使用 CMake 找不到包 GLFW

Question

我的项目结构如下所示：

• CMakeLists.txt
• 部门
  • 格卢
  • GLFW
• 包括
• 源代码
  • ...
  • 图形
    • ...
    • CMakeLists.txt

两个值得关注的 CMakeLists.txt 文件：

CMakeLists.txt

cmake_minimum_required(VERSION 3.9)
project(noam_engine)

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

set(CMAKE_CXX_STANDARD 11)
set(NE_LIBRARIES common math graphics)

FOREACH(lib ${NE_LIBRARIES})
    add_subdirectory(src/${lib})
ENDFOREACH(lib)

add_executable(noam_engine src/main.cpp)

if(OPENGL_FOUND AND GLEW_FOUND)
    target_include_directories(noam_engine PUBLIC include ${OPENGL_INCLUDE_DIR} ${GLEW_INCLUDE_DIRS})
    target_link_libraries(noam_engine ${NE_LIBRARIES})
endif()

src/graphics/CMakeLists.txt

cmake_minimum_required(VERSION 3.9)

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

file(GLOB SRC "*.cpp")
add_library(graphics ${SRC})

if(OPENGL_FOUND AND GLEW_FOUND)
    target_include_directories(graphics PUBLIC ${PROJECT_SOURCE_DIR}/include ${OPENGL_INCLUDE_DIR} ${GLEW_INCLUDE_DIRS})
    target_link_libraries(graphics ${OPENGL_gl_LIBRARY} ${GLFW3_LIBRARY} ${GLEW_LIBRARIES})
    message(STATUS "GLFW and GLEW successfully linked")
    message(STATUS ${OPENGL_gl_LIBRARY})
    message(STATUS ${GLFW3_LIBRARY})
    message(STATUS ${GLEW_LIBRARIES})
else()
    message(STATUS "Cannot find GL libraries")
endif()

简而言之，我想创建一堆引擎的静态库，特别是graphics带有 GL 的链接库，最后将它们全部链接到根 CMakeLists.txt 中的可执行文件。

但我注意到${GLFW3_LIBRARY}为空，并且出现链接器错误，例如，当我调用glfwInit()时。我在 GLFW 的构建和安装过程中遵循了指南

cmake .
make
make install

我相信标头和库位于 /usr/local/* 中，但显然 CMake 找不到它们，或者可能我做错了什么。

我唯一的假设是 find_package 不知道位于 deps/glfw/* 中的 glfw3Config.cmake

Answer 1

我从https://github.com/JoeyDeVries/LearnOpenGL/blob/master/cmake/modules/FindGLFW3.cmake获取脚本并将其放入 cmake 文件夹中。然后在 CMakeLists.txt 中我添加

list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake")

现在一切正常

谢谢@Tsyvarev