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 Fixed AC_CHECK_TYPE that doesn't need anything in acconfig.h.
  20 dnl Remove after migrating to 2.5x.
  21 AC_DEFUN(gcc_AC_CHECK_TYPE,
  22 [AC_REQUIRE([AC_HEADER_STDC])dnl
  23 AC_MSG_CHECKING(for $1)
  24 AC_CACHE_VAL(ac_cv_type_$1,
  25 [AC_EGREP_CPP(dnl
  26 changequote(<<,>>)dnl
  27 <<(^|[^a-zA-Z_0-9])$1[^a-zA-Z_0-9]>>dnl
  28 changequote([,]), [#include <sys/types.h>
  29 #if STDC_HEADERS
  30 #include <stdlib.h>
  31 #include <stddef.h>
  32 #endif], ac_cv_type_$1=yes, ac_cv_type_$1=no)])dnl
  33 AC_MSG_RESULT($ac_cv_type_$1)
  34 if test $ac_cv_type_$1 = no; then
  35   AC_DEFINE($1, $2, [Define as \`$2' if <sys/types.h> doesn't define.])
  36 fi
  37 ])
  38
  39
  40 dnl See whether we can include both string.h and strings.h.
  41 AC_DEFUN(gcc_AC_HEADER_STRING,
  42 [AC_CACHE_CHECK([whether string.h and strings.h may both be included],
  43   gcc_cv_header_string,
  44 [AC_TRY_COMPILE([#include <string.h>
  45 #include <strings.h>], , gcc_cv_header_string=yes, gcc_cv_header_string=no)])
  46 if test $gcc_cv_header_string = yes; then
  47   AC_DEFINE(STRING_WITH_STRINGS, 1, [Define if you can safely include both <string.h> and <strings.h>.])
  48 fi
  49 ])
  50
  51 dnl See whether we need a declaration for a function.
  52 dnl The result is highly dependent on the INCLUDES passed in, so make sure
  53 dnl to use a different cache variable name in this macro if it is invoked
  54 dnl in a different context somewhere else.
  55 dnl gcc_AC_CHECK_DECL(SYMBOL,
  56 dnl     [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND [, INCLUDES]]])
  57 AC_DEFUN(gcc_AC_CHECK_DECL,
  58 [AC_MSG_CHECKING([whether $1 is declared])
  59 AC_CACHE_VAL(gcc_cv_have_decl_$1,
  60 [AC_TRY_COMPILE([$4],
  61 [#ifndef $1
  62 char *(*pfn) = (char *(*)) $1 ;
  63 #endif], eval "gcc_cv_have_decl_$1=yes", eval "gcc_cv_have_decl_$1=no")])
  64 if eval "test \"`echo '$gcc_cv_have_decl_'$1`\" = yes"; then
  65   AC_MSG_RESULT(yes) ; ifelse([$2], , :, [$2])
  66 else
  67   AC_MSG_RESULT(no) ; ifelse([$3], , :, [$3])
  68 fi
  69 ])dnl
  70
  71 dnl Check multiple functions to see whether each needs a declaration.
  72 dnl Arrange to define HAVE_DECL_<FUNCTION> to 0 or 1 as appropriate.
  73 dnl gcc_AC_CHECK_DECLS(SYMBOLS,
  74 dnl     [ACTION-IF-NEEDED [, ACTION-IF-NOT-NEEDED [, INCLUDES]]])
  75 AC_DEFUN(gcc_AC_CHECK_DECLS,
  76 [for ac_func in $1
  77 do
  78 changequote(, )dnl
  79   ac_tr_decl=HAVE_DECL_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
  80 changequote([, ])dnl
  81 gcc_AC_CHECK_DECL($ac_func,
  82   [AC_DEFINE_UNQUOTED($ac_tr_decl, 1) $2],
  83   [AC_DEFINE_UNQUOTED($ac_tr_decl, 0) $3],
  84 dnl It is possible that the include files passed in here are local headers
  85 dnl which supply a backup declaration for the relevant prototype based on
  86 dnl the definition of (or lack of) the HAVE_DECL_ macro.  If so, this test
  87 dnl will always return success.  E.g. see libiberty.h's handling of
  88 dnl `basename'.  To avoid this, we define the relevant HAVE_DECL_ macro to
  89 dnl 1 so that any local headers used do not provide their own prototype
  90 dnl during this test.
  91 #undef $ac_tr_decl
  92 #define $ac_tr_decl 1
  93   $4
  94 )
  95 done
  96 dnl Automatically generate config.h entries via autoheader.
  97 if test x = y ; then
  98   patsubst(translit([$1], [a-z], [A-Z]), [\w+],
  99     [AC_DEFINE([HAVE_DECL_\&], 1,
 100       [Define to 1 if we found this declaration otherwise define to 0.])])dnl
 101 fi
 102 ])
 103
 104 dnl See if the printf functions in libc support %p in format strings.
