Copy bindings to OUT_DIR in bssl-sys build.rs

This avoids the need for a custom environment variable in Cargo or GN
builds, including under the soong build. Then Chromium will also be able
to generate bindgen into the OUT_DIR for a sys crate via its GN rules,
as boringssl is the only crate we can find which relies on a custom
environment variable in its sys crate library's include statement.

The idea to copy from a pre-generated location comes from libsqlite3-sys
https://github.com/rusqlite/rusqlite/blob/master/libsqlite3-sys/build.rs

Bazel does not support the OUT_DIR system that is used by Cargo and
every bindgen-based crate that we could find (that didn't write to the
source dir directly). So we keep a cfg around that Bazel rules can
pass when building the bssl-sys crate.

Bug: b/373864033
Change-Id: If8a8aa8a1d8a00ead2e9935a5319bcac2aa09d1f
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/72487
Reviewed-by: Adam Langley <agl@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
2 files changed
tree: a419d6c41f5b1be94bd6ab924a5219f788369522
  1. .bcr/
  2. .github/
  3. cmake/
  4. crypto/
  5. decrepit/
  6. docs/
  7. fuzz/
  8. gen/
  9. include/
  10. infra/
  11. pki/
  12. rust/
  13. ssl/
  14. third_party/
  15. tool/
  16. util/
  17. .bazelignore
  18. .bazelrc
  19. .clang-format
  20. .gitignore
  21. API-CONVENTIONS.md
  22. BREAKING-CHANGES.md
  23. BUILD.bazel
  24. build.json
  25. BUILDING.md
  26. CMakeLists.txt
  27. codereview.settings
  28. CONTRIBUTING.md
  29. FUZZING.md
  30. go.mod
  31. go.sum
  32. INCORPORATING.md
  33. LICENSE
  34. MODULE.bazel
  35. MODULE.bazel.lock
  36. PORTING.md
  37. PrivacyInfo.xcprivacy
  38. README.md
  39. SANDBOXING.md
  40. STYLE.md
README.md

BoringSSL

BoringSSL is a fork of OpenSSL that is designed to meet Google's needs.

Although BoringSSL is an open source project, it is not intended for general use, as OpenSSL is. We don't recommend that third parties depend upon it. Doing so is likely to be frustrating because there are no guarantees of API or ABI stability.

Programs ship their own copies of BoringSSL when they use it and we update everything as needed when deciding to make API changes. This allows us to mostly avoid compromises in the name of compatibility. It works for us, but it may not work for you.

BoringSSL arose because Google used OpenSSL for many years in various ways and, over time, built up a large number of patches that were maintained while tracking upstream OpenSSL. As Google's product portfolio became more complex, more copies of OpenSSL sprung up and the effort involved in maintaining all these patches in multiple places was growing steadily.

Currently BoringSSL is the SSL library in Chrome/Chromium, Android (but it's not part of the NDK) and a number of other apps/programs.

Project links:

To file a security issue, use the Chromium process and mention in the report this is for BoringSSL. You can ignore the parts of the process that are specific to Chromium/Chrome.

There are other files in this directory which might be helpful: