Thanks for prompting me to look for the issue tracker for hmatrix. I found it here: https://github.com/albertoruiz/hmatrix/issues and my problem is known and is actively being worked on: https://github.com/albertoruiz/hmatrix/issues/100 On Wed, Dec 17, 2014 at 6:59 PM, Carter Schonwald wrote:

did you file a bug report on the hmatrix issue tracker? You'll probably get good support there

On Wed, Dec 17, 2014 at 2:43 PM, Erik Rantapaa wrote:

...

I'm trying to build hmatrix-0.16.1.1 on OSX 10.10.1, and I'm running into some undefined C functions and types in src/C/vector-aux.c:

- struct random_data - random_r() - initstate_r()

A specific error:

src/C/vector-aux.c:738:24: error: variable has incomplete type 'struct random_data' struct random_data buffer;

On a Linux system they seem to be defined in stdlib.h, but that doesn't seem to be the case on OSX.

Is there a way to work around this?

FWIW, I'm using GHC for OSX (https://ghcformacosx.github.io/) and I've installed `gsl` via `brew install gsl`.

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