skia2/bazel
Kevin Lubick 97284f255b [infra] Add initial platforms and constraint values
This makes use of Bazel's pre-defined platforms
https://github.com/bazelbuild/platforms
and some of our own defined values (see
//bazel/common_config_settings/BUILD.bazel) to customize
the build rules.

I verified this by building bazel_test locally for
linux x64 as well as using the third_party deps for
a WASM build (using build files not seen in this CL).

Suggested Review Order:
 - https://docs.bazel.build/versions/main/platforms.html if not
   already familiar with Bazel Platforms
 - third_party/BUILD.bazel to see that 1) all globs have
   been removed and 2) select() targets various
   platform constants or groups of constants to control
   sources, headers, and local_defines.
 - common_config_settings/ to see the groups of constraints
   created, as well as new constraint_settings defined
   (skdebug_impl)
 - supported_combinations/ to see how we can define supported
   sets of the constraint values (aka Bazel platforms).
   I imagine expanding this more, so we might have platforms
   named "linux_x64_emptyfontmgr_vulkan" or such.
 - //BUILD.bazel and bazel_test.cpp to see use of SkDebugf.
 - Everything else.

Change-Id: I49e4abdbcf7b76f0674efdbb1f53dc8823d110ee
Bug: skia:12541
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/463517
Reviewed-by: Ben Wagner <bungeman@google.com>
Reviewed-by: Leandro Lovisolo <lovisolo@google.com>
Owners-Override: Kevin Lubick <kjlubick@google.com>
2021-10-26 18:27:13 +00:00
..
common_config_settings
supported_combinations
BUILD.bazel