X-Git-Url: http://www.project-moonshot.org/gitweb/?a=blobdiff_plain;f=doxygen.m4;h=9bda4f66e057f96e1bec7a3db25d46d2a84a5bd9;hb=27852fc61818f9a96d115ffcc237ac7a2a32710a;hp=e9c56c206493510607068f95d6f6c4e070246ac9;hpb=bc3baabdc3af68921c0fa121b03926b7846f6e41;p=shibboleth%2Fsp.git

diff --git a/doxygen.m4 b/doxygen.m4
index e9c56c2..9bda4f6 100644
--- a/doxygen.m4
+++ b/doxygen.m4
@@ -51,6 +51,9 @@ AC_DEFUN([DX_FEATURE_xml],  OFF)
 AC_DEFUN([DX_FEATURE_pdf],  ON)
 AC_DEFUN([DX_FEATURE_ps],   ON)
 
+# Compatibility with older autoconf versions.
+m4_ifdef([AS_HELP_STRING], , [m4_define([AS_HELP_STRING], m4_defn([AC_HELP_STRING]))])
+
 ## --------------- ##
 ## Private macros. ##
 ## --------------- ##