[CP2K-user] cp2k 7.1 compilation on Cygwin

[Ryan Kingsbury]

Thank you! Removing the -ffast-math flag, I was able to compile both serial 
and parallel (.sopt and .ssmp) versions on Windows 10 via Cygwin. The next 
step is to add CUDA support.

On Tuesday, March 17, 2020 at 4:01:52 AM UTC-7, brhr wrote:
>
>
>>>
> Dear Ryan,
> The -ffast-math flag is no longer supported for recent versions as you can 
> see.
> I've removed the flag from a arch file 
> <https://github.com/brhr-iwao/CP2K_for_Windows/blob/master/Cygwin-i686-gfortran-FFTW3-LIBINT2-SIRIUS.sopt> 
> for recent versions of cp2k, as shown in my github 
> <https://github.com/brhr-iwao/CP2K_for_Windows>.
> It also should be removed from the example 
> <https://www.cp2k.org/howto:compile_on_windows_with_cygwin#compilation_with_cygwin> 
> arch in cp2k HOWTOs...
> Regards,
> Aoyama Iwao 
>
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