cmake_minimum_required(
	VERSION
	3.20
)
project(
	dux
	VERSION
	29
	DESCRIPTION
	"General purpose library."
	HOMEPAGE_URL
	"https://mandelbrot.dk/delta/dux"
	LANGUAGES
	CXX
)
set(
	CMAKE_CXX_STANDARD
	23
)

# Options:
option(
	DUX_ENABLE_DEMO
	"Build the demo program."
)
option(
	DUX_ENABLE_SYS
	"Enable the system extensions."
)
option(
	DUX_GFXPROTO
	"Set the graphics protocol: \"windx\" (WinAPI/DirectX), \"wlgl\" (Wayland/OpenGL), \"wlvk\" (Wayland/Vulkan), \"xgl\" (X/OpenGL), \"xvk\" (X/Vulkan)"
)
option(
	DUX_SFXPROTO
	"Set the sound protocol: \"dx\" (DirectX), \"pa\" (PulseAudio), \"pw\" (PipeWire)"
)

# Disable in-souce builds:
if(
	"${PROJECT_BINARY_DIR}"
	STREQUAL
	"${PROJECT_SOURCE_DIR}"
)
   message(
	   FATAL_ERROR
	   "In-source building is not allowed."
	)
endif()

# Compiler Settings:
message(
	STATUS
	"Enabling colour output for Clang or GCC..."
)
if(
	"${CMAKE_CXX_COMPILER_ID}"
	STREQUAL
	"Clang"
)
	add_compile_options(
		"-fcolor-diagnostics"
	)
elseif(
	"${CMAKE_CXX_COMPILER_ID}"
	STREQUAL
	"GNU"
)
	add_compile_options (
		"-fdiagnostics-color=always"
	)
endif()
message(
	STATUS
	"Enabling compile warnings..."
)
if(
	MSVC
)
	add_compile_options(
		"/W4"
		"/WX"
	)
else()
	add_compile_options(
		"-pedantic-errors"
		"-Wfatal-errors"
		"-Wall"
		"-Wconversion"
		"-Werror"
		"-Wextra"
		"-Wunreachable-code"
		"-Wunused"
	)
	if(
		"${CMAKE_CXX_COMPILER_ID}"
		STREQUAL
		"Clang"
	)
		add_compile_options(
			"-Wnewline-eof"
		)
	endif()
endif()
if(
	CMAKE_BUILD_TYPE
	MATCHES
	Release
)
	message(
		STATUS
		"Setting optimisation level..."
	)
	if(
		MSVC
	)
		add_compile_options(
			"/Os"
		)
	else()
		add_compile_options(
			"-Os"
		)
	endif()
endif()

# Include directories:
include_directories(
	"${PROJECT_SOURCE_DIR}/include"
)

# dux settings:
add_library(
	dux
	SHARED
	"src/dux/_setsiginthandl.cc"
	"src/dux/_siginthandl.cc"
	"src/dux/_sigtocsig.cc"
	"src/dux/abrt.cc"
	"src/dux/endgfx.cc"
	"src/dux/exit.cc"
	"src/dux/getenv.cc"
	"src/dux/goatmaster.cc"
	"src/dux/initgfx.cc"
	"src/dux/qexit.cc"
	"src/dux/raise.cc"
	"src/dux/sighandl.cc"
	"src/dux/sleep.cc"
	"src/dux/trap.cc"
	"src/dux/unreach.cc"
	"src/dux/win.cc"
)
if(
	UNIX
)
	set_property(
		TARGET
		dux
		APPEND
		PROPERTY
		SOURCES
		"src/dux/_freepthrdhandl.cc"
		"src/dux/_getpthrdhandl.cc"
		"src/dux/_pthrdcrt.cc"
		"src/dux/_pthrdjoin.cc"
	)
endif()
target_compile_definitions(
	dux
	PRIVATE
	_XOPEN_SOURCE=700
)
if(
	DUX_GFXPROTO
	STREQUAL
	"wlgl"
)
	message(
		STATUS
		"Using Wayland/OpenGL for graphics."
	)
	target_compile_definitions(
		dux
		PRIVATE
		dux_gfxproto_wlgl
	)
elseif(
	DUX_GFXPROTO
	STREQUAL
	"wlvk"
)
	message(
		STATUS
		"Using Wayland/Vulkan for graphics."
	)
	target_compile_definitions(
		dux
		PRIVATE
		dux_gfxproto_wlvk
	)
elseif(
	DUX_GFXPROTO
	STREQUAL
	"xgl"
)
	message(
		STATUS
		"Using X/OpenGL for graphics."
	)
	target_compile_definitions(
		dux
		PRIVATE
		dux_gfxproto_xgl
	)
elseif(
	DUX_GFXPROTO
	STREQUAL
	"xvk"
)
	message(
		STATUS
		"Using X/Vulkan for graphics."
	)
	target_compile_definitions(
		dux
		PRIVATE
		dux_gfxproto_xvk
	)
else()
	message(
		FATAL_ERROR
		"Graphics system undefined (or invalid)! Set option \"DUX_GFXPROTO\" to: \"wlgl\" (Wayland/OpenGL), \"wlvk\" (Wayland/Vulkan), \"xgl\" (X/OpenGL), or \"xvk\" (X/Vulkan)!"
	)
endif()
if(
	DUX_GFXPROTO
	STREQUAL
	"wlgl"
	OR
	DUX_GFXPROTO
	STREQUAL
	"wlvk"
)
	target_link_libraries(
		dux
		wayland-client
	)
elseif(
	DUX_GFXPROTO
	STREQUAL
	"xgl"
	OR
	DUX_GFXPROTO
	STREQUAL
	"xvk"
)
	target_link_libraries(
		dux
		xcb
	)
	if(
		DUX_GFXPROTO
		STREQUAL
		"xgl"
	)
		target_link_libraries(
			dux
			X11-xcb
		)
	endif()
endif()
if(
	NOT
	WIN32
)
	target_link_libraries(
		dux
		dl
		pthread
	)
endif()

# Demo settings:
if(
	DUX_ENABLE_DEMO
)
	add_executable(
		demo
		"dux-demo/main.cc"
	)
	add_dependencies(
		demo
		dux
	)
	target_link_libraries(
		demo
		dux
	)
endif()