diff --git a/so_5/CMakeLists.txt b/so_5/CMakeLists.txt
index bd6f1d7..0e30831 100644
--- a/so_5/CMakeLists.txt
+++ b/so_5/CMakeLists.txt
@@ -71,12 +71,17 @@ set(SO_5_SRC exception.cpp
 	disp/prio_dedicated_threads/one_per_prio/pub.cpp
 )
 
-add_library(${SO_5_TARGET} SHARED ${SO_5_SRC})
+if (SO_BUILD_STATIC)
+    message(STATUS "Building static.")
+    add_library(${SO_5_TARGET} STATIC ${SO_5_SRC})
+    target_compile_definitions(${SO_5_TARGET}
+    	PUBLIC -DSO_5_STATIC_LIB
+    )
+else()
+    message(STATUS "Building dynamic.")
+    add_library(${SO_5_TARGET} SHARED ${SO_5_SRC})
+endif()
 
-add_library(${SO_5_S_TARGET} STATIC ${SO_5_SRC})
-target_compile_definitions(${SO_5_S_TARGET}
-	PUBLIC -DSO_5_STATIC_LIB
-)
 
 set(SO_5_EXT_LIBS )
 if( ANDROID )
@@ -90,7 +95,7 @@ foreach(__extLibrary ${SO_5_EXT_LIBS})
 endforeach()
 
 install(
-	TARGETS ${SO_5_TARGET} ${SO_5_S_TARGET}
+	TARGETS ${SO_5_TARGET}
 	LIBRARY DESTINATION lib
 	ARCHIVE DESTINATION lib
 	RUNTIME DESTINATION bin