1 | use 5.006; |
1 | use 5.006; |
2 | |
2 | |
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3 | use strict qw(vars subs); |
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4 | use Config; |
3 | use ExtUtils::MakeMaker; |
5 | use ExtUtils::MakeMaker; |
4 | |
6 | |
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7 | unless (-e "libev/ev_epoll.c") { |
5 | print <<EOF; |
8 | print <<EOF; |
6 | |
9 | |
7 | *** |
10 | *** |
8 | *** You need to install libevent (http://monkey.org/~provos/libevent/) separately |
11 | *** 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 |
12 | *** you also have to check-out the "libev" module from the same CVS |
10 | *** and evdns.h include files. |
13 | *** repository into the EV dir (i.e. EV/libev from outside). |
11 | *** |
14 | *** |
12 | *** Version 1.3e or higher is recommended, but older 1.3 versions likely work too. |
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13 | *** |
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14 | |
15 | |
15 | EOF |
16 | EOF |
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17 | exit 1; |
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18 | } |
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19 | |
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20 | print <<EOF; |
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21 | |
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22 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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23 | |
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24 | |
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25 | Welcome to EV configuration. If you are in a hurry, just press return here |
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26 | and hope for the best. The defaults should usually do. |
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27 | |
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28 | EOF |
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29 | |
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30 | if (prompt ("Skip further questions and use defaults (y/n)?", "y") =~ /[yY]/) { |
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31 | $ENV{PERL_MM_USE_DEFAULT} = 1; |
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32 | } |
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33 | |
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34 | print <<EOF; |
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35 | |
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36 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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37 | |
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38 | |
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39 | POSIX optionally offers support for a monotonic clock source. EV |
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40 | can take advantage of this clock source to detect time jumps |
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41 | reliably. Unfortunately, some systems are bound to be broken, so you can |
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42 | disable this here: you can completely disable the detection and use of |
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43 | the monotonic clock by answering 'n' here. Support for this clock type |
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44 | will otherwise be autodetected at both compile- and runtime. (this setting |
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45 | currently affects the use of nanosleep over select as well). |
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46 | |
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47 | EOF |
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48 | |
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49 | my $DEFINE .= " -DEV_USE_MONOTONIC=" . (0 + (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/)); |
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50 | |
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51 | print <<EOF; |
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52 | |
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53 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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54 | |
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55 | |
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56 | POSIX optionally offers support for a (potentially) high-resolution |
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57 | realtime clock interface. In a good implementation, using it is faster |
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58 | than the normal method of using gettimeofday. Unfortunately, this option |
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59 | is also bound to be broken on some systems, and current EV versions do not |
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60 | actually call C<gettimeofday> very often, so ti defaults to no. |
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61 | |
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62 | EOF |
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63 | |
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64 | $DEFINE .= " -DEV_USE_REALTIME=" . (0 + (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "n") =~ /[yY]/)); |
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65 | |
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66 | print <<EOF; |
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67 | |
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68 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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69 | |
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70 | |
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71 | EV can use various backends with various portability issue. The select |
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72 | backend is the most portable and makes for a good fallback, but it can be |
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73 | limited to a low number of file descriptors and/or might not compile. If |
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74 | you have problems with compiling ev_select.c, you might try to play around |
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75 | with disabling it here, or forcing it to use the fd_set provided by your |
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76 | OS, via the next question. I highly recommend keeping it in. |
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77 | |
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78 | EOF |
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79 | |
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80 | if (prompt ("Enable select backend (y/n)?", "y") =~ /[yY]/) { |
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81 | $DEFINE .= " -DEV_USE_SELECT=1"; |
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82 | |
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83 | print <<EOF; |
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84 | |
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85 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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86 | |
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87 | |
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88 | The select backend can operate in two modes. One uses the system-provided |
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89 | fd_set and is usually limited to 1024 file descriptors (64 on windows), |
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90 | the other requires your header files to define NFDBITS and declare a |
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91 | suitable fd_mask type. If you run into problems compiling ev_select.c, you |
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92 | can try forcing the use of the system fd_set here. |
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93 | |
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94 | EOF |
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95 | |
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96 | if (prompt ("Force use of system fd_set for select backend (y/n)?", "n") =~ /[yY]/) { |
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97 | $DEFINE .= " -DEV_SELECT_USE_FD_SET"; |
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98 | } |
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99 | } else { |
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100 | $DEFINE .= " -DEV_USE_SELECT=0"; |
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101 | } |
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102 | |
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103 | print <<EOF; |
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104 | |
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105 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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106 | |
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107 | |
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108 | The second very portable backend is poll(2). It does not exist on windows |
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109 | and various versions of Mac OS X (and on the other versions it simply |
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110 | doesn't work), but works basically everywhere else. It is recommended to use |
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111 | the default here unless you run into compile problems in ev_poll.c. |
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112 | |
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113 | EOF |
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114 | |
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115 | $DEFINE .= " -DEV_USE_POLL=" . (0 + (prompt ("Enable poll backend (y/n)?", (-e "/usr/include/poll.h") ? "y" : "n") =~ /[yY]/)); |
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116 | |
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117 | print <<EOF; |
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118 | |
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119 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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120 | |
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121 | |
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122 | Select and poll make it hard to write efficient servers, especially if the |
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123 | number of active connections is much lower than the watched ones. GNU/Linux |
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124 | systems have a more scalable method called "epoll", which EV can use. For |
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125 | this to work, both your kernel and glibc have to support epoll, but if you |
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126 | can compile it, the detection will be done at runtime, and EV will safely |
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127 | fall back to using select when epoll isn't available. If unsure, accept |
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128 | the default. |
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129 | |
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130 | EOF |
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131 | |
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132 | my $can_epoll = -e "/usr/include/sys/epoll.h"; |
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133 | $can_epoll = $ENV{EV_EPOLL} if exists $ENV{EV_EPOLL}; |
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134 | $DEFINE .= " -DEV_USE_EPOLL=" . (0 + (prompt ("Enable epoll backend (y/n)?", $can_epoll ? "y" : "n") =~ /[yY]/)); |
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135 | |
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136 | print <<EOF; |
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137 | |
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138 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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139 | |
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140 | |
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141 | Similarly to the epoll backend above, EV can take advantage of kqueue on |
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142 | many BSD systems. Support for kqueue will be detected at runtime, with a |
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143 | safe fallback to other methods when it cannot be used. |
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144 | |
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145 | Note that kqueue is broken on most operating systems, so by default it |
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146 | won't be used on many platforms, but you can still create your own event |
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147 | loop with kqueue backend if you ask specifically for it. |
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148 | |
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149 | Here is what we know: |
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150 | |
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151 | NetBSD: partially working in at least 3.1. Yeah! :) |
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152 | FreeBSD: broken on at least 6.2-STABLE, |
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153 | sockets *likely* work, ptys definitely don't. |
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154 | OpenBSD: reports indicate that it likely doesn't work |
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155 | (similar problems as on FreeBSD). |
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156 | OS X: completely, utterly broken on at least < 10.5. |
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157 | |
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158 | EOF |
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159 | |
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160 | my $can_kqueue = -e "/usr/include/sys/event.h"; |
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161 | $can_kqueue = $ENV{EV_KQUEUE} if exists $ENV{EV_KQUEUE}; |
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162 | $DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/)); |
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163 | |
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164 | print <<EOF; |
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165 | |
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166 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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167 | |
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168 | |
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169 | Similarly to the kqueue backend above, EV can take advantage of the |
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170 | solaris 10 event port interface. Support for event ports will be detected |
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171 | at runtime, with a safe fallback to other methods when it cannot be used. |
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172 | |
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173 | EOF |
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174 | |
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175 | $DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable event port backend (y/n)?", (-e "/usr/include/sys/port.h") ? "y" : "n") =~ /[yY]/)); |
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176 | |
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177 | print <<EOF; |
