[SOLVED] Debugging QT project through GDB in COMMAND LINE

Aquarius_Girl · 01-31-2011, 12:34 AM

First step will obviously be to compile the QT project with -g option, but how to do that through command line?

Sergei Steshenko · 01-31-2011, 03:36 AM

Quote:

Originally Posted by Anisha Kaul

First step will obviously be to compile the QT project with -g option, but how to do that through command line?

Doesn't Qt build mechanism have a notion of compiler switches ?

Anyway, one can always write a wrapper around 'g++' so that the wrapper would actually call 'g++ -g ...', and provide the wrapper through $PATH or as compiler to a build mechanism.

Aquarius_Girl · 01-31-2011, 03:52 AM

Thanks for responding, but I couldn't understand much of your post.

With the compiler switches did you mean this? http://doc.trolltech.com/4.3/qmake-v...html#qmake-cxx

You mean I am supposed to put QMAKE_CXXFLAGS_DEBUG in the Makefile? or I am barking at the wrong tree?

Sergei Steshenko · 01-31-2011, 04:13 AM

Quote:

Originally Posted by Anisha Kaul

Thanks for responding, but I couldn't understand much of your post.

With the compiler switches did you mean this? http://doc.trolltech.com/4.3/qmake-v...html#qmake-cxx

You mean I am supposed to put QMAKE_CXXFLAGS_DEBUG in the Makefile? or I am barking at the wrong tree?

Looks like QMAKE_CXXFLAGS_DEBUG is the right thing to use.

Aquarius_Girl · 02-02-2011, 02:25 AM

I have added this to the .pro file:

Code:

QMAKE_CXXFLAGS_DEBUG *= -pg
QMAKE_LFLAGS_DEBUG *= -pg

inspired from here: http://www.qtcentre.org/archive/index.php/t-4957.html

mac.tieu · 02-02-2011, 05:31 AM

Try to run 'qmake' again with parameter 'CONFIG+=debug' then 'make clean' and 'make'.

MT.

Aquarius_Girl · 02-02-2011, 05:40 AM

Thanks but I am using QtCreator, so I just build the project through QtCreator and then when I ran the the executable with GDB, GDB was able to read the symbols.