How to build for x32 if my app is made with x64 kits?

Engelard

I found that my app can't be used in my old laptop which is x32 Windows. How can i build another version of my program but for x32?

I went to Options>Kits, but there is alot of them and i don't know how to use them...(and which)

jsulm

@Engelard You first need to install Qt build for x86 and a matching compiler (like VisualC++ 14 you already have). Then you will have a Kit and then use this Kit to build for 32bit.

VRonin

in the left bar of Qt Creator you can see the button "projects" click on it. On the left side under "Build & Run" you will find all the kits you have installed. Make sure the 32 bit compiler is enabled (Microsoft Visual C++ Compiler 15.0 (x86)).
Then in the left bar, click on the screen icon just above the run button select the 32 bit and the release mode then click on the hammer icon

Engelard

@jsulm yeye, but how to apply new Kit(which you just said i already have) to my current Qt project?

jsulm

@Engelard You simply select it in QtCreator on the left side

Engelard

@VRonin said in How to build for x32 if my app is made with x64 kits?:

On the left side under "Build & Run" you will find all the kits you have installed. Make sure the 32 bit compiler is enabled (Microsoft Visual C++ Compiler 15.0 (x86)).

There is only my x64 current Kit
How would i enable it?

I tried to add new Kit, then in it's preferences i select 15.0 x86 compilers for C and C++, and it all looks like this:

jsulm

@Engelard Did you install Qt for your x86 compiler? Can you show the list of your Kits?
Your Unnamed11 Kit is apparently not configured properly.

Engelard

@jsulm said in How to build for x32 if my app is made with x64 kits?:

Can you show the list of your Kits?

In the very first post i showed it.

@jsulm said in How to build for x32 if my app is made with x64 kits?:

Your Unnamed11 Kit is apparently not configured properly.

that why i created this topic

jsulm

@Engelard Please show your Unnamed11 Kit else I only can guess what the problem is and that wouldn't be very effective...
And in your first post you show only the list of your compilers, not Kits.
And you still did not say whether you installed Qt matching your 32bit compiler.

Engelard

Here is the screen of properties i changed in my Unnamed11:

This not available(Kit) probably because i can't select Qt version(on the screenshot i selected that field), i can't select current x64 because Kit become Red and imply that something wrong)

Engelard

@jsulm please don't tell me that i don't have to download and install another same Qt but for x32 version..

hskoglund

Hi, I'd just install the 32-bit versions of Qt and never bother with the 64-bit versions of Qt, because there are so many Windows installations that are still 32-bit.
(And the 32-bit version of Qt you can install and run on a 64-bit Windows, but not the other way around.)

hskoglund

Forgot to say, Visual Studio 2019 (and as I heard also Visual Studio 2021) also follow this path, i.e. they are built as 32-bit applications that can run either on a 32-bit or 64-bit version of Windows.

VRonin

@Engelard said in How to build for x32 if my app is made with x64 kits?:

please don't tell me that i don't have to download and install another same Qt but for x32 version.

Bingo!

Engelard

As i understand i can not install it from MaintainTool, only download raw setup file from some site?

Engelard

Okay, i'm done. I downloaded that 3gb, installed another Qt(same 5.12.0 version but x32) file name was: qt-opensource-windows-x86-5.12.0.exe it installed about 0.5gb in selected folder(interesting why weight of install file almost 3gb). And after all this i can't select bloody executable file when try to add Qt version!

UPDATE:

Just realised that i need qmake.exe file, and there is no such thing in whole folder of freshly installed x32 Qt!

VRonin

What you are showing in your images is Qt Creator, not Qt

Engelard

@VRonin said in How to build for x32 if my app is made with x64 kits?:

What you are showing in your images is Qt Creator, not Qt

What should it be then?

VRonin

Go to the folder where you installed Qt (not Qt Creator, it's where qmake.exe is) and start the maintenance tool, select "add or remove components" and tick the boxes as shown in the picture