#!/usr/bin/env ruby
# frozen_string_literal: true

# Released under the MIT License.
# Copyright, 2021-2025, by Samuel Williams.
# Copyright, 2023, by Math Ieu.

return if RUBY_DESCRIPTION =~ /jruby/

require "mkmf"

gem_name = File.basename(__dir__)
extension_name = "IO_Event"

# dir_config(extension_name)

$CFLAGS << " -Wall -Wno-unknown-pragmas -std=c99"

if ENV.key?("RUBY_DEBUG")
	$stderr.puts "Enabling debug mode..."
	
	$CFLAGS << " -DRUBY_DEBUG -O0"
end

$srcs = ["io/event/event.c", "io/event/time.c", "io/event/fiber.c", "io/event/profiler.c", "io/event/selector/selector.c"]
$VPATH << "$(srcdir)/io/event"
$VPATH << "$(srcdir)/io/event/selector"

have_func("rb_ext_ractor_safe")
have_func("&rb_fiber_transfer")

if have_library("uring") and have_header("liburing.h")
	# We might want to consider using this in the future:
	# have_func("io_uring_submit_and_wait_timeout", "liburing.h")
	
	$srcs << "io/event/selector/uring.c"
end

if have_header("sys/epoll.h")
	$srcs << "io/event/selector/epoll.c"
end

if have_header("sys/event.h")
	$srcs << "io/event/selector/kqueue.c"
end

have_header("sys/wait.h")

have_header("sys/eventfd.h")
$srcs << "io/event/interrupt.c"

have_func("rb_io_descriptor")
have_func("&rb_process_status_wait")
have_func("rb_fiber_current")
have_func("&rb_fiber_raise")
have_func("epoll_pwait2")

have_header("ruby/io/buffer.h")

if ENV.key?("RUBY_SANITIZE")
	$stderr.puts "Enabling sanitizers..."
	
	# Add address and undefined behaviour sanitizers:
	$CFLAGS << " -fsanitize=address -fsanitize=undefined -fno-omit-frame-pointer"
	$LDFLAGS << " -fsanitize=address -fsanitize=undefined"
end

create_header

# Generate the makefile to compile the native binary into `lib`:
create_makefile(extension_name)