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-rw-r--r--ext/socket/socket.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/ext/socket/socket.c b/ext/socket/socket.c
index b7502e2915..c630a4b77d 100644
--- a/ext/socket/socket.c
+++ b/ext/socket/socket.c
@@ -64,7 +64,9 @@ void SOCKSinit();
int Rconnect();
#endif
+#ifndef HAVE_STRDUP
char *strdup();
+#endif
#define INET_CLIENT 0
#define INET_SERVER 1