Avik, you'll probably hit this bug if you try Systemtap (or any other
dkms package) with a kernel package that was built using the cross
toolchain. To properly fix it sync with Marcin and John, they should
know exactly what are the needed changes at the kernel package.
** Also affects: linaro-ubuntu
Importance: Undecided
Status: New
** Changed in: linaro-ubuntu
Status: New => Triaged
** Changed in: linaro-ubuntu
Importance: Undecided => Medium
** Changed in: linaro-ubuntu
Assignee: (unassigned) => Avik Sil (aviksil)
** Changed in: linaro-ubuntu
Milestone: None => 11.09
--
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Developers, which is subscribed to the bug report.
https://bugs.launchpad.net/bugs/666267
Title:
Cross compiled headers package breaks DKMS compilation
Status in Dynamic Kernel Module Support:
Won't Fix
Status in Linaro Ubuntu Evaluation Builds:
Triaged
Status in “linux-linaro-mx51” package in Ubuntu:
New
Status in “linux-ti-omap4” package in Ubuntu:
New
Bug description:
When cross-compiling headers package on a PC, some x86 programs get shipped
in the .deb.
Those programs get called during later compilation of DKMS modules, breaking
the build.
Faulty binaries are:
scripts/mod/mk_elfconfig
scripts/mod/modpost
scripts/kconfig/conf
scripts/basic/hash
scripts/basic/docproc
scripts/basic/fixdep
scripts/bin2c
scripts/kallsyms
scripts/pnmtologo
scripts/conmakehash
scripts/selinux/genheaders/genheaders
scripts/selinux/mdp/mdp
Starting with, for example:
https://launchpad.net/ubuntu/+archive/primary/+files/linux-ti-omap4_2.6.35.orig.tar.gz
https://launchpad.net/ubuntu/+archive/primary/+files/linux-ti-omap4_2.6.35-903.16.diff.gz
https://launchpad.net/ubuntu/+archive/primary/+files/linux-ti-omap4_2.6.35-903.16.dsc
Extract with 'dpkg-source -x linux-ti-omap4_2.6.35-903.16.dsc'.
Cross compilation is done with:
fakeroot debian/rules clean
export $(dpkg-architecture -aarmel)
CROSS_COMPILE=arm-linux-gnueabi- skipabi=true skipmodule=true fakeroot
debian/rules binary-omap4
To obtain cross compilers, add the following line to your
'/etc/apt/sources.list':
deb http://people.canonical.com/~hrw/ubuntu-maverick-armel-cross-
compilers/ ./
Then install 'gcc-4.4-arm-linux-gnueabi'.
After cross build, the resulting .deb are:
linux-headers-2.6.35-903-omap4_2.6.35-903.16_armel.deb
linux-image-2.6.35-903-omap4_2.6.35-903.16_armel.deb
One can check the shipped x86 binaries by extracting the .deb:
dpkg -x linux-headers-2.6.35-903-omap4_2.6.35-903.16_armel.deb
extract
...and searching for x86 executables:
find extract/usr/src/linux-headers-2.6.35-903-omap4/scripts -type f
-exec file "{}" \; |grep ELF |grep x86 |sed 's,:.*,,'
Some more details on cross compiling can be found at
'http://idlethread.blogspot.com/2009/01/recipe-of-day-cross-compiling-
armel.html'.
To manage notifications about this bug go to:
https://bugs.launchpad.net/dkms/+bug/666267/+subscriptions
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