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       ;;
1076     xgnu)
1077       AC_MSG_RESULT(gnu)
1078
1079       # Declare intention to use gettext, and add support for specific
1080       # languages.
1081       # For some reason, ALL_LINGUAS has to be before AM_GNU_GETTEXT
1082       ALL_LINGUAS="de fr"
1083       # Don't call AM_GNU_GETTEXT here. Instead, assume glibc.
1084       # Need to deal with MSGFMT, USE_NLS, and glibcpp_[P,M]OFILES
1085       USE_NLS=yes
1086
1087       # Export the build objects.
1088       for ling in $ALL_LINGUAS; do \
1089         glibcpp_MOFILES="$glibcpp_MOFILES $ling.mo"; \
1090         glibcpp_POFILES="$glibcpp_POFILES $ling.po"; \
1091       done
1092       AC_SUBST(glibcpp_MOFILES)
1093       AC_SUBST(glibcpp_POFILES)
1094
1095       CLOCALE_H=config/locale/c_locale_gnu.h
1096       CLOCALE_CC=config/locale/c_locale_gnu.cc
1097       CCODECVT_H=config/locale/codecvt_specializations_ieee_1003.1-200x.h
1098       CMESSAGES_H=config/locale/messages_members_gnu.h
1099       CMESSAGES_CC=config/locale/messages_members_gnu.cc
1100       ;;
1101     xieee_1003.1)
1102       AC_MSG_RESULT(generic)
1103
1104       # Don't use gettext.
1105       USE_NLS=no
1106
1107       CLOCALE_H=config/locale/c_locale_ieee_1003.1-200x.h
1108       CLOCALE_CC=config/locale/c_locale_ieee_1003.1-200x.cc
1109       CCODECVT_H=config/locale/codecvt_specializations_ieee_1003.1-200x.h
1110       CMESSAGES_H=config/locale/messages_members_ieee_1003.1-200x.h
1111       CMESSAGES_CC=config/locale/messages_members_ieee_1003.1-200x.cc
1112       ;;
1113     *)
1114       echo "$enable_clocale is an unknown locale package" 1>&2
1115       exit 1
1116       ;;
1117   esac
1118
1119   # This is where the testsuite looks for locale catalogs, using the
1120   # -DLOCALEDIR define during testsuite compilation.
1121   glibcpp_localedir=${glibcpp_builddir}/po/share/locale
1122   AC_SUBST(glibcpp_localedir)
1123
1124   AC_SUBST(USE_NLS)
1125   AC_SUBST(CLOCALE_H)
1126   AC_SUBST(CCODECVT_H)
1127   AC_SUBST(CMESSAGES_H)
1128   AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc)
1129   AC_LINK_FILES($CMESSAGES_CC, src/messages_members.cc)
1130 ])
1131
1132
1133 dnl
1134 dnl Check for which I/O library to use:  libio, or something specific.
1135 dnl
1136 dnl GLIBCPP_ENABLE_CSTDIO
1137 dnl --enable-cstdio=libio sets config/io/c_io_libio.h and friends
1138 dnl
1139 dnl default is stdio
1140 dnl
1141 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1142   AC_MSG_CHECKING([for cstdio to use])
1143   AC_ARG_ENABLE(cstdio,
1144   [  --enable-cstdio         enable stdio for target io package.
1145   --enable-cstdio=LIB     use LIB target-speific io package. [default=stdio]
1146   ],
1147   if test x$enable_cstdio = xno; then
1148      enable_cstdio=stdio
1149   fi,
1150      enable_cstdio=stdio)
1151
1152   enable_cstdio_flag=$enable_cstdio
1153
1154   dnl Check if a valid I/O package
1155   case x${enable_cstdio_flag} in
1156     xlibio)
1157       CSTDIO_H=config/io/c_io_libio.h
1158       BASIC_FILE_H=config/io/basic_file_libio.h
1159       BASIC_FILE_CC=config/io/basic_file_libio.cc
1160       AC_MSG_RESULT(libio)
1161
1162       # see if we are on a system with libio native (ie, linux)
1163       AC_CHECK_HEADER(libio.h,  has_libio=yes, has_libio=no)
1164
1165       # Need to check and see what version of glibc is being used. If
1166       # it's not glibc-2.2 or higher, then we'll need to go ahead and
1167       # compile most of libio for linux systems.
1168       if test x$has_libio = x"yes"; then
1169         case "$target" in
1170           *-*-linux*)
1171               AC_MSG_CHECKING([for glibc version >= 2.2])
1172               AC_EGREP_CPP([ok], [
1173             #include <features.h>
1174               #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1175                     ok
1176               #endif
1177               ], glibc_satisfactory=yes, glibc_satisfactory=no)
1178               AC_MSG_RESULT($glibc_satisfactory)
1179             ;;
1180         esac
1181
1182         # XXX at the moment, admit defeat and force the recompilation
1183         # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1184         glibc_satisfactory=no
1185
1186         if test x$glibc_satisfactory = x"yes"; then
1187            need_libio=no
1188            need_wlibio=no
1189         else
1190            need_libio=yes
1191            # bkoz XXX need to add checks to enable this
1192            # pme XXX here's a first pass at such a check
1193            if test x$enable_c_mbchar != xno; then
1194               need_wlibio=yes
1195            else
1196               need_wlibio=no
1197            fi
1198         fi
1199
1200       else
1201          # Using libio, but <libio.h> doesn't exist on the target system. . .
1202          need_libio=yes
1203          # bkoz XXX need to add checks to enable this
1204          # pme XXX here's a first pass at such a check
1205          if test x$enable_c_mbchar != xno; then
1206              need_wlibio=yes
1207          else
1208              need_wlibio=no
1209          fi
1210       fi
1211       ;;
1212     xstdio | x | xno | xnone | xyes)
1213       # default
1214       CSTDIO_H=config/io/c_io_stdio.h
1215       BASIC_FILE_H=config/io/basic_file_stdio.h
1216       BASIC_FILE_CC=config/io/basic_file_stdio.cc
1217       AC_MSG_RESULT(stdio)
1218
1219       # We're not using stdio.
1220       need_libio=no
1221       need_wlibio=no
1222       ;;
1223     *)
1224       echo "$enable_cstdio is an unknown io package" 1>&2
1225       exit 1
1226       ;;
1227   esac
1228   AC_SUBST(CSTDIO_H)
1229   AC_SUBST(BASIC_FILE_H)
1230   AC_LINK_FILES($BASIC_FILE_CC, src/basic_file.cc)
1231
1232   # 2000-08-04 bkoz hack
1233   CCODECVT_C=config/io/c_io_libio_codecvt.c
1234   AC_SUBST(CCODECVT_C)
1235   # 2000-08-04 bkoz hack
1236
1237   AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1238                  test "$need_libio" = yes || test "$need_wlibio" = yes)
1239   AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1240   AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1241   if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1242     libio_la=../libio/libio.la
1243   else
1244     libio_la=
1245   fi
1246   AC_SUBST(libio_la)
1247 ])
1248
1249
1250 dnl
1251 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
1252 dnl We must stage the required headers so that they will be installed
1253 dnl with the library (unlike libgcc, the STL implementation is provided
1254 dnl solely within headers).  Since we must not inject random user-space
1255 dnl macro names into user-provided C++ code, we first stage into <file>-in
1256 dnl and process to <file> with an output command.  The reason for a two-
1257 dnl stage process here is to correctly handle $srcdir!=$objdir without
1258 dnl having to write complex code (the sed commands to clean the macro
1259 dnl namespace are complex and fragile enough as it is).  We must also
1260 dnl add a relative path so that -I- is supported properly.
