[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 1.63 by root, Fri Jul 12 06:18:37 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	# minix has all the header files, but no implementation. won-der-ful.
		210	my $can_kqueue = have_inc "sys/event.h" && $^O ne "minix";
		211	$can_kqueue = $ENV{EV_KQUEUE} if exists $ENV{EV_KQUEUE};
		212	$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/));
		213
		214	print <<EOF;
		215
		216	* * * * * * * * * * * * * * * * * *
		217
		218
		219	Similarly to the kqueue backend above, EV can take advantage of the
		220	solaris 10 event port interface. Support for event ports will be detected
		221	at runtime, with a safe fallback to other methods when it cannot be used.
		222
		223	EOF
		224
		225	$DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable event port backend (y/n)?", (have_inc "sys/port.h") ? "y" : "n") =~ /[yY]/));
		226
		227	print <<EOF;
		228
		229	* * * * * * * * * * * * * * * * * *
		230
		231
		232	EV needs the functions pthread_atfork and clock_gettime. On most systems
		233	you need some special libraries for this (such as -lrt and -lpthread). You
		234	can specify additional libraries to provide these calls (and any other
		235	required by EV) now, or accept the default.
		236
		237	On GNU/Linux systems, EV uses the LSB 3.1 __register_atfork function
		238	to avoid the dependency on libpthread, and directly uses the clock_gettime
		239	syscall to avoid a dependency on librt.
		240
		241	EOF
		242
		243	my $solaris_libs = $^O =~ /solaris/i ? "-lsocket -lnsl" : "";
		244	my $librt = $^O =~ /linux/i ? "" : "-lpthread -lrt";
		245	my $LIBS = exists $ENV{EV_LIBS} ? $ENV{EV_LIBS} : "$librt $solaris_libs";
		246	$LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", $LIBS;
		247
		248
		249	print <<EOF;
		250
		251	* * * * * * * * * * * * * * * * * *
		252
		253
		254	A backend of a different kind is the Linux inotify(7) interface, which can
		255	be used to speed up (and reduce resource consumption) of stat watchers. If
		256	you have the include file and libc support for it, it is usually a good
		257	idea to enable it, as kernel availability is detected at runtime.
		258
		259	EOF
		260
		261	my $can_inotify = have_inc "sys/inotify.h";
		262	$can_inotify = $ENV{EV_INOTIFY} if exists $ENV{EV_INOTIFY};
		263	$DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/));
		264
		265	print <<EOF;
		266
		267	* * * * * * * * * * * * * * * * * *
		268
		269
		270	Another useful bit of functionality is the Linux eventfd, which is useful
		271	for faster signal handling (don't care) and intra-thread communications
		272	(more relevant). Kernel support for this will be probed at runtime, but
		273	your libc must contain the necessary wrapper. Glibc 2.7 and later should
		274	have this wrapper.
		275
		276	EOF
		277
		278	my $can_eventfd = have_inc "sys/eventfd.h";
		279	$can_eventfd = $ENV{EV_EVENTFD} if exists $ENV{EV_EVENTFD};
		280	$DEFINE .= " -DEV_USE_EVENTFD=" . (0 + (prompt ("Enable linux eventfd support (y/n)?", $can_eventfd ? "y" : "n") =~ /[yY]/));
		281
		282	print <<EOF;
		283
		284	* * * * * * * * * * * * * * * * * *
		285
		286
		287	Another sometimes useful bit of functionality is the Linux signalfd, which
		288	is useful for faster signal handling (don't care). Kernel support for
		289	this will be probed at runtime, but your libc must contain the necessary
		290	wrapper. Glibc 2.7 and later should have this wrapper.
		291
		292	EOF
		293
		294	my $can_signalfd = have_inc "sys/signalfd.h";
		295	$can_signalfd = $ENV{EV_SIGNALFD} if exists $ENV{EV_SIGNALFD};
		296	$DEFINE .= " -DEV_USE_SIGNALFD=" . (0 + (prompt ("Enable linux signalfd support (y/n)?", $can_signalfd ? "y" : "n") =~ /[yY]/));
		297
		298	print <<EOF;
		299
		300	* * * * * * * * * * * * * * * * * *
		301
		302
		303	Libev contains numerous internal assert() invocations to check for
		304	consistency and user errors. These are normally enabled, but most
		305	perl builds disable this error reporting mechanism by default. You
		306	can re-enable these asserts here. Enabling them might help you catch
		307	programming bugs earlier, but might cause a small slowdown. Also, failures
		308	will be reported by aboritng your program, instead of throwing a perl
		309	exception.
