readline AWOL?

[Dog Walker]

On Mon, Nov 17, 2008 at 12:40 PM, Jorge Almeida <jjalmeida at gmail.com> wrote:
> Hello, C-wise people,
>
> Can someone understand this?
>
>        $ cat readtest.c
>        #include <stdio.h>
>        #include <readline/history.h>
>        #include <readline/readline.h>
>        #define MAINPROMPT ">"
>        int main(int argc, char *argv[])
>        {
>                        char *lp;
>                        lp=readline(MAINPROMPT);
>                        return 0;
>        }
>        $ gcc readtest.c
>        /tmp/cc88uLvp.o: In function `main':
>        readtest.c:(.text+0x19): undefined reference to `readline'
>        collect2: ld returned 1 exit status
>        $ ls /usr/include/readline
>        chardefs.h  history.h  keymaps.h  readline.h  rlconf.h  rlstdc.h
>  rltypedefs.h  tilde.h
>
> Tested in Gentoo and in FC5.
>
>> From man 3 readline:
>
>        SYNOPSIS
>               #include <stdio.h>
>               #include <readline/readline.h>
>               #include <readline/history.h>
>
>               char *
>               readline (const char *prompt);
>
>

I would try doing what it says, i.e., declaring the readline function
before you use it:

        char *
        readline (const char *prompt);
        int main(int argc, char *argv[])
        {
                      char *lp;
                      lp=readline(MAINPROMPT);
                      return 0;
        }

>
>
> --
> Jorge Almeida
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>



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