Solution for linker errors

[LukasBommes]

I had issues during the build procedure. The linker could not find some symbols. So, it's better to use pkgconfig to let the pkgconfig files decide which additional libraries to install. If someone has the same issue use code below (but alter the location of your ffmpeg build).

from distutils.core import setup, Extension
import pkgconfig
import numpy as np

d = pkgconfig.parse('libavutil libavcodec libavformat libswscale')

coviar_utils_module = Extension('coviar',
        sources = ['coviar_data_loader.c'],
        include_dirs=[np.get_include(), '/home/ffmpeg_build/include/'],
        library_dirs = d['library_dirs'],
        libraries = d['libraries'],
        extra_compile_args=['-DNDEBUG', '-O3'],
        extra_link_args=['-fPIC', '-Wl,-Bsymbolic']
)

setup ( name = 'coviar',
    version = '0.1',
    description = 'Utils for coviar training.',
    ext_modules = [ coviar_utils_module ]
)

[lkhphuc]

Thank you. For those who get '... undefined symbol', add extra_link_args=['-fPIC', '-Wl,-Bsymbolic', '-lavutil', '-lavcodec', '-lavformat', '-lswscale', '-L/home/phuc/pytorch-coviar/ffpmeg-install/lib/'] with the correct path of your install in the end.