read_liberty - read cells from liberty file

yosys> help read_liberty

read_liberty [filename]

Read cells from liberty file as modules into current design.

-lib

only create empty blackbox modules

-wb

mark imported cells as whiteboxes

-nooverwrite

ignore re-definitions of modules. (the default behavior is to
create an error message if the existing module is not a blackbox
module, and overwrite the existing module if it is  a blackbox module.)

-overwrite

overwrite existing modules with the same name

-ignore_miss_func

ignore cells with missing function specification of outputs

-ignore_miss_dir

ignore cells with a missing or invalid direction
specification on a pin

-ignore_miss_data_latch

ignore latches with missing data and/or enable pins

-setattr <attribute_name>

set the specified attribute (to the value 1) on all loaded modules