1261 dnl
1262 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1263   AC_MSG_CHECKING([for thread model used by GCC])
1264   target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
1265   AC_MSG_RESULT([$target_thread_file])
1266
1267   if test $target_thread_file != single; then
1268     AC_DEFINE(HAVE_GTHR_DEFAULT)
1269     AC_DEFINE(_GLIBCPP_SUPPORTS_WEAK, __GXX_WEAK__)
1270   fi
1271
1272   glibcpp_thread_h=gthr-$target_thread_file.h
1273   AC_SUBST(glibcpp_thread_h)
1274 ])
1275
1276
1277 dnl
1278 dnl Check for exception handling support.  If an explicit enable/disable
1279 dnl sjlj exceptions is given, we don't have to detect.  Otherwise the
1280 dnl target may or may not support call frame exceptions.
1281 dnl
1282 dnl GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
1283 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1284 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1285 dnl
1286 dnl Define _GLIBCPP_SJLJ_EXCEPTIONS if the compiler is configured for it.
1287 dnl
1288 AC_DEFUN(GLIBCPP_ENABLE_SJLJ_EXCEPTIONS, [
1289   AC_MSG_CHECKING([for exception model to use])
1290   AC_LANG_SAVE
1291   AC_LANG_CPLUSPLUS
1292   AC_ARG_ENABLE(sjlj-exceptions,
1293   [  --enable-sjlj-exceptions  force use of builtin_setjmp for exceptions],
1294   [:],
1295   [dnl Botheration.  Now we've got to detect the exception model.
1296    dnl Link tests against libgcc.a are problematic since -- at least
1297    dnl as of this writing -- we've not been given proper -L bits for
1298    dnl single-tree newlib and libgloss.
1299    dnl
1300    dnl This is what AC_TRY_COMPILE would do if it didn't delete the
1301    dnl conftest files before we got a change to grep them first.
1302    cat > conftest.$ac_ext << EOF
1303 [#]line __oline__ "configure"
1304 struct S { ~S(); };
1305 void bar();
1306 void foo()
1307 {
1308   S s;
1309   bar();
1310 }
1311 EOF
1312    old_CXXFLAGS="$CXXFLAGS"
1313    CXXFLAGS=-S
1314    if AC_TRY_EVAL(ac_compile); then
1315      if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1316        enable_sjlj_exceptions=yes
1317      elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1318        enable_sjlj_exceptions=no
1319      fi
1320    fi
1321    CXXFLAGS="$old_CXXFLAGS"
1322    rm -f conftest*])
1323    if test x$enable_sjlj_exceptions = xyes; then
1324      AC_DEFINE(_GLIBCPP_SJLJ_EXCEPTIONS, 1,
1325         [Define if the compiler is configured for setjmp/longjmp exceptions.])
1326      ac_exception_model_name=sjlj
1327    elif test x$enable_sjlj_exceptions = xno; then
1328      ac_exception_model_name="call frame"
1329    else
1330      AC_MSG_ERROR([unable to detect exception model])
1331    fi
1332    AC_LANG_RESTORE
1333    AC_MSG_RESULT($ac_exception_model_name)
1334 ])
1335
1336
1337 dnl
1338 dnl Check for ISO/IEC 9899:1999 "C99" support.
1339 dnl
1340 dnl GLIBCPP_ENABLE_C99
1341 dnl --enable-c99 defines _GLIBCPP_USE_C99
1342 dnl --disable-c99 leaves _GLIBCPP_USE_C99 undefined
1343 dnl  +  Usage:  GLIBCPP_ENABLE_C99[(DEFAULT)]
1344 dnl       Where DEFAULT is either `yes' or `no'.  If omitted, it
1345 dnl       defaults to `no'.
1346 dnl  +  If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
1347 dnl
1348 dnl GLIBCPP_ENABLE_C99
1349 AC_DEFUN(GLIBCPP_ENABLE_C99, [dnl
1350   define([GLIBCPP_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
1351
1352   AC_ARG_ENABLE(c99,
1353   changequote(<<, >>)dnl
1354   <<--enable-c99      turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
1355   changequote([, ])dnl
1356   [case "$enableval" in
1357    yes) enable_c99=yes ;;
1358    no)  enable_c99=no ;;
1359    *)   AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
1360    esac],
1361   enable_c99=GLIBCPP_ENABLE_C99_DEFAULT)dnl
1362
1363   AC_LANG_SAVE
1364   AC_LANG_CPLUSPLUS
1365
1366   # Check for the existence of <math.h> functions used if C99 is enabled.
1367   ac_c99_math=yes;
1368   AC_MSG_CHECKING([for ISO C99 support in <math.h>])
1369   AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
1370   AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
1371   AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
1372   AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
1373   AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
1374   AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
1375   AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
1376   AC_TRY_COMPILE([#include <math.h>],
1377                  [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
1378   AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
1379   AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
1380   AC_TRY_COMPILE([#include <math.h>],
1381                  [islessgreater(0.0,0.0);],, [ac_c99_math=no])
1382   AC_TRY_COMPILE([#include <math.h>],
1383                  [isunordered(0.0,0.0);],, [ac_c99_math=no])
1384   AC_MSG_RESULT($ac_c99_math)
1385
1386   # Check for the existence in <stdio.h> of vscanf, et. al.
1387   ac_c99_stdio=yes;
1388   AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
1389   AC_TRY_COMPILE([#include <stdio.h>],
1390                  [snprintf("12", 0, "%i");],, [ac_c99_stdio=no])
1391   AC_TRY_COMPILE([#include <stdio.h>
1392                   #include <stdarg.h>
1393                   void foo(char* fmt, ...)
1394                   {va_list args; va_start(args, fmt);
1395                   vfscanf(stderr, "%i", args);}],
1396                   [],, [ac_c99_stdio=no])
1397   AC_TRY_COMPILE([#include <stdio.h>
1398                   #include <stdarg.h>
1399                   void foo(char* fmt, ...)
1400                   {va_list args; va_start(args, fmt);
1401                   vscanf("%i", args);}],
1402                   [],, [ac_c99_stdio=no])
1403   AC_TRY_COMPILE([#include <stdio.h>
1404                   #include <stdarg.h>
1405                   void foo(char* fmt, ...)
1406                   {va_list args; va_start(args, fmt);
1407                   vsnprintf(fmt, 0, "%i", args);}],
1408                   [],, [ac_c99_stdio=no])
1409   AC_TRY_COMPILE([#include <stdio.h>
1410                   #include <stdarg.h>
1411                   void foo(char* fmt, ...)
