[folks] docs: only use one copy of the tp-zeitgeist interface

[Travis Reitter <treitter src gnome org>]

commit b8f430b58ac2836e8b341c9ba324cbf7eca8a136
Author: Travis Reitter <travis reitter collabora co uk>
Date:   Fri Jul 5 15:20:13 2013 -0700

    docs: only use one copy of the tp-zeitgeist interface
    
    We can't include both tp-zeitgeist and tp-zeitgeist-dummy because valadoc
    will complain of re-definitions. Using the dummy version seems to work even
    if --enable-zeitgeist is used, so this should cover us in all cases.

 docs/Makefile.am |   14 +++++++++++++-
 1 files changed, 13 insertions(+), 1 deletions(-)
---
diff --git a/docs/Makefile.am b/docs/Makefile.am
index fdaa52d..cfa79fb 100644
--- a/docs/Makefile.am
+++ b/docs/Makefile.am
@@ -128,7 +128,19 @@ $(folkstelepathydoc_DATA) $(folkstelepathyimg_DATA): \
        $(NULL)
 $(folkstelepathygtkdoc_DATA): folks-telepathy-gtk-doc.stamp
 
-folks_telepathy_doc_files = $(top_srcdir)/backends/telepathy/lib/*.vala
+# ensure we only have one set of tp-zeitgeist interfaces defined
+folks_telepathy_doc_files_blacklist = \
+       $(top_srcdir)/backends/telepathy/lib/tp-zeitgeist.vala \
+       $(NULL)
+# this expands the list of files, so we can filter out elements
+folks_telepathy_doc_files_all = \
+       $(wildcard $(top_srcdir)/backends/telepathy/lib/*.vala) \
+       $(NULL)
+# FIXME: sort the files manually to work around the native doclet portion of
+# bgo#662784
+folks_telepathy_doc_files = \
+       $(sort \
+       $(filter-out $(folks_telepathy_doc_files_blacklist),$(folks_telepathy_doc_files_all)))
 folks_telepathy_doc_deps = \
        gmodule-2.0 \
        gio-2.0 \