[Pkg-virtualbox-devel] Bug#785161: kbuild: module-assistant fails to build virtualbox-source

[Gianfranco Costamagna]

I talked on irc with virtualbox/upstream folks (who always have the best solution :) )


this is a snippet of the conversation:
-I don't think this has anything to do with kBuild which we use to compile the VirtualBox source code.
-don't think anyone ever promised that one can mix and match kbuild and vbox... we define in our repo (or the tarball) what's known to work. if you use anything else you're on your own, and most likely out of luck.
-When compiling the Linux kernel modules, kBuild is not / should not be used at all. The Linux kernel modules are built with the Linux kernel make system.
-I don't know.  For VirtualBox 4.3 we are currently using r2780, for 5.0 Beta we are using r2782.
-The kernel modules need to be compiled with the Linux build system and this has nothing to do with kBuild.
-Perhaps he does 'alias make=kmk' which he should not do.
-The VirtualBox kernel modules are just external Linux kernel modules. They exist on their own and don't need the VirtualBox sources nor the kBuild system.
-it might use kbuild for "extracting" them from the full vbox tree. we don't define any other way.
-We do. src/VBox/HostDrivers/linux/export_modules is the official way for exporting the Linux modules from our tree.
-And for the Additions this is src/VBox/Additions/linux/export_modules. We did both years ago for the Debian folks :-)



so seems that what you are trying to achive isn't supported, I'm tempted to close this bug...

thanks,

Gianfranco



Il Mercoledì 13 Maggio 2015 10:40, lorenz lor <lorenzo.ru.g at gmail.com> ha scritto:



Hi Gianfranco,
thank you for your reply.
With version  1:0.1.9998svn2745+dfsg-1 I can do the build without any problem.

Lorenzo


2015-05-13 9:07 GMT+02:00 Gianfranco Costamagna <costamagnagianfranco at yahoo.it>:

Hi Lorenzo, in order to bisect the problem, would be nice if you could test
>version 1:0.1.9998svn2745+dfsg-1 and 1:0.1.9998svn2734+dfsg-1 in experimental
>
>
>you can grab them from snapshots [1] if needed.
>
>thanks a lot,
>
>Gianfranco
>
>
>[1] http://snapshot.debian.org/package/kbuild/
>
>
>
>
>
>Il Mercoledì 13 Maggio 2015 0:48, Lorenzo <lorenzo.ru.g at gmail.com> ha scritto:
>Package: kbuild
>Version: 1:0.1.9998svn2780+dfsg-1
>Severity: important
>
>Dear Maintainer,
>
>when I try to build virtualbox kernel modules using
># m-a build virtualbox-source
>the build fails with the following error:
>
>  CC [M]  /usr/src/modules/virtualbox/vboxdrv/r0drv/memobj-r0drv.o
>│   CC [M]  /usr/src/modules/virtualbox/vboxdrv/r0drv/mpnotification-r0drv.o
>│   CC [M]
>│ /usr/src/modules/virtualbox/vboxdrv/r0drv/powernotification-r0drv.o
>│ ld: cannot open linker script file
>│ /usr/src/modules/virtualbox/vboxdrv/r0drv/.tmp_: No such file or directory
>│ kmk[3]: ***
>│ [/usr/src/modules/virtualbox/vboxdrv/r0drv/mpnotification-r0drv.o] Error 1
>│ kmk[3]: *** Waiting for unfinished jobs....
>│ kmk[3]: Leaving directory `/home/ombra/Downloads/linux-van-4.0.1'
>│ kmk[3]: Entering directory `/home/ombra/Downloads/linux-van-4.0.1'
>│ kmk[3]: *** Exiting with status 2
>│ kmk[2]: *** [/usr/src/modules/virtualbox/vboxdrv] Error 2
>│ kmk[2]: Leaving directory `/home/ombra/Downloads/linux-van-4.0.1'
>kmk[1]: *** [_module_/usr/src/modules/virtualbox] Error 2
>│ kmk[1]: Leaving directory `/home/ombra/Downloads/linux-van-4.0.1'
>│ kmk: *** [binary-modules] Error 2
>│ /usr/share/modass/include/common-rules.make:56: recipe for target
>│ 'kdist_build' failed
>│ make: *** [kdist_build] Error 2
>
>Note that this problem is related to kbuild and m-a but does not affect the dkms building system.
>I file this bug against kbuild because downgrading m-a itself or virtualbox-source package to a previuos version doesn't solve the problem, while downgrading kbuild to the stable version (1:0.1.9998svn2695+dfsg-2) allow me to build virtualbox modules.
>
>Thanks
>
>Lorenzo
>
>
>-- System Information:
>Debian Release: stretch/sid
>  APT prefers unstable
>  APT policy: (500, 'unstable')
>Architecture: amd64 (x86_64)
>
>Kernel: Linux 4.0.1-van (SMP w/2 CPU cores; PREEMPT)
>Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
>Shell: /bin/sh linked to /bin/dash
>Init: sysvinit (via /sbin/init)
>
>Versions of packages kbuild depends on:
>ii  libc6  2.19-18
>
>kbuild recommends no packages.
>
>kbuild suggests no packages.
>
>-- no debconf information
>