57 lines
1.7 KiB
Plaintext
57 lines
1.7 KiB
Plaintext
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dnl GAS_CHECK_DECL_NEEDED(name, typedefname, typedef, headers)
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AC_DEFUN(GAS_CHECK_DECL_NEEDED,[
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AC_MSG_CHECKING(whether declaration is required for $1)
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AC_CACHE_VAL(gas_cv_decl_needed_$1,
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AC_TRY_LINK([$4],
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[
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typedef $3;
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$2 x;
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x = ($2) $1;
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], gas_cv_decl_needed_$1=no, gas_cv_decl_needed_$1=yes))dnl
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AC_MSG_RESULT($gas_cv_decl_needed_$1)
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if test $gas_cv_decl_needed_$1 = yes; then
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AC_DEFINE([NEED_DECLARATION_]translit($1, [a-z], [A-Z]), 1,
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[Define if $1 is not declared in system header files.])
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fi
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])dnl
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dnl
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dnl Some non-ANSI preprocessors botch requoting inside strings. That's bad
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dnl enough, but on some of those systems, the assert macro relies on requoting
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dnl working properly!
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dnl GAS_WORKING_ASSERT
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AC_DEFUN(GAS_WORKING_ASSERT,
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[AC_MSG_CHECKING([for working assert macro])
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AC_CACHE_VAL(gas_cv_assert_ok,
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AC_TRY_LINK([#include <assert.h>
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#include <stdio.h>], [
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/* check for requoting problems */
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static int a, b, c, d;
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static char *s;
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assert (!strcmp(s, "foo bar baz quux"));
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/* check for newline handling */
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assert (a == b
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|| c == d);
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], gas_cv_assert_ok=yes, gas_cv_assert_ok=no))dnl
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AC_MSG_RESULT($gas_cv_assert_ok)
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test $gas_cv_assert_ok = yes || AC_DEFINE(BROKEN_ASSERT, 1, [assert broken?])
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])dnl
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dnl
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dnl Since many Bourne shell implementations lack subroutines, use this
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dnl hack to simplify the code in configure.in.
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dnl GAS_UNIQ(listvar)
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AC_DEFUN(GAS_UNIQ,
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[_gas_uniq_list="[$]$1"
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_gas_uniq_newlist=""
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dnl Protect against empty input list.
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for _gas_uniq_i in _gas_uniq_dummy [$]_gas_uniq_list ; do
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case [$]_gas_uniq_i in
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_gas_uniq_dummy) ;;
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*) case " [$]_gas_uniq_newlist " in
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*" [$]_gas_uniq_i "*) ;;
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*) _gas_uniq_newlist="[$]_gas_uniq_newlist [$]_gas_uniq_i" ;;
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esac ;;
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esac
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done
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$1=[$]_gas_uniq_newlist
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])dnl
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