gcc/aclocal.m4

   1 m4_include([../config/accross.m4])
   2 m4_include([../config/acx.m4])
   3 m4_include([../config/gettext-sister.m4])
   4 m4_include([../config/gcc-lib-path.m4])
   5 m4_include([../config/iconv.m4])
   6 m4_include([../config/lcmessage.m4])
   7 m4_include([../config/lib-ld.m4])
   8 m4_include([../config/lib-link.m4])
   9 m4_include([../config/lib-prefix.m4])
  10 m4_include([../config/progtest.m4])
  11
  12 dnl See whether we need a declaration for a function.
  13 dnl The result is highly dependent on the INCLUDES passed in, so make sure
  14 dnl to use a different cache variable name in this macro if it is invoked
  15 dnl in a different context somewhere else.
  16 dnl gcc_AC_CHECK_DECL(SYMBOL,
  17 dnl     [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND [, INCLUDES]]])
  18 AC_DEFUN([gcc_AC_CHECK_DECL],
  19 [AC_MSG_CHECKING([whether $1 is declared])
  20 AC_CACHE_VAL(gcc_cv_have_decl_$1,
  21 [AC_TRY_COMPILE([$4],
  22 [#ifndef $1
  23 char *(*pfn) = (char *(*)) $1 ;
  24 #endif], eval "gcc_cv_have_decl_$1=yes", eval "gcc_cv_have_decl_$1=no")])
  25 if eval "test \"`echo '$gcc_cv_have_decl_'$1`\" = yes"; then
  26   AC_MSG_RESULT(yes) ; ifelse([$2], , :, [$2])
  27 else
  28   AC_MSG_RESULT(no) ; ifelse([$3], , :, [$3])
  29 fi
  30 ])dnl
  31
  32 dnl Check multiple functions to see whether each needs a declaration.
  33 dnl Arrange to define HAVE_DECL_<FUNCTION> to 0 or 1 as appropriate.
  34 dnl gcc_AC_CHECK_DECLS(SYMBOLS,
  35 dnl     [ACTION-IF-NEEDED [, ACTION-IF-NOT-NEEDED [, INCLUDES]]])
  36 AC_DEFUN([gcc_AC_CHECK_DECLS],
  37 [AC_FOREACH([gcc_AC_Func], [$1],
  38   [AH_TEMPLATE(AS_TR_CPP(HAVE_DECL_[]gcc_AC_Func),
  39   [Define to 1 if we found a declaration for ']gcc_AC_Func[', otherwise
  40    define to 0.])])dnl
  41 for ac_func in $1
  42 do
  43   ac_tr_decl=AS_TR_CPP([HAVE_DECL_$ac_func])
  44 gcc_AC_CHECK_DECL($ac_func,
  45   [AC_DEFINE_UNQUOTED($ac_tr_decl, 1) $2],
  46   [AC_DEFINE_UNQUOTED($ac_tr_decl, 0) $3],
  47 dnl It is possible that the include files passed in here are local headers
  48 dnl which supply a backup declaration for the relevant prototype based on
  49 dnl the definition of (or lack of) the HAVE_DECL_ macro.  If so, this test
  50 dnl will always return success.  E.g. see libiberty.h's handling of
  51 dnl `basename'.  To avoid this, we define the relevant HAVE_DECL_ macro to
  52 dnl 1 so that any local headers used do not provide their own prototype
  53 dnl during this test.
  54 #undef $ac_tr_decl
  55 #define $ac_tr_decl 1
  56   $4
  57 )
  58 done
  59 ])
  60
  61 dnl 'make compare' can be significantly faster, if cmp itself can
  62 dnl skip bytes instead of using tail.  The test being performed is
  63 dnl "if cmp --ignore-initial=2 t1 t2 && ! cmp --ignore-initial=1 t1 t2"
  64 dnl but we need to sink errors and handle broken shells.  We also test
  65 dnl for the parameter format "cmp file1 file2 skip1 skip2" which is
  66 dnl accepted by cmp on some systems.
