Initial revision

1 files changed, 56 insertions, 0 deletions

diff --git a/gas/acinclude.m4 b/gas/acinclude.m4
new file mode 100644
index 0000000000..31a2c1632f
--- /dev/null
+++ b/gas/acinclude.m4
@@ -0,0 +1,56 @@
+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