I loaded the piControl C-stuff via git
git clone https://github.com/RevolutionPi/piControl.git

I can compile piTest. But in piControl make shows
epics@RevPi12773:~/REVPI/piControl $ make
echo "#define COMPILETIME \""`date`"\"" > compiletime.h
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- -C M ...