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Date: Mon, 29 Mar 2010 20:38:07 +0300
From: Eli Zaretskii <eliz AT gnu DOT org>
Subject: Re: djgpp/libreadline bug? (cannot use backspace)
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> From: RayeR <glaux AT centrum DOT cz>
> Date: Mon, 29 Mar 2010 09:53:30 -0700 (PDT)
> Bytes: 2494
> 
> > You can _use_, i.e., _call_ the same function from many places.  But
> > ncurses does not _call_ getch etc., it _implements_ them.
> 
> OK understand. And why ncurses cannot use this functions from conio
> (libc.a)

Probably because they need to use the same infrastructure as other
ncurses functions, e.g. so that the cursor position could be tracked.

> or name them differently?

The names are expected by programs that link against ncurses.

> I tried to play with linking order and found that if I link libc first
> I got any error and it compiles OK.
> [object files] -lc -lreadline -lncurses
> And it seems to work for both parts using getch and readline.
> Which implementation of getch was used?

The one from ncurses, I think.  GNU ld is a one-pass linker, so it
will not load the functions from libc until it sees some other
function that calls them.