Re: error building GUI on Mac OS-X 10.6.8

[Michael Goffioul]

On Sat, Aug 11, 2012 at 5:53 PM, John W. Eaton <address@hidden> wrote:

On 11-Aug-2012, Ben Abbott wrote:

|

| On Aug 11, 2012, at 12:13 PM, Michael Goffioul wrote:
|
| > On Sat, Aug 11, 2012 at 3:53 PM, Ben Abbott <address@hidden> wrote:
| >> The the "thread" subdirectory references removed
| >
| > OK, but if you remove moc_QTerminal.cpp and let moc recreate it )when run from gui/src/), does it contain a reference to thread again?
|
| You are correct. The moc_QTerminal.cpp is recreated but without the "thread" reference.
|
| I did this a second time to verify.  Now when I ./run-octave the gui comes up!
|
| So what I did was ...
|
| (1) Apply the findFirst.diff patch
| (2) Commented out out the call to dissociate_terminal in octave_start_gui in gui/src/octave-gui.cc.
| (3) Removed qterminal/libqterminal/moc_QTerminal.cpp
| (4) Ran "make"
|
| I'm able to type commands and plot, and don't see any focus problems.  However, the keyboard mapping isn't correct.  When "less" is paging the output, typeing "q" has no effect.  Neither does ctrl-c.  The "Quit" from the MacOS menu bar also does not work.  So I had to kill Octave from the MacOS activity monitor.

OK, can you try the following change and see if it helps?

If this change works, then we would need to find a way to call
dissociate_terminal earlier.  But I'd prefer to avoid calling it
unconditionally.

Even if this change does work, it might be best to find a way to
associate the keyboard (/dev/tty?) with the command window without
having to fork.

That's what I try to achieved when I looked at it, but didn't succeed. The reasoning was the following:

- to change the controlling terminal, one can call ioctl with TIOCSTTY

- the above is only possible if the calling process is a session leader

- to become a session leader, one can use setsid

- setsid requires the calling process not to be a group leader

- the recommended way to use setsid is to fork

As I mentioned in one of my previous mail, low-level Linux expert needed.

Michael.