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dnl GAS_CHECK_DECL_NEEDED(name, typedefname, typedef, headers)

AC_DEFUN([GAS_CHECK_DECL_NEEDED],[

AC_MSG_CHECKING(whether declaration is required for $1)

AC_CACHE_VAL(gas_cv_decl_needed_$1,

AC_TRY_LINK([$4],

[

typedef $3;

$2 x;

x = ($2) $1;

], gas_cv_decl_needed_$1=no, gas_cv_decl_needed_$1=yes))dnl

AC_MSG_RESULT($gas_cv_decl_needed_$1)

if test $gas_cv_decl_needed_$1 = yes; then

 AC_DEFINE([NEED_DECLARATION_]translit($1, [a-z], [A-Z]), 1,

           [Define if $1 is not declared in system header files.])

fi

])dnl

dnl

dnl Some non-ANSI preprocessors botch requoting inside strings.  That's bad

dnl enough, but on some of those systems, the assert macro relies on requoting

dnl working properly!

dnl GAS_WORKING_ASSERT

AC_DEFUN([GAS_WORKING_ASSERT],

[AC_MSG_CHECKING([for working assert macro])

AC_CACHE_VAL(gas_cv_assert_ok,

AC_TRY_LINK([#include <assert.h>

#include <stdio.h>], [

/* check for requoting problems */

static int a, b, c, d;

static char *s;

assert (!strcmp(s, "foo bar baz quux"));

/* check for newline handling */

assert (a == b

        || c == d);

], gas_cv_assert_ok=yes, gas_cv_assert_ok=no))dnl

AC_MSG_RESULT($gas_cv_assert_ok)

test $gas_cv_assert_ok = yes || AC_DEFINE(BROKEN_ASSERT, 1, [assert broken?])

])dnl

dnl

dnl Since many Bourne shell implementations lack subroutines, use this

dnl hack to simplify the code in configure.in.

dnl GAS_UNIQ(listvar)

AC_DEFUN([GAS_UNIQ],

[_gas_uniq_list="[$]$1"

_gas_uniq_newlist=""

dnl Protect against empty input list.

for _gas_uniq_i in _gas_uniq_dummy [$]_gas_uniq_list ; do

  case [$]_gas_uniq_i in

  _gas_uniq_dummy) ;;

  *) case " [$]_gas_uniq_newlist " in

       *" [$]_gas_uniq_i "*) ;;

       *) _gas_uniq_newlist="[$]_gas_uniq_newlist [$]_gas_uniq_i" ;;

     esac ;;

  esac

done

$1=[$]_gas_uniq_newlist

])dnl