project file for 64 and 32 bit under linux

[Lykurg]

Ok, I read the docs for you:

BITSIZE = $$system(getconf LONG_BIT)
if (contains(BITSIZE, 64)) {
  message($$BITSIZE)
}
if (contains(BITSIZE, 32)) {
  message($$BITSIZE)
}
 
linux-g++ {
  message(On Linux)
}
macx-g++ {
  message(On Mac)
}

BITSIZE = $$system(getconf LONG_BIT)
if (contains(BITSIZE, 64)) {
  message($$BITSIZE)
}
if (contains(BITSIZE, 32)) {
  message($$BITSIZE)
}

linux-g++ {
  message(On Linux)
}
macx-g++ {
  message(On Mac)
}

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for

qmake -spec macx-g++ test.pro

it outputs

Project MESSAGE: 64
Project MESSAGE: On Mac