  67 AC_DEFUN([gcc_AC_PROG_CMP_IGNORE_INITIAL],
  68 [AC_CACHE_CHECK([for cmp's capabilities], gcc_cv_prog_cmp_skip,
  69 [ echo abfoo >t1
  70   echo cdfoo >t2
  71   gcc_cv_prog_cmp_skip=slowcompare
  72   if cmp --ignore-initial=2 t1 t2 > /dev/null 2>&1; then
  73     if cmp --ignore-initial=1 t1 t2 > /dev/null 2>&1; then
  74       :
  75     else
  76       gcc_cv_prog_cmp_skip=gnucompare
  77     fi
  78   fi
  79   if test $gcc_cv_prog_cmp_skip = slowcompare ; then
  80     if cmp t1 t2 2 2 > /dev/null 2>&1; then
  81       if cmp t1 t2 1 1 > /dev/null 2>&1; then
  82         :
  83       else
  84         gcc_cv_prog_cmp_skip=fastcompare
  85       fi
  86     fi
  87   fi
  88   rm t1 t2
  89 ])
  90 make_compare_target=$gcc_cv_prog_cmp_skip
  91 AC_SUBST(make_compare_target)
  92 ])
  93
  94 dnl See if the printf functions in libc support %p in format strings.
  95 AC_DEFUN([gcc_AC_FUNC_PRINTF_PTR],
  96 [AC_CACHE_CHECK(whether the printf functions support %p,
  97   gcc_cv_func_printf_ptr,
  98 [AC_TRY_RUN([#include <stdio.h>
  99
 100 int main()
 101 {
 102   char buf[64];
 103   char *p = buf, *q = NULL;
 104   sprintf(buf, "%p", p);
 105   sscanf(buf, "%p", &q);
 106   return (p != q);
 107 }], gcc_cv_func_printf_ptr=yes, gcc_cv_func_printf_ptr=no,
 108         gcc_cv_func_printf_ptr=no)
 109 rm -f core core.* *.core])
 110 if test $gcc_cv_func_printf_ptr = yes ; then
 111   AC_DEFINE(HAVE_PRINTF_PTR, 1, [Define if printf supports "%p".])
 112 fi
 113 ])
 114
 115 dnl See if symbolic links work and if not, try to substitute either hard links or simple copy.
 116 AC_DEFUN([gcc_AC_PROG_LN_S],
 117 [AC_MSG_CHECKING(whether ln -s works)
 118 AC_CACHE_VAL(gcc_cv_prog_LN_S,
 119 [rm -f conftestdata_t
 120 echo >conftestdata_f
 121 if ln -s conftestdata_f conftestdata_t 2>/dev/null
 122 then
 123   gcc_cv_prog_LN_S="ln -s"
 124 else
 125   if ln conftestdata_f conftestdata_t 2>/dev/null
 126   then
 127     gcc_cv_prog_LN_S=ln
 128   else
 129     if cp -p conftestdata_f conftestdata_t 2>/dev/null
 130     then
 131       gcc_cv_prog_LN_S="cp -p"
 132     else
 133       gcc_cv_prog_LN_S=cp
 134     fi
 135   fi
 136 fi
 137 rm -f conftestdata_f conftestdata_t
 138 ])dnl
 139 LN_S="$gcc_cv_prog_LN_S"
 140 if test "$gcc_cv_prog_LN_S" = "ln -s"; then
 141   AC_MSG_RESULT(yes)
 142 else
 143   if test "$gcc_cv_prog_LN_S" = "ln"; then
 144     AC_MSG_RESULT([no, using ln])
 145   else
 146     AC_MSG_RESULT([no, and neither does ln, so using $gcc_cv_prog_LN_S])
 147   fi
 148 fi
 149 AC_SUBST(LN_S)dnl
 150 ])
 151
 152 dnl Define MKDIR_TAKES_ONE_ARG if mkdir accepts only one argument instead
 153 dnl of the usual 2.
