--- EV-4.17.orig/Makefile.PL	2013-08-01 04:08:54.000000000 +0200
+++ EV-4.17/Makefile.PL	2014-06-23 18:55:22.780438631 +0200
@@ -112,7 +112,7 @@ the default here unless you run into com
 
 EOF
 
-$DEFINE .= " -DEV_USE_POLL=" . (0 + (prompt ("Enable poll backend (y/n)?", (-e "/usr/include/poll.h") ? "y" : "n") =~ /[yY]/));
+$DEFINE .= " -DEV_USE_POLL=" . (0 + (prompt ("Enable poll backend (y/n)?", "n") =~ /[yY]/));
 
 print <<EOF;
 
@@ -131,7 +131,7 @@ EOF
 
 my $can_epoll = -e "/usr/include/sys/epoll.h";
 $can_epoll = $ENV{EV_EPOLL} if exists $ENV{EV_EPOLL};
-$DEFINE .= " -DEV_USE_EPOLL=" . (0 + (prompt ("Enable epoll backend (y/n)?", $can_epoll ? "y" : "n") =~ /[yY]/));
+$DEFINE .= " -DEV_USE_EPOLL=" . (0 + (prompt ("Enable epoll backend (y/n)?", "y") =~ /[yY]/));
 
 print <<EOF;
 
@@ -159,7 +159,7 @@ EOF
 
 my $can_kqueue = -e "/usr/include/sys/event.h";
 $can_kqueue = $ENV{EV_KQUEUE} if exists $ENV{EV_KQUEUE};
-$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/));
+$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", "n") =~ /[yY]/));
 
 print <<EOF;
 
@@ -172,7 +172,7 @@ at runtime, with a safe fallback to othe
 
 EOF
 
-$DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable event port backend (y/n)?", (-e "/usr/include/sys/port.h") ? "y" : "n") =~ /[yY]/));
+$DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable event port backend (y/n)?", "n") =~ /[yY]/));
 
 print <<EOF;
 
@@ -210,7 +210,7 @@ EOF
 
 my $can_inotify = -e "/usr/include/sys/inotify.h";
 $can_inotify = $ENV{EV_INOTIFY} if exists $ENV{EV_INOTIFY};
-$DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/));
+$DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", "n") =~ /[yY]/));
 
 print <<EOF;
 
@@ -227,7 +227,7 @@ EOF
 
 my $can_eventfd = -e "/usr/include/sys/eventfd.h";
 $can_eventfd = $ENV{EV_EVENTFD} if exists $ENV{EV_EVENTFD};
-$DEFINE .= " -DEV_USE_EVENTFD=" . (0 + (prompt ("Enable linux eventfd support (y/n)?", $can_eventfd ? "y" : "n") =~ /[yY]/));
+$DEFINE .= " -DEV_USE_EVENTFD=" . (0 + (prompt ("Enable linux eventfd support (y/n)?", "n") =~ /[yY]/));
 
 print <<EOF;
 
@@ -243,7 +243,7 @@ EOF
 
 my $can_signalfd = -e "/usr/include/sys/signalfd.h";
 $can_signalfd = $ENV{EV_SIGNALFD} if exists $ENV{EV_SIGNALFD};
-$DEFINE .= " -DEV_USE_SIGNALFD=" . (0 + (prompt ("Enable linux signalfd support (y/n)?", $can_signalfd ? "y" : "n") =~ /[yY]/));
+$DEFINE .= " -DEV_USE_SIGNALFD=" . (0 + (prompt ("Enable linux signalfd support (y/n)?", "n") =~ /[yY]/));
 
 print <<EOF;