# 下载，解压
tar -xf gcc-11.1.0.tar.xz
cd gcc-11.1.0.tar
# 安装必要编译工具
sudo apt install build-essential
# 安装依赖库
sudo apt install libgmp-dev
# 生成makefile文件
./configure
# 编译安装
make -j 10
sudo make install

sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt-get update
sudo apt install gcc-11
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-11 110 --slave /usr/bin/g++ g++ /usr/bin/g++-11 --slave /usr/bin/gcov gcov /usr/bin/gcov-11

[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Lxss\{a7b6183f-cc3e-4388-a97a-502a98efca90}]
"DefaultUid"=dword:00000000

[wsl2]
memory=4GB # Limits VM memory in WSL 2 to 4 GB
processors=4 # Makes the WSL 2 VM use two virtual processors