		310
		311	If unsure, enable this if you only use this perl installation for
		312	development, and leave it off for use in production environments.
		313
		314	EOF
		315
		316	my $enable_assertions = 0;
		317	$enable_assertions = 0 + (prompt ("Make sure assertions are enabled? (y/n)?", $enable_assertions ? "y" : "n") =~ /[yY]/);
		318	$DEFINE .= " -DEV_ENABLE_ASERTIONS=1" if $enable_assertions;
		319
		320	print <<EOF;
		321
		322	* * * * * * * * * * * * * * * * * *
		323
		324
		325	Very rarely, people want to tweak EV even more, e.g. to exclude
		326	or include certain watcher types or backends. This can be done by adding
		327	extra -D options here, or via the EV_EXTRA_DEFS environment variable.
		328
		329	For example, if you run into compile problems because of missing memory
		330	fences (or you just want extra performance), you can tell EV to not support
		331	smp and threads via -DEV_NO_THREADS.
		332
		333	Normal persons just press enter.
		334
		335	EOF
		336
		337	$DEFINE .= " " . prompt "Any extra -D options?", "$ENV{EV_EXTRA_DEFS}";
		338
		339	print <<EOF;
		340
		341	* * * * * * * * * * * * * * * * * *
		342
		343
		344	EOF
		345
		346	my @anyevent = eval { require AnyEvent; $AnyEvent::VERSION < 5.29 } ? (AnyEvent => 5.29) : ();
16		347
17	WriteMakefile(	348	WriteMakefile(
18	dist => {	349	dist => {
19	PREOP => 'pod2text EV.pm \| tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;',	350	PREOP => 'pod2text EV.pm \| tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;',
20	COMPRESS => 'gzip -9v',	351	COMPRESS => 'gzip -9v',
21	SUFFIX => '.gz',	352	SUFFIX => '.gz',
22	},	353	},
23	LIBS => ["-levent"],	354	depend => {
		355	"EV.c" => "EV/EVAPI.h "
		356	. "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c libev/ev_linuxaio.c "
		357	. "libev/ev_vars.h libev/ev_wrap.h",
		358	},
		359	INC => "-Ilibev",
		360	DEFINE => "$DEFINE",
24	NAME => "EV",	361	NAME => "EV",
		362	LIBS => [$LIBS],
		363	PREREQ_PM => {
		364	@anyevent,
		365	"common::sense" => 0,
		366	},
		367	CONFIGURE_REQUIRES => { "ExtUtils::MakeMaker" => 6.52, "Canary::Stability" => 0 },
25	VERSION_FROM => "EV.pm",	368	VERSION_FROM => "EV.pm",
26	PM => {	369	PM => {
27	'EV.pm' => '$(INST_LIBDIR)/EV.pm',	370	'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',	371	'EV/EVAPI.h' => '$(INST_LIB)/EV/EVAPI.h',
31	'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm',	372	'EV/MakeMaker.pm' => '$(INST_LIB)/EV/MakeMaker.pm',
		373	'libev/ev.h' => '$(INST_LIB)/EV/ev.h',
		374	'libev/ev.pod' => '$(INST_LIB)/EV/libev.pod',
32	},	375	},
		376	MAN3PODS => {
		377	'EV.pm' => '$(INST_MAN3DIR)/EV.$(MAN3EXT)',
		378	'EV/MakeMaker.pm' => '$(INST_MAN3DIR)/EV::MakeMaker.$(MAN3EXT)',
		379	'libev/ev.pod' => '$(INST_MAN3DIR)/EV::libev.$(MAN3EXT)',
		380	},
33	);	381	);
34		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 1.63 by root, Fri Jul 12 06:18:37 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 1.63 by root, Fri Jul 12 06:18:37 2019 UTC