What is the purpose of 'make qmake_all'?

[Maluna34]

Hello !

I'm trying to build a Qt project from the command line.
So I looked at the commands run in Qt Creator when building a project.
And after the qmake, I saw a make qmake_all.

So basically, instead of having:

qmake
make

we have:

qmake
make qmake_all
make

But what is exactly the goal of make qmake_all? Do I need to run it?
It seems that it's running all the qmake of subprojects but by running make it's also doing it. Do I keep it?

Thanks for your help!!

[SGaist]

Hi,

This is just speculation but if memory serves well, people often forget to rerun qmake when adding or removing the Q_OBJECT macro and thus having build issues. That target was likely added to the Qt Creator flow to avoid this failure that triggered quite a few threads on this forum.

[Maluna34]

Ok I understand. Thank you!