########################################################
# Use the mkmf.rb file that I provide, so I can use the
# have_enum_member method
########################################################
require "mkmf"
require "ftools"

File.copy("lib/proc/wait3.c",".")

# Check to see if Ruby has already defined the various RLIMIT constants
# and set an appropriate macro in the source.
begin
   Process::RLIMIT_AS
rescue
   check_sizeof("int")
   check_sizeof("long")
   check_sizeof("long long")
   unless check_sizeof("rlim_t", "sys/resource.h")
      if (2**33).is_a?(Fixnum)
         $defs.push("-DSIZEOF_RLIM_T 8") # 64 bit
      else
         $defs.push("-DSIZEOF_RLIM_T 4") # 32 bit
      end
   end
else
   $defs.push("-DRUBY_HAS_RLIMIT") # Used within wait.c
end

have_header("wait.h")

# wait3 is mandatory.
unless have_func("wait3")
   STDERR.puts "wait3() function not found"
   exit
end

# wait4 and waitid are optional (HPUX, et al)
have_func("wait4")
have_func("waitid")
have_func("sigsend")
have_func("getrusage")

have_struct_member("struct siginfo", "si_trapno", "signal.h")
have_struct_member("struct siginfo", "si_pc", "signal.h")
have_struct_member("struct siginfo", "si_sysarg", "signal.h")
have_struct_member("struct siginfo", "si_mstate", "signal.h")
have_struct_member("struct siginfo", "si_faddr", "signal.h")
have_struct_member("struct siginfo", "si_syscall", "signal.h")
have_struct_member("struct siginfo", "si_nsysarg", "signal.h")
have_struct_member("struct siginfo", "si_fault", "signal.h")
have_struct_member("struct siginfo", "si_tstamp", "signal.h")

begin
   have_const("P_CID", "signal.h")
   have_const("P_GID", "signal.h")
   have_const("P_MYID", "signal.h")
   have_const("P_SID", "signal.h")
   have_const("P_UID", "signal.h")

   # These are only supported by Solaris 8 and later afaik
   have_const("P_PROJID", "signal.h")
   have_const("P_TASKID", "signal.h")
rescue NoMethodError
   STDERR.puts
   STDERR.puts "STOP!"
   STDERR.puts
   STDERR.puts "Please run the patch.rb program and try again"
   STDERR.puts "See the README file for more details"
   STDERR.puts "Makefile NOT created"
   exit
end

create_makefile("proc/wait3")