Johannes Schauer dixit: >If you were ever involved in porting Debian to a new architecture or >know how a port was done, please do not hesitate to either write me an
For reviving m68k: > - did you cross compile parts of Debian? How much? How hard was it? Only to test kernels and a few userspace issues. I was lucky I could use packages from both etch-m68k (a snapshot of mostly sid at the time when etch was released) and unstable (mostly broken by then) as basis. > - did you natively compile on another distribution (openembedded, > gentoo) No, just on old Debian, peu à peu, until I could get cowbuilder running and create a clean build chroot, after which I rebuilt all not-cleanly-built packages. (I prefer cowbuilder over sbuild a lot!) > - how did you go about finding reduced build dependencies? What were > the heuristics you used? How did you find dependency cycles to break > and how did you pick a solution? Fully manually. I mostly drew ASCII files like this: sourcepkg1 sourcepkg2 sourcepkg3 sourcepkg4 sourcepkg5 sourcepkg3<dup> sourcepkg6 sourcepkg2<cyc> The web view on packages.debian.org was, and still is, a *huge* help for drawing those, especially as it also includes packages from debian-ports unstable in their sid view (I just wish they’d also include d-p unreleased suite in it, even without a link but just an inclusion in the version table would be superb). Then I worked on them from right to left, occasionally patching a huge dependency out or breaking a B-D loop by hand, sometimes also installing older versions of B-Ds manually, or even building versions older than sid but newer than what I had. Sometimes, package maintainers were a huge help in tracking down optional dependencies or things I could turn off for bootstrapping; too bad we still don’t have build profiles in Debian proper. Other times, I did that using human judgment ;) > - how long did the port take you? After about a year, doing this “on the side”, i.e. not concentrating on it a lot, and considering the very slow speed of the systems, most things were working. One has to consider I learned about how Debian really works during that time, too… > - what were the most common bugs you filed when introducing the new > architecture? Dropping of B-D or versioning them proper or making them arch-specific. For some packages (mostly toolchain, some device drivers like libdri) also patch inclusion. Almost all maintainers and the kernel team were very helpful and happy to include arch-specific patches that did not touch MI parts, and some accepted MI patches as well. For some, I went upstream, which took months(!) longer in most cases. > Build-Depends: huge (>= 1.0) [i386 arm] <!embedded !bootstrap>, tiny Yeah, waiting for it… As for the rest, we already talked on the mailing list. bye, //mirabilos -- Sometimes they [people] care too much: pretty printers [and syntax highligh- ting, d.A.] mechanically produce pretty output that accentuates irrelevant detail in the program, which is as sensible as putting all the prepositions in English text in bold font. -- Rob Pike in "Notes on Programming in C" -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/pine.bsm.4.64l.1211202112490.29...@herc.mirbsd.org