[SOLVED] - Detecting OS - runtime vs build

[maximus]

Hi guys,

I'm currently developing a software that is available for Mac, Windows and Linux and maybe IOS later.
I want to pop up a link when the user start my application, the link will be different if the OS is Mac/Win/Linux.

Is it better to do this kind of coding at build time with
@ #ifdef WIN32
OS = "WIN";
#else
OS = "MAC";
....@

Or at runtime with QSysInfo ?
Thanks in advance!

[maximus]

Solved with this added in Main.cpp:

@ QString OS;
#ifdef Q_OS_WIN32
OS = "WIN";
#elif Q_OS_MAC
OS = "MAC";
#else
OS = "LINUX";
#endif
qDebug () << "OS IS: " << OS;
app.setProperty("OS", QVariant(OS));@