mkoctfile: undefined reference to `XOpenDisplay'

[Jaroslav Hajek]

On Mon, May 18, 2009 at 12:36 PM, David Grundberg <c04dgg at cs.umu.se> wrote:
> Bug report for Octave 3.1.55 (9211:f0c3d3fc4903) configured for
> i686-pc-linux-gnu
>
> Description:
> -----------
>
>  * I'm unable to get mkoctfile to create output with default
>    options. Using 9211:f0c3d3fc4903.
>
> Repeat-By:
> ---------
>
>  *  ./configure --prefix /opt/octave-head -C
>     make
>     make install
>
>     cat > helloworld.cc << EOF
>     #include <octave/oct.h>
>
>     DEFUN_DLD (helloworld, args, nargout,
>       "Hello World Help String")
>     {
>       int nargin = args.length ();
>       octave_stdout << "Hello World has " << nargin
>             << " input arguments and "
>             << nargout << " output arguments.\n";
>       return octave_value_list ();
>     }
> EOF
>     export PATH=/opt/octave-head/bin:$PATH
>     mkoctfile helloworld.cc --link-stand-alone
>
>  *  I'm expecting mkoctfile to produce a runnable executable, but it
>     will not. These are the messages from mkoctfile:
>
> /opt/octave-head/lib/octave-3.1.55/liboctinterp.so: undefined reference
> to `XOpenDisplay'
> /opt/octave-head/lib/octave-3.1.55/liboctinterp.so: undefined reference
> to `XScreenNumberOfScreen'
> collect2: ld returned 1 exit status
>
> Fix:
> ---
>
>  * As a work-around, I can export LDFLAGS=-lX11 while running
>    mkoctfile. That way it will produce a runnable a.out.
>
>

Please try the following patch (or just pull from savannah archive):
http://hg.savannah.gnu.org/hgweb/octave/rev/0839df1694ae

regards

-- 
RNDr. Jaroslav Hajek
computing expert & GNU Octave developer
Aeronautical Research and Test Institute (VZLU)
Prague, Czech Republic
url: www.highegg.matfyz.cz