cmake_minimum_required( VERSION 3.10.0 )
project( opengl-proj )

file(TO_NATIVE_PATH "${CMAKE_BINARY_DIR}/shader" DST_DIR)
file(TO_NATIVE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/shader" SRC_DIR)
if(MSVC)
    execute_process(COMMAND ${CMAKE_COMMAND} -E remove_directory ${DST_DIR})
    execute_process(COMMAND cmd /C mklink /J ${DST_DIR} ${SRC_DIR})
elseif()
    execute_process(COMMAND ${CMAKE_COMMAND} -E remove_directory ${DST_DIR})
    execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink ${SRC_DIR} ${DST_DIR})
endif()

# external glfw
set( GLFW_BUILD_DOCS OFF CACHE INTERNAL "" )
set( GLFW_BUILD_TESTS OFF CACHE INTERNAL "" )
set( GLFW_BUILD_EXAMPLES OFF CACHE INTERNAL "" )
add_subdirectory( external/glfw )
add_subdirectory( external/glew )

# external includes
include_directories( external/glm )
include_directories( external/glad/include )
include_directories( external/glew/include )

# application code
include_directories( "include" )
add_executable(
    opengl-proj
    "src/main.cpp"
    "external/glad/src/glad.c" )
target_compile_features(
    opengl-proj
    PUBLIC cxx_std_11 )
target_link_libraries(
    opengl-proj
    PRIVATE glfw
    PRIVATE libglew_static )