Bug 488372

Summary:	app-emulation/virtualbox-guest-additions builds against /lib/modules/${uname -s}/build instead of /usr/src/linux
Product:	Gentoo Linux	Reporter:	Maciej Piechotka <uzytkownik2>
Component:	[OLD] Library	Assignee:	Lars Wendler (Polynomial-C) (RETIRED) <polynomial-c>
Status:	RESOLVED NEEDINFO
Severity:	normal	CC:	bkohler, patrick
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description Maciej Piechotka 2013-10-17 14:35:43 UTC

This causes problems during pre-reboot module rebuild for new kernel. The workaround is:

 1. Build new kernel
 2. Reboot
 3. Then rebuild modules and load them manually

Which is error-prone.

Comment 1 Ben Kohler gentoo-dev

2013-11-18 19:32:08 UTC

What version does this happen on?  Can you attach the full build log?  I cannot reproduce this on my machines.

Comment 2 Maciej Piechotka 2013-11-21 19:14:49 UTC

(In reply to Ben Kohler from comment #1)
> What version does this happen on?  Can you attach the full build log?  I
> cannot reproduce this on my machines.

Ups. Sorry I meant app-emulation/virtualbox-guest-additions.

In any case - I had troubles with 4.2.something. I could not reproduce on 4.3.

Comment 3 Ben Kohler gentoo-dev

2013-11-23 15:50:47 UTC

# emerge virtualbox-guest-additions

Calculating dependencies... done!

>>> Verifying ebuild manifests

>>> Emerging (1 of 1) app-emulation/virtualbox-guest-additions-4.2.18
 * VirtualBox-4.2.18.tar.bz2 SHA256 SHA512 WHIRLPOOL size ;-) ...        [ ok ]
 * Determining the location of the kernel source code
 * Found kernel source directory:
 *     /usr/src/linux
 * Found sources for kernel version:
 *     3.10.17-gentoo
>>> Unpacking source...
<SNIP, emerge completes successfully>

# eselect kernel show
Current kernel symlink:
  /usr/src/linux-3.10.17-gentoo

# uname -r
3.12.1-gentoo
# qlist virtualbox-guest-additions | grep modules
/lib/modules/3.10.17-gentoo/misc/vboxguest.ko
/lib/modules/3.10.17-gentoo/misc/vboxsf.ko
#

I still cannot reproduce this issue, can you reproduce it now?  Are you doing something like setting KBUILD_OUTPUT to build out of the main source dir?