source: clfs-sysroot/BOOK/final-system/common/gcc.xml@ a2bcc79

Last change on this file since a2bcc79 was 7329dbe, checked in by Joe Ciccone <jciccone@…>, 16 years ago

Add the GCC Branch Update Patch.

  • Property mode set to 100644
File size: 8.4 KB
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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-gcc" role="wrap">
9 <?dbhtml filename="gcc.html"?>
10
11 <title>GCC-&gcc-version;</title>
12
13 <indexterm zone="ch-system-gcc">
14 <primary sortas="a-GCC">GCC</primary>
15 </indexterm>
16
17 <sect2 role="package">
18 <title/>
19
20 <para>The GCC package contains the GNU compiler collection, which includes
21 the C and C++ compilers.</para>
22
23 </sect2>
24
25 <sect2 role="installation">
26 <title>Installation of GCC</title>
27
28 <para os="p1">To make sure that a couple of tools use the proper syntax,
29 apply the following patch:</para>
30
31<screen os="p2"><userinput>patch -Np1 -i ../&gcc-posix-patch;</userinput></screen>
32
33 <para os="p3">The following patch contains a number of updates to the
34 &gcc-version; branch by the GCC developers:</para>
35
36<screen os="p4"><userinput>patch -Np1 -i ../&gcc-branch_update-patch;</userinput></screen>
37
38 <para os="a">Apply a <command>sed</command> substitution that will suppress the
39 installation of <filename class="libraryfile">libiberty.a</filename>. The
40 version of <filename class="libraryfile">libiberty.a</filename> provided by
41 Binutils will be used instead:</para>
42
43<screen os="b"><userinput>cp libiberty/Makefile.in{,.orig}
44sed 's/install_to_$(INSTALL_DEST) //' libiberty/Makefile.in.orig &gt; \
45 libiberty/Makefile.in</userinput></screen>
46
47 <para os="e1">GCC provides a <command>gccbug</command> script which detects at
48 compile time whether mktemp is present, and hardcodes the result in a test.
49 If mktemp is not found, the script will fall back to using less
50 random names for temporary files. We will be installing mktemp
51 later, so the following sed will simulate its presence:</para>
52
53<screen os="e2"><userinput>cp gcc/gccbug.in{,.orig}
54sed 's/@have_mktemp_command@/yes/' gcc/gccbug.in.orig > gcc/gccbug.in</userinput></screen>
55
56 <para os="s1">The fixincludes attempts to "fix" the system headers
57 installed so far. Since gcc is cross-compiled expecting the system
58 headers to be in <filename class="directory">/usr/include</filename>
59 the script will be looking at host headers. The following sed prevents
60 the fixincludes script from running:</para>
61
62<screen os="s2"><userinput>cp gcc/Makefile.in{,.orig}
63sed 's@\./fixinc\.sh@-c true@' gcc/Makefile.in.orig > gcc/Makefile.in</userinput></screen>
64
65 <para os="c">The GCC documentation recommends building GCC outside of the source
66 directory in a dedicated build directory:</para>
67
68<screen os="d"><userinput>mkdir -v ../gcc-build
69cd ../gcc-build</userinput></screen>
70
71 <para os="e">Prepare GCC for compilation:</para>
72
73<screen os="f"><userinput>../gcc-&gcc-version;/configure --prefix=/usr --libexecdir=/usr/lib \
74 --build=${CLFS_HOST} --host=${CLFS_TARGET} --target=${CLFS_TARGET} \
75 --enable-shared --enable-threads=posix --enable-__cxa_atexit \
76 --enable-c99 --enable-long-long --enable-clocale=gnu \
77 --enable-languages=c,c++ --disable-libstdcxx-pch</userinput></screen>
78
79 <para os="g">Compile the package:</para>
80
81<screen os="h"><userinput>make</userinput></screen>
82
83 <para os="i">Install the package:</para>
84
85<screen os="j"><userinput>make DESTDIR=${CLFS} install</userinput></screen>
86
87 <para os="k">Some packages expect the C preprocessor to be installed in the
88 <filename class="directory">/lib</filename> directory.
89 To support those packages, create this symlink:</para>
90
91<screen os="l"><userinput>ln -sfv ../usr/bin/cpp ${CLFS}/lib</userinput></screen>
92
93 <para os="m">Many packages use the name <command>cc</command> to call the C
94 compiler. To satisfy those packages, create a symlink:</para>
95
96<screen os="o"><userinput>ln -sfv gcc ${CLFS}/usr/bin/cc</userinput></screen>
97
98 </sect2>
99
100 <sect2 id="contents-gcc" role="content">
