From 2b73ef4deb7df9e42fd776f1ab334540d047af7d Mon Sep 17 00:00:00 2001
From: Michael Gran <spk121@yahoo.com>
Date: Sat, 8 Oct 2022 05:28:06 -0700
Subject: Modernizes labels-as-values.m4

labels-as-values.m4 uses deprecated AC_TRY_COMPILE and has
a K&R-type C function declaration

* m4/labels-as-values.m4: updated
---
 m4/labels-as-values.m4 | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

(limited to 'm4')

diff --git a/m4/labels-as-values.m4 b/m4/labels-as-values.m4
index 3cf7320bd..e01768f00 100644
--- a/m4/labels-as-values.m4
+++ b/m4/labels-as-values.m4
@@ -1,19 +1,18 @@
 dnl check for gcc's "labels as values" feature
 AC_DEFUN([AC_C_LABELS_AS_VALUES],
 [AC_CACHE_CHECK([labels as values], ac_cv_labels_as_values,
-[AC_TRY_COMPILE([
+[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 int foo(int);
-int foo(i)
-int i; { 
+int foo(int i) {
 static void *label[] = { &&l1, &&l2 };
 goto *label[i];
 l1: return 1;
 l2: return 2;
 }
-],
-[int i;], 
-ac_cv_labels_as_values=yes,
-ac_cv_labels_as_values=no)])
+]],
+[[foo(1);]])],
+[ac_cv_labels_as_values=yes],
+[ac_cv_labels_as_values=no])])
 if test "$ac_cv_labels_as_values" = yes; then
 AC_DEFINE([HAVE_LABELS_AS_VALUES], [],
           [Define if compiler supports gcc's "labels as values" (aka computed goto)
-- 
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