 154 AC_DEFUN([gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG],
 155 [AC_CACHE_CHECK([if mkdir takes one argument], gcc_cv_mkdir_takes_one_arg,
 156 [AC_TRY_COMPILE([
 157 #include <sys/types.h>
 158 #ifdef HAVE_SYS_STAT_H
 159 # include <sys/stat.h>
 160 #endif
 161 #ifdef HAVE_UNISTD_H
 162 # include <unistd.h>
 163 #endif
 164 #ifdef HAVE_DIRECT_H
 165 # include <direct.h>
 166 #endif], [mkdir ("foo", 0);],
 167         gcc_cv_mkdir_takes_one_arg=no, gcc_cv_mkdir_takes_one_arg=yes)])
 168 if test $gcc_cv_mkdir_takes_one_arg = yes ; then
 169   AC_DEFINE(MKDIR_TAKES_ONE_ARG, 1, [Define if host mkdir takes a single argument.])
 170 fi
 171 ])
 172
 173 AC_DEFUN([gcc_AC_PROG_INSTALL],
 174 [AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
 175 # Find a good install program.  We prefer a C program (faster),
 176 # so one script is as good as another.  But avoid the broken or
 177 # incompatible versions:
 178 # SysV /etc/install, /usr/sbin/install
 179 # SunOS /usr/etc/install
 180 # IRIX /sbin/install
 181 # AIX /bin/install
 182 # AFS /usr/afsws/bin/install, which mishandles nonexistent args
 183 # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
 184 # ./install, which can be erroneously created by make from ./install.sh.
 185 AC_MSG_CHECKING(for a BSD compatible install)
 186 if test -z "$INSTALL"; then
 187 AC_CACHE_VAL(ac_cv_path_install,
 188 [  IFS="${IFS=  }"; ac_save_IFS="$IFS"; IFS="${IFS}:"
 189   for ac_dir in $PATH; do
 190     # Account for people who put trailing slashes in PATH elements.
 191     case "$ac_dir/" in
 192     /|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;;
 193     *)
 194       # OSF1 and SCO ODT 3.0 have their own names for install.
 195       for ac_prog in ginstall scoinst install; do
 196         if test -f $ac_dir/$ac_prog; then
 197           if test $ac_prog = install &&
 198             grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then
 199             # AIX install.  It has an incompatible calling convention.
 200             # OSF/1 installbsd also uses dspmsg, but is usable.
 201             :
 202           else
 203             ac_cv_path_install="$ac_dir/$ac_prog -c"
 204             break 2
 205           fi
 206         fi
 207       done
 208       ;;
 209     esac
 210   done
 211   IFS="$ac_save_IFS"
 212 ])dnl
 213   if test "${ac_cv_path_install+set}" = set; then
 214     INSTALL="$ac_cv_path_install"
 215   else
 216     # As a last resort, use the slow shell script.  We don't cache a
 217     # path for INSTALL within a source directory, because that will
 218     # break other packages using the cache if that directory is
 219     # removed, or if the path is relative.
 220     INSTALL="$ac_install_sh"
 221   fi
 222 fi
 223 dnl We do special magic for INSTALL instead of AC_SUBST, to get
 224 dnl relative paths right.
 225 AC_MSG_RESULT($INSTALL)
 226 AC_SUBST(INSTALL)dnl
 227
 228 # Use test -z because SunOS4 sh mishandles braces in ${var-val}.
 229 # It thinks the first close brace ends the variable substitution.
 230 test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
 231 AC_SUBST(INSTALL_PROGRAM)dnl
 232
 233 test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
 234 AC_SUBST(INSTALL_DATA)dnl
 235 ])
 236
 237 # mmap(2) blacklisting.  Some platforms provide the mmap library routine
 238 # but don't support all of the features we need from it.
 239 AC_DEFUN([gcc_AC_FUNC_MMAP_BLACKLIST],
 240 [
 241 AC_CHECK_HEADER([sys/mman.h],
 242                 [gcc_header_sys_mman_h=yes], [gcc_header_sys_mman_h=no])
 243 AC_CHECK_FUNC([mmap], [gcc_func_mmap=yes], [gcc_func_mmap=no])
 244 if test "$gcc_header_sys_mman_h" != yes \
 245  || test "$gcc_func_mmap" != yes; then
 246    gcc_cv_func_mmap_file=no
 247    gcc_cv_func_mmap_dev_zero=no
 248    gcc_cv_func_mmap_anon=no
 249 else
 250    AC_CACHE_CHECK([whether read-only mmap of a plain file works],
 251   gcc_cv_func_mmap_file,
 252   [# Add a system to this blacklist if
 253    # mmap(0, stat_size, PROT_READ, MAP_PRIVATE, fd, 0) doesn't return a
 254    # memory area containing the same data that you'd get if you applied
 255    # read() to the same fd.  The only system known to have a problem here
 256    # is VMS, where text files have record structure.
