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Comparing EV/Makefile.PL (file contents):
Revision 1.37 by root, Thu Oct 30 04:01:46 2008 UTC vs.
Revision 1.62 by root, Thu Jul 11 08:51:48 2019 UTC

1use 5.006;
2
3use strict qw(vars subs); 1use strict qw(vars subs);
2use Canary::Stability EV => 1, 5.008002;
4use Config; 3use Config;
5use ExtUtils::MakeMaker; 4use ExtUtils::MakeMaker;
6 5
6sub have_inc($) {
7 scalar grep -r "$_/$_[0]", $Config{usrinc}, split / /, $Config{incpth}
8}
9
10my $DEFINE;
11
7unless (-e "libev/ev_epoll.c") { 12unless (-e "libev/ev_linuxaio.c") {
8 print <<EOF; 13 print <<EOF;
9 14
10*** 15***
11*** ERROR: libev is missing or damaged. If you used a CVS check-out of EV, 16*** 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 17*** you also have to check-out the "libev" module from the same CVS
… …
35 40
36*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 41*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
37 42
38 43
39POSIX optionally offers support for a monotonic clock source. EV 44POSIX optionally offers support for a monotonic clock source. EV
40can take advantage of this clock source to detect time jumps 45can take advantage of this clock source to detect time jumps more
41reliably. Unfortunately, some systems are bound to be broken, so you can 46reliably. Unfortunately, some systems are bound to be broken, so you can
42disable this here: you can completely disable the detection and use of 47disable this here: you can completely disable the detection and use of
43the monotonic clock by answering 'n' here. Support for this clock type 48the monotonic clock by answering 'n' here. Support for this clock type
44will otherwise be autodetected at both compile- and runtime. (this setting 49will otherwise be autodetected at both compile- and runtime. (this setting
45currently affects the use of nanosleep over select as well). 50currently affects the use of nanosleep over select as well).
46 51
47EOF 52EOF
48 53
49my $DEFINE .= " -DEV_USE_MONOTONIC=" . (0 + (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/)); 54unless (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/) {
55 $DEFINE .= " -DEV_USE_MONOTONIC=0";
56}
50 57
51print <<EOF; 58print <<EOF;
52 59
53*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 60*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
54 61
55 62
56POSIX optionally offers support for a (potentially) high-resolution 63POSIX optionally offers support for a (potentially) high-resolution
57realtime clock interface. In a good implementation, using it is faster 64realtime clock interface. In a good implementation, using it is faster
58than the normal method of using gettimeofday. Unfortunately, this option 65than the normal method of using gettimeofday. Unfortunately, this option
59is also bound to be broken on some systems, so you can disable use and 66is also bound to be broken on some systems, and current EV versions do not
60probing of this feature altogether here. Otherwise support for this clock 67actually call gettimeofday very often, so it defaults to no.
61type will be autodetected at compiletime.
62 68
63EOF 69EOF
64 70
65$DEFINE .= " -DEV_USE_REALTIME=" . (0 + (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "y") =~ /[yY]/)); 71$DEFINE .= " -DEV_USE_REALTIME=" . (0 + (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "n") =~ /[yY]/));
66 72
67print <<EOF; 73print <<EOF;
68 74
69*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 75*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
70 76
71 77
72EV can use various backends with various portability issue. The select 78EV can use various backends with various portability issues. The select
73backend is the most portable and makes for a good fallback, but it can be 79backend is the most portable and makes for a good fallback, but it can be
74limited to a low number of file descriptors and/or might not compile. If 80limited to a low number of file descriptors and/or might not compile. If
75you have problems with compiling ev_select.c, you might try to play around 81you have problems with compiling ev_select.c, you might try to play around
76with disabling it here, or forcing it to use the fd_set provided by your 82with disabling it here, or forcing it to use the fd_set provided by your
77OS, via the next question. I highly recommend keeping it in. 83OS, via the next question. I highly recommend keeping it in.
