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我正在尝试使用 GLFW 编写 OpenGL 应用程序。文件结构如下

-USG
 -build
 -include
   -glfw-3.3
 -src
   -CMakeLists.txt
   -main.cpp
 -CMakeLists.txt

USG文件中的CMake如下。

cmake_minimum_required(VERSION 3.0)
project(USG)

#--------------------------------------------------------------------
# Set GLFW variables
#--------------------------------------------------------------------
set(GLFW_BUILD_DOCS OFF CACHE BOOL "" FORCE)
set(GLFW_BUILD_TESTS OFF CACHE BOOL "" FORCE)
set(GLFW_BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)

#--------------------------------------------------------------------
# Add subdirectories
#--------------------------------------------------------------------
add_subdirectory(include/glfw-3.3)
add_subdirectory(src)

而src文件中的CMakeLists如下

add_executable(usg main.cpp)

set(OpenGL_GL_PREFERENCE GLVND)
find_package(OpenGL REQUIRED)

if (OPENGL_FOUND)
    target_include_directories(usg PUBLIC ${OPENGL_INCLUDE_DIR})
    target_link_libraries(usg ${OPENGL_gl_LIBRARY})
endif()

target_link_libraries(usg glfw)

我在 build 文件夹中运行，cmake ../然后运行make。运行 cmake 会按预期运行。运行 make 构建 …