使用CMAKE构建GLFW3应用程序-未设置GLFW_库

我正在尝试使用glfw3构建一个小项目，但无论我做什么，我都无法让pkgconfig设置GLFW_库

这是我的CMakeList.txt

cmake_minimum_required(VERSION 3.3)
project(LearnGLSL)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")

if (CMAKE_BUILD_TYPE STREQUAL "")
    set(CMAKE_BUILD_TYPE Debug)
endif()


if(CMAKE_BUILD_TYPE STREQUAL "Debug")
    set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/build/debug")
    set(PROJECT_BINARY_DIR "${CMAKE_SOURCE_DIR}/build/debug")
endif(CMAKE_BUILD_TYPE STREQUAL "Debug")


file(MAKE_DIRECTORY ${PROJECT_BINARY_DIR})
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR})


find_package(OpenGL REQUIRED)

find_package(PkgConfig REQUIRED)
pkg_check_modules(GLFW REQUIRED glfw3)



include_directories(
        ${OPENGL_INCLUDE_DIR}
        ${GLFW_INCLUDE_DIRS}
)


set(SOURCE_FILES main.cpp gl_core_4_3.cpp)

message(WARNING "${GLFW_LIBRARIES}")

add_executable(LearnGLSL ${SOURCE_FILES})
target_link_libraries(LearnGLSL ${OPENGL_gl_LIBRARY} ${GLFW_LIBRARIES})


add_custom_command(TARGET LearnGLSL  POST_BUILD
        COMMAND ${CMAKE_COMMAND} -E copy_directory
        ${CMAKE_SOURCE_DIR}/assets
        ${PROJECT_BINARY_DIR}
        COMMENT "Copy resources to build tree")

此处是glfw3的安装位置

-- Installing: /usr/local/include/GLFW
-- Installing: /usr/local/include/GLFW/glfw3native.h
-- Installing: /usr/local/include/GLFW/glfw3.h
-- Installing: /usr/local/lib/cmake/glfw/glfw3Config.cmake
-- Installing: /usr/local/lib/cmake/glfw/glfw3ConfigVersion.cmake
-- Installing: /usr/local/lib/cmake/glfw/glfwTargets.cmake
-- Installing: /usr/local/lib/cmake/glfw/glfwTargets-noconfig.cmake
-- Installing: /usr/local/lib/pkgconfig/glfw3.pc
-- Installing: /usr/local/lib/libglfw3.a

我会第一个承认我对CMAKE不太满意，但这似乎很简单，我已经尽了我所能在谷歌上找到了。也许是我没注意到的打字错误。谢谢你的帮助

哦，我忘了提到我在构建这个项目时得到了对glfw函数的未定义引用。我认为这是GLFW_库未正确设置的结果。

，因为CMake 3.1使用

CMake_PREFIX_PATH

变量的附加路径来搜索

.pc

文件。搜索的执行方式与命令中的类似，但会将附加子目录

pkgconfig/

添加到结果路径中。具体而言，对于

CMAKE_PREFIX_PATH

中的每个

，将在下一个目录中搜索

.pc

文件：

<prefix>/lib[64]/[<arch>/]pkgconfig

3） 作为环境一（依赖于操作系统）

---

在CMake 3.1之前（以及之后），可以通过

PKG\u CONFIG\u PATH

环境变量指定额外的搜索目录

---

例如，使用文件

/usr/local/lib/pkgconfig/glfw3.pc

变量

PKG_-CONFIG_路径

应包含

/usr/local/lib/pkgconfig

我不知道如何使用pkgconfig查找GLFW，但我认为在这种情况下不需要pkgconfig。由于GLFW本身是使用CMake构建的，所以它应该安装一个本机CMake配置模块，它确实安装了这个模块

嗯，差不多了。从v3.1.2开始，官方的GLFW CMake配置模块支持有点缺陷。相反，使用或（基于shaxbee但更新的）

使用该GLFW，您只需找到2行即可：

find_package(glfw3 REQUIRED)
...
target_link_libraries(LearnGLSL ... glfw)

我还在您的CMakeLists.txt中发现了一些其他问题，因此我重复了整个脚本，修改如下：

cmake_minimum_required(VERSION 3.3)
project(LearnGLSL)

set(CMAKE_CXX_STANDARD 11) # no explicit compiler flags if possible

# don't read CMAKE_BUILD_TYPE, it has no meaning with multiconfig
# generators
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG "${CMAKE_SOURCE_DIR}/build/debug")

# PROJECT_BINARY_DIR should not be set at all
# You establish the BINARY_DIR with the initial cmake command
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR})

find_package(OpenGL REQUIRED)
find_package(glfw3 REQUIRED)

include_directories(${OPENGL_INCLUDE_DIR})

add_executable(LearnGLSL main.cpp gl_core_4_3.cpp)
target_link_libraries(LearnGLSL ${OPENGL_gl_LIBRARY} glfw)

add_custom_command(TARGET LearnGLSL POST_BUILD
    COMMAND ${CMAKE_COMMAND} -E copy_directory
    ${CMAKE_SOURCE_DIR}/assets
    ${PROJECT_BINARY_DIR}
    COMMENT "Copy resources to build tree")

---

对于目标链接库，可以使用${GLFW3_LIBRARY}而不是glfw。

cmake_minimum_required(VERSION 3.3)
project(LearnGLSL)

set(CMAKE_CXX_STANDARD 11) # no explicit compiler flags if possible

# don't read CMAKE_BUILD_TYPE, it has no meaning with multiconfig
# generators
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG "${CMAKE_SOURCE_DIR}/build/debug")

# PROJECT_BINARY_DIR should not be set at all
# You establish the BINARY_DIR with the initial cmake command
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR})

find_package(OpenGL REQUIRED)
find_package(glfw3 REQUIRED)

include_directories(${OPENGL_INCLUDE_DIR})

add_executable(LearnGLSL main.cpp gl_core_4_3.cpp)
target_link_libraries(LearnGLSL ${OPENGL_gl_LIBRARY} glfw)

add_custom_command(TARGET LearnGLSL POST_BUILD
    COMMAND ${CMAKE_COMMAND} -E copy_directory
    ${CMAKE_SOURCE_DIR}/assets
    ${PROJECT_BINARY_DIR}
    COMMENT "Copy resources to build tree")