I'm trying to use the CFFI package in Python to create a Python interface for already existing C-code.
I am able to compile a C library by following this blog post. Now I want to make it so that this python library is available without any fancy updates to the sys.path.
I found that maybe creating a distribution through Python's setuptools setup() function would accomplish this and I got it to mostly work by creating a setup.py file as such
import os
import sys
from setuptools import setup, find_packages
os.chdir(os.path.dirname(sys.argv[0]) or ".")
setup(
name="SobelFilterTest",
version="0.1",
description="An example project using Python's CFFI",
packages=find_packages(),
install_requires=["cffi>=1.0.0"],
setup_requires=["cffi>=1.0.0"],
cffi_modules=[
"./src/build_sobel.py:ffi",
"./src/build_file_operations.py:ffi",
],
)
, but I run into this error
build/temp.linux-x86_64-3.5/_sobel.c:492:19: fatal error: sobel.h: No such file or directory
From what I can tell, the problem is that the sobel.h file does not get uploaded into the build folder created by setuptools.setup(). I looked for suggestions of what to do including using Extensions() and writing a MANIFEST.in file, and both seem to add a relative path to the correct header files:
MANIFEST.in
setup.py
SobelFilterTest.egg-info/PKG-INFO
SobelFilterTest.egg-info/SOURCES.txt
SobelFilterTest.egg-info/dependency_links.txt
SobelFilterTest.egg-info/requires.txt
SobelFilterTest.egg-info/top_level.txt
src/file_operations.h
src/macros.h
src/sobel.h
But I still get the same error message. Is there a correct way to go about adding the header file to the build folder? Thanks!