Hans Wennborg e144f87e90 CMake: Turn LLVM_ENABLE_LIBXML2 into a tri-state option
In addition to the current ON and OFF options, this adds the FORCE_ON
option, which causes a configuration error if libxml2 cannot be used.

Differential revision: https://reviews.llvm.org/D40050

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@318209 91177308-0d34-0410-b5e6-96231b3b80d8
2017-11-14 22:32:49 +00:00
..
2017-07-21 22:48:47 +00:00

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