from subprocess import PIPE, Popen import sys import re import pytest from numpy.linalg import lapack_lite from numpy.testing import assert_ class FindDependenciesLdd: def __init__(self): self.cmd = ['ldd'] try: p = Popen(self.cmd, stdout=PIPE, stderr=PIPE) stdout, stderr = p.communicate() except OSError: raise RuntimeError(f'command {self.cmd} cannot be run') def get_dependencies(self, lfile): p = Popen(self.cmd + [lfile], stdout=PIPE, stderr=PIPE) stdout, stderr = p.communicate() if not (p.returncode == 0): raise RuntimeError(f'failed dependencies check for {lfile}') return stdout def grep_dependencies(self, lfile, deps): stdout = self.get_dependencies(lfile) rdeps = dict([(dep, re.compile(dep)) for dep in deps]) founds = [] for l in stdout.splitlines(): for k, v in rdeps.items(): if v.search(l): founds.append(k) return founds class TestF77Mismatch: @pytest.mark.skipif(not(sys.platform[:5] == 'linux'), reason="no fortran compiler on non-Linux platform") def test_lapack(self): f = FindDependenciesLdd() deps = f.grep_dependencies(lapack_lite.__file__, [b'libg2c', b'libgfortran']) assert_(len(deps) <= 1, """Both g77 and gfortran runtimes linked in lapack_lite ! This is likely to cause random crashes and wrong results. See numpy INSTALL.txt for more information.""")