Kernel version and module.symvers

English Programming/Scripting
1

The uname -r command gives the kernel version as 2.6.25.20-0.1-pae
but the contents of /usr/src does not contain such a folder.Here’s the output of **ls -l /usr/src **:

lrwxrwxrwx  1 root root   19 2009-02-14 11:26 linux -> linux-2.6.25.20-0.1
drwxr-xr-x  6 root root 4096 2009-02-14 11:27 linux-2.6.25.18-0.2
drwxr-xr-x 22 root root 4096 2009-02-14 11:25 linux-2.6.25.20-0.1
drwxr-xr-x  3 root root 4096 2009-02-14 11:32 linux-2.6.25.20-0.1-obj
drwxr-xr-x  4 root root 4096 2008-09-24 15:49 linux-2.6.25.5-1.1
lrwxrwxrwx  1 root root   23 2009-02-14 11:26 linux-obj -> linux-2.6.25.20-0.1-obj
drwxr-xr-x  7 root root 4096 2008-06-10 17:54 packages

My question is where is the correlation? I am basically trying out a simple kernel module but when i give the path of any of the folders in the makefile, it gives the following

make: Entering directory `/usr/src/linux-2.6.25.20-0.1'

  WARNING: Symbol version dump /usr/src/linux-2.6.25.20-0.1/Module.symvers
           is missing; modules will have no dependencies and modversions.
2

Hi
When building modules aside from installing the kernel-source, you need
linux-kernel-headers, kernel-syms and module-init-tools installed.

–
Cheers Malcolm °¿° (Linux Counter #276890)
openSUSE 11.1 x86 Kernel 2.6.27.7-9-default
up 1 day 0:11, 1 user, load average: 0.12, 0.19, 0.16
GPU GeForce 6600 TE/6200 TE - Driver Version: 180.29

3

Thanks Malcom, but i have a doubt: is the pae kernel version(2.6.25.20-0.1-pae) the same as the one pointed by the symlink /usr/src/linux(linux-2.6.25.18-0.2) ?

4

Hi
The links should point to the current running kernel, it’s
down in the /lib/modules where the kernel type is picked up.

In your case the links are correct from your first post both point to
2.6.25.20-0.1

–
Cheers Malcolm °¿° (Linux Counter #276890)
openSUSE 11.1 x86 Kernel 2.6.27.7-9-default
up 1 day 13:03, 1 user, load average: 0.12, 0.65, 0.58
GPU GeForce 6600 TE/6200 TE - Driver Version: 180.29