From: Lyle Johnson <ljohnson@...>
Date: 2001-05-02T23:41:23+09:00
Subject: [ruby-talk:14543] Re: Pukes while compiling...

> I've RTFMed and I get the following error while compiling:
>
> gcc -g -O2 -rdynamic  main.o ext/extinit.o ext/curses/curses.a
> ext/etc/etc.a ext/fcntl/fcntl.a ext/md5/md5.a ext/pty/pty.a
> ext/sdbm/sdbm.a ext/socket/socket.a ext/tcltklib/tcltklib.a
> ext/tk/tkutil.a  libruby.a -ldl -lcrypt -lm  libruby.a -lncurses -lc
> -lgdbm -lc libruby.a -lc libruby.a -lc libruby.a -lc libruby.a -lc
> libruby.a -lc libruby.a -lc libruby.a -ltk -ltcl -lX11 -lm -ldl -lc
> libruby.a -lc -o ruby
> /usr/bin/ld: cannot find -lX11
> collect2: ld returned 1 exit status
> make[1]: *** [ruby] Error 1
>
> I'm really excited about using Ruby... therefore any help and/or
> suggestions will be much appreciated... :)

Mike,

I don't know which operating system you're building on, so you may need to
tweak this a little bit, but basically you need to add a flag to this link
line to tell "gcc" where to find the X11 library (libX11.so). On most Linux
systems, this library is found in /usr/X11R6/lib, so you'd add
"-L/usr/X11R6/lib", e.g.

    gcc -g -O2 -rdynamic ... -L/usr/X11R6/lib -lX11 ... -o ruby

If you're not building on Linux, libX11.so may live somewhere else. ISTR
that on Solaris it was under /usr/openwin/lib; so if in doubt, you might do
a system-wide find:

    find /usr -name "libX11*" -print

Hope this helps,

Lyle