EV/Makefile.PL

use 5.006;

use strict qw(vars subs);
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

my $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

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]/));

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 kqueue 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";
$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]/));

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

my $solaris_libs = $^O =~ /solaris/i ? "-lsocket -lnsl" : "";
my $librt = $^O =~ /linux/i ? "-lpthread" : "-lpthread -lrt";
my $LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "$librt $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";
$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]/));

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
(more relevant). 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

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]/));

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'        => '$(INST_LIBDIR)/EV/ev.h',
                    'libev/ev.pod'      => '$(INST_LIBDIR)/EV/libev.pod',
                 },
    MAN3PODS => {
                    'EV.pm'           => '$(INST_MAN3DIR)/EV.$(MAN3EXT)',
                    'EV/MakeMaker.pm' => '$(INST_MAN3DIR)/EV::MakeMaker.$(MAN3EXT)',
                    'libev/ev.pod'    => '$(INST_MAN3DIR)/EV::libev.$(MAN3EXT)',
                },
);


Revision:	1.38
Committed:	Thu Nov 20 00:35:16 2008 UTC (15 years, 5 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-3_51, rel-3_52
Changes since 1.37:	+3 -2 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.4	use 5.006;
2
3	root	1.37	use strict qw(vars subs);
4	root	1.7	use Config;
5	root	1.1	use ExtUtils::MakeMaker;
6
7	root	1.10	unless (-e "libev/ev_epoll.c") {
8			print <<EOF;
9
10			***
11			*** ERROR: libev is missing or damaged. If you used a CVS check-out of EV,
12			*** you also have to check-out the "libev" module from the same CVS
13			*** repository into the EV dir (i.e. EV/libev from outside).
14			***
15
16			EOF
17			exit 1;
18			}
19
20	root	1.11	print <<EOF;
21
22	root	1.22	* * * * * * * * * * * * * * * * * *
23	root	1.11
24
25			Welcome to EV configuration. If you are in a hurry, just press return here
26			and hope for the best. The defaults should usually do.
27
28			EOF
29
30			if (prompt ("Skip further questions and use defaults (y/n)?", "y") =~ /[yY]/) {
31			$ENV{PERL_MM_USE_DEFAULT} = 1;
32			}
33
34			print <<EOF;
35
36	root	1.22	* * * * * * * * * * * * * * * * * *
37	root	1.11
38
39	root	1.14	POSIX optionally offers support for a monotonic clock source. EV
40			can take advantage of this clock source to detect time jumps
41			reliably. Unfortunately, some systems are bound to be broken, so you can
42			disable this here: you can completely disable the detection and use of
43			the monotonic clock by answering 'n' here. Support for this clock type
44	root	1.29	will otherwise be autodetected at both compile- and runtime. (this setting
45			currently affects the use of nanosleep over select as well).
46	root	1.11
47			EOF
48
49	root	1.37	my $DEFINE .= " -DEV_USE_MONOTONIC=" . (0 + (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/));
50	root	1.11
51			print <<EOF;
52
53	root	1.22	* * * * * * * * * * * * * * * * * *
54	root	1.11
55
56			POSIX optionally offers support for a (potentially) high-resolution
57			realtime clock interface. In a good implementation, using it is faster
58			than the normal method of using gettimeofday. Unfortunately, this option
59			is also bound to be broken on some systems, so you can disable use and
60			probing of this feature altogether here. Otherwise support for this clock
61			type will be autodetected at compiletime.
62
63			EOF
64
65	root	1.22	$DEFINE .= " -DEV_USE_REALTIME=" . (0 + (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "y") =~ /[yY]/));
66	root	1.11
67			print <<EOF;
68
69	root	1.22	* * * * * * * * * * * * * * * * * *
