How to configture cmake project without FetchContent?

[xiaowuga]

Network issues often arise, especially in China.
Can I use find_package(libigl) to get target now？

[sky92archangel]

maybe , you should use VPN , and set proxy IP:PORT in the CLI ;
for exsample , if your clash started , type the command in CLI:
git config --global http.proxy http://127.0.0.1:7890
git config --global https.proxy http://127.0.0.1:7890
then,use cmake as the README.md said