… …
94 100
95EOF 101EOF
96 102
97 if (prompt ("Force use of system fd_set for select backend (y/n)?", "n") =~ /[yY]/) { 103 if (prompt ("Force use of system fd_set for select backend (y/n)?", "n") =~ /[yY]/) {
98 $DEFINE .= " -DEV_SELECT_USE_FD_SET"; 104 $DEFINE .= " -DEV_SELECT_USE_FD_SET";
99 } 105 }
100} else { 106} else {
101 $DEFINE .= " -DEV_USE_SELECT=0"; 107 $DEFINE .= " -DEV_USE_SELECT=0";
102} 108}
103 109
104print <<EOF; 110print <<EOF;
105 111
106*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 112*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
107 113
… …
111doesn't work), but works basically everywhere else. It is recommended to use 117doesn't work), but works basically everywhere else. It is recommended to use
112the default here unless you run into compile problems in ev_poll.c. 118the default here unless you run into compile problems in ev_poll.c.
113 119
114EOF 120EOF
115 121
116$DEFINE .= " -DEV_USE_POLL=" . (0 + (prompt ("Enable poll backend (y/n)?", (-e "/usr/include/poll.h") ? "y" : "n") =~ /[yY]/)); 122$DEFINE .= " -DEV_USE_POLL=" . (0 + (prompt ("Enable poll backend (y/n)?", (have_inc "poll.h") ? "y" : "n") =~ /[yY]/));
117 123
118print <<EOF; 124print <<EOF;
119 125
120*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 126*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
121 127
… …
128fall back to using select when epoll isn't available. If unsure, accept 134fall back to using select when epoll isn't available. If unsure, accept
129the default. 135the default.
130 136
131EOF 137EOF
132 138
133my $can_epoll = -e "/usr/include/sys/epoll.h"; 139my $can_epoll = have_inc "sys/epoll.h";
134$can_epoll = $ENV{EV_EPOLL} if exists $ENV{EV_EPOLL}; 140$can_epoll = $ENV{EV_EPOLL} if exists $ENV{EV_EPOLL};
135$DEFINE .= " -DEV_USE_EPOLL=" . (0 + (prompt ("Enable epoll backend (y/n)?", $can_epoll ? "y" : "n") =~ /[yY]/)); 141$DEFINE .= " -DEV_USE_EPOLL=" . (0 + (prompt ("Enable epoll backend (y/n)?", $can_epoll ? "y" : "n") =~ /[yY]/));
142
143print <<EOF;
144
145*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
146
147
148Linux 4.18 introduced another event polling interface, this time using
149the Linux AIO API. While this API is far superior to epoll and almost
150rivals kqueue, it also suffers from the same issues as kqueue typically
151does: only a subset of file types are supported (as of 4.19, I have seen
152eventfd, pipes, sockets files and some devices, but no ttys). It also
153is subject arbitrary system-wide limits imposed on it. Therefore, this
154backend is not used by default, even when it is compiled in, and you have
155to request it explicitly, e.g. with LIBEV_FLAGS=64. If unsure, accept the
156default.
157
158EOF
159
160my $can_linuxaio = have_inc "linux/aio_abi.h";
161$can_linuxaio = $ENV{EV_LINUXAIO} if exists $ENV{EV_LINUXAIO};
162$can_linuxaio = 0 + (prompt ("Enable linux aio backend (y/n)?", $can_linuxaio ? "y" : "n") =~ /[yY]/);
163$DEFINE .= " -DEV_USE_LINUXAIO=$can_linuxaio";
164
165if ($can_linuxaio) {
166print <<EOF;
167
168*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
169
170
171The previously mentioned Linux AIO backend is experimental and will not
172be used unless requested explicitly. You can, howeer, choose to make ti a
173recommended basckend, which means it will be chosen if available even when
174not explicitly asked for, in preference to epoll on GNU/Linux. This option
175is likely temporary. When unsure, accept the default.
