Problems with libdivecomputer under OSX

[Christian Axelsson]

While making OSX homebrew packages for libdivecomputer and subsurface I've
ran into trouble using my newly compiled libdivecomputer. I've tried both
with 1.0.1 and the git head but the results are the same. Running the test
program for vyper produces the following result:

   [mba:~/Temp/libdivecomputer] $ examples/vyper /dev/tty.SLAB_USBtoUART 
   DEVICE=/dev/tty.SLAB_USBtoUART, DELAY=500
   suunto_vyper_device_open
   TRACE (serial_posix.c:684, ioctl): Inappropriate ioctl for device (25)
   suunto_vyper.c:145: Failed to set the DTR line.
   suunto_vyper_test.c:38: Error opening serial port.
   suunto_vyper_device_open
   TRACE (serial_posix.c:684, ioctl): Inappropriate ioctl for device (25)
   suunto_vyper.c:145: Failed to set the DTR line.
   suunto_vyper_test.c:71: Error opening serial port.

   SUMMARY
   -------
   test_dump_sdm:    Input/output error
   test_dump_memory: Input/output error

... but running the test program downloaded from the webpage works:

   [mba:~/Downloads] $ ./vyper /dev/tty.SLAB_USBtoUART 
   DATETIME 2012-07-06T19:16:32Z (1341602192)
   REVISION 781f0db71f7a06591e819f7960dd5b504b4f16a0
   DEVICE=/dev/tty.SLAB_USBtoUART, DELAY=500
   suunto_vyper_device_open
   Configure: baudrate=2400, databits=8, parity=2, stopbits=1, flowcontrol=0
   Timeout: value=1000
   DTR: value=1
   Sleep: value=100
   Flush: queue=3, input=0, output=0
   device_foreach
   [... data dump ...]

Any ideas on what might be causing this?

Regards, 
Christian