cmake_minimum_required(VERSION 3.7)
project(opengl)
set(CMAKE_CXX_STANDARD 11)
set(SOURCE_FILES main.cpp)
add_executable(opengl ${SOURCE_FILES})
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/bin")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14 -pthread -fpermissive")
find_package (PkgConfig REQUIRED)
find_package (GLUT REQUIRED)
find_package(glfw3 3.2 REQUIRED)
find_package(OpenGL REQUIRED)
include_directories(${OPENGL_INCLUDE_DIR}  ${GLUT_INCLUDE_DIRS} ${GLFW_LIBRARIES})
file(GLOB SOURCE_FILES
        *.cpp
        *.h
        )
add_executable(main.cpp ${SOURCE_FILES})
target_link_libraries (main.cpp ${OPENGL_LIBRARIES} ${GLUT_LIBRARIES} ${GLFW_LIBRARIES} GL m dl Xinerama Xrandr Xi Xcursor X11 Xxf86vm pthread)

CMakeFiles/opengl.dir/main.cpp.o: In function `main':
/home/efi/w/opengl/main.cpp:7: undefined reference to `glfwInit'
/home/efi/w/opengl/main.cpp:18: undefined reference to `glfwCreateWindow'
/home/efi/w/opengl/main.cpp:21: undefined reference to `glfwTerminate'
/home/efi/w/opengl/main.cpp:24: undefined reference to `glfwMakeContextCurrent'
/home/efi/w/opengl/main.cpp:27: undefined reference to `glewExperimental'
/home/efi/w/opengl/main.cpp:28: undefined reference to `glewInit'
/home/efi/w/opengl/main.cpp:31: undefined reference to `glGetString'
/home/efi/w/opengl/main.cpp:32: undefined reference to `glGetString'
/home/efi/w/opengl/main.cpp:37: undefined reference to `glEnable'
/home/efi/w/opengl/main.cpp:38: undefined reference to `glDepthFunc'
/home/efi/w/opengl/main.cpp:43: undefined reference to `glfwTerminate'
collect2: error: ld returned 1 exit status
CMakeFiles/opengl.dir/build.make:94: recipe for target 'opengl' failed
make[3]: *** [opengl] Error 1
CMakeFiles/Makefile2:104: recipe for target 'CMakeFiles/opengl.dir/all' failed
make[2]: *** [CMakeFiles/opengl.dir/all] Error 2
CMakeFiles/Makefile2:116: recipe for target 'CMakeFiles/opengl.dir/rule' failed
make[1]: *** [CMakeFiles/opengl.dir/rule] Error 2
Makefile:131: recipe for target 'opengl' failed
make: *** [opengl] Error 2

/home/efi/.SOTWARE/clion-2017.1.1/bin/cmake/bin/cmake -DCMAKE_BUILD_TYPE=Debug -G "CodeBlocks - Unix Makefiles" /home/efi/w/opengl
status«GLFWlibs»
-- Configuring done
-- Generating done
-- Build files have been written to: /home/efi/w/opengl/cmake-build-debug

include_directories(/usr/include/GLFW)
target_link_libraries(${PROJECT_NAME} glfw ${GLFW_LIBRARIES})

message(status "GLFW libs ${GLFW_LIBRARIES}")

cmake_minimum_required(VERSION 3.7)
project(opengl)

# С++14 тут не используется, но мало ли, на будующее
set(CMAKE_CXX_STANDARD 14)

set(SOURCE_FILES main.cpp)
add_executable(opengl ${SOURCE_FILES})

find_package(OpenGL REQUIRED)

# по факту, ничего полезного не делает. Судя по всему, определяет, что в системе есть
# библиотека glfw3 и она соответсвует требуемой версии. Переменные _INCLUDE_DIR и
# _LIBRARIES не заполняет. У них на багтрекере по этому поводу куча вопросов, но
# чем все кончилось - не понятно. В target_link_libraries нужно руками добавить glfw
find_package(glfw3 3.2 REQUIRED)

target_include_directories(opengl PRIVATE ${OPENGL_INCLUDE_DIR})
target_link_libraries(opengl ${OPENGL_LIBRARIES} glfw)

#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 */

        GLfloat vertices[] = {
                -0.5f, -0.5f, 0.0f,
                0.5f, -0.5f, 0.0f,
                0.0f,  0.5f, 0.0f
        };
        glDrawArrays(GL_TRIANGLES, 0, 3);
        glClear(GL_COLOR_BUFFER_BIT);

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

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

    glfwTerminate();
    return 0;
}