176
177EOF
178
179my $recommend_linuxaio = 0;
180$recommend_linuxaio = $ENV{EV_RECOMMEND_LINUXAIO} if exists $ENV{EV_RECOMMEND_LINUXAIO};
181$recommend_linuxaio = 0 + (prompt ("Treat linux aio as a recommended backend (y/n)?", $recommend_linuxaio ? "y" : "n") =~ /[yY]/);
182$DEFINE .= " -DEV_RECOMMEND_LINUXAIO=$recommend_linuxaio";
183}
136 184
137print <<EOF; 185print <<EOF;
138 186
139*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 187*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
140 188
… …
143many BSD systems. Support for kqueue will be detected at runtime, with a 191many BSD systems. Support for kqueue will be detected at runtime, with a
144safe fallback to other methods when it cannot be used. 192safe fallback to other methods when it cannot be used.
145 193
146Note that kqueue is broken on most operating systems, so by default it 194Note that kqueue is broken on most operating systems, so by default it
147won't be used on many platforms, but you can still create your own event 195won't be used on many platforms, but you can still create your own event
148loop with kqueue backend. 196loop with kqueue backend if you ask specifically for it.
149 197
150Here is what we know: 198Here is what we know:
151 199
152NetBSD: partially working in at least 3.1. Yeah! :) 200NetBSD: partially working in at least 3.1 and later. Yeah! :)
153FreeBSD: broken on at least 6.2-STABLE, 201FreeBSD: broken on at least 6.2-STABLE, spotty in later versions,
154 sockets *likely* work, ptys definitely don't. 202 sockets *likely* work, ptys definitely don't.
155OpenBSD: reports indicate that it likely doesn't work 203OpenBSD: reports indicate that it likely doesn't work
156 (similar problems as on FreeBSD). 204 (similar problems as on FreeBSD).
157OS X: completely, utterly broken on at least < 10.5. 205OS X: completely, utterly broken on at least <= 10.6.
158 206
159EOF 207EOF
160 208
161my $can_kqueue = -e "/usr/include/sys/event.h"; 209my $can_kqueue = have_inc "sys/event.h";
162$can_kqueue = $ENV{EV_KQUEUE} if exists $ENV{EV_KQUEUE}; 210$can_kqueue = $ENV{EV_KQUEUE} if exists $ENV{EV_KQUEUE};
163$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/)); 211$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/));
164 212
165print <<EOF; 213print <<EOF;
166 214
… …
171solaris 10 event port interface. Support for event ports will be detected 219solaris 10 event port interface. Support for event ports will be detected
172at runtime, with a safe fallback to other methods when it cannot be used. 220at runtime, with a safe fallback to other methods when it cannot be used.
173 221
174EOF 222EOF
175 223
176$DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable event port backend (y/n)?", (-e "/usr/include/sys/port.h") ? "y" : "n") =~ /[yY]/)); 224$DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable event port backend (y/n)?", (have_inc "sys/port.h") ? "y" : "n") =~ /[yY]/));
177 225
178print <<EOF; 226print <<EOF;
179 227
180*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 228*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
181 229
… …
183EV needs the functions pthread_atfork and clock_gettime. On most systems 231EV needs the functions pthread_atfork and clock_gettime. On most systems
184you need some special libraries for this (such as -lrt and -lpthread). You 232you need some special libraries for this (such as -lrt and -lpthread). You
185can specify additional libraries to provide these calls (and any other 233can specify additional libraries to provide these calls (and any other
186required by EV) now, or accept the default. 234required by EV) now, or accept the default.
187 235
188EOF 236On GNU/Linux systems, EV uses the LSB 3.1 __register_atfork function
237to avoid the dependency on libpthread, and directly uses the clock_gettime
238syscall to avoid a dependency on librt.
