Brynjar S. Larssen wrote:
> On Sun, 2008-11-23 at 19:02 -0800, David N. Lombard wrote:
>>> make
>>>
>>> make -C /lib/modules/2.6.27-7-generic/build
>>> SUBDIRS=/home/bsl/pwc-v4l2-20081120-042701 modules
>>> make[1]: Entering directory `/usr/src/linux-headers-2.6.27-7-generic'
>>> CC [M] /home/bsl/pwc-v4l2-20081120-042701/pwc-if.o
>>> In file included from /home/bsl/pwc-v4l2-20081120-042701/pwc-if.c:69:
>>> /home/bsl/pwc-v4l2-20081120-042701/pwc.h:35:27: error: asm/semaphore.h:
>>> No such file or directory
>> asm/semaphore.h is the name of the file in the kernel build tree. Are
>> you building this in the tree or outside?
>
> David, to be perfectly honest I do not know; this is my first ever
> attempt at compiling a driver.
>
> I got this far following the "Kernel 2.6 + module" instructions in
> http://www.saillard.org/linux/pwc/INSTALL.en (and as you can see I'm
> using the pwc-v4l2-20081120-042701 snapshot.)
>
> I'm guessing the answer is "outside" though, judging by this line:
> "make[1]: Entering directory `/usr/src/linux-headers-2.6.27-7-generic'"
>
> Looking in that path, and the directories
> /usr/src/linux-headers-2.6.27-7-generic/include/asm/
> /usr/src/linux-headers-2.6.27-7-generic/include/linux/
> the former has no semaphore.h, but the latter does.
>
> Again guessing, the kernel build tree is in /lib/modules/, and the
> situation is the same over there:
> /lib/modules/2.6.27-7-generic/build/include/linux/ has semaphore.h,
> /lib/modules/2.6.27-7-generic/build/include/asm/ does not have it.
>
>
This assumes you have the sources for your kernel, which would have
system-specific links for the asm directory to an architecture-specific
asm file, e.g., asm->asm-x86
I don't use Ubuntu, so I don't know how to get those files for your
Ubuntu-provided kernel.
--
dnl
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