1 | use 5.006; |
1 | use 5.008002; |
2 | |
2 | |
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3 | use strict qw(vars subs); |
3 | use Config; |
4 | use Config; |
4 | use ExtUtils::MakeMaker; |
5 | use ExtUtils::MakeMaker; |
5 | |
6 | |
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7 | sub have_inc($) { |
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8 | scalar grep -r "$_/$_[0]", $Config{usrinc}, split / /, $Config{incpth} |
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9 | } |
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10 | |
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11 | my $DEFINE; |
6 | |
12 | |
7 | unless (-e "libev/ev_epoll.c") { |
13 | unless (-e "libev/ev_epoll.c") { |
8 | print <<EOF; |
14 | print <<EOF; |
9 | |
15 | |
10 | *** |
16 | *** |
… | |
… | |
17 | exit 1; |
23 | exit 1; |
18 | } |
24 | } |
19 | |
25 | |
20 | print <<EOF; |
26 | print <<EOF; |
21 | |
27 | |
22 | |
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23 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
28 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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29 | |
24 | |
30 | |
25 | Welcome to EV configuration. If you are in a hurry, just press return here |
31 | 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. |
32 | and hope for the best. The defaults should usually do. |
27 | |
33 | |
28 | EOF |
34 | EOF |
… | |
… | |
31 | $ENV{PERL_MM_USE_DEFAULT} = 1; |
37 | $ENV{PERL_MM_USE_DEFAULT} = 1; |
32 | } |
38 | } |
33 | |
39 | |
34 | print <<EOF; |
40 | print <<EOF; |
35 | |
41 | |
36 | |
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37 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
42 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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43 | |
38 | |
44 | |
39 | POSIX optionally offers support for a monotonic clock source. EV |
45 | POSIX optionally offers support for a monotonic clock source. EV |
40 | can take advantage of this clock source to detect time jumps |
46 | can take advantage of this clock source to detect time jumps more |
41 | reliably. Unfortunately, some systems are bound to be broken, so you can |
47 | 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 |
48 | 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 |
49 | the monotonic clock by answering 'n' here. Support for this clock type |
44 | will otherwise be autodetected at both compile- and runtime. |
50 | will otherwise be autodetected at both compile- and runtime. (this setting |
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51 | currently affects the use of nanosleep over select as well). |
45 | |
52 | |
46 | EOF |
53 | EOF |
47 | |
54 | |
48 | if (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/) { |
55 | unless (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/) { |
49 | $DEFINE .= " -DEV_USE_MONOTONIC"; |
56 | $DEFINE .= " -DEV_USE_MONOTONIC=0"; |
50 | } |
57 | } |
51 | |
58 | |
52 | print <<EOF; |
59 | print <<EOF; |
53 | |
60 | |
54 | |
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55 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
61 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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62 | |
56 | |
63 | |
57 | POSIX optionally offers support for a (potentially) high-resolution |
64 | POSIX optionally offers support for a (potentially) high-resolution |
58 | realtime clock interface. In a good implementation, using it is faster |
65 | realtime clock interface. In a good implementation, using it is faster |
59 | than the normal method of using gettimeofday. Unfortunately, this option |
66 | 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 |
67 | is also bound to be broken on some systems, and current EV versions do not |
61 | probing of this feature altogether here. Otherwise support for this clock |
68 | actually call gettimeofday very often, so it defaults to no. |
62 | type will be autodetected at compiletime. |
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63 | |
69 | |
64 | EOF |
70 | EOF |
65 | |
71 | |
66 | if (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "y") !~ /[yY]/) { |
72 | $DEFINE .= " -DEV_USE_REALTIME=" . (0 + (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "n") =~ /[yY]/)); |
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73 | |
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74 | print <<EOF; |
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75 | |
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76 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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77 | |
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78 | |
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79 | EV can use various backends with various portability issues. The select |
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80 | backend is the most portable and makes for a good fallback, but it can be |
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81 | limited to a low number of file descriptors and/or might not compile. If |
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82 | you have problems with compiling ev_select.c, you might try to play around |
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83 | with disabling it here, or forcing it to use the fd_set provided by your |
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84 | OS, via the next question. I highly recommend keeping it in. |
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85 | |
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86 | EOF |
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87 | |
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88 | if (prompt ("Enable select backend (y/n)?", "y") =~ /[yY]/) { |
67 | $DEFINE .= " -DEV_USE_REALTIME=0"; |
89 | $DEFINE .= " -DEV_USE_SELECT=1"; |
68 | } |
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69 | |
90 | |
70 | print <<EOF; |
91 | print <<EOF; |
71 | |
92 | |
72 | |
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73 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
93 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
74 | |
94 | |
75 | EV by default uses select, which makes it hard to write efficient servers, |
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76 | especially if the number of active conencitons is much lower than the open |
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77 | ones. GNU/Linux systems have a more scalable method called "epoll", which |
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78 | EV can use. For this to work, both your kernel and glibc have to support |
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79 | epoll, but if you can compile it, the detection will be done at runtime, |
