gcc/aclocal.m4

   1 sinclude(../config/acx.m4)
   2 sinclude(../config/accross.m4)
   3 sinclude(../config/gettext.m4)
   4 sinclude(../config/progtest.m4)
   5
   6 dnl See if stdbool.h properly defines bool and true/false.
   7 AC_DEFUN([gcc_AC_HEADER_STDBOOL],
   8 [AC_CACHE_CHECK([for working stdbool.h],
   9   ac_cv_header_stdbool_h,
  10 [AC_TRY_COMPILE([#include <stdbool.h>],
  11 [bool foo = false;],
  12 ac_cv_header_stdbool_h=yes, ac_cv_header_stdbool_h=no)])
  13 if test $ac_cv_header_stdbool_h = yes; then
  14   AC_DEFINE(HAVE_STDBOOL_H, 1,
  15   [Define if you have a working <stdbool.h> header file.])
  16 fi
  17 ])
  18
  19 dnl See whether we can include both string.h and strings.h.
  20 AC_DEFUN([gcc_AC_HEADER_STRING],
  21 [AC_CACHE_CHECK([whether string.h and strings.h may both be included],
  22   gcc_cv_header_string,
  23 [AC_TRY_COMPILE([#include <string.h>
  24 #include <strings.h>], , gcc_cv_header_string=yes, gcc_cv_header_string=no)])
  25 if test $gcc_cv_header_string = yes; then
  26   AC_DEFINE(STRING_WITH_STRINGS, 1, [Define if you can safely include both <string.h> and <strings.h>.])
  27 fi
  28 ])
  29
  30 dnl See whether we need a declaration for a function.
  31 dnl The result is highly dependent on the INCLUDES passed in, so make sure
  32 dnl to use a different cache variable name in this macro if it is invoked
  33 dnl in a different context somewhere else.
  34 dnl gcc_AC_CHECK_DECL(SYMBOL,
  35 dnl     [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND [, INCLUDES]]])
  36 AC_DEFUN([gcc_AC_CHECK_DECL],
  37 [AC_MSG_CHECKING([whether $1 is declared])
  38 AC_CACHE_VAL(gcc_cv_have_decl_$1,
  39 [AC_TRY_COMPILE([$4],
  40 [#ifndef $1
  41 char *(*pfn) = (char *(*)) $1 ;
  42 #endif], eval "gcc_cv_have_decl_$1=yes", eval "gcc_cv_have_decl_$1=no")])
  43 if eval "test \"`echo '$gcc_cv_have_decl_'$1`\" = yes"; then
  44   AC_MSG_RESULT(yes) ; ifelse([$2], , :, [$2])
  45 else
  46   AC_MSG_RESULT(no) ; ifelse([$3], , :, [$3])
  47 fi
  48 ])dnl
  49
  50 dnl Check multiple functions to see whether each needs a declaration.
  51 dnl Arrange to define HAVE_DECL_<FUNCTION> to 0 or 1 as appropriate.
  52 dnl gcc_AC_CHECK_DECLS(SYMBOLS,
  53 dnl     [ACTION-IF-NEEDED [, ACTION-IF-NOT-NEEDED [, INCLUDES]]])
  54 AC_DEFUN([gcc_AC_CHECK_DECLS],
  55 [for ac_func in $1
  56 do
  57 changequote(, )dnl
  58   ac_tr_decl=HAVE_DECL_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
  59 changequote([, ])dnl
  60 gcc_AC_CHECK_DECL($ac_func,
  61   [AC_DEFINE_UNQUOTED($ac_tr_decl, 1) $2],
  62   [AC_DEFINE_UNQUOTED($ac_tr_decl, 0) $3],
  63 dnl It is possible that the include files passed in here are local headers
  64 dnl which supply a backup declaration for the relevant prototype based on
  65 dnl the definition of (or lack of) the HAVE_DECL_ macro.  If so, this test
  66 dnl will always return success.  E.g. see libiberty.h's handling of
  67 dnl `basename'.  To avoid this, we define the relevant HAVE_DECL_ macro to
  68 dnl 1 so that any local headers used do not provide their own prototype
  69 dnl during this test.
  70 #undef $ac_tr_decl
  71 #define $ac_tr_decl 1
  72   $4
  73 )
  74 done
  75 dnl Automatically generate config.h entries via autoheader.
