1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
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3 | "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
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4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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5 | %general-entities;
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6 | ]>
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7 |
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8 | <sect1 id="ch-system-perl" role="wrap">
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9 | <?dbhtml filename="perl-64bit.html"?>
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10 |
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11 | <title>Perl-&perl-version; 64 Bit</title>
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12 |
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13 | <indexterm zone="ch-system-perl">
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14 | <primary sortas="a-Perl">Perl</primary>
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15 | </indexterm>
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16 |
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17 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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18 | href="../common/perl.xml"
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19 | xpointer="xpointer(//*[@role='package'])"/>
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20 |
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21 | <sect2 role="installation">
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22 | <title>Installation of Perl</title>
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23 |
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24 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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25 | href="../common/perl.xml"
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26 | xpointer="xpointer(//*[@os='p1'])"/>
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27 |
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28 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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29 | href="../common/perl.xml"
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30 | xpointer="xpointer(//*[@os='p2'])"/>
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31 |
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32 | <para os="p3">Perl does not, by default, know about library directories with names other
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33 | than lib, The following patch will allow it to install to other directories:</para>
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34 |
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35 | <screen os="p4"><userinput>patch -Np1 -i ../&perl-multilib-patch;</userinput></screen>
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36 |
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37 | <para os="s1">There is a further (possibly cosmetic) anomaly - if we install perl and
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38 | then run <command>perl -V</command> it will claim that libc is in /lib. The
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39 | following sed fixes this, but only takes effect when <command>make install
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40 | </command> is run:</para>
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41 |
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42 | <screen os="s2"><userinput>sed -i "/libc/s@/lib@/lib64@" hints/linux.sh</userinput></screen>
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43 |
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44 | <para os="m2">We still need to tell perl to actually use lib64:</para>
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45 |
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46 | <screen os="m3"><userinput>echo 'installstyle="lib64/perl5"' >>hints/linux.sh</userinput></screen>
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47 |
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48 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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49 | href="../common/perl.xml"
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50 | xpointer="xpointer(//*[@os='a00'])"/>
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51 |
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52 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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53 | href="../common/perl.xml"
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54 | xpointer="xpointer(//*[@os='a01'])"/>
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55 |
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56 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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57 | href="../common/perl.xml"
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58 | xpointer="xpointer(//*[@os='a'])"/>
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59 |
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60 | <screen os="b"><userinput>./configure.gnu --prefix=/usr \
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61 | -Dman1dir=/usr/share/man/man1 \
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62 | -Dman3dir=/usr/share/man/man3 \
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63 | -Dpager="/bin/less -isR" \
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64 | -Dlibpth="/usr/local/lib64 /lib64 /usr/lib64" \
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65 | -Dcc="gcc ${BUILD64}" \
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66 | -Dusethreads</userinput></screen>
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67 |
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68 | <variablelist os="m4">
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69 | <title>The meaning of the new configure option:</title>
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70 |
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71 | <varlistentry>
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72 | <term><parameter>-Dlibpth="/usr/local/lib64 /lib64 /usr/lib64"</parameter></term>
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73 | <listitem>
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74 | <para>This tells Perl to link against the 64-bit libraries.</para>
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75 | </listitem>
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76 | </varlistentry>
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77 |
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78 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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79 | href="../common/perl.xml"
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80 | xpointer="xpointer(//*[@os='c1'])"/>
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81 |
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82 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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83 | href="../common/perl.xml"
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84 | xpointer="xpointer(//*[@os='c2'])"/>
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85 |
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86 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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87 | href="../common/perl.xml"
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88 | xpointer="xpointer(//*[@os='c3'])"/>
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89 |
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90 | </variablelist>
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91 |
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92 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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93 | href="../common/perl.xml"
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94 | xpointer="xpointer(//*[@os='d'])"/>
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95 |
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96 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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97 | href="../common/perl.xml"
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98 | xpointer="xpointer(//*[@os='e'])"/>
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99 |
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100 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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101 | href="../common/perl.xml"
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102 | xpointer="xpointer(//*[@os='h'])"/>
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103 |
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104 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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105 | href="../common/perl.xml"
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106 | xpointer="xpointer(//*[@os='j'])"/>
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107 |
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108 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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109 | href="../common/perl.xml"
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110 | xpointer="xpointer(//*[@os='k'])"/>
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111 |
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112 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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113 | href="perl.xml"
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114 | xpointer="xpointer(//*[@os='l'])"/>
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115 |
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116 | <screen os="m"><userinput>mv /usr/bin/perl{,-64}</userinput></screen>
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117 |
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118 | <para os="n">Now we need to create a multilib wrapper that lets us choose
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119 | which perl installation to use.</para>
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120 |
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121 | <screen os="o"><userinput>cat > perl_wrapper.c << "EOF"
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122 | #include <stdio.h>
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123 | #include <stdlib.h>
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124 | #include <string.h>
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125 | #include <unistd.h>
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126 | #include <errno.h>
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127 |
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128 | int main (int argc, char *argv[])
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129 | {
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130 | char *perl_arch;
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131 | if ((perl_arch = getenv("PERL_ARCH")) == NULL)
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132 | perl_arch = "64";
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133 |
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134 | char *filename = malloc(strlen(argv[0]) + strlen(perl_arch) + 2);
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135 | strcpy(filename, argv[0]);
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136 | strcat(filename, "-");
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137 | strcat(filename, perl_arch);
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138 |
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139 | int ret = 0;
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140 | ret = execvp(filename, argv);
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141 | if ((ret != 0)&&(errno != 0))
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142 | {
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143 | char *errmsg = malloc(strlen(filename) + 19);
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144 | strcpy(errmsg, "Unable to execute ");
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145 | strcat(errmsg, filename);
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146 | perror(errmsg);
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147 | free(errmsg);
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148 | }
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149 |
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150 | free(filename);
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151 |
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152 | return ret;
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153 | }
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154 | EOF
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155 | gcc ${BUILD64} perl_wrapper.c -o /usr/bin/perl</userinput></screen>
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156 |
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157 | </sect2>
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158 |
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159 | <para os="p">This multilib wrapper makes it possible to build perl
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160 | extensions other then 64bit. The PERL_ARCH enviornment variable controls
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161 | which perl binary to execute. Some packages that may attempt to build
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162 | against perl will run <command>perl -V:cc</command> to get the command
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163 | that was used to build perl. If you're building a 32bit extension but you
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164 | only have a 64bit perl this is not desired. By setting PERL_ARCH=32 you
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165 | will beable to build the 32bit extension because
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166 | <command>perl -V:cc</command> will return the command used to build the
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167 | 32bit perl installation.</para>
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168 |
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169 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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170 | href="../common/perl.xml"
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171 | xpointer="xpointer(id('contents-perl'))"/>
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172 |
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173 | </sect1>
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