install 
ti_cgt_pru_2.3.3_linux_installer_x86.bin
to (my case)
/home/gcat/dk2/sdkpru

unzip 
pru-software-support-package-5.7.0.zip
to (my case)
/home/gcat/dk2/pru_test

#set envirenment (my case)
export PRU_CGT=/home/gcat/dk2/sdkpru
export PRU_SSP=/home/gcat/dk2/pru_test/pru-software-support-package-5.7.0

#test 
~/dk2/pru_test/pru-software-support-package-5.7.0/labs/Getting_Started_Labs/c_code/solution/am335x
make
#If the envirenment is ok and you will get :
~/dk2/pru_test/pru-software-support-package-5.7.0/labs/Getting_Started_Labs/c_code/solution/am335x/gen/am335x.out

#build code
untar PRU_LEDxR_GPIOx.x.tar
make