4 Commits

Author SHA1 Message Date
Eric Fiselier
49e2967f27 [libc++] Fix and document visibility attributes for Clang, GCC and Windows.
Summary:
This patch fixes a number of problems with the visibility macros across GCC (on Unix) and Windows (DLL import/export semantics). All of the visibility macros are now documented under `DesignDocs/VisibilityMacros.rst`. Now I'll no longer forget the subtleties of each!

This patch adds two new visibility macros:

* `_LIBCPP_ENUM_VIS` for controlling the typeinfo of enum types. Only Clang supports this.
* `_LIBCPP_EXTERN_TEMPLATE_TYPE_VIS` for redefining visibility on explicit instantiation declarations. Clang and Windows require this.

After applying this patch GCC only emits one -Wattribute warning opposed to 30+.


Reviewers: mclow.lists, EricWF

Subscribers: beanz, mgorny, cfe-commits

Differential Revision: https://reviews.llvm.org/D24602

llvm-svn: 281673
2016-09-15 22:27:07 +00:00
Eric Fiselier
29ada6d178 Use __config_site when building libc++. Also cleanup ABI versioning doc
llvm-svn: 250261
2015-10-14 00:22:05 +00:00
Eric Fiselier
b34aa900fc Fix whitespace in doc
llvm-svn: 250238
2015-10-13 22:22:42 +00:00
Eric Fiselier
f9f796e79b [libcxx] Capture configuration information when installing the libc++ headers
Summary:
Hi all,

This patch is a successor to D11963. However it has changed dramatically and I felt it would be best to start a new review thread.

Please read the design documentation added in this patch for a description of how it works.

Reviewers: mclow.lists, danalbert, jroelofs, EricWF

Subscribers: vkalintiris, rnk, ed, espositofulvio, asl, eugenis, cfe-commits

Differential Revision: http://reviews.llvm.org/D13407

llvm-svn: 250235
2015-10-13 22:12:02 +00:00