 105 AC_DEFUN(gcc_AC_FUNC_PRINTF_PTR,
 106 [AC_CACHE_CHECK(whether the printf functions support %p,
 107   gcc_cv_func_printf_ptr,
 108 [AC_TRY_RUN([#include <stdio.h>
 109
 110 int main()
 111 {
 112   char buf[64];
 113   char *p = buf, *q = NULL;
 114   sprintf(buf, "%p", p);
 115   sscanf(buf, "%p", &q);
 116   return (p != q);
 117 }], gcc_cv_func_printf_ptr=yes, gcc_cv_func_printf_ptr=no,
 118         gcc_cv_func_printf_ptr=no)
 119 rm -f core core.* *.core])
 120 if test $gcc_cv_func_printf_ptr = yes ; then
 121   AC_DEFINE(HAVE_PRINTF_PTR, 1, [Define if printf supports "%p".])
 122 fi
 123 ])
 124
 125 dnl See if symbolic links work and if not, try to substitute either hard links or simple copy.
 126 AC_DEFUN(gcc_AC_PROG_LN_S,
 127 [AC_MSG_CHECKING(whether ln -s works)
 128 AC_CACHE_VAL(gcc_cv_prog_LN_S,
 129 [rm -f conftestdata_t
 130 echo >conftestdata_f
 131 if ln -s conftestdata_f conftestdata_t 2>/dev/null
 132 then
 133   gcc_cv_prog_LN_S="ln -s"
 134 else
 135   if ln conftestdata_f conftestdata_t 2>/dev/null
 136   then
 137     gcc_cv_prog_LN_S=ln
 138   else
 139     gcc_cv_prog_LN_S=cp
 140   fi
 141 fi
 142 rm -f conftestdata_f conftestdata_t
 143 ])dnl
 144 LN_S="$gcc_cv_prog_LN_S"
 145 if test "$gcc_cv_prog_LN_S" = "ln -s"; then
 146   AC_MSG_RESULT(yes)
 147 else
 148   if test "$gcc_cv_prog_LN_S" = "ln"; then
 149     AC_MSG_RESULT([no, using ln])
 150   else
 151     AC_MSG_RESULT([no, and neither does ln, so using cp])
 152   fi
 153 fi
 154 AC_SUBST(LN_S)dnl
 155 ])
 156
 157 dnl See if hard links work and if not, try to substitute either symbolic links or simple copy.
 158 AC_DEFUN(gcc_AC_PROG_LN,
 159 [AC_MSG_CHECKING(whether ln works)
 160 AC_CACHE_VAL(gcc_cv_prog_LN,
 161 [rm -f conftestdata_t
 162 echo >conftestdata_f
 163 if ln conftestdata_f conftestdata_t 2>/dev/null
 164 then
 165   gcc_cv_prog_LN="ln"
 166 else
 167   if ln -s conftestdata_f conftestdata_t 2>/dev/null
 168   then
 169     gcc_cv_prog_LN="ln -s"
 170   else
 171     gcc_cv_prog_LN=cp
 172   fi
 173 fi
 174 rm -f conftestdata_f conftestdata_t
 175 ])dnl
 176 LN="$gcc_cv_prog_LN"
 177 if test "$gcc_cv_prog_LN" = "ln"; then
 178   AC_MSG_RESULT(yes)
 179 else
 180   if test "$gcc_cv_prog_LN" = "ln -s"; then
 181     AC_MSG_RESULT([no, using ln -s])
 182   else
 183     AC_MSG_RESULT([no, and neither does ln -s, so using cp])
 184   fi
 185 fi
 186 AC_SUBST(LN)dnl
 187 ])
 188
 189 dnl Check whether _Bool is built-in.
 190 AC_DEFUN(gcc_AC_C__BOOL,
 191 [AC_CACHE_CHECK(for built-in _Bool, gcc_cv_c__bool,
 192 [AC_TRY_COMPILE(,
 193 [_Bool foo;],
 194 gcc_cv_c__bool=yes, gcc_cv_c__bool=no)
 195 ])
 196 if test $gcc_cv_c__bool = yes; then
 197   AC_DEFINE(HAVE__BOOL, 1, [Define if the \`_Bool' type is built-in.])
 198 fi
 199 ])
 200
 201 dnl Define MKDIR_TAKES_ONE_ARG if mkdir accepts only one argument instead
 202 dnl of the usual 2.