 257    case "$host_os" in
 258      vms* | ultrix*)
 259         gcc_cv_func_mmap_file=no ;;
 260      *)
 261         gcc_cv_func_mmap_file=yes;;
 262    esac])
 263    AC_CACHE_CHECK([whether mmap from /dev/zero works],
 264   gcc_cv_func_mmap_dev_zero,
 265   [# Add a system to this blacklist if it has mmap() but /dev/zero
 266    # does not exist, or if mmapping /dev/zero does not give anonymous
 267    # zeroed pages with both the following properties:
 268    # 1. If you map N consecutive pages in with one call, and then
 269    #    unmap any subset of those pages, the pages that were not
 270    #    explicitly unmapped remain accessible.
 271    # 2. If you map two adjacent blocks of memory and then unmap them
 272    #    both at once, they must both go away.
 273    # Systems known to be in this category are Windows (all variants),
 274    # VMS, and Darwin.
 275    case "$host_os" in
 276      vms* | cygwin* | pe | mingw* | darwin* | ultrix* | hpux10* | hpux11.00)
 277         gcc_cv_func_mmap_dev_zero=no ;;
 278      *)
 279         gcc_cv_func_mmap_dev_zero=yes;;
 280    esac])
 281
 282    # Unlike /dev/zero, the MAP_ANON(YMOUS) defines can be probed for.
 283    AC_CACHE_CHECK([for MAP_ANON(YMOUS)], gcc_cv_decl_map_anon,
 284     [AC_TRY_COMPILE(
 285 [#include <sys/types.h>
 286 #include <sys/mman.h>
 287 #include <unistd.h>
 288
 289 #ifndef MAP_ANONYMOUS
 290 #define MAP_ANONYMOUS MAP_ANON
 291 #endif
 292 ],
 293 [int n = MAP_ANONYMOUS;],
 294     gcc_cv_decl_map_anon=yes,
 295     gcc_cv_decl_map_anon=no)])
 296
 297    if test $gcc_cv_decl_map_anon = no; then
 298      gcc_cv_func_mmap_anon=no
 299    else
 300      AC_CACHE_CHECK([whether mmap with MAP_ANON(YMOUS) works],
 301      gcc_cv_func_mmap_anon,
 302   [# Add a system to this blacklist if it has mmap() and MAP_ANON or
 303    # MAP_ANONYMOUS, but using mmap(..., MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
 304    # doesn't give anonymous zeroed pages with the same properties listed
 305    # above for use of /dev/zero.
 306    # Systems known to be in this category are Windows, VMS, and SCO Unix.
 307    case "$host_os" in
 308      vms* | cygwin* | pe | mingw* | sco* | udk* )
 309         gcc_cv_func_mmap_anon=no ;;
 310      *)
 311         gcc_cv_func_mmap_anon=yes;;
 312    esac])
 313    fi
 314 fi
 315
 316 if test $gcc_cv_func_mmap_file = yes; then
 317   AC_DEFINE(HAVE_MMAP_FILE, 1,
 318             [Define if read-only mmap of a plain file works.])
 319 fi
 320 if test $gcc_cv_func_mmap_dev_zero = yes; then
 321   AC_DEFINE(HAVE_MMAP_DEV_ZERO, 1,
 322             [Define if mmap of /dev/zero works.])
 323 fi
 324 if test $gcc_cv_func_mmap_anon = yes; then
 325   AC_DEFINE(HAVE_MMAP_ANON, 1,
 326             [Define if mmap with MAP_ANON(YMOUS) works.])
 327 fi
 328 ])
 329
 330 dnl Locate a program and check that its version is acceptable.