  76 if test x = y ; then
  77   patsubst(translit([$1], [a-z], [A-Z]), [\w+],
  78     [AC_DEFINE([HAVE_DECL_\&], 1,
  79       [Define to 1 if we found this declaration otherwise define to 0.])])dnl
  80 fi
  81 ])
  82
  83 dnl 'make compare' can be significantly faster, if cmp itself can
  84 dnl skip bytes instead of using tail.  The test being performed is
  85 dnl "if cmp --ignore-initial=2 t1 t2 && ! cmp --ignore-initial=1 t1 t2"
  86 dnl but we need to sink errors and handle broken shells.  We also test
  87 dnl for the parameter format "cmp file1 file2 skip1 skip2" which is
  88 dnl accepted by cmp on some systems.
  89 AC_DEFUN([gcc_AC_PROG_CMP_IGNORE_INITIAL],
  90 [AC_CACHE_CHECK([for cmp's capabilities], gcc_cv_prog_cmp_skip,
  91 [ echo abfoo >t1
  92   echo cdfoo >t2
  93   gcc_cv_prog_cmp_skip=slowcompare
  94   if cmp --ignore-initial=2 t1 t2 > /dev/null 2>&1; then
  95     if cmp --ignore-initial=1 t1 t2 > /dev/null 2>&1; then
  96       :
  97     else
  98       gcc_cv_prog_cmp_skip=gnucompare
  99     fi
 100   fi
 101   if test $gcc_cv_prog_cmp_skip = slowcompare ; then
 102     if cmp t1 t2 2 2 > /dev/null 2>&1; then
 103       if cmp t1 t2 1 1 > /dev/null 2>&1; then
 104         :
 105       else
 106         gcc_cv_prog_cmp_skip=fastcompare
 107       fi
 108     fi
 109   fi
 110   rm t1 t2
 111 ])
 112 make_compare_target=$gcc_cv_prog_cmp_skip
 113 AC_SUBST(make_compare_target)
 114 ])
 115
 116 dnl See if the printf functions in libc support %p in format strings.
 117 AC_DEFUN([gcc_AC_FUNC_PRINTF_PTR],
 118 [AC_CACHE_CHECK(whether the printf functions support %p,
 119   gcc_cv_func_printf_ptr,
 120 [AC_TRY_RUN([#include <stdio.h>
 121
 122 int main()
 123 {
 124   char buf[64];
 125   char *p = buf, *q = NULL;
 126   sprintf(buf, "%p", p);
 127   sscanf(buf, "%p", &q);
 128   return (p != q);
 129 }], gcc_cv_func_printf_ptr=yes, gcc_cv_func_printf_ptr=no,
 130         gcc_cv_func_printf_ptr=no)
 131 rm -f core core.* *.core])
 132 if test $gcc_cv_func_printf_ptr = yes ; then
 133   AC_DEFINE(HAVE_PRINTF_PTR, 1, [Define if printf supports "%p".])
 134 fi
 135 ])
 136
 137 dnl See if symbolic links work and if not, try to substitute either hard links or simple copy.
 138 AC_DEFUN([gcc_AC_PROG_LN_S],
 139 [AC_MSG_CHECKING(whether ln -s works)
 140 AC_CACHE_VAL(gcc_cv_prog_LN_S,
 141 [rm -f conftestdata_t
 142 echo >conftestdata_f
 143 if ln -s conftestdata_f conftestdata_t 2>/dev/null
 144 then
 145   gcc_cv_prog_LN_S="ln -s"
 146 else
 147   if ln conftestdata_f conftestdata_t 2>/dev/null
 148   then
 149     gcc_cv_prog_LN_S=ln
 150   else
 151     gcc_cv_prog_LN_S=cp
 152   fi
 153 fi
 154 rm -f conftestdata_f conftestdata_t
 155 ])dnl
 156 LN_S="$gcc_cv_prog_LN_S"
 157 if test "$gcc_cv_prog_LN_S" = "ln -s"; then
 158   AC_MSG_RESULT(yes)
 159 else
 160   if test "$gcc_cv_prog_LN_S" = "ln"; then
 161     AC_MSG_RESULT([no, using ln])
 162   else
 163     AC_MSG_RESULT([no, and neither does ln, so using cp])
 164   fi
 165 fi
 166 AC_SUBST(LN_S)dnl
 167 ])
 168
 169 dnl See if hard links work and if not, try to substitute either symbolic links or simple copy.
