Simplify cmake checks related to libosmocore
diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index 5fa9da4..0f2c629 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -88,7 +88,7 @@
     list (APPEND grgsm_link_libraries ws2_32)
 endif()
 
-if(LIBOSMOCORE_FOUND AND LIBOSMOCODEC_FOUND AND LIBOSMOGSM_FOUND)
+if(NOT LOCAL_OSMOCOM)
     list (APPEND grgsm_link_libraries ${LIBOSMOCORE_LIBRARIES} ${LIBOSMOCODEC_LIBRARIES} ${LIBOSMOGSM_LIBRARY})
     if(LIBOSMOCODING_FOUND)
         list (APPEND grgsm_link_libraries ${LIBOSMOCODING_LIBRARIES})