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/cvs/EV/Makefile.PL
Revision: 1.57
Committed: Sat Jun 20 11:11:01 2015 UTC (8 years, 10 months ago) by root
Content type: text/plain
Branch: MAIN
CVS Tags: EV-rel-4_25, EV-rel-4_22, EV-rel-4_20, EV-rel-4_21
Changes since 1.56: +2 -2 lines
Log Message:
4.20

File Contents

# User Rev Content
1 root 1.37 use strict qw(vars subs);
2 root 1.57 use Canary::Stability EV => 1, 5.008002;
3 root 1.7 use Config;
4 root 1.1 use ExtUtils::MakeMaker;
5    
6 root 1.55 sub have_inc($) {
7     scalar grep -r "$_/$_[0]", $Config{usrinc}, split / /, $Config{incpth}
8     }
9    
10 root 1.56 my $DEFINE;
11    
12 root 1.10 unless (-e "libev/ev_epoll.c") {
13     print <<EOF;
14    
15     ***
16     *** ERROR: libev is missing or damaged. If you used a CVS check-out of EV,
17     *** you also have to check-out the "libev" module from the same CVS
18     *** repository into the EV dir (i.e. EV/libev from outside).
19     ***
20    
21     EOF
22     exit 1;
23     }
24    
25 root 1.11 print <<EOF;
26    
27 root 1.22 *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
28 root 1.11
29    
30     Welcome to EV configuration. If you are in a hurry, just press return here
31     and hope for the best. The defaults should usually do.
32    
33     EOF
34    
35     if (prompt ("Skip further questions and use defaults (y/n)?", "y") =~ /[yY]/) {
36     $ENV{PERL_MM_USE_DEFAULT} = 1;
37     }
38    
39     print <<EOF;
40    
41 root 1.22 *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
42 root 1.11
43    
44 root 1.14 POSIX optionally offers support for a monotonic clock source. EV
45 root 1.45 can take advantage of this clock source to detect time jumps more
46 root 1.14 reliably. Unfortunately, some systems are bound to be broken, so you can
47     disable this here: you can completely disable the detection and use of
48     the monotonic clock by answering 'n' here. Support for this clock type
49 root 1.29 will otherwise be autodetected at both compile- and runtime. (this setting
50     currently affects the use of nanosleep over select as well).
51 root 1.11
52     EOF
53    
54 root 1.56 unless (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/) {
55     $DEFINE .= " -DEV_USE_MONOTONIC=0";
56     }
57 root 1.11
58     print <<EOF;
59    
60 root 1.22 *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
61 root 1.11
62    
63     POSIX optionally offers support for a (potentially) high-resolution
64     realtime clock interface. In a good implementation, using it is faster
65     than the normal method of using gettimeofday. Unfortunately, this option
66 root 1.39 is also bound to be broken on some systems, and current EV versions do not
67 root 1.45 actually call gettimeofday very often, so it defaults to no.
68 root 1.11
69     EOF
70    
71 root 1.39 $DEFINE .= " -DEV_USE_REALTIME=" . (0 + (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "n") =~ /[yY]/));
72 root 1.11
73     print <<EOF;
74    
75 root 1.22 *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
76 root 1.11
77    
78 root 1.46 EV can use various backends with various portability issues. The select
79 root 1.19 backend is the most portable and makes for a good fallback, but it can be
80 root 1.22 limited to a low number of file descriptors and/or might not compile. If
81     you have problems with compiling ev_select.c, you might try to play around
82 root 1.19 with disabling it here, or forcing it to use the fd_set provided by your
83     OS, via the next question. I highly recommend keeping it in.
84    
85     EOF
86    
87     if (prompt ("Enable select backend (y/n)?", "y") =~ /[yY]/) {
88 root 1.22 $DEFINE .= " -DEV_USE_SELECT=1";
89 root 1.19
90     print <<EOF;
91    
92 root 1.22 *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
93 root 1.19
94    
95     The select backend can operate in two modes. One uses the system-provided
96     fd_set and is usually limited to 1024 file descriptors (64 on windows),
97     the other requires your header files to define NFDBITS and declare a
98     suitable fd_mask type. If you run into problems compiling ev_select.c, you
99     can try forcing the use of the system fd_set here.
100    
101     EOF
102    
103     if (prompt ("Force use of system fd_set for select backend (y/n)?", "n") =~ /[yY]/) {
104     $DEFINE .= " -DEV_SELECT_USE_FD_SET";
105 root 1.55 }
106 root 1.22 } else {
107     $DEFINE .= " -DEV_USE_SELECT=0";
108 root 1.55 }
109 root 1.19
110     print <<EOF;
111    
112 root 1.22 *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
113 root 1.19
114    
115     The second very portable backend is poll(2). It does not exist on windows
116     and various versions of Mac OS X (and on the other versions it simply
117     doesn't work), but works basically everywhere else. It is recommended to use
118     the default here unless you run into compile problems in ev_poll.c.
