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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 1.40 by root, Wed Jun 10 00:52:21 2009 UTC

1use 5.006; 1use 5.006;
2 2
3use strict qw(vars subs);
3use Config; 4use Config;
4use ExtUtils::MakeMaker; 5use ExtUtils::MakeMaker;
5
6 6
7unless (-e "libev/ev_epoll.c") { 7unless (-e "libev/ev_epoll.c") {
8 print <<EOF; 8 print <<EOF;
9 9
10*** 10***
… …
17 exit 1; 17 exit 1;
18} 18}
19 19
20print <<EOF; 20print <<EOF;
21 21
22
23*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 22*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
23
24 24
25Welcome to EV configuration. If you are in a hurry, just press return here 25Welcome to EV configuration. If you are in a hurry, just press return here
26and hope for the best. The defaults should usually do. 26and hope for the best. The defaults should usually do.
27 27
28EOF 28EOF
… …
31 $ENV{PERL_MM_USE_DEFAULT} = 1; 31 $ENV{PERL_MM_USE_DEFAULT} = 1;
32} 32}
33 33
34print <<EOF; 34print <<EOF;
35 35
36
37*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 36*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
37
38 38
39POSIX optionally offers support for a monotonic clock source. EV 39POSIX optionally offers support for a monotonic clock source. EV
40can take advantage of this clock source to detect time jumps 40can take advantage of this clock source to detect time jumps
41reliably. Unfortunately, some systems are bound to be broken, so you can 41reliably. Unfortunately, some systems are bound to be broken, so you can
42disable this here: you can completely disable the detection and use of 42disable this here: you can completely disable the detection and use of
43the monotonic clock by answering 'n' here. Support for this clock type 43the monotonic clock by answering 'n' here. Support for this clock type
44will otherwise be autodetected at both compile- and runtime. 44will otherwise be autodetected at both compile- and runtime. (this setting
45currently affects the use of nanosleep over select as well).
45 46
46EOF 47EOF
47 48
48if (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/) { 49my $DEFINE .= " -DEV_USE_MONOTONIC=" . (0 + (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/));
49 $DEFINE .= " -DEV_USE_MONOTONIC";
50}
51 50
52print <<EOF; 51print <<EOF;
53 52
54
55*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 53*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
54
56 55
57POSIX optionally offers support for a (potentially) high-resolution 56POSIX optionally offers support for a (potentially) high-resolution
58realtime clock interface. In a good implementation, using it is faster 57realtime clock interface. In a good implementation, using it is faster
59than the normal method of using gettimeofday. Unfortunately, this option 58than the normal method of using gettimeofday. Unfortunately, this option
60is also bound to be broken on some systems, so you can disable use and 59is also bound to be broken on some systems, and current EV versions do not
61probing of this feature altogether here. Otherwise support for this clock 60actually call C<gettimeofday> very often, so ti defaults to no.
62type will be autodetected at compiletime.
63 61
64EOF 62EOF
65 63
66if (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "y") !~ /[yY]/) { 64$DEFINE .= " -DEV_USE_REALTIME=" . (0 + (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "n") =~ /[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
132my $can_epoll = -e "/usr/include/sys/epoll.h";
133$can_epoll = $ENV{EV_EPOLL} if exists $ENV{EV_EPOLL};
134$DEFINE .= " -DEV_USE_EPOLL=" . (0 + (prompt ("Enable epoll backend (y/n)?", $can_epoll ? "y" : "n") =~ /[yY]/));
135
136print <<EOF;
137
138*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
139
93 140
94Similarly to the epoll backend above, EV can take advantage of kqueue on 141Similarly 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 142many BSD systems. Support for kqueue will be detected at runtime, with a
99safe fallback to other methods when it cannot be used. 143safe fallback to other methods when it cannot be used.
100 144
101EOF 145Note that kqueue is broken on most operating systems, so by default it
146won't be used on many platforms, but you can still create your own event
147loop with kqueue backend if you ask specifically for it.
102 148
103if (prompt ("Enable kqueue backend (y/n)?", (-e "/usr/include/sys/event.h") ? "y" : "n") =~ /[yY]/) { 149Here is what we know:
104 $DEFINE .= " -DEV_USE_KQUEUE";
105}
106 150
107print <<EOF; 151NetBSD: partially working in at least 3.1. Yeah! :)
152FreeBSD: broken on at least 6.2-STABLE,
153 sockets *likely* work, ptys definitely don't.
154OpenBSD: reports indicate that it likely doesn't work
155 (similar problems as on FreeBSD).
156OS X: completely, utterly broken on at least < 10.5.
