CMakeLists.txt

#------------------------------------------------------------------------------
# CMakeLists.txt
#------------------------------------------------------------------------------
cmake_minimum_required(VERSION 3.1)

project(ZeldaOOL)

set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

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

if (APPLE)
	add_definitions(-DGL_SILENCE_DEPRECATION=1)
endif()

set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})

#------------------------------------------------------------------------------
# Packages
#------------------------------------------------------------------------------
# - OpenGL
#------------------------------------------------------------------------------
set(OpenGL_GL_PREFERENCE "LEGACY")

find_package(OpenGL REQUIRED)

if(NOT OPENGL_FOUND)
	message(FATAL_ERROR "OpenGL not found!")
endif()

#------------------------------------------------------------------------------
# Submodules
# from https://cliutils.gitlab.io/modern-cmake/chapters/projects/submodule.html
#------------------------------------------------------------------------------
find_package(Git QUIET)

if(GIT_FOUND AND EXISTS "${PROJECT_SOURCE_DIR}/.git")
	option(GIT_SUBMODULE "Check submodules during build" ON)
	if(GIT_SUBMODULE)
		message(STATUS "Submodule update")
		execute_process(COMMAND ${GIT_EXECUTABLE} submodule sync --recursive WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
		execute_process(COMMAND ${GIT_EXECUTABLE} submodule update --init --recursive
			WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
			RESULT_VARIABLE GIT_SUBMOD_RESULT)
		if(NOT GIT_SUBMOD_RESULT EQUAL "0")
			message(FATAL_ERROR "git submodule update --init failed with ${GIT_SUBMOD_RESULT}, please checkout submodules")
		endif()
	endif()
endif()

if(NOT EXISTS "${PROJECT_SOURCE_DIR}/external/gamekit/CMakeLists.txt")
    message(FATAL_ERROR "The submodules were not downloaded! GIT_SUBMODULE was turned off or failed. Please update submodules and try again.")
endif()

set(BUILD_SHARED_LIBS OFF)

#------------------------------------------------------------------------------
# - gamekit
#------------------------------------------------------------------------------
add_subdirectory(external/gamekit)
include_directories(external/gamekit/include)

#------------------------------------------------------------------------------
# Get source files
#------------------------------------------------------------------------------
file(GLOB_RECURSE SOURCE_FILES source/*.cpp)
file(GLOB_RECURSE HEADER_FILES source/*.hpp)

foreach(HEADER_FILE ${HEADER_FILES})
	get_filename_component(HEADER_DIRECTORY ${HEADER_FILE} DIRECTORY)
	include_directories(${HEADER_DIRECTORY})
endforeach(HEADER_FILE)

#------------------------------------------------------------------------------
# Add executables
#------------------------------------------------------------------------------
add_executable(${CMAKE_PROJECT_NAME} ${SOURCE_FILES})
add_dependencies(${CMAKE_PROJECT_NAME} gamekit)

#------------------------------------------------------------------------------
# Compiler flags
#------------------------------------------------------------------------------
# target_compile_options(${CMAKE_PROJECT_NAME} PRIVATE -O3 -ffast-math)
target_compile_options(${CMAKE_PROJECT_NAME} PRIVATE -g -Wall -Wextra -Wfatal-errors -Wno-variadic-macros)
target_compile_options(${CMAKE_PROJECT_NAME} PRIVATE -DDEBUG_ENABLED)

# set(CMAKE_CXX_STANDARD 14)
target_compile_features(${CMAKE_PROJECT_NAME} PRIVATE cxx_std_14)

#------------------------------------------------------------------------------
# Link options
#------------------------------------------------------------------------------
# if (UNIX)
# 	set (UNIX_LIBS -ldl -lpthread)
# endif ()

target_link_libraries(${CMAKE_PROJECT_NAME} PRIVATE
	gamekit
	# ${OPENGL_LIBRARIES}
	# ${UNIX_LIBS}
)