0
Files
src/build_overrides
Peter Kasting b5edda7710 Fix problems with gtest_enable_absl_printers and enable by default.
* With this turned on, gtest unconditionally asks absl to initialize
  the symbol handler.  This causes base's attempt to do the same thing
  to fail.  Make base handle this by trying a force-reinit if this
  failure occurs.
* Allow gtest to see the full absl sources, since it unconditionally
  #includes banned headers.
* Fix include dirs not being set correctly, leading to compile failures.
* Narrow gtest absl dependency from public_deps to deps, since we don't
  want "all targets depending on gtest" to silently be able to use absl.
* Leave this flag disabled by default for NaCl, since the toolchain
  there can't compile some of the absl code.

Bug: none
Change-Id: I24930d1c2086bec1522922665708abee5ce8fc08
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2332038
Commit-Queue: Peter Kasting <pkasting@chromium.org>
Commit-Queue: Bruce Dawson <brucedawson@chromium.org>
Auto-Submit: Peter Kasting <pkasting@chromium.org>
Reviewed-by: Bruce Dawson <brucedawson@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@google.com>
Cr-Commit-Position: refs/heads/master@{#793786}
2020-07-31 22:35:47 +00:00
..
2020-07-15 17:26:58 +00:00
2020-07-15 17:26:58 +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.