gcc/aclocal.m4

   1 m4_include([../config/acx.m4])
   2 m4_include([../config/gettext-sister.m4])
   3 m4_include([../config/iconv.m4])
   4 m4_include([../config/lcmessage.m4])
   5 m4_include([../config/lib-ld.m4])
   6 m4_include([../config/lib-link.m4])
   7 m4_include([../config/lib-prefix.m4])
   8 m4_include([../config/progtest.m4])
   9
  10 dnl See whether we need a declaration for a function.
  11 dnl The result is highly dependent on the INCLUDES passed in, so make sure
  12 dnl to use a different cache variable name in this macro if it is invoked
  13 dnl in a different context somewhere else.
  14 dnl gcc_AC_CHECK_DECL(SYMBOL,
  15 dnl     [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND [, INCLUDES]]])
  16 AC_DEFUN([gcc_AC_CHECK_DECL],
  17 [AC_MSG_CHECKING([whether $1 is declared])
  18 AC_CACHE_VAL(gcc_cv_have_decl_$1,
  19 [AC_TRY_COMPILE([$4],
  20 [#ifndef $1
  21 char *(*pfn) = (char *(*)) $1 ;
  22 #endif], eval "gcc_cv_have_decl_$1=yes", eval "gcc_cv_have_decl_$1=no")])
  23 if eval "test \"`echo '$gcc_cv_have_decl_'$1`\" = yes"; then
  24   AC_MSG_RESULT(yes) ; ifelse([$2], , :, [$2])
  25 else
  26   AC_MSG_RESULT(no) ; ifelse([$3], , :, [$3])
  27 fi
  28 ])dnl
  29
  30 dnl Check multiple functions to see whether each needs a declaration.
  31 dnl Arrange to define HAVE_DECL_<FUNCTION> to 0 or 1 as appropriate.
  32 dnl gcc_AC_CHECK_DECLS(SYMBOLS,
  33 dnl     [ACTION-IF-NEEDED [, ACTION-IF-NOT-NEEDED [, INCLUDES]]])
  34 AC_DEFUN([gcc_AC_CHECK_DECLS],
  35 [AC_FOREACH([gcc_AC_Func], [$1],
  36   [AH_TEMPLATE(AS_TR_CPP(HAVE_DECL_[]gcc_AC_Func),
  37   [Define to 1 if we found a declaration for ']gcc_AC_Func[', otherwise
  38    define to 0.])])dnl
  39 for ac_func in $1
  40 do
  41   ac_tr_decl=AS_TR_CPP([HAVE_DECL_$ac_func])
  42 gcc_AC_CHECK_DECL($ac_func,
  43   [AC_DEFINE_UNQUOTED($ac_tr_decl, 1) $2],
  44   [AC_DEFINE_UNQUOTED($ac_tr_decl, 0) $3],
  45 dnl It is possible that the include files passed in here are local headers
  46 dnl which supply a backup declaration for the relevant prototype based on
  47 dnl the definition of (or lack of) the HAVE_DECL_ macro.  If so, this test
  48 dnl will always return success.  E.g. see libiberty.h's handling of
  49 dnl `basename'.  To avoid this, we define the relevant HAVE_DECL_ macro to
  50 dnl 1 so that any local headers used do not provide their own prototype
  51 dnl during this test.
  52 #undef $ac_tr_decl
  53 #define $ac_tr_decl 1
  54   $4
  55 )
  56 done
  57 ])
  58
  59 dnl 'make compare' can be significantly faster, if cmp itself can
  60 dnl skip bytes instead of using tail.  The test being performed is
  61 dnl "if cmp --ignore-initial=2 t1 t2 && ! cmp --ignore-initial=1 t1 t2"
  62 dnl but we need to sink errors and handle broken shells.  We also test
  63 dnl for the parameter format "cmp file1 file2 skip1 skip2" which is
  64 dnl accepted by cmp on some systems.