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178 | |
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179 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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180 | |
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181 | |
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182 | EV needs the functions pthread_atfork and clock_gettime. On most systems |
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183 | you need some special libraries for this (such as -lrt and -lpthread). You |
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184 | can specify additional libraries to provide these calls (and any other |
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185 | required by EV) now, or accept the default. |
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186 | |
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187 | EOF |
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188 | |
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189 | my $solaris_libs = $^O =~ /solaris/i ? "-lsocket -lnsl" : ""; |
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190 | my $librt = $^O =~ /linux/i ? "-lpthread" : "-lpthread -lrt"; |
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191 | my $LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "$librt $solaris_libs"; |
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192 | |
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193 | |
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194 | print <<EOF; |
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195 | |
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196 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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197 | |
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198 | |
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199 | A backend of a different kind is the Linux inotify(7) interface, which can |
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200 | be used to speed up (and reduce resource consumption) of stat watchers. If |
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201 | you have the include file and libc support for it, it is usually a good |
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202 | idea to enable it, as kernel availability is detected at runtime. |
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203 | |
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204 | EOF |
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205 | |
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206 | my $can_inotify = -e "/usr/include/sys/inotify.h"; |
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207 | $can_inotify = $ENV{EV_INOTIFY} if exists $ENV{EV_INOTIFY}; |
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208 | $DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/)); |
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209 | |
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210 | print <<EOF; |
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211 | |
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212 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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213 | |
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214 | |
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215 | Another useful bit of functionality is the Linux eventfd, which is useful |
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216 | for faster signal handling (don't care) and intra-thread communications |
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217 | (more relevant). Kernel support for this will be probed at runtime, but |
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218 | your libc must contain the necessary wrapper. Glibc 2.7 and later should |
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219 | have this wrapper. |
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220 | |
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221 | EOF |
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222 | |
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223 | my $can_eventfd = -e "/usr/include/sys/eventfd.h"; |
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224 | $can_eventfd = $ENV{EV_EVENTFD} if exists $ENV{EV_EVENTFD}; |
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225 | $DEFINE .= " -DEV_USE_EVENTFD=" . (0 + (prompt ("Enable linux eventfd support (y/n)?", $can_eventfd ? "y" : "n") =~ /[yY]/)); |
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226 | |
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227 | print <<EOF; |
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228 | |
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229 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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230 | |
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231 | |
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232 | EOF |
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233 | |
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234 | my @anyevent = eval { require AnyEvent; $AnyEvent::VERSION < 2.6 } ? (AnyEvent => 2.6) : (); |
16 | |
235 | |
17 | WriteMakefile( |
236 | WriteMakefile( |
18 | dist => { |
237 | dist => { |
19 | PREOP => 'pod2text EV.pm | tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;', |
238 | PREOP => 'pod2text EV.pm | tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;', |
20 | COMPRESS => 'gzip -9v', |
239 | COMPRESS => 'gzip -9v', |
21 | SUFFIX => '.gz', |
240 | SUFFIX => '.gz', |
22 | }, |
241 | }, |
23 | LIBS => ["-levent"], |
242 | depend => { |
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243 | "EV.c" => "EV/EVAPI.h " |
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244 | . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c " |
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245 | . "libev/ev_vars.h libev/ev_wrap.h", |
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246 | }, |
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247 | INC => "-Ilibev", |
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248 | DEFINE => "$DEFINE", |
24 | NAME => "EV", |
249 | NAME => "EV", |
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250 | LIBS => [$LIBS], |
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251 | PREREQ_PM => { |
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252 | @anyevent, |
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253 | }, |
25 | VERSION_FROM => "EV.pm", |
254 | VERSION_FROM => "EV.pm", |
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255 | PM => { |
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256 | 'EV.pm' => '$(INST_LIBDIR)/EV.pm', |
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257 | 'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h', |
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258 | 'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm', |
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259 | 'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h', |
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260 | 'libev/ev.pod' => '$(INST_LIBDIR)/EV/libev.pod', |
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261 | }, |
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262 | MAN3PODS => { |
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263 | 'EV.pm' => '$(INST_MAN3DIR)/EV.$(MAN3EXT)', |
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264 | 'EV/MakeMaker.pm' => '$(INST_MAN3DIR)/EV::MakeMaker.$(MAN3EXT)', |
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265 | 'libev/ev.pod' => '$(INST_MAN3DIR)/EV::libev.$(MAN3EXT)', |
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266 | }, |
26 | ); |
267 | ); |
27 | |
268 | |
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269 | |