https://sourceforge.net/p/libmms/bugs/22/

libmms does not use GLib any more.

--- libmms-0.6.4/pkgconfig/libmms.pc.in.old	2014-03-28 13:25:43.000000000 +0000
+++ libmms-0.6.4/pkgconfig/libmms.pc.in	2018-07-23 10:52:10.130000000 +0000
@@ -5,7 +5,6 @@
 
 Name: libmms
 Description: Library implementing the MMS protocol 
-Requires: glib-2.0
 Version: @VERSION@
 Libs: -L${libdir} -lmms -lm
 Cflags: -I${includedir}