  65 AC_DEFUN([gcc_AC_PROG_CMP_IGNORE_INITIAL],
  66 [AC_CACHE_CHECK([for cmp's capabilities], gcc_cv_prog_cmp_skip,
  67 [ echo abfoo >t1
  68   echo cdfoo >t2
  69   gcc_cv_prog_cmp_skip=slowcompare
  70   if cmp --ignore-initial=2 t1 t2 > /dev/null 2>&1; then
  71     if cmp --ignore-initial=1 t1 t2 > /dev/null 2>&1; then
  72       :
  73     else
  74       gcc_cv_prog_cmp_skip=gnucompare
  75     fi
  76   fi
  77   if test $gcc_cv_prog_cmp_skip = slowcompare ; then
  78     if cmp t1 t2 2 2 > /dev/null 2>&1; then
  79       if cmp t1 t2 1 1 > /dev/null 2>&1; then
  80         :
  81       else
  82         gcc_cv_prog_cmp_skip=fastcompare
  83       fi
  84     fi
  85   fi
  86   rm t1 t2
  87 ])
  88 make_compare_target=$gcc_cv_prog_cmp_skip
  89 AC_SUBST(make_compare_target)
  90 ])
  91
  92 dnl See if the printf functions in libc support %p in format strings.
  93 AC_DEFUN([gcc_AC_FUNC_PRINTF_PTR],
  94 [AC_CACHE_CHECK(whether the printf functions support %p,
  95   gcc_cv_func_printf_ptr,
  96 [AC_TRY_RUN([#include <stdio.h>
  97
  98 int main()
  99 {
 100   char buf[64];
 101   char *p = buf, *q = NULL;
 102   sprintf(buf, "%p", p);
 103   sscanf(buf, "%p", &q);
 104   return (p != q);
 105 }], gcc_cv_func_printf_ptr=yes, gcc_cv_func_printf_ptr=no,
 106         gcc_cv_func_printf_ptr=no)
 107 rm -f core core.* *.core])
 108 if test $gcc_cv_func_printf_ptr = yes ; then
 109   AC_DEFINE(HAVE_PRINTF_PTR, 1, [Define if printf supports "%p".])
 110 fi
 111 ])
 112
 113 dnl See if symbolic links work and if not, try to substitute either hard links or simple copy.
 114 AC_DEFUN([gcc_AC_PROG_LN_S],
 115 [AC_MSG_CHECKING(whether ln -s works)
 116 AC_CACHE_VAL(gcc_cv_prog_LN_S,
 117 [rm -f conftestdata_t
 118 echo >conftestdata_f
 119 if ln -s conftestdata_f conftestdata_t 2>/dev/null
 120 then
 121   gcc_cv_prog_LN_S="ln -s"
 122 else
 123   if ln conftestdata_f conftestdata_t 2>/dev/null
 124   then
 125     gcc_cv_prog_LN_S=ln
 126   else
 127     if cp -p conftestdata_f conftestdata_t 2>/dev/null
 128     then
 129       gcc_cv_prog_LN_S="cp -p"
 130     else
 131       gcc_cv_prog_LN_S=cp
 132     fi
 133   fi
 134 fi
 135 rm -f conftestdata_f conftestdata_t
 136 ])dnl
 137 LN_S="$gcc_cv_prog_LN_S"
 138 if test "$gcc_cv_prog_LN_S" = "ln -s"; then
 139   AC_MSG_RESULT(yes)
 140 else
 141   if test "$gcc_cv_prog_LN_S" = "ln"; then
 142     AC_MSG_RESULT([no, using ln])
 143   else
 144     AC_MSG_RESULT([no, and neither does ln, so using $gcc_cv_prog_LN_S])
 145   fi
 146 fi
 147 AC_SUBST(LN_S)dnl
 148 ])
 149
 150 dnl Define MKDIR_TAKES_ONE_ARG if mkdir accepts only one argument instead
 151 dnl of the usual 2.
 152 AC_DEFUN([gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG],
 153 [AC_CACHE_CHECK([if mkdir takes one argument], gcc_cv_mkdir_takes_one_arg,
 154 [AC_TRY_COMPILE([
 155 #include <sys/types.h>
 156 #ifdef HAVE_SYS_STAT_H
 157 # include <sys/stat.h>
 158 #endif
 159 #ifdef HAVE_UNISTD_H
 160 # include <unistd.h>
 161 #endif
 162 #ifdef HAVE_DIRECT_H
 163 # include <direct.h>
 164 #endif], [mkdir ("foo", 0);],
 165         gcc_cv_mkdir_takes_one_arg=no, gcc_cv_mkdir_takes_one_arg=yes)])
 166 if test $gcc_cv_mkdir_takes_one_arg = yes ; then
 167   AC_DEFINE(MKDIR_TAKES_ONE_ARG, 1, [Define if host mkdir takes a single argument.])
 168 fi
 169 ])
 170
 171 AC_DEFUN([gcc_AC_PROG_INSTALL],
 172 [AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
 173 # Find a good install program.  We prefer a C program (faster),
 174 # so one script is as good as another.  But avoid the broken or
 175 # incompatible versions:
 176 # SysV /etc/install, /usr/sbin/install
 177 # SunOS /usr/etc/install
 178 # IRIX /sbin/install
 179 # AIX /bin/install
 180 # AFS /usr/afsws/bin/install, which mishandles nonexistent args
 181 # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
 182 # ./install, which can be erroneously created by make from ./install.sh.
 183 AC_MSG_CHECKING(for a BSD compatible install)
 184 if test -z "$INSTALL"; then
 185 AC_CACHE_VAL(ac_cv_path_install,
 186 [  IFS="${IFS=  }"; ac_save_IFS="$IFS"; IFS="${IFS}:"
 187   for ac_dir in $PATH; do
 188     # Account for people who put trailing slashes in PATH elements.
 189     case "$ac_dir/" in
 190     /|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;;
 191     *)
 192       # OSF1 and SCO ODT 3.0 have their own names for install.
 193       for ac_prog in ginstall scoinst install; do
 194         if test -f $ac_dir/$ac_prog; then
 195           if test $ac_prog = install &&
 196             grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then
 197             # AIX install.  It has an incompatible calling convention.
 198             # OSF/1 installbsd also uses dspmsg, but is usable.
 199             :
 200           else
 201             ac_cv_path_install="$ac_dir/$ac_prog -c"
 202             break 2
 203           fi
 204         fi
 205       done
 206       ;;
 207     esac
 208   done
 209   IFS="$ac_save_IFS"
 210 ])dnl
 211   if test "${ac_cv_path_install+set}" = set; then
 212     INSTALL="$ac_cv_path_install"
 213   else
 214     # As a last resort, use the slow shell script.  We don't cache a
 215     # path for INSTALL within a source directory, because that will
 216     # break other packages using the cache if that directory is
 217     # removed, or if the path is relative.
 218     INSTALL="$ac_install_sh"
 219   fi
 220 fi
 221 dnl We do special magic for INSTALL instead of AC_SUBST, to get
 222 dnl relative paths right.
 223 AC_MSG_RESULT($INSTALL)
 224 AC_SUBST(INSTALL)dnl
 225
 226 # Use test -z because SunOS4 sh mishandles braces in ${var-val}.
 227 # It thinks the first close brace ends the variable substitution.
 228 test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
 229 AC_SUBST(INSTALL_PROGRAM)dnl
 230
 231 test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
 232 AC_SUBST(INSTALL_DATA)dnl
 233 ])
 234
 235 # mmap(2) blacklisting.  Some platforms provide the mmap library routine
 236 # but don't support all of the features we need from it.
 237 AC_DEFUN([gcc_AC_FUNC_MMAP_BLACKLIST],
 238 [
 239 AC_CHECK_HEADER([sys/mman.h],
 240                 [gcc_header_sys_mman_h=yes], [gcc_header_sys_mman_h=no])
 241 AC_CHECK_FUNC([mmap], [gcc_func_mmap=yes], [gcc_func_mmap=no])
 242 if test "$gcc_header_sys_mman_h" != yes \
 243  || test "$gcc_func_mmap" != yes; then
 244    gcc_cv_func_mmap_file=no
 245    gcc_cv_func_mmap_dev_zero=no
 246    gcc_cv_func_mmap_anon=no
 247 else
 248    AC_CACHE_CHECK([whether read-only mmap of a plain file works],
 249   gcc_cv_func_mmap_file,
 250   [# Add a system to this blacklist if
 251    # mmap(0, stat_size, PROT_READ, MAP_PRIVATE, fd, 0) doesn't return a
 252    # memory area containing the same data that you'd get if you applied
 253    # read() to the same fd.  The only system known to have a problem here
 254    # is VMS, where text files have record structure.