1412                   {va_list args; va_start(args, fmt);
1413                   vsscanf(fmt, "%i", args);}],
1414                   [],, [ac_c99_stdio=no])
1415   AC_MSG_RESULT($ac_c99_stdio)
1416
1417   # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1418   ac_c99_stdlib=yes;
1419   AC_MSG_CHECKING([for lldiv_t declaration])
1420   AC_CACHE_VAL(ac_c99_lldiv_t, [
1421   AC_TRY_COMPILE([#include <stdlib.h>],
1422                    [ lldiv_t mydivt;],
1423                    [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
1424   ])
1425   AC_MSG_RESULT($ac_c99_lldiv_t)
1426
1427   AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1428   AC_TRY_COMPILE([#include <stdlib.h>],
1429                  [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
1430   AC_TRY_COMPILE([#include <stdlib.h>],
1431                  [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
1432   AC_TRY_COMPILE([#include <stdlib.h>],
1433                  [char* tmp; strtoll("gnu", &tmp, 10);],, [ac_c99_stdlib=no])
1434   AC_TRY_COMPILE([#include <stdlib.h>],
1435                  [char* tmp; strtoull("gnu", &tmp, 10);],, [ac_c99_stdlib=no])
1436   AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
1437   AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
1438   AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
1439   AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no])
1440   if test x"$ac_c99_lldiv_t" = x"no"; then
1441     ac_c99_stdlib=no;
1442   fi;
1443   AC_MSG_RESULT($ac_c99_stdlib)
1444
1445   # Check for the existence of <wchar.h> functions used if C99 is enabled.
1446   # XXX the wchar.h checks should be rolled into the general C99 bits.
1447   ac_c99_wchar=yes;
1448   AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>])
1449   AC_TRY_COMPILE([#include <wchar.h>],
1450                  [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
1451   AC_TRY_COMPILE([#include <wchar.h>],
1452                  [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
1453   AC_TRY_COMPILE([#include <wchar.h>],
1454                  [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
1455   AC_MSG_RESULT($ac_c99_wchar)
1456
1457   AC_MSG_CHECKING([for enabled ISO C99 support])
1458   if test x"$ac_c99_math" = x"no" ||
1459      test x"$ac_c99_stdio" = x"no" ||
1460      test x"$ac_c99_stdlib" = x"no" ||
1461      test x"$ac_c99_wchar" = x"no"; then
1462     enable_c99=no;
1463   fi;
1464   AC_MSG_RESULT($enable_c99)
1465
1466   # Option parsed, now set things appropriately
1467   if test x"$enable_c99" = x"yes"; then
1468     AC_DEFINE(_GLIBCPP_USE_C99)
1469   fi
1470
1471   AC_LANG_RESTORE
1472 ])
1473
1474
1475 dnl
1476 dnl Check for template specializations for the 'long long' type extension.
1477 dnl NB: Must check for C99 support before calling _GLIBCPP_ENABLE_LONG_LONG
1478 dnl
1479 dnl GLIBCPP_ENABLE_LONG_LONG
1480 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1481 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1482 dnl  +  Usage:  GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1483 dnl       Where DEFAULT is either `yes' or `no'.  If omitted, it
1484 dnl       defaults to `no'.
1485 dnl  +  If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1486 dnl
1487 dnl GLIBCPP_ENABLE_LONG_LONG
1488 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1489   define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1490
1491   AC_ARG_ENABLE(long-long,
1492   changequote(<<, >>)dnl
1493   <<--enable-long-long      turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1494   changequote([, ])dnl
1495   [case "$enableval" in
1496    yes) enable_long_long=yes ;;
1497    no)  enable_long_long=no ;;
1498    *)   AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1499    esac],
1500   enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1501
1502   # iostreams require strtoll, strtoull to compile. If the
1503   # GLIBCPP_ENABLE_C99 tests found these, and if C99 support is enabled,
1504   # go ahead and allow long long to be used.
1505   if test x"$enable_c99" = x"no"; then
1506     enable_long_long=no;
1507   fi
1508
1509   # Option parsed, now set things appropriately
1510   AC_MSG_CHECKING([for enabled long long support])
1511   if test x"$enable_long_long" = xyes; then
1512     AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1513   fi
1514   AC_MSG_RESULT($enable_long_long)
1515 ])
1516
1517
1518 dnl
1519 dnl Check for what kind of C headers to use.
1520 dnl
1521 dnl GLIBCPP_ENABLE_CHEADERS
1522 dnl --enable-cheaders= [does stuff].
1523 dnl --disable-cheaders [does not do anything, really].
1524 dnl  +  This will eventually need to be 'c_shadow' by default.
1525 dnl  +  Usage:  GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1526 dnl       Where DEFAULT is either `c' or `c_std' or 'c_shadow'.
1527 dnl       If ommitted, it defaults to `c_std'.
1528 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1529 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1530 AC_MSG_CHECKING([for c header strategy to use])
1531 AC_ARG_ENABLE(cheaders,
1532 changequote(<<, >>)dnl
1533 <<  --enable-cheaders       construct "C" header files for g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1534 changequote([, ])
1535   [case "$enableval" in
1536    c)
1537         enable_cheaders=c
1538         ;;
1539    c_std)
1540         enable_cheaders=c_std
1541         ;;
1542    c_shadow)
1543         enable_cheaders=c_shadow
1544         ;;
1545    *)   AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1546         ;;
1547   esac],
1548   enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1549   AC_MSG_RESULT($enable_cheaders)
1550
1551   dnl Option parsed, now set things appropriately
1552   case "$enable_cheaders" in
1553     c_shadow)
1554         CSHADOW_FLAGS="-fno-builtin"
1555         C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_shadow'
1556         AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1557         ;;
1558     c_std)
1559         CSHADOW_FLAGS=""
1560         C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_std'
1561         ;;
1562     c)
1563         CSHADOW_FLAGS=""
1564         C_INCLUDE_DIR='${glibcpp_srcdir}/include/c'
1565         ;;
1566   esac
1567
1568   AC_SUBST(CSHADOW_FLAGS)
1569   AC_SUBST(C_INCLUDE_DIR)
1570   AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cheaders" = c_shadow)
1571 ])
1572
1573
1574 dnl
1575 dnl Check for wide character support.  Has the same effect as the option
1576 dnl in gcc's configure, but in a form that autoconf can mess with.
1577 dnl
1578 dnl GLIBCPP_ENABLE_C_MBCHAR
1579 dnl --enable-c-mbchar requests all the wchar_t stuff.
1580 dnl --disable-c-mbchar doesn't.
1581 dnl  +  Usage:  GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1582 dnl       Where DEFAULT is either `yes' or `no'.  If ommitted, it
1583 dnl       defaults to `no'.
1584 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1585 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1586 AC_ARG_ENABLE(c-mbchar,
1587 changequote(<<, >>)dnl
1588 <<  --enable-c-mbchar       enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1589 changequote([, ])dnl
1590 [case "$enableval" in
1591  yes) enable_c_mbchar=yes ;;
1592  no)  enable_c_mbchar=no ;;
1593  *)   AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1594  esac],
1595 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1596 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1597 ])
1598
1599
1600 dnl
1601 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1602 dnl
1603 dnl TOPLEVEL_INCLUDES
1604 dnl LIBMATH_INCLUDES
1605 dnl LIBSUPCXX_INCLUDES
1606 dnl LIBIO_INCLUDES
1607 dnl CSHADOW_INCLUDES
1608 dnl
1609 dnl GLIBCPP_EXPORT_INCLUDES
1610 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1611   # Root level of the build directory include sources.
