ICC如何正确导出gds文件

各位好，问一个问题哈，我要把ICC布局布线后的gds设计导到virtuoso中进行修改，请问怎么设置ICC的set_write_stream_options?
下面是我的report_write_stream_options的信息。
icc_shell> report_write_stream_options
Report stream out options
***********************************
Layer mapping file name: (null)
Rename cell file name: (null)
Child cell depth: 0
Skip reference lib cells: false
Text height width ratio: 1.000000
Text width: 0.000000
Flatten contact: false
Flatten contact array: false
Contact prefix: $$
Output notch: false
Output gap: false
Output fill: false
Output outdated fill: false
Output instance name as property: false
Output geometry property: false
Strip backslash from instance net names: false
Long name length: -1
Keep data type: false
By layer number:
Output compressed OASIS: false
Output compressed GDSII: false
Output pin as text: false
Output pin as geometry: false
Pin name magnitude: 1.000000
Net name magnitude: 1.000000
Rotate pin text by access direction: false
Output net as text: false
Output net as property: false
Output net as plex: false
Output odd pin: false
Design intent struct name: (null)
Critical name list: (null)
Design intent layer mapping: (null)
With original data: true
Output design intent data: false
***********************************
谢谢~

do not know

学习中，求解释~

同困惑

沒給 layer mapping file, ICC layer number 不一定與 Layout tf 的 layer number 對應.
若 foundry 沒附. 自己寫.

icc 写出来的gds layer 不全 建议写个hier的gds 然后再merge

layer, layer number, layer mapping