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src/build_overrides
Eric Robinson 1d88beef04 Change asan to use blocklist.
Changing the names of files here and where they're referenced.  There's
also other locations in v8/tools/memory/asan and
third_party/dawn/tools/memory/asan that will need to be changed, but
scoping this to the changes referenced in the bug.

Bug: 1097270
Change-Id: I008e8f5eae60ec4cadb224a4b652f183951c7cb1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2565170
Reviewed-by: Mirko Bonadei <mbonadei@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Reid Kleckner <rnk@chromium.org>
Reviewed-by: Jonathan Metzman <metzman@chromium.org>
Commit-Queue: Eric Robinson <ericrobinson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#832390}
2020-12-01 17:14:57 +00:00
..
2020-12-01 17:14:57 +00:00

Build overrides in GN

This directory is used to allow different products to customize settings for repos that are DEPS'ed in or shared.

For example: V8 could be built on its own (in a "standalone" configuration), and it could be built as part of Chromium. V8 might define a top-level target, //v8:d8 (a simple executable), that should only be built in the standalone configuration. To figure out whether or not it should be in a standalone configuration, v8 can create a file, build_overrides/v8.gni, that contains a variable, build_standalone_d8 = true. and import it (as import("//build_overrides/v8.gni") from its top-level BUILD.gn file.

Chromium, on the other hand, might not need to build d8, and so it would create its own build_overrides/v8.gni file, and in it set build_standalone_d8 = false.

The two files should define the same set of variables, but the values can vary as appropriate to the needs of the two different builds.

The build.gni file provides a way for projects to override defaults for variables used in //build itself (which we want to be shareable between projects).

TODO(crbug.com/588513): Ideally //build_overrides and, in particular, //build_overrides/build.gni should go away completely in favor of some mechanism that can re-use other required files like //.gn, so that we don't have to keep requiring projects to create a bunch of different files to use GN.