stop installing duplicate docs; tweak installed files; Add info manual to doc-base

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

diff --git a/m4/unlink-busy.m4 b/m4/unlink-busy.m4
index a38eb70..c45648d 100644 (file)
--- a/m4/unlink-busy.m4
+++ b/m4/unlink-busy.m4
@@ -1,10 +1,10 @@
-#serial 11
+#serial 12
 
 dnl From J. David Anglin.
 
 dnl HPUX and other systems can't unlink shared text that is being executed.
 
-# Copyright (C) 2000, 2001, 2004, 2007 Free Software Foundation, Inc.
+# Copyright (C) 2000-2001, 2004, 2007, 2009-2014 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.
@@ -17,11 +17,16 @@ AC_DEFUN([gl_FUNC_UNLINK_BUSY_TEXT],
       AC_RUN_IFELSE(
         [AC_LANG_SOURCE(
            [AC_INCLUDES_DEFAULT[
-           int
-           main (int argc, char **argv)
-           {
-             return !argc || unlink (argv[0]) != 0;
-           }]])],
+            int
+            main (int argc, char **argv)
+            {
+              int result = 0;
+              if (argc == 0)
+                result |= 1;
+              else if (unlink (argv[0]) != 0)
+                result |= 2;
+              return result;
+            }]])],
       gl_cv_func_unlink_busy_text=yes,
       gl_cv_func_unlink_busy_text=no,
       gl_cv_func_unlink_busy_text=no