 255    case "$host_os" in
 256      vms* | ultrix*)
 257         gcc_cv_func_mmap_file=no ;;
 258      *)
 259         gcc_cv_func_mmap_file=yes;;
 260    esac])
 261    AC_CACHE_CHECK([whether mmap from /dev/zero works],
 262   gcc_cv_func_mmap_dev_zero,
 263   [# Add a system to this blacklist if it has mmap() but /dev/zero
 264    # does not exist, or if mmapping /dev/zero does not give anonymous
 265    # zeroed pages with both the following properties:
 266    # 1. If you map N consecutive pages in with one call, and then
 267    #    unmap any subset of those pages, the pages that were not
 268    #    explicitly unmapped remain accessible.
 269    # 2. If you map two adjacent blocks of memory and then unmap them
 270    #    both at once, they must both go away.
 271    # Systems known to be in this category are Windows (all variants),
 272    # VMS, and Darwin.
 273    case "$host_os" in
 274      vms* | cygwin* | pe | mingw* | darwin* | ultrix* | hpux10* | hpux11.00)
 275         gcc_cv_func_mmap_dev_zero=no ;;
 276      *)
 277         gcc_cv_func_mmap_dev_zero=yes;;
 278    esac])
 279
 280    # Unlike /dev/zero, the MAP_ANON(YMOUS) defines can be probed for.
 281    AC_CACHE_CHECK([for MAP_ANON(YMOUS)], gcc_cv_decl_map_anon,
 282     [AC_TRY_COMPILE(
 283 [#include <sys/types.h>
 284 #include <sys/mman.h>
 285 #include <unistd.h>
 286
 287 #ifndef MAP_ANONYMOUS
 288 #define MAP_ANONYMOUS MAP_ANON
 289 #endif
 290 ],
 291 [int n = MAP_ANONYMOUS;],
 292     gcc_cv_decl_map_anon=yes,
 293     gcc_cv_decl_map_anon=no)])
 294
 295    if test $gcc_cv_decl_map_anon = no; then
 296      gcc_cv_func_mmap_anon=no
 297    else
 298      AC_CACHE_CHECK([whether mmap with MAP_ANON(YMOUS) works],
 299      gcc_cv_func_mmap_anon,
 300   [# Add a system to this blacklist if it has mmap() and MAP_ANON or
 301    # MAP_ANONYMOUS, but using mmap(..., MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
 302    # doesn't give anonymous zeroed pages with the same properties listed
 303    # above for use of /dev/zero.
 304    # Systems known to be in this category are Windows, VMS, and SCO Unix.
 305    case "$host_os" in
 306      vms* | cygwin* | pe | mingw* | sco* | udk* )
 307         gcc_cv_func_mmap_anon=no ;;
 308      *)
 309         gcc_cv_func_mmap_anon=yes;;
 310    esac])
 311    fi
 312 fi
 313
 314 if test $gcc_cv_func_mmap_file = yes; then
 315   AC_DEFINE(HAVE_MMAP_FILE, 1,
 316             [Define if read-only mmap of a plain file works.])
 317 fi
 318 if test $gcc_cv_func_mmap_dev_zero = yes; then
 319   AC_DEFINE(HAVE_MMAP_DEV_ZERO, 1,
 320             [Define if mmap of /dev/zero works.])
 321 fi
 322 if test $gcc_cv_func_mmap_anon = yes; then
 323   AC_DEFINE(HAVE_MMAP_ANON, 1,
 324             [Define if mmap with MAP_ANON(YMOUS) works.])
 325 fi
 326 ])
 327
 328 dnl Locate a program and check that its version is acceptable.
 329 dnl AC_PROG_CHECK_VER(var, name, version-switch,
 330 dnl                  version-extract-regexp, version-glob)
 331 AC_DEFUN([gcc_AC_CHECK_PROG_VER],
 332 [AC_CHECK_PROG([$1], [$2], [$2])
 333 if test -n "[$]$1"; then
 334   # Found it, now check the version.
