[ViewVC] Diff of: cvs/EV/Makefile.PL

Comparing EV/Makefile.PL (file contents):
Revision 1.5 by root, Mon Oct 29 08:48:07 2007 UTC vs.
Revision 1.61 by root, Tue Jun 25 23:57:23 2019 UTC

1	use 5.006;	1	use strict qw(vars subs);
2		2	use Canary::Stability EV => 1, 5.008002;
		3	use Config;
3	use ExtUtils::MakeMaker;	4	use ExtUtils::MakeMaker;
4		5
		6	sub have_inc($) {
		7	scalar grep -r "$_/$_[0]", $Config{usrinc}, split / /, $Config{incpth}
		8	}
		9
		10	my $DEFINE;
		11
		12	unless (-e "libev/ev_linuxaio.c") {
5	print <<EOF;	13	print <<EOF;
6		14
7	***	15	***
8	*** You need to install libevent (http://monkey.org/~provos/libevent/) separately	16	*** ERROR: libev is missing or damaged. If you used a CVS check-out of EV,
9	*** first in a way so that the Makefile.PL can find both -levent and the event.h	17	*** you also have to check-out the "libev" module from the same CVS
10	*** and evdns.h include files.	18	*** repository into the EV dir (i.e. EV/libev from outside).
11	***	19	***
12	*** Version 1.3e or higher is recommended, but older 1.3 versions likely work too.
13	***
14		20
15	EOF	21	EOF
		22	exit 1;
		23	}
		24
		25	print <<EOF;
		26
		27	* * * * * * * * * * * * * * * * * *
		28
		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	* * * * * * * * * * * * * * * * * *
		42
		43
		44	POSIX optionally offers support for a monotonic clock source. EV
		45	can take advantage of this clock source to detect time jumps more
		46	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	will otherwise be autodetected at both compile- and runtime. (this setting
		50	currently affects the use of nanosleep over select as well).
		51
		52	EOF
		53
		54	unless (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/) {
		55	$DEFINE .= " -DEV_USE_MONOTONIC=0";
		56	}
		57
		58	print <<EOF;
		59
		60	* * * * * * * * * * * * * * * * * *
		61
		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	is also bound to be broken on some systems, and current EV versions do not
		67	actually call gettimeofday very often, so it defaults to no.
		68
		69	EOF
		70
		71	$DEFINE .= " -DEV_USE_REALTIME=" . (0 + (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "n") =~ /[yY]/));
		72
		73	print <<EOF;
		74
		75	* * * * * * * * * * * * * * * * * *
		76
		77
		78	EV can use various backends with various portability issues. The select
		79	backend is the most portable and makes for a good fallback, but it can be
		80	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	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	$DEFINE .= " -DEV_USE_SELECT=1";
		89
		90	print <<EOF;
		91
		92	* * * * * * * * * * * * * * * * * *
		93
		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	}
		106	} else {
		107	$DEFINE .= " -DEV_USE_SELECT=0";
		108	}
		109
		110	print <<EOF;
		111
		112	* * * * * * * * * * * * * * * * * *
		113
		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	$DEFINE .= " -DEV_USE_POLL=" . (0 + (prompt ("Enable poll backend (y/n)?", (have_inc "poll.h") ? "y" : "n") =~ /[yY]/));
		123
		124	print <<EOF;
		125
		126	* * * * * * * * * * * * * * * * * *
		127
		128
		129	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
		137	EOF
		138
		139	my $can_epoll = have_inc "sys/epoll.h";
		140	$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
		143	print <<EOF;
		144
		145	* * * * * * * * * * * * * * * * * *
		146
		147
		148	Linux 4.18 introduced another event polling interface, this time using
		149	the Linux AIO API. While this API is far superior to epoll and almost
		150	rivals kqueue, it also suffers from the same issues as kqueue typically
		151	does: only a subset of file types are supported (as of 4.19, I have seen
		152	eventfd, pipes, sockets files and some devices, but no ttys). It also
		153	is subject arbitrary system-wide limits imposed on it. Therefore, this
		154	backend is not used by default, even when it is compiled in, and you have
		155	to request it explicitly, e.g. with LIBEV_FLAGS=64. If unsure, accept the
		156	default.
		157
		158	EOF
		159
		160	my $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
		165	if ($can_linuxaio) {
		166	print <<EOF;
		167
		168	* * * * * * * * * * * * * * * * * *
		169
