Sven van Haastregt ad35f5366a [CMake] Avoid REVERSE on unset variable
If required_libs happens to remain unset, CMake would fail with:

  list sub-command REVERSE requires list to be present.

Fix by ensuring we do not attempt to reverse an unset variable.

Reported by Tu Vuong.

Differential Revision: https://reviews.llvm.org/D51799

llvm-svn: 343088
2018-09-26 10:14:10 +00:00
..
2017-07-21 22:48:47 +00:00

See docs/CMake.html for instructions on how to build LLVM with CMake.