Re: [Gcl-devel] Re: [Maxima] Maxima GUIs/emacs troubles! (and commutativity issues)

[Camm Maguire]

Greetings!  OK, it might be best in the long run to check for libc 2.1
and invoke this automatic stuff, but for now, doesn't ncurses work on
all systems?  Isn't the solution I've committed the simplest for the
array of existing Linux systems?  I don't know of a system which uses
a separate libtermcap.

Take care,

Tuukka Toivonen <address@hidden> writes:

> On 3 Feb 2002, Camm Maguire wrote:
> 
> >Greetings!  OK, I've replaced the "termcap" from the original readline
> >patch with "ncurses".  On my debian systems, libtermcap is a link to
> >libncurses anyway.  And the original patch author had a comment
> >indicating that ncruses could be used on some systems.  Try it out --
> 
> Readline can be built to link with either termcap or ncurses. Now it won't
> work if it happens to be linked against termcap, I believe. In the ideal
> case configure would detect which one is used and select the correct one.
> 
> However, this is a problem with only glibc 2.0 and older. Starting from
> glibc 2.1, the libraries such as libreadline "know" which other libraries
> they need to be linked with, and the linker takes care of it automatically.
> That is, with glibc 2.1 or newer the simplest solution is to use *neither*
> -lncurses or -ltermcap, because it will be added automatically.
> 
> This doesn't solve the problem with glibc 2.0, though. Anyone still using
> it?
> 
> >> < LIBS="-lreadline  $LIBS"
> >> ---
> >> > LIBS="-lreadline -lncurses $LIBS"
> 
> Hmm. I'd like to know what $LIBS contains here. Definitely RH 7 is not
> glibc 2.0 -based, so -lncurses shouldn't be necessary. With Debian it
> certainly is not (unless there are some other link arguments that mess the
> linking.
> 
> One test you [referring to the original poster or whoever] could test is to
> try the following:
> 
> cd  /tmp
> cat >test.c
> int main() {}
> ^D
> gcc test.c -lreadline -o test
> ldd test
> 
> On my system (Debian Woody) ldd prints:
>       libreadline.so.4 => /lib/libreadline.so.4 (0x4001d000)
>       libc.so.6 => /lib/libc.so.6 (0x40043000)
>       libncurses.so.5 => /lib/libncurses.so.5 (0x40166000)
>       /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000)
> 
> i.e. it linked libncurses automatically. Try what it makes on your system.
> 
> 
> 
> 

-- 
Camm Maguire                                            address@hidden
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