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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 1.58 by root, Sat Jun 22 15:50:36 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;
5
6sub have_inc($) {
7 scalar grep -r "$_/$_[0]", $Config{usrinc}, split / /, $Config{incpth}
8}
9
10my $DEFINE;
6 11
7unless (-e "libev/ev_epoll.c") { 12unless (-e "libev/ev_epoll.c") {
8 print <<EOF; 13 print <<EOF;
9 14
10*** 15***
… …
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 or die;
162$can_linuxaio = $ENV{EV_LINUXAIO} if exists $ENV{EV_LINUXAIO};
163$DEFINE .= " -DEV_USE_LINUXAIO=" . (0 + (prompt ("Enable linux aio backend (y/n)?", $can_linuxaio ? "y" : "n") =~ /[yY]/));
136 164
137print <<EOF; 165print <<EOF;
138 166
139*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 167*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
140 168
… …
143many BSD systems. Support for kqueue will be detected at runtime, with a 171many BSD systems. Support for kqueue will be detected at runtime, with a
144safe fallback to other methods when it cannot be used. 172safe fallback to other methods when it cannot be used.
145 173
146Note that kqueue is broken on most operating systems, so by default it 174Note 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 175won't be used on many platforms, but you can still create your own event
148loop with kqueue backend. 176loop with kqueue backend if you ask specifically for it.
149 177
150Here is what we know: 178Here is what we know:
151 179
152NetBSD: partially working in at least 3.1. Yeah! :) 180NetBSD: partially working in at least 3.1 and later. Yeah! :)
153FreeBSD: broken on at least 6.2-STABLE, 181FreeBSD: broken on at least 6.2-STABLE, spotty in later versions,
154 sockets *likely* work, ptys definitely don't. 182 sockets *likely* work, ptys definitely don't.
155OpenBSD: reports indicate that it likely doesn't work 183OpenBSD: reports indicate that it likely doesn't work
156 (similar problems as on FreeBSD). 184 (similar problems as on FreeBSD).
157OS X: completely, utterly broken on at least < 10.5. 185OS X: completely, utterly broken on at least <= 10.6.
158 186
159EOF 187EOF
160 188
161my $can_kqueue = -e "/usr/include/sys/event.h"; 189my $can_kqueue = have_inc "sys/event.h";
162$can_kqueue = $ENV{EV_KQUEUE} if exists $ENV{EV_KQUEUE}; 190$can_kqueue = $ENV{EV_KQUEUE} if exists $ENV{EV_KQUEUE};
163$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/)); 191$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/));
164 192
165print <<EOF; 193print <<EOF;
166 194
… …
171solaris 10 event port interface. Support for event ports will be detected 199solaris 10 event port interface. Support for event ports will be detected
172at runtime, with a safe fallback to other methods when it cannot be used. 200at runtime, with a safe fallback to other methods when it cannot be used.
173 201
174EOF 202EOF
175 203
176$DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable event port backend (y/n)?", (-e "/usr/include/sys/port.h") ? "y" : "n") =~ /[yY]/)); 204$DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable event port backend (y/n)?", (have_inc "sys/port.h") ? "y" : "n") =~ /[yY]/));
177 205
178print <<EOF; 206print <<EOF;
179 207
180*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 208*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
181 209
… …
183EV needs the functions pthread_atfork and clock_gettime. On most systems 211EV needs the functions pthread_atfork and clock_gettime. On most systems
184you need some special libraries for this (such as -lrt and -lpthread). You 212you need some special libraries for this (such as -lrt and -lpthread). You
185can specify additional libraries to provide these calls (and any other 213can specify additional libraries to provide these calls (and any other
186required by EV) now, or accept the default. 214required by EV) now, or accept the default.
187 215
188EOF 216On GNU/Linux systems, EV uses the LSB 3.1 __register_atfork function
217to avoid the dependency on libpthread, and directly uses the clock_gettime
218syscall to avoid a dependency on librt.
189 219
220EOF
221
190my $solaris_libs = $^O =~ /solaris/ ? " -lsocket -lnsl" : ""; 222my $solaris_libs = $^O =~ /solaris/i ? "-lsocket -lnsl" : "";
223my $librt = $^O =~ /linux/i ? "" : "-lpthread -lrt";
224my $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"; 225$LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", $LIBS;
192 226
193 227
194print <<EOF; 228print <<EOF;
195 229
196*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 230*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
197 231
198 232
199A backend of a different kind is the Linux inotify(7) interface, which can 233A 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 234be used to speed up (and reduce resource consumption) of stat watchers. If
201you have it, it is usually a good idea to enable it. 235you have the include file and libc support for it, it is usually a good
236idea to enable it, as kernel availability is detected at runtime.
202 237
203EOF 238EOF
204 239
205my $can_inotify = -e "/usr/include/sys/inotify.h"; 240my $can_inotify = have_inc "sys/inotify.h";
206$can_inotify = $ENV{EV_INOTIFY} if exists $ENV{EV_INOTIFY}; 241$can_inotify = $ENV{EV_INOTIFY} if exists $ENV{EV_INOTIFY};
207$DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/)); 242$DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/));
208 243
209print <<EOF; 244print <<EOF;
210 245
… …
217your libc must contain the necessary wrapper. Glibc 2.7 and later should 252your libc must contain the necessary wrapper. Glibc 2.7 and later should
218have this wrapper. 253have this wrapper.
