Simplify copts handling and expose them as a build variable

This cl changes copts to be immutable (and changes addCopts methods into
setCopts, so it's simpler to reason about copts) and exposes copts as a build
variable. It also introduces CompileBuildVariablesTest, similar to
LinkBuildVariablesTest, to test that right build variables are exposed for right
actions.

RELNOTES: None.
PiperOrigin-RevId: 163876774
16 files changed
tree: 1178e4eebd43353445dc582e3024a42f85899f55
  1. examples/
  2. scripts/
  3. site/
  4. src/
  5. third_party/
  6. tools/
  7. .gitattributes
  8. .gitignore
  9. AUTHORS
  10. BUILD
  11. CHANGELOG.md
  12. combine_distfiles.sh
  13. compile.sh
  14. CONTRIBUTING.md
  15. CONTRIBUTORS
  16. ISSUE_TEMPLATE.md
  17. LICENSE
  18. README.md
  19. WORKSPACE
README.md

Bazel

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