From: "Mark E." <snowball3 AT bigfoot DOT com>
To: djgpp-workers AT delorie DOT com
Date: Wed, 8 Aug 2001 15:48:17 -0400
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Subject: Re: TIOCGWINSZ
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In-reply-to: <3405-Wed08Aug2001220716+0300-eliz@is.elta.co.il>
References: <3B71406B DOT 10414 DOT 373595 AT localhost> (snowball3 AT bigfoot DOT com)
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> Why does it assume that?  What feature does it test to see if SIGWINCH
> is supported?

It doesn't test any feature. Just the configure flags --{enable,disable}-
sigwinch. That flag sets USE_SIGWINCH. But curses.priv.h (included by ncurses 
files) undefines USE_SIGWINCH if HAVE_SIZECHANGE is undefined. 
HAVE_SIZECHANGE is set based on whether the TIOCGWINSZ (or similiar) feature 
is present. So now USE_SIGWINCH is on by default. It's mainly used in 
ncurses/tty/lib_tstp.c. I added a check for SIGWINCH and undefine 
USE_SIGWINCH if it isn't defined.

> Isn't it easier to implement TIOCSWINSZ? ;-)  _set_screen_lines
> already has all the machinery, and this might be the right opportunity
> to get it separated from the monstrous conio.c, so programs could call
> it without pulling in all the rest.

Works for me.

Mark