--- Coro/Makefile.PL	2007/10/29 19:13:39	1.33
+++ Coro/Makefile.PL	2007/11/25 09:49:30	1.37
@@ -1,5 +1,18 @@
 use ExtUtils::MakeMaker;
 
+unless (-e "Coro/libcoro/coro.c") {
+   print <<EOF;
+
+***
+*** ERROR: Coro/libcoro is missing or damaged. If you used a CVS check-out
+*** of Coro, you also have to check-out the "libcoro" module from the same CVS
+*** repository in the Coro subdirectory (i.e. Coro/Coro/libcoro from outside).
+***
+
+EOF
+   exit 1;
+}
+
 print "*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***\n\n";
 
 if ($] < 5.006) {
@@ -58,7 +71,7 @@
     DIR          => ['Coro', ($EVENT ? 'Event' : ()), ($EV ? "EV" : ())],
     PREREQ_PM    => {
        Scalar::Util	=> 0.00,
-       AnyEvent         => 2.51,
+       AnyEvent         => 2.6,
        Storable		=> 2.15,
        Time::HiRes      => 0,
 
@@ -66,11 +79,16 @@
        Event		=> 1.06,
 
        # for Coro::EV
-       EV               => 0.03,
+       EV               => 1.3,
 
        # for Coro::AIO
        IO::AIO          => 2.3,
     },
+    EXTRA_META => q{
+configure_requires:
+  Event: 1.06
+  EV: 1.3
+    },
     PM           => {
     		    'Coro.pm'		=> '$(INST_LIBDIR)/Coro.pm',