source: final-system/common/gcc.xml@ 5c05e8f

Last change on this file since 5c05e8f was fd1c294, checked in by Jim Gifford <clfs@…>, 18 years ago

r4560@server: jim | 2006-07-13 08:29:12 -0700
Update of text on GCC Patch PR20425

  • Property mode set to 100644
File size: 8.6 KB
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[bf8c11f]1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
3 "http://www.oasis-open.org/docbook/xml/4.4/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
[6c605d7]28 <para os="p1">The following patch fixes the searching of multilib dirs for
[fd1c294]29 specs file. The patch standardizes the gcc drivers path iteration functions,
30 ensuring multilib directories are searched in the correct order. This fixes
31 various issues, most noticably with libtool on multilib systems:</para>
[ec33b65f]32
[6c605d7]33<screen os="p2"><userinput>patch -Np1 -i ../&gcc-PR20425-patch;</userinput></screen>
[ec33b65f]34
[bf8c11f]35 <para os="d">Apply a <command>sed</command> substitution that will suppress the
36 installation of <filename class="libraryfile">libiberty.a</filename>. The
37 version of <filename class="libraryfile">libiberty.a</filename> provided by
38 Binutils will be used instead:</para>
39
40<screen os="e"><userinput>sed -i 's/install_to_$(INSTALL_DEST) //' libiberty/Makefile.in</userinput></screen>
41
[9be8160]42 <para os="e1">GCC provides a <command>gccbug</command> script which detects at
43 compile time whether mktemp is present, and hardcodes the result in a test.
[2ab0d61]44 If mktemp is not found, the script will fall back to using less
45 random names for temporary files. We will be installing mktemp
46 later, so the following sed will simulate its presence:</para>
[9be8160]47
[62c1c5dd]48<screen os="e2"><userinput>sed -i 's/@have_mktemp_command@/yes/' gcc/gccbug.in</userinput></screen>
[9be8160]49
[bf8c11f]50 <para os="f">The GCC documentation recommends building GCC outside of the source
51 directory in a dedicated build directory:</para>
52
[dd9906e]53<screen os="g"><userinput>mkdir -v ../gcc-build
[bf8c11f]54cd ../gcc-build</userinput></screen>
55
56 <para os="h">Prepare GCC for compilation:</para>
57
[1b823a37]58<screen os="i"><userinput>../gcc-&gcc-version;/configure --prefix=/usr \
[bf8c11f]59 --libexecdir=/usr/lib --enable-shared --enable-threads=posix \
60 --enable-__cxa_atexit --enable-c99 --enable-long-long \
[11a722f]61 --enable-clocale=gnu --enable-languages=c,c++ \
[adeb68a]62 --disable-multilib --disable-libstdcxx-pch</userinput></screen>
[bf8c11f]63
[1b823a37]64 <para os="j">Compile the package:</para>
[bf8c11f]65
[c5ff986]66<screen os="k"><userinput>make bootstrap</userinput></screen>
[bf8c11f]67
[1b823a37]68 <important os="l">
[4394b64]69 <para>The test suite for GCC is considered
[bf8c11f]70 critical. Do not skip it under any circumstance.</para>
71 </important>
72
[1b823a37]73 <para os="m">Test the results, but do not stop at errors:</para>
[bf8c11f]74
[1b823a37]75<screen os="n"><userinput>make -k check</userinput></screen>
[bf8c11f]76
[1b823a37]77 <para os="o">The <parameter>-k</parameter> flag is used to make the test suite
[bf8c11f]78 run through to completion and not stop at the first failure. The GCC test
79 suite is very comprehensive and is almost guaranteed to generate a few
80 failures. To receive a summary of the test suite results, run:</para>
81
[1b823a37]82<screen os="p"><userinput>../gcc-&gcc-version;/contrib/test_summary</userinput></screen>
[bf8c11f]83
[1b823a37]84 <para os="q">For only the summaries, pipe the output through
[bf8c11f]85 <userinput>grep -A7 Summ</userinput>.</para>
86
87 <para os="r">A few unexpected failures cannot always be avoided. The
88 GCC developers are usually aware of these issues, but have not
[1b823a37]89 resolved them yet.</para>
[bf8c11f]90
91 <para os="s">Install the package:</para>
92
93<screen os="t"><userinput>make install</userinput></screen>
94
95 <para os="u">Some packages expect the C preprocessor to be installed in the
96 <filename class="directory">/lib</filename> directory.
97 To support those packages, create this symlink:</para>
98
[dd9906e]99<screen os="v"><userinput>ln -sv ../usr/bin/cpp /lib</userinput></screen>
[bf8c11f]100
101 <para os="w">Many packages use the name <command>cc</command> to call the C
102 compiler. To satisfy those packages, create a symlink:</para>
