diff -up ./Makefile.PL.orig ./Makefile.PL
--- ./Makefile.PL.orig	2019-11-24 10:26:02.793736366 +0100
+++ ./Makefile.PL	2019-11-24 10:27:49.699547974 +0100
@@ -9,19 +9,6 @@ sub have_inc($) {
 
 my $DEFINE;
 
-unless (-e "libev/ev_iouring.c") {
-   print <<EOF;
-
-***
-*** ERROR: libev is missing or damaged. If you used a CVS check-out of EV,
-*** you also have to check-out the "libev" module from the same CVS
-*** repository into the EV dir (i.e. EV/libev from outside).
-***
-
-EOF
-   exit 1;
-}
-
 print <<EOF;
 
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