安装步骤

1. 下载Qt5资源包（完整资源包、基础资源，包二选一）

   完整资源包下载命令：wget http://master.qt.io/archive/qt/5.15/5.15.2/single/qt-everywhere-src-5.15.2.tar.xz 
   基础包下载命令：wget http://master.qt.io/archive/qt/5.15/5.15.2/submodules/qtbase-everywhere-src-5.15.2.tar.xz
   

2. 配置和安装Qt5

   解压：tar -xpf qtbase-everywhere-src-5.15.2.tar.xz
   切换路径：cd qtbase-everywhere-src-5.15.2/
   配置./configure -xcb
   编译：make -j4
   安装：sudo make install
   # 通常安装在 /usr/local/Qt-5.15.2
   

3. 检测依赖

   依赖：Python: 3.5+, Qt: 5.12+, libclang: version10, CMake:3.1+, llvm: version10
   建议使用synaptic管理包
   sudo apt-get install synaptic
   

4. 下载并构建PySide2

   git clone http://code.qt.io/pyside/pyside-setup.git
   cd pyside-setup/
   git checkout 5.15.2
   

5. 安装PySide2

   sudo python setup.py install --qmake=/usr/local/Qt-5.15.2/bin/qmake
   

6. 检验是否安装成功

   python
   from PySide2 import *
   

常见报错

错误1：
– LLVM_CONFIG: /usr/local/bin/llvm-config
CMake Error at data/shiboken_helpers.cmake:180 (message):
Unable to find the Clang library in /usr/local. Names tried: clang,
libclang.so, libclang.so.1.
Call Stack (most recent call first):
CMakeLists.txt:39 (setup_clang)
解决方案：
dpkg -l | grep clang
dpkg -l | grep llvm