ThinkCore W311/321/341 Linux User’s Manual
Tool Chains for Application Development
5-3
The following cross compiler tools are provided:
ar
Manages archives (static libraries)
as Assembler
c++, g++
C++ compiler
cpp C
preprocessor
gcc C
compiler
gdb Debugger
ld Linker
nm
Lists symbols from object files
objcopy
Copies and translates object files
objdump
Displays information about object files
ranlib
Generates indexes to archives (static libraries)
readelf
Displays information about ELF files
size
Lists object file section sizes
strings
Prints strings of printable characters from files (usually object files)
strip
Removes symbols and sections from object files (usually debugging information)
On-Line Debugging with GDB
The tool chain also provides an on-line debugging mechanism to help you develop your program.
Before performing a debugging session, add the option
-ggdb
to compile the program. A
debugging session runs on a client-server architecture on which the server
gdbserver
is installed
int the targe computer and the client
ddd
is installed in the host computer. We’ll asuumne that you
have uploaded a program named
hello-debug
to the target computer and strat to debug the
program.
1.
Log on to the target computer and run the debugging server program.
#gdbserver 192.168.4.142:2000 hello-debug
Process hello-debug created; pid=38
The debugging server listens for connections at network port 2000 from the network interface
192.168.4.142. The name of the program to be debugged follows these parameters. For a
program requiring arguments, add the arguments behind the program name.
2.
In the host computer, change the directory to where the program source
resides
.
cd /my_work_directory/myfilesystem/testprograms
3.
Execute the client program.
#ddd --debugger arm-linux-gdb hello-debug &
4.
Enter the following command at the GDB, DDD command prompt.
Target remote 192.168.4.99:2000
The command produces a line of output on the target console, similar to the following.
Remote debugging using 192.168.4.99:2000
192.168.4.99 is the machine’s IP address, and 2000 is the port number. You can now begin
debugging in the host environment using the interface provided by DDD.
5.
Set a break point on main by double clicking, or by entering
b main
on the command line.
6.
Click the
cont
button.
