tree 1b674ea88503143c59c98dd0f12d6a0012a487f5
parent b66792804adc4b3a7217512c1af31e42b0528851
author Alexei Frolov <frolv@google.com> 1573685354 -0800
committer Alexei Frolov <frolv@google.com> 1573691665 +0000

Start build target config files

This change defines the build target system used by Pigweed, where the
build is configured using per-target globals imported from a target .gni
file. A single build arg specifying the path to the target file replaces
the previous args.

A default build variables file is provided in the Pigweed root. This
file defines and documents all of the build variables used by Pigweed.

A top-level targets directory is added to define the targets used by
Pigweed developers. Currently, only a "host" target is added, which
configures the build for a development system based on the host OS.

Change-Id: Ie62b8d41e5789bfe7fffe20462160142c79076c4