install main lib only if it's shared

cmake_modules/VCMI_lib.cmake

@@ -494,7 +494,9 @@ macro(add_main_lib TARGET_NAME LIBRARY_TYPE)
 		add_dependencies(${TARGET_NAME} update_version)
 	endif()
 
-	install(TARGETS ${TARGET_NAME} RUNTIME DESTINATION ${LIB_DIR} LIBRARY DESTINATION ${LIB_DIR} COMPONENT core)
+	if("${LIBRARY_TYPE}" STREQUAL SHARED)
+		install(TARGETS ${TARGET_NAME} RUNTIME DESTINATION ${LIB_DIR} LIBRARY DESTINATION ${LIB_DIR} COMPONENT core)
+	endif()
 	if(APPLE_IOS)
 		get_target_property(LINKED_LIBS ${TARGET_NAME} LINK_LIBRARIES)
 		foreach(LINKED_LIB IN LISTS LINKED_LIBS)