How can I include my_math/clog.h
properly in the package my_math
to let tox
pass the py.test
suite?
Project file structure:
my_math/__init__.py
my_math/clog.h
my_math/clog.pxd
my_math/integrate.pyx
setup.py
tests/__init__.py
tests/test_log.py
tox.ini
my_math/clog.h
#include <python.h>
#include <math.h>
#if PY_VERSION_HEX < 0x3050000 && (defined(_WIN32) || defined(_WIN64))
// Calculates log2 of number
double log2(double n);
{
// log(n)/log(2) is log2
double log_2 = 0.693147180559945309417232121458176568075500134360255254120680;
return log(n) / log_2;
}
#endif
my_math/integrate.pyx
def extern from "clog.h":
double log2(double)
def call_log2(n):
return log2(n)
setup.py
import os
from setuptools import setup, Extension
from setuptools.dist import Distribution
from Cython.Distutils import build_ext
Distribution(dict(setup_requires='Cython'))
ext_modules = [
Extension("my_math.integrate", ["my_math/integrate.pyx"],
include_dirs=['my_math'], # path to .h file(s)
library_dirs=['my_math'], # path to .a or .so file(s)
# libraries=['clog'],
extra_compile_args = ['-I/usr/local/include',
'-L/usr/local/lib'],
depends=['my_math/clog.h']
)
]
setup(
name='my_math',
package_dir={'my_math': 'my_math'},
packages=['my_math'],
include_package_data=True,
package_data={'': ['*.pyx', '*.pxd', '*.h', '*.c']},
cmdclass = {'build_ext': build_ext},
ext_modules=ext_modules
)
tests/test_log.py
from pytest import approx
from my_math.integrate import call_log2
def test_call_log2():
assert approx(call_log2(100)) == 6.64386
tox.ini
[tox]
envlist = py36
[testenv]
deps = cython
pytest
commands = python setup.py build_ext --inplace
py.test tests
my_math/__init__.py
and tests/__init__.py
are empty.
I run python3 setup.py build_ext --inplace
without any glitches.
I can call the function call_log2
directly:
python3 -c 'from my_math.integrate import call_log2; print(call_log2(100))'
6.643856189774724
But not with tox
:
clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -Imy_math -I/usr/local/Cellar/python3/3.6.0/Frameworks/Python.framework/Versions/3.6/include/python3.6m -c my_math/integrate.c -o build/temp.macosx-10.11-x86_64-3.6/my_math/integrate.o -I/usr/local/include -L/usr/local/lib
clang: warning: argument unused during compilation: '-L/usr/local/lib'
my_math/integrate.c:432:10: fatal error: 'clog.h' file not found
#include "clog.h"
^
1 error generated.
error: command 'clang' failed with exit status 1
If I uncomment # libraries = ['clog'],
a fresh python3 setup.py build_ext --inplace
will produce a ld: library not found for -lclog
error.
Resolved through corrected MANIFEST.in
:
global-include *.txt *.rst *.pyx *.pxd *.c *.h
setup.py
:
'': ['data/*', '*.pyx', '*.pxd', '*.c', '*.h']
MANIFEST.in
and setup.py
must both cover all file patterns to support bdist
and sdist
.
Related: How to include package data with setuptools/distribute?
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With