 331 dnl AC_PROG_CHECK_VER(var, name, version-switch,
 332 dnl                  version-extract-regexp, version-glob)
 333 AC_DEFUN([gcc_AC_CHECK_PROG_VER],
 334 [AC_CHECK_PROG([$1], [$2], [$2])
 335 if test -n "[$]$1"; then
 336   # Found it, now check the version.
 337   AC_CACHE_CHECK(for modern $2, gcc_cv_prog_$2_modern,
 338 [changequote(<<,>>)dnl
 339   ac_prog_version=`<<$>>$1 $3 2>&1 |
 340                    sed -n 's/^.*patsubst(<<$4>>,/,\/).*$/\1/p'`
 341 changequote([,])dnl
 342   echo "configure:__oline__: version of $2 is $ac_prog_version" >&AC_FD_CC
 343 changequote(<<,>>)dnl
 344   case $ac_prog_version in
 345     '')     gcc_cv_prog_$2_modern=no;;
 346     <<$5>>)
 347             gcc_cv_prog_$2_modern=yes;;
 348     *)      gcc_cv_prog_$2_modern=no;;
 349   esac
 350 changequote([,])dnl
 351 ])
 352 else
 353   gcc_cv_prog_$2_modern=no
 354 fi
 355 ])
 356
 357 dnl Determine if enumerated bitfields are unsigned.   ISO C says they can
 358 dnl be either signed or unsigned.
 359 dnl
 360 AC_DEFUN([gcc_AC_C_ENUM_BF_UNSIGNED],
 361 [AC_CACHE_CHECK(for unsigned enumerated bitfields, gcc_cv_enum_bf_unsigned,
 362 [AC_TRY_RUN(#include <stdlib.h>
 363 enum t { BLAH = 128 } ;
 364 struct s_t { enum t member : 8; } s ;
 365 int main(void)
 366 {
 367         s.member = BLAH;
 368         if (s.member < 0) exit(1);
 369         exit(0);
 370
 371 }, gcc_cv_enum_bf_unsigned=yes, gcc_cv_enum_bf_unsigned=no, gcc_cv_enum_bf_unsigned=yes)])
 372 if test $gcc_cv_enum_bf_unsigned = yes; then
 373   AC_DEFINE(ENUM_BITFIELDS_ARE_UNSIGNED, 1,
 374     [Define if enumerated bitfields are treated as unsigned values.])
 375 fi])
 376
 377 dnl Probe number of bits in a byte.
 378 dnl Note C89 requires CHAR_BIT >= 8.
 379 dnl
 380 AC_DEFUN([gcc_AC_C_CHAR_BIT],
 381 [AC_CACHE_CHECK(for CHAR_BIT, gcc_cv_decl_char_bit,
 382 [AC_EGREP_CPP(found,
 383 [#ifdef HAVE_LIMITS_H
 384 #include <limits.h>
 385 #endif
 386 #ifdef CHAR_BIT
 387 found
 388 #endif], gcc_cv_decl_char_bit=yes, gcc_cv_decl_char_bit=no)
 389 ])
 390 if test $gcc_cv_decl_char_bit = no; then
 391   AC_CACHE_CHECK(number of bits in a byte, gcc_cv_c_nbby,
 392 [i=8
 393  gcc_cv_c_nbby=
 394  while test $i -lt 65; do
 395    AC_TRY_COMPILE(,
 396      [switch(0) {
 397   case (unsigned char)((unsigned long)1 << $i) == ((unsigned long)1 << $i):
 398   case (unsigned char)((unsigned long)1<<($i-1)) == ((unsigned long)1<<($i-1)):
 399   ; }],
 400      [gcc_cv_c_nbby=$i; break])
 401    i=`expr $i + 1`
 402  done
 403  test -z "$gcc_cv_c_nbby" && gcc_cv_c_nbby=failed
 404 ])
 405 if test $gcc_cv_c_nbby = failed; then
 406   AC_MSG_ERROR(cannot determine number of bits in a byte)
 407 else
 408   AC_DEFINE_UNQUOTED(CHAR_BIT, $gcc_cv_c_nbby,
 409   [Define as the number of bits in a byte, if \`limits.h' doesn't.])
 410 fi
 411 fi])
 412
 413 dnl Checking for long long.
