On Tue, Aug 30, 2016 at 09:27:25AM -0500, Derek Foreman wrote: > On 30/08/16 06:09 AM, Emil Velikov wrote: > > Hi all, > > > > On 29 August 2016 at 20:23, Derek Foreman <[email protected]> wrote: > >> Hi Bryce, > >> > >> On 26/08/16 08:11 PM, Bryce Harrington wrote: > >>> On Fri, Aug 26, 2016 at 06:06:43PM -0700, Bryce Harrington wrote: > >>>> It is confusing terminology to call this 'uninstalled'; sounds like this > >>>> might remove something from your system. 'non-installed' would be more > >>>> accurate but isn't that great of a name either. > >>> > >>> Oh I see, this is pre-existing terminology in wayland. Still not the > >>> best terminology but given there's precident I suppose this should be > >>> named consistently. > >> > >> It's actually a standard pkg-config convention. if lala-uninstalled.pc > >> and lala.pc are both visible to pkg-config it will pick the -uninstalled > >> one first. > >> > >> It's for building/linking with uninstalled copies of libraries out of > >> their build trees. > >> > > Having gone through the pkg-config documentation, I have some > > questions on the topic: > > > > - How should one link/use 'uninstalled' version of package ? > > cd wayland > > cd build/wayland > > ../../wayland/autogen.sh && make > > export PKG_CONFIG_PATH=... > > cd ../$projectA > > ../../$projectA/autogen.sh && make > > Yup. (You'll still need to set up LD_LIBRARY_PATH and PATH if you want > to run the stuff from those dirs) > > > - Why would someone opt for such an approach ? I haven't seen such > > workflow so far. > > gstreamer has scripts to automate that approach... > > Reynaldo's working on a patch for wayland-build-tools to add a script > similar to one provided with gstreamer (gst-uninstalled). We should be > submitting that for review later today. > > You clone all the relevant repositories (wayland, wayland-protocols, > libinput, weston) under lalaroot/whatever/ > > setup the script (tell it the lalaroot location, and make a symlink to > it called wl-whatever). Now when you run wl-whatever it starts a new > shell with LD_LIBRARY_PATH, PATH, and PKG_CONFIG_PATH set up so that you > can compile against and run the projects uninstalled from that set of > git working directories. > > The symlinks allow you to set up multiple directories under lalaroot > (git, release, tags, etc...) and run the appropriate link to the script > to test a different set of working directories. > > (obviously weston-launch will never be setuid when not running make install) > > > - Considering the bug in the scanner -uninstalled file, plus the fact > > that (almost?) all of X related packages don't have such files - is it > > really that useful and/or used ? > > I'm honestly not sure if anyone uses this stuff right now. I think the > scanner error leads to wayland-scanner being used on $PATH instead of an > outright build failure, so it may not be a clear indication that nobody > is using this. But it probably is :)
I suspect that bit fixes an actual bug. I recall I think on 14.04 that the system wayland-scanner was incompatible with current, so building weston git on such a system would not work without first ensuring wayland-scanner was somehow available to the build system. For which there's various ways to solve it, but I gather that this proposed change would fix it somewhat more transparently to the user. At the least, it might provide an additional option, and having options is good. > I'd rather see them fixed (and added) than have the functionality > removed completely - obviously my preference is skewed by the > aforementioned script. > > > - If wayland-client depends on say wayland-server, should one use > > wayland-server or wayland-server-uninstalled in Required.private of > > wayland-client ? > > As I understand it, you never directly reference an -uninstalled > package. pkg-config will just use it preferentially if it finds both > foo.pc and foo-uninstalled.pc in its search path. So you can have a set > of distro packages for wayland installed on your system, but still link > with and compile against the uninstalled versions in your git working > directories. > > Thanks, > Derek > > > > Thanks > > Emil > > Bryce _______________________________________________ wayland-devel mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/wayland-devel
