Put C++ toolchain environment variables into CppLinkAction key

This cl fixes the correctness issue with CppLinkAction where Bazel was not detecting changes to the environment variables set from the cc_toolchain. CppCompileActions and LtoBackendActions are already doing this, it's only CppLinkAction that was affected.

Fixes https://github.com/bazelbuild/bazel/issues/8787.

RELNOTES: None.
PiperOrigin-RevId: 257220291
2 files changed
tree: 17d5cd9b7bd540d820dada960f609106c8708b7a
  1. .bazelci/
  2. examples/
  3. scripts/
  4. site/
  5. src/
  6. third_party/
  7. tools/
  8. .bazelrc
  9. .gitattributes
  10. .gitignore
  11. AUTHORS
  12. BUILD
  13. CHANGELOG.md
  14. CODEOWNERS
  15. combine_distfiles.py
  16. combine_distfiles_to_tar.sh
  17. compile.sh
  18. CONTRIBUTING.md
  19. CONTRIBUTORS
  20. distdir.bzl
  21. ISSUE_TEMPLATE.md
  22. LICENSE
  23. README.md
  24. WORKSPACE
README.md

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