[Question] Cross platform compiler condition

[jhayar]

Hi, would like to ask the list of compiler condition so that the compiler knows what headers are related for the platform

Android = Q_WS_ANDROID ?? is this correct ? if yes how about other platform thanks
iOS
Mac
Windows
Linux

[jsulm]

@jhayar Not sure I understood your question.
Take a look at https://doc.qt.io/qt-6/qmake-language.html "Platform Scope Values".

[jhayar]

hi thanks for the reply ,
but my concern is not the platform condition in .pro file

what i'm asking is the compiler options in .cpp file

example below
#ifndef ANDROID
include <android/related/files.h>
#elseif IOS
include <ios/releated/files.h>

thanks :)

[jsulm]

@jhayar Use scopes and DEFINES:

win32:DEFINES += USE_MY_STUFF

[jhayar]

@jsulm said in [Question] Cross platform compiler condition:

@jhayar Use scopes and DEFINES:

win32:DEFINES += USE_MY_STUFF

Hi , is this for cpp file ?

[jsulm]

@jhayar No, see https://doc.qt.io/qt-6/qmake-variable-reference.html#defines

[jhayar]

@jsulm said in [Question] Cross platform compiler condition:

@jhayar No, see https://doc.qt.io/qt-6/qmake-variable-reference.html#defines

hi , if that is not on the c++ level, that is not what i'm looking for

i'm looking for something like this

is there something similar on that ?

so when i run the compiler, it will compile according to the platform defined ?

Thanks :)

[jsulm]

@jhayar Please read the documentation!
What I posted is EXACTLY what you are looking for!
This in pro file:

win32:DEFINES += USE_MY_STUFF

means you can do in cpp file:

#ifdef USE_MY_STUFF

[jhayar]

@jsulm said in [Question] Cross platform compiler condition:

@jhayar Please read the documentation!
What I posted is EXACTLY what you are looking for!
This in pro file:

win32:DEFINES += USE_MY_STUFF

means you can do in cpp file:

#ifdef USE_MY_STUFF

got this thanks will check it again thanks :)

[JonB]

@jhayar
Just so you know: Qt's .pro's DEFINES generates -D<symbol> argument to the compiler for each entry in it. So DEFINES += USE_MY_STUFF means -DUSE_MY_STUFF will be added on the command line, to satisfy any #ifdef USE_MY_STUFF. And of course the leading win32: means it only does this if the target in win32.

[SGaist]

Hi,

You have the full list of macros here in Qt's documentation.

[jhayar]

@SGaist got this , thank you , will mark this as solved for now thanks a lot guys :)