Define BORINGSSL_201510.

I've used these defines to easy the update of BoringSSL in Android
because Android's external/boringssl is a different git repository from
the rest of Android and thus it's not possible to land changes the
atomically update several things at once.

For this I tended just to add this define in the Android copy of
BoringSSL, but we're starting to see that bleed into other situations
now so it's looking like this will be generally useful.

These defines may be added when useful but shouldn't build up: once the
change has been done, the #if'ed code elsewhere that uses it should be
cleaned up. So far, that's worked ok. (I.e. we've had a BORINGSSL_201509
that correctly disappeared.)

Change-Id: I8cbb4731efe840cc798c970d37bc040b16a4a755
Reviewed-by: David Benjamin <>
Reviewed-by: Adam Langley <>
1 file changed
tree: c1b6aa1fef1625c7dabd4e53b12e7b487ff9755e
  1. .clang-format
  2. .gitignore
  4. CMakeLists.txt
  9. codereview.settings
  10. crypto/
  11. decrepit/
  12. include/
  13. ssl/
  14. tool/
  15. util/


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.

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

  • how to port OpenSSL-using code to BoringSSL.
  • how to build BoringSSL
  • rules and guidelines for coding style.
  • include/openssl: public headers with API documentation in comments. Also available online.