How to analyze a KIT environment variable

Michael65589

Hi,
I want to use one QT application with two different KITs. One is for Linux (Ubuntu 18.04) and the other is for an embedded System (ARM).
Therefore I have to switch the include paths in the .pro file.
I set an environment variable in every KIT called TARGET. How can I create a if condition inside the .pro file? Or is there a possibility to use it like the standard defines unix, macx?

Thanks

sierdzio

The contains function should do the job.

Although more standard approach is to modify the behaviour of qmake using CONFIG instead.

contains(YOUR_ENV_VAR, "someValue") {
  message("The variable contains some value")
}

Remember to change your env. var name from TARGET to something other - TARGET is already a keyword in qmake.

Michael65589

Hi sierdzio,
thanks for the fast reply but it doesn't work for me. I changed the Variable to TESTVAR=EMBEDDED and add the following line to .pro file:

contains(TESTVAR,EMBEDDED) {
INCLUDEDIR += ...
}

I also tried contains($TESTVAR,EMBEDDED) and contains(TESTVAR,"EMBEDDED") and contains($TESTVAR,"EMBEDDED") but nothing works.

Where is my mistake?

sierdzio

Perhaps this will:

LOCAL_VAR=$$(YOUR_ENV_VAR)
contains(LOCAL_VAR, "EMBEDDED") {
  INCLUDEDIR += ...
}

Michael65589

Ah that was my mistake. I have to set a local variable to use the contains command.
Okay that's the way I can use the environment variable inside the .pro file. How can I access the environment variable inside a .cpp file? With a #if directive?

hskoglund

Hi, in a .cpp file you can use getenv(), like this:

QString target = getenv("TARGET");

Michael65589

That's it.
Thanks a lot

SGaist

@hskoglund said in How to analyze a KIT environment variable:

Hi, in a .cpp file you can use getenv(), like this:
QString target = getenv("TARGET");

Or qEnvironmentVariable which returns a QString.