--- /dev/null
+--- grilo-plugins-0.2.16/configure.ac.orig 2015-09-23 23:58:15.000000000 +0200
++++ grilo-plugins-0.2.16/configure.ac 2015-10-20 19:10:42.545052862 +0200
+@@ -46,7 +46,7 @@
+ # ----------------------------------------------------------
+
+ GNOME_COMPILE_WARNINGS([maximum])
+-CFLAGS+=" ${WARN_CFLAGS} -Wmissing-declarations -std=c99 "
++CFLAGS="$CFLAGS ${WARN_CFLAGS} -Wmissing-declarations -std=c99 "
+
+ GNOME_MAINTAINER_MODE_DEFINES
+