1612   GLIBCPP_INCLUDES="-I${glibcpp_builddir}/include/${target_alias} -I${glibcpp_builddir}/include"
1613
1614   # Passed down for canadian crosses.
1615   if test x"$CANADIAN" = xyes; then
1616     TOPLEVEL_INCLUDES='-I$(includedir)'
1617   fi
1618
1619   LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1620
1621   LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1622
1623   if test x"$need_libio" = xyes; then
1624     LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1625     AC_SUBST(LIBIO_INCLUDES)
1626   fi
1627
1628   # Now, export this to all the little Makefiles....
1629   AC_SUBST(GLIBCPP_INCLUDES)
1630   AC_SUBST(TOPLEVEL_INCLUDES)
1631   AC_SUBST(LIBMATH_INCLUDES)
1632   AC_SUBST(LIBSUPCXX_INCLUDES)
1633 ])
1634
1635
1636 dnl
1637 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1638 dnl
1639 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1640   # Optimization flags that are probably a good idea for thrill-seekers. Just
1641   # uncomment the lines below and make, everything else is ready to go...
1642   # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1643   OPTIMIZE_CXXFLAGS=
1644   AC_SUBST(OPTIMIZE_CXXFLAGS)
1645
1646   WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1647   AC_SUBST(WARN_FLAGS)
1648 ])
1649
1650 dnl
1651 dnl  GLIBCPP_EXPORT_INSTALL_INFO
1652 dnl  calculates gxx_install_dir
1653 dnl  exports glibcpp_toolexecdir
1654 dnl  exports glibcpp_toolexeclibdir
1655 dnl  exports glibcpp_prefixdir
1656 dnl
1657 dnl Assumes cross_compiling bits already done, and with_cross_host in
1658 dnl particular
1659 dnl
1660 dnl GLIBCPP_EXPORT_INSTALL_INFO
1661 AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
1662 # Assumes glibcpp_builddir, glibcpp_srcdir are alreay set up and
1663 # exported correctly in GLIBCPP_CONFIGURE.
1664 glibcpp_toolexecdir=no
1665 glibcpp_toolexeclibdir=no
1666 glibcpp_prefixdir=${prefix}
1667
1668 AC_MSG_CHECKING([for interface version number])
1669 libstdcxx_interface=$INTERFACE
1670 AC_MSG_RESULT($libstdcxx_interface)
1671
1672 # Process the option --with-gxx-include-dir=<path to include-files directory>
1673 AC_MSG_CHECKING([for --with-gxx-include-dir])
1674 AC_ARG_WITH(gxx-include-dir,
1675 [  --with-gxx-include-dir  the installation directory for include files],
1676 [case "${withval}" in
1677   yes)
1678     AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1679     gxx_include_dir=no
1680     ;;
1681   no)
1682     gxx_include_dir=no
1683     ;;
1684   *)
1685     gxx_include_dir=${withval}
1686     ;;
1687 esac], [gxx_include_dir=no])
1688 AC_MSG_RESULT($gxx_include_dir)
1689
1690 # Process the option "--enable-version-specific-runtime-libs"
1691 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1692 AC_ARG_ENABLE(version-specific-runtime-libs,
1693 [  --enable-version-specific-runtime-libs    Specify that runtime libraries should be installed in a compiler-specific directory ],
1694 [  version_specific_libs=yes
1695 # Need the gcc compiler version to know where to install libraries
1696 # and header files if --enable-version-specific-runtime-libs option
1697 # is selected.
1698 changequote(,)dnl
1699 gcc_version_trigger=${srcdir}/../gcc/version.c
1700 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
1701 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1702 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/g++
1703 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1704 glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
1705 changequote([,])dnl
1706 ],version_specific_libs=no)
1707 AC_MSG_RESULT($version_specific_libs)
1708
1709 # Default case for install directory for include files.
1710 if test x"$version_specific_libs" = x"no" \
1711    && test x"$gxx_include_dir" = x"no"; then
1712   gxx_include_dir='$(prefix)'/include/g++-${libstdcxx_interface}
1713 fi
1714
1715 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
1716 # Install a library built with a cross compiler in tooldir, not libdir.
1717 if test x"$glibcpp_toolexecdir" = x"no"; then
1718   if test -n "$with_cross_host" &&
1719      test x"$with_cross_host" != x"no"; then
1720     glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
1721     glibcpp_toolexeclibdir='$(toolexecdir)/lib$(MULTISUBDIR)'
1722   else
1723     glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1724     glibcpp_toolexeclibdir='$(libdir)$(MULTISUBDIR)'
1725   fi
1726 fi
1727
1728 AC_MSG_CHECKING([for install location])
1729 AC_MSG_RESULT($gxx_include_dir)
1730
1731 AC_SUBST(glibcpp_prefixdir)
1732 AC_SUBST(gxx_include_dir)
1733 AC_SUBST(glibcpp_toolexecdir)
1734 AC_SUBST(glibcpp_toolexeclibdir)
1735 ])
1736
1737
1738 # Check for functions in math library.
1739 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1740 #
1741 # This file can be copied and used freely without restrictions.  It can
1742 # be used in projects which are not available under the GNU Public License
1743 # but which still want to provide support for the GNU gettext functionality.
1744 # Please note that the actual code is *not* freely available.
1745
1746 # serial 1
1747
1748 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1749 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1750 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1751 AC_SUBST(LIBMATHOBJS)dnl
1752 ])
1753
1754
1755
1756 dnl This macro searches for a GNU version of make.  If a match is found, the
1757 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1758 dnl set to "#". This is useful for  including a special features in a Makefile,
1759 dnl which cannot be handled by other versions of make.  The variable
1760 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1761 dnl the empty string otherwise.
1762 dnl
1763 dnl Here is an example of its use:
1764 dnl
1765 dnl Makefile.in might contain:
1766 dnl
1767 dnl     # A failsafe way of putting a dependency rule into a makefile
1768 dnl     $(DEPEND):
1769 dnl             $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1770 dnl
1771 dnl     @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1772 dnl     @ifGNUmake@ include $(DEPEND)
1773 dnl     @ifGNUmake@ endif
1774 dnl
1775 dnl Then configure.in would normally contain:
1776 dnl
1777 dnl     CHECK_GNU_MAKE()
1778 dnl     AC_OUTPUT(Makefile)
1779 dnl
1780 dnl Then perhaps to cause gnu make to override any other make, we could do
1781 dnl something like this (note that GNU make always looks for GNUmakefile first):
1782 dnl
1783 dnl     if  ! test x$_cv_gnu_make_command = x ; then
1784 dnl             mv Makefile GNUmakefile
1785 dnl             echo .DEFAULT: > Makefile ;
1786 dnl             echo \  $_cv_gnu_make_command \$@ >> Makefile;
1787 dnl     fi
1788 dnl
1789 dnl Then, if any (well almost any) other make is called, and GNU make also
1790 dnl exists, then the other make wraps the GNU make.
1791 dnl
1792 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1793 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1794 dnl
1795 dnl #### Changes for libstdc++-v3:  reformatting and linewrapping; prepending
1796 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1797 dnl #### conditional's subshell (" --version" is not a command), using a
1798 dnl #### different option to grep(1).
1799 dnl #### -pme
1800 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
1801 dnl #### ${MAKE:-make}).
1802 dnl #### -msokolov
1803 AC_DEFUN(
1804   GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1805           _cv_gnu_make_command='' ;
1806 dnl Search all the common names for GNU make
1807           for a in "${MAKE-make}" make gmake gnumake ; do
1808                   if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1809                   then
1810                           _cv_gnu_make_command=$a ;
1811                           break;
1812                   fi
1813           done ;
1814   ) ;
1815 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1816 dnl string, '#' otherwise
1817   if test  "x$_cv_gnu_make_command" != "x"  ; then
1818           ifGNUmake='' ;
1819   else
1820           ifGNUmake='#' ;
1821   fi
1822   AC_SUBST(ifGNUmake)
1823 ])
1824
1825
1826 dnl Check for headers for, and arguments to, the setrlimit() function.
1827 dnl Used only in testsuite_hooks.h.
1828 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT_ancilliary, [
1829   AC_TRY_COMPILE([#include <sys/resource.h>
1830                   #include <unistd.h>
1831                  ], [ int f = RLIMIT_$1 ; ],
1832                  [glibcpp_mresult=1], [glibcpp_mresult=0])
1833   AC_DEFINE_UNQUOTED(HAVE_MEMLIMIT_$1, $glibcpp_mresult,
1834                      [Only used in build directory testsuite_hooks.h.])
1835 ])
1836 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT, [
1837   setrlimit_have_headers=yes
1838   AC_CHECK_HEADERS(sys/resource.h unistd.h,
1839                    [],
1840                    setrlimit_have_headers=no)
1841   # If don't have the headers, then we can't run the tests now, and we
1842   # won't be seeing any of these during testsuite compilation.
1843   if test $setrlimit_have_headers = yes; then
1844     # Can't do these in a loop, else the resulting syntax is wrong.
1845     GLIBCPP_CHECK_SETRLIMIT_ancilliary(DATA)
1846     GLIBCPP_CHECK_SETRLIMIT_ancilliary(RSS)
1847     GLIBCPP_CHECK_SETRLIMIT_ancilliary(VMEM)
1848     GLIBCPP_CHECK_SETRLIMIT_ancilliary(AS)
1849
1850     # Check for rlimit, setrlimit.
1851     AC_CACHE_VAL(ac_setrlimit, [
1852       AC_TRY_COMPILE([#include <sys/resource.h>
1853                       #include <unistd.h>
1854                      ],
1855                      [ struct rlimit r; setrlimit(0, &r);],
1856                      [ac_setrlimit=yes], [ac_setrlimit=no])
1857     ])
1858   fi
1859
1860   AC_MSG_CHECKING([for testsuite memory limit support])
1861   if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then
1862     ac_mem_limits=yes
1863     AC_DEFINE(_GLIBCPP_MEM_LIMITS)
1864   else
1865     ac_mem_limits=no
1866   fi
1867   AC_MSG_RESULT($ac_mem_limits)
1868 ])
1869
1870
1871 dnl
1872 dnl Does any necessary configuration of the testsuite directory.  Generates
1873 dnl the testsuite_hooks.h header.
1874 dnl
1875 dnl GLIBCPP_CONFIGURE_TESTSUITE  [no args]
1876 AC_DEFUN(GLIBCPP_CONFIGURE_TESTSUITE, [
1877   GLIBCPP_CHECK_SETRLIMIT
1878 ])
1879
1880
1881 sinclude(../libtool.m4)
1882 dnl The lines below arrange for aclocal not to bring an installed
1883 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1884 dnl add a definition of LIBTOOL to Makefile.in.
1885 ifelse(,,,[AC_SUBST(LIBTOOL)
1886 AC_DEFUN([AM_PROG_LIBTOOL])
1887 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1888 AC_DEFUN([AC_PROG_LD])
1889 ])
1890
1891
1892 # Check whether LC_MESSAGES is available in <locale.h>.
1893 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1894 #
1895 # This file file be copied and used freely without restrictions.  It can
1896 # be used in projects which are not available under the GNU Public License
1897 # but which still want to provide support for the GNU gettext functionality.
1898 # Please note that the actual code is *not* freely available.
1899
1900 # serial 1
1901
1902 AC_DEFUN(AC_LC_MESSAGES, [
1903   AC_CHECK_HEADER(locale.h, [
1904     AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1905       [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1906        ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1907     if test $ac_cv_val_LC_MESSAGES = yes; then
1908       AC_DEFINE(HAVE_LC_MESSAGES)
1909     fi
1910   ])
1911 ])
1912
1913
1914 # Add --enable-maintainer-mode option to configure.
1915 # From Jim Meyering
1916
1917 # serial 1
1918
1919 AC_DEFUN(AM_MAINTAINER_MODE,
1920 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1921   dnl maintainer-mode is disabled by default
1922   AC_ARG_ENABLE(maintainer-mode,
1923 [  --enable-maintainer-mode enable make rules and dependencies not useful
1924                           (and sometimes confusing) to the casual installer],
1925       USE_MAINTAINER_MODE=$enableval,
1926       USE_MAINTAINER_MODE=no)
1927   AC_MSG_RESULT($USE_MAINTAINER_MODE)
1928   AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
1929   MAINT=$MAINTAINER_MODE_TRUE
1930   AC_SUBST(MAINT)dnl
1931 ]
1932 )
1933
1934 # Define a conditional.
1935
1936 AC_DEFUN(AM_CONDITIONAL,
1937 [AC_SUBST($1_TRUE)
1938 AC_SUBST($1_FALSE)
1939 if $2; then
1940   $1_TRUE=
1941   $1_FALSE='#'
1942 else
1943   $1_TRUE='#'
1944   $1_FALSE=
1945 fi])
1946
1947 # Macro to add for using GNU gettext.
1948 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1949 #
1950 # This file can be copied and used freely without restrictions.  It can
1951 # be used in projects which are not available under the GNU Public License
1952 # but which still want to provide support for the GNU gettext functionality.
1953 # Please note that the actual code is *not* freely available.
1954
1955 # serial 5
1956
1957 AC_DEFUN(AM_WITH_NLS,
1958   [AC_MSG_CHECKING([whether NLS is requested])
1959     dnl Default is enabled NLS
1960     AC_ARG_ENABLE(nls,
1961       [  --disable-nls           do not use Native Language Support],
1962       USE_NLS=$enableval, USE_NLS=yes)
1963     AC_MSG_RESULT($USE_NLS)
1964     AC_SUBST(USE_NLS)
1965
1966     USE_INCLUDED_LIBINTL=no
1967
1968     dnl If we use NLS figure out what method
1969     if test "$USE_NLS" = "yes"; then
1970       AC_DEFINE(ENABLE_NLS)
1971       AC_MSG_CHECKING([whether included gettext is requested])
1972       AC_ARG_WITH(included-gettext,
1973         [  --with-included-gettext use the GNU gettext library included here],
1974         nls_cv_force_use_gnu_gettext=$withval,
1975         nls_cv_force_use_gnu_gettext=no)
1976       AC_MSG_RESULT($nls_cv_force_use_gnu_gettext)
1977
1978       nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
1979       if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
1980         dnl User does not insist on using GNU NLS library.  Figure out what
1981         dnl to use.  If gettext or catgets are available (in this order) we
1982         dnl use this.  Else we have to fall back to GNU NLS library.
