Re: gplt_x11.c: undeclared SELECT_TYPE_ARG1

[Hans-Bernhard B. <br...@ph...>]

On Thu, 12 Feb 2004, Petr Mikulik wrote:

> > > Compiling gplt_x11.c fails under OS/2 -- I have XFree86 3.3.2 -- can someone
> > > help? I guess this is some kind of new code -- there are no SELECT_TYPE_*
> > > constants in any X11 header file.
> >
> >  config/config.* need to be updated.
> 
> But how?

Read the comments, understand them, and then turn the #undef into a
#define with the correct right-hand side (a type, enclosed in
parentheses).  Just as 'configure' will do.  A "man select" or a peek
into your platforms <unistd.h> or <sys/select.h> should clarify what to
put there.

If all else fails, it may help to run ./configure on an OS/2 box
and see what it put into config.h.

> How should I define it? Or should rather be the code using it be surrounded
> by #ifdef PIPE_IPC?? 

I don't think so.

> What does that problematic code mean?

It uses the select() system call to wait either for the state of one of
several open files to change, or a pre-set time to expire (whichever
happens first).  As far as I can see, OS2_IPC has only one file handle to
watch (X11_ipc, which is gnuplot_x11's input pipe from gnuplot main),
PIPE_IPC has a second one: the channel to send back mouse events etc. to
gnuplot.

-- 
Hans-Bernhard Broeker (br...@ph...)
Even if all the snow were burnt, ashes would remain.