设置属性 MSVC_RUNTIME_LIBRARY 不会更改运行时库

Question

我遇到了与这个问题中所述完全相同的问题，但配置不同：

我通过 VCPKG 宣言模式使用 OpenCV，cmake 如下：

cmake_minimum_required(VERSION 3.10)

File(TO_CMAKE_PATH $ENV{VCPKG_ROOT} VCPKG_ROOT)
message(STATUS ${VCPKG_ROOT})
set(CMAKE_TOOLCHAIN_FILE "${VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake" CACHE STRING "")
set(VCPKG_TARGET_TRIPLET "x64-windows-static-ffmpeg" CACHE STRING "")

project(test_project)


find_package(OpenCV REQUIRED)

set(INCLUDE_DIR "src/include")  # Change this if your library directory has a different path
include_directories(${INCLUDE_DIR})

# Set C++ standard to 20
set(CMAKE_CXX_STANDARD 20)

file(GLOB SRC_FILES "src/*.cpp" "src/*.c" )  # You can change "*.cpp" to "*.c" if your project uses C
file(GLOB INCLUDE_FILES  "${INCLUDE_DIR}/*.h" "${INCLUDE_DIR}/*.hpp") 

# Add an executable (replace "main.cpp" with your actual source file)
add_executable(test_program ${SRC_FILES} ${INCLUDE_FILES})
set_target_properties(test_program PROPERTIES
        MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>"
        )
# Include directories for header files
target_link_libraries(test_program ${OpenCV_LIBS})

vcpkg 是：

{
    "version": "1.0.0",
    "dependencies": [
        "opencv[core]"
    ]
}

并且它正在生成此错误：

mismatch detected for 'RuntimeLibrary': value 'MTd_StaticDebug' doesn't match value 'MDd_DynamicDebug' in main.obj  test_program opencv_core4d.lib(matrix.cpp.obj)      

我也测试了这个版本的cmake，但没有成功：

cmake_minimum_required(VERSION 3.10)

File(TO_CMAKE_PATH $ENV{VCPKG_ROOT} VCPKG_ROOT)
message(STATUS ${VCPKG_ROOT})
set(CMAKE_TOOLCHAIN_FILE "${VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake" CACHE STRING "")
set(VCPKG_TARGET_TRIPLET "x64-windows-static-ffmpeg" CACHE STRING "")

project(test_project)


find_package(OpenCV REQUIRED)

set(INCLUDE_DIR "src/include")  # Change this if your library directory has a different path
include_directories(${INCLUDE_DIR})

# Set C++ standard to 20
set(CMAKE_CXX_STANDARD 20)

file(GLOB SRC_FILES "src/*.cpp" "src/*.c" )  # You can change "*.cpp" to "*.c" if your project uses C
file(GLOB INCLUDE_FILES  "${INCLUDE_DIR}/*.h" "${INCLUDE_DIR}/*.hpp") 

# Add an executable (replace "main.cpp" with your actual source file)
add_executable(test_program ${SRC_FILES} ${INCLUDE_FILES})
set_property(TARGET test_program PROPERTY
             MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
# Include directories for header files
target_link_libraries(test_program ${OpenCV_LIBS})

我在每次运行 make 时删除构建目录，以确保没有缓存任何内容，并且项目生成始终从头开始。

我该如何解决这个问题？

Answer 1

属性 MSVC_RUNTIME_LIBRARY 仅出现在 CMake 3.15 中。在以前的 CMake 版本中它被忽略。

您需要更新您的

cmake_minimum_required

命令：

cmake_minimum_required(VERSION 3.15)

---

更准确地说，在您的代码中，由于政策CMP0091，该属性被忽略，当所需的 CMake 版本为 3.14 或更低时，该属性设置为 OLD。

但通常情况下，如果 CMake 版本

V

中引入了某些功能，那么要使用此功能，代码应指定等于

V

或更高版本的最小 CMake 版本。