source: chapter08/libffi.xml@ d672ab7

11.1 11.1-rc1 arm multilib s6-init trunk xry111/clfs-ng xry111/lfs-next
Last change on this file since d672ab7 was d672ab7, checked in by Pierre Labastie <pierre.labastie@…>, 11 months ago

Remove spaces at end o lines - chapter08

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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../general.ent">
5 %general-entities;
6]>
7
8<sect1 id="ch-system-libffi" role="wrap">
9 <?dbhtml filename="libffi.html"?>
10
11 <sect1info condition="script">
12 <productname>libffi</productname>
13 <productnumber>&libffi-version;</productnumber>
14 <address>&libffi-url;</address>
15 </sect1info>
16
17 <title>Libffi-&libffi-version;</title>
18
19 <indexterm zone="ch-system-libffi">
20 <primary sortas="a-libffi">libffi</primary>
21 </indexterm>
22
23 <sect2 role="package">
24 <title/>
25
26 <para>The Libffi library provides a portable, high level programming
27 interface to various calling conventions. This allows a programmer to call
28 any function specified by a call interface description at run time.</para>
29
30 <segmentedlist>
31 <segtitle>&buildtime;</segtitle>
32 <segtitle>&diskspace;</segtitle>
33
34 <seglistitem>
35 <seg>&libffi-fin-sbu;</seg>
36 <seg>&libffi-fin-du;</seg>
37 </seglistitem>
38 </segmentedlist>
39
40 </sect2>
41
42 <sect2 role="installation">
43 <title>Installation of Libffi</title>
44
45 <note>
46 <para>Similar to GMP, libffi builds with optimizations specific
47 to the proccesor in use. If building for another system, export
48 CFLAGS and CXXFLAGS to specify a generic build for your architecture.
49 If this is not done, all applications that link to libffi will trigger
50 Illegal Operation Errors.</para>
51 </note>
52
53 <para>Prepare libffi for compilation:</para>
54
55 <screen><userinput remap="configure">./configure --prefix=/usr \
56 --disable-static \
57 --with-gcc-arch=native \
58 --disable-exec-static-tramp</userinput></screen>
59
60 <variablelist>
61 <title>The meaning of the configure option:</title>
62
63 <varlistentry>
64 <term><parameter>--with-gcc-arch=native</parameter></term>
65 <listitem>
66 <para>Ensure GCC optimizes for the current system. If this
67 is not specified, the system is guessed and the code generated
68 may not be correct for some systems. If the generated code
69 will be copied from the native system to a less capable
70 system, use the less capable system as a parameter. For details
71 about alternative system types, see <ulink
72 url='https://gcc.gnu.org/onlinedocs/gcc-&gcc-version;/gcc/x86-Options.html'>
73 the x86 options in the GCC manual</ulink>.</para>
74 </listitem>
75 </varlistentry>
76
77 <varlistentry>
78 <!-- To editors: remove it when downstreams are properly
79 fixed. -->
80 <term><parameter>--disable-exec-static-tramp</parameter></term>
81 <listitem>
82 <para>Disable static trampoline support. It's a new security
83 feature in libffi, but some BLFS packages (notably
84 <application>GJS</application> and
85 <application>gobject-introspection</application>) have not been
86 adapted for it.</para>
87 </listitem>
88 </varlistentry>
89
90 </variablelist>
91
92 <para>Compile the package:</para>
93
94<screen><userinput remap="make">make</userinput></screen>
95
96 <para>To test the results, issue:</para>
97
98<screen><userinput remap="test">make check</userinput></screen>
99
100 <para>Install the package:</para>
101
102<screen><userinput remap="install">make install</userinput></screen>
103
104 </sect2>
105
106 <sect2 id="contents-libffi" role="content">
107 <title>Contents of Libffi</title>
108
109 <segmentedlist>
110 <segtitle>Installed library</segtitle>
111
112 <seglistitem>
113 <seg>libffi.so</seg>
114 </seglistitem>
115 </segmentedlist>
116
117 <variablelist>
118 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
119 <?dbfo list-presentation="list"?>
120 <?dbhtml list-presentation="table"?>
121
122 <varlistentry id="libffi">
123 <term><filename class="libraryfile">libffi</filename></term>
124 <listitem>
125 <para>contains the foreign function interface API functions</para>
126 <indexterm zone="ch-system-libffi">
127 <primary sortas="c-libffi">libffi</primary>
128 </indexterm>
129 </listitem>
130 </varlistentry>
131 </variablelist>
132
133 </sect2>
134
135</sect1>
136
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