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;

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


Another useful bit of functionality is the Linux eventfd, which is useful
for faster signal handling (don't care) and intra-thread communications
(mostly useful for embedding). Kernel support for this will be probed at
runtime, but your libc must contain the necessary wrapper. Glibc 2.7 and
later should have this wrapper.

EOF

$DEFINE .= " -DEV_USE_EVENTFD=" . (0 + (prompt ("Enable linux eventfd support (y/n)?", (-e "/usr/include/sys/eventfd.h") ? "y" : "n") =~ /[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 by default it
won't be used on many platforms, but you can still create your own event
loop with qkueue backend.

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:	1.32
Committed:	Sun Apr 6 09:53:16 2008 UTC (16 years, 1 month ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.31:	+15 -0 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	1.32	Another useful bit of functionality is the Linux eventfd, which is useful
72			for faster signal handling (don't care) and intra-thread communications
73			(mostly useful for embedding). Kernel support for this will be probed at
74			runtime, but your libc must contain the necessary wrapper. Glibc 2.7 and
75			later should have this wrapper.
76
77			EOF
78
79			$DEFINE .= " -DEV_USE_EVENTFD=" . (0 + (prompt ("Enable linux eventfd support (y/n)?", (-e "/usr/include/sys/eventfd.h") ? "y" : "n") =~ /[yY]/));
80
81			print <<EOF;
82
83			* * * * * * * * * * * * * * * * * *
84
85
86	root	1.19	EV can use various backends with various portability issue. The select
87			backend is the most portable and makes for a good fallback, but it can be
88	root	1.22	limited to a low number of file descriptors and/or might not compile. If
89			you have problems with compiling ev_select.c, you might try to play around
90	root	1.19	with disabling it here, or forcing it to use the fd_set provided by your
91			OS, via the next question. I highly recommend keeping it in.
92
93			EOF
94
95			if (prompt ("Enable select backend (y/n)?", "y") =~ /[yY]/) {
96	root	1.22	$DEFINE .= " -DEV_USE_SELECT=1";
97	root	1.19
98			print <<EOF;
99
100	root	1.22	* * * * * * * * * * * * * * * * * *
101	root	1.19
102
103			The select backend can operate in two modes. One uses the system-provided
104			fd_set and is usually limited to 1024 file descriptors (64 on windows),
105			the other requires your header files to define NFDBITS and declare a
106			suitable fd_mask type. If you run into problems compiling ev_select.c, you
107			can try forcing the use of the system fd_set here.
108
109			EOF
110
111			if (prompt ("Force use of system fd_set for select backend (y/n)?", "n") =~ /[yY]/) {
112			$DEFINE .= " -DEV_SELECT_USE_FD_SET";
113			}
114	root	1.22	} else {
115			$DEFINE .= " -DEV_USE_SELECT=0";
116	root	1.19	}
117
118			print <<EOF;
119
120	root	1.22	* * * * * * * * * * * * * * * * * *
121	root	1.19
122
123			The second very portable backend is poll(2). It does not exist on windows
124			and various versions of Mac OS X (and on the other versions it simply
125			doesn't work), but works basically everywhere else. It is recommended to use
126			the default here unless you run into compile problems in ev_poll.c.
127
128			EOF
129
130	root	1.22	$DEFINE .= " -DEV_USE_POLL=" . (0 + (prompt ("Enable poll backend (y/n)?", (-e "/usr/include/poll.h") ? "y" : "n") =~ /[yY]/));
131	root	1.19
132			print <<EOF;
133
134	root	1.22	* * * * * * * * * * * * * * * * * *
135	root	1.19
136
137	root	1.24	Select and poll make it hard to write efficient servers, especially if the
138			number of active connections is much lower than the watched ones. GNU/Linux
139			systems have a more scalable method called "epoll", which EV can use. For
140			this to work, both your kernel and glibc have to support epoll, but if you
141			can compile it, the detection will be done at runtime, and EV will safely
142			fall back to using select when epoll isn't available. If unsure, accept
143			the default.
