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| -rw-r--r-- | Library/Homebrew/dependencies.rb | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/Library/Homebrew/dependencies.rb b/Library/Homebrew/dependencies.rb index 43596ad6c..de9ed9207 100644 --- a/Library/Homebrew/dependencies.rb +++ b/Library/Homebrew/dependencies.rb @@ -204,3 +204,86 @@ class X11Dependency < Requirement end end + + +class MPIDependency < Requirement + + attr_reader :lang_list + + def initialize *lang_list + @lang_list = lang_list + @non_functional = [] + @unknown_langs = [] + end + + def fatal?; true; end + + def mpi_wrapper_works? compiler + compiler = which compiler + return false if compiler.nil? or not compiler.executable? + + # Some wrappers are non-functional and will return a non-zero exit code + # when invoked for version info. + # + # NOTE: A better test may be to do a small test compilation a la autotools. + quiet_system compiler, '--version' + end + + def satisfied? + @lang_list.each do |lang| + case lang + when :cc, :cxx, :f90, :f77 + compiler = 'mpi' + lang.to_s + @non_functional << compiler unless mpi_wrapper_works? compiler + else + @unknown_langs << lang.to_s + end + end + + @unknown_langs.empty? and @non_functional.empty? + end + + def modify_build_environment + # Set environment variables to help configure scripts find MPI compilers. + # Variable names taken from: + # + # http://www.gnu.org/software/autoconf-archive/ax_mpi.html + lang_list.each do |lang| + compiler = 'mpi' + lang.to_s + mpi_path = which compiler + + # Fortran 90 environment var has a different name + compiler = 'MPIFC' if lang == :f90 + ENV[compiler.upcase] = mpi_path + end + end + + def message + if not @unknown_langs.empty? + <<-EOS.undent + There is no MPI compiler wrapper for: + + #{@unknown_langs.join ', '} + + The following values are valid arguments to `MPIDependency.new`: + + :cc, :cxx, :f90, :f77 + EOS + else + <<-EOS.undent + Homebrew could not locate working copies of the following MPI compiler + wrappers: + + #{@non_functional.join ', '} + + If you have a MPI installation, please ensure the bin folder is on your + PATH and that all the wrappers are functional. Otherwise, a MPI + installation can be obtained from homebrew by *picking one* of the + following formulae: + + open-mpi, mpich2 + EOS + end + end + +end |