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Python fails to locate system version of ffi when building. We delete bundled version of ffi and build process fail with following error:
error: [Errno 2] No such file or directory: '/builddir/build/BUILD/Python-3.5.1/Modules/_ctypes/libffi'
This is caused by setup.py@1993 checking only for '#define LIBFFI_H' within ffi.h.
Content of /usr/include/ffi.h:
> $ cat /usr/include/ffi.h
/* This file is here to prevent a file conflict on multiarch systems. */
#ifdef ffi_wrapper_h
#error "Do not define ffi_wrapper_h!"
#endif
#define ffi_wrapper_h
#if defined(__i386__)
#include "ffi-i386.h"
#elif defined(__powerpc64__)
#include "ffi-ppc64.h"
#elif defined(__powerpc__)
#include "ffi-ppc.h"
#elif defined(__s390x__)
#include "ffi-s390x.h"
#elif defined(__s390__)
#include "ffi-s390.h"
#elif defined(__x86_64__)
#include "ffi-x86_64.h"
#else
#error "The libffi-devel package is not usable with the architecture."
#endif
#undef ffi_wrapper_h
It is important to note that this content is Fedora specific. As a workaround we (Fedora) use attached patch.
Would it be plausible to accept this patch in upstream?