tag e864f25c3b8f1aac6d4cb0d473f5891a8a09c665
tagger The Android Open Source Project <initial-contribution@android.com> Wed Jun 09 15:39:22 2021 -0700
object 1d9e9c483f1005b930c42dc85c1768bd1a9d57e3

Android S Beta 2 (SPB2.210513.007)

commit 1d9e9c483f1005b930c42dc85c1768bd1a9d57e3
author Jingwen Chen <jingwen@google.com> Fri May 07 10:08:52 2021 +0000
committer Jingwen Chen <jingwen@google.com> Thu May 13 08:13:09 2021 +0000
tree 0e3df7e90ea8539bb4cec4dc22be6a34cd6eb998
parent 537e01a6ff78760ee5b69597efdbc47bc721058d

bp2build/cc_toolchain: use exported clang/lld flags from Soong.

This CL removes a bunch of hardcoded flags from many moons ago, and replace them with exported flags from clang.go and global.go in Soong.

This CL also handles host/device distinctions using
target_platform_has_constraint [1] to determine if a target_platform
constraint for the android_cc_toolchain is a host or device, to load the
right flag set from the generated cc vars file.

This CL also ensures that the list of non-overridable cflags, which
currently exclude some warnings from -Wall, are always set after the
user-provided copts/cxxopts.

This will reduce the command line differences between Bazel and Soong
cpp/c compile, assemble, link actions.

https://github.com/bazelbuild/proposals/blob/master/designs/2019-11-11-target-platform-constraints.md#proposal-a-check-method-that-takes-a-constraint-value-label

Bug: 187857770
Fixes: 187857770
Test: TH
Change-Id: I120f42c94ddadd374cb97977da71943b0bf1b9e1