Why Qt taking long time to building the project?

Wasee

Hi everyone;
I am building the Qt widget application but its taking a long time to build why?
thanks

jsulm

@Wasee said in Why Qt taking long time to building the project?:

its taking a long time to build why?

You should provide more information:

How big is the application (lines of code)?
What platform, compiler and Qt version?

Also, did you enable parallel build? Either use ninja instead of make or add "-j NUMBER_OF_CORES" to your build settings to tell make to do as many parallel builds as your CPU has cores (replace NUMBER_OF_CORES with the number of cores in your CPU).

Wasee

@jsulm Hi;

*I have 762 lines in code

Platform Arm A-9, Compiler GCC, and Qt5.

thanks

jsulm

@Wasee said in Why Qt taking long time to building the project?:

Platform Arm A-9, Compiler GCC, and Qt5.

Well, seems to be rather slow hardware.
Did you try what I suggested?

JonB

@Wasee
In addition to @jsulm, how long is "but its taking a long time to build", and how much free RAM do you have?

Wasee

@jsulm Hi;
I am unable to find the setting you suggested.
thanks

jsulm

@Wasee In QtCreator (I assume you build in QtCreator): on the right side "Projects/Build&Run/Build/Build Steps". Do you see "make -j..." in Make step there?

You still don't provide much information:

How many cores does the CPU have?
How much RAM does the machine have?
Qt5 is quite fuzzy as there are many Qt5 versions
Also GCC is fuzzy, as there are many different versions

Don't expect same performance from an ARM device (except it is Apple silicon :-)) as from your PC/Laptop.

Wasee

@jsulm @JonB Hi;
Architecture: ARMv7
Byte Order: Little Endian
CPU(s): 2
On-line CPU(s) list: 0,1
Thread(s) per core: 1
Core(s) per socket: 2
Socket(s): 1
total used free shared buff/cache available
Mem: 1.0G 480M 524M 10M 40M 224M
Swap: 0B 0B 0B
Qt Version:5.2.1
GCC version:arm-linux-gnueabihf-gcc

thanks

jsulm

@Wasee Make sure you use both CPU cores when compiling.
And again: this is rather slow hardware, don't expect fast builds (you actually still not tell us how long it takes).

Wasee

Hi everyone;
I build the project successfully. But I am facing the problem with running the application. When I login the application then it does not open and gives an error.
ASSERT failure in QList<T>:: at: "index out of range", file /usr/include/qt5/QtCore/qlitst.h/ line 472
The program has been unexpectedly finished.

thanks

jsulm

@Wasee Answered here: https://forum.qt.io/topic/132513/run-bash-script-from-qt/10
Please learn to ask proper question providing needed information/code...