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.
 
 
 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,
     [
 [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
       jm_cv_func_unlink_busy_text=yes,
       jm_cv_func_unlink_busy_text=no,
       jm_cv_func_unlink_busy_text=no