diff -r -u gsoap-2.8.orig/gsoap/stdsoap2.h gsoap-2.8/gsoap/stdsoap2.h
--- gsoap-2.8.orig/gsoap/stdsoap2.h	2015-04-14 08:46:36.000000000 +0200
+++ gsoap-2.8/gsoap/stdsoap2.h	2015-07-24 13:52:27.584071550 +0200
@@ -728,6 +728,7 @@
 #    include <netinet/tcp_var.h>
 #   else
 #    include <netinet/tcp.h>          /* TCP_NODELAY, TCP_FASTOPEN */
+#    undef TCP_FASTOPEN
 #   endif
 #   include <arpa/inet.h>
 #  endif