../dnn/test/fallback/gi.cpp:38:33: error: ‘isnan’ was not declared in this scope, and no declarations were found by argument-dependent lookup at the point of instantiation [-fpermissive]

[yhl41001]

./third_party/prepare.sh
编译的时候遇到错误：../dnn/test/fallback/gi.cpp:38:33: error: ‘isnan’ was not declared in this scope, and no declarations were found by argument-dependent lookup at the point of instantiation [-fpermissive]

[chenqy4933]

麻烦问一下，你的编译环境，以及编译器gcc的版本？

[chenqy4933]

我这边没有复现，你可以试试使用这个发版的docker环境build：https://github.com/MegEngine/MegCC/blob/main/script/docker/Dockerfile