[rust] Tell Cargo to link cpp runtime library

https://boringssl-review.googlesource.com/c/boringssl/+/66288
allowed C++ runtime in libssl. The build script of bssl-sys crate
should indicate that the crate requires a C++ runtime. Use
libc++ on MacOS and libstdc++ on other unix like systems by
default. Introduce a new environment variable to configure C++
runtime to use.

Change-Id: Ib445955012126080dd03ad7b650287ea9dde10b0
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/67147
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
1 file changed
tree: e5c381b1d19e7c73d7fc834b5e30cef3d367fc3d
  1. .github/
  2. cmake/
  3. crypto/
  4. decrepit/
  5. fuzz/
  6. gen/
  7. include/
  8. pki/
  9. rust/
  10. ssl/
  11. third_party/
  12. tool/
  13. util/
  14. .clang-format
  15. .gitignore
  16. API-CONVENTIONS.md
  17. BREAKING-CHANGES.md
  18. build.json
  19. BUILDING.md
  20. CMakeLists.txt
  21. codereview.settings
  22. CONTRIBUTING.md
  23. FUZZING.md
  24. go.mod
  25. go.sum
  26. INCORPORATING.md
  27. LICENSE
  28. PORTING.md
  29. README.md
  30. SANDBOXING.md
  31. 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:

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