Hi, I am trying to install OpenLane following the instructions here https://github.com/The-OpenROAD-Project/OpenLane, but I already have open_pdks and the skywater-pdk setup with make timing run. I want to skip the make pdks step and provide a PDK_ROOT to calling make test. But even if I export PDK_ROOT=/usr/local/share/pdk the make test or even make mount seem to override PDK_ROOT to the pdks folder in my OpenLane directory. How can I call make test or make mount but provide my own PDK paths?

This is not recommended. Use the openpdk generated by the OpenLane. It takes 20 minutes and 3GB of space to build.

@User my apologies I missed the notification, thanks for looking into this! I am on version 2022.03.03_02.36.44 I ran: $ export PDK_ROOT=/usr/local/share/pdk before running make test, but it appears that the makefile is overriding this.

Could you try to not use sudo for make test? Also type env (or similar command for your shell) that outputs the enviorments. The override variable external pdk installation in particular

@User You can port any PDK with openlane. But its should follow hierarchy as follows: https://github.com/The-OpenROAD-Project/OpenLane/blob/master/docs/source/pdk_structure.md

@User He is not porting a pdk, just trying to use his prebuilt sky130A one

First export PDK_ROOT=<path> followed by

make pull-openlane

I have a new theory of what happened here.

sudo make test

is possibly not considering my user space’s PDK_ROOT env variable (as root won’t have it?) So instead I’ll try

sudo PDK_ROOT=<custom path> make test

next

Yes this is correct sudo overrides your enviorment. There is option to force it to not override it. But again: better build it somewhere you have access to.