70	root	1.11
71
72	root	1.19	EV can use various backends with various portability issue. The select
73			backend is the most portable and makes for a good fallback, but it can be
74	root	1.22	limited to a low number of file descriptors and/or might not compile. If
75			you have problems with compiling ev_select.c, you might try to play around
76	root	1.19	with disabling it here, or forcing it to use the fd_set provided by your
77			OS, via the next question. I highly recommend keeping it in.
78
79			EOF
80
81			if (prompt ("Enable select backend (y/n)?", "y") =~ /[yY]/) {
82	root	1.22	$DEFINE .= " -DEV_USE_SELECT=1";
83	root	1.19
84			print <<EOF;
85
86	root	1.22	* * * * * * * * * * * * * * * * * *
87	root	1.19
88
89			The select backend can operate in two modes. One uses the system-provided
90			fd_set and is usually limited to 1024 file descriptors (64 on windows),
91			the other requires your header files to define NFDBITS and declare a
92			suitable fd_mask type. If you run into problems compiling ev_select.c, you
93			can try forcing the use of the system fd_set here.
94
95			EOF
96
97			if (prompt ("Force use of system fd_set for select backend (y/n)?", "n") =~ /[yY]/) {
98			$DEFINE .= " -DEV_SELECT_USE_FD_SET";
99			}
100	root	1.22	} else {
101			$DEFINE .= " -DEV_USE_SELECT=0";
102	root	1.19	}
103
104			print <<EOF;
105
106	root	1.22	* * * * * * * * * * * * * * * * * *
107	root	1.19
108
109			The second very portable backend is poll(2). It does not exist on windows
110			and various versions of Mac OS X (and on the other versions it simply
111			doesn't work), but works basically everywhere else. It is recommended to use
112			the default here unless you run into compile problems in ev_poll.c.
113
114			EOF
115
116	root	1.22	$DEFINE .= " -DEV_USE_POLL=" . (0 + (prompt ("Enable poll backend (y/n)?", (-e "/usr/include/poll.h") ? "y" : "n") =~ /[yY]/));
117	root	1.19
118			print <<EOF;
119
120	root	1.22	* * * * * * * * * * * * * * * * * *
121	root	1.19
122
123	root	1.24	Select and poll make it hard to write efficient servers, especially if the
124			number of active connections is much lower than the watched ones. GNU/Linux
125			systems have a more scalable method called "epoll", which EV can use. For
126			this to work, both your kernel and glibc have to support epoll, but if you
127			can compile it, the detection will be done at runtime, and EV will safely
128			fall back to using select when epoll isn't available. If unsure, accept
129			the default.
130	root	1.11
131			EOF
132
133	root	1.37	my $can_epoll = -e "/usr/include/sys/epoll.h";
134			$can_epoll = $ENV{EV_EPOLL} if exists $ENV{EV_EPOLL};
135			$DEFINE .= " -DEV_USE_EPOLL=" . (0 + (prompt ("Enable epoll backend (y/n)?", $can_epoll ? "y" : "n") =~ /[yY]/));
136	root	1.15
137			print <<EOF;
138
139	root	1.22	* * * * * * * * * * * * * * * * * *
140	root	1.15
141
142	root	1.23	Similarly to the epoll backend above, EV can take advantage of kqueue on
143			many BSD systems. Support for kqueue will be detected at runtime, with a
144			safe fallback to other methods when it cannot be used.
145
146	root	1.31	Note that kqueue is broken on most operating systems, so by default it
147			won't be used on many platforms, but you can still create your own event
148	root	1.37	loop with kqueue backend.
149	root	1.31
150			Here is what we know:
151	root	1.23
152	root	1.28	NetBSD: partially working in at least 3.1. Yeah! :)
153	root	1.24	FreeBSD: broken on at least 6.2-STABLE,
154	root	1.28	sockets likely work, ptys definitely don't.
155	root	1.23	OpenBSD: reports indicate that it likely doesn't work
156			(similar problems as on FreeBSD).
157	root	1.28	OS X: completely, utterly broken on at least < 10.5.
158	root	1.11
159	root	1.15	EOF
160
161	root	1.28	my $can_kqueue = -e "/usr/include/sys/event.h";
162	root	1.37	$can_kqueue = $ENV{EV_KQUEUE} if exists $ENV{EV_KQUEUE};
163	root	1.23	$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/));
