EV/Makefile.PL

use 5.006;

use Config;
use ExtUtils::MakeMaker;

unless (-e "libev/ev_epoll.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;

*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***


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. (this setting
currently affects the use of nanosleep over select as well).

EOF

$DEFINE .= " -DEV_USE_MONOTONIC=" . (0 + (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/));

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

$DEFINE .= " -DEV_USE_REALTIME=" . (0 + (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "y") =~ /[yY]/));

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.c, 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=1";

   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";
   } 
} else {
   $DEFINE .= " -DEV_USE_SELECT=0";
} 

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

$DEFINE .= " -DEV_USE_POLL=" . (0 + (prompt ("Enable poll backend (y/n)?", (-e "/usr/include/poll.h") ? "y" : "n") =~ /[yY]/));

print <<EOF;

*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***


Select and poll make it hard to write efficient servers, especially if the
number of active connections is much lower than the watched 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

$DEFINE .= " -DEV_USE_EPOLL=" . (0 + (prompt ("Enable epoll backend (y/n)?", (-e "/usr/include/sys/epoll.h") ? "y" : "n") =~ /[yY]/));

print <<EOF;

*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***


Similarly to the epoll backend above, EV can take advantage of kqueue on
many BSD systems. Support for kqueue will be detected at runtime, with a
safe fallback to other methods when it cannot be used.

Note that kqueue is broken on most operating systems, so it defaults to
'n' on everything but netbsd. Here is what we know:

NetBSD:  partially working in at least 3.1. Yeah! :)
FreeBSD: broken on at least 6.2-STABLE,
         sockets *likely* work, ptys definitely don't.
OpenBSD: reports indicate that it likely doesn't work
         (similar problems as on FreeBSD).
OS X:    completely, utterly broken on at least < 10.5.

EOF

my $can_kqueue = -e "/usr/include/sys/event.h";

$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/));

print <<EOF;

*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***


Similarly to the kqueue backend above, EV can take advantage of the
solaris 10 event port interface. Support for event ports will be detected
at runtime, with a safe fallback to other methods when it cannot be used.

EOF

$DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable event port backend (y/n)?", (-e "/usr/include/sys/port.h") ? "y" : "n") =~ /[yY]/));

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 (and any other
required by EV) now, or accept the default.

EOF

$SOLARIS_LIBS = $^O =~ /solaris/ ? " -lsocket -lnsl" : "";

$LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "-lpthread -lrt$SOLARIS_LIBS";


print <<EOF;

*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***


A backend of a different kind is the Linux inotify(7) interface, which can
be used to speed up (and reduce resource consumption) of stat watchers. If
you have it, it is usually a good idea to enable it.

EOF

my $can_inotify = -e "/usr/include/sys/inotify.h";

$DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/));

print <<EOF;

*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***


EOF

my @anyevent = eval { require AnyEvent; $AnyEvent::VERSION < 2.6 } ? (AnyEvent => 2.6) : ();

WriteMakefile(
    dist        => {
                    PREOP       => 'pod2text EV.pm | tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;',
                    COMPRESS    => 'gzip -9v',
                    SUFFIX      => '.gz',
                   },
    depend => {
       "EV.c" => "EV/EVAPI.h "
               . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c "
               . "libev/ev_vars.h libev/ev_wrap.h",
    },
    INC       => "-Ilibev",
    DEFINE    => "$DEFINE",
    NAME => "EV",
    LIBS => [$LIBS],
    PREREQ_PM => {
       @anyevent,
    },
    VERSION_FROM => "EV.pm",
    PM           => {
                    'EV.pm'             => '$(INST_LIBDIR)/EV.pm',
                    'EV/EVAPI.h'        => '$(INST_LIBDIR)/EV/EVAPI.h',
                    'EV/MakeMaker.pm'   => '$(INST_LIBDIR)/EV/MakeMaker.pm',
                    'libev/ev.h'        => '$(INST_LIBDIR)/EV/ev.h',
                 },
);


