Update README.md, bump cmake version to 3.20 (#335)

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Qiaojin.Bao 2023-09-18 18:16:19 +08:00 committed by GitHub
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@ -81,7 +81,7 @@ Please make each contribution reasonably small. If you would like to make a big
It is recommended to install at least 16GB RAM in your build system.
### Build System
* CMake 3.15 or newer is required. [Download](https://cmake.org/download/) and install proper one if the cmake is older than 3.15.
* CMake 3.20 or newer is required. [Download](https://cmake.org/download/) and install proper one if the cmake is older than 3.20.
* Ninja is required.
### Install Dev and Tools Packages
@ -99,13 +99,6 @@ dpkg --add-architecture i386
sudo apt-get install libssl-dev:i386 libx11-dev:i386 libxcb1-dev:i386 libxcb-dri3-dev:i386 libxcb-dri2-0-dev:i386 libxcb-present-dev:i386 libxshmfence-dev:i386 libwayland-dev libwayland-dev:i386 libxrandr-dev:i386
```
#### RedHat
```
wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
sudo yum localinstall epel-release-latest-7.noarch.rpm
sudo yum update
```
##### 64-bit
```
sudo yum -y install openssl-devel gcc-c++ python3 curl glibc-devel libstdc++-devel libxcb-devel libX11-devel libxshmfence-devel libXrandr-devel wayland-devel