CMake 和 Conan：致命错误 - 没有这样的文件或目录

Question

我在构建 C++ 项目时遇到问题，需要一些帮助来解决它。我已经建立了一个使用 Conan 管理依赖项的项目，并且创建了一个 CMakeLists.txt 文件来链接这些库。但是，当我尝试使用 cmake 命令构建项目时，遇到以下错误：

C:/Users/veltr/Desktop/Exercises/OpenGLProject/Application.cpp:1:10: fatal error: GLEW/glew.h: No such file or directory
    1 | #include <GLEW/glew.h>
      |          ^~~~~~~~~~~~~
compilation terminated.
make[2]: *** [CMakeFiles/OpenGLProject.dir/Application.cpp.obj] Błąd 1
make[1]: *** [CMakeFiles/OpenGLProject.dir/all] Błąd 2

我有一个 conan.txt 文件，在其中指定要使用 conan install 安装的依赖项。我创建了一个 CMakeLists.txt 文件来链接所需的库。该项目似乎构建没有错误，但当我尝试编译测试代码来检查功能时，我遇到了提到的致命错误。

conanfile.txt

[requires]
opengl/system
glfw/3.3.8
glew/2.2.0
[generators]
CMakeDeps
CMakeToolchain
[layout]
cmake_layout

CMakeLists.txt

cmake_minimum_required(VERSION 3.27)
project(OpenGLProject)

find_package(glfw3 REQUIRED)
find_package(OpenGL REQUIRED)
find_package(GLEW REQUIRED)

add_executable(${PROJECT_NAME} Application.cpp)

target_link_libraries(${PROJECT_NAME} glfw)
target_link_libraries(${PROJECT_NAME} GLEW::glew_s)
target_link_libraries(${PROJECT_NAME} OpenGL::GL)

应用程序.cpp

#include <GLEW/glew.h>
#include <GLFW/glfw3.h>

int main(void)
{
    GLFWwindow* window;

    /* Initialize the library */
    if (!glfwInit())
        return -1;

    /* Create a windowed mode window and its OpenGL context */
    window = glfwCreateWindow(640, 480, "Hello World", NULL, NULL);
    if (!window)
    {
        glfwTerminate();
        return -1;
    }

    /* Make the window's context current */
    glfwMakeContextCurrent(window);

    /* Loop until the user closes the window */
    while (!glfwWindowShouldClose(window))
    {
        /* Render here */
        glClear(GL_COLOR_BUFFER_BIT);

        glBegin(GL_TRIANGLES);
        glVertex2f(-0.5f,-0.5f);
        glVertex2f(0.0f,  0.5f);
        glVertex2f(0.5f, -0.5f);
        glEnd();

        /* Swap front and back buffers */
        glfwSwapBuffers(window);

        /* Poll for and process events */
        glfwPollEvents();
    }

    glfwTerminate();
    return 0;
}

例如，“fmt”库 - 通过遵循类似的步骤 - 可以正确构建和工作，并且我可以使用其中所有可用的 #include 指令。上述所有库都可以在 conan.io 上找到，因此它们应该是正确的。我做错了什么或不正确吗？

//编辑经过多次尝试解决问题，我找不到解决方案，最终使问题变得更糟。为了回到之前的状态，我必须添加通过 Conan 下载的包的绝对路径，以及我从网站下载的 GLEW 库。这是我更新的 CMakeLists.txt：

cmake_minimum_required(VERSION 3.27)
project(OpenGLProject)

# Set the paths to GLFW and OpenGL package configuration files
set(glfw3_DIR "C:/Users/veltr/Desktop/Exercises/OpenGLProject/build/Release/generators")
set(opengl_system_DIR "C:/Users/veltr/Desktop/Exercises/OpenGLProject/build/Release/generators")

# Find and link GLFW
find_package(glfw3 REQUIRED)

# Set the path to GLEW package configuration files 
set(GLEW_ROOT "C:/Users/veltr/Downloads/glew-2.1.0-win32/glew-2.1.0")
set(GLEW_INCLUDE_DIRS "${GLEW_ROOT}/include")
set(GLEW_LIBRARIES "${GLEW_ROOT}/lib/Release/Win32/glew32s.lib")

