Hi
On 15/03/15 05:18, Niels de Vos wrote:
On 2015-03-13 19:19, Robert Brown wrote:
Hi
I am trying to compile a module for FC22 Rawhide on an A10 device
(MK802ii) with a uname -r of 3.19.0-0.rc7.git3.1.fc22.armv7hl but am
getting a truncated vermagic: vermagic: 3.19.0-rc7 SMP
mod_unload ARMv7 p2v8
The .config I am using is a copy of the
/boot/config-3.19.0-0.rc7.git3.1.fc22.armv7hl.
I have tried editing LOCALVERSION without success.
If I edit the Makefile from the rpmbuild process to:
SUBLEVEL = 0-0
EXTRAVERSION = rc7.git3.1.fc22.armv7hl
or to
SUBLEVEL = 0
EXTRAVERSION = -0.rc7.git3.1.fc22.armv7hl
I still only get vermagic: 3.19.0-0.rc7 SMP mod_unload ARMv7 p2v8
The version.h file generated in include/generated/uapi/linux/
says #define LINUX_VERSION_CODE 201472
whereas the one in /usr/include/linux/version.h says
#define LINUX_VERSION_CODE 201728
Any tips on where to go with this?
This is actually the same for arm or any other Fedora kernel. You will
need to
have the kernel-devel package installed for the kernel that you want
to compile
the module for. And, after that, you can find the sources of your
module and
build only the module for that kernel with:
$ make -C /lib/modules/$(uname -r)/build M=$PWD/fs/fuse/
The above would (try to) compile the fuse.ko module for the current
running
kernel.
Thanks that's helpful for just compiling the one module.
The current working directory would be a (git) repository where the
sources/branch is available.
In case the kernel module that you want to compile needs extra .config
options
(that do not affect the rest of the kernel/modules), you should be
able to pass
them on the 'make' command line:
$ make -C .... EXTRA_CFLAGS="-DCONFIG_SOME_DRIVER=m" M=...
I decided to try cross-compiling as I figured it would be far quicker on
the laptop than on the device. I used the same .config, Makefile and
kernel sources but had no success getting the required vermagic until I put
CONFIG_LOCALVERSION="-0.rc7.git3.1.fc22.armv7hl"
into the .config file and set
SUBLEVEL = 0
EXTRAVERSION =
in the Makefile. This gave me the desired result.
So, encouraged, I tried again on the device (i.e. not cross compiling)
but again no good.
Decided to delete the file Module.symvers so it would re-build on the
next run and straight away I had success.
Is this documented?
Went on to compile the r8188eu from github as suggested by Clive Messer
as the Staging version was buggy. So far so good.
Thanks
HTH,
Niels
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