 203 AC_DEFUN(gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG,
 204 [AC_CACHE_CHECK([if mkdir takes one argument], gcc_cv_mkdir_takes_one_arg,
 205 [AC_TRY_COMPILE([
 206 #include <sys/types.h>
 207 #ifdef HAVE_SYS_STAT_H
 208 # include <sys/stat.h>
 209 #endif
 210 #ifdef HAVE_UNISTD_H
 211 # include <unistd.h>
 212 #endif
 213 #ifdef HAVE_DIRECT_H
 214 # include <direct.h>
 215 #endif], [mkdir ("foo", 0);],
 216         gcc_cv_mkdir_takes_one_arg=no, gcc_cv_mkdir_takes_one_arg=yes)])
 217 if test $gcc_cv_mkdir_takes_one_arg = yes ; then
 218   AC_DEFINE(MKDIR_TAKES_ONE_ARG, 1, [Define if host mkdir takes a single argument.])
 219 fi
 220 ])
 221
 222 AC_DEFUN(gcc_AC_PROG_INSTALL,
 223 [AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
 224 # Find a good install program.  We prefer a C program (faster),
 225 # so one script is as good as another.  But avoid the broken or
 226 # incompatible versions:
 227 # SysV /etc/install, /usr/sbin/install
 228 # SunOS /usr/etc/install
 229 # IRIX /sbin/install
 230 # AIX /bin/install
 231 # AFS /usr/afsws/bin/install, which mishandles nonexistent args
 232 # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
 233 # ./install, which can be erroneously created by make from ./install.sh.
 234 AC_MSG_CHECKING(for a BSD compatible install)
 235 if test -z "$INSTALL"; then
 236 AC_CACHE_VAL(ac_cv_path_install,
 237 [  IFS="${IFS=  }"; ac_save_IFS="$IFS"; IFS="${IFS}:"
 238   for ac_dir in $PATH; do
 239     # Account for people who put trailing slashes in PATH elements.
 240     case "$ac_dir/" in
 241     /|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;;
 242     *)
 243       # OSF1 and SCO ODT 3.0 have their own names for install.
 244       for ac_prog in ginstall scoinst install; do
 245         if test -f $ac_dir/$ac_prog; then
 246           if test $ac_prog = install &&
 247             grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then
 248             # AIX install.  It has an incompatible calling convention.
 249             # OSF/1 installbsd also uses dspmsg, but is usable.
 250             :
 251           else
 252             ac_cv_path_install="$ac_dir/$ac_prog -c"
 253             break 2
 254           fi
 255         fi
 256       done
 257       ;;
 258     esac
 259   done
 260   IFS="$ac_save_IFS"
 261 ])dnl
 262   if test "${ac_cv_path_install+set}" = set; then
 263     INSTALL="$ac_cv_path_install"
 264   else
 265     # As a last resort, use the slow shell script.  We don't cache a
 266     # path for INSTALL within a source directory, because that will
 267     # break other packages using the cache if that directory is
 268     # removed, or if the path is relative.
 269     INSTALL="$ac_install_sh"
 270   fi
 271 fi
 272 dnl We do special magic for INSTALL instead of AC_SUBST, to get
 273 dnl relative paths right.
 274 AC_MSG_RESULT($INSTALL)
 275 AC_SUBST(INSTALL)dnl
 276
 277 # Use test -z because SunOS4 sh mishandles braces in ${var-val}.
 278 # It thinks the first close brace ends the variable substitution.
 279 test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
 280 AC_SUBST(INSTALL_PROGRAM)dnl
 281
 282 test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
 283 AC_SUBST(INSTALL_DATA)dnl
 284 ])
 285
 286 dnl Test for GNAT.
 287 dnl We require the gnatbind program, and a compiler driver that
 288 dnl understands Ada.  The user may set the driver name explicitly
 289 dnl with ADAC; also, the user's CC setting is tried.  Failing that,
 290 dnl we try gcc and cc, then a sampling of names known to be used for
 291 dnl the Ada driver on various systems.
 292 dnl
 293 dnl Sets the shell variable have_gnat to yes or no as appropriate, and
 294 dnl substitutes GNATBIND and ADAC.
 295 AC_DEFUN([gcc_AC_PROG_GNAT],
 296 [AC_REQUIRE([AC_CHECK_TOOL_PREFIX])
 297 AC_CHECK_TOOL(GNATBIND, gnatbind, no)
 298 AC_CACHE_CHECK([for compiler driver that understands Ada],
 299                  gcc_cv_prog_adac,
 300 [cat >conftest.adb <<EOF
 301 procedure conftest is begin null; end conftest;
 302 EOF
 303 gcc_cv_prog_adac=no
 304 # Have to do ac_tool_prefix and user overrides by hand.
