configure: suppress some warnings when debug is disabled

Warnings about unused variables should be suppressed if core has the
debug system disabled.

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=676824

diff --git a/configure.ac b/configure.ac
index 83f1f792921fc7cacc74e30427e332f20c42b5b3..50fe7a463899eefb26542fdc9ef2a6e9ab5a6568 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -159,8 +159,13 @@ AC_SUBST(GST_LICENSE)
 dnl set location of plugin directory
 AG_GST_SET_PLUGINDIR
 
+# set by AG_GST_PARSE_SUBSYSTEM_DISABLES above
+dnl make sure it doesn't complain about unused variables if debugging is disabled
+NO_WARNINGS=""
+AG_GST_CHECK_GST_DEBUG_DISABLED([NO_WARNINGS="-Wno-unused"], [NO_WARNINGS=""])
+
 dnl define an ERROR_CFLAGS Makefile variable
-AG_GST_SET_ERROR_CFLAGS($GST_GIT)
+AG_GST_SET_ERROR_CFLAGS($GST_GIT, [$NO_WARNINGS])
 
 dnl define correct level for debugging messages
 AG_GST_SET_LEVEL_DEFAULT($GST_GIT)