`--target-help` option is not available with CC set to clang
causing `clang: error: no input files`.
redirect `--target-help` stderr to `/dev/null`
This patch fix issue: #2820
Signed-off-by: Sebastian Brzezinka <sebastian.brzezinka@intel.com>
Change-Id: I2c90e0122e162dc08537d94bbf0adad58f2eee2c
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/15967
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Michal Berger <michal.berger@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com>
Community-CI: Mellanox Build Bot
48f3f38384