 305 for cand in ${ADAC+"$ADAC"} ${CC+"$CC"} \
 306             ${ac_tool_prefix}gcc        gcc             \
 307             ${ac_tool_prefix}cc         cc              \
 308             ${ac_tool_prefix}gnatgcc    gnatgcc         \
 309             ${ac_tool_prefix}gnatcc     gnatcc          \
 310             ${ac_tool_prefix}adagcc     adagcc          \
 311             ${ac_tool_prefix}adacc      adacc           ; do
 312   # There is a bug in all released versions of GCC which causes the
 313   # driver to exit successfully when the appropriate language module
 314   # has not been installed.  This is fixed in 2.95.4, 3.0.2, and 3.1.
 315   # Therefore we must check for the error message as well as an
 316   # unsuccessful exit.
 317   errors=`($cand -c conftest.adb) 2>&1 || echo failure`
 318   if test x"$errors" = x; then
 319     gcc_cv_prog_adac=$cand
 320     break
 321   fi
 322 done
 323 rm -f conftest.*])
 324 ADAC=$gcc_cv_prog_adac
 325 AC_SUBST(ADAC)
 326
 327 if test x$GNATBIND != xno && test x$ADAC != xno; then
 328   have_gnat=yes
 329 else
 330   have_gnat=no
 331 fi
 332 ])
 333
 334 dnl GCC_PATH_PROG(VARIABLE, PROG-TO-CHECK-FOR [, VALUE-IF-NOT-FOUND [, PATH]])
 335 dnl like AC_PATH_PROG but use other cache variables
 336 AC_DEFUN(GCC_PATH_PROG,
 337 [# Extract the first word of "$2", so it can be a program name with args.
 338 set dummy $2; ac_word=[$]2
 339 AC_MSG_CHECKING([for $ac_word])
 340 AC_CACHE_VAL(gcc_cv_path_$1,
 341 [case "[$]$1" in
 342   /*)
 343   gcc_cv_path_$1="[$]$1" # Let the user override the test with a path.
 344   ;;
 345   ?:/*)
 346   gcc_cv_path_$1="[$]$1" # Let the user override the test with a dos path.
 347   ;;
 348   *)
 349   IFS="${IFS=   }"; ac_save_ifs="$IFS"; IFS=":"
 350 dnl $ac_dummy forces splitting on constant user-supplied paths.
 351 dnl POSIX.2 word splitting is done only on the output of word expansions,
 352 dnl not every word.  This closes a longstanding sh security hole.
 353   ac_dummy="ifelse([$4], , $PATH, [$4])"
 354   for ac_dir in $ac_dummy; do
 355     test -z "$ac_dir" && ac_dir=.
 356     if test -f $ac_dir/$ac_word; then
 357       gcc_cv_path_$1="$ac_dir/$ac_word"
 358       break
 359     fi
 360   done
 361   IFS="$ac_save_ifs"
 362 dnl If no 3rd arg is given, leave the cache variable unset,
 363 dnl so GCC_PATH_PROGS will keep looking.
 364 ifelse([$3], , , [  test -z "[$]gcc_cv_path_$1" && gcc_cv_path_$1="$3"
 365 ])dnl
 366   ;;
 367 esac])dnl
 368 $1="$gcc_cv_path_$1"
 369 if test -n "[$]$1"; then
 370   AC_MSG_RESULT([$]$1)
 371 else
 372   AC_MSG_RESULT(no)
 373 fi
 374 AC_SUBST($1)dnl
 375 ])
 376
 377 # mmap(2) blacklisting.  Some platforms provide the mmap library routine
 378 # but don't support all of the features we need from it.
 379 AC_DEFUN([gcc_AC_FUNC_MMAP_BLACKLIST],
 380 [if test $ac_cv_header_sys_mman_h != yes \
 381  || test $ac_cv_func_mmap != yes; then
 382    gcc_cv_func_mmap_file=no
 383    gcc_cv_func_mmap_dev_zero=no
 384    gcc_cv_func_mmap_anon=no
 385 else
 386    AC_CACHE_CHECK([whether read-only mmap of a plain file works],
 387   gcc_cv_func_mmap_file,
 388   [# Add a system to this blacklist if
 389    # mmap(0, stat_size, PROT_READ, MAP_PRIVATE, fd, 0) doesn't return a
 390    # memory area containing the same data that you'd get if you applied
 391    # read() to the same fd.  The only system known to have a problem here
 392    # is VMS, where text files have record structure.
 393    case "$host_os" in
 394      vms*)
 395         gcc_cv_func_mmap_file=no ;;
 396      *)
 397         gcc_cv_func_mmap_file=yes;;
 398    esac])
 399    AC_CACHE_CHECK([whether mmap from /dev/zero works],
 400   gcc_cv_func_mmap_dev_zero,
 401   [# Add a system to this blacklist if it has mmap() but /dev/zero
 402    # does not exist, or if mmapping /dev/zero does not give anonymous
 403    # zeroed pages with both the following properties:
 404    # 1. If you map N consecutive pages in with one call, and then
 405    #    unmap any subset of those pages, the pages that were not
 406    #    explicitly unmapped remain accessible.
