如何在使用 Visual Studio 2019 构建的 CMake 忍者项目中包含 MFC？

Question

我有一个像这样的 C++ 项目结构：

mfc_ninja
├── CMakeLists.txt
├── source.cpp

CMakeLists.txt

cmake_minimum_required(VERSION 3.19)

project(mylib)

add_definitions(-D_AFXDLL)
set(CMAKE_MFC_FLAG 2)
add_library(${PROJECT_NAME} SHARED source.cpp)

source.cpp

#include <afxwin.h>

我用 Visual Studio 2019 打开目录

mfc_ninja

。然后我转到菜单 Project 和 Generate cache，它按预期工作。当我尝试构建项目时，出现错误：

Error C1083 Cannot open include file: 'afxwin.h': No such file or directory

我没有使用 MFC 的经验。我想将现有的 Visual Studio 解决方案移植到纯 CMake。对于可执行文件，我发现你必须用

add_executable

定义

WIN32

。但是对于

add_library

，这不存在。

如何使用纯 CMake 针对 MFC 构建库？

---

我更新了

CMakeLists.txt

以使用

FindMFC

，如评论中所述：

cmake_minimum_required(VERSION 3.19)

project(mylib)

find_package(MFC REQUIRED)
message(STATUS "MFC_FOUND: ${MFC_FOUND}")

add_library(${PROJECT_NAME} SHARED source.cpp)

输出告诉我它没有找到 MFC：

1> CMake generation started for default configuration: 'x64-Debug'.
1> Command line: "cmd.exe" /c "%SYSTEMROOT%\System32\chcp.com 65001 >NUL && "C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2019\PROFESSIONAL\COMMON7\IDE\COMMONEXTENSIONS\MICROSOFT\CMAKE\CMake\bin\cmake.exe"  -G "Ninja"  -DCMAKE_BUILD_TYPE:STRING="Debug" -DCMAKE_INSTALL_PREFIX:PATH="C:\Users\benjamin.buch\source\repos\mfc_ninja\out\install\x64-Debug" -DCMAKE_C_COMPILER:FILEPATH="C:/Program Files (x86)/Microsoft Visual Studio/2019/Professional/VC/Tools/MSVC/14.28.29910/bin/Hostx64/x64/cl.exe" -DCMAKE_CXX_COMPILER:FILEPATH="C:/Program Files (x86)/Microsoft Visual Studio/2019/Professional/VC/Tools/MSVC/14.28.29910/bin/Hostx64/x64/cl.exe"  -DCMAKE_MAKE_PROGRAM="C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2019\PROFESSIONAL\COMMON7\IDE\COMMONEXTENSIONS\MICROSOFT\CMAKE\Ninja\ninja.exe" "C:\Users\benjamin.buch\source\repos\mfc_ninja" 2>&1"
1> Working directory: C:\Users\benjamin.buch\source\repos\mfc_ninja\out\build\x64-Debug
1> [CMake] -- The C compiler identification is MSVC 19.28.29915.0
1> [CMake] -- The CXX compiler identification is MSVC 19.28.29915.0
1> [CMake] -- Detecting C compiler ABI info
1> [CMake] -- Detecting C compiler ABI info - done
1> [CMake] -- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Professional/VC/Tools/MSVC/14.28.29910/bin/Hostx64/x64/cl.exe - skipped
1> [CMake] -- Detecting C compile features
1> [CMake] -- Detecting C compile features - done
1> [CMake] -- Detecting CXX compiler ABI info
1> [CMake] -- Detecting CXX compiler ABI info - done
1> [CMake] -- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Professional/VC/Tools/MSVC/14.28.29910/bin/Hostx64/x64/cl.exe - skipped
1> [CMake] -- Detecting CXX compile features
1> [CMake] -- Detecting CXX compile features - done
1> [CMake] -- Looking for MFC
1> [CMake] -- Looking for MFC - not found
1> [CMake] -- MFC_FOUND: NO
1> [CMake] -- Configuring done
1> [CMake] -- Generating done
1> [CMake] -- Build files have been written to: C:/Users/benjamin.buch/source/repos/mfc_ninja/out/build/x64-Debug
1> Extracted CMake variables.
1> Extracted source files and headers.
1> Extracted code model.
1> Extracted includes paths.
1> CMake generation finished.

让我有点困惑的是，尽管

REQUIRED

这不会因错误消息而中止。

Answer 1

看起来 Visual Studio 解决方案正在使用某种嵌入式 MFC。要将 MFC 与 CMake 一起使用，必须通过 Visual Studio 安装程序进行安装。

不幸的是，我只有安装程序的德语截图：

因为

REQUIRED

不能与

FindMFC

一起使用，所以必须明确检查。

cmake_minimum_required(VERSION 3.19)

project(mylib)

find_package(MFC)
if(NOT MFC_FOUND)
    message(FATAL_ERROR "MFC was not found, please install ASP.NET/MFC for newest build tools")
endif()

add_library(${PROJECT_NAME} SHARED source.cpp)