Clarify LinuxThreads USR1/USR2 issue

[openldap] / include / ac / regex.h

diff --git a/include/ac/regex.h b/include/ac/regex.h
index c646a08d9312a541cb6b708776b98e3bdf9472e6..a9a25f1809b62ccd04e3251f88d06f8e8ba43dd8 100644 (file)
--- a/include/ac/regex.h
+++ b/include/ac/regex.h
@@ -1,5 +1,13 @@
+/* Generic Regex */
+/* $OpenLDAP$ */
 /*
- * Generic Regex
+ * Copyright 1998-2000 The OpenLDAP Foundation, Redwood City, California, USA
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted only
+ * as authorized by the OpenLDAP Public License.  A copy of this
+ * license is available at http://www.OpenLDAP.org/license.html or
+ * in file LICENSE in the top-level directory of the distribution.
  */
 #ifndef _AC_REGEX_H_
 #define _AC_REGEX_H_
@@ -8,12 +16,21 @@
 #include <sys/types.h>
 #endif
 
-#ifdef HAVE_REGEX_H
+#ifndef HAVE_REGEX_H
+/*     NO POSIX REGEX!!
+       you'll need to install a POSIX compatible REGEX library.
+       Either Henry Spencer's or GNU regex will do.
+
+       For NT: http://people.delphi.com/gjc/hs_regex.html
+*/
+#error "No POSIX REGEX available."
+
+#elif HAVE_GNUREGEX_H
+       /* system has GNU gnuregex.h */ 
+#      include <gnuregex.h>
+#else
        /* have regex.h, assume it's POSIX compliant */
 #      include <regex.h>
-#else
-       /* no regex.h, use compatibility library */
-#      include <regex-compat.h>
-#endif /* ! regex.h */
+#endif /* regex.h */
 
 #endif /* _AC_REGEX_H_ */