Linux kernel and GCC?

kushalkoolwal · 04-02-2009, 05:58 PM

This might be a stupid question but here it is anyways:

How to find out with which version of GCC your current Linux kernel is compiled with?

I am not talking about my system's GCC version which I know I can find out by:

Code:

gcc -v

furryfreak · 04-02-2009, 06:17 PM

Don't think you can... but it might be worth trying an objdump on it to find any debugging symbols gcc may have created. gcc (or maybe gas or ld) often puts an ascii string near the end of elf objects, but i'm not sure about pure binaries such as the kernel

kushalkoolwal · 04-02-2009, 06:22 PM

Hmm.. I thought it would be easy to do so...

i asked this question because while installing VMWare i got the following warning message:

Code:

Your kernel was built with "gcc" version "4.1.3", while you are trying to use  "/usr/bin/gcc" version "4.3.2".

I got curious and I wanted to find out how to know the GCC version of compiled kernel.

Anyone if has any idea please let us know.

i92guboj · 04-02-2009, 10:32 PM

Mmmm

Code:

cat /proc/version

sundialsvcs · 04-03-2009, 09:29 AM

GCC does provide meta-symbols that equate to the compiler-version, allowing this information to be incorporated into source-code automatically.

the trooper · 04-03-2009, 09:42 AM

Look at the start of dmesg.Mine gives:

Code:

ade@Pc1:~$ dmesg
BIOS EBDA/lowmem at: 0009f000/0009f000
Initializing cgroup subsys cpuset
Linux version 2.6.28-amd64custom (root@Pc1) (gcc version 4.3.2 (Debian 4.3.2-1) ) #1 SMP Thu Jan 1 16:10:48 GMT 2009

Regards.
The trooper.