1、創建工作目錄：c:/path/to
2、下載CMake：https://cmake.org/download/
設置CMake環境變量：set PATH=%PATH%;C:\Users\Administrator\Desktop\cmake-3.16.0-win32-x86\bin
3、下載安裝git，一路默認選項： https://git-scm.com/download/win
設置git環境變量：set PATH=%PATH%;C:\Program Files\Git\cmd
4、下載protobuf源碼：
C:\Path\to> git clone -b master https://github.com/protocolbuffers/protobuf.git
5、更新子模塊：
C:\Path\to>protobuf> git submodule update --init --recursive
6、進入源碼cmake目錄：
C:\Path\to\protobuf>cd cmake
7、創建臨時編譯目錄
C:\Path\to\protobuf\cmake>mkdir build & cd build
8、根據個人需要，創建release或者debug目錄：
release:
C:\Path\to\protobuf\cmake\build>mkdir release & cd release
C:\Path\to\protobuf\cmake\build\release>cmake -G "NMake Makefiles" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=../../../../install ../..
debug:
C:\Path\to\protobuf\cmake\build>mkdir debug & cd debug
C:\Path\to\protobuf\cmake\build\debug>cmake -G "NMake Makefiles" -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=../../../../install ../..
9、創建Visual Studio solution（sln）文件:
C:\Path\to\protobuf\cmake\build>mkdir solution & cd solution
C:\Path\to\protobuf\cmake\build\solution>cmake -G "Visual Studio 15 2017" -Dprotobuf_BUILD_TESTS=OFF -DCMAKE_INSTALL_PREFIX=../../../../install ../..
10、編譯：
C:\Path\to\protobuf\cmake\build\release>nmake
或者
C:\Path\to\protobuf\cmake\build\debug>nmake
或者
用vs打開 sln 文件進行編譯
