81 lines
2.5 KiB
Python
81 lines
2.5 KiB
Python
"""
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A utility to build a Python extension module from C, wrapping distutils.
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"""
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import py
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# XXX we should distutils in a subprocess, because it messes up the
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# environment and who knows what else. Currently we just save
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# and restore os.environ.
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def make_module_from_c(cfile):
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import os, sys, imp
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from distutils.core import setup
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from distutils.extension import Extension
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debug = 0
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#try:
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# from distutils.log import set_threshold
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# set_threshold(10000)
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#except ImportError:
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# print "ERROR IMPORTING"
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# pass
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dirpath = cfile.dirpath()
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modname = cfile.purebasename
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# find the expected extension of the compiled C module
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for ext, mode, filetype in imp.get_suffixes():
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if filetype == imp.C_EXTENSION:
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break
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else:
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raise ValueError, "cannot find the file name suffix of C ext modules"
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lib = dirpath.join(modname+ext)
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# argl! we need better "build"-locations alltogether!
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if lib.check():
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lib.remove()
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c = py.io.StdCaptureFD()
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try:
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try:
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saved_environ = os.environ.items()
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try:
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lastdir = dirpath.chdir()
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try:
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setup(
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name = "pylibmodules",
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ext_modules=[
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Extension(modname, [str(cfile)])
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],
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script_name = 'setup.py',
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script_args = ['-q', 'build_ext', '--inplace']
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#script_args = ['build_ext', '--inplace']
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)
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finally:
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lastdir.chdir()
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finally:
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for key, value in saved_environ:
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if os.environ.get(key) != value:
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os.environ[key] = value
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finally:
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foutput, foutput = c.done()
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except KeyboardInterrupt:
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raise
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except SystemExit, e:
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raise RuntimeError("cannot compile %s: %s\n%s" % (cfile, e,
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foutput.read()))
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# XXX do we need to do some check on fout/ferr?
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# XXX not a nice way to import a module
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if debug:
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print "inserting path to sys.path", dirpath
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sys.path.insert(0, str(dirpath))
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if debug:
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print "import %(modname)s as testmodule" % locals()
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exec py.code.compile("import %(modname)s as testmodule" % locals())
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try:
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sys.path.remove(str(dirpath))
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except ValueError:
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pass
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return testmodule
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