189 239
240EOF
241
190my $solaris_libs = $^O =~ /solaris/ ? " -lsocket -lnsl" : ""; 242my $solaris_libs = $^O =~ /solaris/i ? "-lsocket -lnsl" : "";
243my $librt = $^O =~ /linux/i ? "" : "-lpthread -lrt";
244my $LIBS = exists $ENV{EV_LIBS} ? $ENV{EV_LIBS} : "$librt $solaris_libs";
191my $LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "-lpthread -lrt$solaris_libs"; 245$LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", $LIBS;
192 246
193 247
194print <<EOF; 248print <<EOF;
195 249
196*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 250*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
197 251
198 252
199A backend of a different kind is the Linux inotify(7) interface, which can 253A 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 254be used to speed up (and reduce resource consumption) of stat watchers. If
201you have it, it is usually a good idea to enable it. 255you have the include file and libc support for it, it is usually a good
256idea to enable it, as kernel availability is detected at runtime.
202 257
203EOF 258EOF
204 259
205my $can_inotify = -e "/usr/include/sys/inotify.h"; 260my $can_inotify = have_inc "sys/inotify.h";
206$can_inotify = $ENV{EV_INOTIFY} if exists $ENV{EV_INOTIFY}; 261$can_inotify = $ENV{EV_INOTIFY} if exists $ENV{EV_INOTIFY};
207$DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/)); 262$DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/));
208 263
209print <<EOF; 264print <<EOF;
210 265
… …
217your libc must contain the necessary wrapper. Glibc 2.7 and later should 272your libc must contain the necessary wrapper. Glibc 2.7 and later should
218have this wrapper. 273have this wrapper.
219 274
220EOF 275EOF
221 276
222my $can_eventfd = -e "/usr/include/sys/eventfd.h"; 277my $can_eventfd = have_inc "sys/eventfd.h";
223$can_eventfd = $ENV{EV_EVENTFD} if exists $ENV{EV_EVENTFD}; 278$can_eventfd = $ENV{EV_EVENTFD} if exists $ENV{EV_EVENTFD};
224$DEFINE .= " -DEV_USE_EVENTFD=" . (0 + (prompt ("Enable linux eventfd support (y/n)?", $can_eventfd ? "y" : "n") =~ /[yY]/)); 279$DEFINE .= " -DEV_USE_EVENTFD=" . (0 + (prompt ("Enable linux eventfd support (y/n)?", $can_eventfd ? "y" : "n") =~ /[yY]/));
225 280
226print <<EOF; 281print <<EOF;
227 282
228*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 283*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
229 284
230 285
231EOF 286Another sometimes useful bit of functionality is the Linux signalfd, which
287is useful for faster signal handling (don't care). Kernel support for
288this will be probed at runtime, but your libc must contain the necessary
289wrapper. Glibc 2.7 and later should have this wrapper.
232 290
291EOF
292
293my $can_signalfd = have_inc "sys/signalfd.h";
294$can_signalfd = $ENV{EV_SIGNALFD} if exists $ENV{EV_SIGNALFD};
295$DEFINE .= " -DEV_USE_SIGNALFD=" . (0 + (prompt ("Enable linux signalfd support (y/n)?", $can_signalfd ? "y" : "n") =~ /[yY]/));
296
297print <<EOF;
298
299*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
300
301
302Libev contains numerous internal assert() invocations to check for
303consistency and user errors. These are normally enabled, but most
304perl builds disable this error reporting mechanism by default. You
305can re-enable these asserts here. Enabling them might help you catch
306programming bugs earlier, but might cause a small slowdown. Also, failures
307will be reported by aboritng your program, instead of throwing a perl
308exception.
309
310If unsure, enable this if you only use this perl installation for
311development, and leave it off for use in production environments.
312
313EOF
314
315my $enable_assertions = 0;
316$enable_assertions = 0 + (prompt ("Make sure assertions are enabled? (y/n)?", $enable_assertions ? "y" : "n") =~ /[yY]/);
317$DEFINE .= " -DEV_ENABLE_ASERTIONS=1" if $enable_assertions;
318
319print <<EOF;
320
321*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
322
323
324Very rarely, people want to tweak EV even more, e.g. to exclude
325or include certain watcher types or backends. This can be done by adding
326extra -D options here, or via the EV_EXTRA_DEFS environment variable.
