How to detect armeabi and armeabi-v7a from C code

Issue

I'm building a fat APK that contains separate *.so libs for armeabi and armeabi-v7a. I build using the command line only (i.e. using ndk-build and ant). Is there a way to detect from my C code whether the ndk-buildis currently building for armeabi or for armeabi-v7a? Preferably, I would like to be able to detect this at compile time, but if there is no other choice an architecture detection at runtime would also be sufficient.

E.g. is there something like

#ifdef __armeabiv7a__
...
#else
...
#endif

to detect the architecture at compile time?

I know that I can pass additional compiler flags in LOCAL_CFLAGSin Android.mk but these flags are always passed for all architectures so it doesn't help me. Or is there a tag that I could use in Android.mk to pass specific flags for armeabi or armeabi-v7aonly?

Solution

I know that I can pass additional compiler flags in LOCAL_CFLAGS in Android.mk but these flags are always passed for all architectures

There's nothing preventing you from setting a flag only when building for a certain ABI:

ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
    LOCAL_CFLAGS += -DARMEABI_V7A
endif

Answered By - Michael