1983         dnl catgets is only used if permitted by option --with-catgets.
1984         nls_cv_header_intl=
1985         nls_cv_header_libgt=
1986         CATOBJEXT=NONE
1987
1988         AC_CHECK_HEADER(libintl.h,
1989           [AC_CACHE_CHECK([for gettext in libc], gt_cv_func_gettext_libc,
1990             [AC_TRY_LINK([#include <libintl.h>], [return (int) gettext ("")],
1991                gt_cv_func_gettext_libc=yes, gt_cv_func_gettext_libc=no)])
1992
1993            if test "$gt_cv_func_gettext_libc" != "yes"; then
1994              AC_CHECK_LIB(intl, bindtextdomain,
1995                [AC_CACHE_CHECK([for gettext in libintl],
1996                  gt_cv_func_gettext_libintl,
1997                  [AC_CHECK_LIB(intl, gettext,
1998                   gt_cv_func_gettext_libintl=yes,
1999                   gt_cv_func_gettext_libintl=no)],
2000                  gt_cv_func_gettext_libintl=no)])
2001            fi
2002
2003            if test "$gt_cv_func_gettext_libc" = "yes" \
2004               || test "$gt_cv_func_gettext_libintl" = "yes"; then
2005               AC_DEFINE(HAVE_GETTEXT)
2006               AM_PATH_PROG_WITH_TEST(MSGFMT, msgfmt,
2007                 [test -z "`$ac_dir/$ac_word -h 2>&1 | grep 'dv '`"], no)dnl
2008               if test "$MSGFMT" != "no"; then
2009                 AC_CHECK_FUNCS(dcgettext)
2010                 AC_PATH_PROG(GMSGFMT, gmsgfmt, $MSGFMT)
2011                 AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext,
2012                   [test -z "`$ac_dir/$ac_word -h 2>&1 | grep '(HELP)'`"], :)
2013                 AC_TRY_LINK(, [extern int _nl_msg_cat_cntr;
2014                                return _nl_msg_cat_cntr],
2015                   [CATOBJEXT=.gmo
2016                    DATADIRNAME=share],
2017                   [CATOBJEXT=.mo
2018                    DATADIRNAME=lib])
2019                 INSTOBJEXT=.mo
2020               fi
2021             fi
2022         ])
2023
2024         if test "$CATOBJEXT" = "NONE"; then
2025           AC_MSG_CHECKING([whether catgets can be used])
2026           AC_ARG_WITH(catgets,
2027             [  --with-catgets          use catgets functions if available],
2028             nls_cv_use_catgets=$withval, nls_cv_use_catgets=no)
2029           AC_MSG_RESULT($nls_cv_use_catgets)
2030
2031           if test "$nls_cv_use_catgets" = "yes"; then
2032             dnl No gettext in C library.  Try catgets next.
2033             AC_CHECK_LIB(i, main)
2034             AC_CHECK_FUNC(catgets,
2035               [AC_DEFINE(HAVE_CATGETS)
2036                INTLOBJS="\$(CATOBJS)"
2037                AC_PATH_PROG(GENCAT, gencat, no)dnl
2038                if test "$GENCAT" != "no"; then
2039                  AC_PATH_PROG(GMSGFMT, gmsgfmt, no)
2040                  if test "$GMSGFMT" = "no"; then
2041                    AM_PATH_PROG_WITH_TEST(GMSGFMT, msgfmt,
2042                     [test -z "`$ac_dir/$ac_word -h 2>&1 | grep 'dv '`"], no)
2043                  fi
2044                  AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext,
2045                    [test -z "`$ac_dir/$ac_word -h 2>&1 | grep '(HELP)'`"], :)
2046                  USE_INCLUDED_LIBINTL=yes
2047                  CATOBJEXT=.cat
2048                  INSTOBJEXT=.cat
2049                  DATADIRNAME=lib
2050                  INTLDEPS='$(top_builddir)/intl/libintl.a'
2051                  INTLLIBS=$INTLDEPS
2052                  LIBS=`echo $LIBS | sed -e 's/-lintl//'`
2053                  nls_cv_header_intl=intl/libintl.h
2054                  nls_cv_header_libgt=intl/libgettext.h
2055                fi])
2056           fi
2057         fi
2058
2059         if test "$CATOBJEXT" = "NONE"; then
2060           dnl Neither gettext nor catgets in included in the C library.
2061           dnl Fall back on GNU gettext library.
2062           nls_cv_use_gnu_gettext=yes
2063         fi
2064       fi
2065
2066       if test "$nls_cv_use_gnu_gettext" = "yes"; then
2067         dnl Mark actions used to generate GNU NLS library.
2068         INTLOBJS="\$(GETTOBJS)"
2069         AM_PATH_PROG_WITH_TEST(MSGFMT, msgfmt,
2070           [test -z "`$ac_dir/$ac_word -h 2>&1 | grep 'dv '`"], msgfmt)
2071         AC_PATH_PROG(GMSGFMT, gmsgfmt, $MSGFMT)
2072         AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext,
2073           [test -z "`$ac_dir/$ac_word -h 2>&1 | grep '(HELP)'`"], :)
2074         AC_SUBST(MSGFMT)
2075         USE_INCLUDED_LIBINTL=yes
2076         CATOBJEXT=.gmo
2077         INSTOBJEXT=.mo
2078         DATADIRNAME=share
2079         INTLDEPS='$(top_builddir)/intl/libintl.a'
2080         INTLLIBS=$INTLDEPS
2081         LIBS=`echo $LIBS | sed -e 's/-lintl//'`
2082         nls_cv_header_intl=intl/libintl.h
2083         nls_cv_header_libgt=intl/libgettext.h
2084       fi
2085
2086       dnl Test whether we really found GNU xgettext.
2087       if test "$XGETTEXT" != ":"; then
2088         dnl If it is no GNU xgettext we define it as : so that the
2089         dnl Makefiles still can work.
2090         if $XGETTEXT --omit-header /dev/null 2> /dev/null; then
2091           : ;
2092         else
2093           AC_MSG_RESULT(
2094             [found xgettext program is not GNU xgettext; ignore it])
2095           XGETTEXT=":"
2096         fi
2097       fi
2098
2099       # We need to process the po/ directory.
2100       POSUB=po
2101     else
2102       DATADIRNAME=share
2103       nls_cv_header_intl=intl/libintl.h
2104       nls_cv_header_libgt=intl/libgettext.h
2105     fi
2106     AC_LINK_FILES($nls_cv_header_libgt, $nls_cv_header_intl)
2107     AC_OUTPUT_COMMANDS(
2108      [case "$CONFIG_FILES" in *po/Makefile.in*)
2109         sed -e "/POTFILES =/r po/POTFILES" po/Makefile.in > po/Makefile
2110       esac])
2111
2112
2113     # If this is used in GNU gettext we have to set USE_NLS to `yes'
2114     # because some of the sources are only built for this goal.
