On 11/3/2022 3:35 PM, Thomas Monjalon wrote:
03/11/2022 16:22, Ferruh Yigit:
"meson setup" fails when '-Werror' compiler flag is enabled [1].
This is not a build error in the driver but a build error in meson
during "meson setup" stage.
This issue exists for a while but meson takes it as a warning and
ignores it unless '-Werror' compiler flag is provided.
[...]
Reproduced via `meson -Dc_args='-Werror' build`
Is it different of 'meson --werror" as in devtools/test-meson-builds.sh
or 'meson -Dwerror=true' as in .ci/linux-build.sh?
As I checked now, it seems there is a difference.
Via "meson --werror" & "meson -Dwerror=true",
'-Werror' flag is used to compile dpdk source code, but meson doesn't
use the flag for its internal logic, so this seems more proper usage.
Via "meson -Dc_args='-Werror'" & "CFLAGS='-Werror' meson" usage,
'-Werror' flag is used both to compile dpdk code and meson internal
logic, so that is why this usage cause build error.
And independent from the above usage difference, event/dlb2 meson file
is wrong and this fix is required.
I assume 'dlb2_avx512.c' compiled because of the '-mavx512vl' fallback
and that is why mentioned error is not detected.
