[SciPy-user] scipy 0.7.0.dev4373 + atlas FAILED (failures=2, errors=12)

[David Cournapeau]

Xavier Gnata wrote:
> Well from my point of view, it is much harder compile scipy than to 
> compile gcc or a kernel because it looks like black magic :(
>   

No, it's not. Really. On a new debian/Ubuntu machine:

sudo apt-get install g++ gcc g77 atlas3-base-dev python-dev

And then, you can build numpy/scipy, and it will work 100 % of the time. 
What is difficult is to build the dependencies, and people try to build 
them by themselves, or in "weird" configurations.

Try building the kernel with ICC, or try building gcc with a libc which 
is not glibc. For that matter, try to build any software from scratch, 
and you will see it is not easier.

I think we should make it clearer on scipy install pages that you should 
really use the packaged libraries when available. Before, major 
distribution had broken blas/lapack, but those days are mostly over,

cheers,

David