Revision:	1.30
Committed:	Sat Dec 22 12:05:42 2007 UTC (16 years, 4 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-2_01, rel-2_0, rel-3_0
Changes since 1.29:	+1 -1 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.4	use 5.006;
2
3	root	1.7	use Config;
4	root	1.1	use ExtUtils::MakeMaker;
5
6	root	1.10	unless (-e "libev/ev_epoll.c") {
7			print <<EOF;
8
9			***
10			*** ERROR: libev is missing or damaged. If you used a CVS check-out of EV,
11			*** you also have to check-out the "libev" module from the same CVS
12			*** repository into the EV dir (i.e. EV/libev from outside).
13			***
14
15			EOF
16			exit 1;
17			}
18
19	root	1.11	print <<EOF;
20
21	root	1.22	* * * * * * * * * * * * * * * * * *
22	root	1.11
23
24			Welcome to EV configuration. If you are in a hurry, just press return here
25			and hope for the best. The defaults should usually do.
26
27			EOF
28
29			if (prompt ("Skip further questions and use defaults (y/n)?", "y") =~ /[yY]/) {
30			$ENV{PERL_MM_USE_DEFAULT} = 1;
31			}
32
33			print <<EOF;
34
35	root	1.22	* * * * * * * * * * * * * * * * * *
36	root	1.11
37
38	root	1.14	POSIX optionally offers support for a monotonic clock source. EV
39			can take advantage of this clock source to detect time jumps
40			reliably. Unfortunately, some systems are bound to be broken, so you can
41			disable this here: you can completely disable the detection and use of
42			the monotonic clock by answering 'n' here. Support for this clock type
43	root	1.29	will otherwise be autodetected at both compile- and runtime. (this setting
44			currently affects the use of nanosleep over select as well).
45	root	1.11
46			EOF
47
48	root	1.22	$DEFINE .= " -DEV_USE_MONOTONIC=" . (0 + (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/));
49	root	1.11
50			print <<EOF;
51
52	root	1.22	* * * * * * * * * * * * * * * * * *
53	root	1.11
54
55			POSIX optionally offers support for a (potentially) high-resolution
56			realtime clock interface. In a good implementation, using it is faster
57			than the normal method of using gettimeofday. Unfortunately, this option
58			is also bound to be broken on some systems, so you can disable use and
59			probing of this feature altogether here. Otherwise support for this clock
60			type will be autodetected at compiletime.
61
62			EOF
63
64	root	1.22	$DEFINE .= " -DEV_USE_REALTIME=" . (0 + (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "y") =~ /[yY]/));
65	root	1.11
66			print <<EOF;
67
68	root	1.22	* * * * * * * * * * * * * * * * * *
69	root	1.11
70
71	root	1.19	EV can use various backends with various portability issue. The select
72			backend is the most portable and makes for a good fallback, but it can be
73	root	1.22	limited to a low number of file descriptors and/or might not compile. If
74			you have problems with compiling ev_select.c, you might try to play around
75	root	1.19	with disabling it here, or forcing it to use the fd_set provided by your
76			OS, via the next question. I highly recommend keeping it in.
77
78			EOF
79
80			if (prompt ("Enable select backend (y/n)?", "y") =~ /[yY]/) {
81	root	1.22	$DEFINE .= " -DEV_USE_SELECT=1";
82	root	1.19
83			print <<EOF;
84
85	root	1.22	* * * * * * * * * * * * * * * * * *
86	root	1.19
87
88			The select backend can operate in two modes. One uses the system-provided
89			fd_set and is usually limited to 1024 file descriptors (64 on windows),
90			the other requires your header files to define NFDBITS and declare a
91			suitable fd_mask type. If you run into problems compiling ev_select.c, you
92			can try forcing the use of the system fd_set here.
93
94			EOF
95
96			if (prompt ("Force use of system fd_set for select backend (y/n)?", "n") =~ /[yY]/) {
97			$DEFINE .= " -DEV_SELECT_USE_FD_SET";
98			}
99	root	1.22	} else {
100			$DEFINE .= " -DEV_USE_SELECT=0";
101	root	1.19	}
102
103			print <<EOF;
104
105	root	1.22	* * * * * * * * * * * * * * * * * *
106	root	1.19
107
108			The second very portable backend is poll(2). It does not exist on windows
109			and various versions of Mac OS X (and on the other versions it simply
110			doesn't work), but works basically everywhere else. It is recommended to use
111			the default here unless you run into compile problems in ev_poll.c.
112
113			EOF
114
115	root	1.22	$DEFINE .= " -DEV_USE_POLL=" . (0 + (prompt ("Enable poll backend (y/n)?", (-e "/usr/include/poll.h") ? "y" : "n") =~ /[yY]/));
116	root	1.19
117			print <<EOF;
118
119	root	1.22	* * * * * * * * * * * * * * * * * *
120	root	1.19
121