 407    # 2. If you map two adjacent blocks of memory and then unmap them
 408    #    both at once, they must both go away.
 409    # Systems known to be in this category are Windows (all variants),
 410    # VMS, and Darwin.
 411    case "$host_os" in
 412      vms* | cygwin* | pe | mingw* | darwin*)
 413         gcc_cv_func_mmap_dev_zero=no ;;
 414      *)
 415         gcc_cv_func_mmap_dev_zero=yes;;
 416    esac])
 417
 418    # Unlike /dev/zero, the MAP_ANON(YMOUS) defines can be probed for.
 419    AC_CACHE_CHECK([for MAP_ANON(YMOUS)], gcc_cv_decl_map_anon,
 420     [AC_TRY_COMPILE(
 421 [#include <sys/types.h>
 422 #include <sys/mman.h>
 423 #include <unistd.h>
 424
 425 #ifndef MAP_ANONYMOUS
 426 #define MAP_ANONYMOUS MAP_ANON
 427 #endif
 428 ],
 429 [int n = MAP_ANONYMOUS;],
 430     gcc_cv_decl_map_anon=yes,
 431     gcc_cv_decl_map_anon=no)])
 432
 433    if test $gcc_cv_decl_map_anon = no; then
 434      gcc_cv_func_mmap_anon=no
 435    else
 436      AC_CACHE_CHECK([whether mmap with MAP_ANON(YMOUS) works],
 437      gcc_cv_func_mmap_anon,
 438   [# Add a system to this blacklist if it has mmap() and MAP_ANON or
 439    # MAP_ANONYMOUS, but using mmap(..., MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
 440    # doesn't give anonymous zeroed pages with the same properties listed
 441    # above for use of /dev/zero.
 442    # Systems known to be in this category are Windows, VMS, and SCO Unix.
 443    case "$host_os" in
 444      vms* | cygwin* | pe | mingw* | sco* | udk* )
 445         gcc_cv_func_mmap_anon=no ;;
 446      *)
 447         gcc_cv_func_mmap_anon=yes;;
 448    esac])
 449    fi
 450 fi
 451
 452 if test $gcc_cv_func_mmap_file = yes; then
 453   AC_DEFINE(HAVE_MMAP_FILE, 1,
 454             [Define if read-only mmap of a plain file works.])
 455 fi
 456 if test $gcc_cv_func_mmap_dev_zero = yes; then
 457   AC_DEFINE(HAVE_MMAP_DEV_ZERO, 1,
 458             [Define if mmap of /dev/zero works.])
 459 fi
 460 if test $gcc_cv_func_mmap_anon = yes; then
 461   AC_DEFINE(HAVE_MMAP_ANON, 1,
 462             [Define if mmap with MAP_ANON(YMOUS) works.])
 463 fi
 464 ])
 465
 466 dnl Locate a program and check that its version is acceptable.
 467 dnl AC_PROG_CHECK_VER(var, name, version-switch,
 468 dnl                  version-extract-regexp, version-glob)
 469 AC_DEFUN(gcc_AC_CHECK_PROG_VER,
 470 [AC_CHECK_PROG([$1], [$2], [$2])
 471 if test -n "[$]$1"; then
 472   # Found it, now check the version.
 473   AC_CACHE_CHECK(for modern $2, gcc_cv_prog_$2_modern,
 474 [changequote(<<,>>)dnl
 475   ac_prog_version=`<<$>>$1 $3 2>&1 |
 476                    sed -n 's/^.*patsubst(<<$4>>,/,\/).*$/\1/p'`
 477 changequote([,])dnl
 478   echo "configure:__oline__: version of $2 is $ac_prog_version" >&AC_FD_CC
 479 changequote(<<,>>)dnl
 480   case $ac_prog_version in
 481     '')     gcc_cv_prog_$2_modern=no;;
 482     <<$5>>)
 483             gcc_cv_prog_$2_modern=yes;;
 484     *)      gcc_cv_prog_$2_modern=no;;
 485   esac
 486 changequote([,])dnl
 487 ])
 488 else
 489   gcc_cv_prog_$2_modern=no
 490 fi
 491 ])
 492
 493 dnl Determine if enumerated bitfields are unsigned.   ISO C says they can
 494 dnl be either signed or unsigned.
 495 dnl
 496 AC_DEFUN(gcc_AC_C_ENUM_BF_UNSIGNED,
 497 [AC_CACHE_CHECK(for unsigned enumerated bitfields, gcc_cv_enum_bf_unsigned,
 498 [AC_TRY_RUN(#include <stdlib.h>
 499 enum t { BLAH = 128 } ;
 500 struct s_t { enum t member : 8; } s ;
 501 int main(void)
 502 {
 503         s.member = BLAH;
 504         if (s.member < 0) exit(1);
 505         exit(0);
 506
 507 }, gcc_cv_enum_bf_unsigned=yes, gcc_cv_enum_bf_unsigned=no, gcc_cv_enum_bf_unsigned=yes)])
 508 if test $gcc_cv_enum_bf_unsigned = yes; then
 509   AC_DEFINE(ENUM_BITFIELDS_ARE_UNSIGNED, 1,
 510     [Define if enumerated bitfields are treated as unsigned values.])
 511 fi])
 512
 513 dnl Probe number of bits in a byte.
 514 dnl Note C89 requires CHAR_BIT >= 8.
 515 dnl
 516 AC_DEFUN(gcc_AC_C_CHAR_BIT,
 517 [AC_CACHE_CHECK(for CHAR_BIT, gcc_cv_decl_char_bit,
 518 [AC_EGREP_CPP(found,
 519 [#ifdef HAVE_LIMITS_H
 520 #include <limits.h>
 521 #endif
 522 #ifdef CHAR_BIT
 523 found
 524 #endif], gcc_cv_decl_char_bit=yes, gcc_cv_decl_char_bit=no)
 525 ])
 526 if test $gcc_cv_decl_char_bit = no; then
 527   AC_CACHE_CHECK(number of bits in a byte, gcc_cv_c_nbby,
 528 [i=8
 529  gcc_cv_c_nbby=
 530  while test $i -lt 65; do
 531    AC_TRY_COMPILE(,
 532      [switch(0) {
 533   case (unsigned char)((unsigned long)1 << $i) == ((unsigned long)1 << $i):
 534   case (unsigned char)((unsigned long)1<<($i-1)) == ((unsigned long)1<<($i-1)):
 535   ; }],
 536      [gcc_cv_c_nbby=$i; break])
 537    i=`expr $i + 1`
 538  done
 539  test -z "$gcc_cv_c_nbby" && gcc_cv_c_nbby=failed
 540 ])
 541 if test $gcc_cv_c_nbby = failed; then
 542   AC_MSG_ERROR(cannot determine number of bits in a byte)
 543 else
 544   AC_DEFINE_UNQUOTED(CHAR_BIT, $gcc_cv_c_nbby,
 545   [Define as the number of bits in a byte, if \`limits.h' doesn't.])
 546 fi
 547 fi])
 548
 549 dnl Checking for long long.
 550 dnl By Caolan McNamara <caolan@skynet.ie>
 551 dnl Added check for __int64, Zack Weinberg <zackw@stanford.edu>
 552 dnl
 553 AC_DEFUN([gcc_AC_C_LONG_LONG],
 554 [AC_CACHE_CHECK(for long long int, ac_cv_c_long_long,
 555   [AC_TRY_COMPILE(,[long long int i;],
 556          ac_cv_c_long_long=yes,
 557          ac_cv_c_long_long=no)])
 558   if test $ac_cv_c_long_long = yes; then
 559     AC_DEFINE(HAVE_LONG_LONG, 1,
 560       [Define if your compiler supports the \`long long' type.])
 561   fi
 562 AC_CACHE_CHECK(for __int64, ac_cv_c___int64,
 563   [AC_TRY_COMPILE(,[__int64 i;],
 564         ac_cv_c___int64=yes,
 565         ac_cv_c___int64=no)])
 566   if test $ac_cv_c___int64 = yes; then
 567     AC_DEFINE(HAVE___INT64, 1,
 568       [Define if your compiler supports the \`__int64' type.])
 569   fi
 570 ])
 571
 572 #serial AM2
 573
 574 dnl From Bruno Haible.
 575
 576 AC_DEFUN([AM_ICONV],
 577 [
 578   dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
 579   dnl those with the standalone portable GNU libiconv installed).
