3abd9455a3
So, `depends_on :fortran => :optional` will generate "--with-fortran" rather than "--with-fortranRequired".
25 lines
467 B
Ruby
25 lines
467 B
Ruby
require 'requirement'
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class FortranDependency < Requirement
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fatal true
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default_formula 'gfortran'
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env { ENV.fortran }
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satisfy :build_env => false do
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(ENV['FC'] || which('gfortran')) ? true : false
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end
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def message; <<-EOS.undent
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Fortran is required to install.
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You can install this with Homebrew using:
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brew install gfortran
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Or you can use an external compiler by setting:
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FC=<path-to-fortran-compiler>
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EOS
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end
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end
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