# Find and link GLEW
find_package(GLEW REQUIRED)

# Find and link OpenGL
find_package(OpenGL REQUIRED)

add_executable(${PROJECT_NAME} Application.cpp)

# Link the libraries to your project
target_link_libraries(${PROJECT_NAME} glfw)
target_link_libraries(${PROJECT_NAME} GLEW::GLEW)
target_link_libraries(${PROJECT_NAME} OpenGL::GL)

现在，当我构建项目时，我得到以下输出：

cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release ..
-- The C compiler identification is GNU 13.2.0
-- The CXX compiler identification is GNU 13.2.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: C:/msys64/mingw64/bin/cc.exe - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: C:/msys64/mingw64/bin/c++.exe - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Conan: Target declared 'glfw'
-- Conan: Target declared 'opengl::opengl'
-- Found GLEW: C:/Users/veltr/Downloads/glew-2.1.0-win32/glew-2.1.0/include (found version "2.1.0") 
-- Found OpenGL: opengl32
-- Configuring done (3.1s)
-- Generating done (0.1s)
-- Build files have been written to: C:/Users/veltr/Desktop/Exercises/OpenGLProject/build

如您所见，链接器找到了 GLEW，但不幸的是，当我使用 make 编译项目时，我仍然收到相同的错误。

//编辑#2

cmake_minimum_required(VERSION 3.27)
project(OpenGLProject)
set(glfw3_DIR "C:/Users/veltr/Desktop/Exercises/OpenGLProject/build/Release/generators")
set(opengl_system_DIR "C:/Users/veltr/Desktop/Exercises/OpenGLProject/build/Release/generators")

find_package(glfw3 REQUIRED)
find_package(OpenGL REQUIRED)
find_package(GLEW REQUIRED)
include_directories(${GLEW_INCLUDE_DIRS})

add_executable(${PROJECT_NAME} Application.cpp)

target_link_libraries(${PROJECT_NAME} glfw)
target_link_libraries(${PROJECT_NAME} GLEW::glew_s)
target_link_libraries(${PROJECT_NAME} OpenGL::GL)

输出：

(...)
-- Detecting CXX compile features - done
-- Conan: Target declared 'glfw'
-- Conan: Target declared 'opengl::opengl'
-- Found OpenGL: opengl32   
CMake Error at C:/Program Files/CMake/share/cmake-3.27/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
  Could NOT find GLEW (missing: GLEW_INCLUDE_DIRS GLEW_LIBRARIES)
Call Stack (most recent call first):
  C:/Program Files/CMake/share/cmake-3.27/Modules/FindPackageHandleStandardArgs.cmake:600 (_FPHSA_FAILURE_MESSAGE)
  C:/Program Files/CMake/share/cmake-3.27/Modules/FindGLEW.cmake:238 (find_package_handle_standard_args)
  CMakeLists.txt:8 (find_package)
(...)

Answer 1

我认为问题在于您没有在 Conan 工作区中正确包含 GLEW 标头。

当您使用 Conan 安装依赖项时，头文件不会自动提供给您的项目。您有几个选项可以解决此问题：

将 GLEW 包含目录添加到您的 CMakeLists.txt：

# After find_package(GLEW ...)
include_directories(${GLEW_INCLUDE_DIRS})

将 GLEW 包含目录添加到您的 C++ 编译器包含路径：

add_executable(${PROJECT_NAME} Application.cpp)

target_include_directories(${PROJECT_NAME} PUBLIC ${GLEW_INCLUDE_DIRS})

target_link_libraries(${PROJECT_NAME} ...)

使用 conan_basic_setup() CMake 宏为您设置所有包含目录：

include(conanbuildinfo.cmake)
conan_basic_setup()

add_executable(${PROJECT_NAME} Application.cpp)

target_link_libraries(${PROJECT_NAME} ...)

CMake 和 Conan：致命错误 - 没有这样的文件或目录

问题描述投票：0回答：1

1个回答

最新问题

CMake 和 Conan：致命错误 - 没有这样的文件或目录

问题描述 投票：0回答：1

1个回答

最新问题

问题描述投票：0回答：1