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Comparing EV/Makefile.PL (file contents):
Revision 1.16 by root, Tue Nov 6 17:20:42 2007 UTC vs.
Revision 1.36 by root, Wed Oct 29 17:41:11 2008 UTC

1use 5.006; 1use 5.006;
2 2
3use Config; 3use Config;
4use ExtUtils::MakeMaker; 4use ExtUtils::MakeMaker;
5
6 5
7unless (-e "libev/ev_epoll.c") { 6unless (-e "libev/ev_epoll.c") {
8 print <<EOF; 7 print <<EOF;
9 8
10*** 9***
… …
17 exit 1; 16 exit 1;
18} 17}
19 18
20print <<EOF; 19print <<EOF;
21 20
22
23*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 21*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
22
24 23
25Welcome to EV configuration. If you are in a hurry, just press return here 24Welcome to EV configuration. If you are in a hurry, just press return here
26and hope for the best. The defaults should usually do. 25and hope for the best. The defaults should usually do.
27 26
28EOF 27EOF
… …
31 $ENV{PERL_MM_USE_DEFAULT} = 1; 30 $ENV{PERL_MM_USE_DEFAULT} = 1;
32} 31}
33 32
34print <<EOF; 33print <<EOF;
35 34
36
37*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 35*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
36
38 37
39POSIX optionally offers support for a monotonic clock source. EV 38POSIX optionally offers support for a monotonic clock source. EV
40can take advantage of this clock source to detect time jumps 39can take advantage of this clock source to detect time jumps
41reliably. Unfortunately, some systems are bound to be broken, so you can 40reliably. Unfortunately, some systems are bound to be broken, so you can
42disable this here: you can completely disable the detection and use of 41disable this here: you can completely disable the detection and use of
43the monotonic clock by answering 'n' here. Support for this clock type 42the monotonic clock by answering 'n' here. Support for this clock type
44will otherwise be autodetected at both compile- and runtime. 43will otherwise be autodetected at both compile- and runtime. (this setting
44currently affects the use of nanosleep over select as well).
45 45
46EOF 46EOF
47 47
48if (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/) { 48$DEFINE .= " -DEV_USE_MONOTONIC=" . (0 + (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/));
49 $DEFINE .= " -DEV_USE_MONOTONIC";
50}
51 49
52print <<EOF; 50print <<EOF;
53 51
54
55*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 52*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
53
56 54
57POSIX optionally offers support for a (potentially) high-resolution 55POSIX optionally offers support for a (potentially) high-resolution
58realtime clock interface. In a good implementation, using it is faster 56realtime clock interface. In a good implementation, using it is faster
59than the normal method of using gettimeofday. Unfortunately, this option 57than the normal method of using gettimeofday. Unfortunately, this option
60is also bound to be broken on some systems, so you can disable use and 58is also bound to be broken on some systems, so you can disable use and
61probing of this feature altogether here. Otherwise support for this clock 59probing of this feature altogether here. Otherwise support for this clock
62type will be autodetected at compiletime. 60type will be autodetected at compiletime.
63 61
64EOF 62EOF
65 63
66if (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "y") !~ /[yY]/) { 64$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]/) {
67 $DEFINE .= " -DEV_USE_REALTIME=0"; 81 $DEFINE .= " -DEV_USE_SELECT=1";
68}
69 82
70print <<EOF; 83 print <<EOF;
71 84
72
73*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 85*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
74 86
75EV by default uses select, which makes it hard to write efficient servers,
76especially if the number of active conencitons is much lower than the open
77ones. GNU/Linux systems have a more scalable method called "epoll", which
78EV can use. For this to work, both your kernel and glibc have to support
79epoll, but if you can compile it, the detection will be done at runtime,
80and EV will safely fall back to using select when epoll isn't available.
81If unsure, accept the default.
82 87
83EOF 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.
84 93
85if (prompt ("Enable epoll backend (y/n)?", (-e "/usr/include/sys/epoll.h") ? "y" : "n") =~ /[yY]/) { 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 {
86 $DEFINE .= " -DEV_USE_EPOLL"; 100 $DEFINE .= " -DEV_USE_SELECT=0";
87} 101}
88 102
89print <<EOF; 103print <<EOF;
90 104
91
92*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 105*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
106
107
108The second very portable backend is poll(2). It does not exist on windows
109and various versions of Mac OS X (and on the other versions it simply
110doesn't work), but works basically everywhere else. It is recommended to use
111the default here unless you run into compile problems in ev_poll.c.
112
113EOF
114
115$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
93 138
94Similarly to the epoll backend above, EV can take advantage of kqueue on 139Similarly to the epoll backend above, EV can take advantage of kqueue on
95many BSD systems (it seems to be broken on Mac OS X though). The kqueue
96backend has not been tested, however, so it is disabled by default. Please
97test (and preferably fix) the kqueue backend when you have a machine
98supporting it. Support for kqueue will be detected at runtime, with a 140many BSD systems. Support for kqueue will be detected at runtime, with a
99safe fallback to other methods when it cannot be used. 141safe fallback to other methods when it cannot be used.
