ELF and a.out

benjaminrtz · 04-30-2003, 12:48 PM

Whats the different between ELF and a.oit format ?

When a compile a c code woth gcc

, what's that ELF or a.out format

mhearn · 04-30-2003, 05:19 PM

ELF is what we've used since about '95, iirc.

a.out is a much older format, that doesn't support dynamic linking.

Use gcc -o foo foo.c to generate an executable. The file program will tell you what type it is. gcc will always generate ELF by default, ignore the file name

benjaminrtz · 05-01-2003, 04:54 AM

So these days gcc compiled ti into ELF format By default .
How about cc

MasterC · 05-01-2003, 08:19 AM

On most systems cc is symlinked to gcc now. cc=gcc

Check yours:
whereis cc
ls -l /path/to/cc

Mine:

Code:

bash-2.05a$ whereis cc
cc: /usr/bin/cc /usr/man/man1/cc.1.gz /usr/share/man/man1/cc.1.gz
bash-2.05a$ ls -l /usr/bin/cc
lrwxrwxrwx    1 root     root            3 Nov 16 03:29 /usr/bin/cc -> gcc
bash-2.05a$

Cool

benjaminrtz · 05-01-2003, 10:17 AM

Thank you,

I never bother to check that out