On Tue, Feb 24, 2015 at 2:54 PM, Paul Eggleton <[email protected]> wrote: > On Tuesday 24 February 2015 14:06:41 Otavio Salvador wrote: >> On Tue, Feb 24, 2015 at 4:00 AM, Bruce, Henry <[email protected]> wrote: >> > I'm putting together an OS image that includes a Java headless >> > application. Having used the openjdk7-jre-headless package on Ubuntu I >> > was hoping to find a matching recipe, but sadly none exist,. The >> > openjdk7-jre recipe requires the X11 distro feature which adds >> > unnecessary luggage for a small footprint IoT solution. Thanks to a >> > bbappend from https://github.com/woglinde/meta-java/issues/45 I can >> > minimize footprint, but a headless recipe would be a better solution. >> > I'm fairly new to Yocto so could someone explain the challenges of a >> > headless recipe and where one might start when creating one? >> >> Patches are welcome. I think the link you posted has a good base of >> work done so you could start there and later follow the README file to >> post the patches here. > > Perhaps more concretely, this would presumably be a place where you would use > PACKAGECONFIG to add and remove the appropriate dependencies and also options > in EXTRA_OECONF. It looks like that bbappend has a mixture of things that are > and aren't related to building without X. Henry, I'm not sure if you've come > across PACKAGECONFIG yet but just in case, here is an example from our > mpeg2dec recipe: > > PACKAGECONFIG ?= "${@bb.utils.contains('DISTRO_FEATURES', 'x11', 'x11', '', > d)}" > PACKAGECONFIG[x11] = "--with-x,--without-x,virtual/libx11 libxext libxv" > > (Obviously you'd need to use values appropriate for the openjdk recipe in > the second line.)
The only drawback I see from the PACKAGECONFIG solution, for this specific case, is that I can see use cases where one product will use headless and another use complete Java and this would impose or machine specific packages or split distros. However I also think that MOST people will use headless so maybe we could add the PACKAGECONFIG and default to headless and handle the exception when it happens... -- Otavio Salvador O.S. Systems http://www.ossystems.com.br http://code.ossystems.com.br Mobile: +55 (53) 9981-7854 Mobile: +1 (347) 903-9750 -- _______________________________________________ Openembedded-devel mailing list [email protected] http://lists.openembedded.org/mailman/listinfo/openembedded-devel
