Online installer fails, offline installer worked but building a project fails

Gist

I have a problem with Qt creator, what should I do?
I am a beginner in Qt, I have downloaded Qt creator ( Qt 5.6.2 for Windows 64-bit (VS 2015, 839 MB) ) , and when I started to compile a program, there were a problem with compilation, and when I verified the option I have found :

I have also tried with the online installer, but it stops at 63%

I had really a hard time :(

? Offline

Hi, and welcome to the forum. Did you install Visual Studio 2015 prior to installing Qt?

Gist

Thank you for your kindness.
No I did not, should I do it ?

SGaist

Hi and welcome to devnet,

Yes you need to do it, Microsoft doesn't allow any third party to distribute its development suits.

Note that if you don't need VS specifically you can also use the MinGW version of Qt for which you can get the compiler directly through the installer.

Gist

Thanks very much, Now I feel happy and I can relax :)
I am downloading Visual Studio, I have used it before (before 3 years ago) , I will also see MinGw.
I guess it would be better if the website of Qt did an explanation for beginners in the font of the downloading page, It would help them a lot, because when I was reading through google searching for a solution I saw some peoples have the same problem as I have, but they didn't get any feedback. Thank you very much. I hope to be productive with this forum :)
See you.

jsulm

@Gist Well, if you download Qt for VS2015 then you need VS2015, right? VS2015 cannot be included with Qt download as it is proprietary.

Gist

I downloaded Visual studio 2015, and I reinstalled Qt , but the problem still remains.

Gist

@SGaist, I downloaded Visual studio 2015, and I reinstalled Qt , but the problem still remains

jsulm

@Gist Did you install VS2015? If so did you install its C++ components as well (they are not installed by default)?

Gist

@jsulm I installed VS2015, but how can I install C++ components ?

jsulm

@Gist I think you need to start the installer again and select C++ components there.

I have a note: if you do not depend on VS then just install Qt for MinGW together with MinGW using Qt online installer, then you will have everything you need: compiler, debugger (for VS you need to install debugger tools which are not part of VS if you want to use debugger!). MinGW is the Windows port of GCC.

Gist

@jsulm, I have tried resolve the problem by installing VS but I failed, contrary to Qt for MinGW, There is no problem with it, I am working on it normally now.
The problem has been resolved.
Thanks for all of you: @jsulm , @SGaist, and @Wieland .

SGaist

Did you check that you selected the C++ tools when installing Visual Studio ? That's the important point.

? Offline

BTW, next time, please give your thread a meaningful title. Also choosing the best fitting subforum is highly appreciated. And when your problem is solved, mark the thread accordingly. We have a small visual forum guide for newcomers: Hitchhiker's Visual Guide to the Qt Forum and there is also the Forum general guide. One more thing: The image upload feature on our forum is broken, see How to insert image on this forum for a workaround. :-)