 170 AC_DEFUN([gcc_AC_PROG_LN],
 171 [AC_MSG_CHECKING(whether ln works)
 172 AC_CACHE_VAL(gcc_cv_prog_LN,
 173 [rm -f conftestdata_t
 174 echo >conftestdata_f
 175 if ln conftestdata_f conftestdata_t 2>/dev/null
 176 then
 177   gcc_cv_prog_LN="ln"
 178 else
 179   if ln -s conftestdata_f conftestdata_t 2>/dev/null
 180   then
 181     gcc_cv_prog_LN="ln -s"
 182   else
 183     gcc_cv_prog_LN=cp
 184   fi
 185 fi
 186 rm -f conftestdata_f conftestdata_t
 187 ])dnl
 188 LN="$gcc_cv_prog_LN"
 189 if test "$gcc_cv_prog_LN" = "ln"; then
 190   AC_MSG_RESULT(yes)
 191 else
 192   if test "$gcc_cv_prog_LN" = "ln -s"; then
 193     AC_MSG_RESULT([no, using ln -s])
 194   else
 195     AC_MSG_RESULT([no, and neither does ln -s, so using cp])
 196   fi
 197 fi
 198 AC_SUBST(LN)dnl
 199 ])
 200
 201 dnl Check whether _Bool is built-in.
 202 AC_DEFUN([gcc_AC_C__BOOL],
 203 [AC_CACHE_CHECK(for built-in _Bool, gcc_cv_c__bool,
 204 [AC_TRY_COMPILE(,
 205 [_Bool foo;],
 206 gcc_cv_c__bool=yes, gcc_cv_c__bool=no)
 207 ])
 208 if test $gcc_cv_c__bool = yes; then
 209   AC_DEFINE(HAVE__BOOL, 1, [Define if the \`_Bool' type is built-in.])
 210 fi
 211 ])
 212
 213 dnl Define MKDIR_TAKES_ONE_ARG if mkdir accepts only one argument instead
 214 dnl of the usual 2.
 215 AC_DEFUN([gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG],
 216 [AC_CACHE_CHECK([if mkdir takes one argument], gcc_cv_mkdir_takes_one_arg,
 217 [AC_TRY_COMPILE([
 218 #include <sys/types.h>
 219 #ifdef HAVE_SYS_STAT_H
 220 # include <sys/stat.h>
 221 #endif
 222 #ifdef HAVE_UNISTD_H
 223 # include <unistd.h>
 224 #endif
 225 #ifdef HAVE_DIRECT_H
 226 # include <direct.h>
 227 #endif], [mkdir ("foo", 0);],
 228         gcc_cv_mkdir_takes_one_arg=no, gcc_cv_mkdir_takes_one_arg=yes)])
 229 if test $gcc_cv_mkdir_takes_one_arg = yes ; then
 230   AC_DEFINE(MKDIR_TAKES_ONE_ARG, 1, [Define if host mkdir takes a single argument.])
 231 fi
 232 ])
 233
 234 AC_DEFUN([gcc_AC_PROG_INSTALL],
 235 [AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
 236 # Find a good install program.  We prefer a C program (faster),
 237 # so one script is as good as another.  But avoid the broken or
 238 # incompatible versions:
 239 # SysV /etc/install, /usr/sbin/install
 240 # SunOS /usr/etc/install
 241 # IRIX /sbin/install
 242 # AIX /bin/install
 243 # AFS /usr/afsws/bin/install, which mishandles nonexistent args
 244 # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
 245 # ./install, which can be erroneously created by make from ./install.sh.
 246 AC_MSG_CHECKING(for a BSD compatible install)
 247 if test -z "$INSTALL"; then
 248 AC_CACHE_VAL(ac_cv_path_install,
 249 [  IFS="${IFS=  }"; ac_save_IFS="$IFS"; IFS="${IFS}:"
 250   for ac_dir in $PATH; do
 251     # Account for people who put trailing slashes in PATH elements.
 252     case "$ac_dir/" in
 253     /|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;;
 254     *)
 255       # OSF1 and SCO ODT 3.0 have their own names for install.
 256       for ac_prog in ginstall scoinst install; do
 257         if test -f $ac_dir/$ac_prog; then
 258           if test $ac_prog = install &&
 259             grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then
 260             # AIX install.  It has an incompatible calling convention.
 261             # OSF/1 installbsd also uses dspmsg, but is usable.
 262             :
 263           else
 264             ac_cv_path_install="$ac_dir/$ac_prog -c"
 265             break 2
 266           fi
 267         fi
 268       done
 269       ;;
 270     esac
 271   done
 272   IFS="$ac_save_IFS"
 273 ])dnl
 274   if test "${ac_cv_path_install+set}" = set; then
 275     INSTALL="$ac_cv_path_install"
 276   else
 277     # As a last resort, use the slow shell script.  We don't cache a
 278     # path for INSTALL within a source directory, because that will
 279     # break other packages using the cache if that directory is
 280     # removed, or if the path is relative.
 281     INSTALL="$ac_install_sh"
 282   fi
 283 fi
 284 dnl We do special magic for INSTALL instead of AC_SUBST, to get
 285 dnl relative paths right.
