Re: [AD] alternate entry point for allegro programs

[Peter Wang <tjaden@xxxxxxxxxx>]

Chris wrote:

> Peter Wang wrote:
>
> > There are other ways of getting the path, albeit probably less 
> > portable.  Grabbing argv is too trivial a reason to hijack the 
> > definition of main.
>
>
> I believe it hijacks main in Unix because argv[0] is, normally, 
> exactly as typed on the command line (with possibly no/relative path 
> info). This means Allegro would have to modify it to put in a 
> proper/absolute path (like DJGPP/DOS does).


Huh?  I don't know how you got from what I wrote to what you wrote ;-)

Anyway, hijacking of main() happens in umain.c.  This is done to get 
argc and argv, and store them into __crt0_argc and __crt0_argv.  Apart 
from providing a bit of djgpp emulation, these are only used to 
implement get_executable_name() on Unix.  But there are other ways to 
implement get_executable_name(), for example, looking up /proc/self/exe 
on Linux.

Peter