Application.mk

APP_PLATFORM := android-23 #This variable contains the minimum Android platform version 
                           #you want to support.
APP_OPTIM := debug   #Define this optional variable as either release or debug. 
APP_ABI := armeabi-v7a x86 #You can use the APP_ABI setting to 
                           #generate machine code for specific ABIs
NDK_TOOLCHAIN_VERSION:=4.9 #Define this variable as 4.9 to select that version of 
                           #the GCC compiler. Define this variable as clang to select 
                           #the Clang compiler, which is the default value for NDK r13 and later.