CMakeLists.txt

cmake_minimum_required (VERSION 3.9)
project (gl_playground)

set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})

include_directories(include)
include_directories(lib/include)

include(cmake/eigen.cmake.in)
include(cmake/glfw.cmake.in)
include(cmake/spdlog.cmake.in)
include(cmake/imgui.cmake.in)
include(cmake/entt.cmake.in)
include(cmake/libspng.cmake.in)
include(cmake/cxxopts.cmake.in)

set(OpenGL_GL_PREFERENCE GLVND)
find_package(OpenGL REQUIRED)
include_directories(${OPENGL_INCLUDE_DIR})

file(GLOB_RECURSE SOURCES src/*.cpp src/*.c lib/src/*.cpp lib/src/*.c)

add_executable(app ${SOURCES})

message(STATUS "Compiler: ${CMAKE_CXX_COMPILER_ID}")

target_compile_features(app PRIVATE cxx_std_20)

if(WIN32)
    message(STATUS "Windows detected, adding compile flags")
    target_compile_definitions(app PUBLIC
        PLATFORM_WINDOWS
        _USE_MATH_DEFINES
        NOMINMAX
    )
endif()

if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
    message(STATUS "Clang detected, adding compile flags")
    target_compile_options(app PRIVATE -Wall -Wno-c++98-compat -Wno-reserved-id-macro)
    target_compile_features(app PRIVATE cxx_std_17)
elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
    message(STATUS "GCC detected, adding compile flags")
    target_compile_options(app PRIVATE -Wall)
    target_compile_features(app PRIVATE cxx_std_17)
elseif (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
    message(STATUS "msvc detected, adding compile flags")
    target_compile_options(app PRIVATE  /std:c++20 /EHsc)
else()
    message(STATUS "Could not determine compiler: ${CMAKE_CXX_COMPILER_ID}" )
    target_compile_features(app PRIVATE cxx_std_17)
    target_compile_options(app PRIVATE -Wall)
endif()

if (CMAKE_BUILD_TYPE STREQUAL "Debug")
    message(STATUS "Debug build: adding compile flags")
    target_compile_definitions(app PRIVATE BUILD_DEBUG)
elseif (CMAKE_BUILD_TYPE STREQUAL "Release")
    message(STATUS "Release build: adding compile flags")
    target_compile_definitions(app PRIVATE BUILD_RELEASE)
endif()


target_link_libraries(app glfw ${OPENGL_LIBRARIES} spdlog imgui EnTT spng cxxopts)