2115     if test "$PACKAGE" = gettext; then
2116       USE_NLS=yes
2117       USE_INCLUDED_LIBINTL=yes
2118     fi
2119
2120     dnl These rules are solely for the distribution goal.  While doing this
2121     dnl we only have to keep exactly one list of the available catalogs
2122     dnl in configure.in.
2123     for lang in $ALL_LINGUAS; do
2124       GMOFILES="$GMOFILES $lang.gmo"
2125       POFILES="$POFILES $lang.po"
2126     done
2127
2128     dnl Make all variables we use known to autoconf.
2129     AC_SUBST(USE_INCLUDED_LIBINTL)
2130     AC_SUBST(CATALOGS)
2131     AC_SUBST(CATOBJEXT)
2132     AC_SUBST(DATADIRNAME)
2133     AC_SUBST(GMOFILES)
2134     AC_SUBST(INSTOBJEXT)
2135     AC_SUBST(INTLDEPS)
2136     AC_SUBST(INTLLIBS)
2137     AC_SUBST(INTLOBJS)
2138     AC_SUBST(POFILES)
2139     AC_SUBST(POSUB)
2140   ])
2141
2142 AC_DEFUN(AM_GNU_GETTEXT,
2143   [AC_REQUIRE([AC_PROG_MAKE_SET])dnl
2144    AC_REQUIRE([AC_PROG_CC])dnl
2145    AC_REQUIRE([AC_PROG_RANLIB])dnl
2146    AC_REQUIRE([AC_ISC_POSIX])dnl
2147    AC_REQUIRE([AC_HEADER_STDC])dnl
2148    AC_REQUIRE([AC_C_CONST])dnl
2149    AC_REQUIRE([AC_C_INLINE])dnl
2150    AC_REQUIRE([AC_TYPE_OFF_T])dnl
2151    AC_REQUIRE([AC_TYPE_SIZE_T])dnl
2152    AC_REQUIRE([AC_FUNC_ALLOCA])dnl
2153    AC_REQUIRE([AC_FUNC_MMAP])dnl
2154
2155    AC_CHECK_HEADERS([argz.h limits.h locale.h nl_types.h malloc.h string.h \
2156 unistd.h sys/param.h])
2157    AC_CHECK_FUNCS([getcwd munmap putenv setenv setlocale strchr strcasecmp \
2158 strdup __argz_count __argz_stringify __argz_next])
2159
2160    if test "${ac_cv_func_stpcpy+set}" != "set"; then
2161      AC_CHECK_FUNCS(stpcpy)
2162    fi
2163    if test "${ac_cv_func_stpcpy}" = "yes"; then
2164      AC_DEFINE(HAVE_STPCPY)
2165    fi
2166
2167    AM_LC_MESSAGES
2168    AM_WITH_NLS
2169
2170    if test "x$CATOBJEXT" != "x"; then
2171      if test "x$ALL_LINGUAS" = "x"; then
2172        LINGUAS=
2173      else
2174        AC_MSG_CHECKING(for catalogs to be installed)
2175        NEW_LINGUAS=
2176        for lang in ${LINGUAS=$ALL_LINGUAS}; do
2177          case "$ALL_LINGUAS" in
2178           *$lang*) NEW_LINGUAS="$NEW_LINGUAS $lang" ;;
2179          esac
2180        done
2181        LINGUAS=$NEW_LINGUAS
2182        AC_MSG_RESULT($LINGUAS)
2183      fi
2184
2185      dnl Construct list of names of catalog files to be constructed.
2186      if test -n "$LINGUAS"; then
2187        for lang in $LINGUAS; do CATALOGS="$CATALOGS $lang$CATOBJEXT"; done
2188      fi
2189    fi
2190
2191    dnl The reference to <locale.h> in the installed <libintl.h> file
2192    dnl must be resolved because we cannot expect the users of this
2193    dnl to define HAVE_LOCALE_H.
2194    if test $ac_cv_header_locale_h = yes; then
2195      INCLUDE_LOCALE_H="#include <locale.h>"
2196    else
2197      INCLUDE_LOCALE_H="\
2198 /* The system does not provide the header <locale.h>.  Take care yourself.  */"
2199    fi
2200    AC_SUBST(INCLUDE_LOCALE_H)
2201
2202    dnl Determine which catalog format we have (if any is needed)
2203    dnl For now we know about two different formats:
2204    dnl   Linux libc-5 and the normal X/Open format
2205    test -d intl || mkdir intl
2206    if test "$CATOBJEXT" = ".cat"; then
2207      AC_CHECK_HEADER(linux/version.h, msgformat=linux, msgformat=xopen)
2208
2209      dnl Transform the SED scripts while copying because some dumb SEDs
2210      dnl cannot handle comments.
2211      sed -e '/^#/d' $srcdir/intl/$msgformat-msg.sed > intl/po2msg.sed
2212    fi
2213    dnl po2tbl.sed is always needed.
2214    sed -e '/^#.*[^\\]$/d' -e '/^#$/d' \
2215      $srcdir/intl/po2tbl.sed.in > intl/po2tbl.sed
2216
2217    dnl In the intl/Makefile.in we have a special dependency which makes
2218    dnl only sense for gettext.  We comment this out for non-gettext
2219    dnl packages.
2220    if test "$PACKAGE" = "gettext"; then
2221      GT_NO="#NO#"
2222      GT_YES=
2223    else
2224      GT_NO=
2225      GT_YES="#YES#"
2226    fi
2227    AC_SUBST(GT_NO)
2228    AC_SUBST(GT_YES)
2229
2230    dnl If the AC_CONFIG_AUX_DIR macro for autoconf is used we possibly
2231    dnl find the mkinstalldirs script in another subdir but ($top_srcdir).
2232    dnl Try to locate is.
2233    MKINSTALLDIRS=
2234    if test -n "$ac_aux_dir"; then
2235      MKINSTALLDIRS="$ac_aux_dir/mkinstalldirs"
2236    fi
2237    if test -z "$MKINSTALLDIRS"; then
2238      MKINSTALLDIRS="\$(top_srcdir)/mkinstalldirs"
2239    fi
2240    AC_SUBST(MKINSTALLDIRS)
2241
2242    dnl *** For now the libtool support in intl/Makefile is not for real.
2243    l=
2244    AC_SUBST(l)
2245
2246    dnl Generate list of files to be processed by xgettext which will
2247    dnl be included in po/Makefile.
2248    test -d po || mkdir po
2249    if test "x$srcdir" != "x."; then
2250      if test "x`echo $srcdir | sed 's@/.*@@'`" = "x"; then
2251        posrcprefix="$srcdir/"
2252      else
2253        posrcprefix="../$srcdir/"
2254      fi
2255    else
2256      posrcprefix="../"
2257    fi
2258    rm -f po/POTFILES
2259    sed -e "/^#/d" -e "/^\$/d" -e "s,.*, $posrcprefix& \\\\," -e "\$s/\(.*\) \\\\/\1/" \
2260         < $srcdir/po/POTFILES.in > po/POTFILES
2261   ])
2262
2263 # Search path for a program which passes the given test.
2264 # Ulrich Drepper <drepper@cygnus.com>, 1996.