 335   AC_CACHE_CHECK(for modern $2, gcc_cv_prog_$2_modern,
 336 [changequote(<<,>>)dnl
 337   ac_prog_version=`<<$>>$1 $3 2>&1 |
 338                    sed -n 's/^.*patsubst(<<$4>>,/,\/).*$/\1/p'`
 339 changequote([,])dnl
 340   echo "configure:__oline__: version of $2 is $ac_prog_version" >&AC_FD_CC
 341 changequote(<<,>>)dnl
 342   case $ac_prog_version in
 343     '')     gcc_cv_prog_$2_modern=no;;
 344     <<$5>>)
 345             gcc_cv_prog_$2_modern=yes;;
 346     *)      gcc_cv_prog_$2_modern=no;;
 347   esac
 348 changequote([,])dnl
 349 ])
 350 else
 351   gcc_cv_prog_$2_modern=no
 352 fi
 353 ])
 354
 355 dnl Determine if enumerated bitfields are unsigned.   ISO C says they can
 356 dnl be either signed or unsigned.
 357 dnl
 358 AC_DEFUN([gcc_AC_C_ENUM_BF_UNSIGNED],
 359 [AC_CACHE_CHECK(for unsigned enumerated bitfields, gcc_cv_enum_bf_unsigned,
 360 [AC_TRY_RUN(#include <stdlib.h>
 361 enum t { BLAH = 128 } ;
 362 struct s_t { enum t member : 8; } s ;
 363 int main(void)
 364 {
 365         s.member = BLAH;
 366         if (s.member < 0) exit(1);
 367         exit(0);
 368
 369 }, gcc_cv_enum_bf_unsigned=yes, gcc_cv_enum_bf_unsigned=no, gcc_cv_enum_bf_unsigned=yes)])
 370 if test $gcc_cv_enum_bf_unsigned = yes; then
 371   AC_DEFINE(ENUM_BITFIELDS_ARE_UNSIGNED, 1,
 372     [Define if enumerated bitfields are treated as unsigned values.])
 373 fi])
 374
 375 dnl Probe number of bits in a byte.
 376 dnl Note C89 requires CHAR_BIT >= 8.
 377 dnl
 378 AC_DEFUN([gcc_AC_C_CHAR_BIT],
 379 [AC_CACHE_CHECK(for CHAR_BIT, gcc_cv_decl_char_bit,
 380 [AC_EGREP_CPP(found,
 381 [#ifdef HAVE_LIMITS_H
 382 #include <limits.h>
 383 #endif
 384 #ifdef CHAR_BIT
 385 found
 386 #endif], gcc_cv_decl_char_bit=yes, gcc_cv_decl_char_bit=no)
 387 ])
 388 if test $gcc_cv_decl_char_bit = no; then
 389   AC_CACHE_CHECK(number of bits in a byte, gcc_cv_c_nbby,
 390 [i=8
 391  gcc_cv_c_nbby=
 392  while test $i -lt 65; do
 393    AC_TRY_COMPILE(,
 394      [switch(0) {
 395   case (unsigned char)((unsigned long)1 << $i) == ((unsigned long)1 << $i):
 396   case (unsigned char)((unsigned long)1<<($i-1)) == ((unsigned long)1<<($i-1)):
 397   ; }],
 398      [gcc_cv_c_nbby=$i; break])
 399    i=`expr $i + 1`
 400  done
 401  test -z "$gcc_cv_c_nbby" && gcc_cv_c_nbby=failed
 402 ])
 403 if test $gcc_cv_c_nbby = failed; then
 404   AC_MSG_ERROR(cannot determine number of bits in a byte)
 405 else
 406   AC_DEFINE_UNQUOTED(CHAR_BIT, $gcc_cv_c_nbby,
 407   [Define as the number of bits in a byte, if \`limits.h' doesn't.])
 408 fi
 409 fi])
 410
 411 dnl From Bruno Haible.
