLIBS)
2142     AC_SUBST(INTLOBJS)
2143     AC_SUBST(POFILES)
2144     AC_SUBST(POSUB)
2145   ])
2146
2147 AC_DEFUN(AM_GNU_GETTEXT,
2148   [AC_REQUIRE([AC_PROG_MAKE_SET])dnl
2149    AC_REQUIRE([AC_PROG_CC])dnl
2150    AC_REQUIRE([AC_PROG_RANLIB])dnl
2151    AC_REQUIRE([AC_ISC_POSIX])dnl
2152    AC_REQUIRE([AC_HEADER_STDC])dnl
2153    AC_REQUIRE([AC_C_CONST])dnl
2154    AC_REQUIRE([AC_C_INLINE])dnl
2155    AC_REQUIRE([AC_TYPE_OFF_T])dnl
2156    AC_REQUIRE([AC_TYPE_SIZE_T])dnl
2157    AC_REQUIRE([AC_FUNC_ALLOCA])dnl
2158    AC_REQUIRE([AC_FUNC_MMAP])dnl
2159
2160    AC_CHECK_HEADERS([argz.h limits.h locale.h nl_types.h malloc.h string.h \
2161 unistd.h sys/param.h])
2162    AC_CHECK_FUNCS([getcwd munmap putenv setenv setlocale strchr strcasecmp \
2163 strdup __argz_count __argz_stringify __argz_next])
2164
2165    if test "${ac_cv_func_stpcpy+set}" != "set"; then
2166      AC_CHECK_FUNCS(stpcpy)
2167    fi
2168    if test "${ac_cv_func_stpcpy}" = "yes"; then
2169      AC_DEFINE(HAVE_STPCPY)
2170    fi
2171
2172    AM_LC_MESSAGES
2173    AM_WITH_NLS
2174
2175    if test "x$CATOBJEXT" != "x"; then
2176      if test "x$ALL_LINGUAS" = "x"; then
2177        LINGUAS=
2178      else
2179        AC_MSG_CHECKING(for catalogs to be installed)
2180        NEW_LINGUAS=
2181        for lang in ${LINGUAS=$ALL_LINGUAS}; do
2182          case "$ALL_LINGUAS" in
2183           *$lang*) NEW_LINGUAS="$NEW_LINGUAS $lang" ;;
2184          esac
2185        done
2186        LINGUAS=$NEW_LINGUAS
2187        AC_MSG_RESULT($LINGUAS)
2188      fi
2189
2190      dnl Construct list of names of catalog files to be constructed.
2191      if test -n "$LINGUAS"; then
2192        for lang in $LINGUAS; do CATALOGS="$CATALOGS $lang$CATOBJEXT"; done
2193      fi
2194    fi
2195
2196    dnl The reference to <locale.h> in the installed <libintl.h> file
2197    dnl must be resolved because we cannot expect the users of this
2198    dnl to define HAVE_LOCALE_H.
2199    if test $ac_cv_header_locale_h = yes; then
2200      INCLUDE_LOCALE_H="#include <locale.h>"
2201    else
2202      INCLUDE_LOCALE_H="\
2203 /* The system does not provide the header <locale.h>.  Take care yourself.  */"
2204    fi
2205    AC_SUBST(INCLUDE_LOCALE_H)
2206
2207    dnl Determine which catalog format we have (if any is needed)
2208    dnl For now we know about two different formats:
2209    dnl   Linux libc-5 and the normal X/Open format
2210    test -d intl || mkdir intl
2211    if test "$CATOBJEXT" = ".cat"; then
2212      AC_CHECK_HEADER(linux/version.h, msgformat=linux, msgformat=xopen)
2213
2214      dnl Transform the SED scripts while copying because some dumb SEDs
2215      dnl cannot handle comments.
2216      sed -e '/^#/d' $srcdir/intl/$msgformat-msg.sed > intl/po2msg.sed
2217    fi
2218    dnl po2tbl.sed is always needed.
2219    sed -e '/^#.*[^\\]$/d' -e '/^#$/d' \
2220      $srcdir/intl/po2tbl.sed.in > intl/po2tbl.sed
2221
2222    dnl In the intl/Makefile.in we have a special dependency which makes
2223    dnl only sense for gettext.  We comment this out for non-gettext
2224    dnl packages.
