How do I use the mingw64 gdb debugger?

[lucky7456969]

Hello,
I wonder how do I use the mingw64 gdb debugger instead of the
mingw32 provided by the codeblocks package.

I start up a debuggee, and it goes away immediately. I point to the C:\mingw64\bin\gdb.exe in the debugger
setting menu. The program runs fine, but I just can't make it stop at the breakpoints.
Thanks
Jack

Code Select Expand


[debug]Starting program: 
[debug]>>>>>>cb_gdb:

Starting the debuggee failed: No executable specified, use `target exec'.


[oBFusCATed]

Do you have a project?
And post the full log from the debugger please.

[lucky7456969]

Where can I find such files? I have enable full logging,
but there isn't any .log file existed in my project folder.
Thanks
Jack

[oBFusCATed]

Log and Others -> Debugger -> Right click -> Copy to clipboard

[lucky7456969]

Thanks for helping!
Jack

Code Select Expand


Build started on: 07-04-2014 at 03:30.44
Build ended on: 07-04-2014 at 03:30.47

-------------- Build: Debug in PerfectSim (compiler: mingw64 - nonunicode)---------------
x86_64-w64-mingw32-g++.exe -Wall -g -g -Wall -g -IE:\Software\Q\qt-4.7.4\4.7.4-qt-x64\include -IE:\Software\Q\qt-4.7.4\4.7.4-qt-x64\include\QtGui -c "E:\Jacky\Documents\Code Blocks Projects\PerfectSim\Camera\Camera.cpp" -o obj\Debug\Camera\Camera.o
x86_64-w64-mingw32-g++.exe -Wall -g -g -Wall -g -IE:\Software\Q\qt-4.7.4\4.7.4-qt-x64\include -IE:\Software\Q\qt-4.7.4\4.7.4-qt-x64\include\QtGui -c "E:\Jacky\Documents\Code Blocks Projects\PerfectSim\main.cpp" -o obj\Debug\main.o
x86_64-w64-mingw32-g++.exe -Wall -g -g -Wall -g -IE:\Software\Q\qt-4.7.4\4.7.4-qt-x64\include -IE:\Software\Q\qt-4.7.4\4.7.4-qt-x64\include\QtGui -c "E:\Jacky\Documents\Code Blocks Projects\PerfectSim\OpenGLWidget.cpp" -o obj\Debug\OpenGLWidget.o
x86_64-w64-mingw32-g++.exe -LE:\Software\Q\qt-4.7.4\4.7.4-qt-x64\lib -o bin\Debug\PerfectSim.exe obj\Debug\Camera\Camera.o obj\Debug\main.o obj\Debug\OpenGLWidget.o -lQtCore4 -lQtGui4 "C:\Program Files (x86)\Microsoft DirectX SDK (June 2010)\Lib\x64\d3dx9d.lib" E:\Software\Q\qt-4.7.4\4.7.4-qt-x64\lib\libQtCored4.a E:\Software\Q\qt-4.7.4\4.7.4-qt-x64\lib\libQtGuid4.a E:\Software\Q\qt-4.7.4\4.7.4-qt-x64\lib\libQtHelpd4.a E:\Software\Q\qt-4.7.4\4.7.4-qt-x64\lib\libqtmaind.a D:\mingw64\x86_64-w64-mingw32\lib\libuser32.a D:\mingw64\x86_64-w64-mingw32\lib\libkernel32.a D:\mingw64\x86_64-w64-mingw32\lib\libgdi32.a D:\mingw64\x86_64-w64-mingw32\lib\libgdiplus.a D:\mingw64\x86_64-w64-mingw32\lib\libd3dx9.a -mwindows
Output file is bin\Debug\PerfectSim.exe with size 549.12 KB
Process terminated with status 0 (0 minute(s), 2 second(s))
0 error(s), 0 warning(s) (0 minute(s), 2 second(s))


[BlueHazzard]

this is the build log, not the debugger log

you have to start the debugger and then copy the text from the debugger tab  from the bottom of the window

[lucky7456969]

