[Cython] Fwd: Question about how best require compiler options for C sources

[Ian Henriksen]

On Mon, Apr 11, 2016 at 11:50 AM Ian Henriksen <
insertinterestingnamehere at gmail.com> wrote:

> To answer the original question about define macros, it appears that the
> canonical
> way to pass preprocessor defines through distutils is to use the
> define_macros
> keyword when constructing your Extension class. You should also be able to
> do
> this within a Cython source file by including a directive like:
>
> # distutils: define_macros = MY_DEFINE, MY_DEFINE_2=2
>
> Unfortunately, it looks like there's a bug in that that's making it so
> that these
> macros are undef'ed rather than being defined, so, for now, just pass the
> appropriate flags to your Extension object.
>
>
Small update on this, it looks like the issue with undef/define only
applies when a
define is specified this way without a value, so I either haven't gotten
the syntax quite
right, or that's not supported yet. Specifying an actual value for the
macro works fine.

Best,
Ian Henriksen
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