Linking rtapi_app with pthread doesn't make sense. It doesn't use
pthreads.
Furthermore, I didn't see that behavior on my 9.10 system (x86_64):
$ gdb rtapi_app
GNU gdb (GDB) 7.0-ubuntu
...
Reading symbols from .../emc2-dev/bin/rtapi_app...done.
(gdb) run
Starting program: .../emc2-dev/bin/rtapi_app
[I started emc then hit ctrl-c in the terminal with gdb]
^C
Program received signal SIGINT, Interrupt.
0x00007ffff6f83373 in select () from /lib/libc.so.6
(gdb) where
#0 0x00007ffff6f83373 in select () from /lib/libc.so.6
#1 0x000000000040540d in maybe_sleep (fd=5) at rtapi/sim_rtapi.c:372
#2 0x000000000040544a in sim_rtapi_run_threads (fd=5) at
rtapi/sim_rtapi.c:387
#3 0x00000000004040e5 in master (argc=<value optimized out>,
argv=<value optimized out>) at rtapi/sim_rtapi_app.cc:337
#4 main (argc=<value optimized out>, argv=<value optimized out>)
at rtapi/sim_rtapi_app.cc:371
(gdb)
Let's figure out more about what's happening here before changing
anything.
Jeff
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