[gtk-osx] Fix git build of libsigc++ so that it doesn't need doxygen.

[John Ralls <jralls src gnome org>]

commit 3c5d503cde27157852a9c4df30a8fc2065eb2538
Author: John Ralls <jralls ceridwen us>
Date:   Sat Nov 3 12:09:09 2012 -0700

    Fix git build of libsigc++ so that it doesn't need doxygen.

 modulesets-unstable/gtk-osx-gtkmm.modules |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/modulesets-unstable/gtk-osx-gtkmm.modules b/modulesets-unstable/gtk-osx-gtkmm.modules
index 88fd4fe..72bc7d6 100644
--- a/modulesets-unstable/gtk-osx-gtkmm.modules
+++ b/modulesets-unstable/gtk-osx-gtkmm.modules
@@ -51,11 +51,16 @@
             repo="doxygen" />
   </autotools>
 
-  <autotools id="libsigc++2" >
+<!-- libsigc++ depends on doxygen for documentation, but doxygen
+     doesn't build correctly under gtk-osx. It builds fine on its own,
+     of course, and there are OSX binaries available on their
+     website. If you want the docs, install it separately and renable
+     documentation in your jhbuildrc-custom. -->
+  <autotools id="libsigc++2" autogen-args="--disable-documentation">
      <branch />
     <dependencies>
       <dep package="mm-common"/>
-      <dep package="doxygen"/>
+      <!-- dep package="doxygen"/ -->
     </dependencies>
   </autotools>