QGISC++源码编译

QGIS源码下载：https://github.com/qgis/QGIS/releases

Visual Studio 2019安装https://visualstudio.microsoft.com/zh-hans/downloads/

Cmake下载地址：https://cmake.org/download/

Cygwin64下载地址：https://cygwin.com/install.html   下载bison、flex

OSGeo4w下载地址：http://trac.osgeo.org/osgeo4w/  下载qgis-dev-deps

此处需注意！很多人下载的缺少py3_env.bat和qt5_env.bat，需要用老版安装文件选择http://gwmodel.whu.edu.cn/mirrors/osgeo4w

QGIS源码放在C:\OSGeo4W\QGIS下，并创建build文件夹作为输出目录

点击配置

set OSGEO4W_ROOT=C:\OSGeo4W64
call "%OSGEO4W_ROOT%\bin\o4w_env.bat“
call "%OSGEO4W_ROOT%\bin\py3_env.bat“
call “%OSGEO4W_ROOT%\bin\qt5_env.bat”
path %path%;%QtDir%\bin;%OSGEO4W_ROOT%\bin;C:\cygwin64\bin
set O4W_ROOT=%OSGEO4W_ROOT:\=/%
set LIB_DIR=%O4W_ROOT%
set GRASS_PREFIX=%OSGEO4W_ROOT%/apps/grass/grass80
set INCLUDE=%INCLUDE%;%OSGEO4W_ROOT%\include
set LIB=%LIB%;%OSGEO4W_ROOT%\lib;%OSGEO4W_ROOT%\lib
set LIB=%LIB%;%OSGEO4W_ROOT%\lib
“C:\Program Files\CMake\bin\cmake-gui.exe“(启动cmake)

 

Could not find PyQt5，报错信息，解决方法，更改环境变量！

 

 C:\Program Files\QGIS 3.16.14\apps\Python39

C:\Program Files\QGIS 3.16.14\apps\qgis-ltr\python;C:\Program Files\QGIS 3.16.14\apps\qgis-ltr\bin;C:\Program Files\QGIS 3.16.14\apps\qgis-ltr\python\qgis;C:\Program Files\QGIS 3.16.14\apps\Python39\lib;C:\Program Files\QGIS 3.16.14\apps\Python39\lib\site-packages;C:\Program Files\QGIS 3.16.14\apps\Python39\DLLs;C:\Program Files\QGIS 3.16.14\apps\Python39\Scripts;

点击Configure生成，点击Generate配置

 找到源码位置

 用VS2019打开，运行，OK