BillySheet/CMakeLists.txt

cmake_minimum_required(VERSION 3.19 FATAL_ERROR)
project(BillySheet LANGUAGES CXX C)

find_package(OpenGL REQUIRED)

set(PRECOMPILE_HEADERS
	include/gui.hpp
	include/gui_data.hpp
	include/window.hpp
	)

set(SOURCE_HEADERS
	include/imgui/imconfig.h
	include/imgui/imgui.h
	include/imgui/imgui_impl_glfw.h
	include/imgui/imgui_impl_opengl3.h
	include/imgui/imgui_impl_opengl3_loader.h
	include/imgui/imgui_internal.h
	include/imgui/imstb_rectpack.h
	include/imgui/imstb_textedit.h
	include/imgui/imstb_truetype.h
	include/gui.hpp
	include/gui_data.hpp
	include/window.hpp)

set(SOURCE_FILES
	src/imgui/imgui.cpp
	src/imgui/imgui_draw.cpp
	src/imgui/imgui_impl_glfw.cpp
	src/imgui/imgui_impl_opengl3.cpp
	src/imgui/imgui_tables.cpp
	src/imgui/imgui_widgets.cpp
	src/main.cpp
	src/gui.cpp
	src/gui_data.cpp
	src/window.cpp)

set(SOURCES
	${SOURCE_HEADERS}
	${SOURCE_FILES})

find_program(CCACHE_FOUND ccache)
if (CCACHE_FOUND)
	message(STATUS "ccache found !")
	set_property(GLOBAL PROPERTY C_COMPILER_LAUNCHER ccache)
	set_property(GLOBAL PROPERTY C_LINKER_LAUNCHER ccache)
	set_property(GLOBAL PROPERTY CXX_COMPILER_LAUNCHER ccache)
	set_property(GLOBAL PROPERTY CXX_LINKER_LAUNCHER ccache)
else ()
	message(STATUS "ccache not found")
endif ()

option(BUILD_SHARED_LIBS "Build shared libraries" OFF)
option(GLFW_BUILD_EXAMPLES "Build the GLFW example programs" OFF)
option(GLFW_BUILD_TESTS "Build the GLFW test programs" OFF)
option(GLFW_BUILD_DOCS "Build the GLFW documentation" OFF)
option(GLFW_INSTALL "Generate installation target" OFF)
option(GLFW_VULKAN_STATIC "Assume the Vulkan loader is linked with the application" OFF)
add_subdirectory(external/glfw)

option(SPDLOG_ENABLE_PCH "Build static or shared library using precompiled header to speed up compilation time" ON)
option(SPDLOG_BUILD_WARNINGS "Enable compiler warnings" ON)
option(SPDLOG_PREVENT_CHILD_FD "Prevent from child processes to inherit log file descriptors" ON)
option(SPDLOG_NO_THREAD_ID "prevent spdlog from querying the thread id on each log call if thread id is not needed" ON)
option(SPDLOG_NO_TLS "prevent spdlog from using thread local storage" ON)
option(SPDLOG_NO_ATOMIC_LEVELS "prevent spdlog from using of std::atomic log levels (use only if your code never modifies log levels concurrently" ON)
add_subdirectory(external/spdlog)

set(COMPILE_FLAGS
	-pipe
	-march=skylake # change to native or your architecture.
	-mtune=skylake # same as above
	-mrdseed # be careful about this, this is linked to the x86 architecture.
	-mrdrnd # same as above
	-Wall
	-Wextra
	-Wpedantic
	-pedantic
	-ffunction-sections
	-fdata-sections
	-fuse-ld=gold
	-funroll-loops
	-fdevirtualize-at-ltrans
	-fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-free
	)
set(LINKER_OPTIONS
	-Wl,--sort-common,--as-needed,--gc-sections,--strip-all
	-fuse-ld=gold
	-fdevirtualize-at-ltrans
	)

set(LINKER_FLAGS
	jemalloc
	)

add_executable(BillySheet ${SOURCES})

target_include_directories(BillySheet PRIVATE include include/imgui)

set_target_properties(BillySheet spdlog PROPERTIES
					  CXX_STANDARD 17
					  CXX_STANDARD_REQUIRED ON
					  CXX_EXTENSIONS OFF
					  INTERPROCEDURAL_OPTIMIZATION ON
					  # UNITY_BUILD ON
					  )
set_target_properties(glfw PROPERTIES
					  C_STANDARD 11
					  C_STANDARD_REQUIRED ON
					  C_EXTENSIONS OFF
					  INTERPROCEDURAL_OPTIMIZATION ON
					  # UNITY_BUILD ON
					  )

#target_precompile_headers(BillySheet PRIVATE ${PRECOMPILE_HEADERS})
target_compile_definitions(BillySheet PRIVATE
						   $<$<CONFIG:Debug>:_GLIBCXX_DEBUG>
						   $<$<CONFIG:Debug>:SPDLOG_ACTIVE_LEVEL=SPDLOG_LEVEL_DEBUG>
						   $<$<CONFIG:Release>:SPDLOG_ACTIVE_LEVEL=SPDLOG_LEVEL_ERROR>)

target_compile_options(spdlog PRIVATE ${COMPILE_FLAGS})
target_compile_options(glfw PRIVATE ${COMPILE_FLAGS})
target_compile_options(BillySheet PRIVATE ${COMPILE_FLAGS})

target_link_options(spdlog PRIVATE ${LINKER_OPTIONS})
target_link_options(glfw PRIVATE ${LINKER_OPTIONS})
target_link_options(BillySheet PRIVATE ${LINKER_OPTIONS})

target_link_libraries(spdlog PRIVATE ${LINKER_FLAGS})
target_link_libraries(glfw PRIVATE ${LINKER_FLAGS})
target_link_libraries(BillySheet glfw spdlog OpenGL::OpenGL ${LINKER_FLAGS})