Howto build kernel in debug mode

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What I have to do to build a linux kernel 2.6.18 in debug mode ?
thanks
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B.O.D.H.I.

Re: Howto build kernel in debug mode
Hello ,

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   What do you mean by debug mode? Do you want to use the debug option
in gcc to build the kernel (or) want to to debug the kernel using a
debugger?

Best Regards,
Vivekanandan M


Re: Howto build kernel in debug mode
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I need to buld the kernel with debug option and after that debug it with
a debugger. But as first I do need to build it properly.

TIA

Re: Howto build kernel in debug mode
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If you have a kernel w/ kgdb support, than this would be one with a
'unoffical' patch applied. Is this certain? If not, trying to get
along with 'printk' and/or CONFIG_DEBUG_LL is probably easier.

Re: Howto build kernel in debug mode
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Okay,
but HOW do I enable building the kernel with debug option ?
something like -O0 ? Where ? In makefiles or in menuconfig options ?
TIA

Re: Howto build kernel in debug mode
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I've found the answer in .config

CONFIG_DEBUG_INFO=y


bye

Re: Howto build kernel in debug mode
Hello ,

   -O0 is for optimization. Use -g for generating debug information.

Best Regards,
Vivekanandan M

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