Export static symbols when building ws with shared library (#370)

CMakeLists.txt

@@ -99,6 +99,7 @@ set( IXWEBSOCKET_HEADERS
     ixwebsocket/IXWebSocketCloseConstants.h
     ixwebsocket/IXWebSocketCloseInfo.h
     ixwebsocket/IXWebSocketErrorInfo.h
+    ixwebsocket/IXWebsocketExport.h
     ixwebsocket/IXWebSocketHandshake.h
     ixwebsocket/IXWebSocketHandshakeKeyGen.h
     ixwebsocket/IXWebSocketHttpHeaders.h
@@ -173,6 +174,10 @@ else()
         ${IXWEBSOCKET_SOURCES}
         ${IXWEBSOCKET_HEADERS}
     )
+
+   if( MSVC )
+        target_compile_definitions(ixwebsocket PUBLIC IXWEBSOCKET_STATIC_DEFINE)
+    endif()
 endif()
 
 if (USE_TLS)
@@ -286,6 +291,7 @@ if (IXWEBSOCKET_INSTALL)
   install(TARGETS ixwebsocket
           EXPORT ixwebsocket
           ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+          RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
           PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/ixwebsocket/
   )