extconf.rb in proc-wait3-1.5.1 vs extconf.rb in proc-wait3-1.5.2

@@ -5,9 +5,28 @@
 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"