The Build Appliance is just one VM that can benefit from VirtualBox guest additions. There are other VM implementations, where a small size is quite important. All I am trying to say is, that we need to be able to recreate the same contents as:
apt-get install linux-headers-$(uname -r) I don't have any strong feelings regarding if an already existing recipe needs to be modified or we need a separate recipe. > -----Original Message----- > From: Mark Hatle [mailto:mark.ha...@windriver.com] > Sent: Tuesday, August 4, 2015 12:22 PM > To: Bystricky, Juro; openembedded-core@lists.openembedded.org; > jurobystri...@hotmail.com > Cc: Purdie, Richard > Subject: Re: [OE-core] [PATCH 0/2] Support for VirtualBox guest additions > > On 8/4/15 2:10 PM, Bystricky, Juro wrote: > > I am pretty sure initially I tried to use kernel-devsrc to install > > VirtualBox > guest additions. > > It did not work out of the box for me, there were either files missing or > they were not in expected locations. > > It is possible it could be made to work with some modified > > installation, but the size is an issue as well: kernel-devsrc packs over > > 500MB > (uncompressed). > > This can be dealt with. If necessary splitting into two packages, the minimal > components and 'everything else', but should still be generated from the > kernel-devsrc recipe. > > But really is 500MB a problem when using the build-appliance? (You wouldn't > use any of these on a memory constrained target anyway -- you'd pre-build > any modules elsewhere.. so that shouldn't be a consideration.) > > > The source code is only needed when you want to reconfigure/rebuild the > kernel. > > Out-of-tree modules generally don't need any additional source code, > typically only header files. > > Some out of tree modules want to get access to more then just the header > files. > > --Mark > > > Juro > > > > > >> -----Original Message----- > >> From: Mark Hatle [mailto:mark.ha...@windriver.com] > >> Sent: Tuesday, August 4, 2015 10:32 AM > >> To: Bystricky, Juro; openembedded-core@lists.openembedded.org; > >> jurobystri...@hotmail.com > >> Cc: Purdie, Richard > >> Subject: Re: [OE-core] [PATCH 0/2] Support for VirtualBox guest > >> additions > >> > >> On 8/4/15 12:25 PM, Bystricky, Juro wrote: > >>> I agree, the name "kernel-headers" may not be the most fortunate, > >>> "linux- > >> headers" > >>> is probably more fitting. The recipe installs the files in a > >>> similar fashion that is done by > >>> > >>> apt-get install linux-headers-$(uname -r) > >>> > >>> Typical contents can be viewed for example here: > >>> https://www.archlinux.org/packages/core/i686/linux-headers/ > >>> > >>> These files are needed to allow building of kernel drivers against > >>> the running Linux kernel. In a way, it is a subset of kernel-devsrc, > >>> but including ".config" file used for the actual running kernel. > >> > >> Again this is part of the purpose of the existing kernel-devsrc > >> package. So what is missing preventing this from working. It likely > >> needs to be added to the kernel-devsrc package instead (or a sub > >> package that is created by the kernel-devsrc recipe.) > >> > >>> Having these files installed, it is possible to compile additional > >>> kernel drivers that are not part of the kernel-devsrc . > >>> VirtualBox compiles some of their own drivers this way, others as well. > >>> There are many other scenarios where you may want to add a new > >>> kernel driver to an already installed Linux kernel. > >> > >> Yes, this was part of the design behind the kernel-devsrc, make sure > >> the sources and components used to build the running kernel were made > >> available to the target so that out-of-tree/external kernel modules > >> could be built to match the running system -- as well as the ability > >> to reconfigure and rebuild the kernel itself. > >> > >> Bruce is on vacation this week and may not be around to respond, but > >> adding yet another package is not the right answer here. Lets fix > >> what may be broken in what we have. > >> > >> --Mark > >> > >>> Juro > >>> > >>> > >>> > >>>> -----Original Message----- > >>>> From: Mark Hatle [mailto:mark.ha...@windriver.com] > >>>> Sent: Tuesday, August 4, 2015 9:20 AM > >>>> To: Bystricky, Juro; openembedded-core@lists.openembedded.org; > >>>> jurobystri...@hotmail.com > >>>> Cc: Purdie, Richard > >>>> Subject: Re: [OE-core] [PATCH 0/2] Support for VirtualBox guest > >>>> additions > >>>> > >>>> On 8/3/15 3:35 PM, Juro Bystricky wrote: > >>>>> In order to support VirtualBox guest additions, kernel headers > >>>>> need to be present in the VM. I am aware we already have two > >>>>> packages/recipes that are somewhat similar (kernel-devsrc.bb, > >>>>> linux-libc-headers), but none > >>>> of them is suitable for this purpose. > >>>>> Besides the kernel headers, some additional files (scripts, > >>>>> Makefiles, .config, etc) are also required. > >>>> > >>>> linux-libc-headers is only for building applications. > >>>> kernel-devsrc is for building modules on the target. > >>>> > >>>> What do these specific modules need that are not present in kernel- > >> devsrc? > >>>> (I really don't want 'yet another' confusing package added to the > >>>> system.) > >>>> > >>>>> The new recipe "kernel-headers.bb" can in principle be used by > >>>>> other > >>>> images as well. > >>>>> It is not limited to the Build Appliance and hence is not a part > >>>>> of the Build Appliance recipe. > >>>> > >>>> I think kernel-headers is a bad name for a package. It could be > confusing. > >>>> > >>>> --Mark > >>>> > >>>>> Juro Bystricky (2): > >>>>> kernel-headers: linux kernel headers > >>>>> build-appliance-image: support for VirtualBox guest addtions > >>>>> > >>>>> .../README_vbox_guest_additions.txt | 78 > >>>> ++++++++++++++++++++++ > >>>>> .../images/build-appliance-image_12.0.1.bb | 4 +- > >>>>> meta/recipes-kernel/linux/kernel-headers.bb | 66 > >>>> ++++++++++++++++++ > >>>>> 3 files changed, 147 insertions(+), 1 deletion(-) create mode > >>>>> 100644 > >>>>> meta/recipes-core/images/build-appliance- > >>>> image/README_vbox_guest_addit > >>>>> ions.txt create mode 100644 > >>>>> meta/recipes-kernel/linux/kernel-headers.bb > >>>>> > >>> > > -- _______________________________________________ Openembedded-core mailing list Openembedded-core@lists.openembedded.org http://lists.openembedded.org/mailman/listinfo/openembedded-core
