homepage

Compilation of python for foreign target platform problem.
Host arch is x86_64, target arch is arm (arm32).
Configuration is (target arch part):
 (cd build-python && \
 DESTDIR=${SYSROOT} \
 PKG_CONFIG=true \
 LIBFFI_INCLUDEDIR= \
 PATH=${CURDIR}/host-python-home/bin:$$PATH \
 PYTHONHOME=${CURDIR}/host-python-home/lib \
 PYTHONPATH=${CURDIR}/host-python-home/lib/python3.5 \
 ../cpython/configure \
 --host=${TARGET_CROSS} \
 --build=${BUILD_M_ARCH}-unknown-linux-gnu \
 --prefix=/usr \
 --sysconfdir=/etc \
 --localstatedir=/var \
 --enable-shared \
 --disable-ipv6 \
 --with-system-ffi \
 --with-system-expat \
 --without-ensurepip \
 --cache-file=config.cache\
 )
 sed -e 's/#define HAVE_ATTRIBUTE_FORMAT_PARSETUPLE 1/#undef HAVE_ATTRIBUTE_FORMAT_PARSETUPLE/' -i build-python/pyconfig.h
 sed -e '/^PGEN=/ s|=.*$$|=\t\t${CURDIR}/build-python-native/Parser/pgen|' -e '/^LDFLAGS=/ s|=.*$$|=\t\t-L.|' -e '/^\$$(PGEN):/,+1d' -e '/^LIBFFI_INCLUDEDIR=/ s|=.*$$|=|' -i build-python/Makefile
Problem: option -I/usr/include passed to compiler during modules compilation. This lead to fails, due to target platform is different from host.
Suggested patch resolve the issue for me.
BTW, pass -I/usr/include is useless even for native builds.