On Thu, 2012-02-23 at 10:38 +0000, Neil Williams wrote: > On Thu, 23 Feb 2012 10:53:13 +0100 > Svante Signell <[email protected]> wrote: > > > Hi, > > > > I found some Debian tools to create .deb packages available, like > > pdebuild-cross, buildcross, xapt, xdeb, dpkg-cross, most of them > > developed by emdebian. According to your web pages all these tools seems > > to create GNU/Linux packages for a specific CPU using GNU/Linux as > > build/host environment. Are there tools available also for another OS, > > in my case GNU/Hurd. > > A change of kernel is a change of architecture. However, there has been > no testing of cross-compiling on anything other than i386-linux, > amd64-linux and powerpc-linux. i.e. whatever cross targets are > available from Emdebian, they are all Linux build & host.
OK, got it. > There is no hurd support in either Debian or Emdebian except hurd-i386. Right! > > Up til now I have created a cross build environment with gcc-4.4, > > eglibc-2.13, gnumach and hurd libraries, etc. Next step would be to > > create .debs for the target architecture. > > What is the target architecture? arm-linux-gnueabi (armel) ? Target architecture is hurd-i386. Nothing new here. > Are you trying to invent an ARM Hurd architecture? This is NOT > supported by dpkg currently. No! > # Bidirectional mapping between a Debian triplet and a Debian arch. > # > # Supported variables: <cpu> > # > # <Debian triplet> <Debian arch> > gnu-hurd-<cpu> hurd-<cpu> This is the one. > Debian only supports Hurd for i386 (hurd-i386). I know. > Are you trying to create hurd-arm ? If so, look at the dpkg sources and > work out what the architecture values would need to be. Which ARM CPU > are you targeting? No, still the old i386. > > I know most packages can be > > built natively, but not all, like gnat, etc. > > Those which don't build natively for hurd have zero chance of > cross-building for hurd and might not even cross-build on hurd for > a linux target. Well, I'm on the way of getting the gnat tools and libraries built and ported to GNU/Hurd to be able to build all ADA-related packages for GNU/Hurd natively. > > - what is missing from the built toolset so far (binutils, etc) > > - any emdebian tools usable for this, i.e. for cross OS package > > building? > > It's not cross-OS, it's a kernel & architecture issue and that comes > down to whether the cross-compiler can be a) built with the alternative > kernel headers Yes! > and b) use those headers in preference to the other > kernel within a cross-build and Yes! > c) whether dpkg can recognise the new > architecture. Yes, see above! So the emdebian cross tools are only cross CPU, not cross OS, right? > What are you trying to do? > > 0: Use a GNU/Hurd machine to cross-build for devices running linux? > Which CPU? No! > 1: Use a linux machine to cross-build for devices running Hurd? (No > idea whether Hurd even runs on machines which would be the target of a > cross-build). Again, which CPU? Yes, and CPU is i386. Haven't tried a cross-built boot of Hurd, that requires much more work than I've done so far. Hurd runs natively on x86 boxes, where the hardware is supported, and in VMs, like qemu/kvm I use. a) I just asked about creating target .debs using the cross built tools instead of just binaries. b) And to enable support for gnat in GNU/Hurd, either as a deb or binaries created by the cross-build environment and copied to the target for native .deb builds there. > 2: Use a Hurd machine to cross-build for devices running Hurd. See 1. No! > 3: Natively build Hurd packages on a Hurd machine - in which case, you > don't need anything from Emdebian. No! Thanks for your prompt reply :) -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