164	root	1.11
165			print <<EOF;
166
167	root	1.22	* * * * * * * * * * * * * * * * * *
168	root	1.11
169
170	root	1.21	Similarly to the kqueue backend above, EV can take advantage of the
171	root	1.26	solaris 10 event port interface. Support for event ports will be detected
172			at runtime, with a safe fallback to other methods when it cannot be used.
173	root	1.21
174			EOF
175
176	root	1.26	$DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable event port backend (y/n)?", (-e "/usr/include/sys/port.h") ? "y" : "n") =~ /[yY]/));
177	root	1.21
178			print <<EOF;
179
180	root	1.22	* * * * * * * * * * * * * * * * * *
181	root	1.21
182
183	root	1.11	EV needs the functions pthread_atfork and clock_gettime. On most systems
184	root	1.15	you need some special libraries for this (such as -lrt and -lpthread). You
185	root	1.23	can specify additional libraries to provide these calls (and any other
186			required by EV) now, or accept the default.
187	root	1.11
188			EOF
189
190	root	1.38	my $solaris_libs = $^O =~ /solaris/i ? "-lsocket -lnsl" : "";
191			my $librt = $^O =~ /linux/i ? "-lpthread" : "-lpthread -lrt";
192			my $LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "$librt $solaris_libs";
193	root	1.15
194	root	1.11
195			print <<EOF;
196
197	root	1.22	* * * * * * * * * * * * * * * * * *
198	root	1.11
199
200	root	1.25	A backend of a different kind is the Linux inotify(7) interface, which can
201			be used to speed up (and reduce resource consumption) of stat watchers. If
202			you have it, it is usually a good idea to enable it.
203
204			EOF
205
206			my $can_inotify = -e "/usr/include/sys/inotify.h";
207	root	1.37	$can_inotify = $ENV{EV_INOTIFY} if exists $ENV{EV_INOTIFY};
208	root	1.25	$DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/));
209
210			print <<EOF;
211
212			* * * * * * * * * * * * * * * * * *
213
214
215	root	1.36	Another useful bit of functionality is the Linux eventfd, which is useful
216			for faster signal handling (don't care) and intra-thread communications
217			(more relevant). Kernel support for this will be probed at runtime, but
218			your libc must contain the necessary wrapper. Glibc 2.7 and later should
219			have this wrapper.
220
221			EOF
222
223	root	1.37	my $can_eventfd = -e "/usr/include/sys/eventfd.h";
224			$can_eventfd = $ENV{EV_EVENTFD} if exists $ENV{EV_EVENTFD};
225			$DEFINE .= " -DEV_USE_EVENTFD=" . (0 + (prompt ("Enable linux eventfd support (y/n)?", $can_eventfd ? "y" : "n") =~ /[yY]/));
226	root	1.36
227			print <<EOF;
228
229			* * * * * * * * * * * * * * * * * *
230
231
232	root	1.11	EOF
233
234	root	1.20	my @anyevent = eval { require AnyEvent; $AnyEvent::VERSION < 2.6 } ? (AnyEvent => 2.6) : ();
235
236	root	1.1	WriteMakefile(
237			dist => {
238	root	1.2	PREOP => 'pod2text EV.pm \| tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;',
239	root	1.1	COMPRESS => 'gzip -9v',
240			SUFFIX => '.gz',
241			},
242	root	1.10	depend => {
243	root	1.13	"EV.c" => "EV/EVAPI.h "
244	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 "
245	root	1.30	. "libev/ev_vars.h libev/ev_wrap.h",
246	root	1.10	},
247	root	1.8	INC => "-Ilibev",
248	root	1.11	DEFINE => "$DEFINE",
249	root	1.2	NAME => "EV",
250	root	1.11	LIBS => [$LIBS],
251	root	1.20	PREREQ_PM => {
252			@anyevent,
253			},
254	root	1.2	VERSION_FROM => "EV.pm",
255	root	1.5	PM => {
256			'EV.pm' => '$(INST_LIBDIR)/EV.pm',
257			'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h',
258			'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm',
259	root	1.8	'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h',
260	root	1.35	'libev/ev.pod' => '$(INST_LIBDIR)/EV/libev.pod',
261	root	1.5	},
262	root	1.34	MAN3PODS => {
263			'EV.pm' => '$(INST_MAN3DIR)/EV.$(MAN3EXT)',
264			'EV/MakeMaker.pm' => '$(INST_MAN3DIR)/EV::MakeMaker.$(MAN3EXT)',
265	root	1.35	'libev/ev.pod' => '$(INST_MAN3DIR)/EV::libev.$(MAN3EXT)',
266	root	1.34	},
267	root	1.1	);
268
269	root	1.6