--- libpst-0.6.53/libpst.pc.in.orig
+++ libpst-0.6.53/libpst.pc.in
@@ -8,4 +8,5 @@
 Version: @VERSION@
 Requires:
 Libs: -L${libdir} -lpst
+Libs.private: @LIBS@
 Cflags: -I${includedir}/libpst-@LIBPST_SO_MAJOR@
