- Add Windows required library 

diff --git a/library/CMakeLists.txt b/library/CMakeLists.txt
index 8b2e932..ecc2065 100644
--- a/library/CMakeLists.txt
+++ b/library/CMakeLists.txt
@@ -43,6 +43,10 @@
      xtea.c
 )
 
+if(WIN32)
+set(libs ws2_32)
+endif(WIN32)
+
 if(NOT USE_SHARED_POLARSSL_LIBRARY)
 
 add_library(polarssl STATIC ${src})
@@ -54,6 +58,8 @@
 
 endif(NOT USE_SHARED_POLARSSL_LIBRARY)
 
+target_link_libraries(polarssl ${libs})
+
 install(TARGETS polarssl
         DESTINATION ${LIB_INSTALL_DIR}
         PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)