Compiling a Qt application in order to get better debuginfos (Linux) - c++

Question

I downloaded FabariaGest source code then to compile it you have to run:
on qt 4 systems:
cmake -DMAKE_INSTALL_PREFIX=directory -DWANT_QT4=ON -DWANT_QWT=ON
on qt5 systems:
cmake -DMAKE_INSTALL_PREFIX=directory -DWANT_QT5=ON -DWANT_QWTQT5=ON
When it finishes, you run
# make install
Since I get a segmentation fault when I start the software, I tried to run
cd /opt/fabaria_gest
gdb fabaria_gest
run
backtrace
but I only get
[user#localhost fabaria_gest]$ gdb fabaria_gest
GNU gdb (GDB) Fedora 7.9.1-19.fc22
Copyright (C) 2015 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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and "show warranty" for details.
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Reading symbols from fabaria_gest...(no debugging symbols found)...done.
(gdb) run
Starting program: /opt/fabaria_gest/fabaria_gest
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Detaching after fork from child process 7246.
[New Thread 0x7fffe0798700 (LWP 7244)]
Program received signal SIGSEGV, Segmentation fault.
0x00000000004f568c in QBasicAtomicInteger<int>::load() const ()
(gdb) backtrace
#0 0x00000000004f568c in QBasicAtomicInteger<int>::load() const ()
#1 0x0000000000502a92 in QtPrivate::RefCount::ref() ()
#2 0x0000000000502e37 in QString::QString(QString const&) ()
#3 0x00000000006b9709 in _ZL13getSystemInfov ()
#4 0x00000000006bc29f in main ()
(gdb)
#0 0x00
What can I do to recompile the software in order to get better debuginfos? Setting set follow-fork-mode in GDB did not help

Answer 1

Using
cmake -DCMAKE_BUILD_TYPE=Debug ...
will instruct cmake to generate debug information, which should make the backtrace easier to read.