clang reports this error:
examples/l3fwd/main.c:550:1: error: unused function 'send_packetsx4'

The function is used only when ENABLE_MULTI_BUFFER_OPTIMIZE is 1.

Fixes: 96ff445371e0 ("examples/l3fwd: reorganise and optimize LPM code path")
Fixes: 6f1c1e28d98e ("examples/l3fwd: fix build with exact-match enabled")

Signed-off-by: Thomas Monjalon <redacted>
Acked-by: Pablo de Lara <redacted>
---
 examples/l3fwd/main.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/examples/l3fwd/main.c b/examples/l3fwd/main.c
index c35926d..410f72d 100644
--- a/examples/l3fwd/main.c
+++ b/examples/l3fwd/main.c

@@ -545,7 +545,8 @@ send_single_packet(struct rte_mbuf *m, uint8_t port)
 	return 0;
 }
 
-#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
+#if ((APP_LOOKUP_METHOD == APP_LOOKUP_LPM) && \
+	(ENABLE_MULTI_BUFFER_OPTIMIZE == 1))
 static inline __attribute__((always_inline)) void
 send_packetsx4(struct lcore_conf *qconf, uint8_t port,
 	struct rte_mbuf *m[], uint32_t num)

-- 
2.7.0