1 |
use 5.006; |
2 |
|
3 |
use Config; |
4 |
use ExtUtils::MakeMaker; |
5 |
|
6 |
|
7 |
unless (-e "libev/ev_epoll.c") { |
8 |
print <<EOF; |
9 |
|
10 |
*** |
11 |
*** 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 |
13 |
*** repository into the EV dir (i.e. EV/libev from outside). |
14 |
*** |
15 |
|
16 |
EOF |
17 |
exit 1; |
18 |
} |
19 |
|
20 |
print <<EOF; |
21 |
|
22 |
|
23 |
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
24 |
|
25 |
Welcome to EV configuration. If you are in a hurry, just press return here |
26 |
and hope for the best. The defaults should usually do. |
27 |
|
28 |
EOF |
29 |
|
30 |
if (prompt ("Skip further questions and use defaults (y/n)?", "y") =~ /[yY]/) { |
31 |
$ENV{PERL_MM_USE_DEFAULT} = 1; |
32 |
} |
33 |
|
34 |
print <<EOF; |
35 |
|
36 |
|
37 |
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
38 |
|
39 |
POSIX optionally offers support for a monotonic clock source. EV |
40 |
can take advantage of this clock source to detect time jumps |
41 |
reliably. Unfortunately, some systems are bound to be broken, so you can |
42 |
disable this here: you can completely disable the detection and use of |
43 |
the monotonic clock by answering 'n' here. Support for this clock type |
44 |
will otherwise be autodetected at both compile- and runtime. |
45 |
|
46 |
EOF |
47 |
|
48 |
if (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/) { |
49 |
$DEFINE .= " -DEV_USE_MONOTONIC"; |
50 |
} |
51 |
|
52 |
print <<EOF; |
53 |
|
54 |
|
55 |
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
56 |
|
57 |
POSIX optionally offers support for a (potentially) high-resolution |
58 |
realtime clock interface. In a good implementation, using it is faster |
59 |
than the normal method of using gettimeofday. Unfortunately, this option |
60 |
is also bound to be broken on some systems, so you can disable use and |
61 |
probing of this feature altogether here. Otherwise support for this clock |
62 |
type will be autodetected at compiletime. |
63 |
|
64 |
EOF |
65 |
|
66 |
if (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "y") !~ /[yY]/) { |
67 |
$DEFINE .= " -DEV_USE_REALTIME=0"; |
68 |
} |
69 |
|
70 |
print <<EOF; |
71 |
|
72 |
|
73 |
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
74 |
|
75 |
EV can use various backends with various portability issue. The select |
76 |
backend is the most portable and makes for a good fallback, but it can be |
77 |
limited to a low number of file descriptors and/or might not compile. If |
78 |
you have problems with compiling ev_select., you might try to play around |
79 |
with disabling it here, or forcing it to use the fd_set provided by your |
80 |
OS, via the next question. I highly recommend keeping it in. |
81 |
|
82 |
EOF |
83 |
|
84 |
if (prompt ("Enable select backend (y/n)?", "y") =~ /[yY]/) { |
85 |
$DEFINE .= " -DEV_USE_SELECT"; |
86 |
|
87 |
print <<EOF; |
88 |
|
89 |
|
90 |
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
91 |
|
92 |
The select backend can operate in two modes. One uses the system-provided |
93 |
fd_set and is usually limited to 1024 file descriptors (64 on windows), |
94 |
the other requires your header files to define NFDBITS and declare a |
95 |
suitable fd_mask type. If you run into problems compiling ev_select.c, you |
96 |
can try forcing the use of the system fd_set here. |
97 |
|
98 |
EOF |
99 |
|
100 |
if (prompt ("Force use of system fd_set for select backend (y/n)?", "n") =~ /[yY]/) { |
101 |
$DEFINE .= " -DEV_SELECT_USE_FD_SET"; |
102 |
} |
103 |
} |
104 |
|
105 |
print <<EOF; |
106 |
|
107 |
|
108 |
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