 414 dnl By Caolan McNamara <caolan@skynet.ie>
 415 dnl Added check for __int64, Zack Weinberg <zackw@stanford.edu>
 416 dnl
 417 AC_DEFUN([gcc_AC_C_LONG_LONG],
 418 [AC_CACHE_CHECK(for long long int, ac_cv_c_long_long,
 419   [AC_TRY_COMPILE(,[long long int i;],
 420          ac_cv_c_long_long=yes,
 421          ac_cv_c_long_long=no)])
 422   if test $ac_cv_c_long_long = yes; then
 423     AC_DEFINE(HAVE_LONG_LONG, 1,
 424       [Define if your compiler supports the \`long long' type.])
 425   fi
 426 AC_CACHE_CHECK(for __int64, ac_cv_c___int64,
 427   [AC_TRY_COMPILE(,[__int64 i;],
 428         ac_cv_c___int64=yes,
 429         ac_cv_c___int64=no)])
 430   if test $ac_cv_c___int64 = yes; then
 431     AC_DEFINE(HAVE___INT64, 1,
 432       [Define if your compiler supports the \`__int64' type.])
 433   fi
 434 ])
 435
 436 dnl From Bruno Haible.
 437
 438 AC_DEFUN([AM_LANGINFO_CODESET],
 439 [
 440   AC_CACHE_CHECK([for nl_langinfo and CODESET], am_cv_langinfo_codeset,
 441     [AC_TRY_LINK([#include <langinfo.h>],
 442       [char* cs = nl_langinfo(CODESET);],
 443       am_cv_langinfo_codeset=yes,
 444       am_cv_langinfo_codeset=no)
 445     ])
 446   if test $am_cv_langinfo_codeset = yes; then
 447     AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
 448       [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
 449   fi
 450 ])
 451
 452 AC_DEFUN([gcc_AC_INITFINI_ARRAY],
 453 [AC_ARG_ENABLE(initfini-array,
 454         [  --enable-initfini-array      use .init_array/.fini_array sections],
 455         [], [
 456 AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support,
 457                  gcc_cv_initfini_array, [dnl
 458   AC_TRY_RUN([
 459 static int x = -1;
 460 int main (void) { return x; }
 461 int foo (void) { x = 0; }
 462 int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;],
 463              [gcc_cv_initfini_array=yes], [gcc_cv_initfini_array=no],
 464              [gcc_cv_initfini_array=no])])
 465   enable_initfini_array=$gcc_cv_initfini_array
 466 ])
 467 if test $enable_initfini_array = yes; then
 468   AC_DEFINE(HAVE_INITFINI_ARRAY, 1,
 469     [Define .init_array/.fini_array sections are available and working.])
 470 fi])
 471
 472 dnl # _gcc_COMPUTE_GAS_VERSION
 473 dnl # Used by gcc_GAS_VERSION_GTE_IFELSE
 474 dnl #
 475 dnl # WARNING:
 476 dnl # gcc_cv_as_gas_srcdir must be defined before this.
 477 dnl # This gross requirement will go away eventually.
 478 AC_DEFUN([_gcc_COMPUTE_GAS_VERSION],
 479 [gcc_cv_as_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
 480 for f in $gcc_cv_as_bfd_srcdir/configure \
 481          $gcc_cv_as_gas_srcdir/configure \
 482          $gcc_cv_as_gas_srcdir/configure.in \
 483          $gcc_cv_as_gas_srcdir/Makefile.in ; do
 484   gcc_cv_gas_version=`sed -n -e 's/^[[  ]]*\(VERSION=[[0-9]]*\.[[0-9]]*.*\)/\1/p' < $f`
 485   if test x$gcc_cv_gas_version != x; then
 486     break
 487   fi
 488 done
 489 gcc_cv_gas_major_version=`expr "$gcc_cv_gas_version" : "VERSION=\([[0-9]]*\)"`
 490 gcc_cv_gas_minor_version=`expr "$gcc_cv_gas_version" : "VERSION=[[0-9]]*\.\([[0-9]]*\)"`
 491 gcc_cv_gas_patch_version=`expr "$gcc_cv_gas_version" : "VERSION=[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)"`
 492 case $gcc_cv_gas_patch_version in
 493   "") gcc_cv_gas_patch_version="0" ;;
 494 esac
 495 gcc_cv_gas_vers=`expr \( \( $gcc_cv_gas_major_version \* 1000 \) \
 496                             + $gcc_cv_gas_minor_version \) \* 1000 \
 497                             + $gcc_cv_gas_patch_version`
 498 ]) []dnl # _gcc_COMPUTE_GAS_VERSION
 499
 500 dnl # gcc_GAS_VERSION_GTE_IFELSE([elf,] major, minor, patchlevel,
 501 dnl #                     [command_if_true = :], [command_if_false = :])
 502 dnl # Check to see if the version of GAS is greater than or
 503 dnl # equal to the specified version.