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80 | and EV will safely fall back to using select when epoll isn't available. |
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81 | If unsure, accept the default. |
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82 | |
95 | |
83 | EOF |
96 | The select backend can operate in two modes. One uses the system-provided |
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97 | fd_set and is usually limited to 1024 file descriptors (64 on windows), |
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98 | the other requires your header files to define NFDBITS and declare a |
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99 | suitable fd_mask type. If you run into problems compiling ev_select.c, you |
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100 | can try forcing the use of the system fd_set here. |
84 | |
101 | |
85 | if (prompt ("Enable epoll backend (y/n)?", (-e "/usr/include/sys/epoll.h") ? "y" : "n") =~ /[yY]/) { |
102 | EOF |
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103 | |
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104 | if (prompt ("Force use of system fd_set for select backend (y/n)?", "n") =~ /[yY]/) { |
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105 | $DEFINE .= " -DEV_SELECT_USE_FD_SET"; |
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106 | } |
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107 | } else { |
86 | $DEFINE .= " -DEV_USE_EPOLL"; |
108 | $DEFINE .= " -DEV_USE_SELECT=0"; |
87 | } |
109 | } |
88 | |
110 | |
89 | print <<EOF; |
111 | print <<EOF; |
90 | |
112 | |
91 | |
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92 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
113 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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114 | |
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115 | |
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116 | The second very portable backend is poll(2). It does not exist on windows |
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117 | and various versions of Mac OS X (and on the other versions it simply |
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118 | doesn't work), but works basically everywhere else. It is recommended to use |
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119 | the default here unless you run into compile problems in ev_poll.c. |
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120 | |
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121 | EOF |
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122 | |
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123 | $DEFINE .= " -DEV_USE_POLL=" . (0 + (prompt ("Enable poll backend (y/n)?", (have_inc "poll.h") ? "y" : "n") =~ /[yY]/)); |
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124 | |
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125 | print <<EOF; |
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126 | |
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127 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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128 | |
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129 | |
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130 | Select and poll make it hard to write efficient servers, especially if the |
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131 | number of active connections is much lower than the watched ones. GNU/Linux |
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132 | systems have a more scalable method called "epoll", which EV can use. For |
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133 | this to work, both your kernel and glibc have to support epoll, but if you |
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134 | can compile it, the detection will be done at runtime, and EV will safely |
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135 | fall back to using select when epoll isn't available. If unsure, accept |
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136 | the default. |
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137 | |
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138 | EOF |
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139 | |
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140 | my $can_epoll = have_inc "sys/epoll.h"; |
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141 | $can_epoll = $ENV{EV_EPOLL} if exists $ENV{EV_EPOLL}; |
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142 | $DEFINE .= " -DEV_USE_EPOLL=" . (0 + (prompt ("Enable epoll backend (y/n)?", $can_epoll ? "y" : "n") =~ /[yY]/)); |
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143 | |
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144 | print <<EOF; |
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145 | |
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146 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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147 | |
93 | |
148 | |
94 | Similarly to the epoll backend above, EV can take advantage of kqueue on |
149 | Similarly to the epoll backend above, EV can take advantage of kqueue on |
95 | many BSD systems (it seems to be broken on Mac OS X though). The kqueue |
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96 | backend has not been tested, however, so it is disabled by default. Please |
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97 | test (and preferably fix) the kqueue backend when you have a machine |
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98 | supporting it. Support for kqueue will be detected at runtime, with a |
150 | many BSD systems. Support for kqueue will be detected at runtime, with a |
99 | safe fallback to other methods when it cannot be used. |
151 | safe fallback to other methods when it cannot be used. |
100 | |
152 | |
101 | EOF |
153 | Note that kqueue is broken on most operating systems, so by default it |
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154 | won't be used on many platforms, but you can still create your own event |
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155 | loop with kqueue backend if you ask specifically for it. |
102 | |
156 | |
103 | if (prompt ("Enable kqueue backend (y/n)?", (-e "/usr/include/sys/event.h") ? "y" : "n") =~ /[yY]/) { |
157 | Here is what we know: |
104 | $DEFINE .= " -DEV_USE_KQUEUE"; |
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105 | } |
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106 | |
158 | |
107 | print <<EOF; |
159 | NetBSD: partially working in at least 3.1 and later. Yeah! :) |
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160 | FreeBSD: broken on at least 6.2-STABLE, spotty in later versions, |
