--- EV/Makefile.PL	2007/10/29 08:48:07	1.5
+++ EV/Makefile.PL	2007/11/14 22:30:50	1.20
@@ -1,34 +1,209 @@
 use 5.006;
 
+use Config;
 use ExtUtils::MakeMaker;
 
-print <<EOF;
+unless (-e "libev/ev_epoll.c") {
+   print <<EOF;
 
 ***
-*** You need to install libevent (http://monkey.org/~provos/libevent/) separately
-*** first in a way so that the Makefile.PL can find both -levent and the event.h
-*** and evdns.h include files.
-*** 
-*** Version 1.3e or higher is recommended, but older 1.3 versions likely work too.
-*** 
+*** 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;
+
+
+*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
+
+Welcome to EV configuration. If you are in a hurry, just press return here
+and hope for the best. The defaults should usually do.
+
+EOF
+
+if (prompt ("Skip further questions and use defaults (y/n)?", "y") =~ /[yY]/) {
+   $ENV{PERL_MM_USE_DEFAULT} = 1;
+}
+
+print <<EOF;
+
+
+*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
+
+POSIX optionally offers support for a monotonic clock source. EV
+can take advantage of this clock source to detect time jumps
+reliably. Unfortunately, some systems are bound to be broken, so you can
+disable this here: you can completely disable the detection and use of
+the monotonic clock by answering 'n' here. Support for this clock type
+will otherwise be autodetected at both compile- and runtime.
+
+EOF
+
+if (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/) {
+   $DEFINE .= " -DEV_USE_MONOTONIC";
+}
+
+print <<EOF;
+
+
+*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
+
+POSIX optionally offers support for a (potentially) high-resolution
+realtime clock interface. In a good implementation, using it is faster
+than the normal method of using gettimeofday. Unfortunately, this option
+is also bound to be broken on some systems, so you can disable use and
+probing of this feature altogether here. Otherwise support for this clock
+type will be autodetected at compiletime.
+
+EOF
+
+if (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "y") !~ /[yY]/) {
+   $DEFINE .= " -DEV_USE_REALTIME=0";
+}
+
+print <<EOF;
+
+
+*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
+
+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
+
+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;
+
+
+*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
+
+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
+
+if (prompt ("Enable epoll backend (y/n)?", (-e "/usr/include/sys/epoll.h") ? "y" : "n") =~ /[yY]/) {
+   $DEFINE .= " -DEV_USE_EPOLL";
+} 
+
+print <<EOF;
+
+
+*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
+
+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
+
+my @anyevent = eval { require AnyEvent; $AnyEvent::VERSION < 2.6 } ? (AnyEvent => 2.6) : ();
+
 WriteMakefile(
     dist	=> {
 	            PREOP	=> 'pod2text EV.pm | tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;',
 	            COMPRESS	=> 'gzip -9v',
 	            SUFFIX	=> '.gz',
 	           },
-    LIBS => ["-levent"],
+    depend => {
+       "EV.c" => "EV/EVAPI.h "
+               . "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    => "$DEFINE",
     NAME => "EV",
+    LIBS => [$LIBS],
+    PREREQ_PM => {
+       @anyevent,
+    },
     VERSION_FROM => "EV.pm",
     PM           => {
     		    'EV.pm'		=> '$(INST_LIBDIR)/EV.pm',
-    		    'EV/AnyEvent.pm'	=> '$(INST_LIBDIR)/EV/AnyEvent.pm',
-    		    'EV/DNS.pm'		=> '$(INST_LIBDIR)/EV/DNS.pm',
+                    'EV/DNS.pm'		=> '$(INST_LIBDIR)/EV/DNS.pm',
     		    'EV/EVAPI.h'	=> '$(INST_LIBDIR)/EV/EVAPI.h',
     		    'EV/MakeMaker.pm'	=> '$(INST_LIBDIR)/EV/MakeMaker.pm',
+    		    'libev/ev.h'	=> '$(INST_LIBDIR)/EV/ev.h',
                  },
 );
 
+