Hello Michael,
I created a local copy of <linux/videodev2.h>, "videodev2.h", made the
conditional include and changed the include directive in my code, but
now a zillion parse errors and warnings show up instead, like this first
one:
In file included from videograb.c:4:
videodev2.h:118: parse error before `__s32'
To compile, I use
gcc -H -o videograb videograb.c
Any other gcc flags or additional includes I should be aware of? I tried
-D__KERNEL__, resulting in the original 2 errors and a few more warnings.
Thomas
Michael Hunold wrote:
Hello Thomas,
In file included from /usr/include/linux/videodev2.h:17,
from videograb.c:6:
/usr/include/linux/time.h:9: redefinition of `struct timespec'
/usr/include/linux/time.h:17: redefinition of `struct timeval'
make: *** [videograb] Error 1
Can anyone hint towards a solution? The time.h definitions apart from
timespec and timeval seem important, so time.h is needed for other
reasons than those.
If you want to use the kernel header file "videodev2.h" for user-space
applications you have to change
> #include <linux/time.h> /* need struct timeval */
to
> #ifdef __KERNEL__
> #include <linux/time.h> /* need struct timeval */
> #endif
right at the top of "videodev2.h".
Thanks in advance
Thomas
CU
Michael.
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