Expose runfiles symlink functionality in Skylark

The Skylark rule context object has a runfiles method.  This adds two
optional parameters to that method, "symlinks" and "root_symlinks",
that expose functionality from the underlying Runfiles java class.
With this functionality, one can construct links in the runfiles tree
where the source and destination of the link have different names
and/or relative directories.  This might be useful for things like
AppEngine rules where a file in a subdirectory of the source tree
needs to appear in the root directory of the runfiles tree.

If either new parameter is used, the runfiles is subject to stricter
validity checking.  This checking propagates to other runfiles that
depend on it.

RELNOTES: Added "root_symlinks" and "symlinks" parameters to Skylark
runfiles() method.

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MOS_MIGRATED_REVID=116879064
5 files changed
tree: 5b9102dd2d611290ae61ba95a2fb6b57eb85b222
  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. compile.sh
  13. CONTRIBUTING.md
  14. CONTRIBUTORS
  15. LICENSE.txt
  16. README.md
  17. WORKSPACE
README.md

Bazel (Beta)

{Fast, Correct} - Choose two

Bazel is a build tool that builds code quickly and reliably. It is used to build the majority of Google‘s software, and thus it has been designed to handle build problems present in Google’s development environment, including:

  • A massive, shared code repository, in which all software is built from source. Bazel has been built for speed, using both caching and parallelism to achieve this. Bazel is critical to Google's ability to continue to scale its software development practices as the company grows.

  • An emphasis on automated testing and releases. Bazel has been built for correctness and reproducibility, meaning that a build performed on a continuous build machine or in a release pipeline will generate bitwise-identical outputs to those generated on a developer's machine.

  • Language and platform diversity. Bazel's architecture is general enough to support many different programming languages within Google, and can be used to build both client and server software targeting multiple architectures from the same underlying codebase.

Find more background about Bazel in our FAQ.

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