[GCC] Fix some configuration flags for Android.
Add --enable_libatomic_ifuncs to control whether or not to use
IFUNCS in libatomic; fix the testing for LIBCXX_GTHREADS.
BUG=chromium:608771
TEST=Successfully created trybot images for daisy, x86-alex, peppy
and oak. Ran correctness & performance autotests. Successfully
ran with chromiumos-sdk trybot.
Change-Id: I782c39a641cf81731557e59e681f924421a3a245
Reviewed-on: https://chromium-review.googlesource.com/341960
Commit-Ready: Caroline Tice <cmtice@chromium.org>
Tested-by: Caroline Tice <cmtice@chromium.org>
Reviewed-by: Yunlian Jiang <yunlian@chromium.org>
10 files changed
