How to point LLVM_CONFIG environment variable to the path for llvm-config

Question

I am trying to install numba on an OS X Mountain Lion. I had tried the pip install way but didn't work, so I have downloaded from the GIT respositories the zip files. When trying to install numba I realized that I need LLVM first.

I downloaded and unpacked llvm into the Download folder. The README instructions are: "If your LLVM is installed in a non-standard location, first point the LLVM_CONFIG environment variable to the path of the corresponding llvm-config executable."; a message compatible with the RunTimeError I get when running the python setup.py install command.

My problem is that I don't understand what to do in order to make the LLVM_CONFIG environment variable to point to the corresponding llvm-config executable.

Any help? Thanks

Answer 1

The actual location is reported by brew. For me it was:

==> Caveats
LLVM executables are installed in /usr/local/opt/llvm/bin.
Extra tools are installed in /usr/local/opt/llvm/share/llvm.

Then, e.g.:

LLVM_CONFIG=/usr/local/opt/llvm/bin/llvm-config pip install numba

Answer 2

Ok, I needed to install llvm first. My problem was that I was installing LLVMLITE not LLVM.

So brew install llvm and then locating llvm-config in the Cellar directory solved my problem.