Dear Maintainer,

if I start gps realtime tracking viking crashes in libgps
stack trace:

(gdb) info threads
  Id   Target Id         Frame
  2    Thread 0x7f711a6bc700 (LWP 11711) 0x00007f712d8e6a93 in *__GI___poll (fds=<optimized out>, nfds=<optimized out>,
    timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:87
* 1    Thread 0x7f7131545960 (LWP 11707) 0x00007f712e4ad49e in gps_sock_read () from /usr/lib/x86_64-linux-gnu/libgps.so.20
(gdb) i s
#0  0x00007f712e4ad49e in gps_sock_read () from /usr/lib/x86_64-linux-gnu/libgps.so.20
#1  0x00007f712e4a9eba in gps_read () from /usr/lib/x86_64-linux-gnu/libgps.so.20
#2  0x000000000043a230 in ?? ()
#3  0x00007f712eb8f205 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f712eb8f538 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f712eb8f932 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f7130a66a77 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#7  0x000000000041287a in ?? ()
#8  0x00007f712d837ead in __libc_start_main (main=<optimized out>, argc=<optimized out>, ubp_av=<optimized out>,
    init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff46461908) at libc-start.c:228
#9  0x0000000000412941 in ?? ()
#10 0x00007fff46461908 in ?? ()
#11 0x000000000000001c in ?? ()
#12 0x0000000000000002 in ?? ()
#13 0x00007fff46462609 in ?? ()
#14 0x00007fff46462610 in ?? ()
#15 0x0000000000000000 in ?? ()

Long story short:
The current Wheezy binaries of Viking were compiled before gpsd 3.6 had the
32c2c9c_GPS_PATH_MAX-needs-to-be-longer-to-handle-Linux-persistent-device-names
patch applied. The patch changes the size of struct gps_data_t and thus
breaks ABI compatibilty.

Best regards,

  Daniel