100 142
101EOF 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.
102 146
103if (prompt ("Enable kqueue backend (y/n)?", (-e "/usr/include/sys/event.h") ? "y" : "n") =~ /[yY]/) { 147Here is what we know:
104 $DEFINE .= " -DEV_USE_KQUEUE";
105}
106 148
107print <<EOF; 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.
108 155
156EOF
109 157
158my $can_kqueue = -e "/usr/include/sys/event.h";
159
160$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/));
161
162print <<EOF;
163
110*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 164*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
165
166
167Similarly to the kqueue backend above, EV can take advantage of the
168solaris 10 event port interface. Support for event ports will be detected
169at runtime, with a safe fallback to other methods when it cannot be used.
170
171EOF
172
173$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
111 179
112EV needs the functions pthread_atfork and clock_gettime. On most systems 180EV needs the functions pthread_atfork and clock_gettime. On most systems
113you need some special libraries for this (such as -lrt and -lpthread). You 181you need some special libraries for this (such as -lrt and -lpthread). You
114can specify additional libraries to provide these calls now, or accept the 182can specify additional libraries to provide these calls (and any other
115default. 183required by EV) now, or accept the default.
116 184
117EOF 185EOF
118 186
187$SOLARIS_LIBS = $^O =~ /solaris/ ? " -lsocket -lnsl" : "";
188
119$LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "-lpthread -lrt"; 189$LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "-lpthread -lrt$SOLARIS_LIBS";
120 190
121 191
122print <<EOF; 192print <<EOF;
123 193
124
125*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 194*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
126 195
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
127EOF 201EOF
202
203my $can_inotify = -e "/usr/include/sys/inotify.h";
204
205$DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/));
206
207print <<EOF;
208
209*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
210
211
212Another useful bit of functionality is the Linux eventfd, which is useful
213for faster signal handling (don't care) and intra-thread communications
214(more relevant). Kernel support for this will be probed at runtime, but
215your libc must contain the necessary wrapper. Glibc 2.7 and later should
216have this wrapper.
217
218EOF
219
220$DEFINE .= " -DEV_USE_EVENTFD=" . (0 + (prompt ("Enable linux eventfd support (y/n)?", (-e "/usr/include/sys/eventfd.h") || $ENV{EV_EVENTFD} ? "y" : "n") =~ /[yY]/));
221
222print <<EOF;
223
224*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
225
226
227EOF
228
229my @anyevent = eval { require AnyEvent; $AnyEvent::VERSION < 2.6 } ? (AnyEvent => 2.6) : ();
128 230
129WriteMakefile( 231WriteMakefile(
130 dist => { 232 dist => {
131 PREOP => 'pod2text EV.pm | tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;', 233 PREOP => 'pod2text EV.pm | tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;',
132 COMPRESS => 'gzip -9v', 234 COMPRESS => 'gzip -9v',
133 SUFFIX => '.gz', 235 SUFFIX => '.gz',
134 }, 236 },
135 depend => { 237 depend => {
136 "EV.c" => "EV/EVAPI.h " 238 "EV.c" => "EV/EVAPI.h "
137 . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c " 239 . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c "
138 . "libev/event.h libev/event.c libev/evdns.h libev/evdns.c", 240 . "libev/ev_vars.h libev/ev_wrap.h",
139 }, 241 },
140 INC => "-Ilibev", 242 INC => "-Ilibev",
141 DEFINE => "$DEFINE", 243 DEFINE => "$DEFINE",
142 NAME => "EV", 244 NAME => "EV",
143 LIBS => [$LIBS], 245 LIBS => [$LIBS],
246 PREREQ_PM => {
247 @anyevent,
248 },
144 VERSION_FROM => "EV.pm", 249 VERSION_FROM => "EV.pm",
145 PM => { 250 PM => {
146 'EV.pm' => '$(INST_LIBDIR)/EV.pm', 251 'EV.pm' => '$(INST_LIBDIR)/EV.pm',
147 'EV/AnyEvent.pm' => '$(INST_LIBDIR)/EV/AnyEvent.pm',
148 'EV/DNS.pm' => '$(INST_LIBDIR)/EV/DNS.pm',
149 'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h', 252 'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h',
150 'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm', 253 'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm',
151 'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h', 254 'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h',
255 'libev/ev.pod' => '$(INST_LIBDIR)/EV/libev.pod',
152 }, 256 },
257 MAN3PODS => {
258 'EV.pm' => '$(INST_MAN3DIR)/EV.$(MAN3EXT)',
259 'EV/MakeMaker.pm' => '$(INST_MAN3DIR)/EV::MakeMaker.$(MAN3EXT)',
260 'libev/ev.pod' => '$(INST_MAN3DIR)/EV::libev.$(MAN3EXT)',
261 },
153); 262);
154 263
155 264

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