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Re: [Libguestfs] [PATCH] Use -ltinfo instead of -lncurses.



On Thu, Nov 06, 2014 at 01:34:24PM +0100, Pino Toscano wrote:
> Given that three AC_CHECK_LIB checking for ncurses are now gone, 
> wouldn't it better to explicitly search for it prior to searching for 
> readline?

According to https://bugzilla.redhat.com/show_bug.cgi?id=499837
readline can be linked against either ncurses or termcap.

No modern system would prefer termcap, and I'll assume any system
ancient/strange enough to only provide termcap and not ncurses would
not be able to run libguestfs.

In Fedora, the readline-devel package requires ncurses-devel, so if
our test for readline succeeds, we can assume ncurses-devel is
installed and '-lreadline -lncurses' will just work.

On Debian/Ubuntu, they've ditched the nonsense of allowing alternate
backend implementations, and they link readline to ncurses properly
(so on Debian, '-lreadline' on its own works, whereas on Fedora we
still need '-lreadline -lncurses' for no useful reason).

It would be nice if readline itself shipped with a pkgconfig file, or
even any useful documentation on linking.  It does neither.

So ..  I think I'll leave this alone.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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