119    
120     EOF
121    
122 root 1.55 $DEFINE .= " -DEV_USE_POLL=" . (0 + (prompt ("Enable poll backend (y/n)?", (have_inc "poll.h") ? "y" : "n") =~ /[yY]/));
123 root 1.19
124     print <<EOF;
125    
126 root 1.22 *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
127 root 1.19
128    
129 root 1.24 Select and poll make it hard to write efficient servers, especially if the
130     number of active connections is much lower than the watched ones. GNU/Linux
131     systems have a more scalable method called "epoll", which EV can use. For
132     this to work, both your kernel and glibc have to support epoll, but if you
133     can compile it, the detection will be done at runtime, and EV will safely
134     fall back to using select when epoll isn't available. If unsure, accept
135     the default.
136 root 1.11
137     EOF
138    
139 root 1.55 my $can_epoll = have_inc "sys/epoll.h";
140 root 1.37 $can_epoll = $ENV{EV_EPOLL} if exists $ENV{EV_EPOLL};
141     $DEFINE .= " -DEV_USE_EPOLL=" . (0 + (prompt ("Enable epoll backend (y/n)?", $can_epoll ? "y" : "n") =~ /[yY]/));
142 root 1.15
143     print <<EOF;
144    
145 root 1.22 *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
146 root 1.15
147    
148 root 1.23 Similarly to the epoll backend above, EV can take advantage of kqueue on
149     many BSD systems. Support for kqueue will be detected at runtime, with a
150     safe fallback to other methods when it cannot be used.
151    
152 root 1.31 Note that kqueue is broken on most operating systems, so by default it
153     won't be used on many platforms, but you can still create your own event
154 root 1.40 loop with kqueue backend if you ask specifically for it.
155 root 1.31
156     Here is what we know:
157 root 1.23
158 root 1.45 NetBSD: partially working in at least 3.1 and later. Yeah! :)
159     FreeBSD: broken on at least 6.2-STABLE, spotty in later versions,
160 root 1.28 sockets *likely* work, ptys definitely don't.
161 root 1.23 OpenBSD: reports indicate that it likely doesn't work
162     (similar problems as on FreeBSD).
163 root 1.45 OS X: completely, utterly broken on at least <= 10.6.
164 root 1.11
165 root 1.15 EOF
166    
167 root 1.55 my $can_kqueue = have_inc "sys/event.h";
168 root 1.37 $can_kqueue = $ENV{EV_KQUEUE} if exists $ENV{EV_KQUEUE};
169 root 1.23 $DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/));
170 root 1.11
171     print <<EOF;
172    
173 root 1.22 *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
174 root 1.11
175    
176 root 1.21 Similarly to the kqueue backend above, EV can take advantage of the
177 root 1.26 solaris 10 event port interface. Support for event ports will be detected
178     at runtime, with a safe fallback to other methods when it cannot be used.
179 root 1.21
180     EOF
181    
182 root 1.55 $DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable event port backend (y/n)?", (have_inc "sys/port.h") ? "y" : "n") =~ /[yY]/));
183 root 1.21
184     print <<EOF;
185    
186 root 1.22 *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
187 root 1.21
188    
189 root 1.11 EV needs the functions pthread_atfork and clock_gettime. On most systems
190 root 1.15 you need some special libraries for this (such as -lrt and -lpthread). You
191 root 1.23 can specify additional libraries to provide these calls (and any other
192     required by EV) now, or accept the default.
193 root 1.11
194 root 1.53 On GNU/Linux systems, EV uses the LSB 3.1 __register_atfork function
195     to avoid the dependency on libpthread, and directly uses the clock_gettime
196     syscall to avoid a dependency on librt.
197    
198 root 1.11 EOF
199    
200 root 1.38 my $solaris_libs = $^O =~ /solaris/i ? "-lsocket -lnsl" : "";
201 root 1.53 my $librt = $^O =~ /linux/i ? "" : "-lpthread -lrt";
202     my $LIBS = exists $ENV{EV_LIBS} ? $ENV{EV_LIBS} : "$librt $solaris_libs";
203     $LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", $LIBS;
204 root 1.15
205 root 1.11
206     print <<EOF;
207    
208 root 1.22 *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
209 root 1.11
210    
211 root 1.25 A backend of a different kind is the Linux inotify(7) interface, which can
212     be used to speed up (and reduce resource consumption) of stat watchers. If
213 root 1.40 you have the include file and libc support for it, it is usually a good
214     idea to enable it, as kernel availability is detected at runtime.
