tree 131c305ccfd0c318ba0eaf3a4e4da338edad1244
parent edbdc240ecb6a2d5a500b8e2eedfe3e6a2423c0a
author David Benjamin <davidben@google.com> 1650316827 -0400
committer Boringssl LUCI CQ <boringssl-scoped@luci-project-accounts.iam.gserviceaccount.com> 1650475430 +0000

Try to require C++14.

Now that we've dropped MSVC 2015, I believe we can rely on C++14 (which
is now seven years old). This switches the build to require C++14. I've
gone ahead and switched code in both public headers and within the
library, but if the public headers are a problem, we can revert those
separately.

C++14 doesn't get us quite as much as C++17, but see if we can get to
C++14 first. Still, std::enable_if_t and the less restricted constexpr
are nice wins.

Update-Note: C++14 is now required to build BoringSSL. If the build
breaks, make sure your compiler is C++14-capable and is not passing
-std=c++11. If this is causing problems for your project, let us know.

Change-Id: If03a88e3f8a11980180781f95b806e7f3c3cb6c3
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/52246
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>