 580
 581   am_cv_lib_iconv_ldpath=
 582   AC_ARG_WITH([libiconv-prefix],
 583 [  --with-libiconv-prefix=DIR  search for libiconv in DIR/include and DIR/lib], [
 584     for dir in `echo "$withval" | tr : ' '`; do
 585       if test -d $dir/include; then CPPFLAGS="$CPPFLAGS -I$dir/include"; fi
 586       if test -d $dir/lib; then am_cv_lib_iconv_ldpath="-L$dir/lib"; fi
 587     done
 588    ])
 589
 590   AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [
 591     am_cv_func_iconv="no, consider installing GNU libiconv"
 592     am_cv_lib_iconv=no
 593     AC_TRY_LINK([#include <stdlib.h>
 594 #include <iconv.h>],
 595       [iconv_t cd = iconv_open("","");
 596        iconv(cd,NULL,NULL,NULL,NULL);
 597        iconv_close(cd);],
 598       am_cv_func_iconv=yes)
 599     if test "$am_cv_func_iconv" != yes; then
 600       am_save_LIBS="$LIBS"
 601       LIBS="$LIBS $am_cv_libiconv_ldpath -liconv"
 602       AC_TRY_LINK([#include <stdlib.h>
 603 #include <iconv.h>],
 604         [iconv_t cd = iconv_open("","");
 605          iconv(cd,NULL,NULL,NULL,NULL);
 606          iconv_close(cd);],
 607         am_cv_lib_iconv=yes
 608         am_cv_func_iconv=yes)
 609       LIBS="$am_save_LIBS"
 610     fi
 611   ])
 612   if test "$am_cv_func_iconv" = yes; then
 613     AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
 614     AC_MSG_CHECKING([for iconv declaration])
 615     AC_CACHE_VAL(am_cv_proto_iconv, [
 616       AC_TRY_COMPILE([
 617 #include <stdlib.h>
 618 #include <iconv.h>
 619 extern
 620 #ifdef __cplusplus
 621 "C"
 622 #endif
 623 #if defined(__STDC__) || defined(__cplusplus)
 624 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
 625 #else
 626 size_t iconv();
 627 #endif
 628 ], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const")
 629       am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
 630     am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
 631     AC_MSG_RESULT([$]{ac_t:-
 632          }[$]am_cv_proto_iconv)
 633     AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1,
 634       [Define as const if the declaration of iconv() needs const.])
 635   fi
 636   LIBICONV=
 637   if test "$am_cv_lib_iconv" = yes; then
 638     LIBICONV="$am_cv_lib_iconv_ldpath -liconv"
 639   fi
 640   AC_SUBST(LIBICONV)
 641 ])
 642
 643 AC_DEFUN(gcc_AC_INITFINI_ARRAY,
 644 [AC_ARG_ENABLE(initfini-array,
 645         [  --enable-initfini-array      use .init_array/.fini_array sections],
 646         [], [
 647 AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support,
 648                  gcc_cv_initfini_array, [dnl
 649   AC_TRY_RUN([
 650 static int x = -1;
 651 int main (void) { return x; }
 652 int foo (void) { x = 0; }
 653 int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;],
 654              [gcc_cv_initfini_array=yes], [gcc_cv_initfini_array=no],
 655              [gcc_cv_initfini_array=no])])
 656   enable_initfini_array=$gcc_cv_initfini_array
 657 ])
 658 if test $enable_initfini_array = yes; then
 659   AC_DEFINE(HAVE_INITFINI_ARRAY, 1,
 660     [Define .init_array/.fini_array sections are available and working.])
 661 fi])
 662
 663 dnl # _gcc_COMPUTE_GAS_VERSION
 664 dnl # Used by gcc_GAS_VERSION_GTE_IFELSE
 665 dnl #
 666 dnl # WARNING:
 667 dnl # gcc_cv_as_gas_srcdir must be defined before this.
 668 dnl # This gross requirement will go away eventually.
 669 AC_DEFUN([_gcc_COMPUTE_GAS_VERSION],
 670 [gcc_cv_as_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
 671 for f in $gcc_cv_as_bfd_srcdir/configure \
 672          $gcc_cv_as_gas_srcdir/configure \
 673          $gcc_cv_as_gas_srcdir/configure.in \
 674          $gcc_cv_as_gas_srcdir/Makefile.in ; do
 675   gcc_cv_gas_version=`grep '^VERSION=[[0-9]]*\.[[0-9]]*' $f`
 676   if test x$gcc_cv_gas_version != x; then
 677     break
 678   fi
 679 done
 680 gcc_cv_gas_major_version=`expr "$gcc_cv_gas_version" : "VERSION=\([[0-9]]*\)"`
 681 gcc_cv_gas_minor_version=`expr "$gcc_cv_gas_version" : "VERSION=[[0-9]]*\.\([[0-9]]*\)"`
 682 gcc_cv_gas_patch_version=`expr "$gcc_cv_gas_version" : "VERSION=[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)"`
 683 gcc_cv_gas_vers=`expr \( \( $gcc_cv_gas_major_version \* 1000 \) \
 684                             + $gcc_cv_gas_minor_version \) \* 1000 \
 685                             + $gcc_cv_gas_patch_version`
 686 ]) []dnl # _gcc_COMPUTE_GAS_VERSION
 687
 688 dnl # gcc_GAS_VERSION_GTE_IFELSE([elf,] major, minor, patchlevel,
 689 dnl #                     [command_if_true = :], [command_if_false = :])
 690 dnl # Check to see if the version of GAS is greater than or
 691 dnl # equal to the specified version.
