--- Quaternion-0.0.9.2/CMakeLists.txt.old	2018-06-17 01:05:02.000000000 +0000
+++ Quaternion-0.0.9.2/CMakeLists.txt	2018-07-25 05:15:28.550000000 +0000
@@ -43,8 +43,10 @@
 endif()
 get_filename_component(Qt5_Prefix "${Qt5_DIR}/../../../.." ABSOLUTE)
 
-add_subdirectory(lib)
-include_directories(lib)
+if (NOT USE_DYNAMIC_LIB)
+    add_subdirectory(lib)
+    include_directories(lib)
+endif()
 
 message( STATUS )
 message( STATUS "=============================================================================" )