[PATCH 19.11 v1 2/3] net/i40e: build failure with make and clang < 13

[Haiyue Wang]

Check the clang version before enabling '-Wno-unused-but-set-variable',
otherwise it will have "error: unknown warning option".

https://reviews.llvm.org/D100581

Bugzilla ID: 913

Signed-off-by: Haiyue Wang <haiyue.wang at intel.com>
---
 drivers/net/i40e/Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/i40e/Makefile b/drivers/net/i40e/Makefile
index d6ced28f3d..3f7565fbd6 100644
--- a/drivers/net/i40e/Makefile
+++ b/drivers/net/i40e/Makefile
@@ -35,7 +35,9 @@ CFLAGS_BASE_DRIVER += -Wno-missing-field-initializers
 CFLAGS_BASE_DRIVER += -Wno-pointer-to-int-cast
 CFLAGS_BASE_DRIVER += -Wno-format-nonliteral
 CFLAGS_BASE_DRIVER += -Wno-unused-variable
+ifeq ($(shell test $(CLANG_MAJOR_VERSION) -ge 13 && echo 1), 1)
 CFLAGS_BASE_DRIVER += -Wno-unused-but-set-variable
+endif
 else
 CFLAGS_BASE_DRIVER  = -Wno-sign-compare
 CFLAGS_BASE_DRIVER += -Wno-unused-value
-- 
2.34.1