Answer :
When you use more than two static libraries you should put import-module more than twice like this
include $(BUILD_SHARED_LIBRARY)
$(call import-module,android/native_app_glue)
$(call import-module,cpufeatures)
According to the reference in NDK folder :
import-module
A function that allows you to find and include the Android.mk
of another module by name. A typical example is:
$(call import-module,<name>)
And this will look for the module tagged <name> in the list of
directories referenced by your NDK_MODULE_PATH environment
variable, and include its Android.mk automatically for you.