Building with OpenBLAS/BLIS about dftd4

[awvwgk]

We need to add an explicit case for both libraries with the la_backend option. Should be fc.find_library('openblas') and fc.find_library('blis') in meson.build than.

I will give it a try when I am done with #4. But feel free to open a pull request.

[zerothi]

Please don't do find_library('openblas') the problem is that sometimes the suffix for the libraries depend on the threading in the library.

Any kind of overwriting with env-vars would be greatly appreciated :)
Or do the above find_library, but also the env-var ;)

Thanks!

(PS. I have never done a project in Meson, so I can't be of much help)

[awvwgk]

meson has a rather explicit style for the configuration, usually you are not supposed to set environment variable other than the compilers.

Could you be more specific on what you need? I could implement a get_option('la_backend') == 'custom' and a list with user-provided paths at configure time that will be used for linking, is this more suitable?

Since I am usually working with MKL I have not much experience with OpenBLAS.

[zerothi]

Yes, this would be ideal.
Basically it would be nice to:

1. Specify an additional library path (LD_LIBRARY_PATH) or an explicit -L<path> added to the compilation line
2. Specify an additional library used at the linking step, -lopenblas_omp for instance. :)