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name : ibm.py
 import os
import re
import sys
import subprocess

from numpy.distutils.fcompiler import FCompiler
from numpy.distutils.exec_command import find_executable
from numpy.distutils.misc_util import make_temp_file
from distutils import log

compilers = ['IBMFCompiler']

class IBMFCompiler(FCompiler):
    compiler_type = 'ibm'
    description = 'IBM XL Fortran Compiler'
    version_pattern =  r'(xlf\(1\)\s*|)IBM XL Fortran ((Advanced Edition |)Version |Enterprise Edition V|for AIX, V)(?P<version>[^\s*]*)'
    #IBM XL Fortran Enterprise Edition V10.1 for AIX \nVersion: 10.01.0000.0004

    executables = {
        'version_cmd'  : ["<F77>", "-qversion"],
        'compiler_f77' : ["xlf"],
        'compiler_fix' : ["xlf90", "-qfixed"],
        'compiler_f90' : ["xlf90"],
        'linker_so'    : ["xlf95"],
        'archiver'     : ["ar", "-cr"],
        'ranlib'       : ["ranlib"]
        }

    def get_version(self,*args,**kwds):
        version = FCompiler.get_version(self,*args,**kwds)

        if version is None and sys.platform.startswith('aix'):
            # use lslpp to find out xlf version
            lslpp = find_executable('lslpp')
            xlf = find_executable('xlf')
            if os.path.exists(xlf) and os.path.exists(lslpp):
                try:
                    o = subprocess.check_output([lslpp, '-Lc', 'xlfcmp'])
                except (OSError, subprocess.CalledProcessError):
                    pass
                else:
                    m = re.search(r'xlfcmp:(?P<version>\d+([.]\d+)+)', o)
                    if m: version = m.group('version')

        xlf_dir = '/etc/opt/ibmcmp/xlf'
        if version is None and os.path.isdir(xlf_dir):
            # linux:
            # If the output of xlf does not contain version info
            # (that's the case with xlf 8.1, for instance) then
            # let's try another method:
            l = sorted(os.listdir(xlf_dir))
            l.reverse()
            l = [d for d in l if os.path.isfile(os.path.join(xlf_dir, d, 'xlf.cfg'))]
            if l:
                from distutils.version import LooseVersion
                self.version = version = LooseVersion(l[0])
        return version

    def get_flags(self):
        return ['-qextname']

    def get_flags_debug(self):
        return ['-g']

    def get_flags_linker_so(self):
        opt = []
        if sys.platform=='darwin':
            opt.append('-Wl,-bundle,-flat_namespace,-undefined,suppress')
        else:
            opt.append('-bshared')
        version = self.get_version(ok_status=[0, 40])
        if version is not None:
            if sys.platform.startswith('aix'):
                xlf_cfg = '/etc/xlf.cfg'
            else:
                xlf_cfg = '/etc/opt/ibmcmp/xlf/%s/xlf.cfg' % version
            fo, new_cfg = make_temp_file(suffix='_xlf.cfg')
            log.info('Creating '+new_cfg)
            with open(xlf_cfg) as fi:
                crt1_match = re.compile(r'\s*crt\s*=\s*(?P<path>.*)/crt1.o').match
                for line in fi:
                    m = crt1_match(line)
                    if m:
                        fo.write('crt = %s/bundle1.o\n' % (m.group('path')))
                    else:
                        fo.write(line)
            fo.close()
            opt.append('-F'+new_cfg)
        return opt

    def get_flags_opt(self):
        return ['-O3']

if __name__ == '__main__':
    from numpy.distutils import customized_fcompiler
    log.set_verbosity(2)
    print(customized_fcompiler(compiler='ibm').get_version())
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