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setup: automatically fallback to pure Python module

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Signed-off-by: Bas Westerbaan <bas@westerbaan.name>
This commit is contained in:
Bas Westerbaan 2013-01-28 12:27:46 +01:00
parent 6a28b28c63
commit 2627b6ae9f
1 changed files with 12 additions and 5 deletions
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17
setup.py
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@ -8,6 +8,9 @@ from setuptools import setup, Extension
from distutils.command.build_ext import build_ext
class NoCython(Exception):
pass
try:
import Cython.Compiler.Main as cython_compiler
have_cython = True
@ -24,10 +27,7 @@ def ensure_source(src):
if not os.path.exists(src):
if not have_cython:
raise Exception("""\
Cython is required for building extension from checkout.
Install Cython >= 0.16 or install msgpack from PyPI.
""")
raise NoCython
cythonize(pyx)
elif (os.path.exists(pyx) and
os.stat(src).st_mtime < os.stat(pyx).st_mtime and
@ -38,7 +38,14 @@ Install Cython >= 0.16 or install msgpack from PyPI.
class BuildExt(build_ext):
def build_extension(self, ext):
ext.sources = list(map(ensure_source, ext.sources))
try:
ext.sources = list(map(ensure_source, ext.sources))
except NoCython:
print "WARNING"
print "Cython is required for building extension from checkout."
print "Install Cython >= 0.16 or install msgpack from PyPI."
print "Falling back to pure Python implementation."
return
return build_ext.build_extension(self, ext)