X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Funlink-busy.m4;h=687f900da1d6bd941a227ce92d7a91623683d7c8;hb=c29717fb753f81891cb6e4274adaf11a0bcba374;hp=95c08102036b69f8c2c3c50cc2504f33a23948d6;hpb=301a3bfef8938de5abb4b738929fbcb700b05e19;p=gnulib.git

diff --git a/m4/unlink-busy.m4 b/m4/unlink-busy.m4
index 95c081020..687f900da 100644
--- a/m4/unlink-busy.m4
+++ b/m4/unlink-busy.m4
@@ -1,24 +1,27 @@
-#serial 4
+#serial 11
 
 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, 2007 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 program can unlink itself],
+  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