1. Export Library
2. Abstract Generator
a. Pin
b. Extract
c. Abstract
d. Verify
e. Export to .LEF
This step creates the abstract views of all the cells in the library. Abstract view of a cell contains only metal layers and it tells the place-&-route tools where the routing layers can go and where it cannot go. Without the abstract view, automatic place-&-route is impossible. The final product of this step is the generation of a .lef file which contains the abstract information, and will be used later by place-&-route tools. Some technology files are needed in this step. For our standard cell library, the following are needed.
Create a folder inside standardcell called abgen, save the above files in the abgen folder.