 286 AC_MSG_RESULT($INSTALL)
 287 AC_SUBST(INSTALL)dnl
 288
 289 # Use test -z because SunOS4 sh mishandles braces in ${var-val}.
 290 # It thinks the first close brace ends the variable substitution.
 291 test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
 292 AC_SUBST(INSTALL_PROGRAM)dnl
 293
 294 test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
 295 AC_SUBST(INSTALL_DATA)dnl
 296 ])
 297
 298 dnl GCC_PATH_PROG(VARIABLE, PROG-TO-CHECK-FOR [, VALUE-IF-NOT-FOUND [, PATH]])
 299 dnl like AC_PATH_PROG but use other cache variables
 300 AC_DEFUN([GCC_PATH_PROG],
 301 [# Extract the first word of "$2", so it can be a program name with args.
 302 set dummy $2; ac_word=[$]2
 303 AC_MSG_CHECKING([for $ac_word])
 304 AC_CACHE_VAL(gcc_cv_path_$1,
 305 [case "[$]$1" in
 306   /*)
 307   gcc_cv_path_$1="[$]$1" # Let the user override the test with a path.
 308   ;;
 309   ?:/*)
 310   gcc_cv_path_$1="[$]$1" # Let the user override the test with a dos path.
 311   ;;
 312   *)
 313   IFS="${IFS=   }"; ac_save_ifs="$IFS"; IFS=":"
 314 dnl $ac_dummy forces splitting on constant user-supplied paths.
 315 dnl POSIX.2 word splitting is done only on the output of word expansions,
 316 dnl not every word.  This closes a longstanding sh security hole.
 317   ac_dummy="ifelse([$4], , $PATH, [$4])"
 318   for ac_dir in $ac_dummy; do
 319     test -z "$ac_dir" && ac_dir=.
 320     if test -f $ac_dir/$ac_word; then
 321       gcc_cv_path_$1="$ac_dir/$ac_word"
 322       break
 323     fi
 324   done
 325   IFS="$ac_save_ifs"
 326 dnl If no 3rd arg is given, leave the cache variable unset,
 327 dnl so GCC_PATH_PROGS will keep looking.
 328 ifelse([$3], , , [  test -z "[$]gcc_cv_path_$1" && gcc_cv_path_$1="$3"
 329 ])dnl
 330   ;;
 331 esac])dnl
 332 $1="$gcc_cv_path_$1"
 333 if test -n "[$]$1"; then
 334   AC_MSG_RESULT([$]$1)
 335 else
 336   AC_MSG_RESULT(no)
 337 fi
 338 AC_SUBST($1)dnl
 339 ])
 340
 341 # mmap(2) blacklisting.  Some platforms provide the mmap library routine
 342 # but don't support all of the features we need from it.
 343 AC_DEFUN([gcc_AC_FUNC_MMAP_BLACKLIST],
 344 [if test $ac_cv_header_sys_mman_h != yes \
 345  || test $ac_cv_func_mmap != yes; then
 346    gcc_cv_func_mmap_file=no
 347    gcc_cv_func_mmap_dev_zero=no
 348    gcc_cv_func_mmap_anon=no
 349 else
 350    AC_CACHE_CHECK([whether read-only mmap of a plain file works],
 351   gcc_cv_func_mmap_file,
 352   [# Add a system to this blacklist if
 353    # mmap(0, stat_size, PROT_READ, MAP_PRIVATE, fd, 0) doesn't return a
 354    # memory area containing the same data that you'd get if you applied
 355    # read() to the same fd.  The only system known to have a problem here
 356    # is VMS, where text files have record structure.
 357    case "$host_os" in
 358      vms* | ultrix*)
 359         gcc_cv_func_mmap_file=no ;;
 360      *)
 361         gcc_cv_func_mmap_file=yes;;
 362    esac])
 363    AC_CACHE_CHECK([whether mmap from /dev/zero works],
 364   gcc_cv_func_mmap_dev_zero,
 365   [# Add a system to this blacklist if it has mmap() but /dev/zero
 366    # does not exist, or if mmapping /dev/zero does not give anonymous
 367    # zeroed pages with both the following properties:
 368    # 1. If you map N consecutive pages in with one call, and then
 369    #    unmap any subset of those pages, the pages that were not
 370    #    explicitly unmapped remain accessible.
 371    # 2. If you map two adjacent blocks of memory and then unmap them
 372    #    both at once, they must both go away.
 373    # Systems known to be in this category are Windows (all variants),
 374    # VMS, and Darwin.
