[llvm-dev] Building LLVM through Bazel

[Chris Lattner via llvm-dev]

> On Aug 14, 2018, at 2:43 PM, David Blaikie via llvm-dev <llvm-dev at lists.llvm.org> wrote:
> 
> Yeah - not sure we're quite at the point where LLVM wants to start supporting two build systems again (used to be Configure+Make and the CMake system, now it's just the Cmake system), but if you want to make it work out-of-tree it shouldn't be too difficult (Google does this internally with the internal version of Bazel). Writing a short BUILD extension for running tblgen should be possible without too much complexity - not sure what Tensorflow is doing that makes its solution so complicated, it doesn't seem like it should be terribly hard, just a genrule to run tblgen and generate the appropriate files from the td files.

Would it be technically possible for cmake to generate bazel files?  If so, it seems that that could be a great bridge, and useful to other projects as well.

-Chris