 504 dnl #
 505 dnl # The first ifelse() shortens the shell code if the patchlevel
 506 dnl # is unimportant (the usual case).  The others handle missing
 507 dnl # commands.  Note that the tests are structured so that the most
 508 dnl # common version number cases are tested first.
 509 AC_DEFUN([_gcc_GAS_VERSION_GTE_IFELSE],
 510 [ifelse([$1], elf,
 511  [if test $in_tree_gas_is_elf = yes \
 512   &&],
 513  [if]) test $gcc_cv_gas_vers -ge `expr \( \( $2 \* 1000 \) + $3 \) \* 1000 + $4`
 514   then dnl
 515 ifelse([$5],,:,[$5])[]dnl
 516 ifelse([$6],,,[
 517   else $6])
 518 fi])
 519
 520 AC_DEFUN([gcc_GAS_VERSION_GTE_IFELSE],
 521 [AC_REQUIRE([_gcc_COMPUTE_GAS_VERSION])dnl
 522 ifelse([$1], elf, [_gcc_GAS_VERSION_GTE_IFELSE($@)],
 523                   [_gcc_GAS_VERSION_GTE_IFELSE(,$@)])])
 524
 525 dnl gcc_GAS_CHECK_FEATURE(description, cv, [[elf,]major,minor,patchlevel],
 526 dnl [extra switches to as], [assembler input],
 527 dnl [extra testing logic], [command if feature available])
 528 dnl
 529 dnl Checks for an assembler feature.  If we are building an in-tree
 530 dnl gas, the feature is available if the associated assembler version
 531 dnl is greater than or equal to major.minor.patchlevel.  If not, then
 532 dnl ASSEMBLER INPUT is fed to the assembler and the feature is available
 533 dnl if assembly succeeds.  If EXTRA TESTING LOGIC is not the empty string,
 534 dnl then it is run instead of simply setting CV to "yes" - it is responsible
 535 dnl for doing so, if appropriate.
 536 AC_DEFUN([gcc_GAS_CHECK_FEATURE],
 537 [AC_CACHE_CHECK([assembler for $1], [$2],
 538  [[$2]=no
 539   ifelse([$3],,,[dnl
 540   if test $in_tree_gas = yes; then
 541     gcc_GAS_VERSION_GTE_IFELSE($3, [[$2]=yes])
 542   el])if test x$gcc_cv_as != x; then
 543     echo ifelse(m4_substr([$5],0,1),[$], "[$5]", '[$5]') > conftest.s
 544     if AC_TRY_COMMAND([$gcc_cv_as $4 -o conftest.o conftest.s >&AC_FD_CC])
 545     then
 546         ifelse([$6],, [$2]=yes, [$6])
 547     else
 548       echo "configure: failed program was" >&AC_FD_CC
 549       cat conftest.s >&AC_FD_CC
 550     fi
 551     rm -f conftest.o conftest.s
 552   fi])
 553 ifelse([$7],,,[dnl
 554 if test $[$2] = yes; then
 555   $7
 556 fi])])
 557
 558 # AM_PROG_CC_C_O
 559 # --------------
 560 # Like AC_PROG_CC_C_O, but changed for automake.
 561
 562 # Copyright (C) 1999, 2000, 2001, 2003 Free Software Foundation, Inc.
 563
 564 # This program is free software; you can redistribute it and/or modify
 565 # it under the terms of the GNU General Public License as published by
 566 # the Free Software Foundation; either version 2, or (at your option)
 567 # any later version.