 375    case "$host_os" in
 376      vms* | cygwin* | pe | mingw* | darwin* | ultrix* | hpux10* | hpux11.00)
 377         gcc_cv_func_mmap_dev_zero=no ;;
 378      *)
 379         gcc_cv_func_mmap_dev_zero=yes;;
 380    esac])
 381
 382    # Unlike /dev/zero, the MAP_ANON(YMOUS) defines can be probed for.
 383    AC_CACHE_CHECK([for MAP_ANON(YMOUS)], gcc_cv_decl_map_anon,
 384     [AC_TRY_COMPILE(
 385 [#include <sys/types.h>
 386 #include <sys/mman.h>
 387 #include <unistd.h>
 388
 389 #ifndef MAP_ANONYMOUS
 390 #define MAP_ANONYMOUS MAP_ANON
 391 #endif
 392 ],
 393 [int n = MAP_ANONYMOUS;],
 394     gcc_cv_decl_map_anon=yes,
 395     gcc_cv_decl_map_anon=no)])
 396
 397    if test $gcc_cv_decl_map_anon = no; then
 398      gcc_cv_func_mmap_anon=no
 399    else
 400      AC_CACHE_CHECK([whether mmap with MAP_ANON(YMOUS) works],
 401      gcc_cv_func_mmap_anon,
 402   [# Add a system to this blacklist if it has mmap() and MAP_ANON or
 403    # MAP_ANONYMOUS, but using mmap(..., MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
 404    # doesn't give anonymous zeroed pages with the same properties listed
 405    # above for use of /dev/zero.
 406    # Systems known to be in this category are Windows, VMS, and SCO Unix.
 407    case "$host_os" in
 408      vms* | cygwin* | pe | mingw* | sco* | udk* )
 409         gcc_cv_func_mmap_anon=no ;;
 410      *)
 411         gcc_cv_func_mmap_anon=yes;;
 412    esac])
 413    fi
 414 fi
 415
 416 if test $gcc_cv_func_mmap_file = yes; then
 417   AC_DEFINE(HAVE_MMAP_FILE, 1,
 418             [Define if read-only mmap of a plain file works.])
 419 fi
 420 if test $gcc_cv_func_mmap_dev_zero = yes; then
 421   AC_DEFINE(HAVE_MMAP_DEV_ZERO, 1,
 422             [Define if mmap of /dev/zero works.])
 423 fi
 424 if test $gcc_cv_func_mmap_anon = yes; then
 425   AC_DEFINE(HAVE_MMAP_ANON, 1,
 426             [Define if mmap with MAP_ANON(YMOUS) works.])
 427 fi
 428 ])
 429
 430 dnl Locate a program and check that its version is acceptable.
 431 dnl AC_PROG_CHECK_VER(var, name, version-switch,
 432 dnl                  version-extract-regexp, version-glob)
 433 AC_DEFUN([gcc_AC_CHECK_PROG_VER],
 434 [AC_CHECK_PROG([$1], [$2], [$2])
 435 if test -n "[$]$1"; then
 436   # Found it, now check the version.
 437   AC_CACHE_CHECK(for modern $2, gcc_cv_prog_$2_modern,
 438 [changequote(<<,>>)dnl
 439   ac_prog_version=`<<$>>$1 $3 2>&1 |
 440                    sed -n 's/^.*patsubst(<<$4>>,/,\/).*$/\1/p'`
 441 changequote([,])dnl
 442   echo "configure:__oline__: version of $2 is $ac_prog_version" >&AC_FD_CC
 443 changequote(<<,>>)dnl
 444   case $ac_prog_version in
 445     '')     gcc_cv_prog_$2_modern=no;;
 446     <<$5>>)
 447             gcc_cv_prog_$2_modern=yes;;
 448     *)      gcc_cv_prog_$2_modern=no;;
 449   esac
 450 changequote([,])dnl
 451 ])
 452 else
 453   gcc_cv_prog_$2_modern=no
 454 fi
 455 ])
 456
 457 dnl Determine if enumerated bitfields are unsigned.   ISO C says they can
 458 dnl be either signed or unsigned.
 459 dnl
 460 AC_DEFUN([gcc_AC_C_ENUM_BF_UNSIGNED],
 461 [AC_CACHE_CHECK(for unsigned enumerated bitfields, gcc_cv_enum_bf_unsigned,
 462 [AC_TRY_RUN(#include <stdlib.h>
 463 enum t { BLAH = 128 } ;
 464 struct s_t { enum t member : 8; } s ;
 465 int main(void)
 466 {
 467         s.member = BLAH;
 468         if (s.member < 0) exit(1);
 469         exit(0);
 470
 471 }, gcc_cv_enum_bf_unsigned=yes, gcc_cv_enum_bf_unsigned=no, gcc_cv_enum_bf_unsigned=yes)])
 472 if test $gcc_cv_enum_bf_unsigned = yes; then
 473   AC_DEFINE(ENUM_BITFIELDS_ARE_UNSIGNED, 1,
 474     [Define if enumerated bitfields are treated as unsigned values.])
