build: Use $(AS) for optionrom explicitly
commitcdbd727c20ad7aac7797dc8c95e485e1a4c6901b
authorRichard Henderson <rth@twiddle.net>
Fri, 8 Jul 2016 04:49:36 +0000 (7 21:49 -0700)
committerRichard Henderson <rth@twiddle.net>
Sun, 10 Jul 2016 17:05:46 +0000 (10 10:05 -0700)
tree31cfc311911c1ba23ce44fde29aa68445b7fd75b
parent4aa3f4dd5bb9c2282627bf99d85eff61b325beb0
build: Use $(AS) for optionrom explicitly

For clang before 3.5, -fno-integrated-as does not exist,
so the workaround in 5f6f0e27fb24 fails to build.

Use clang's default assembler for linux-user/safe-syscall.S,
and explicitly change to use the system assembler for the
option roms.

Tested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
configure
pc-bios/optionrom/Makefile
rules.mak