144	root	1.11
145			EOF
146
147	root	1.22	$DEFINE .= " -DEV_USE_EPOLL=" . (0 + (prompt ("Enable epoll backend (y/n)?", (-e "/usr/include/sys/epoll.h") ? "y" : "n") =~ /[yY]/));
148	root	1.15
149			print <<EOF;
150
151	root	1.22	* * * * * * * * * * * * * * * * * *
152	root	1.15
153
154	root	1.23	Similarly to the epoll backend above, EV can take advantage of kqueue on
155			many BSD systems. Support for kqueue will be detected at runtime, with a
156			safe fallback to other methods when it cannot be used.
157
158	root	1.31	Note that kqueue is broken on most operating systems, so by default it
159			won't be used on many platforms, but you can still create your own event
160			loop with qkueue backend.
161
162			Here is what we know:
163	root	1.23
164	root	1.28	NetBSD: partially working in at least 3.1. Yeah! :)
165	root	1.24	FreeBSD: broken on at least 6.2-STABLE,
166	root	1.28	sockets likely work, ptys definitely don't.
167	root	1.23	OpenBSD: reports indicate that it likely doesn't work
168			(similar problems as on FreeBSD).
169	root	1.28	OS X: completely, utterly broken on at least < 10.5.
170	root	1.11
171	root	1.15	EOF
172
173	root	1.28	my $can_kqueue = -e "/usr/include/sys/event.h";
174	root	1.23
175			$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/));
176	root	1.11
177			print <<EOF;
178
179	root	1.22	* * * * * * * * * * * * * * * * * *
180	root	1.11
181
182	root	1.21	Similarly to the kqueue backend above, EV can take advantage of the
183	root	1.26	solaris 10 event port interface. Support for event ports will be detected
184			at runtime, with a safe fallback to other methods when it cannot be used.
185	root	1.21
186			EOF
187
188	root	1.26	$DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable event port backend (y/n)?", (-e "/usr/include/sys/port.h") ? "y" : "n") =~ /[yY]/));
189	root	1.21
190			print <<EOF;
191
192	root	1.22	* * * * * * * * * * * * * * * * * *
193	root	1.21
194
195	root	1.11	EV needs the functions pthread_atfork and clock_gettime. On most systems
196	root	1.15	you need some special libraries for this (such as -lrt and -lpthread). You
197	root	1.23	can specify additional libraries to provide these calls (and any other
198			required by EV) now, or accept the default.
199	root	1.11
200			EOF
201
202	root	1.23	$SOLARIS_LIBS = $^O =~ /solaris/ ? " -lsocket -lnsl" : "";
203
204			$LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "-lpthread -lrt$SOLARIS_LIBS";
205	root	1.15
206	root	1.11
207			print <<EOF;
208
209	root	1.22	* * * * * * * * * * * * * * * * * *
210	root	1.11
211
212	root	1.25	A backend of a different kind is the Linux inotify(7) interface, which can
213			be used to speed up (and reduce resource consumption) of stat watchers. If
214			you have it, it is usually a good idea to enable it.
215
216			EOF
217
218			my $can_inotify = -e "/usr/include/sys/inotify.h";
219
220			$DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/));
221
222			print <<EOF;
223
224			* * * * * * * * * * * * * * * * * *
225
226
227	root	1.11	EOF
228
229	root	1.20	my @anyevent = eval { require AnyEvent; $AnyEvent::VERSION < 2.6 } ? (AnyEvent => 2.6) : ();
230
231	root	1.1	WriteMakefile(
232			dist => {
233	root	1.2	PREOP => 'pod2text EV.pm \| tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;',
234	root	1.1	COMPRESS => 'gzip -9v',
235			SUFFIX => '.gz',
236			},
237	root	1.10	depend => {
238	root	1.13	"EV.c" => "EV/EVAPI.h "
239	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 "
240	root	1.30	. "libev/ev_vars.h libev/ev_wrap.h",
241	root	1.10	},
242	root	1.8	INC => "-Ilibev",
243	root	1.11	DEFINE => "$DEFINE",
244	root	1.2	NAME => "EV",
245	root	1.11	LIBS => [$LIBS],
246	root	1.20	PREREQ_PM => {
247			@anyevent,
248			},
249	root	1.2	VERSION_FROM => "EV.pm",
250	root	1.5	PM => {
251			'EV.pm' => '$(INST_LIBDIR)/EV.pm',
252			'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h',
253			'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm',
254	root	1.8	'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h',
255	root	1.5	},
256	root	1.1	);
257
258	root	1.6