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-rw-r--r--configure.ac1
1 files changed, 1 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index e64386f0..373d21b3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -839,6 +839,7 @@ mips-sony-bsd|mips-sony-newsos4)
if test "x$withval" != "xno" ; then
need_dash_r=1
fi
+ CPPFLAGS="$CPPFLAGS -D_OPENBSD_SOURCE"
AC_DEFINE([SSH_TUN_FREEBSD], [1], [Open tunnel devices the FreeBSD way])
AC_CHECK_HEADER([net/if_tap.h], ,
AC_DEFINE([SSH_TUN_NO_L2], [1], [No layer 2 tunnel support]))