Index: libpsl.pc.in
--- libpsl.pc.in.orig	2016-12-12 11:11:05.000000000 +0100
+++ libpsl.pc.in	2017-02-25 18:08:53.070210000 +0100
@@ -5,7 +5,8 @@
 
 Name: @PACKAGE_NAME@
 Description: Public Suffix List C library.
+Requires: libidn
 Version: @PACKAGE_VERSION@
 URL: @PACKAGE_URL@
-Libs: -L${libdir} -lpsl
+Libs: -L${libdir} -lpsl -lidn -liconv -lunistring
 Cflags: -I${includedir}