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"""MPI compiler knowledgebase.

MPI compilers are a special case for several reasons including:
    1) No binary compatibility guarantee among MPI compilers.
    2) They're almost always wrappers, not actual compilers.
    3) They almost always depend on CPU compilers.
    
We keep a separate knowledge base for MPI compilers to simplify compiler
identification and because TAU doesn't require MPI for all configurations.
"""
from taucmdr.cf.compiler import Knowledgebase


MPI_COMPILERS = Knowledgebase('MPI', 'Compilers supporting the Message Passing Interface (MPI)',
                              CC=('MPI C', 'MPI_CC'),
                              CXX=('MPI C++', 'MPI_CXX'),
                              FC=('MPI Fortran', ('MPI_FC', 'MPI_F77', 'MPI_F90')))

SYSTEM = MPI_COMPILERS.add('System', show_wrapper_flags=['-show'],
                           CC='mpicc', 
                           CXX=('mpic++', 'mpicxx', 'mpiCC'), 
                           FC=('mpiftn', 'mpif90', 'mpif77', 'mpifort'))

INTEL = MPI_COMPILERS.add('Intel', show_wrapper_flags=['-show'],
                          CC='mpiicc', 
                          CXX='mpiicpc', 
                          FC='mpiifort')

IBM = MPI_COMPILERS.add('IBM', family_regex=r'^IBM XL',
                        version_flags=['-qversion'],
                        show_wrapper_flags=['-show'],
                        CC=('mpixlc_r', 'mpixlc', 'mpicc'), 
                        CXX=('mpixlcxx_r', 'mpixlcxx', 'mpixlC_r', 'mpic++', 'mpicxx', 'mpiCC'),
                        FC=('mpixlf_r', 'mpixlf', 'mpixlf90_r', 'mpixlf90', 'mpixlf95_r', 'mpixlf95', 
                            'mpixlf2003_r', 'mpixlf2003', 'mpixlf2008_r', 'mpixlf2008', 'mpixlf77_r', 'mpixlf77', 
                            'mpifort', 'mpif90', 'mpif77'))

CRAY = MPI_COMPILERS.add('Cray', family_regex=r'-I.*cray', 
                         version_flags=['-craype-verbose', '--version', '-E'],
                         show_wrapper_flags=['-craype-verbose', '--version', '-E'],
                         CC='cc', CXX='CC', FC='ftn')

MPI_CC = MPI_COMPILERS.roles['CC']
MPI_CXX = MPI_COMPILERS.roles['CXX']
MPI_FC = MPI_COMPILERS.roles['FC']

