diff --git a/config/functions b/config/functions
index 371f5e2cb5..fdfbc8c869 100644
--- a/config/functions
+++ b/config/functions
@@ -68,7 +68,7 @@ setup_toolchain() {
         echo "SET(CMAKE_C_COMPILER   $CC)"  >> $CMAKE_CONF
         echo "SET(CMAKE_CXX_COMPILER $CXX)" >> $CMAKE_CONF
         echo "SET(CMAKE_CPP_COMPILER $CXX)" >> $CMAKE_CONF
-        echo "SET(CMAKE_AR $AR)"            >> $CMAKE_CONF # hum?
+        echo "SET(CMAKE_AR $AR CACHE FILEPATH "Archiver")" >> $CMAKE_CONF # hum?
         echo "SET(CMAKE_FIND_ROOT_PATH  $ROOT/$TOOLCHAIN)" >> $CMAKE_CONF
         echo "SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM BOTH)" >> $CMAKE_CONF
         echo "SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY BOTH)" >> $CMAKE_CONF