contrib/binutils/gas/acinclude.m4

   1 dnl GAS_CHECK_DECL_NEEDED(name, typedefname, typedef, headers)
   2 AC_DEFUN(GAS_CHECK_DECL_NEEDED,[
   3 AC_MSG_CHECKING(whether declaration is required for $1)
   4 AC_CACHE_VAL(gas_cv_decl_needed_$1,
   5 AC_TRY_LINK([$4],
   6 [
   7 typedef $3;
   8 $2 x;
   9 x = ($2) $1;
  10 ], gas_cv_decl_needed_$1=no, gas_cv_decl_needed_$1=yes))dnl
  11 AC_MSG_RESULT($gas_cv_decl_needed_$1)
  12 test $gas_cv_decl_needed_$1 = no || {
  13  ifelse(index($1,[$]),-1,
  14     [AC_DEFINE([NEED_DECLARATION_]translit($1, [a-z], [A-Z]))],
  15     [gas_decl_name_upcase=`echo $1 | tr '[a-z]' '[A-Z]'`
  16      AC_DEFINE_UNQUOTED(NEED_DECLARATION_$gas_decl_name_upcase)])
  17 }
  18 ])dnl
  19 dnl
  20 dnl Some non-ANSI preprocessors botch requoting inside strings.  That's bad
  21 dnl enough, but on some of those systems, the assert macro relies on requoting
  22 dnl working properly!
  23 dnl GAS_WORKING_ASSERT
  24 AC_DEFUN(GAS_WORKING_ASSERT,
  25 [AC_MSG_CHECKING([for working assert macro])
  26 AC_CACHE_VAL(gas_cv_assert_ok,
  27 AC_TRY_LINK([#include <assert.h>
  28 #include <stdio.h>], [
  29 /* check for requoting problems */
  30 static int a, b, c, d;
  31 static char *s;
  32 assert (!strcmp(s, "foo bar baz quux"));
  33 /* check for newline handling */
  34 assert (a == b
  35         || c == d);
  36 ], gas_cv_assert_ok=yes, gas_cv_assert_ok=no))dnl
  37 AC_MSG_RESULT($gas_cv_assert_ok)
  38 test $gas_cv_assert_ok = yes || AC_DEFINE(BROKEN_ASSERT)
  39 ])dnl
  40 dnl
  41 dnl Since many Bourne shell implementations lack subroutines, use this
  42 dnl hack to simplify the code in configure.in.
  43 dnl GAS_UNIQ(listvar)
  44 AC_DEFUN(GAS_UNIQ,
  45 [_gas_uniq_list="[$]$1"
  46 _gas_uniq_newlist=""
  47 dnl Protect against empty input list.
  48 for _gas_uniq_i in _gas_uniq_dummy [$]_gas_uniq_list ; do
  49   case [$]_gas_uniq_i in
  50   _gas_uniq_dummy) ;;
  51   *) case " [$]_gas_uniq_newlist " in
  52        *" [$]_gas_uniq_i "*) ;;
  53        *) _gas_uniq_newlist="[$]_gas_uniq_newlist [$]_gas_uniq_i" ;;
  54      esac ;;
  55   esac
  56 done
  57 $1=[$]_gas_uniq_newlist
  58 ])dnl