export CARAVEL_ROOT=/home/nguyendao/SKY130/gg-mpw3-2021/fuserisc/caravel
export PDK_ROOT=/home/nguyendao/SKY130/gg-mpw3-2021/eFPGA_v3_caravel
export OPENLANE_ROOT=/home/nguyendao/SKY130/gg-mpw3-2021/OpenLane