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[libcxx] Allow building both shared and static library

Authored by phosek on Aug 5 2016, 4:34 PM.



This change allows building both shared and static version of libc++ in a single build, sharing object files between both versions.

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phosek updated this revision to Diff 67046.Aug 5 2016, 4:34 PM
phosek retitled this revision from to [libcxx] Allow building both shared and static library.
phosek updated this object.
phosek added a subscriber: llvm-commits.
Eugene.Zelenko set the repository for this revision to rL LLVM.
compnerd added inline comments.Aug 6 2016, 10:20 AM
188 ↗(On Diff #67046)

Im not sure I understand this. Couldn't you build both static and shared versions, and therefore, need both branches?

phosek added inline comments.Aug 6 2016, 4:46 PM
188 ↗(On Diff #67046)

These are just link dependencies for libc++experimental.a, libc++.a and` will get build in any case (see the cxx meta-target). Using both branches here imply lib/libc++.a -lc++ as link dependency which is most certainly incorrect. In fact, it seems that CMake ignores link dependencies for static libraries (which is a correct behavior) so this entire block can be safely removed.

compnerd accepted this revision.Aug 7 2016, 10:14 PM
compnerd edited edge metadata.
compnerd added inline comments.
188 ↗(On Diff #67046)

Ah, missed the explicit static on the cxx_experimental.

This revision is now accepted and ready to land.Aug 7 2016, 10:14 PM
This revision was automatically updated to reflect the committed changes.