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import os
class VerificationError(Exception):
""" An error raised when verification fails
"""
class VerificationMissing(Exception):
""" An error raised when incomplete structures are passed into
cdef, but no verification has been done
"""
def get_extension(srcfilename, modname, sources=(), **kwds):
from distutils.core import Extension
allsources = [srcfilename]
allsources.extend(sources)
return Extension(name=modname, sources=allsources, **kwds)
def compile(tmpdir, ext):
"""Compile a C extension module using distutils."""
saved_environ = os.environ.copy()
try:
outputfilename = _build(tmpdir, ext)
outputfilename = os.path.abspath(outputfilename)
finally:
# workaround for a distutils bugs where some env vars can
# become longer and longer every time it is used
for key, value in saved_environ.items():
if os.environ.get(key) != value:
os.environ[key] = value
return outputfilename
def _build(tmpdir, ext):
# XXX compact but horrible :-(
from distutils.core import Distribution
import distutils.errors
#
dist = Distribution({'ext_modules': [ext]})
options = dist.get_option_dict('build_ext')
options['force'] = ('ffiplatform', True)
options['build_lib'] = ('ffiplatform', tmpdir)
options['build_temp'] = ('ffiplatform', tmpdir)
#
try:
dist.run_command('build_ext')
except (distutils.errors.CompileError,
distutils.errors.LinkError) as e:
raise VerificationError('%s: %s' % (e.__class__.__name__, e))
#
cmd_obj = dist.get_command_obj('build_ext')
[soname] = cmd_obj.get_outputs()
return soname
try:
from os.path import samefile
except ImportError:
def samefile(f1, f2):
return os.path.abspath(f1) == os.path.abspath(f2)
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