Which version.h is being used ?

goossen · 07-12-2011, 08:12 AM

I have a machine which came with the kernel 2.6.18, I've compiled from source a newer kernel (2.6.35) because the patches I'm working on are intended for that version.
I have several of lines like this:

Code:

#include <linux/version.h>

and

Code:

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)

These values are defined in version.h but how can I tell to (or know if it) use /opt/kernel/linux-2.6.35/include/linux/version.h instead of /usr/include/linux.version.h (which is 2.6.18) ?

Or am I missing some step related to kernel upgrade ?

CapnStank · 07-12-2011, 12:16 PM

See this post. Basically the .h file located first in your include path is used.

I *believe* you can use `gcc -v` to see your include path but I forget and don't have access to gcc compiler where I am right now.

Peverel · 07-13-2011, 05:57 AM

I suggest you read the file \usr\include\linux\version.h ; it appears to tell you what to do.