On Mon, 13 Sep 2021 17:39:25 +0200, Helmut Grohne <helmut@subdivi.de> wrote: > I believe I can speak with my "main cross building porter" hat on. > > On Sun, Sep 12, 2021 at 01:57:44PM +0000, Bastien ROUCARIES wrote: > > They are a full color gradiant between: > > - freestanding arches pure cross compile without any depends except > > arch:all > > - partial cross built arch > > - partial arch > > - full arch > > > > I believe the first step to get partial cross built arch is to begin > > by freestanding arch. > > Certainly not. As much as I would love to see this happen, it is very > unrealistic. wine can quite simply use -$arch-cross:all packages like > very other bare metal target and switch to our pipe dream once it is > ready (if ever). And even that assumes that we can get agreement on what $arch should be for Windows targets :-(. > cross building is very far off becoming the thing you want it to be. It > presently has a bus factor of around 1.5. Around 59% of source packages > are cross-satisfiable. Around 78% of cross-satisfiable packages are > cross buildable. In other words: less than 50% of packages are cross > buildable. Beyond that, the cross porters cannot keep up with the > current rate of regressions. Fractions are falling. The bus factor is indeed a problem. For Wine (and even a wider MinGW-w64 ecosystem) we don’t need all that many source packages to be cross-satisfiable for the whole endeavour to be useful... The regressions are significant though: if packages can’t stay cross-satisfiable for Debian cross-targets, there’s little hope they can stay cross-satisfiable for Windows! This means that separate source packages are probably the only viable option. > To make cross building a viable thing we'd need at least three more > porters determined to make it happen. Talk doesn't make it happen. > Patches do. Let me know if you want to help. I'll get you started. Is the process documented anywhere? Or does one simply pick a failure from http://crossqa.debian.net and figure out what’s going wrong (and hope that pulling the threads doesn’t reveal a monster...)? Regards, Stephen
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