2225    if test "$PACKAGE" = "gettext"; then
2226      GT_NO="#NO#"
2227      GT_YES=
2228    else
2229      GT_NO=
2230      GT_YES="#YES#"
2231    fi
2232    AC_SUBST(GT_NO)
2233    AC_SUBST(GT_YES)
2234
2235    dnl If the AC_CONFIG_AUX_DIR macro for autoconf is used we possibly
2236    dnl find the mkinstalldirs script in another subdir but ($top_srcdir).
2237    dnl Try to locate is.
2238    MKINSTALLDIRS=
2239    if test -n "$ac_aux_dir"; then
2240      MKINSTALLDIRS="$ac_aux_dir/mkinstalldirs"
2241    fi
2242    if test -z "$MKINSTALLDIRS"; then
2243      MKINSTALLDIRS="\$(top_srcdir)/mkinstalldirs"
2244    fi
2245    AC_SUBST(MKINSTALLDIRS)
2246
2247    dnl *** For now the libtool support in intl/Makefile is not for real.
2248    l=
2249    AC_SUBST(l)
2250
2251    dnl Generate list of files to be processed by xgettext which will
2252    dnl be included in po/Makefile.
2253    test -d po || mkdir po
2254    if test "x$srcdir" != "x."; then
2255      if test "x`echo $srcdir | sed 's@/.*@@'`" = "x"; then
2256        posrcprefix="$srcdir/"
2257      else
2258        posrcprefix="../$srcdir/"
2259      fi
2260    else
2261      posrcprefix="../"
2262    fi
2263    rm -f po/POTFILES
2264    sed -e "/^#/d" -e "/^\$/d" -e "s,.*, $posrcprefix& \\\\," -e "\$s/\(.*\) \\\\/\1/" \
2265         < $srcdir/po/POTFILES.in > po/POTFILES
2266   ])
2267
2268 # Search path for a program which passes the given test.
2269 # Ulrich Drepper <drepper@cygnus.com>, 1996.
2270 #
2271 # This file can be copied and used freely without restrictions.  It can
2272 # be used in projects which are not available under the GNU Public License
2273 # but which still want to provide support for the GNU gettext functionality.
2274 # Please note that the actual code is *not* freely available.
2275
2276 # serial 1
2277
2278 dnl AM_PATH_PROG_WITH_TEST(VARIABLE, PROG-TO-CHECK-FOR,
2279 dnl   TEST-PERFORMED-ON-FOUND_PROGRAM [, VALUE-IF-NOT-FOUND [, PATH]])
2280 AC_DEFUN(AM_PATH_PROG_WITH_TEST,
2281 [# Extract the first word of "$2", so it can be a program name with args.
2282 set dummy $2; ac_word=[$]2
2283 AC_MSG_CHECKING([for $ac_word])
2284 AC_CACHE_VAL(ac_cv_path_$1,
2285 [case "[$]$1" in
2286   /*)
2287   ac_cv_path_$1="[$]$1" # Let the user override the test with a path.
2288   ;;
2289   *)
2290   IFS="${IFS=   }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
2291   for ac_dir in ifelse([$5], , $PATH, [$5]); do
2292     test -z "$ac_dir" && ac_dir=.
2293     if test -f $ac_dir/$ac_word; then
2294       if [$3]; then
2295         ac_cv_path_$1="$ac_dir/$ac_word"
2296         break
2297       fi
2298     fi
2299   done
2300   IFS="$ac_save_ifs"
2301 dnl If no 4th arg is given, leave the cache variable unset,
2302 dnl so AC_PATH_PROGS will keep looking.
2303 ifelse([$4], , , [  test -z "[$]ac_cv_path_$1" && ac_cv_path_$1="$4"
2304 ])dnl
2305   ;;
2306 esac])dnl
2307 $1="$ac_cv_path_$1"
2308 if test -n "[$]$1"; then
2309   AC_MSG_RESULT([$]$1)
2310 else
2311   AC_MSG_RESULT(no)
2312 fi
2313 AC_SUBST($1)dnl
2314 ])
2315
2316 # Check whether LC_MESSAGES is available in <locale.h>.
2317 # Ulrich Drepper <drepper@cygnus.com>, 1995.
2318 #
2319 # This file can be copied and used freely without restrictions.  It can
2320 # be used in projects which are not available under the GNU Public License
2321 # but which still want to provide support for the GNU gettext functionality.
2322 # Please note that the actual code is *not* freely available.
