Re: undefined symbol: UP

[Chet Ramey]

On 1/5/21 3:32 AM, Fabrice BAUZAC wrote:
> Hello,
>
> I'm trying to build and install readline 8.1 from source, but it looks
> like the generated library refers to some symbol "UP" which is not
> found, making the library unusable:
>
>    $ LD_PRELOAD=$PWD/shlib/libreadline.so.8.1 /bin/true
>    /bin/true: symbol lookup error:
>    /tmp/readline-8.1/shlib/libreadline.so.8.1: undefined symbol: UP
>    
>    objdump -T /home/noon/gsrc/lib/libreadline.so.8
>    0000000000000000      D  *UND*       0000000000000000              UP
>    
>    objdump -p /home/noon/gsrc/lib/libreadline.so.8
>      NEEDED               libc.so.6

UP is satisfied by ncurses/terminfo. You have to add -lncurses or
-lterminfo when linking.


> The libreadline I have on Debian does not have this issue, because it
> has a DT_NEEDED on libtinfo which provides this symbol:

They've chosen to install it that way, knowing they have libtinfo
installed.

--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/