[dpdk-dev] [PATCH] net/mlx: update C compliance standard

[Adrien Mazarguil <adrien.mazarguil@6wind.com>]

This commit addresses a compilation issue against Glibc >= 2.25, which
implements assert() through a nonstandard ({ }) construct. Such constructs
can normally not be used without __extension__ keyword when -pedantic is
enabled, as is the case when compiling mlx4 and mlx5 PMDs in debug mode.

While assert.h checks for the compiler ability to support GNU extensions,
Clang, unlike GCC, does not allow the above syntax when combining
-std=gnu99 with -pedantic.

Work around missing keyword by moving these PMDs to a stricter compliance
standard without GNU extensions but properly checked by Glibc. Doing so is
supported on the DPDK side since includes have been cleaned up.

Signed-off-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
---
 drivers/net/mlx4/Makefile | 2 +-
 drivers/net/mlx5/Makefile | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/mlx4/Makefile b/drivers/net/mlx4/Makefile
index e873fb4..755c8a4 100644
--- a/drivers/net/mlx4/Makefile
+++ b/drivers/net/mlx4/Makefile
@@ -40,7 +40,7 @@ SRCS-$(CONFIG_RTE_LIBRTE_MLX4_PMD) += mlx4_flow.c
 
 # Basic CFLAGS.
 CFLAGS += -O3
-CFLAGS += -std=gnu99 -Wall -Wextra
+CFLAGS += -std=c11 -Wall -Wextra
 CFLAGS += -g
 CFLAGS += -I.
 CFLAGS += -D_BSD_SOURCE
diff --git a/drivers/net/mlx5/Makefile b/drivers/net/mlx5/Makefile
index daf8013..8b8f6ea 100644
--- a/drivers/net/mlx5/Makefile
+++ b/drivers/net/mlx5/Makefile
@@ -52,7 +52,7 @@ SRCS-$(CONFIG_RTE_LIBRTE_MLX5_PMD) += mlx5_flow.c
 
 # Basic CFLAGS.
 CFLAGS += -O3
-CFLAGS += -std=gnu99 -Wall -Wextra
+CFLAGS += -std=c11 -Wall -Wextra
 CFLAGS += -g
 CFLAGS += -I.
 CFLAGS += -D_BSD_SOURCE
-- 
2.1.4