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-rw-r--r--include/netinet/tcp.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/netinet/tcp.h b/include/netinet/tcp.h
index 797ce688..5049dd91 100644
--- a/include/netinet/tcp.h
+++ b/include/netinet/tcp.h
@@ -1,6 +1,8 @@
#ifndef _NETINET_TCP_H
#define _NETINET_TCP_H
+#include <features.h>
+
#define TCP_NODELAY 1
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#include <sys/types.h>