It's also possible to:

cd PATH-TO-KERNEL-HEADERS
cd arch/arm/include/
mkdir mach
touch mach/timex.h

To avoid modifying the header file itself.

HTH,

  --eric

On Sunday, September 22, 2013 8:44:20 PM UTC-7, DeKay wrote:
>
> I reread the blog at 
> http://gencarelle.com/blog/2013/07/19/problems-with-rtl8188cus/ and tried 
> the edit of the timex.h header he describes there and now I can at least 
> get the compile to work.  I think his fix is basically a noop because he 
> seems to be including timex.h within timex.h!
>
> Now dmesg shows this which might make sense (or might not) as the RFM12b 
> is not yet connected.  Haven't dug into this at all yet, but at least it 
> seems to be progress.  I think I just need to run this script (
> https://github.com/gkaindl/beaglebone-ubuntu-scripts/blob/master/bb-enable-spi-devicetree.sh)
>  
> but it is getting late  :-)
> [  230.466576] rfm12b : no spi_master found for busnum 1.
> [  230.473506] rfm12b : driver failed to load: -19.
> [  266.681721] No module found in object
>
> On Sunday, 22 September 2013 20:31:40 UTC-6, DeKay wrote:
>>
>> I am trying to compile a kernel module on my BBB for the RFM12B 
>> transceiver chip from the code I "git cloned" from here
>> https://github.com/gkaindl/rfm12b-linux
>>
>> When trying to compile this from the instructions on that page on the BBB 
>> itself, I get:
>>
>> root@arm:~/rfm12b-linux# make
>> make -C /lib/modules/3.8.13-bone28/build  M=/root/rfm12b-linux modules
>> make[1]: Entering directory `/usr/src/linux-headers-3.8.13-bone28'
>>   CC [M]  /root/rfm12b-linux/rfm12b.o
>> In file included from include/linux/timex.h:65:0,
>>                  from include/linux/jiffies.h:8,
>>                  from include/linux/ktime.h:25,
>>                  from include/linux/timer.h:5,
>>                  from include/linux/workqueue.h:8,
>>                  from include/linux/srcu.h:34,
>>                  from include/linux/notifier.h:15,
>>                  from include/linux/memory_hotplug.h:6,
>>                  from include/linux/mmzone.h:761,
>>                  from include/linux/gfp.h:4,
>>                  from include/linux/kmod.h:22,
>>                  from include/linux/module.h:13,
>>                  from /root/rfm12b-linux/rfm12b.c:20:
>> /usr/src/linux-headers-3.8.13-bone28/arch/arm/include/asm/timex.h:18:24: 
>> fatal error: mach/timex.h: No such file or directory
>> compilation terminated.
>> make[2]: *** [/root/rfm12b-linux/rfm12b.o] Error 1
>> make[1]: *** [_module_/root/rfm12b-linux] Error 2
>> make[1]: Leaving directory `/usr/src/linux-headers-3.8.13-bone28'
>> make: *** [all] Error 2
>>
>> I am running Debian bone28 wheezy from rcn-ee.net and I have the 
>> corresponding kernel headers installed.  
>>
>> I found this link (
>> http://gencarelle.com/blog/2013/07/19/problems-with-rtl8188cus/) for 
>> someone running Ubuntu on the BBB but his fix for the missing arch type 
>> doesn't work as there is no armv7l directory to softlink to.
>>
>> There is also this link (
>> https://groups.google.com/forum/#!topic/beagleboard/5xMAyFxQbdE) on the 
>> 3.2 kernel from a year ago with a solution that required a compile of the 
>> kernel from sources.  But then I looked at the 3.8.13 sources on 
>> kernel.org and mach/timex.h doesn't exist in there either.
>>
>> Any help greatly appreciated.  Thanks!
>>
>

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