 475 fi])
 476
 477 dnl Probe number of bits in a byte.
 478 dnl Note C89 requires CHAR_BIT >= 8.
 479 dnl
 480 AC_DEFUN([gcc_AC_C_CHAR_BIT],
 481 [AC_CACHE_CHECK(for CHAR_BIT, gcc_cv_decl_char_bit,
 482 [AC_EGREP_CPP(found,
 483 [#ifdef HAVE_LIMITS_H
 484 #include <limits.h>
 485 #endif
 486 #ifdef CHAR_BIT
 487 found
 488 #endif], gcc_cv_decl_char_bit=yes, gcc_cv_decl_char_bit=no)
 489 ])
 490 if test $gcc_cv_decl_char_bit = no; then
 491   AC_CACHE_CHECK(number of bits in a byte, gcc_cv_c_nbby,
 492 [i=8
 493  gcc_cv_c_nbby=
 494  while test $i -lt 65; do
 495    AC_TRY_COMPILE(,
 496      [switch(0) {
 497   case (unsigned char)((unsigned long)1 << $i) == ((unsigned long)1 << $i):
 498   case (unsigned char)((unsigned long)1<<($i-1)) == ((unsigned long)1<<($i-1)):
 499   ; }],
 500      [gcc_cv_c_nbby=$i; break])
 501    i=`expr $i + 1`
 502  done
 503  test -z "$gcc_cv_c_nbby" && gcc_cv_c_nbby=failed
 504 ])
 505 if test $gcc_cv_c_nbby = failed; then
 506   AC_MSG_ERROR(cannot determine number of bits in a byte)
 507 else
 508   AC_DEFINE_UNQUOTED(CHAR_BIT, $gcc_cv_c_nbby,
 509   [Define as the number of bits in a byte, if \`limits.h' doesn't.])
 510 fi
 511 fi])
 512
 513 dnl Checking for long long.
 514 dnl By Caolan McNamara <caolan@skynet.ie>
 515 dnl Added check for __int64, Zack Weinberg <zackw@stanford.edu>
 516 dnl
 517 AC_DEFUN([gcc_AC_C_LONG_LONG],
 518 [AC_CACHE_CHECK(for long long int, ac_cv_c_long_long,
 519   [AC_TRY_COMPILE(,[long long int i;],
 520          ac_cv_c_long_long=yes,
 521          ac_cv_c_long_long=no)])
 522   if test $ac_cv_c_long_long = yes; then
 523     AC_DEFINE(HAVE_LONG_LONG, 1,
 524       [Define if your compiler supports the \`long long' type.])
 525   fi
 526 AC_CACHE_CHECK(for __int64, ac_cv_c___int64,
 527   [AC_TRY_COMPILE(,[__int64 i;],
 528         ac_cv_c___int64=yes,
 529         ac_cv_c___int64=no)])
 530   if test $ac_cv_c___int64 = yes; then
 531     AC_DEFINE(HAVE___INT64, 1,
 532       [Define if your compiler supports the \`__int64' type.])
 533   fi
 534 ])
 535
 536 #serial AM2
 537
 538 dnl From Bruno Haible.
 539
 540 AC_DEFUN([AM_ICONV],
 541 [
 542   dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
 543   dnl those with the standalone portable GNU libiconv installed).
