I just see for another app using nrf24 on cubieboard
and funcrtion to use nrf24 have GPIO defining is RF24 radio(SUNXI_GPB(10), SUNXI_GPB(11), "/dev/spidev0.0");
GPIO set using this style: SUNXI_GPB(10), this type of gpio defined in #include "gpio_sun4i.h" file. Maybe this specific defining in ARCHLINUX ARM distro.