219 254
220EOF 255EOF
221 256
222my $can_eventfd = -e "/usr/include/sys/eventfd.h"; 257my $can_eventfd = have_inc "sys/eventfd.h";
223$can_eventfd = $ENV{EV_EVENTFD} if exists $ENV{EV_EVENTFD}; 258$can_eventfd = $ENV{EV_EVENTFD} if exists $ENV{EV_EVENTFD};
224$DEFINE .= " -DEV_USE_EVENTFD=" . (0 + (prompt ("Enable linux eventfd support (y/n)?", $can_eventfd ? "y" : "n") =~ /[yY]/)); 259$DEFINE .= " -DEV_USE_EVENTFD=" . (0 + (prompt ("Enable linux eventfd support (y/n)?", $can_eventfd ? "y" : "n") =~ /[yY]/));
225 260
226print <<EOF; 261print <<EOF;
227 262
228*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 263*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
229 264
230 265
231EOF 266Another sometimes useful bit of functionality is the Linux signalfd, which
267is useful for faster signal handling (don't care). Kernel support for
268this will be probed at runtime, but your libc must contain the necessary
269wrapper. Glibc 2.7 and later should have this wrapper.
232 270
271EOF
272
273my $can_signalfd = have_inc "sys/signalfd.h";
274$can_signalfd = $ENV{EV_SIGNALFD} if exists $ENV{EV_SIGNALFD};
275$DEFINE .= " -DEV_USE_SIGNALFD=" . (0 + (prompt ("Enable linux signalfd support (y/n)?", $can_signalfd ? "y" : "n") =~ /[yY]/));
276
277print <<EOF;
278
279*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
280
281
282Very rarely, people want to tweak EV even more, e.g. to exclude
283or include certain watcher types or backends. This can be done by adding
284extra -D options here, or via the EV_EXTRA_DEFS environment variable.
285
286For example, if you run into compile problems because of missing memory
287fences (or you just want extra performance), you can tell EV to not support
288smp and threads via -DEV_NO_THREADS.
289
290Normal persons just press enter.
291
292EOF
293
294$DEFINE .= " " . prompt "Any extra -D options?", "$ENV{EV_EXTRA_DEFS}";
295
296print <<EOF;
297
298*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
299
300
301EOF
302
233my @anyevent = eval { require AnyEvent; $AnyEvent::VERSION < 2.6 } ? (AnyEvent => 2.6) : (); 303my @anyevent = eval { require AnyEvent; $AnyEvent::VERSION < 5.29 } ? (AnyEvent => 5.29) : ();
234 304
235WriteMakefile( 305WriteMakefile(
236 dist => { 306 dist => {
237 PREOP => 'pod2text EV.pm | tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;', 307 PREOP => 'pod2text EV.pm | tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;',
238 COMPRESS => 'gzip -9v', 308 COMPRESS => 'gzip -9v',
… …
247 DEFINE => "$DEFINE", 317 DEFINE => "$DEFINE",
248 NAME => "EV", 318 NAME => "EV",
249 LIBS => [$LIBS], 319 LIBS => [$LIBS],
250 PREREQ_PM => { 320 PREREQ_PM => {
251 @anyevent, 321 @anyevent,
322 "common::sense" => 0,
252 }, 323 },
324 CONFIGURE_REQUIRES => { "ExtUtils::MakeMaker" => 6.52, "Canary::Stability" => 0 },
253 VERSION_FROM => "EV.pm", 325 VERSION_FROM => "EV.pm",
254 PM => { 326 PM => {
255 'EV.pm' => '$(INST_LIBDIR)/EV.pm', 327 'EV.pm' => '$(INST_LIB)/EV.pm',
256 'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h', 328 'EV/EVAPI.h' => '$(INST_LIB)/EV/EVAPI.h',
257 'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm', 329 'EV/MakeMaker.pm' => '$(INST_LIB)/EV/MakeMaker.pm',
258 'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h', 330 'libev/ev.h' => '$(INST_LIB)/EV/ev.h',
259 'libev/ev.pod' => '$(INST_LIBDIR)/EV/libev.pod', 331 'libev/ev.pod' => '$(INST_LIB)/EV/libev.pod',
260 }, 332 },
261 MAN3PODS => { 333 MAN3PODS => {
262 'EV.pm' => '$(INST_MAN3DIR)/EV.$(MAN3EXT)', 334 'EV.pm' => '$(INST_MAN3DIR)/EV.$(MAN3EXT)',
263 'EV/MakeMaker.pm' => '$(INST_MAN3DIR)/EV::MakeMaker.$(MAN3EXT)', 335 'EV/MakeMaker.pm' => '$(INST_MAN3DIR)/EV::MakeMaker.$(MAN3EXT)',
264 'libev/ev.pod' => '$(INST_MAN3DIR)/EV::libev.$(MAN3EXT)', 336 'libev/ev.pod' => '$(INST_MAN3DIR)/EV::libev.$(MAN3EXT)',

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