Maciej Borzęcki <maciej.borze...@rndity.com> writes: > On Thu, Sep 1, 2016 at 10:40 AM, Pietro <pulsarpie...@posteo.net> wrote: >> Maciej Borzęcki >> <maciej.borze...@rndity.com> writes: >> >>> On Wed, Aug 31, 2016 at 6:44 PM, Pietro <pulsarpie...@posteo.net> wrote: >>>> Hi all, >>>> >>>> I am new to the Yocto building system and I could be talking nonsense. I >>>> used to work with buildroot time ago and I remember there is an area >>>> where compiled software/packages/tools previously built are "staged" and >>>> used when building other packages. >>>> >>>> Is there something like that available with Yocto ? Specifically I would >>>> like to add a package which uses the Google Protocol Buffer, I do not have >>>> administrator rights on the machine and I can't install the packages I >>>> need system wise. >>>> >>>> Is it possible to add recipes and use them at building time without >>>> including them in the image being generated ? >>>> >>>> A good example for that would be the protoc, the protocol buffer >>>> description >>>> file compiler. >>>> >>> >>> There is a recipe for protobuf in meta-oe (2.6.1). All you need to do, >>> is include meta-oe in your layers (bblayers.conf) and have >>> protobuf-native listed in DEPENDS inside your package recipe. >>> >>> The protoc compiler will be available in the PATH when package is >>> being built, so autotools checks like AC_CHECK_PROG/AC_PATH_PROG >>> should be able to find it. >>> >>> Cheers, >>> -- >>> Maciej Borzecki >>> RnDity >> Thanks a lot. >> >> I have added the DEPENDS line and it indeed downloads and build the some >> protobuf related stuff, where did you get the dependency name from ? >> I can't see the protobuf-native as a recipe in the meta-oe website : >> >> https://layers.openembedded.org/layerindex/branch/master/layer/meta-oe/ > > It's just a mechanism that allows for building the native (i.e. for > the host) packages, and these are autmatically named ${PN}-native. > There should a BBCLASSEXTEND = "..native.." stanza inside the protobuf > recipe that enables this feature. > >> >> I have just realised that GRPC (http://www.grpc.io/) is needed for my >> project, it is a library which uses the protobuffers, is there a >> recipe/package which provides them around or do I need to create my own >> recipe ? > > You can try searching for a recipe at http://layers.openembedded.org > If there's none, try to write your own. This might be a good changes > to get yourself acquainted with `devtool` tool that will help you in > the process. > >> >> I would like to check the root filesystem being generated as part of the >> build process, where is it ? >> > > ${TMPDIR}/<machine>_<distro?>/<imagename>/../rootfs > > for instance, for my current build: > > tmp/work/vexpress_qemu-poky-linux-gnueabi/core-image-minimal/1.0-r0/rootfs > > -- > Maciej Borzecki > RnDity
Thanks, much appreciated. Do you know where the software which is not included in the image - such us protoc - is it stored ? It turns out the recipe for the protobuffer uses version 2.6 while I would need version 3.0.0 to be used, is there a way to partially "override" a recipe ? http://cgit.openembedded.org/cgit.cgi/meta-openembedded/tree/meta-oe/recipes-devtools/protobuf/protobuf_2.6.1.bb?h=master Thanks a lot. P. -- _______________________________________________ yocto mailing list yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/yocto