 412
 413 AC_DEFUN([AM_LANGINFO_CODESET],
 414 [
 415   AC_CACHE_CHECK([for nl_langinfo and CODESET], am_cv_langinfo_codeset,
 416     [AC_TRY_LINK([#include <langinfo.h>],
 417       [char* cs = nl_langinfo(CODESET);],
 418       am_cv_langinfo_codeset=yes,
 419       am_cv_langinfo_codeset=no)
 420     ])
 421   if test $am_cv_langinfo_codeset = yes; then
 422     AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
 423       [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
 424   fi
 425 ])
 426
 427 AC_DEFUN([gcc_AC_INITFINI_ARRAY],
 428 [AC_ARG_ENABLE(initfini-array,
 429         [  --enable-initfini-array      use .init_array/.fini_array sections],
 430         [], [
 431 AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support,
 432                  gcc_cv_initfini_array, [dnl
 433   AC_TRY_RUN([
 434 static int x = -1;
 435 int main (void) { return x; }
 436 int foo (void) { x = 0; }
 437 int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;],
 438              [gcc_cv_initfini_array=yes], [gcc_cv_initfini_array=no],
 439              [gcc_cv_initfini_array=no])])
 440   enable_initfini_array=$gcc_cv_initfini_array
 441 ])
 442 if test $enable_initfini_array = yes; then
 443   AC_DEFINE(HAVE_INITFINI_ARRAY, 1,
 444     [Define .init_array/.fini_array sections are available and working.])
 445 fi])
 446
 447 dnl # _gcc_COMPUTE_GAS_VERSION
 448 dnl # Used by gcc_GAS_VERSION_GTE_IFELSE
 449 dnl #
 450 dnl # WARNING:
 451 dnl # gcc_cv_as_gas_srcdir must be defined before this.
 452 dnl # This gross requirement will go away eventually.
 453 AC_DEFUN([_gcc_COMPUTE_GAS_VERSION],
 454 [gcc_cv_as_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
 455 for f in $gcc_cv_as_bfd_srcdir/configure \
 456          $gcc_cv_as_gas_srcdir/configure \
 457          $gcc_cv_as_gas_srcdir/configure.in \
 458          $gcc_cv_as_gas_srcdir/Makefile.in ; do
 459   gcc_cv_gas_version=`sed -n -e 's/^[[  ]]*\(VERSION=[[0-9]]*\.[[0-9]]*.*\)/\1/p' < $f`
 460   if test x$gcc_cv_gas_version != x; then
 461     break
 462   fi
 463 done
 464 gcc_cv_gas_major_version=`expr "$gcc_cv_gas_version" : "VERSION=\([[0-9]]*\)"`
 465 gcc_cv_gas_minor_version=`expr "$gcc_cv_gas_version" : "VERSION=[[0-9]]*\.\([[0-9]]*\)"`
 466 gcc_cv_gas_patch_version=`expr "$gcc_cv_gas_version" : "VERSION=[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)"`
 467 case $gcc_cv_gas_patch_version in
 468   "") gcc_cv_gas_patch_version="0" ;;
 469 esac
 470 gcc_cv_gas_vers=`expr \( \( $gcc_cv_gas_major_version \* 1000 \) \
 471                             + $gcc_cv_gas_minor_version \) \* 1000 \
 472                             + $gcc_cv_gas_patch_version`
 473 ]) []dnl # _gcc_COMPUTE_GAS_VERSION
 474
 475 dnl # gcc_GAS_VERSION_GTE_IFELSE([elf,] major, minor, patchlevel,
 476 dnl #                     [command_if_true = :], [command_if_false = :])
 477 dnl # Check to see if the version of GAS is greater than or
 478 dnl # equal to the specified version.
 479 dnl #
 480 dnl # The first ifelse() shortens the shell code if the patchlevel
 481 dnl # is unimportant (the usual case).  The others handle missing
 482 dnl # commands.  Note that the tests are structured so that the most
 483 dnl # common version number cases are tested first.
