explicit link to ws2_32 if targeting Windows

#pragma comment(lib,"Ws2_32.lib") in endian.h is a hack and is not portable. It only works for Visual Studio, not gcc or clang on Windows.

CMakeLists.txt

@@ -92,6 +92,10 @@ else()
     add_library(${PROJECT_NAME} STATIC ${src_MAIN} ${src_LINUX_TCP})
 endif()
 
+if(WIN32)
+    target_link_libraries(${PROJECT_NAME} PUBLIC ws2_32)
+endif()
+
 # install rules
 # ------------------------------------------------------------------------------------------------------