Replace almost all instances of CMAKE_SOURCE_DIR and CMAKE_BINARY_DIR

If another project includes us as a subproject, as gRPC does,
CMAKE_SOURCE_DIR points to the top-level source directory, not ours.
PROJECT_SOURCE_DIR points to ours. Likewise, CMAKE_BINARY_DIR will
point to the top-level one.

gRPC doesn't consume this CMake build, but in preparation for
eventually unifying the two CMake builds, replace CMAKE_SOURCE_DIR and
CMAKE_BINARY_DIR with a combination of CMAKE_CURRENT_{SOURCE,BINARY}_DIR
and PROJECT_SOURCE_DIR.

There's one more CMAKE_SOURCE_DIR which controls some default install
directory. I've left that one alone for now as I'm not sure what to do
with it. Probably the answer is to, like in gRPC, disable the install
target by default when we're not the top-level source directory.

Bug: 542
Change-Id: Iea26bbef8a4637671fd0e7476101512e871e7e18
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/57686
Reviewed-by: Bob Beck <bbe@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
4 files changed
tree: c2c4557b486d8495398af246b0cb816c776545a3
  1. .github/
  2. cmake/
  3. crypto/
  4. decrepit/
  5. fuzz/
  6. include/
  7. rust/
  8. ssl/
  9. third_party/
  10. tool/
  11. util/
  12. .clang-format
  13. .gitignore
  14. API-CONVENTIONS.md
  15. BREAKING-CHANGES.md
  16. BUILDING.md
  17. CMakeLists.txt
  18. codereview.settings
  19. CONTRIBUTING.md
  20. FUZZING.md
  21. go.mod
  22. go.sum
  23. INCORPORATING.md
  24. LICENSE
  25. PORTING.md
  26. README.md
  27. SANDBOXING.md
  28. sources.cmake
  29. 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: