c++ - 在 Visual Studio 代码中设置工具链文件和用于 vsc 的 cmake 工具不起作用

Question

我在 Ubuntu 20.04 上使用 Visual Studio 代码和用于 Visual Studio 代码的 cmake 工具。

我正在尝试在项目中使用 opencv。我使用 vcpkg 构建 OpenCV 并安装它：

cmakeList.txt 如下：

cmake_minimum_required(VERSION 3.0.0)
set(CMAKE_TOOLCHAIN_FILE /home/m/vcpkg/scripts/buildsystems/vcpkg.cmake)
project(testcmake VERSION 0.1.0)

include(CTest)
enable_testing()
find_package(OpenCV REQUIRED)

add_executable(testcmake main.cpp)

set(CPACK_PROJECT_NAME ${PROJECT_NAME})
set(CPACK_PROJECT_VERSION ${PROJECT_VERSION})
include(CPack)

我还在setting.json中添加了这一行：

{
    "cmake.configureOnOpen": false,
    "C_Cpp.default.configurationProvider": "ms-vscode.cmake-tools",

    "cmake.configureSettings": {
      "CMAKE_TOOLCHAIN_FILE": "/home/m/vcpkg/scripts/buildsystems/vcpkg.cmake"
    }
  }

但是当我运行 cmake 时，我收到了这个错误：

[main] Building folder: cmakeTest 
[main] Configuring folder: cmakeTest 
[proc] Executing command: /usr/bin/cmake --no-warn-unused-cli -DCMAKE_TOOLCHAIN_FILE:STRING=/home/m/vcpkg/scripts/buildsystems/vcpkg.cmake -DCMAKE_EXPORT_COMPILE_COMMANDS:BOOL=TRUE -DCMAKE_BUILD_TYPE:STRING=Debug -DCMAKE_C_COMPILER:FILEPATH=/bin/gcc-9 -DCMAKE_CXX_COMPILER:FILEPATH=/bin/g++-9 -H/home/m/MyData/sourceCode/cmakeTest -B/home/m/MyData/sourceCode/cmakeTest/build -G "Unix Makefiles"
[cmake] Not searching for unused variables given on the command line.
[cmake] -- Configuring incomplete, errors occurred!
[cmake] See also "/home/m/MyData/sourceCode/cmakeTest/build/CMakeFiles/CMakeOutput.log".
[cmake] CMake Error at CMakeLists.txt:7 (find_package):
[cmake]   By not providing "FindOpenCV.cmake" in CMAKE_MODULE_PATH this project has
[cmake]   asked CMake to find a package configuration file provided by "OpenCV", but
[cmake]   CMake did not find one.
[cmake] 
[cmake]   Could not find a package configuration file provided by "OpenCV" with any
[cmake]   of the following names:
[cmake] 
[cmake]     OpenCVConfig.cmake
[cmake]     opencv-config.cmake
[cmake] 
[cmake]   Add the installation prefix of "OpenCV" to CMAKE_PREFIX_PATH or set
[cmake]   "OpenCV_DIR" to a directory containing one of the above files.  If "OpenCV"
[cmake]   provides a separate development package or SDK, be sure it has been
[cmake]   installed.
[cmake] 
[cmake] 

为什么make使用vcpkg找不到opencv？

编辑 1

我为 x64 编译了 OpenCV：

opencv4:x64-linux                                  4.3.0#1          computer vision library
opencv4[dnn]:x64-linux                                              Enable dnn module
opencv4[jpeg]:x64-linux                                             JPEG support for opencv
opencv4[opengl]:x64-linux                                           opengl support for opencv
opencv4[png]:x64-linux                                              PNG support for opencv
opencv4[tiff]:x64-linux                                             TIFF support for opencv
opencv4[webp]:x64-linux                                             WebP support for opencv
opencv:x64-linux                                   4.3.0            Computer vision library
opencv[dnn]:x64-linux                                               Enable dnn module
opencv[jpeg]:x64-linux                                              JPEG support for opencv
opencv[opengl]:x64-linux                                            opengl support for opencv
opencv[png]:x64-linux                                               PNG support for opencv
opencv[tiff]:x64-linux                                              TIFF support for opencv
opencv[webp]:x64-linux                                              WebP support for opencv

我知道我应该设置 vcpkg 三元组，我怎样才能默认设置它以便所有应用程序都使用它而不是把它放在 cmake 中？

更新 2

我将三元组设置如下，但仍然出现相同的错误：

cmake_minimum_required(VERSION 3.0.0)
set(CMAKE_TOOLCHAIN_FILE /home/m/vcpkg/scripts/buildsystems/vcpkg.cmake)
set(VCPKG_TARGET_TRIPLET x64-linux CACHE STRING "VCPKG Target Triplet to use")
project(testcmake VERSION 0.1.0)

include(CTest)
enable_testing()
find_package(OpenCV REQUIRED)

add_executable(testcmake main.cpp)

set(CPACK_PROJECT_NAME ${PROJECT_NAME})
set(CPACK_PROJECT_VERSION ${PROJECT_VERSION})
include(CPack)

标签： c++visual-studio-codecmakevcpkg