diff -r -u glib-2.30.1.orig/gtk-doc.make glib-2.30.1/gtk-doc.make
--- glib-2.30.1.orig/gtk-doc.make	2011-10-14 09:51:22.000000000 -0400
+++ glib-2.30.1/gtk-doc.make	2011-10-21 14:45:02.655995989 -0400
@@ -92,7 +92,13 @@
 
 #### scan ####
 
-scan-build.stamp: $(HFILE_GLOB) $(CFILE_GLOB)
+$(GTKDOC_LIBS):
+	@( _target='$@' ; \
+	   echo 'Making '"$${_target##*/}"' in '"$${_target%/*}" ; \
+	   $(am__cd) "$${_target%/*}" && \
+	   $(MAKE) $(AM_MAKEFLAGS) "$${_target##*/}" ; )
+
+scan-build.stamp: $(HFILE_GLOB) $(CFILE_GLOB) $(GTKDOC_LIBS)
 	@echo '  DOC   Scanning header files'
 	@_source_dir='' ; \
 	for i in $(DOC_SOURCE_DIR) ; do \