Chris@87: from __future__ import division, absolute_import, print_function
Chris@87: 
Chris@87: from subprocess import call, PIPE, Popen
Chris@87: import sys
Chris@87: import re
Chris@87: 
Chris@87: import numpy as np
Chris@87: from numpy.linalg import lapack_lite
Chris@87: from numpy.testing import TestCase, dec
Chris@87: 
Chris@87: from numpy.compat import asbytes_nested
Chris@87: 
Chris@87: class FindDependenciesLdd(object):
Chris@87:     def __init__(self):
Chris@87:         self.cmd = ['ldd']
Chris@87: 
Chris@87:         try:
Chris@87:             p = Popen(self.cmd, stdout=PIPE, stderr=PIPE)
Chris@87:             stdout, stderr = p.communicate()
Chris@87:         except OSError:
Chris@87:             raise RuntimeError("command %s cannot be run" % self.cmd)
Chris@87: 
Chris@87:     def get_dependencies(self, lfile):
Chris@87:         p = Popen(self.cmd + [lfile], stdout=PIPE, stderr=PIPE)
Chris@87:         stdout, stderr = p.communicate()
Chris@87:         if not (p.returncode == 0):
Chris@87:             raise RuntimeError("failed dependencies check for %s" % lfile)
Chris@87: 
Chris@87:         return stdout
Chris@87: 
Chris@87:     def grep_dependencies(self, lfile, deps):
Chris@87:         stdout = self.get_dependencies(lfile)
Chris@87: 
Chris@87:         rdeps = dict([(dep, re.compile(dep)) for dep in deps])
Chris@87:         founds = []
Chris@87:         for l in stdout.splitlines():
Chris@87:             for k, v in rdeps.items():
Chris@87:                 if v.search(l):
Chris@87:                     founds.append(k)
Chris@87: 
Chris@87:         return founds
Chris@87: 
Chris@87: class TestF77Mismatch(TestCase):
Chris@87:     @dec.skipif(not(sys.platform[:5] == 'linux'),
Chris@87:                 "Skipping fortran compiler mismatch on non Linux platform")
Chris@87:     def test_lapack(self):
Chris@87:         f = FindDependenciesLdd()
Chris@87:         deps = f.grep_dependencies(lapack_lite.__file__,
Chris@87:                                    asbytes_nested(['libg2c', 'libgfortran']))
Chris@87:         self.assertFalse(len(deps) > 1,
Chris@87: """Both g77 and gfortran runtimes linked in lapack_lite ! This is likely to
Chris@87: cause random crashes and wrong results. See numpy INSTALL.txt for more
Chris@87: information.""")