configure: don't override march if already set
authorJens Axboe <axboe@kernel.dk>
Wed, 7 Mar 2018 15:32:05 +0000 (08:32 -0700)
committerJens Axboe <axboe@kernel.dk>
Wed, 7 Mar 2018 15:32:05 +0000 (08:32 -0700)
commit9f75af77ea4b13cd44e5246426dbdbceff22f27c
treee809c64c7e7a1c971a11599c0ab9dbc927a720f9
parent674456bf7d0f775f774c8097c8bcb98b48cccc51
configure: don't override march if already set

Some archs (like arm or s390) already set an appropriate architecture,
so don't override it for those cases.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
configure