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161 | sockets *likely* work, ptys definitely don't. |
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162 | OpenBSD: reports indicate that it likely doesn't work |
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163 | (similar problems as on FreeBSD). |
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164 | OS X: completely, utterly broken on at least <= 10.6. |
108 | |
165 | |
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166 | EOF |
109 | |
167 | |
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168 | my $can_kqueue = have_inc "sys/event.h"; |
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169 | $can_kqueue = $ENV{EV_KQUEUE} if exists $ENV{EV_KQUEUE}; |
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170 | $DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/)); |
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171 | |
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172 | print <<EOF; |
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173 | |
110 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
174 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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175 | |
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176 | |
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177 | Similarly to the kqueue backend above, EV can take advantage of the |
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178 | solaris 10 event port interface. Support for event ports will be detected |
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179 | at runtime, with a safe fallback to other methods when it cannot be used. |
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180 | |
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181 | EOF |
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182 | |
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183 | $DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable event port backend (y/n)?", (have_inc "sys/port.h") ? "y" : "n") =~ /[yY]/)); |
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184 | |
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185 | print <<EOF; |
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186 | |
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187 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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188 | |
111 | |
189 | |
112 | EV needs the functions pthread_atfork and clock_gettime. On most systems |
190 | EV needs the functions pthread_atfork and clock_gettime. On most systems |
113 | you need some special libraries for this (such as -lrt and -lpthread). You |
191 | you need some special libraries for this (such as -lrt and -lpthread). You |
114 | can specify additional libraries to provide these calls now, or accept the |
192 | can specify additional libraries to provide these calls (and any other |
115 | default. |
193 | required by EV) now, or accept the default. |
116 | |
194 | |
117 | EOF |
195 | On GNU/Linux systems, EV uses the LSB 3.1 __register_atfork function |
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196 | to avoid the dependency on libpthread, and directly uses the clock_gettime |
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197 | syscall to avoid a dependency on librt. |
118 | |
198 | |
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199 | EOF |
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200 | |
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201 | my $solaris_libs = $^O =~ /solaris/i ? "-lsocket -lnsl" : ""; |
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202 | my $librt = $^O =~ /linux/i ? "" : "-lpthread -lrt"; |
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203 | my $LIBS = exists $ENV{EV_LIBS} ? $ENV{EV_LIBS} : "$librt $solaris_libs"; |
119 | $LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "-lpthread -lrt"; |
204 | $LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", $LIBS; |
120 | |
205 | |
121 | |
206 | |
122 | print <<EOF; |
207 | print <<EOF; |
123 | |
208 | |
124 | |
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125 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
209 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
126 | |
210 | |
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211 | |
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212 | A backend of a different kind is the Linux inotify(7) interface, which can |
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213 | be used to speed up (and reduce resource consumption) of stat watchers. If |
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214 | you have the include file and libc support for it, it is usually a good |
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215 | idea to enable it, as kernel availability is detected at runtime. |
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216 | |
127 | EOF |
217 | EOF |
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218 | |
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219 | my $can_inotify = have_inc "sys/inotify.h"; |
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220 | $can_inotify = $ENV{EV_INOTIFY} if exists $ENV{EV_INOTIFY}; |
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221 | $DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/)); |
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222 | |
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223 | print <<EOF; |
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224 | |
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225 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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226 | |
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227 | |
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228 | Another useful bit of functionality is the Linux eventfd, which is useful |
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229 | for faster signal handling (don't care) and intra-thread communications |
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230 | (more relevant). Kernel support for this will be probed at runtime, but |
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231 | your libc must contain the necessary wrapper. Glibc 2.7 and later should |
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232 | have this wrapper. |
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233 | |
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234 | EOF |
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235 | |
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236 | my $can_eventfd = have_inc "sys/eventfd.h"; |
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237 | $can_eventfd = $ENV{EV_EVENTFD} if exists $ENV{EV_EVENTFD}; |
