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Comparing EV/Makefile.PL (file contents):
Revision 1.5 by root, Mon Oct 29 08:48:07 2007 UTC vs.
Revision 1.31 by root, Thu Jan 31 19:59:23 2008 UTC

1use 5.006; 1use 5.006;
2 2
3use Config;
3use ExtUtils::MakeMaker; 4use ExtUtils::MakeMaker;
4 5
6unless (-e "libev/ev_epoll.c") {
5print <<EOF; 7 print <<EOF;
6 8
7*** 9***
8*** You need to install libevent (http://monkey.org/~provos/libevent/) separately 10*** ERROR: libev is missing or damaged. If you used a CVS check-out of EV,
9*** first in a way so that the Makefile.PL can find both -levent and the event.h 11*** you also have to check-out the "libev" module from the same CVS
10*** and evdns.h include files. 12*** repository into the EV dir (i.e. EV/libev from outside).
11*** 13***
12*** Version 1.3e or higher is recommended, but older 1.3 versions likely work too.
13***
14 14
15EOF 15EOF
16 exit 1;
17}
18
19print <<EOF;
20
21*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
22
23
24Welcome to EV configuration. If you are in a hurry, just press return here
25and hope for the best. The defaults should usually do.
26
27EOF
28
29if (prompt ("Skip further questions and use defaults (y/n)?", "y") =~ /[yY]/) {
30 $ENV{PERL_MM_USE_DEFAULT} = 1;
31}
32
33print <<EOF;
34
35*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
36
37
38POSIX optionally offers support for a monotonic clock source. EV
39can take advantage of this clock source to detect time jumps
40reliably. Unfortunately, some systems are bound to be broken, so you can
41disable this here: you can completely disable the detection and use of
42the monotonic clock by answering 'n' here. Support for this clock type
43will otherwise be autodetected at both compile- and runtime. (this setting
44currently affects the use of nanosleep over select as well).
45
46EOF
47
48$DEFINE .= " -DEV_USE_MONOTONIC=" . (0 + (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/));
49
50print <<EOF;
51
52*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
53
54
55POSIX optionally offers support for a (potentially) high-resolution
56realtime clock interface. In a good implementation, using it is faster
57than the normal method of using gettimeofday. Unfortunately, this option
58is also bound to be broken on some systems, so you can disable use and
59probing of this feature altogether here. Otherwise support for this clock
60type will be autodetected at compiletime.
61
62EOF
63
64$DEFINE .= " -DEV_USE_REALTIME=" . (0 + (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "y") =~ /[yY]/));
65
66print <<EOF;
67
68*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
69
70
71EV can use various backends with various portability issue. The select
72backend is the most portable and makes for a good fallback, but it can be
73limited to a low number of file descriptors and/or might not compile. If
74you have problems with compiling ev_select.c, you might try to play around
75with disabling it here, or forcing it to use the fd_set provided by your
76OS, via the next question. I highly recommend keeping it in.
77
78EOF
79
80if (prompt ("Enable select backend (y/n)?", "y") =~ /[yY]/) {
81 $DEFINE .= " -DEV_USE_SELECT=1";
82
83 print <<EOF;
84
85*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
86
87
88The select backend can operate in two modes. One uses the system-provided
89fd_set and is usually limited to 1024 file descriptors (64 on windows),
90the other requires your header files to define NFDBITS and declare a
91suitable fd_mask type. If you run into problems compiling ev_select.c, you
92can try forcing the use of the system fd_set here.
93
94EOF
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} else {
100 $DEFINE .= " -DEV_USE_SELECT=0";
101}
102
103print <<EOF;
104
105*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
106
107
108The second very portable backend is poll(2). It does not exist on windows
109and various versions of Mac OS X (and on the other versions it simply
110doesn't work), but works basically everywhere else. It is recommended to use
111the default here unless you run into compile problems in ev_poll.c.
112
113EOF
114
115$DEFINE .= " -DEV_USE_POLL=" . (0 + (prompt ("Enable poll backend (y/n)?", (-e "/usr/include/poll.h") ? "y" : "n") =~ /[yY]/));
116
117print <<EOF;
118
119*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
120
121
122Select and poll make it hard to write efficient servers, especially if the
123number of active connections is much lower than the watched ones. GNU/Linux
124systems have a more scalable method called "epoll", which EV can use. For
125this to work, both your kernel and glibc have to support epoll, but if you
126can compile it, the detection will be done at runtime, and EV will safely
127fall back to using select when epoll isn't available. If unsure, accept
128the default.
