commit 4133ce6912fcdc8ef364b5c08f9acfb66d94fbfb
author Jingwen Chen <jingwen@google.com> Wed Dec 02 04:34:15 2020 -0500
committer Jingwen Chen <jingwen@google.com> Thu Dec 03 23:36:57 2020 -0500
tree 293c3a97ecfe538b2e9e1ad41bddd8b12a95324c
parent 62269498be456ea1c4550a37d3da2c231117a9ae

Add bp2build mode to soong_build.

This CL adds a new CONVERT_TO_BAZEL env var, and a bp2build goal. It
reuses the queryview architecture, but registers no mutators before
converting to BUILD files. This gives us a blank slate of the module
graph to work with, and create a shadow/alternate pipeline of mutators
to converge the Bazel BUILD graph to be semantically equivalent with the
Android.bp graph (after apply its current set of mutators).

The command to do so is:

    $ CONVERT_TO_BAZEL=true m bp2build

To not clobber with queryview, the generated files are in
out/soong/bp2build.

Test: CONVERT_TO_BAZEL=true m bp2build && bazel query --config=bp2build //...
Test: m queryview && bazel query --config=queryview //..
Test: soong tests
Test: TH presubmit
Fixes: 174465461
Signed-off-by: Jingwen Chen <jingwen@google.com>
Change-Id: I4dd0ccc73abc345d70a50ca2803d6f400cd8c863

android/mutator.go

diff --git a/android/mutator.go b/android/mutator.go
index 7a10477..31edea3 100644
--- a/android/mutator.go
+++ b/android/mutator.go
@@ -44,6 +44,11 @@
 	}
 }
 
+func registerMutatorsForBazelConversion(ctx *blueprint.Context) {
+	// FIXME(b/171263886): Start bringing in mutators to make the Bionic
+	// module subgraph suitable for automated conversion.
+}
+
 func registerMutators(ctx *blueprint.Context, preArch, preDeps, postDeps, finalDeps []RegisterMutatorFunc) {
 	mctx := &registerMutatorsContext{}