Re: global start, global main or anything I want?

phoenix <spamtrap@[EMAIL PROTECTED]
> wrote in part:
> and then I type: gcc ass.o -o as***e
> 
> An error message appears:
> /usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../lib/crt1.o: In function
> `_start':
> (.text+0x18): undefined reference to `main'
> collect2: ld returned 1 exit status


> If the label (in the program) is called main (and not prog),
> there's no error message.  If the label is called start,
> the error message appears again.

> My question is: can I choose whatever label names in my
> program, without having all these error messages? Or am I
> forced to always insert a label called "main" in my code?


In addition to the other fine responses you've received,
I would add you should look at the `gcc` manpage, particularly
under the -nostdlibs and -nostartfiles options.

Every Linux executable (both a.out and ELF) needs a global
entry point labeled _start .  gcc startfiles provides this,
but then needs an entrypoint called main.

-- Robert