Matrix Vision mvBlueLYNX-X, Техническое руководство, Страница: 170 / 236

In either case you may need to install extra packages on your camera:
Open a Terminal (e.g. in the Virtual Machine either in Eclipse or via the system). 1.
Open a ssh connection like (e.g. in Eclipse in the Virtual Machine you already have a connection):
ssh root@[IP ADDRESS OF YOUR MVBLUELYNX-X]
2.
Enter the root password
matrix
. 3.
Now, you have to install the gdbserver to debug remotely.
opkg update
opkg install gdbserver
4.
To install the native gdb application use:
opkg install gdb
5.
It is also recommended to install the following packets.
opkg install libthread-db1 glibc-dbg
6.
18.3.6.1 Debugging a sample on the mvBlueLYNX-X itself
To debug a program directly on the camera you have to install the
gdb
debugger on the mvBlueLYNX-X (see
above):
Important is the init file
.gdbinit
for the gdb-debugger. In this file set the path to libraries for the arm
crosscompiler/linker.
Example file
.gdbinit
:
set solib-search-path /usr/local/angstrom/arm/lib:
/usr/local/angstrom/arm/arm-angstrom-linux-gnueabi/lib
Separate Paths with ":" and write this command only in one line !
Setting the path to the file
.gdbinit
:
Run -> Debug Configurations -> Debugger -> GDB command file: .gdbinit
Now you can start
gdb
passing your application as the first parameter. The procedure is identical to using
gdb
on any other computer. Full documentation for gdb is available here at sourceware.org.
gdb
is most useful when:
your application has been compiled with debug symbols (e.g. compiler option
-ggdb
) 1.
your application uses no automatic optimization level (i.e. compiler option
-O0
) 2.
the source files for the application are available to the
gdb
(e.g. by using an NFS mounted directory
from your development system).
3.
If, when using gdb, you see the message warning: Unable to find libthread_db matching inferior's
thread library, thread debugging will not be available. Please install the recommended packages as
noted above.
18.3.6.2 Debugging a sample on the mvBlueLYNX-X remotely
To debug a program remotely you have to install the
gdbserver
on the mvBlueLYNX-X (see above):
Make a new run and debug configuration:
Open Run -> Run Configurations.... 1.
mvBlueLYNX-X Technical Manual
160 22 April 2016 Version - 1.49 MATRIX VISION GmbH