Cross compiling a kernel module: invalid module format

Question

I\'m trying to cross compile a helloworld kernel module with specifications:

• host: intel x86 32 bit, linux-3.0.0
• target: ARM machine (Parrot AR.Drone)

Answer 1

my ugly fix is modifing script file "scripts/setlocalversion"

170         if test "${LOCALVERSION+set}" != "set"; then
171                 scm=$(scm_version --short)
172 #               res="$res${scm:++}"
173                 res="${res}"
174         fi

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Hi, everyone.. I did found simple soulution.

just modify envirionment vairable

export LOCALVERSION=

that's all

Answer 2

Thanks to the hint of Eugene to use dmesg, I found the error:

version magic '2.6.37.6 mod_unload modversions ARMv5 ' should be '2.6.27.47-parrot preempt mod_unload ARMv5 '

Conclusion: when compiling a kernel module, not only versions need to match, but also some config-parameters. My problem was solved by using the right version and editing the configuration.

If you don't want to reconfigure everything, a quick (ugly) fix is to edit include/generated/autoconf.h