 568
 569 # This program is distributed in the hope that it will be useful,
 570 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 571 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 572 # GNU General Public License for more details.
 573
 574 # You should have received a copy of the GNU General Public License
 575 # along with this program; if not, write to the Free Software
 576 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 577 # 02111-1307, USA.
 578
 579 AC_DEFUN([AM_PROG_CC_C_O],
 580 [AC_REQUIRE([AC_PROG_CC_C_O])dnl
 581 AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
 582 # FIXME: we rely on the cache variable name because
 583 # there is no other way.
 584 set dummy $CC
 585 ac_cc=`echo $[2] | sed ['s/[^a-zA-Z0-9_]/_/g;s/^[0-9]/_/']`
 586 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" != yes"; then
 587    # Losing compiler, so override with the script.
 588    # FIXME: It is wrong to rewrite CC.
 589    # But if we don't then we get into trouble of one sort or another.
 590    # A longer-term fix would be to have automake use am__CC in this case,
 591    # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
 592    CC="$am_aux_dir/compile $CC"
 593 fi
 594 ])
 595
 596 # AM_AUX_DIR_EXPAND
 597
 598 # Copyright (C) 2001, 2003 Free Software Foundation, Inc.
 599
 600 # This program is free software; you can redistribute it and/or modify
 601 # it under the terms of the GNU General Public License as published by
 602 # the Free Software Foundation; either version 2, or (at your option)
 603 # any later version.
 604
 605 # This program is distributed in the hope that it will be useful,
 606 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 607 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 608 # GNU General Public License for more details.
 609
 610 # You should have received a copy of the GNU General Public License
 611 # along with this program; if not, write to the Free Software
 612 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 613 # 02111-1307, USA.
 614
 615 # For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
 616 # $ac_aux_dir to `$srcdir/foo'.  In other projects, it is set to
 617 # `$srcdir', `$srcdir/..', or `$srcdir/../..'.
 618 #
 619 # Of course, Automake must honor this variable whenever it calls a
 620 # tool from the auxiliary directory.  The problem is that $srcdir (and
 621 # therefore $ac_aux_dir as well) can be either absolute or relative,
 622 # depending on how configure is run.  This is pretty annoying, since
 623 # it makes $ac_aux_dir quite unusable in subdirectories: in the top
 624 # source directory, any form will work fine, but in subdirectories a
 625 # relative path needs to be adjusted first.
 626 #
 627 # $ac_aux_dir/missing
 628 #    fails when called from a subdirectory if $ac_aux_dir is relative
 629 # $top_srcdir/$ac_aux_dir/missing
 630 #    fails if $ac_aux_dir is absolute,
 631 #    fails when called from a subdirectory in a VPATH build with
 632 #          a relative $ac_aux_dir
 633 #
 634 # The reason of the latter failure is that $top_srcdir and $ac_aux_dir
 635 # are both prefixed by $srcdir.  In an in-source build this is usually
 636 # harmless because $srcdir is `.', but things will broke when you
 637 # start a VPATH build or use an absolute $srcdir.
 638 #
 639 # So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
 640 # iff we strip the leading $srcdir from $ac_aux_dir.  That would be:
 641 #   am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
 642 # and then we would define $MISSING as
 643 #   MISSING="\${SHELL} $am_aux_dir/missing"
 644 # This will work as long as MISSING is not called from configure, because
 645 # unfortunately $(top_srcdir) has no meaning in configure.
 646 # However there are other variables, like CC, which are often used in
 647 # configure, and could therefore not use this "fixed" $ac_aux_dir.
 648 #
 649 # Another solution, used here, is to always expand $ac_aux_dir to an
 650 # absolute PATH.  The drawback is that using absolute paths prevent a
 651 # configured tree to be moved without reconfiguration.
 652
 653 AC_DEFUN([AM_AUX_DIR_EXPAND],
 654 [dnl Rely on autoconf to set up CDPATH properly.
 655 AC_PREREQ([2.50])dnl
 656 # expand $ac_aux_dir to an absolute path
 657 am_aux_dir=`cd $ac_aux_dir && pwd`
 658 ])