122	root	1.24	Select and poll make it hard to write efficient servers, especially if the
123			number of active connections is much lower than the watched ones. GNU/Linux
124			systems have a more scalable method called "epoll", which EV can use. For
125			this to work, both your kernel and glibc have to support epoll, but if you
126			can compile it, the detection will be done at runtime, and EV will safely
127			fall back to using select when epoll isn't available. If unsure, accept
128			the default.
129	root	1.11
130			EOF
131
132	root	1.22	$DEFINE .= " -DEV_USE_EPOLL=" . (0 + (prompt ("Enable epoll backend (y/n)?", (-e "/usr/include/sys/epoll.h") ? "y" : "n") =~ /[yY]/));
133	root	1.15
134			print <<EOF;
135
136	root	1.22	* * * * * * * * * * * * * * * * * *
137	root	1.15
138
139	root	1.23	Similarly to the epoll backend above, EV can take advantage of kqueue on
140			many BSD systems. Support for kqueue will be detected at runtime, with a
141			safe fallback to other methods when it cannot be used.
142
143			Note that kqueue is broken on most operating systems, so it defaults to
144	root	1.24	'n' on everything but netbsd. Here is what we know:
145	root	1.23
146	root	1.28	NetBSD: partially working in at least 3.1. Yeah! :)
147	root	1.24	FreeBSD: broken on at least 6.2-STABLE,
148	root	1.28	sockets likely work, ptys definitely don't.
149	root	1.23	OpenBSD: reports indicate that it likely doesn't work
150			(similar problems as on FreeBSD).
151	root	1.28	OS X: completely, utterly broken on at least < 10.5.
152	root	1.11
153	root	1.15	EOF
154
155	root	1.28	my $can_kqueue = -e "/usr/include/sys/event.h";
156	root	1.23
157			$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/));
158	root	1.11
159			print <<EOF;
160
161	root	1.22	* * * * * * * * * * * * * * * * * *
162	root	1.11
163
164	root	1.21	Similarly to the kqueue backend above, EV can take advantage of the
165	root	1.26	solaris 10 event port interface. Support for event ports will be detected
166			at runtime, with a safe fallback to other methods when it cannot be used.
167	root	1.21
168			EOF
169
170	root	1.26	$DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable event port backend (y/n)?", (-e "/usr/include/sys/port.h") ? "y" : "n") =~ /[yY]/));
171	root	1.21
172			print <<EOF;
173
174	root	1.22	* * * * * * * * * * * * * * * * * *
175	root	1.21
176
177	root	1.11	EV needs the functions pthread_atfork and clock_gettime. On most systems
178	root	1.15	you need some special libraries for this (such as -lrt and -lpthread). You
179	root	1.23	can specify additional libraries to provide these calls (and any other
180			required by EV) now, or accept the default.
181	root	1.11
182			EOF
183
184	root	1.23	$SOLARIS_LIBS = $^O =~ /solaris/ ? " -lsocket -lnsl" : "";
185
186			$LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "-lpthread -lrt$SOLARIS_LIBS";
187	root	1.15
188	root	1.11
189			print <<EOF;
190
191	root	1.22	* * * * * * * * * * * * * * * * * *
192	root	1.11
193
194	root	1.25	A backend of a different kind is the Linux inotify(7) interface, which can
195			be used to speed up (and reduce resource consumption) of stat watchers. If
196			you have it, it is usually a good idea to enable it.
197
198			EOF
199
200			my $can_inotify = -e "/usr/include/sys/inotify.h";
201
202			$DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/));
203
204			print <<EOF;
205
206			* * * * * * * * * * * * * * * * * *
207
208
209	root	1.11	EOF
210
211	root	1.20	my @anyevent = eval { require AnyEvent; $AnyEvent::VERSION < 2.6 } ? (AnyEvent => 2.6) : ();
212
213	root	1.1	WriteMakefile(
214			dist => {
215	root	1.2	PREOP => 'pod2text EV.pm \| tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;',
216	root	1.1	COMPRESS => 'gzip -9v',
217			SUFFIX => '.gz',
218			},
219	root	1.10	depend => {
220	root	1.13	"EV.c" => "EV/EVAPI.h "
221	root	1.17	. "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c "
222	root	1.30	. "libev/ev_vars.h libev/ev_wrap.h",
223	root	1.10	},
224	root	1.8	INC => "-Ilibev",
225	root	1.11	DEFINE => "$DEFINE",
226	root	1.2	NAME => "EV",
227	root	1.11	LIBS => [$LIBS],
228	root	1.20	PREREQ_PM => {
229			@anyevent,
230			},
231	root	1.2	VERSION_FROM => "EV.pm",
232	root	1.5	PM => {
233			'EV.pm' => '$(INST_LIBDIR)/EV.pm',
234			'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h',
235			'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm',
236	root	1.8	'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h',
237	root	1.5	},
238	root	1.1	);
239
240	root	1.6