[dpdk-dev] [PATCH] examples/l3fwd: report error when no vector engine is available

Jan Viktorin viktorin at rehivetech.com
Tue Apr 26 13:30:59 CEST 2016

If no SSE nor NEON are available the l3fwd should complain loudly to quickly
find out the reason.

Signed-off-by: Jan Viktorin <viktorin at rehivetech.com>
It has happened to me once when I've accidently built a GCC without the NEON
support. It was confusing as at first I thought it is a bug... It is not,
there is just missing an error message telling the reason.
 examples/l3fwd/l3fwd_em.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/examples/l3fwd/l3fwd_em.c b/examples/l3fwd/l3fwd_em.c
index fc59243..259094d 100644
--- a/examples/l3fwd/l3fwd_em.c
+++ b/examples/l3fwd/l3fwd_em.c
@@ -259,6 +259,8 @@ em_mask_key(void *key, xmm_t mask)
 	return vandq_s32(data, mask);
+#error No vector engine (SSE, NEON) available, check your toolchain
 static inline uint8_t

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