		170
		171	The previously mentioned Linux AIO backend is experimental and will not
		172	be used unless requested explicitly. You can, howeer, choose to make ti a
		173	recommended basckend, which means it will be chosen if available even when
		174	not explicitly asked for, in preference to epoll on GNU/Linux. This option
		175	is likely temporary. When unsure, accept the default.
		176
		177	EOF
		178
		179	my $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	}
		184
		185	print <<EOF;
		186
		187	* * * * * * * * * * * * * * * * * *
		188
		189
		190	Similarly to the epoll backend above, EV can take advantage of kqueue on
		191	many BSD systems. Support for kqueue will be detected at runtime, with a
		192	safe fallback to other methods when it cannot be used.
		193
		194	Note that kqueue is broken on most operating systems, so by default it
		195	won't be used on many platforms, but you can still create your own event
		196	loop with kqueue backend if you ask specifically for it.
		197
		198	Here is what we know:
		199
		200	NetBSD: partially working in at least 3.1 and later. Yeah! :)
		201	FreeBSD: broken on at least 6.2-STABLE, spotty in later versions,
		202	sockets likely work, ptys definitely don't.
		203	OpenBSD: reports indicate that it likely doesn't work
		204	(similar problems as on FreeBSD).
		205	OS X: completely, utterly broken on at least <= 10.6.
		206
		207	EOF
		208
		209	my $can_kqueue = have_inc "sys/event.h";
		210	$can_kqueue = $ENV{EV_KQUEUE} if exists $ENV{EV_KQUEUE};
		211	$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/));
		212
		213	print <<EOF;
		214
		215	* * * * * * * * * * * * * * * * * *
		216
		217
		218	Similarly to the kqueue backend above, EV can take advantage of the
		219	solaris 10 event port interface. Support for event ports will be detected
		220	at runtime, with a safe fallback to other methods when it cannot be used.
		221
		222	EOF
		223
		224	$DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable event port backend (y/n)?", (have_inc "sys/port.h") ? "y" : "n") =~ /[yY]/));
		225
		226	print <<EOF;
		227
		228	* * * * * * * * * * * * * * * * * *
		229
		230
		231	EV needs the functions pthread_atfork and clock_gettime. On most systems
		232	you need some special libraries for this (such as -lrt and -lpthread). You
		233	can specify additional libraries to provide these calls (and any other
		234	required by EV) now, or accept the default.
		235
		236	On GNU/Linux systems, EV uses the LSB 3.1 __register_atfork function
		237	to avoid the dependency on libpthread, and directly uses the clock_gettime
		238	syscall to avoid a dependency on librt.
		239
		240	EOF
		241
		242	my $solaris_libs = $^O =~ /solaris/i ? "-lsocket -lnsl" : "";
		243	my $librt = $^O =~ /linux/i ? "" : "-lpthread -lrt";
		244	my $LIBS = exists $ENV{EV_LIBS} ? $ENV{EV_LIBS} : "$librt $solaris_libs";
		245	$LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", $LIBS;
		246
		247
		248	print <<EOF;
		249
		250	* * * * * * * * * * * * * * * * * *
		251
		252
		253	A backend of a different kind is the Linux inotify(7) interface, which can
		254	be used to speed up (and reduce resource consumption) of stat watchers. If
		255	you have the include file and libc support for it, it is usually a good
		256	idea to enable it, as kernel availability is detected at runtime.
		257
		258	EOF
		259
		260	my $can_inotify = have_inc "sys/inotify.h";
		261	$can_inotify = $ENV{EV_INOTIFY} if exists $ENV{EV_INOTIFY};
		262	$DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/));
		263
		264	print <<EOF;
		265
		266	* * * * * * * * * * * * * * * * * *
		267
		268
		269	Another useful bit of functionality is the Linux eventfd, which is useful
		270	for faster signal handling (don't care) and intra-thread communications
		271	(more relevant). Kernel support for this will be probed at runtime, but
		272	your libc must contain the necessary wrapper. Glibc 2.7 and later should
		273	have this wrapper.
		274
		275	EOF
		276
		277	my $can_eventfd = have_inc "sys/eventfd.h";
		278	$can_eventfd = $ENV{EV_EVENTFD} if exists $ENV{EV_EVENTFD};