101 <title>Contents of GCC</title>
102
103 <segmentedlist>
104 <segtitle>Installed programs</segtitle>
105 <segtitle>Installed libraries</segtitle>
106
107 <seglistitem>
108 <seg>c++, cc (link to gcc), cpp, g++, gcc, gccbug, and gcov</seg>
109 <seg>libgcc.a, libgcc_eh.a, libgcc_s.so, libgomp.[a,so], libmudflap.[a,so],
110 libmudflapth.[a,so], libssp.[a,so], libstdc++.[a,so], and
111 libsupc++.a</seg>
112 </seglistitem>
113 </segmentedlist>
114
115 <variablelist>
116 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
117 <?dbfo list-presentation="list"?>
118 <?dbhtml list-presentation="table"?>
119
120 <varlistentry id="cc">
121 <term><command>cc</command></term>
122 <listitem>
123 <para>The C compiler</para>
124 <indexterm zone="ch-system-gcc cc">
125 <primary sortas="b-cc">cc</primary>
126 </indexterm>
127 </listitem>
128 </varlistentry>
129
130 <varlistentry id="cpp">
131 <term><command>cpp</command></term>
132 <listitem>
133 <para>The C preprocessor; it is used by the compiler to expand the
134 #include, #define, and similar statements in the source files</para>
135 <indexterm zone="ch-system-gcc cpp">
136 <primary sortas="b-cpp">cpp</primary>
137 </indexterm>
138 </listitem>
139 </varlistentry>
140
141 <varlistentry id="c">
142 <term><command>c++</command></term>
143 <listitem>
144 <para>The C++ compiler</para>
145 <indexterm zone="ch-system-gcc c">
146 <primary sortas="b-c++">c++</primary>
147 </indexterm>
148 </listitem>
149 </varlistentry>
150
151 <varlistentry id="g">
152 <term><command>g++</command></term>
153 <listitem>
154 <para>The C++ compiler</para>
155 <indexterm zone="ch-system-gcc g">
156 <primary sortas="b-g++">g++</primary>
157 </indexterm>
158 </listitem>
159 </varlistentry>
160
161 <varlistentry id="gcc">
162 <term><command>gcc</command></term>
163 <listitem>
164 <para>The C compiler</para>
165 <indexterm zone="ch-system-gcc gcc">
166 <primary sortas="b-gcc">gcc</primary>
167 </indexterm>
168 </listitem>
169 </varlistentry>
170
171 <varlistentry id="gccbug">
172 <term><command>gccbug</command></term>
173 <listitem>
174 <para>A shell script used to help create useful bug reports</para>
175 <indexterm zone="ch-system-gcc gccbug">
176 <primary sortas="b-gccbug">gccbug</primary>
177 </indexterm>
178 </listitem>
179 </varlistentry>
180
181 <varlistentry id="gcov">
182 <term><command>gcov</command></term>
183 <listitem>
184 <para>A coverage testing tool; it is used to analyze programs to
185 determine where optimizations will have the most effect</para>
186 <indexterm zone="ch-system-gcc gcov">
187 <primary sortas="b-gcov">gcov</primary>
188 </indexterm>
189 </listitem>
190 </varlistentry>
191
192 <varlistentry id="libgcc">
193 <term><filename class="libraryfile">libgcc</filename></term>
194 <listitem>
195 <para>Contains run-time support for <command>gcc</command></para>
196 <indexterm zone="ch-system-gcc libgcc">
197 <primary sortas="c-libgcc*">libgcc*</primary>
198 </indexterm>
199 </listitem>
200 </varlistentry>
201
202 <varlistentry id="libmudflap">
203 <term><filename class="libraryfile">libmudflap</filename></term>
204 <listitem>
205 <para>The libmudflap libraries are used by GCC for instrumenting
206 pointer and array dereferencing operations.</para>
207 <indexterm zone="ch-system-gcc libmudflap">
208 <primary sortas="c-libmudflap*">libmudflap*</primary>
209 </indexterm>
210 </listitem>
211 </varlistentry>
212
213 <varlistentry id="libstdc">
214 <term><filename class="libraryfile">libstdc++</filename></term>
215 <listitem>
216 <para>The standard C++ library</para>
217 <indexterm zone="ch-system-gcc libstdc">
218 <primary sortas="c-libstdc++">libstdc++</primary>
219 </indexterm>
220 </listitem>
221 </varlistentry>
222
223 <varlistentry id="libsupc">
224 <term><filename class="libraryfile">libsupc++</filename></term>
225 <listitem>
226 <para>Provides supporting routines for the C++ programming
227 language</para>
228 <indexterm zone="ch-system-gcc libsupc">
229 <primary sortas="c-libsupc++">libsupc++</primary>
230 </indexterm>
231 </listitem>
232 </varlistentry>
233
234 </variablelist>
235
236 </sect2>
237
238</sect1>
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