OS X with homebrew llvm -- pip install fails

[defjaf]

When I try to install the latest llvmlite 0.6.0 with homebrew llvm 3.6.1, after setting LLVM_CONFIG=/usr/local/Cellar/llvm/3.6.1/bin/llvm-config I get the following error:

    initfini.cpp:9:10: fatal error: 'llvm/Config/config.h' file not found
    #include "llvm/Config/config.h"

It appears that /usr/local/Cellar/llvm/3.6.1/include/llvm/Config/llvm-config.h exists, but not config.h. This can be fixed with a softlink, but it is probably an error either in the homebrew installation or the initfini.cpp file. I have also reported a version of this error to the homebrew repo.

[pitrou]

As I answered on the other bug, this is probably because homebrew builds LLVM using cmake, while llvmlite assumes Unix builds use the autotools (./configure) method.
We could probably do better here. Out of curiosity, can you paste the contents of your llvm-config.h somewhere?

[tamird]

llvm-mirror/llvm@90c2949#diff-b67911656ef5d18c4ae36cb6741b7965R30 suggests that config.h is never intended to be used outside the LLVM build system. llvm-config.h seems to be safe, though.

[pitrou]

Yes, we can probably switch to always use llvm-config.h now that we use LLVM 3.6. config.h was required on autotools builds with LLVM 3.5.