As of Fedora 17 gfs_controld isn't required and also doesn't build. This
patch adds an --enable-gfs_controld option to allow it to be built on
older systems while defaulting to future norm of not building it.
diff --git a/README.build b/README.build
index 007f2d7..27e022a 100644
--- a/README.build
+++ b/README.build
@@ -21,6 +21,12 @@ Plus the following libraries:
- libcfg
- openaislib
+By default gfs_controld is not built as it is not required in Fedora 17 and
+later and cannot build on it. To re-enable it for older systems, use
+--enable-gfs_controld when running the configure script (see below). The
+library dependencies for gfs_controld are only required when this option is
+given.
+
Run the following commands: