def _is_present(self):
r"""
Run test code to determine whether the shared library is present.
EXAMPLES::
sage: from sage.features import CythonFeature
sage: empty = CythonFeature("empty", test_code="")
sage: empty.is_present()
FeatureTestResult('empty', True)
"""
from sage.misc.temporary_file import tmp_filename
with open(tmp_filename(ext=".pyx"), 'w') as pyx:
pyx.write(self.test_code)
from sage.misc.cython import cython_import
try:
cython_import(pyx.name, verbose=-1)
except CCompilerError:
return FeatureTestResult(self,
False,
reason="Failed to compile test code.")
except ImportError:
return FeatureTestResult(self,
False,
reason="Failed to import test code.")
except Exception:
return FeatureTestResult(self,
False,
reason="Failed to run test code.")
return FeatureTestResult(self,
True,
reason="Test code compiled and imported.")
def _is_present(self):
r"""
Run test code to determine whether the shared library is present.
EXAMPLES::
sage: from sage.features import CythonFeature
sage: empty = CythonFeature("empty", test_code="")
sage: empty.is_present()
FeatureTestResult('empty', True)
"""
from sage.misc.temporary_file import tmp_filename
with open(tmp_filename(ext=".pyx"), 'w') as pyx:
pyx.write(self.test_code)
from sage.misc.cython import cython_import
try:
cython_import(pyx.name, verbose=-1)
except CCompilerError:
return FeatureTestResult(self, False, reason="Failed to compile test code.")
except ImportError:
return FeatureTestResult(self, False, reason="Failed to import test code.")
except Exception:
return FeatureTestResult(self, False, reason="Failed to run test code.")
return FeatureTestResult(self, True, reason="Test code compiled and imported.")