--- cvsroot/EV/Makefile.PL	2007/11/02 11:11:05	1.14
+++ cvsroot/EV/Makefile.PL	2007/11/12 01:01:13	1.19
@@ -72,23 +72,64 @@
 
 *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
 
-EV needs the functions pthread_atfork and clock_gettime. On most systems
-you need some special libraries for this (such as -lrt and -lpthread). You can
-specify additional libraries to provide these calls now, or accept the default.
+EV can use various backends with various portability issue. The select
+backend is the most portable and makes for a good fallback, but it can be
+limited to a low number of file descriptors and/or might not compile.  If
+you have problems with compiling ev_select., you might try to play around
+with disabling it here, or forcing it to use the fd_set provided by your
+OS, via the next question. I highly recommend keeping it in.
 
 EOF
 
-$LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "-lpthread -lrt";
+if (prompt ("Enable select backend (y/n)?", "y") =~ /[yY]/) {
+   $DEFINE .= " -DEV_USE_SELECT";
+
+   print <<EOF;
+
+
+*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
 
+The select backend can operate in two modes. One uses the system-provided
+fd_set and is usually limited to 1024 file descriptors (64 on windows),
+the other requires your header files to define NFDBITS and declare a
+suitable fd_mask type. If you run into problems compiling ev_select.c, you
+can try forcing the use of the system fd_set here.
+
+EOF
+
+   if (prompt ("Force use of system fd_set for select backend (y/n)?", "n") =~ /[yY]/) {
+      $DEFINE .= " -DEV_SELECT_USE_FD_SET";
+   } 
+} 
 
 print <<EOF;
 
 
 *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
 
-EV needs the functions pthread_atfork and clock_gettime. On most systems
-you need some special libraries for this (such as -lrt and -lpthread). You can
-specify additional libraries to provide these calls now, or accept the default.
+The second very portable backend is poll(2). It does not exist on windows
+and various versions of Mac OS X (and on the other versions it simply
+doesn't work), but works basically everywhere else. It is recommended to use
+the default here unless you run into compile problems in ev_poll.c.
+
+EOF
+
+if (prompt ("Enable poll backend (y/n)?", (-e "/usr/include/poll.h") ? "y" : "n") =~ /[yY]/) {
+   $DEFINE .= " -DEV_USE_POLL";
+} 
+
+print <<EOF;
+
+
+*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
+
+EV by default uses select, which makes it hard to write efficient servers,
+especially if the number of active conencitons is much lower than the open
+ones. GNU/Linux systems have a more scalable method called "epoll", which
+EV can use. For this to work, both your kernel and glibc have to support
+epoll, but if you can compile it, the detection will be done at runtime,
+and EV will safely fall back to using select when epoll isn't available.
+If unsure, accept the default.
 
 EOF
 
@@ -101,6 +142,39 @@
 
 *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
 
+Similarly to the epoll backend above, EV can take advantage of kqueue
+on many BSD systems (it seems to be broken on Mac OS X though, but what
+isn't broken on that shoddy platform... ah yes, the cash gushing by apple,
+selling defective software works perfectly there). Support for kqueue will
+be detected at runtime, with a safe fallback to other methods when it
+cannot be used.
+
+EOF
+
+if (prompt ("Enable kqueue backend (y/n)?", (-e "/usr/include/sys/event.h") ? "y" : "n") =~ /[yY]/) {
+   $DEFINE .= " -DEV_USE_KQUEUE";
+} 
+
+print <<EOF;
+
+
+*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
+
+EV needs the functions pthread_atfork and clock_gettime. On most systems
+you need some special libraries for this (such as -lrt and -lpthread). You
+can specify additional libraries to provide these calls now, or accept the
+default.
+
+EOF
+
+$LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "-lpthread -lrt";
+
+
+print <<EOF;
+
+
+*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
+
 EOF
 
 WriteMakefile(
@@ -111,8 +185,8 @@
 	           },
     depend => {
        "EV.c" => "EV/EVAPI.h "
-               . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c "
-               . "libev/event.h libev/event.c libev/evdns.h libev/evdns.c",
+               . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c "
+               . "libev/event.h libev/event.c evdns.h evdns.c libev/ev_vars.h libev/ev_wrap.h",
     },
     INC       => "-Ilibev",
     DEFINE    => "$DEFINE",
@@ -121,7 +195,6 @@
     VERSION_FROM => "EV.pm",
     PM           => {
     		    'EV.pm'		=> '$(INST_LIBDIR)/EV.pm',
-    		    'EV/AnyEvent.pm'	=> '$(INST_LIBDIR)/EV/AnyEvent.pm',
                     'EV/DNS.pm'		=> '$(INST_LIBDIR)/EV/DNS.pm',
     		    'EV/EVAPI.h'	=> '$(INST_LIBDIR)/EV/EVAPI.h',
     		    'EV/MakeMaker.pm'	=> '$(INST_LIBDIR)/EV/MakeMaker.pm',