project('decs', 'd', version : '0.5.0')

# Options
betterC_opt = get_option('betterC')
BuildDemos_opt = get_option('BuildDemos')
LTO_otp = get_option('LTO')

summary('betterC enabled', betterC_opt)
summary('build demos', BuildDemos_opt)
summary('LTO enabled', LTO_otp)

meson_minimum_version = '>=0.57.1'
assert(meson.version().version_compare(meson_minimum_version), 'Newer verson of meson required, current version: @0@, required: @1@'.format(meson.version(), meson_minimum_version))

# Files
src = files()
subdir('source')

inc = include_directories('source/')

# Arguments
args = []
link_args = []

comp = meson.get_compiler('d')
comp_id = comp.get_id()

if LTO_otp
	if comp_id == 'gcc'
		args += '-flto'
		link_args += '-flto'
	elif comp_id == 'llvm'
		args += '-flto=thin'
		link_args += '-flto=thin'
	else
		assert(false, 'Compiler "@0@" doesn\'t support LTO'.format(comp_id))
	endif
endif

if betterC_opt
	if comp_id == 'gcc'
		args += ['-fno-druntime']
		link_args += ['-fno-druntime']
	else 
		args += '-betterC'
		link_args += '-betterC'
	endif
endif

add_global_arguments(args, language : 'd')
add_global_link_arguments(link_args, language : 'd')

if host_machine.cpu_family() == 'wasm32'
	add_global_arguments('--output-bc', language : 'd') # Adding it in cross files breaks linker detection
	emcc = find_program('emcc')
	args_wasm = ['-O3', '-s', 'FORCE_FILESYSTEM=1', '-s', 'USE_SDL=2', '-s', 'USE_SDL_IMAGE=2', '-s', 'SDL2_IMAGE_FORMATS=["png"]', '-s', 'ERROR_ON_UNDEFINED_SYMBOLS=0', '-s', 'ALLOW_MEMORY_GROWTH=1', '-s', 'WASM_MEM_MAX=1024MB', '-s', 'MALLOC=dlmalloc', '-s', 'WASM=1', '--shell-file', '../demos/emscripten_multi_shell.html', '-s', 'DISABLE_DEPRECATED_FIND_EVENT_TARGET_BEHAVIOR=1']
endif


# Dependencies
threads_dep = dependency('threads')

ecs_lib = library('decs', src,
	include_directories : [inc],
)

decs_dep = declare_dependency(
	include_directories : [inc],
	link_with : ecs_lib,
	dependencies : threads_dep,	
)

# Tests
subdir('tests')

# Demos
if BuildDemos_opt
	subdir('demos')
endif