Index: libde265.pc.in
--- libde265.pc.in.orig
+++ libde265.pc.in
@@ -9,5 +9,5 @@ URL: https://github.com/strukturag/libde265
 Version: @VERSION@
 Requires:
 Libs: -lde265 -L${libdir}
-Libs.private: @LIBS_PRIVATE@
+Libs.private: -lpthread -lm
 Cflags: -I${includedir}