Hi Again, On 11/3/22 21:31, Bojan Smojver via devel wrote: > This may be a trivial question, but my friend Google is not showing me any > obvious answers, so I will ask here at my own peril. > > Say one needs to configure and build the same source with two (or more) > different sets of options that generate different binary RPMs, but which have > files in exactly the same place. This is to support different hardware. The > end result would be mutually conflicting binary packages that users then > install etc. > > Sure, it is easy enough to configure/build repeatedly and stash the results > into non-conflicting paths of buildroot, but how does one then package this > in %files sections into exactly the same paths? > > If there is an example floating somewhere, that would be very useful.
I just realized that my IPU6 plans might be useful for you regardless of if that is your use case too. So the IPU6 userspace bits consist of a bunch of closed source .so files in 2 different variants for 2 different hw generations. Against this a libcamerahal.so gets build, which build is also hw generation specific. And then there is a gstreamer-1.0 plugin which consumes libcamerahal.so, but which build is not hw generation specific (AFAICT, still need to verify this). I want support for both hw generations to be installed at the same time, rather then have 2 conflicting subpackages because I don't want users to have to know which generation they exactly have. And I want this to work with a read-only /usr. So here is what I've come up with (from my own notes, so might be a bit cryptic): -Rename libcamerahal.so to libcamerahal-ipu6<ver>.so and patch in a rpath to /usr/lib64/ipu6<ver> for the other libs, then make libcamerahal.so a symlink to /run/libcamerahal.so which is a symlink to the one we actual want; and have udev-rules dynamically set /run/libcamerahal.so symlink -See: https://github.com/Linuxbrew/legacy-linuxbrew/issues/7 for ideas to set the rpath -Needs something to allow building on non IPU6 systems -> hack .pc file to just always point to the plain (tgl) ipu6 version -Patch hal s|share/defaults/etc|share/defaults/etc/ipu6| for different etc dirs per IPU6 version Maybe the rpath tricks + making the actual lib (or binary) a link to /run/foo and then have a udev rule create /run/foo to point to the right version depending on the hw it is running on might be useful for you too ? Regards, Hans _______________________________________________ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
