On Mon, 2024-10-07 at 15:40 +0200, Helmut Grohne wrote: > Hi Steve, > > On Sat, Oct 05, 2024 at 09:01:25AM -0700, Steve M wrote: > > Thank you for testing my package and providing a patch. I would take it as- > > is > > and call it a day, but I am in the middle of switching my upstream source > > from > > Microchip to the Debian package gcc-source as well as switching over to > > using > > the dh sequencer. I don't know what impact this will have on cross building > > so I > > need to be able to reproduce the build errors that you reported. Is there a > > cross build test case that uses amd64 as the host or were they only with > > other > > host architectures? I do have an arm64 and riscv SBC available for me to > > build > > on, it would just take longer than the amd64 host build. > > I fear that at this time cross building in Debian is broken in testing > and unstable for all packages. There is a disagreement between kernel > maintainers and toolchain maintainers in the process of being resolved, > but in the mean time a cross building simply doesn't work at all. Adding > cross-toolchain-base from experimental does make it work somewhat. I > expect it to be resolved within a month and maybe even within a week. > > The good thing about cross building is that you don't actually need > special hardware. Quite the contrary, the point of cross building is to > enable building for arm64 or riscv64 on amd64. gcc-avr is special here, > because it is a compiler itself. In essence, cross building gcc-avr > amounts to a "canadian cross build" (i.e. build, host and target > mutually differ). > > Once cross building works again, you may do one of > > sbuild -d unstable --host=arm64 gcc-avr_*.dsc > pbuilder build --host-arch=arm64 gcc-avr_*.dsc > > on your normal amd64 development machine and the expectation would be > that it builds roughly the same speed as your native build just > producing an arm64 .deb rather than an amd64 one. > > And then as you restructure and the proposed patch no longer is > applicable, please consider closing the bug indicating that the proposed > solution no longer works. That closure should raise my attention and I > may look for a new patch for your restructured gcc-avr package. > > Helmut
Helmut, You reported that the cross compile fails only for certain architecture combinations such as host arm64 cross building for amd64. Indeed, I was able to get this error on my pi5 when using sbuild to cross compile to amd64: cc1plus: error: �~@~X-fcf-protection=full�~@~Y is not supported for this target So I think that is enough for me to use when testing the new build. Thanks -Steve