129
130EOF
131
132$DEFINE .= " -DEV_USE_EPOLL=" . (0 + (prompt ("Enable epoll backend (y/n)?", (-e "/usr/include/sys/epoll.h") ? "y" : "n") =~ /[yY]/));
133
134print <<EOF;
135
136*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
137
138
139Similarly to the epoll backend above, EV can take advantage of kqueue on
140many BSD systems. Support for kqueue will be detected at runtime, with a
141safe fallback to other methods when it cannot be used.
142
143Note that kqueue is broken on most operating systems, so by default it
144won't be used on many platforms, but you can still create your own event
145loop with qkueue backend.
146
147Here is what we know:
148
149NetBSD: partially working in at least 3.1. Yeah! :)
150FreeBSD: broken on at least 6.2-STABLE,
151 sockets *likely* work, ptys definitely don't.
152OpenBSD: reports indicate that it likely doesn't work
153 (similar problems as on FreeBSD).
154OS X: completely, utterly broken on at least < 10.5.
155
156EOF
157
158my $can_kqueue = -e "/usr/include/sys/event.h";
159
160$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/));
161
162print <<EOF;
163
164*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
165
166
167Similarly to the kqueue backend above, EV can take advantage of the
168solaris 10 event port interface. Support for event ports will be detected
169at runtime, with a safe fallback to other methods when it cannot be used.
170
171EOF
172
173$DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable event port backend (y/n)?", (-e "/usr/include/sys/port.h") ? "y" : "n") =~ /[yY]/));
174
175print <<EOF;
176
177*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
178
179
180EV needs the functions pthread_atfork and clock_gettime. On most systems
181you need some special libraries for this (such as -lrt and -lpthread). You
182can specify additional libraries to provide these calls (and any other
183required by EV) now, or accept the default.
184
185EOF
186
187$SOLARIS_LIBS = $^O =~ /solaris/ ? " -lsocket -lnsl" : "";
188
189$LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "-lpthread -lrt$SOLARIS_LIBS";
190
191
192print <<EOF;
193
194*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
195
196
197A backend of a different kind is the Linux inotify(7) interface, which can
198be used to speed up (and reduce resource consumption) of stat watchers. If
199you have it, it is usually a good idea to enable it.
200
201EOF
202
203my $can_inotify = -e "/usr/include/sys/inotify.h";
204
205$DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/));
206
207print <<EOF;
208
209*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
210
211
212EOF
213
214my @anyevent = eval { require AnyEvent; $AnyEvent::VERSION < 2.6 } ? (AnyEvent => 2.6) : ();
16 215
17WriteMakefile( 216WriteMakefile(
18 dist => { 217 dist => {
19 PREOP => 'pod2text EV.pm | tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;', 218 PREOP => 'pod2text EV.pm | tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;',
20 COMPRESS => 'gzip -9v', 219 COMPRESS => 'gzip -9v',
21 SUFFIX => '.gz', 220 SUFFIX => '.gz',
22 }, 221 },
23 LIBS => ["-levent"], 222 depend => {
223 "EV.c" => "EV/EVAPI.h "
224 . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c "
225 . "libev/ev_vars.h libev/ev_wrap.h",
226 },
227 INC => "-Ilibev",
228 DEFINE => "$DEFINE",
24 NAME => "EV", 229 NAME => "EV",
230 LIBS => [$LIBS],
231 PREREQ_PM => {
232 @anyevent,
233 },
25 VERSION_FROM => "EV.pm", 234 VERSION_FROM => "EV.pm",
26 PM => { 235 PM => {
27 'EV.pm' => '$(INST_LIBDIR)/EV.pm', 236 'EV.pm' => '$(INST_LIBDIR)/EV.pm',
28 'EV/AnyEvent.pm' => '$(INST_LIBDIR)/EV/AnyEvent.pm',
29 'EV/DNS.pm' => '$(INST_LIBDIR)/EV/DNS.pm',
30 'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h', 237 'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h',
31 'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm', 238 'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm',
239 'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h',
32 }, 240 },
33); 241);
34 242
243

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