新版的qtcreator只要指定下emsdk的目录即可，更简单。

1. 下载好 GitHub - emscripten-core/emsdk: Emscripten SDK

2. 解压出目录 emsdk-main，进入cmd执行

emsdk install 1.39.8 或者 2.0.14 或者 latest

emsdk activate 1.39.8

emsdk activate --embedded 1.39.8 或者对应版本

执行 em++ --version 查看版本。

3. qtcreator 设备 webassembly 选择 emsdk-main 目录，自动识别。如果有多个Qt版本不同需要，动态切换这个目录即可。比如Qt5.15对应选择1.39.8，Qt6.2选择2.0.14。

4. 切换到构建套件看下是否正常。

https://feiyangqingyun.gitee.io/qwidgetdemo/

降级go版本到1.6就可以。

sudo apt -f install

sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak

sudo vim  /etc/apt/sources.list

//配置内容如下

deb http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse 

deb http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse 

deb http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse 

deb http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse 

deb http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse 

deb-src http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse 

deb-src http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse 

deb-src http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse 

deb-src http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse 

deb-src http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse focal

sudo apt-get update

sudo apt-get upgrade