 484 AC_DEFUN([_gcc_GAS_VERSION_GTE_IFELSE],
 485 [ifelse([$1], elf,
 486  [if test $in_tree_gas_is_elf = yes \
 487   &&],
 488  [if]) test $gcc_cv_gas_vers -ge `expr \( \( $2 \* 1000 \) + $3 \) \* 1000 + $4`
 489   then dnl
 490 ifelse([$5],,:,[$5])[]dnl
 491 ifelse([$6],,,[
 492   else $6])
 493 fi])
 494
 495 AC_DEFUN([gcc_GAS_VERSION_GTE_IFELSE],
 496 [AC_REQUIRE([_gcc_COMPUTE_GAS_VERSION])dnl
 497 ifelse([$1], elf, [_gcc_GAS_VERSION_GTE_IFELSE($@)],
 498                   [_gcc_GAS_VERSION_GTE_IFELSE(,$@)])])
 499
 500 dnl gcc_GAS_CHECK_FEATURE(description, cv, [[elf,]major,minor,patchlevel],
 501 dnl [extra switches to as], [assembler input],
 502 dnl [extra testing logic], [command if feature available])
 503 dnl
 504 dnl Checks for an assembler feature.  If we are building an in-tree
 505 dnl gas, the feature is available if the associated assembler version
 506 dnl is greater than or equal to major.minor.patchlevel.  If not, then
 507 dnl ASSEMBLER INPUT is fed to the assembler and the feature is available
 508 dnl if assembly succeeds.  If EXTRA TESTING LOGIC is not the empty string,
 509 dnl then it is run instead of simply setting CV to "yes" - it is responsible
 510 dnl for doing so, if appropriate.
 511 AC_DEFUN([gcc_GAS_CHECK_FEATURE],
 512 [AC_CACHE_CHECK([assembler for $1], [$2],
 513  [[$2]=no
 514   ifelse([$3],,,[dnl
 515   if test $in_tree_gas = yes; then
 516     gcc_GAS_VERSION_GTE_IFELSE($3, [[$2]=yes])
 517   el])if test x$gcc_cv_as != x; then
 518     echo ifelse(m4_substr([$5],0,1),[$], "[$5]", '[$5]') > conftest.s
 519     if AC_TRY_COMMAND([$gcc_cv_as $4 -o conftest.o conftest.s >&AC_FD_CC])
 520     then
 521         ifelse([$6],, [$2]=yes, [$6])
 522     else
 523       echo "configure: failed program was" >&AC_FD_CC
 524       cat conftest.s >&AC_FD_CC
 525     fi
 526     rm -f conftest.o conftest.s
 527   fi])
 528 ifelse([$7],,,[dnl
 529 if test $[$2] = yes; then
 530   $7
 531 fi])])
 532
 533 # AM_PROG_CC_C_O
 534 # --------------
 535 # Like AC_PROG_CC_C_O, but changed for automake.
 536
 537 # Copyright (C) 1999, 2000, 2001, 2003 Free Software Foundation, Inc.
 538
 539 # This program is free software; you can redistribute it and/or modify
 540 # it under the terms of the GNU General Public License as published by
 541 # the Free Software Foundation; either version 2, or (at your option)
 542 # any later version.
 543
 544 # This program is distributed in the hope that it will be useful,
 545 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 546 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 547 # GNU General Public License for more details.
 548
 549 # You should have received a copy of the GNU General Public License
 550 # along with this program; if not, write to the Free Software
 551 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 552 # 02111-1307, USA.
 553
 554 AC_DEFUN([AM_PROG_CC_C_O],
 555 [AC_REQUIRE([AC_PROG_CC_C_O])dnl
 556 AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
 557 # FIXME: we rely on the cache variable name because
 558 # there is no other way.
 559 set dummy $CC
 560 ac_cc=`echo $[2] | sed ['s/[^a-zA-Z0-9_]/_/g;s/^[0-9]/_/']`
 561 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" != yes"; then
 562    # Losing compiler, so override with the script.
 563    # FIXME: It is wrong to rewrite CC.
 564    # But if we don't then we get into trouble of one sort or another.
 565    # A longer-term fix would be to have automake use am__CC in this case,
 566    # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
 567    CC="$am_aux_dir/compile $CC"
 568 fi
 569 ])
 570
 571 # AM_AUX_DIR_EXPAND
 572
 573 # Copyright (C) 2001, 2003 Free Software Foundation, Inc.
