如何为 Windows 构建 Qt？

Question

I am trying to get Qt working for Windows. I am starting at: https://wiki.qt.io/Building_Qt_5_from_Git#Getting_the_source_code .

I could clone the Git repository, but nothing works then:

..\\qt5\configure -developer-build -opensource -nomake examples -nomake tests

It brings me error on command not found:

   + CategoryInfo          : ObjectNotFound: (../qt5/configure:String) [], CommandNotFoundException
   + FullyQualifiedErrorId : CommandNotFoundException

The files configure and configure.bat exist in the right place... Running nmake brings an error on a missing makefile...

I didn't see there was a binary and I installed it. Now, in QtCreator, I have another problem. I try to add a new empty project, and when I must enter a kit I got this: capture:

What must I do? I can't select anyone.

After reinstalling Qt, I could find the kits, but when I compile a simple program:

#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    return app.exec();
}

I got this error:

MSVCRTD.lib(exe_winmain.obj):-1: error: LNK2019: unresolved external symbol  WinMain r‚f‚renc‚ in function "int __cdecl invoke_main(void)" (?invoke_main@@YAHXZ)

Finally adding CONFIG += console to the.pro file fixed the issue.

Answer 1

Here are the commands I use to compile Qt5 under Windows (you'll need to update the paths and options to suit your situation of course):

cd C:\Qt\qt-everywhere-opensource-src-5.xx.y
configure -prefix %CD%\qtbase -opensource -nomake tests -nomake examples
nmake

(On the very latest versions of Qt, eg 5.15.4, you can call jom instead of nmake in order to get a faster compile)