		279	$DEFINE .= " -DEV_USE_EVENTFD=" . (0 + (prompt ("Enable linux eventfd support (y/n)?", $can_eventfd ? "y" : "n") =~ /[yY]/));
		280
		281	print <<EOF;
		282
		283	* * * * * * * * * * * * * * * * * *
		284
		285
		286	Another sometimes useful bit of functionality is the Linux signalfd, which
		287	is useful for faster signal handling (don't care). Kernel support for
		288	this will be probed at runtime, but your libc must contain the necessary
		289	wrapper. Glibc 2.7 and later should have this wrapper.
		290
		291	EOF
		292
		293	my $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
		297	print <<EOF;
		298
		299	* * * * * * * * * * * * * * * * * *
		300
		301
		302	Libev contains numerous internal assert() invocations to check for
		303	consistency and user errors. These are normally enabled, but most
		304	perl builds disable this error reporting mechanism by default. You
		305	can re-enable these asserts here. Enabling them might help you catch
		306	programming bugs earlier, but might cause a small slowdown. Also, failures
		307	will be reported by aboritng your program, instead of throwing a perl
		308	exception.
		309
		310	If unsure, enable this if you only use this perl installation for
		311	development, and leave it off for use in production environments.
		312
		313	EOF
		314
		315	my $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
		319	print <<EOF;
		320
		321	* * * * * * * * * * * * * * * * * *
		322
		323
		324	Very rarely, people want to tweak EV even more, e.g. to exclude
		325	or include certain watcher types or backends. This can be done by adding
		326	extra -D options here, or via the EV_EXTRA_DEFS environment variable.
		327
		328	For example, if you run into compile problems because of missing memory
		329	fences (or you just want extra performance), you can tell EV to not support
		330	smp and threads via -DEV_NO_THREADS.
		331
		332	Normal persons just press enter.
		333
		334	EOF
		335
		336	$DEFINE .= " " . prompt "Any extra -D options?", "$ENV{EV_EXTRA_DEFS}";
		337
		338	print <<EOF;
		339
		340	* * * * * * * * * * * * * * * * * *
		341
		342
		343	EOF
		344
		345	my @anyevent = eval { require AnyEvent; $AnyEvent::VERSION < 5.29 } ? (AnyEvent => 5.29) : ();
16		346
17	WriteMakefile(	347	WriteMakefile(
18	dist => {	348	dist => {
19	PREOP => 'pod2text EV.pm \| tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;',	349	PREOP => 'pod2text EV.pm \| tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;',
20	COMPRESS => 'gzip -9v',	350	COMPRESS => 'gzip -9v',
21	SUFFIX => '.gz',	351	SUFFIX => '.gz',
22	},	352	},
23	LIBS => ["-levent"],	353	depend => {
		354	"EV.c" => "EV/EVAPI.h "
		355	. "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c "
		356	. "libev/ev_vars.h libev/ev_wrap.h",
		357	},
		358	INC => "-Ilibev",
		359	DEFINE => "$DEFINE",
24	NAME => "EV",	360	NAME => "EV",
		361	LIBS => [$LIBS],
		362	PREREQ_PM => {
		363	@anyevent,
		364	"common::sense" => 0,
		365	},
		366	CONFIGURE_REQUIRES => { "ExtUtils::MakeMaker" => 6.52, "Canary::Stability" => 0 },
25	VERSION_FROM => "EV.pm",	367	VERSION_FROM => "EV.pm",
26	PM => {	368	PM => {
27	'EV.pm' => '$(INST_LIBDIR)/EV.pm',	369	'EV.pm' => '$(INST_LIB)/EV.pm',
28	'EV/AnyEvent.pm' => '$(INST_LIBDIR)/EV/AnyEvent.pm',
29	'EV/DNS.pm' => '$(INST_LIBDIR)/EV/DNS.pm',
30	'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h',	370	'EV/EVAPI.h' => '$(INST_LIB)/EV/EVAPI.h',
31	'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm',	371	'EV/MakeMaker.pm' => '$(INST_LIB)/EV/MakeMaker.pm',
		372	'libev/ev.h' => '$(INST_LIB)/EV/ev.h',
		373	'libev/ev.pod' => '$(INST_LIB)/EV/libev.pod',
32	},	374	},
		375	MAN3PODS => {
		376	'EV.pm' => '$(INST_MAN3DIR)/EV.$(MAN3EXT)',
		377	'EV/MakeMaker.pm' => '$(INST_MAN3DIR)/EV::MakeMaker.$(MAN3EXT)',
		378	'libev/ev.pod' => '$(INST_MAN3DIR)/EV::libev.$(MAN3EXT)',
		379	},
33	);	380	);
34		381
		382

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Comparing EV/Makefile.PL (file contents): Revision 1.5 by root, Mon Oct 29 08:48:07 2007 UTC vs. Revision 1.61 by root, Tue Jun 25 23:57:23 2019 UTC

Diff Legend

Comparing EV/Makefile.PL (file contents):
Revision 1.5 by root, Mon Oct 29 08:48:07 2007 UTC vs.
Revision 1.61 by root, Tue Jun 25 23:57:23 2019 UTC