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FAQ for users

TL;DR How do I compile the code?

$ python setup [-h]
$ cd build
$ make

How can I specify the compiler?

By default the setup script will attempt GNU compilers. You can specify compilers manually like this:

$ python setup --fc=ifort --cc=icc --cxx=icpc

How can I add compiler flags?

You can do this with --extra-fc-flags, --extra-cc-flags, or --extra-cxx-flags (depending on the set of enabled languages):

$ python setup --fc=gfortran --extra-fc-flags='-some-exotic-flag'

How can I redefine compiler flags?

If you export compiler flags using the environment variables FCFLAGS, CFLAGS, or CXXFLAGS, respectively, then the configuration will use those flags and neither augment them, nor redefine them. Setting these environment variables you have full control over the flags without editing CMake files.

How can I select CMake options via the setup script?

Like this:

$ python setup --cmake-options='"-DTHIS_OPTION=ON -DTHAT_OPTION=OFF"'

We use two sets of quotes because the shell swallows one set of them before passing the arguments to Python. Yeah that's not nice, but nothing we can do about it on the Python side. If you do not use two sets of quotes then the setup command may end up incorrectly saved in build/setup_command.

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