i build `skywater-pdk` from HEAD by following the instructions. i have `magic` v 8.3.305 installed. ...

aryap

08/27/2022, 6:46 AM

i build

skywater-pdk

from HEAD by following the instructions. i have

magic

v 8.3.305 installed. i then try to install

open_pdks

by pointing to this and i get the error:

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Error:  Magic version 8.3.306 is required by this techfile, but this version of magic is 8.3.305.

but i can't install magic 8.3.306 because I get this linker error on compile (and I don't get it with 8.3.305):

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/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x20): undefined reference to `main'

how do i install the pdk now?

aryap

08/27/2022, 6:53 AM

i tried to have

open_pdks

pull and build skywater-pdk itself but i get this error:

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make[3]: *** [Makefile:1473: digital-lp-B] Error 1
make[3]: Leaving directory '/home/arya/src/pdk-root/open_pdks/sky130'
make[2]: *** [Makefile:1119: digital-lp-build-B] Error 2
make[2]: Leaving directory '/home/arya/src/pdk-root/open_pdks/sky130'
make[1]: *** [Makefile:756: all-B] Error 2
make[1]: Leaving directory '/home/arya/src/pdk-root/open_pdks/sky130'
make: *** [Makefile:130: tech-sky130] Error 2

which seems to be an existing issue https://github.com/RTimothyEdwards/open_pdks/issues/263

Vijayan Krishnan

08/27/2022, 7:10 AM

is there any specific reason behind installing skywater pdk from source? Why can't use pre-built pdk from OpenLane/ caravel master?

aryap

08/27/2022, 9:04 AM

i don't need to use openlane, i just want the PDK files

aryap

08/27/2022, 9:05 AM

is that the only way it works now?

Vijayan Krishnan

08/27/2022, 9:20 AM

Directly PDK installation i'm not tried. Follow up github issue or wait for other experts to answer this

Vijayan Krishnan

08/27/2022, 9:21 AM

try this doc only for pdk installation: https://github.com/The-OpenROAD-Project/OpenLane/blob/master/docs/source/building_the_pdk.md

aryap

08/29/2022, 2:25 AM

again i want to minimise dependencies.

volare

is a wrapper for a working build that relies on docker, which I don't have

aryap

08/29/2022, 2:26 AM

thanks for the suggestion though

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