 544
 545   am_cv_lib_iconv_ldpath=
 546   AC_ARG_WITH([libiconv-prefix],
 547 [  --with-libiconv-prefix=DIR  search for libiconv in DIR/include and DIR/lib], [
 548     for dir in `echo "$withval" | tr : ' '`; do
 549       if test -d $dir/include; then CPPFLAGS="$CPPFLAGS -I$dir/include"; fi
 550       if test -d $dir/lib; then am_cv_lib_iconv_ldpath="-L$dir/lib"; fi
 551     done
 552    ])
 553
 554   AC_CHECK_HEADERS([iconv.h])
 555
 556   AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [
 557     am_cv_func_iconv="no, consider installing GNU libiconv"
 558     am_cv_lib_iconv=no
 559     AC_TRY_LINK([#include <stdlib.h>
 560 #include <iconv.h>],
 561       [iconv_t cd = iconv_open("","");
 562        iconv(cd,NULL,NULL,NULL,NULL);
 563        iconv_close(cd);],
 564       am_cv_func_iconv=yes)
 565     if test "$am_cv_func_iconv" != yes; then
 566       am_save_LIBS="$LIBS"
 567       LIBS="$LIBS $am_cv_libiconv_ldpath -liconv"
 568       AC_TRY_LINK([#include <stdlib.h>
 569 #include <iconv.h>],
 570         [iconv_t cd = iconv_open("","");
 571          iconv(cd,NULL,NULL,NULL,NULL);
 572          iconv_close(cd);],
 573         am_cv_lib_iconv=yes
 574         am_cv_func_iconv=yes)
 575       LIBS="$am_save_LIBS"
 576     fi
 577   ])
 578   if test "$am_cv_func_iconv" = yes; then
 579     AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
 580     AC_MSG_CHECKING([for iconv declaration])
 581     AC_CACHE_VAL(am_cv_proto_iconv, [
 582       AC_TRY_COMPILE([
 583 #include <stdlib.h>
 584 #include <iconv.h>
 585 extern
 586 #ifdef __cplusplus
 587 "C"
 588 #endif
 589 #if defined(__STDC__) || defined(__cplusplus)
 590 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
 591 #else
 592 size_t iconv();
 593 #endif
 594 ], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const")
 595       am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
 596     am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
 597     AC_MSG_RESULT([$]{ac_t:-
 598          }[$]am_cv_proto_iconv)
 599     AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1,
 600       [Define as const if the declaration of iconv() needs const.])
 601   fi
 602   LIBICONV=
 603   if test "$am_cv_lib_iconv" = yes; then
 604     LIBICONV="$am_cv_lib_iconv_ldpath -liconv"
 605   fi
 606   AC_SUBST(LIBICONV)
 607 ])
 608
 609 AC_DEFUN([gcc_AC_INITFINI_ARRAY],
 610 [AC_ARG_ENABLE(initfini-array,
 611         [  --enable-initfini-array      use .init_array/.fini_array sections],
 612         [], [
 613 AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support,
 614                  gcc_cv_initfini_array, [dnl
 615   AC_TRY_RUN([
 616 static int x = -1;
 617 int main (void) { return x; }
 618 int foo (void) { x = 0; }
 619 int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;],
 620              [gcc_cv_initfini_array=yes], [gcc_cv_initfini_array=no],
 621              [gcc_cv_initfini_array=no])])
 622   enable_initfini_array=$gcc_cv_initfini_array
 623 ])
 624 if test $enable_initfini_array = yes; then
 625   AC_DEFINE(HAVE_INITFINI_ARRAY, 1,
 626     [Define .init_array/.fini_array sections are available and working.])
 627 fi])
 628
 629 dnl # _gcc_COMPUTE_GAS_VERSION
 630 dnl # Used by gcc_GAS_VERSION_GTE_IFELSE
 631 dnl #
 632 dnl # WARNING:
 633 dnl # gcc_cv_as_gas_srcdir must be defined before this.
 634 dnl # This gross requirement will go away eventually.
 635 AC_DEFUN([_gcc_COMPUTE_GAS_VERSION],
 636 [gcc_cv_as_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
 637 for f in $gcc_cv_as_bfd_srcdir/configure \
 638          $gcc_cv_as_gas_srcdir/configure \
 639          $gcc_cv_as_gas_srcdir/configure.in \
 640          $gcc_cv_as_gas_srcdir/Makefile.in ; do
 641   gcc_cv_gas_version=`grep '^VERSION=[[0-9]]*\.[[0-9]]*' $f`
 642   if test x$gcc_cv_gas_version != x; then
 643     break
 644   fi
 645 done
 646 gcc_cv_gas_major_version=`expr "$gcc_cv_gas_version" : "VERSION=\([[0-9]]*\)"`
 647 gcc_cv_gas_minor_version=`expr "$gcc_cv_gas_version" : "VERSION=[[0-9]]*\.\([[0-9]]*\)"`
 648 gcc_cv_gas_patch_version=`expr "$gcc_cv_gas_version" : "VERSION=[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)"`
 649 case $gcc_cv_gas_patch_version in
 650   "") gcc_cv_gas_patch_version="0" ;;
 651 esac
 652 gcc_cv_gas_vers=`expr \( \( $gcc_cv_gas_major_version \* 1000 \) \
 653                             + $gcc_cv_gas_minor_version \) \* 1000 \
 654                             + $gcc_cv_gas_patch_version`
 655 ]) []dnl # _gcc_COMPUTE_GAS_VERSION
 656
 657 dnl # gcc_GAS_VERSION_GTE_IFELSE([elf,] major, minor, patchlevel,
 658 dnl #                     [command_if_true = :], [command_if_false = :])
 659 dnl # Check to see if the version of GAS is greater than or
 660 dnl # equal to the specified version.
