require 'mkmf'

flags = []

# configuration for libev
if have_header('sys/select.h')
  flags << '-DEV_USE_SELECT'
end

if have_header('poll.h')
  flags << '-DEV_USE_POLL'
end

if have_header('sys/epoll.h')
  flags << '-DEV_USE_EPOLL'
end

if have_header('sys/event.h') and have_header('sys/queue.h')
  flags << '-DEV_USE_KQUEUE'
end

if have_header('port.h')
  flags << '-DEV_USE_PORT'
end

if have_header('sys/inotify.h')
  flags << '-DEV_USE_INOTIFY'
end
have_library("c", "main")
have_library("stdc++", "main")
if have_library("rt", "clock_gettime")
  flags << '-DHAVE_LIBRT=1'
end
if !have_library("pthread", "pthread_create")
  STDERR.puts "pthread library required to build evdispatch"
  exit(1)
end
if have_header("curl/curl.h") and
   have_library("curl", "curl_easy_init") and
   have_library("curl", "curl_multi_socket_action")
  flags << '-DHAVE_CURL_CURL_H=1'
  flags << '-DHAVE_CURL_SOCKET_T=1'
else
  STDERR.puts "libcurl 7.18.x > required to build evdispatch"
  exit(1)
end

build_dir= File.dirname(__FILE__)
libdispatch_build_dir=File.expand_path(File.join(build_dir,"libdispatch","src"))
libev_build_dir=File.expand_path(File.join(build_dir,"libdispatch","libev-3.31"))
$LDFLAGS << " -lpthread -lcurl"
$CPPFLAGS << " -DBUILD_EXTENSION -I#{libdispatch_build_dir} -I#{libev_build_dir} " << flags.join(' ')
$defs << "-DRUBY_VERSION_CODE=#{RUBY_VERSION.gsub(/\D/, '')}"

dir_config("revdispatch")
create_makefile("revdispatch")
puts "LDFLAGS: #{$LDFLAGS}\nLIBS: #{$LIBS}\nCPPFLAGS: #{$CPPFLAGS}"