2007-01-08 Bruno Haible <bruno@clisp.org>

[gnulib.git] / m4 / unlink-busy.m4

diff --git a/m4/unlink-busy.m4 b/m4/unlink-busy.m4
index be6a7dd..cdc5f74 100644 (file)
--- a/m4/unlink-busy.m4
+++ b/m4/unlink-busy.m4
@@ -1,24 +1,27 @@
-#serial 5
+#serial 10
 
 dnl From J. David Anglin.
 
 dnl HPUX and other systems can't unlink shared text that is being executed.
 
-AC_DEFUN(jm_FUNC_UNLINK_BUSY_TEXT,
+# Copyright (C) 2000, 2001, 2004, 2006 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_UNLINK_BUSY_TEXT],
 [dnl
   AC_CACHE_CHECK([whether a running program can be unlinked],
     jm_cv_func_unlink_busy_text,
     [
-      AC_TRY_RUN([
-        main (argc, argv)
-          int argc;
-          char **argv;
-        {
-          if (!argc)
-            exit (-1);
-          exit (unlink (argv[0]));
-        }
-       ],
+      AC_RUN_IFELSE(
+        [AC_LANG_SOURCE(
+           [AC_INCLUDES_DEFAULT
+           int
+           main (int argc, char **argv)
+           {
+             return !argc || unlink (argv[0]) != 0;
+           }])],
       jm_cv_func_unlink_busy_text=yes,
       jm_cv_func_unlink_busy_text=no,
       jm_cv_func_unlink_busy_text=no