diff --git a/CMakeLists.txt b/CMakeLists.txt
index 827343c..885b20d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -75,7 +75,9 @@ FILE(GLOB_RECURSE SRC_LIB
 FILE(GLOB_RECURSE SRC_LIB_EXT
 		${SRC_SEARCH_PATHS_EXT})
 
-SET(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${qlibc_SOURCE_DIR}/lib)
+if (NOT DEFINED CMAKE_ARCHIVE_OUTPUT_DIRECTORY)
+    set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${qlibc_SOURCE_DIR}/lib)
+endif()
 SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${qlibc_SOURCE_DIR}/lib)
 
 ADD_LIBRARY(qlibc-static STATIC ${SRC_LIB})