--- gr-digital/doc/CMakeLists.txt.orig	2012-01-02 14:04:33.000000000 -0500
+++ gr-digital/doc/CMakeLists.txt	2014-03-02 20:20:09.000000000 -0500
@@ -17,7 +17,9 @@
 # the Free Software Foundation, Inc., 51 Franklin Street,
 # Boston, MA 02110-1301, USA.
 
+if(ENABLE_DOCS)
 install(
     FILES README.digital
     DESTINATION ${GR_PKG_DOC_DIR}
 )
+endif(ENABLE_DOCS)