 661 dnl #
 662 dnl # The first ifelse() shortens the shell code if the patchlevel
 663 dnl # is unimportant (the usual case).  The others handle missing
 664 dnl # commands.  Note that the tests are structured so that the most
 665 dnl # common version number cases are tested first.
 666 AC_DEFUN([_gcc_GAS_VERSION_GTE_IFELSE],
 667 [ifelse([$1], elf,
 668  [if test $in_tree_gas_is_elf = yes \
 669   &&],
 670  [if]) test $gcc_cv_gas_vers -ge `expr \( \( $2 \* 1000 \) + $3 \) \* 1000 + $4`
 671   then dnl
 672 ifelse([$5],,:,[$5])[]dnl
 673 ifelse([$6],,,[
 674   else $6])
 675 fi])
 676
 677 AC_DEFUN([gcc_GAS_VERSION_GTE_IFELSE],
 678 [AC_REQUIRE([_gcc_COMPUTE_GAS_VERSION])dnl
 679 ifelse([$1], elf, [_gcc_GAS_VERSION_GTE_IFELSE($@)],
 680                   [_gcc_GAS_VERSION_GTE_IFELSE(,$@)])])
 681
 682 dnl gcc_GAS_CHECK_FEATURE(description, cv, [[elf,]major,minor,patchlevel],
 683 dnl [extra switches to as], [assembler input],
 684 dnl [extra testing logic], [command if feature available])
 685 dnl
 686 dnl Checks for an assembler feature.  If we are building an in-tree
 687 dnl gas, the feature is available if the associated assembler version
 688 dnl is greater than or equal to major.minor.patchlevel.  If not, then
 689 dnl ASSEMBLER INPUT is fed to the assembler and the feature is available
 690 dnl if assembly succeeds.  If EXTRA TESTING LOGIC is not the empty string,
 691 dnl then it is run instead of simply setting CV to "yes" - it is responsible
 692 dnl for doing so, if appropriate.
 693 AC_DEFUN([gcc_GAS_CHECK_FEATURE],
 694 [AC_CACHE_CHECK([assembler for $1], [$2],
 695  [[$2]=no
 696   ifelse([$3],,,[dnl
 697   if test $in_tree_gas = yes; then
 698     gcc_GAS_VERSION_GTE_IFELSE($3, [[$2]=yes])
 699   el])if test x$gcc_cv_as != x; then
 700     echo ifelse(m4_substr([$5],0,1),[$], "[$5]", '[$5]') > conftest.s
 701     if AC_TRY_COMMAND([$gcc_cv_as $4 -o conftest.o conftest.s >&AC_FD_CC])
 702     then
 703         ifelse([$6],, [$2]=yes, [$6])
 704     else
 705       echo "configure: failed program was" >&AC_FD_CC
 706       cat conftest.s >&AC_FD_CC
 707     fi
 708     rm -f conftest.o conftest.s
 709   fi])
 710 ifelse([$7],,,[dnl
 711 if test $[$2] = yes; then
 712   $7
 713 fi])])
 714
 715 # lcmessage.m4 serial 3 (gettext-0.11.3)
 716 dnl Copyright (C) 1995-2002 Free Software Foundation, Inc.
 717 dnl This file is free software, distributed under the terms of the GNU
 718 dnl General Public License.  As a special exception to the GNU General
 719 dnl Public License, this file may be distributed as part of a program
 720 dnl that contains a configuration script generated by Autoconf, under
 721 dnl the same distribution terms as the rest of that program.
 722 dnl
 723 dnl This file can can be used in projects which are not available under
 724 dnl the GNU General Public License or the GNU Library General Public
 725 dnl License but which still want to provide support for the GNU gettext
 726 dnl functionality.
 727 dnl Please note that the actual code of the GNU gettext library is covered
 728 dnl by the GNU Library General Public License, and the rest of the GNU
 729 dnl gettext package package is covered by the GNU General Public License.
 730 dnl They are *not* in the public domain.
 731
 732 dnl Authors:
 733 dnl   Ulrich Drepper <drepper@cygnus.com>, 1995.
 734
 735 # Check whether LC_MESSAGES is available in <locale.h>.
 736
 737 AC_DEFUN([AM_LC_MESSAGES],
 738 [
 739   AC_CACHE_CHECK([for LC_MESSAGES], am_cv_val_LC_MESSAGES,
 740     [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
 741        am_cv_val_LC_MESSAGES=yes, am_cv_val_LC_MESSAGES=no)])
 742   if test $am_cv_val_LC_MESSAGES = yes; then
 743     AC_DEFINE(HAVE_LC_MESSAGES, 1,
 744       [Define if your <locale.h> file defines LC_MESSAGES.])
 745   fi
 746 ])