On Wed, Jun 06, 2007 at 02:28:25PM -0700, Ed Swierk wrote: > > There is something to be said for target emulation or > > run-parts-of-the-build-on-hardware solutions, but I think the > > best answer is one where any available host can compile Fedora > > for any target. > > Isn't that exactly what we'd get with target emulation? Any available > host that can run an emulator could then build all of fedora Fedora > for ARM or PowerPC or whatever. I think that something like qemu-system-arm is probably one of the very few ways of speeding up package builds while still being able to guarantee that the result is 100% identical. (Although my fastest ARM boxes are probably faster than doing it via qemu.) For the Debian armeb port, what we did for a while is to run all package builds natively, but to have the actual compiling be done on a fast x86 box, by making the ARM board use distcc, and having the x86 box run distccd with an ARM cross-compiler. I don't think this generates 100% identical binary code, but it should still be functionally equivalent. > Supporting cross-compiling would be great, but having spent a several > weeks fighting with Python and its libraries last year and losing, I > suspect scouring the other nine zillion Fedora packages for > cross-correctness is no small exercise, not to mention battling new > bugs as they crop up. I would fully agree with the sentiment that cross-compiling the entire distro as _the_ standard way of maintaining the arch package repository is not a realistic scenario and will likely never be. Preferably, I would like to just keep doing this entirely natively. It appears a lot less effort to maintain a set of patches to make some limited subset of packages (say, 300 packages) cross-compilable, though. In some cases, we'll have to do this anyway. > That said, there is certainly room for both approaches, and getting > even a small number of packages to cross-compile might be enough for > many embedded applications. ACK. -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
