Errors when building a kernel

[Ralf Mardorf]

Thank you,

but building a kernel in general isn't a problem for me.

On Fri, 21 Aug 2015 12:30:44 +0100, Robie Basak wrote:
>Are you aware of https://wiki.ubuntu.com/Kernel/MainlineBuilds? It
>should be trivial to try non-Ubuntu-modified kernels on Ubuntu as the
>kernel team build them for us. This will only help with Ubuntu patches
>though - you'll still have to deal with the config.

That's doesn't help.

This line ...

[root at moonstudio src]# export CONCURRENCY_LEVEL=2;wget
https://www.kernel.org/pub/linux/kernel/v3.x/linux-3.10.61.tar.gz
https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/older/patch-3.10.61-rt65.patch.gz
&& tar zxf linux-3.10.61.tar.gz && mv linux-3.10.61 linux-3.10.61-rt65
&& cd linux-3.10.61-rt65 && gzip -dc ../patch-3.10.61-rt65.patch.gz |
patch -p1 && cp ../config-3.10.61-rt65-1-rt-lts_x86_64.Arch .config &&
make oldconfig && make oldconfig && date && make-kpkg clean &&
make-kpkg --initrd kernel-image kernel-headers && make-kpkg clean &&
date

... does the job. FWIW I'm aware about fakeroot, but such details are
irrelevant regarding the problem. The problem is to fix the config.

1. - compiling takes > 1 hour, then an error appears
   - fixing an error usually is easy to do by disabling an option
     (module)
   - then you compile again > 1 hour to get and fix the next error

   I hope that there's a way to avoid this compiling-loop-procedure.

2. - if you have bad luck, as I currently have got, then simply fixing
     an issue by disabling an unneeded option (module) isn't that easy

I don't know what config settings "enable" CONFIG_MPILIB.

"CONFIG_MPILIB=n" and "CONFIG_KEYS=y"
or
"# CONFIG_MPILIB is not set"
or
"CONFIG_MPILIB is not set"

after running oldconfig becomes

CONFIG_MPILIB=m

there is the need to change other config settings.

Usually you get an error "foo" and then changing "CONFIG_FOO=m" or
"CONFIG_FOO=y" to "CONFIG_FOO is not set" does cause oldconfig to ask
you if it should be used or not, for CONFIG_MPILIB this doesn't work.

Usually I wouldn't use an Arch Linux kernel's config to compile the
same kernel for Ubuntu. I would start with an Ubuntu kernels config.
But in this case it's needed to get as close as possible to an Arch
Linux kernel's config, to test something.
   
Regards,
Ralf