109 |
|
110 |
The second very portable backend is poll(2). It does not exist on windows |
111 |
and various versions of Mac OS X (and on the other versions it simply |
112 |
doesn't work), but works basically everywhere else. It is recommended to use |
113 |
the default here unless you run into compile problems in ev_poll.c. |
114 |
|
115 |
EOF |
116 |
|
117 |
if (prompt ("Enable poll backend (y/n)?", (-e "/usr/include/poll.h") ? "y" : "n") =~ /[yY]/) { |
118 |
$DEFINE .= " -DEV_USE_POLL"; |
119 |
} |
120 |
|
121 |
print <<EOF; |
122 |
|
123 |
|
124 |
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
125 |
|
126 |
EV by default uses select, which makes it hard to write efficient servers, |
127 |
especially if the number of active conencitons is much lower than the open |
128 |
ones. GNU/Linux systems have a more scalable method called "epoll", which |
129 |
EV can use. For this to work, both your kernel and glibc have to support |
130 |
epoll, but if you can compile it, the detection will be done at runtime, |
131 |
and EV will safely fall back to using select when epoll isn't available. |
132 |
If unsure, accept the default. |
133 |
|
134 |
EOF |
135 |
|
136 |
if (prompt ("Enable epoll backend (y/n)?", (-e "/usr/include/sys/epoll.h") ? "y" : "n") =~ /[yY]/) { |
137 |
$DEFINE .= " -DEV_USE_EPOLL"; |
138 |
} |
139 |
|
140 |
print <<EOF; |
141 |
|
142 |
|
143 |
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
144 |
|
145 |
Similarly to the epoll backend above, EV can take advantage of kqueue |
146 |
on many BSD systems (it seems to be broken on Mac OS X though, but what |
147 |
isn't broken on that shoddy platform... ah yes, the cash gushing by apple, |
148 |
selling defective software works perfectly there). Support for kqueue will |
149 |
be detected at runtime, with a safe fallback to other methods when it |
150 |
cannot be used. |
151 |
|
152 |
EOF |
153 |
|
154 |
if (prompt ("Enable kqueue backend (y/n)?", (-e "/usr/include/sys/event.h") ? "y" : "n") =~ /[yY]/) { |
155 |
$DEFINE .= " -DEV_USE_KQUEUE"; |
156 |
} |
157 |
|
158 |
print <<EOF; |
159 |
|
160 |
|
161 |
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
162 |
|
163 |
EV needs the functions pthread_atfork and clock_gettime. On most systems |
164 |
you need some special libraries for this (such as -lrt and -lpthread). You |
165 |
can specify additional libraries to provide these calls now, or accept the |
166 |
default. |
167 |
|
168 |
EOF |
169 |
|
170 |
$LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "-lpthread -lrt"; |
171 |
|
172 |
|
173 |
print <<EOF; |
174 |
|
175 |
|
176 |
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
177 |
|
178 |
EOF |
179 |
|
180 |
WriteMakefile( |
181 |
dist => { |
182 |
PREOP => 'pod2text EV.pm | tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;', |
183 |
COMPRESS => 'gzip -9v', |
184 |
SUFFIX => '.gz', |
185 |
}, |
186 |
depend => { |
187 |
"EV.c" => "EV/EVAPI.h " |
188 |
. "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c " |
189 |
. "libev/event.h libev/event.c evdns.h evdns.c libev/ev_vars.h libev/ev_wrap.h", |
190 |
}, |
191 |
INC => "-Ilibev", |
192 |
DEFINE => "$DEFINE", |
193 |
NAME => "EV", |
194 |
LIBS => [$LIBS], |
195 |
VERSION_FROM => "EV.pm", |
196 |
PM => { |
197 |
'EV.pm' => '$(INST_LIBDIR)/EV.pm', |
198 |
'EV/DNS.pm' => '$(INST_LIBDIR)/EV/DNS.pm', |
199 |
'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h', |
200 |
'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm', |
201 |
'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h', |
202 |
}, |
203 |
); |
204 |
|
205 |
|