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238 | $DEFINE .= " -DEV_USE_EVENTFD=" . (0 + (prompt ("Enable linux eventfd support (y/n)?", $can_eventfd ? "y" : "n") =~ /[yY]/)); |
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239 | |
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240 | print <<EOF; |
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241 | |
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242 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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243 | |
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244 | |
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245 | Another sometimes useful bit of functionality is the Linux signalfd, which |
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246 | is useful for faster signal handling (don't care). Kernel support for |
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247 | this will be probed at runtime, but your libc must contain the necessary |
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248 | wrapper. Glibc 2.7 and later should have this wrapper. |
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249 | |
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250 | EOF |
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251 | |
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252 | my $can_signalfd = have_inc "sys/signalfd.h"; |
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253 | $can_signalfd = $ENV{EV_SIGNALFD} if exists $ENV{EV_SIGNALFD}; |
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254 | $DEFINE .= " -DEV_USE_SIGNALFD=" . (0 + (prompt ("Enable linux signalfd support (y/n)?", $can_signalfd ? "y" : "n") =~ /[yY]/)); |
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255 | |
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256 | print <<EOF; |
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257 | |
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258 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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259 | |
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260 | |
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261 | Very rarely, people want to tweak EV even more, e.g. to exclude |
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262 | or include certain watcher types or backends. This can be done by adding |
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263 | extra -D options here, or via the EV_EXTRA_DEFS environment variable. |
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264 | |
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265 | For example, if you run into compile problems because of missing memory |
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266 | fences (or you just want extra performance), you can tell EV to not support |
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267 | smp and threads via -DEV_NO_THREADS. |
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268 | |
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269 | Normal persons just press enter. |
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270 | |
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271 | EOF |
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272 | |
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273 | $DEFINE .= " " . prompt "Any extra -D options?", "$ENV{EV_EXTRA_DEFS}"; |
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274 | |
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275 | print <<EOF; |
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276 | |
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277 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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278 | |
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279 | |
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280 | EOF |
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281 | |
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282 | my @anyevent = eval { require AnyEvent; $AnyEvent::VERSION < 5.29 } ? (AnyEvent => 5.29) : (); |
128 | |
283 | |
129 | WriteMakefile( |
284 | WriteMakefile( |
130 | dist => { |
285 | dist => { |
131 | PREOP => 'pod2text EV.pm | tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;', |
286 | PREOP => 'pod2text EV.pm | tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;', |
132 | COMPRESS => 'gzip -9v', |
287 | COMPRESS => 'gzip -9v', |
133 | SUFFIX => '.gz', |
288 | SUFFIX => '.gz', |
134 | }, |
289 | }, |
135 | depend => { |
290 | depend => { |
136 | "EV.c" => "EV/EVAPI.h " |
291 | "EV.c" => "EV/EVAPI.h " |
137 | . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c " |
292 | . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c " |
138 | . "libev/event.h libev/event.c libev/evdns.h libev/evdns.c", |
293 | . "libev/ev_vars.h libev/ev_wrap.h", |
139 | }, |
294 | }, |
140 | INC => "-Ilibev", |
295 | INC => "-Ilibev", |
141 | DEFINE => "$DEFINE", |
296 | DEFINE => "$DEFINE", |
142 | NAME => "EV", |
297 | NAME => "EV", |
143 | LIBS => [$LIBS], |
298 | LIBS => [$LIBS], |
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299 | PREREQ_PM => { |
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300 | @anyevent, |
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301 | "common::sense" => 0, |
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302 | }, |
144 | VERSION_FROM => "EV.pm", |
303 | VERSION_FROM => "EV.pm", |
145 | PM => { |
304 | PM => { |
146 | 'EV.pm' => '$(INST_LIBDIR)/EV.pm', |
305 | 'EV.pm' => '$(INST_LIB)/EV.pm', |
147 | 'EV/AnyEvent.pm' => '$(INST_LIBDIR)/EV/AnyEvent.pm', |
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148 | 'EV/DNS.pm' => '$(INST_LIBDIR)/EV/DNS.pm', |
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149 | 'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h', |
306 | 'EV/EVAPI.h' => '$(INST_LIB)/EV/EVAPI.h', |
150 | 'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm', |
307 | 'EV/MakeMaker.pm' => '$(INST_LIB)/EV/MakeMaker.pm', |
151 | 'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h', |
308 | 'libev/ev.h' => '$(INST_LIB)/EV/ev.h', |
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309 | 'libev/ev.pod' => '$(INST_LIB)/EV/libev.pod', |
152 | }, |
310 | }, |
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311 | MAN3PODS => { |
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312 | 'EV.pm' => '$(INST_MAN3DIR)/EV.$(MAN3EXT)', |
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313 | 'EV/MakeMaker.pm' => '$(INST_MAN3DIR)/EV::MakeMaker.$(MAN3EXT)', |
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314 | 'libev/ev.pod' => '$(INST_MAN3DIR)/EV::libev.$(MAN3EXT)', |
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315 | }, |
153 | ); |
316 | ); |
154 | |
317 | |
155 | |
318 | |