 574
 575 # This program is free software; you can redistribute it and/or modify
 576 # it under the terms of the GNU General Public License as published by
 577 # the Free Software Foundation; either version 2, or (at your option)
 578 # any later version.
 579
 580 # This program is distributed in the hope that it will be useful,
 581 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 582 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 583 # GNU General Public License for more details.
 584
 585 # You should have received a copy of the GNU General Public License
 586 # along with this program; if not, write to the Free Software
 587 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 588 # 02111-1307, USA.
 589
 590 # For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
 591 # $ac_aux_dir to `$srcdir/foo'.  In other projects, it is set to
 592 # `$srcdir', `$srcdir/..', or `$srcdir/../..'.
 593 #
 594 # Of course, Automake must honor this variable whenever it calls a
 595 # tool from the auxiliary directory.  The problem is that $srcdir (and
 596 # therefore $ac_aux_dir as well) can be either absolute or relative,
 597 # depending on how configure is run.  This is pretty annoying, since
 598 # it makes $ac_aux_dir quite unusable in subdirectories: in the top
 599 # source directory, any form will work fine, but in subdirectories a
 600 # relative path needs to be adjusted first.
 601 #
 602 # $ac_aux_dir/missing
 603 #    fails when called from a subdirectory if $ac_aux_dir is relative
 604 # $top_srcdir/$ac_aux_dir/missing
 605 #    fails if $ac_aux_dir is absolute,
 606 #    fails when called from a subdirectory in a VPATH build with
 607 #          a relative $ac_aux_dir
 608 #
 609 # The reason of the latter failure is that $top_srcdir and $ac_aux_dir
 610 # are both prefixed by $srcdir.  In an in-source build this is usually
 611 # harmless because $srcdir is `.', but things will broke when you
 612 # start a VPATH build or use an absolute $srcdir.
 613 #
 614 # So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
 615 # iff we strip the leading $srcdir from $ac_aux_dir.  That would be:
 616 #   am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
 617 # and then we would define $MISSING as
 618 #   MISSING="\${SHELL} $am_aux_dir/missing"
 619 # This will work as long as MISSING is not called from configure, because
 620 # unfortunately $(top_srcdir) has no meaning in configure.
 621 # However there are other variables, like CC, which are often used in
 622 # configure, and could therefore not use this "fixed" $ac_aux_dir.
 623 #
 624 # Another solution, used here, is to always expand $ac_aux_dir to an
 625 # absolute PATH.  The drawback is that using absolute paths prevent a
 626 # configured tree to be moved without reconfiguration.
 627
 628 AC_DEFUN([AM_AUX_DIR_EXPAND],
 629 [dnl Rely on autoconf to set up CDPATH properly.
 630 AC_PREREQ([2.50])dnl
 631 # expand $ac_aux_dir to an absolute path
 632 am_aux_dir=`cd $ac_aux_dir && pwd`
 633 ])
 634
 635
 636 dnl GCC_TARGET_TEMPLATE(KEY)
 637 dnl ------------------------
 638 dnl Define KEY as a valid configure key on the target machine.
 639
 640 m4_define([GCC_TARGET_TEMPLATE],
 641 [m4_define([GCC_TARGET_TEMPLATE($1)],[])])
 642
 643 dnl AH_TEMPLATE(KEY, DESCRIPTION)
 644 dnl -----------------------------
 645 dnl Issue an autoheader template for KEY, i.e., a comment composed of
 646 dnl DESCRIPTION (properly wrapped), and then #undef KEY.  Redefinition
 647 dnl of the macro in autoheader.m4, to support definition of only a few
 648 dnl keys while compiling target libraries.
 649
 650 m4_define([AH_TEMPLATE],
 651 [AH_VERBATIM([$1],m4_text_wrap([$2 */], [   ], [/* ])
 652 m4_ifdef([GCC_TARGET_TEMPLATE($1)],[],[#ifndef USED_FOR_TARGET
 653 ])[#undef $1]m4_ifdef([GCC_TARGET_TEMPLATE($1)],[],[
 654 #endif
 655 ]))])