108 157
158EOF
109 159
160my $can_kqueue = -e "/usr/include/sys/event.h";
161$can_kqueue = $ENV{EV_KQUEUE} if exists $ENV{EV_KQUEUE};
162$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/));
163
164print <<EOF;
165
110*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 166*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
167
168
169Similarly to the kqueue backend above, EV can take advantage of the
170solaris 10 event port interface. Support for event ports will be detected
171at runtime, with a safe fallback to other methods when it cannot be used.
172
173EOF
174
175$DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable event port backend (y/n)?", (-e "/usr/include/sys/port.h") ? "y" : "n") =~ /[yY]/));
176
177print <<EOF;
178
179*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
180
111 181
112EV needs the functions pthread_atfork and clock_gettime. On most systems 182EV needs the functions pthread_atfork and clock_gettime. On most systems
113you need some special libraries for this (such as -lrt and -lpthread). You 183you need some special libraries for this (such as -lrt and -lpthread). You
114can specify additional libraries to provide these calls now, or accept the 184can specify additional libraries to provide these calls (and any other
115default. 185required by EV) now, or accept the default.
116 186
117EOF 187EOF
118 188
189my $solaris_libs = $^O =~ /solaris/i ? "-lsocket -lnsl" : "";
190my $librt = $^O =~ /linux/i ? "-lpthread" : "-lpthread -lrt";
119$LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "-lpthread -lrt"; 191my $LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "$librt $solaris_libs";
120 192
121 193
122print <<EOF; 194print <<EOF;
123 195
124
125*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 196*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
126 197
198
199A backend of a different kind is the Linux inotify(7) interface, which can
200be used to speed up (and reduce resource consumption) of stat watchers. If
201you have the include file and libc support for it, it is usually a good
202idea to enable it, as kernel availability is detected at runtime.
203
127EOF 204EOF
205
206my $can_inotify = -e "/usr/include/sys/inotify.h";
207$can_inotify = $ENV{EV_INOTIFY} if exists $ENV{EV_INOTIFY};
208$DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/));
209
210print <<EOF;
211
212*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
213
214
215Another useful bit of functionality is the Linux eventfd, which is useful
216for faster signal handling (don't care) and intra-thread communications
217(more relevant). Kernel support for this will be probed at runtime, but
218your libc must contain the necessary wrapper. Glibc 2.7 and later should
219have this wrapper.
220
221EOF
222
223my $can_eventfd = -e "/usr/include/sys/eventfd.h";
224$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
227print <<EOF;
228
229*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
230
231
232EOF
233
234my @anyevent = eval { require AnyEvent; $AnyEvent::VERSION < 2.6 } ? (AnyEvent => 2.6) : ();
128 235
129WriteMakefile( 236WriteMakefile(
130 dist => { 237 dist => {
131 PREOP => 'pod2text EV.pm | tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;', 238 PREOP => 'pod2text EV.pm | tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;',
132 COMPRESS => 'gzip -9v', 239 COMPRESS => 'gzip -9v',
133 SUFFIX => '.gz', 240 SUFFIX => '.gz',
134 }, 241 },
135 depend => { 242 depend => {
136 "EV.c" => "EV/EVAPI.h " 243 "EV.c" => "EV/EVAPI.h "
137 . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c " 244 . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c "
138 . "libev/event.h libev/event.c libev/evdns.h libev/evdns.c", 245 . "libev/ev_vars.h libev/ev_wrap.h",
139 }, 246 },
140 INC => "-Ilibev", 247 INC => "-Ilibev",
141 DEFINE => "$DEFINE", 248 DEFINE => "$DEFINE",
142 NAME => "EV", 249 NAME => "EV",
143 LIBS => [$LIBS], 250 LIBS => [$LIBS],
251 PREREQ_PM => {
252 @anyevent,
253 },
144 VERSION_FROM => "EV.pm", 254 VERSION_FROM => "EV.pm",
145 PM => { 255 PM => {
146 'EV.pm' => '$(INST_LIBDIR)/EV.pm', 256 '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', 257 'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h',
150 'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm', 258 'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm',
151 'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h', 259 'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h',
260 'libev/ev.pod' => '$(INST_LIBDIR)/EV/libev.pod',
152 }, 261 },
262 MAN3PODS => {
263 'EV.pm' => '$(INST_MAN3DIR)/EV.$(MAN3EXT)',
264 'EV/MakeMaker.pm' => '$(INST_MAN3DIR)/EV::MakeMaker.$(MAN3EXT)',
265 'libev/ev.pod' => '$(INST_MAN3DIR)/EV::libev.$(MAN3EXT)',
266 },
153); 267);
154 268
155 269

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