I have a what looks like this in some directory.
.
├── Makefile
├── mod
│ ├── advancedmath.cpp
│ ├── advancedmath.py
│ ├── __init__.cpp
│ ├── __init__.py
│ ├── main.cpp
│ ├── main.pxd
│ ├── main.pyx
│ ├── mathic.pxd
│ └── mathic.pyx
├── run.py
├── setup.py
└── test.pyx
My setup.py looks like so:
from setuptools import setup, Extension
from Cython.Build import cythonize
from Cython.Compiler import Options as cyopts
from glob import glob
from pathlib import Path
cyopts.cimport_from_pyx = True
def mkcythonexts(base, allowed_ext={'.pyx', '.py'}, allow_cwd=False,
exclude={'setup.py'}):
'''
given a base directory, constructs a cython module for each source file
found within, of a matching extension type
'''
base = Path(base)
exts = []
for src in base.rglob('*.py*'):
if src.suffix not in allowed_ext: continue
name = str(src.parent) + '.' + src.stem
if allow_cwd and src.parent == base:
name = src.stem
elif src.parent == base: continue
if str(src) in exclude: continue
print('INFO found matching source', src, name)
exts += [Extension(name, [str(src)], language='c++')]
return cythonize(exts, annotate=False)
setup(
name = None,
ext_modules = mkcythonexts(Path('.'), allow_cwd=True,
exclude=['setup.py']),
include_dirs=['.']
)
What I'm doing is compiling each *.pyx file in mod/ as well as in . using Cython. My run.py file is pure-python, and it includes a call to the body of test.pyx.
All of this works fine with python3 setup.py build_ext --inplace. However, when I modify my cython call like so:
return cythonize(exts, annotate=False,
compiler_directives={'language_level': '3'})
the compiler complains:
Compiling run.py because it changed.
Compiling test.pyx because it changed.
Compiling mod/main.pyx because it changed.
Compiling mod/mathic.pyx because it changed.
[1/4] Cythonizing mod/main.pyx
Error compiling Cython file:
------------------------------------------------------------
...
from __future__ import print_function
cimport mathic
^
------------------------------------------------------------
mod/main.pyx:3:8: 'mathic.pxd' not found
Traceback (most recent call last):
File "setup.py", line 34, in <module>
exclude=['setup.py']),
File "setup.py", line 29, in mkcythonexts
compiler_directives={'language_level': '3'})
File "/home/?/.local/lib/python3.5/site-packages/Cython/Build/Dependencies.py", line 1096, in cythonize
cythonize_one(*args)
File "/home/?/.local/lib/python3.5/site-packages/Cython/Build/Dependencies.py", line 1219, in cythonize_one
raise CompileError(None, pyx_file)
Cython.Compiler.Errors.CompileError: mod/main.pyx
Seemingly, everything breaks just because I request python3 syntax. I do not understand what's causing this. I tried playing with making it a kwarg, language_level= to cythonize instead of a compiler directive, with no luck. Removing that bit simply makes the error go away.
