Unbreak CMake config file.
Index: gwenhywfar-config.cmake.in
--- gwenhywfar-config.cmake.in.orig
+++ gwenhywfar-config.cmake.in
@@ -28,7 +28,7 @@ if(WIN32)
 elseif(APPLE)
     set_and_check(GWENHYWFAR_LIBRARIES "@libdir@/libgwenhywfar.@GWENHYWFAR_SO_EFFECTIVE@.dylib")
 else()
-    set_and_check(GWENHYWFAR_LIBRARIES "@libdir@/libgwenhywfar.so.@GWENHYWFAR_SO_EFFECTIVE@")
+    set_and_check(GWENHYWFAR_LIBRARIES "@libdir@/libgwenhywfar.so.${LIBgwenhywfar_VERSION}")
 endif()
 
 set(GWENHYWFAR_FOUND TRUE)
