[PATCH] D55404: [libcxx] Support building static library with hidden visibility

[Petr Hosek via Phabricator]

phosek created this revision.
phosek added reviewers: EricWF, ldionne.
Herald added subscribers: libcxx-commits, christof, mgorny.

This is useful when static libc++ library is being linked into
shared libraries that may be used in combination with libraries.
We want to avoid we exporting libc++ symbols in those cases where
this option is useful. This is provided as a CMake option and can
be enabled by libc++ vendors as needed.


Repository:
  rCXX libc++

https://reviews.llvm.org/D55404

Files:
  libcxx/CMakeLists.txt
  libcxx/lib/CMakeLists.txt

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