Not always used.

diff --git a/crypto/bio/bss_dgram.c b/crypto/bio/bss_dgram.c
index 80d31b199de984076985e072072594780a5031c2..2e1a6fac33d90596f1f812a0684c745b8f4d2c1e 100644 (file)
--- a/crypto/bio/bss_dgram.c
+++ b/crypto/bio/bss_dgram.c
@@ -333,8 +333,10 @@ static long dgram_ctrl(BIO *b, int cmd, long num, void *ptr)
        int *ip;
        struct sockaddr *to = NULL;
        bio_dgram_data *data = NULL;
+#if defined(IP_MTU_DISCOVER) || defined(IP_MTU)
        long sockopt_val = 0;
        unsigned int sockopt_len = 0;
+#endif
 #ifdef OPENSSL_SYS_LINUX
        socklen_t addr_len;
        struct sockaddr_storage addr;