How to detect target iOS architecture in qmake?

问题

I have a Qt Version that supports following ABI's (Qt Creator → Preferences → Build & Run / Qt Versions):

• arm-macos-generic-mach_o-32bit
• arm-macos-generic-mach_o-64bit
• x86-macos-generic-mach_o-32bit
• x86-macos-generic-mach_o-64bit

So, combining in a Qt Kit this Qt Version with different compilers I can build libs for all mentioned architectures.

At the same time the mkspecs/qconfig.pri contains:

host_build {
    QT_ARCH = x86_64
    QT_TARGET_ARCH = arm
} else {
    QT_ARCH = arm
}

So, in a .pro file I can not detect a target architecture (it is always arm). I can check CONFIG for iphonesimulator value and so detect arm/not arm architecture but there is still 32bit/64bit issue.

Is there a way to distinguish armv7/arm64/... builds in qmake (.pro file)?

回答1:

The only method I found is:

Qt Creator → Preferences → Build & Run / Kits → Environment → Change...

Than set specific IOS_ARCH env var for each kit.

In .pro file:

IOS_ARCH = $$(IOS_ARCH)
!isEmpty(IOS_ARCH): TARGET_ARCH = $$IOS_ARCH
# then use $$TARGET_ARCH as usual

来源：https://stackoverflow.com/questions/39338987/how-to-detect-target-ios-architecture-in-qmake