327
328For example, if you run into compile problems because of missing memory
329fences (or you just want extra performance), you can tell EV to not support
330smp and threads via -DEV_NO_THREADS.
331
332Normal persons just press enter.
333
334EOF
335
336$DEFINE .= " " . prompt "Any extra -D options?", "$ENV{EV_EXTRA_DEFS}";
337
338print <<EOF;
339
340*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
341
342
343EOF
344
233my @anyevent = eval { require AnyEvent; $AnyEvent::VERSION < 2.6 } ? (AnyEvent => 2.6) : (); 345my @anyevent = eval { require AnyEvent; $AnyEvent::VERSION < 5.29 } ? (AnyEvent => 5.29) : ();
234 346
235WriteMakefile( 347WriteMakefile(
236 dist => { 348 dist => {
237 PREOP => 'pod2text EV.pm | tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;', 349 PREOP => 'pod2text EV.pm | tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;',
238 COMPRESS => 'gzip -9v', 350 COMPRESS => 'gzip -9v',
239 SUFFIX => '.gz', 351 SUFFIX => '.gz',
240 }, 352 },
241 depend => { 353 depend => {
242 "EV.c" => "EV/EVAPI.h " 354 "EV.c" => "EV/EVAPI.h "
243 . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c " 355 . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c libev/ev_linuxaio.c "
244 . "libev/ev_vars.h libev/ev_wrap.h", 356 . "libev/ev_vars.h libev/ev_wrap.h",
245 }, 357 },
246 INC => "-Ilibev", 358 INC => "-Ilibev",
247 DEFINE => "$DEFINE", 359 DEFINE => "$DEFINE",
248 NAME => "EV", 360 NAME => "EV",
249 LIBS => [$LIBS], 361 LIBS => [$LIBS],
250 PREREQ_PM => { 362 PREREQ_PM => {
251 @anyevent, 363 @anyevent,
364 "common::sense" => 0,
252 }, 365 },
366 CONFIGURE_REQUIRES => { "ExtUtils::MakeMaker" => 6.52, "Canary::Stability" => 0 },
253 VERSION_FROM => "EV.pm", 367 VERSION_FROM => "EV.pm",
254 PM => { 368 PM => {
255 'EV.pm' => '$(INST_LIBDIR)/EV.pm', 369 'EV.pm' => '$(INST_LIB)/EV.pm',
256 'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h', 370 'EV/EVAPI.h' => '$(INST_LIB)/EV/EVAPI.h',
257 'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm', 371 'EV/MakeMaker.pm' => '$(INST_LIB)/EV/MakeMaker.pm',
258 'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h', 372 'libev/ev.h' => '$(INST_LIB)/EV/ev.h',
259 'libev/ev.pod' => '$(INST_LIBDIR)/EV/libev.pod', 373 'libev/ev.pod' => '$(INST_LIB)/EV/libev.pod',
260 }, 374 },
261 MAN3PODS => { 375 MAN3PODS => {
262 'EV.pm' => '$(INST_MAN3DIR)/EV.$(MAN3EXT)', 376 'EV.pm' => '$(INST_MAN3DIR)/EV.$(MAN3EXT)',
263 'EV/MakeMaker.pm' => '$(INST_MAN3DIR)/EV::MakeMaker.$(MAN3EXT)', 377 'EV/MakeMaker.pm' => '$(INST_MAN3DIR)/EV::MakeMaker.$(MAN3EXT)',
264 'libev/ev.pod' => '$(INST_MAN3DIR)/EV::libev.$(MAN3EXT)', 378 'libev/ev.pod' => '$(INST_MAN3DIR)/EV::libev.$(MAN3EXT)',
265 }, 379 },
266); 380);
267 381
268

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