llvm-project/lldb/cmake/caches
Jonas Devlieghere 45e598d135 [CMake] Update CMAKE_OSX_DEPLOYMENT_TARGET to 10.12.
After LLVM moved to C++14, the RWMutex implementation was removed in
favor of std::shared_timed_mutex, which is only available on macOS
10.12 and later. As a workaround for older deployment targets, I added
   the original RWMutexImpl again, guarded by the deployment target.

When doing a standalone build of LLDB using the Xcode generator, the
CMake cache specifies a minimum deployment target. However, LLVM and
Clang might have been built with a different minimum deployment target.

This is exactly what happened for the Xcode build. LLVM was built with a
minimum deployment target newer than 10.12, using
std::shared_timed_mutex. LLDB on the other hand was built with a minimum
deployment target of 10.11, using the old RWMutexImpl, resulting in
undefined symbols at link-time.

This patch changes the minimum deployment target for the Xcode build to
10.12 to work around this problem. A better solution would involve
synchronizing the minimum deployment or even not setting one at all.

llvm-svn: 369220
2019-08-18 21:54:26 +00:00
..
Apple-lldb-Linux.cmake [CMake] Add Apple-lldb-Linux.cmake cache 2019-07-10 15:59:56 +00:00
Apple-lldb-Xcode.cmake [CMake] Update CMAKE_OSX_DEPLOYMENT_TARGET to 10.12. 2019-08-18 21:54:26 +00:00
Apple-lldb-base.cmake [CMake] Polish Apple-lldb caches 2019-07-10 15:59:50 +00:00
Apple-lldb-macOS.cmake [CMake] Polish Apple-lldb caches 2019-07-10 15:59:50 +00:00