Trouble compiling program using the readline library. Post: 302876461

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Top Forums Programming Trouble compiling program using the readline library. Post 302876461 by stf92 on Sunday 24th of November 2013 07:44:34 PM

11-24-2013

Registered User

Trouble compiling program using the readline library.

Hi: in the info page for readline library I read

Code:

 -- Function: void rl_variable_dumper (int readable)
     Print the readline variable names and their current values to
     `rl_outstream'.  If READABLE is non-zero, the list is formatted in
     such a way that it can be made part of an `inputrc' file and
     re-read.

And wrote a little C program:

Code:

semoi@server:~/work$ cat dumpall.c                      
# Compile with 'gcc -Wall -lreadline -o dumpall dumpall.c'

#include <stdio.h>
#include <readline/readline.h>
#include <readline/history.h>

extern void rl_variable_dumper(int john);

main(){
    rl_variable_dumper(0);
}
       
semoi@server:~/work$

Compiling,

Code:

semoi@server:~/work$ gcc -o dumpall dumpall.c -lreadline
/usr/lib64/gcc/x86_64-slackware-linux/4.7.1/../../../../lib64/libreadline.so: undefined reference to `tputs'
/usr/lib64/gcc/x86_64-slackware-linux/4.7.1/../../../../lib64/libreadline.so: undefined reference to `tgoto'
/usr/lib64/gcc/x86_64-slackware-linux/4.7.1/../../../../lib64/libreadline.so: undefined reference to `tgetflag'
/usr/lib64/gcc/x86_64-slackware-linux/4.7.1/../../../../lib64/libreadline.so: undefined reference to `UP'
/usr/lib64/gcc/x86_64-slackware-linux/4.7.1/../../../../lib64/libreadline.so: undefined reference to `tgetent'
/usr/lib64/gcc/x86_64-slackware-linux/4.7.1/../../../../lib64/libreadline.so: undefined reference to `tgetnum'
/usr/lib64/gcc/x86_64-slackware-linux/4.7.1/../../../../lib64/libreadline.so: undefined reference to `PC'
/usr/lib64/gcc/x86_64-slackware-linux/4.7.1/../../../../lib64/libreadline.so: undefined reference to `tgetstr'
/usr/lib64/gcc/x86_64-slackware-linux/4.7.1/../../../../lib64/libreadline.so: undefined reference to `BC'
collect2: error: ld returned 1 exit status
semoi@server:~/work$

you see what I get. What am I doing wrong?

stf92

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pldd

PLDD(1) 							 Linux User Manual							   PLDD(1)

NAME

       pldd - display dynamic shared objects linked into a process

SYNOPSIS

       pldd PID
       pldd OPTION

DESCRIPTION

       The  pldd  command  displays a list of the dynamic shared objects that are linked into the process with the specified process ID.  The list
       includes the libraries that have been dynamically loaded using dlopen(3).

OPTIONS

       -?, --help
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       --usage
	      Display a short usage message.

       -V, --version
	      Display the program version.

VERSIONS

       pldd is available since glibc 2.15.

CONFORMING TO

       The pldd command is not specified by POSIX.1.  Some other systems have a similar command.

EXIT STATUS

       On success, pldd exits with the status 0.  If the specified process does not exist, the user does not have permission to access its dynamic
       shared  object  list, or no command-line arguments are supplied, pldd exists with a status of 1.  If given an invalid option, it exits with
       the status 64.

EXAMPLE

       $ echo $$	       # Display PID of shell
       1143
       $ pldd $$	       # Display DSOs linked into the shell
       1143:	 /usr/bin/bash
       linux-vdso.so.1
       /lib64/libtinfo.so.5
       /lib64/libdl.so.2
       /lib64/libc.so.6
       /lib64/ld-linux-x86-64.so.2
       /lib64/libnss_files.so.2

NOTES

       The command

	    lsof -p PID

       also shows output that includes the dynamic shared objects that are linked into a process.

SEE ALSO

       ldd(1), lsof(1), dlopen(3), ld.so(8)

GNU
								    2014-09-27								   PLDD(1)

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