103
[dd9906e]104<screen os="x"><userinput>ln -sv gcc /usr/bin/cc</userinput></screen>
[bf8c11f]105
106 </sect2>
107
108 <sect2 id="contents-gcc" role="content">
109 <title>Contents of GCC</title>
110
111 <segmentedlist>
112 <segtitle>Installed programs</segtitle>
113 <segtitle>Installed libraries</segtitle>
114
115 <seglistitem>
116 <seg>c++, cc (link to gcc), cpp, g++, gcc, gccbug, and gcov</seg>
[1b823a37]117 <seg>libgcc.a, libgcc_eh.a, libgcc_s.so, libmudflap.[a,so],
118 libmudflapth.[a,so], libstdc++.[a,so], and
[bf8c11f]119 libsupc++.a</seg>
120 </seglistitem>
121 </segmentedlist>
122
123 <variablelist>
124 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
125 <?dbfo list-presentation="list"?>
126 <?dbhtml list-presentation="table"?>
127
128 <varlistentry id="cc">
129 <term><command>cc</command></term>
130 <listitem>
131 <para>The C compiler</para>
132 <indexterm zone="ch-system-gcc cc">
133 <primary sortas="b-cc">cc</primary>
134 </indexterm>
135 </listitem>
136 </varlistentry>
137
138 <varlistentry id="cpp">
139 <term><command>cpp</command></term>
140 <listitem>
141 <para>The C preprocessor; it is used by the compiler to expand the
142 #include, #define, and similar statements in the source files</para>
143 <indexterm zone="ch-system-gcc cpp">
144 <primary sortas="b-cpp">cpp</primary>
145 </indexterm>
146 </listitem>
147 </varlistentry>
148
149 <varlistentry id="c">
150 <term><command>c++</command></term>
151 <listitem>
152 <para>The C++ compiler</para>
153 <indexterm zone="ch-system-gcc c">
154 <primary sortas="b-c++">c++</primary>
155 </indexterm>
156 </listitem>
157 </varlistentry>
158
159 <varlistentry id="g">
160 <term><command>g++</command></term>
161 <listitem>
162 <para>The C++ compiler</para>
163 <indexterm zone="ch-system-gcc g">
164 <primary sortas="b-g++">g++</primary>
165 </indexterm>
166 </listitem>
167 </varlistentry>
168
169 <varlistentry id="gcc">
170 <term><command>gcc</command></term>
171 <listitem>
172 <para>The C compiler</para>
173 <indexterm zone="ch-system-gcc gcc">
174 <primary sortas="b-gcc">gcc</primary>
175 </indexterm>
176 </listitem>
177 </varlistentry>
178
179 <varlistentry id="gccbug">
180 <term><command>gccbug</command></term>
181 <listitem>
182 <para>A shell script used to help create useful bug reports</para>
183 <indexterm zone="ch-system-gcc gccbug">
184 <primary sortas="b-gccbug">gccbug</primary>
185 </indexterm>
186 </listitem>
187 </varlistentry>
188
189 <varlistentry id="gcov">
190 <term><command>gcov</command></term>
191 <listitem>
192 <para>A coverage testing tool; it is used to analyze programs to
193 determine where optimizations will have the most effect</para>
194 <indexterm zone="ch-system-gcc gcov">
195 <primary sortas="b-gcov">gcov</primary>
196 </indexterm>
197 </listitem>
198 </varlistentry>
199
200 <varlistentry id="libgcc">
201 <term><filename class="libraryfile">libgcc</filename></term>
202 <listitem>
203 <para>Contains run-time support for <command>gcc</command></para>
204 <indexterm zone="ch-system-gcc libgcc">
205 <primary sortas="c-libgcc*">libgcc*</primary>
206 </indexterm>
207 </listitem>
208 </varlistentry>
209
[4dea801f]210 <varlistentry id="libmudflap">
211 <term><filename class="libraryfile">libmudflap</filename></term>
212 <listitem>
213 <para>The libmudflap libraries are used by GCC for instrumenting
[155e089]214 pointer and array dereferencing operations.</para>
[4dea801f]215 <indexterm zone="ch-system-gcc libmudflap">
216 <primary sortas="c-libmudflap*">libmudflap*</primary>
217 </indexterm>
218 </listitem>
219 </varlistentry>
220
[bf8c11f]221 <varlistentry id="libstdc">
222 <term><filename class="libraryfile">libstdc++</filename></term>
223 <listitem>
224 <para>The standard C++ library</para>
225 <indexterm zone="ch-system-gcc libstdc">
226 <primary sortas="c-libstdc++">libstdc++</primary>
227 </indexterm>
228 </listitem>
229 </varlistentry>
230
231 <varlistentry id="libsupc">
232 <term><filename class="libraryfile">libsupc++</filename></term>
233 <listitem>
234 <para>Provides supporting routines for the C++ programming
235 language</para>
236 <indexterm zone="ch-system-gcc libsupc">
237 <primary sortas="c-libsupc++">libsupc++</primary>
238 </indexterm>
239 </listitem>
240 </varlistentry>
241
242 </variablelist>
243
244 </sect2>
245
246</sect1>
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