New submission from Joshua Kinard <ku...@gentoo.org>: I'm attempting to get Python to cross-compile, and I'm not sure if this is an actual flaw in the build system or not, but thought I'd detail what I can here and seek comment from those in the know.
What happens is under a cross-environment setup on a Gentoo installation (using our sys-devel/crossdev and sys-devel/crossdev-wrappers package), when cross-compiling from x86_64-pc-linux-gnu to mipsel-unknown-linux-gnu, the Python build process fails to build several modules/extensions. I believe that part of the problem with building the extensions is on our end, and is a separate item I'll track down myself. But there is one module in particular that looks tied to Python's core that's getting a cross-compile error: _socket. What happens is, somehow, the configure script (or setup.py) is defining HAVE_SYS_PARAM_H, which pulls in sys/param.h -- I think this is normal, but for socketmodule.c, that particular call by the Makefile passes in -I/usr/include along with the other -I calls defining the cross-include directories. The mipsel cross-compiler then references x86_64-specific assembler code within the sys/param.h copy in /usr/include, and fails. Generally, our crossdev-wrappers package sets up the buil environment and overrides a lot of the common variables to use the cross-toolchain. So far, it looks like only socketmodule.c is affected with the rogue -I/usr/include getting pulled in. I haven't had much luck trying to track down just how Python's build system is tied into autotools to see where it's picking up /usr/include from. Already tried patching setup.py some, as well as passing --oldincludedir to configure, but neither approach worked. I'm hoping that this is either a minor bug in the build system, or we're missing a specific variable to be passed to the make process so that -I/usr/include doesn't get defined. Not sure which, so if there's any other ideas to try, I'm all ears! ---------- components: Build messages: 83008 nosy: kumba severity: normal status: open title: Cross-compiling Python type: compile error versions: Python 2.5 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue5404> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
