gcc doubts-help

From: dennis jacob <dennismanithottam(at)rediffmail.com>
Date: Sat Sep 27 2003 - 08:42:34 EDT

Hello Sir,

   I got your address from a link in the net.I'm a beginner in gcc and have some doubts.Please clear.

      As part of my project, I have to develop a small kernel and I have selected gcc and the associated tools for this purpose. In some kernels, I have seen assembly routines been written in nasm and C programs in gcc.
I want to compile both with nasm and gcc respectively. The problem is I want to link these elf objs to obtain a single large elf file.

   Please suggest the syntax for the command line switch to compile a C program to obtain a elf output.Can I specify the name of the output file? Also specify the ld option to link more than one elf file to obtain a big elf file.

       Another doubt is about how to write a linker script for elf output. I have seen them in several kernels but have'nt understood yet.

     How should I specify my new linker script. In the info page it is written that the option -t may be used. Is it necessary that the script file must have a specific extension? Let me say my idea for using this. First use "ld -T scriptfilename" as command line. Then use the ld option to link all the elf objs. Also, how can I specify the name of the output file?

 				Thanking You
 					Dennis Jacob M.
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