 692 dnl #
 693 dnl # The first ifelse() shortens the shell code if the patchlevel
 694 dnl # is unimportant (the usual case).  The others handle missing
 695 dnl # commands.  Note that the tests are structured so that the most
 696 dnl # common version number cases are tested first.
 697 AC_DEFUN([_gcc_GAS_VERSION_GTE_IFELSE],
 698 [ifelse([$1], elf,
 699  [if test $in_tree_gas_is_elf = yes \
 700   &&],
 701  [if]) test $gcc_cv_gas_vers -ge `expr \( \( $2 \* 1000 \) + $3 \) \* 1000 + $4`
 702   then dnl
 703 ifelse([$5],,:,[$5])[]dnl
 704 ifelse([$6],,,[
 705   else $6])
 706 fi])
 707
 708 AC_DEFUN([gcc_GAS_VERSION_GTE_IFELSE],
 709 [AC_REQUIRE([_gcc_COMPUTE_GAS_VERSION])dnl
 710 ifelse([$1], elf, [_gcc_GAS_VERSION_GTE_IFELSE($@)],
 711                   [_gcc_GAS_VERSION_GTE_IFELSE(,$@)])])
 712
 713 dnl gcc_GAS_CHECK_FEATURE(description, cv, [[elf,]major,minor,patchlevel],
 714 dnl [extra switches to as], [assembler input],
 715 dnl [extra testing logic], [command if feature available])
 716 dnl
 717 dnl Checks for an assembler feature.  If we are building an in-tree
 718 dnl gas, the feature is available if the associated assembler version
 719 dnl is greater than or equal to major.minor.patchlevel.  If not, then
 720 dnl ASSEMBLER INPUT is fed to the assembler and the feature is available
 721 dnl if assembly succeeds.  If EXTRA TESTING LOGIC is not the empty string,
 722 dnl then it is run instead of simply setting CV to "yes" - it is responsible
 723 dnl for doing so, if appropriate.
 724 AC_DEFUN([gcc_GAS_CHECK_FEATURE],
 725 [AC_CACHE_CHECK([assembler for $1], [$2],
 726  [[$2]=no
 727   ifelse([$3],,,[dnl
 728   if test $in_tree_gas = yes; then
 729     gcc_GAS_VERSION_GTE_IFELSE($3, [[$2]=yes])
 730   el])if test x$gcc_cv_as != x; then
 731     echo ifelse(substr([$5],0,1),[$], "[$5]", '[$5]') > conftest.s
 732     if AC_TRY_COMMAND([$gcc_cv_as $4 -o conftest.o conftest.s >&AC_FD_CC])
 733     then
 734         ifelse([$6],, [$2]=yes, [$6])
 735     else
 736       echo "configure: failed program was" >&AC_FD_CC
 737       cat conftest.s >&AC_FD_CC
 738     fi
 739     rm -f conftest.o conftest.s
 740   fi])
 741 ifelse([$7],,,[dnl
 742 if test $[$2] = yes; then
 743   $7
 744 fi])])
 745
 746 # lcmessage.m4 serial 3 (gettext-0.11.3)
 747 dnl Copyright (C) 1995-2002 Free Software Foundation, Inc.
 748 dnl This file is free software, distributed under the terms of the GNU
 749 dnl General Public License.  As a special exception to the GNU General
 750 dnl Public License, this file may be distributed as part of a program
 751 dnl that contains a configuration script generated by Autoconf, under
 752 dnl the same distribution terms as the rest of that program.
 753 dnl
 754 dnl This file can can be used in projects which are not available under
 755 dnl the GNU General Public License or the GNU Library General Public
 756 dnl License but which still want to provide support for the GNU gettext
 757 dnl functionality.
 758 dnl Please note that the actual code of the GNU gettext library is covered
 759 dnl by the GNU Library General Public License, and the rest of the GNU
 760 dnl gettext package package is covered by the GNU General Public License.
 761 dnl They are *not* in the public domain.
 762
 763 dnl Authors:
 764 dnl   Ulrich Drepper <drepper@cygnus.com>, 1995.
 765
 766 # Check whether LC_MESSAGES is available in <locale.h>.
 767
 768 AC_DEFUN([AM_LC_MESSAGES],
 769 [
 770   AC_CACHE_CHECK([for LC_MESSAGES], am_cv_val_LC_MESSAGES,
 771     [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
 772        am_cv_val_LC_MESSAGES=yes, am_cv_val_LC_MESSAGES=no)])
 773   if test $am_cv_val_LC_MESSAGES = yes; then
 774     AC_DEFINE(HAVE_LC_MESSAGES, 1,
 775       [Define if your <locale.h> file defines LC_MESSAGES.])
 776   fi
 777 ])