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From: =?ISO-8859-2?Q?Daniel_Cegie=B3ka?= <daniel.cegielka@gmail.com>
Newsgroups: gmane.linux.lib.musl.general
Subject: Re: Priorities for next release?
Date: Sat, 11 Aug 2012 20:41:57 +0200
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Archived-At: <http://permalink.gmane.org/gmane.linux.lib.musl.general/1529>

>> Couldn't this code just be fixed to add an argument to usage() and
>> call usage(argv[0]) or even usage(basename(argv[0])) if preferred?
>>
>> Rich
>
> Or even progname = basename(argv[0]) with global char *progname ?

Usually it looks like this:

extern char *__progname;

'extern' means __progname must be available to external objects, so in
code with main():

#include <stdio.h>

char *__progname;

int main(int argc, char *argv[])
{
        __progname = argv[0];
        printf("%s\n", __progname);
        return 0;
}

what you think? It works for me... so why basename(argv[0])?

Daniel