tiomap-dev team mailing list archive

[Mario Limonciello <superm1@xxxxxxxxxx>]

DKMS isn't the only package that will run into problems, really hand
compiling kernel modules will probably hit the same roadblocks.

I think the most appropriate solution is to fix these packages before
they're deployed on the cross compiled architectures.  It doesn't make
sense to have binaries from the native builder on those machines.  Those
last files should be recompiled for the correct target architecture at
the end of the build process after they're used on the machine to cross
compile all modules.

** Changed in: dkms
       Status: New => Won't Fix

-- 
You received this bug notification because you are a member of TI OMAP
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 “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