2323
2324 # serial 1
2325
2326 AC_DEFUN(AM_LC_MESSAGES,
2327   [if test $ac_cv_header_locale_h = yes; then
2328     AC_CACHE_CHECK([for LC_MESSAGES], am_cv_val_LC_MESSAGES,
2329       [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
2330        am_cv_val_LC_MESSAGES=yes, am_cv_val_LC_MESSAGES=no)])
2331     if test $am_cv_val_LC_MESSAGES = yes; then
2332       AC_DEFINE(HAVE_LC_MESSAGES)
2333     fi
2334   fi])
2335
2336 # Do all the work for Automake.  This macro actually does too much --
2337 # some checks are only needed if your package does certain things.
2338 # But this isn't really a big deal.
2339
2340 # serial 1
2341
2342 dnl Usage:
2343 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
2344
2345 AC_DEFUN(AM_INIT_AUTOMAKE,
2346 [AC_REQUIRE([AC_PROG_INSTALL])
2347 PACKAGE=[$1]
2348 AC_SUBST(PACKAGE)
2349 VERSION=[$2]
2350 AC_SUBST(VERSION)
2351 dnl test to see if srcdir already configured
2352 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
2353   AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
2354 fi
2355 ifelse([$3],,
2356 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
2357 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
2358 AC_REQUIRE([AM_SANITY_CHECK])
2359 AC_REQUIRE([AC_ARG_PROGRAM])
2360 dnl FIXME This is truly gross.
2361 missing_dir=`cd $ac_aux_dir && pwd`
2362 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
2363 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
2364 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
2365 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
2366 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
2367 AC_REQUIRE([AC_PROG_MAKE_SET])])
2368
2369 #
2370 # Check to make sure that the build environment is sane.
2371 #
2372
2373 AC_DEFUN(AM_SANITY_CHECK,
2374 [AC_MSG_CHECKING([whether build environment is sane])
2375 # Just in case
2376 sleep 1
2377 echo timestamp > conftestfile
2378 # Do `set' in a subshell so we don't clobber the current shell's
2379 # arguments.  Must try -L first in case configure is actually a
2380 # symlink; some systems play weird games with the mod time of symlinks
2381 # (eg FreeBSD returns the mod time of the symlink's containing
2382 # directory).
2383 if (
2384    set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
2385    if test "[$]*" = "X"; then
2386       # -L didn't work.
2387       set X `ls -t $srcdir/configure conftestfile`
2388    fi
2389    if test "[$]*" != "X $srcdir/configure conftestfile" \
2390       && test "[$]*" != "X conftestfile $srcdir/configure"; then
2391
2392       # If neither matched, then we have a broken ls.  This can happen
2393       # if, for instance, CONFIG_SHELL is bash and it inherits a
2394       # broken ls alias from the environment.  This has actually
2395       # happened.  Such a system could not be considered "sane".
2396       AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
2397 alias in your environment])
2398    fi
2399
2400    test "[$]2" = conftestfile
2401    )
2402 then
2403    # Ok.
2404    :
2405 else
2406    AC_MSG_ERROR([newly created file is older than distributed files!
2407 Check your system clock])
2408 fi
2409 rm -f conftest*
2410 AC_MSG_RESULT(yes)])
2411
2412 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
2413 dnl The program must properly implement --version.
2414 AC_DEFUN(AM_MISSING_PROG,
2415 [AC_MSG_CHECKING(for working $2)
2416 # Run test in a subshell; some versions of sh will print an error if
2417 # an executable is not found, even if stderr is redirected.
2418 # Redirect stdin to placate older versions of autoconf.  Sigh.
2419 if ($2 --version) < /dev/null > /dev/null 2>&1; then
2420    $1=$2
2421    AC_MSG_RESULT(found)
2422 else
2423    $1="$3/missing $2"
2424    AC_MSG_RESULT(missing)
2425 fi
2426 AC_SUBST($1)])
2427
2428 # Like AC_CONFIG_HEADER, but automatically create stamp file.
2429
2430 AC_DEFUN(AM_CONFIG_HEADER,
2431 [AC_PREREQ([2.12])
2432 AC_CONFIG_HEADER([$1])
2433 dnl When config.status generates a header, we must update the stamp-h file.
2434 dnl This file resides in the same directory as the config header
2435 dnl that is generated.  We must strip everything past the first ":",
2436 dnl and everything past the last "/".
2437 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
2438 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
2439 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
2440 <<am_indx=1
2441 for am_file in <<$1>>; do
2442   case " <<$>>CONFIG_HEADERS " in
2443   *" <<$>>am_file "*<<)>>
2444     echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
2445     ;;
2446   esac
2447   am_indx=`expr "<<$>>am_indx" + 1`
2448 done<<>>dnl>>)
2449 changequote([,]))])
2450