commit 9feb945a666f2a9b4298290847da69b0a37cd948
author Louis Dionne <ldionne@apple.com> Tue Aug 13 15:02:53 2019 +0000
committer Louis Dionne <ldionne@apple.com> Tue Aug 13 15:02:53 2019 +0000
tree 0654c6a702bb58715f99a195812269f6ddd64ad7
parent e1c08e781c027195d4aa03bae37e38b4426a4e03

[libc++] Always build with -fvisibility=hidden

Summary:
This avoids symbols being accidentally exported from the dylib when they
shouldn't. The next step is to use a pragma to apply hidden visibility
to all declarations (unless otherwise specified), which will allow us
to drop the per-declaration hidden visibility attributes we currently
have.

This also has the nice side effect of making sure the dylib exports the
same symbols regardless of the optimization level.

PR38138

Reviewers: EricWF, mclow.lists

Subscribers: mgorny, christof, jkorous, dexonsmith, libcxx-commits

Tags: #libc

Differential Revision: https://reviews.llvm.org/D62868

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@368703 91177308-0d34-0410-b5e6-96231b3b80d8