215 root 1.25
216     EOF
217    
218 root 1.55 my $can_inotify = have_inc "sys/inotify.h";
219 root 1.37 $can_inotify = $ENV{EV_INOTIFY} if exists $ENV{EV_INOTIFY};
220 root 1.25 $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 1.36 Another useful bit of functionality is the Linux eventfd, which is useful
228     for faster signal handling (don't care) and intra-thread communications
229     (more relevant). Kernel support for this will be probed at runtime, but
230     your libc must contain the necessary wrapper. Glibc 2.7 and later should
231     have this wrapper.
232    
233     EOF
234    
235 root 1.55 my $can_eventfd = have_inc "sys/eventfd.h";
236 root 1.37 $can_eventfd = $ENV{EV_EVENTFD} if exists $ENV{EV_EVENTFD};
237     $DEFINE .= " -DEV_USE_EVENTFD=" . (0 + (prompt ("Enable linux eventfd support (y/n)?", $can_eventfd ? "y" : "n") =~ /[yY]/));
238 root 1.36
239     print <<EOF;
240    
241     *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
242    
243    
244 root 1.42 Another sometimes useful bit of functionality is the Linux signalfd, which
245     is useful for faster signal handling (don't care). Kernel support for
246     this will be probed at runtime, but your libc must contain the necessary
247 root 1.44 wrapper. Glibc 2.7 and later should have this wrapper.
248 root 1.42
249     EOF
250    
251 root 1.55 my $can_signalfd = have_inc "sys/signalfd.h";
252 root 1.42 $can_signalfd = $ENV{EV_SIGNALFD} if exists $ENV{EV_SIGNALFD};
253     $DEFINE .= " -DEV_USE_SIGNALFD=" . (0 + (prompt ("Enable linux signalfd support (y/n)?", $can_signalfd ? "y" : "n") =~ /[yY]/));
254    
255     print <<EOF;
256    
257     *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
258    
259    
260 root 1.48 Very rarely, people want to tweak EV even more, e.g. to exclude
261 root 1.52 or include certain watcher types or backends. This can be done by adding
262 root 1.48 extra -D options here, or via the EV_EXTRA_DEFS environment variable.
263 root 1.52
264     For example, if you run into compile problems because of missing memory
265     fences (or you just want extra performance), you can tell EV to not support
266     smp and threads via -DEV_NO_THREADS.
267    
268 root 1.48 Normal persons just press enter.
269    
270     EOF
271    
272 root 1.49 $DEFINE .= " " . prompt "Any extra -D options?", "$ENV{EV_EXTRA_DEFS}";
273 root 1.48
274     print <<EOF;
275    
276     *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
277    
278    
279 root 1.11 EOF
280    
281 root 1.47 my @anyevent = eval { require AnyEvent; $AnyEvent::VERSION < 5.29 } ? (AnyEvent => 5.29) : ();
282 root 1.20
283 root 1.1 WriteMakefile(
284     dist => {
285 root 1.2 PREOP => 'pod2text EV.pm | tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;',
286 root 1.1 COMPRESS => 'gzip -9v',
287     SUFFIX => '.gz',
288     },
289 root 1.10 depend => {
290 root 1.13 "EV.c" => "EV/EVAPI.h "
291 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 "
292 root 1.30 . "libev/ev_vars.h libev/ev_wrap.h",
293 root 1.10 },
294 root 1.8 INC => "-Ilibev",
295 root 1.11 DEFINE => "$DEFINE",
296 root 1.2 NAME => "EV",
297 root 1.11 LIBS => [$LIBS],
298 root 1.20 PREREQ_PM => {
299     @anyevent,
300 root 1.41 "common::sense" => 0,
301 root 1.20 },
302 root 1.57 CONFIGURE_REQUIRES => { "ExtUtils::MakeMaker" => 6.52, "Canary::Stability" => 0 },
303 root 1.2 VERSION_FROM => "EV.pm",
304 root 1.5 PM => {
305 root 1.54 'EV.pm' => '$(INST_LIB)/EV.pm',
306     'EV/EVAPI.h' => '$(INST_LIB)/EV/EVAPI.h',
307     'EV/MakeMaker.pm' => '$(INST_LIB)/EV/MakeMaker.pm',
308     'libev/ev.h' => '$(INST_LIB)/EV/ev.h',
309     'libev/ev.pod' => '$(INST_LIB)/EV/libev.pod',
310 root 1.5 },
311 root 1.34 MAN3PODS => {
312     'EV.pm' => '$(INST_MAN3DIR)/EV.$(MAN3EXT)',
313     'EV/MakeMaker.pm' => '$(INST_MAN3DIR)/EV::MakeMaker.$(MAN3EXT)',
314 root 1.35 'libev/ev.pod' => '$(INST_MAN3DIR)/EV::libev.$(MAN3EXT)',
315 root 1.34 },
316 root 1.1 );
317    
318 root 1.6