Code Select Expand


[debug]Command-line: C:\Program Files (x86)\CodeBlocks\MinGW\bin\gdb.exe -nx -fullname  -quiet  -args E:/Jacky/DOCUME~1/CODEBL~1/PERFEC~1/bin/Debug/PERFEC~1.EXE
[debug]Working dir : E:\Jacky\DOCUME~1\CODEBL~1\PERFEC~1

Starting debugger: C:\Program Files (x86)\CodeBlocks\MinGW\bin\gdb.exe -nx -fullname  -quiet  -args E:/Jacky/DOCUME~1/CODEBL~1/PERFEC~1/bin/Debug/PERFEC~1.EXE
done

[debug]> set prompt >>>>>>cb_gdb:

Registered new type: wxString
Registered new type: STL String
Registered new type: STL Vector
Setting breakpoints

[debug]"E:/Jacky/DOCUME~1/CODEBL~1/PERFEC~1/bin/Debug/PERFEC~1.EXE": not in executable format: File format not recognized
[debug](gdb) >>>>>>cb_gdb:
[debug]> show version
[debug]GNU gdb (GDB) 7.6.1
[debug]Copyright (C) 2013 Free Software Foundation, Inc.
[debug]License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
[debug]This is free software: you are free to change and redistribute it.
[debug]There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
[debug]and "show warranty" for details.
[debug]This GDB was configured as "mingw32".
[debug]For bug reporting instructions, please see:
[debug]<http://www.gnu.org/software/gdb/bugs/>.
[debug]>>>>>>cb_gdb:
[debug]> set confirm off

Debugger name and version: GNU gdb (GDB) 7.6.1

[debug]>>>>>>cb_gdb:
[debug]> set width 0
[debug]>>>>>>cb_gdb:
[debug]> set height 0
[debug]>>>>>>cb_gdb:
[debug]> set breakpoint pending on
[debug]>>>>>>cb_gdb:
[debug]> set print asm-demangle on
[debug]>>>>>>cb_gdb:
[debug]> set unwindonsignal on
[debug]>>>>>>cb_gdb:
[debug]> set print elements 0
[debug]>>>>>>cb_gdb:
[debug]> set disassembly-flavor att
[debug]>>>>>>cb_gdb:
[debug]> catch throw
[debug]No symbol table is loaded.  Use the "file" command.
[debug]Catchpoint 1 (throw)
[debug]>>>>>>cb_gdb:
[debug]> source C:\Program Files (x86)\CodeBlocks\share\codeblocks/scripts/stl-views-1.0.3.gdb
[debug]>>>>>>cb_gdb:
[debug]> directory D:/mingw64/bin
[debug]Source directories searched: D:/mingw64/bin;$cdir;$cwd
[debug]>>>>>>cb_gdb:
[debug]> directory E:/Jacky/DOCUME~1/CODEBL~1/PERFEC~1/
[debug]Source directories searched: E:/Jacky/DOCUME~1/CODEBL~1/PERFEC~1;D:/mingw64/bin;$cdir;$cwd
[debug]>>>>>>cb_gdb:
[debug]> break "E:/Jacky/Documents/Code Blocks Projects/PerfectSim/main.cpp:7"
[debug]No symbol table is loaded.  Use the "file" command.
[debug]Breakpoint 2 ("E:/Jacky/Documents/Code Blocks Projects/PerfectSim/main.cpp:7") pending.
[debug]>>>>>>cb_gdb:
[debug]> run
[debug]No executable specified, use `target exec'.
[debug]Starting program: 
[debug]>>>>>>cb_gdb:

Starting the debuggee failed: No executable specified, use `target exec'.

[debug]> quit

Debugger finished with status 0


[lucky7456969]

I discovered the cause, due to wrong debugger setting, should be using X:\mingw64\bin\gdb.exe
However, I wonder can I designate different debuggers to different compilers?
Thanks
Jack

[oBFusCATed]

Yes, you can.

Steps:
1. Make two or more configs
2. In the toolchain settings of the compiler choose the proper config for every compiler
3. Select Debug-> Active debugger -> Target's default