2265 #
2266 # This file can be copied and used freely without restrictions.  It can
2267 # be used in projects which are not available under the GNU Public License
2268 # but which still want to provide support for the GNU gettext functionality.
2269 # Please note that the actual code is *not* freely available.
2270
2271 # serial 1
2272
2273 dnl AM_PATH_PROG_WITH_TEST(VARIABLE, PROG-TO-CHECK-FOR,
2274 dnl   TEST-PERFORMED-ON-FOUND_PROGRAM [, VALUE-IF-NOT-FOUND [, PATH]])
2275 AC_DEFUN(AM_PATH_PROG_WITH_TEST,
2276 [# Extract the first word of "$2", so it can be a program name with args.
2277 set dummy $2; ac_word=[$]2
2278 AC_MSG_CHECKING([for $ac_word])
2279 AC_CACHE_VAL(ac_cv_path_$1,
2280 [case "[$]$1" in
2281   /*)
2282   ac_cv_path_$1="[$]$1" # Let the user override the test with a path.
2283   ;;
2284   *)
2285   IFS="${IFS=   }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
2286   for ac_dir in ifelse([$5], , $PATH, [$5]); do
2287     test -z "$ac_dir" && ac_dir=.
2288     if test -f $ac_dir/$ac_word; then
2289       if [$3]; then
2290         ac_cv_path_$1="$ac_dir/$ac_word"
2291         break
2292       fi
2293     fi
2294   done
2295   IFS="$ac_save_ifs"
2296 dnl If no 4th arg is given, leave the cache variable unset,
2297 dnl so AC_PATH_PROGS will keep looking.
2298 ifelse([$4], , , [  test -z "[$]ac_cv_path_$1" && ac_cv_path_$1="$4"
2299 ])dnl
2300   ;;
2301 esac])dnl
2302 $1="$ac_cv_path_$1"
2303 if test -n "[$]$1"; then
2304   AC_MSG_RESULT([$]$1)
2305 else
2306   AC_MSG_RESULT(no)
2307 fi
2308 AC_SUBST($1)dnl
2309 ])
2310
2311 # Check whether LC_MESSAGES is available in <locale.h>.
2312 # Ulrich Drepper <drepper@cygnus.com>, 1995.
2313 #
2314 # This file can be copied and used freely without restrictions.  It can
2315 # be used in projects which are not available under the GNU Public License
2316 # but which still want to provide support for the GNU gettext functionality.
2317 # Please note that the actual code is *not* freely available.
2318
2319 # serial 1
2320
2321 AC_DEFUN(AM_LC_MESSAGES,
2322   [if test $ac_cv_header_locale_h = yes; then
2323     AC_CACHE_CHECK([for LC_MESSAGES], am_cv_val_LC_MESSAGES,
2324       [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
2325        am_cv_val_LC_MESSAGES=yes, am_cv_val_LC_MESSAGES=no)])
2326     if test $am_cv_val_LC_MESSAGES = yes; then
2327       AC_DEFINE(HAVE_LC_MESSAGES)
2328     fi
2329   fi])
2330
2331 # Do all the work for Automake.  This macro actually does too much --
2332 # some checks are only needed if your package does certain things.
2333 # But this isn't really a big deal.
2334
2335 # serial 1
2336
2337 dnl Usage:
2338 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
2339
2340 AC_DEFUN(AM_INIT_AUTOMAKE,
2341 [AC_REQUIRE([AC_PROG_INSTALL])
2342 PACKAGE=[$1]
2343 AC_SUBST(PACKAGE)
2344 VERSION=[$2]
2345 AC_SUBST(VERSION)
2346 dnl test to see if srcdir already configured
2347 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
2348   AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
2349 fi
2350 ifelse([$3],,
2351 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
2352 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
2353 AC_REQUIRE([AM_SANITY_CHECK])
2354 AC_REQUIRE([AC_ARG_PROGRAM])
2355 dnl FIXME This is truly gross.
2356 missing_dir=`cd $ac_aux_dir && pwd`
2357 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
2358 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
2359 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
2360 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
2361 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
2362 AC_REQUIRE([AC_PROG_MAKE_SET])])
2363
2364 #
2365 # Check to make sure that the build environment is sane.
2366 #
2367
2368 AC_DEFUN(AM_SANITY_CHECK,
2369 [AC_MSG_CHECKING([whether build environment is sane])
2370 # Just in case
2371 sleep 1
2372 echo timestamp > conftestfile
2373 # Do `set' in a subshell so we don't clobber the current shell's
2374 # arguments.  Must try -L first in case configure is actually a
2375 # symlink; some systems play weird games with the mod time of symlinks
2376 # (eg FreeBSD returns the mod time of the symlink's containing
2377 # directory).
2378 if (
2379    set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
2380    if test "[$]*" = "X"; then
2381       # -L didn't work.
2382       set X `ls -t $srcdir/configure conftestfile`
2383    fi
2384    if test "[$]*" != "X $srcdir/configure conftestfile" \
2385       && test "[$]*" != "X conftestfile $srcdir/configure"; then
2386
2387       # If neither matched, then we have a broken ls.  This can happen
2388       # if, for instance, CONFIG_SHELL is bash and it inherits a
2389       # broken ls alias from the environment.  This has actually
2390       # happened.  Such a system could not be considered "sane".
2391       AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
2392 alias in your environment])
2393    fi
2394
2395    test "[$]2" = conftestfile
2396    )
2397 then
2398    # Ok.
2399    :
2400 else
2401    AC_MSG_ERROR([newly created file is older than distributed files!
2402 Check your system clock])
2403 fi
2404 rm -f conftest*
2405 AC_MSG_RESULT(yes)])
2406
2407 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
2408 dnl The program must properly implement --version.
2409 AC_DEFUN(AM_MISSING_PROG,
2410 [AC_MSG_CHECKING(for working $2)
2411 # Run test in a subshell; some versions of sh will print an error if
2412 # an executable is not found, even if stderr is redirected.
2413 # Redirect stdin to placate older versions of autoconf.  Sigh.
2414 if ($2 --version) < /dev/null > /dev/null 2>&1; then
2415    $1=$2
2416    AC_MSG_RESULT(found)
2417 else
2418    $1="$3/missing $2"
2419    AC_MSG_RESULT(missing)
2420 fi
2421 AC_SUBST($1)])
2422
2423 # Like AC_CONFIG_HEADER, but automatically create stamp file.
2424
2425 AC_DEFUN(AM_CONFIG_HEADER,
2426 [AC_PREREQ([2.12])
2427 AC_CONFIG_HEADER([$1])
2428 dnl When config.status generates a header, we must update the stamp-h file.
2429 dnl This file resides in the same directory as the config header
2430 dnl that is generated.  We must strip everything past the first ":",
2431 dnl and everything past the last "/".
2432 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
2433 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
2434 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
2435 <<am_indx=1
2436 for am_file in <<$1>>; do
2437   case " <<$>>CONFIG_HEADERS " in
2438   *" <<$>>am_file "*<<)>>
2439     echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
2440     ;;
2441   esac
2442   am_indx=`expr "<<$>>am_indx" + 1`
2443 done<<>>dnl>>)
2444 changequote([,]))])
2445