tree 892a74cb9a26d441848b9b8b3dfd27df55bf00d9
parent 3320e88ab4c8afe55bf9a71ded2ccc6c2220b8c9
author Mehdi Amini <joker.eph@gmail.com> 1493917734 +0000
committer Mehdi Amini <joker.eph@gmail.com> 1493917734 +0000

Add markup for libc++ dylib availability

Libc++ is used as a system library on macOS and iOS (amongst others). In order
for users to be able to compile a binary that is intended to be deployed to an
older version of the platform, clang provides the
availability attribute <https://clang.llvm.org/docs/AttributeReference.html#availability>_
that can be placed on declarations to describe the lifecycle of a symbol in the
library.

See docs/DesignDocs/AvailabilityMarkup.rst for more information.

Differential Revision: https://reviews.llvm.org/D31739

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@302172 91177308-0d34-0410-b5e6-96231b3b80d8