source: clfs-sysroot/BOOK/final-system/common/gcc.xml @ ae07b0c

Last change on this file since ae07b0c was ae07b0c, checked in by Joe Ciccone <jciccone@…>, 16 years ago

Update of the text on the GCC PR20425 Patch.

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File size: 8.1 KB
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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
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-4.1.1-posix-1.patch</userinput></screen>
32
33    <para os="p3">The following patch fixes the searching of multilib dirs for
34    specs file.The patch standardizes the gcc drivers path iteration functions,
35    ensuring multilib directories are searched in the correct order. This fixes
36    various issues, most noticably with libtool on multilib systems:</para>
37
38<screen os="p4"><userinput>patch -Np1 -i ../&gcc-PR20425-patch;</userinput></screen>
39
40    <para os="a">Apply a <command>sed</command> substitution that will suppress the
41    installation of <filename class="libraryfile">libiberty.a</filename>. The
42    version of <filename class="libraryfile">libiberty.a</filename> provided by
43    Binutils will be used instead:</para>
44
45<screen os="b"><userinput>cp libiberty/Makefile.in{,.orig}
46sed 's/install_to_$(INSTALL_DEST) //' libiberty/Makefile.in.orig > libiberty/Makefile.in</userinput></screen>
47
48    <para os="e1">GCC provides a <command>gccbug</command> script which detects at
49    compile time whether mktemp is present, and hardcodes the result in a test.
50    If mktemp is not found, the script will fall back to using less
51    random names for temporary files.  We will be installing mktemp
52    later, so the following sed will simulate its presence:</para>
53
54<screen os="e2"><userinput>cp gcc/gccbug.in{,.orig}
55sed 's/@have_mktemp_command@/yes/' gcc/gccbug.in.orig > gcc/gccbug.in</userinput></screen>
56
57    <para os="c">The GCC documentation recommends building GCC outside of the source
58    directory in a dedicated build directory:</para>
59
60<screen os="d"><userinput>mkdir -v ../gcc-build
61cd ../gcc-build</userinput></screen>
62
63    <para os="e">Prepare GCC for compilation:</para>
64
65<screen os="f"><userinput>../gcc-&gcc-version;/configure --prefix=/usr --libexecdir=/usr/lib \
66    --build=${CLFS_HOST} --host=${CLFS_TARGET} --target=${CLFS_TARGET} \
67    --enable-shared --enable-threads=posix --enable-__cxa_atexit \
68    --enable-c99 --enable-long-long --enable-clocale=gnu \
69    --enable-languages=c,c++ --disable-libstdcxx-pch</userinput></screen>
70
71    <para os="g">Compile the package:</para>
72
73<screen os="h"><userinput>make</userinput></screen>
74
75    <para os="i">Install the package:</para>
76
77<screen os="j"><userinput>make DESTDIR=${CLFS} install</userinput></screen>
78
79    <para os="k">Some packages expect the C preprocessor to be installed in the
80    <filename class="directory">/lib</filename> directory.
81    To support those packages, create this symlink:</para>
82
83<screen os="l"><userinput>ln -sv ../usr/bin/cpp ${CLFS}/lib</userinput></screen>
84
85    <para os="m">Many packages use the name <command>cc</command> to call the C
86    compiler. To satisfy those packages, create a symlink:</para>
87
88<screen os="o"><userinput>ln -sv gcc ${CLFS}/usr/bin/cc</userinput></screen>
89
90  </sect2>
91
92  <sect2 id="contents-gcc" role="content">
93    <title>Contents of GCC</title>
94
95    <segmentedlist>
96      <segtitle>Installed programs</segtitle>
97      <segtitle>Installed libraries</segtitle>
98
99      <seglistitem>
100        <seg>c++, cc (link to gcc), cpp, g++, gcc, gccbug, and gcov</seg>
101        <seg>libgcc.a, libgcc_eh.a, libgcc_s.so, libmudflap.[a,so],
102        libmudflapth.[a,so], libstdc++.[a,so], and
103        libsupc++.a</seg>
104      </seglistitem>
105    </segmentedlist>
106
107    <variablelist>
108      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
109      <?dbfo list-presentation="list"?>
110      <?dbhtml list-presentation="table"?>
111
112      <varlistentry id="cc">
113        <term><command>cc</command></term>
114        <listitem>
115          <para>The C compiler</para>
116          <indexterm zone="ch-system-gcc cc">
117            <primary sortas="b-cc">cc</primary>
118          </indexterm>
119        </listitem>
120      </varlistentry>
121
122      <varlistentry id="cpp">
123        <term><command>cpp</command></term>
124        <listitem>
125          <para>The C preprocessor; it is used by the compiler to expand the
126          #include, #define, and similar statements in the source files</para>
127          <indexterm zone="ch-system-gcc cpp">
128            <primary sortas="b-cpp">cpp</primary>
129          </indexterm>
130        </listitem>
131      </varlistentry>
132
133      <varlistentry id="c">
134        <term><command>c++</command></term>
135        <listitem>
136          <para>The C++ compiler</para>
137          <indexterm zone="ch-system-gcc c">
138            <primary sortas="b-c++">c++</primary>
139          </indexterm>
140        </listitem>
141      </varlistentry>
142
143      <varlistentry id="g">
144        <term><command>g++</command></term>
145        <listitem>
146          <para>The C++ compiler</para>
147          <indexterm zone="ch-system-gcc g">
148            <primary sortas="b-g++">g++</primary>
149          </indexterm>
150        </listitem>
151      </varlistentry>
152
153      <varlistentry id="gcc">
154        <term><command>gcc</command></term>
155        <listitem>
156          <para>The C compiler</para>
157          <indexterm zone="ch-system-gcc gcc">
158            <primary sortas="b-gcc">gcc</primary>
159          </indexterm>
160        </listitem>
161      </varlistentry>
162
163      <varlistentry id="gccbug">
164        <term><command>gccbug</command></term>
165        <listitem>
166          <para>A shell script used to help create useful bug reports</para>
167          <indexterm zone="ch-system-gcc gccbug">
168            <primary sortas="b-gccbug">gccbug</primary>
169          </indexterm>
170        </listitem>
171      </varlistentry>
172
173      <varlistentry id="gcov">
174        <term><command>gcov</command></term>
175        <listitem>
176          <para>A coverage testing tool; it is used to analyze programs to
177          determine where optimizations will have the most effect</para>
178          <indexterm zone="ch-system-gcc gcov">
179            <primary sortas="b-gcov">gcov</primary>
180          </indexterm>
181        </listitem>
182      </varlistentry>
183
184      <varlistentry id="libgcc">
185        <term><filename class="libraryfile">libgcc</filename></term>
186        <listitem>
187          <para>Contains run-time support for <command>gcc</command></para>
188          <indexterm zone="ch-system-gcc libgcc">
189            <primary sortas="c-libgcc*">libgcc*</primary>
190          </indexterm>
191        </listitem>
192      </varlistentry>
193
194      <varlistentry id="libmudflap">
195        <term><filename class="libraryfile">libmudflap</filename></term>
196        <listitem>
197          <para>The libmudflap libraries are used by GCC for instrumenting
198          pointer and array dereferencing operations.</para>
199          <indexterm zone="ch-system-gcc libmudflap">
200            <primary sortas="c-libmudflap*">libmudflap*</primary>
201          </indexterm>
202        </listitem>
203      </varlistentry>
204
205      <varlistentry id="libstdc">
206        <term><filename class="libraryfile">libstdc++</filename></term>
207        <listitem>
208          <para>The standard C++ library</para>
209          <indexterm zone="ch-system-gcc libstdc">
210            <primary sortas="c-libstdc++">libstdc++</primary>
211          </indexterm>
212        </listitem>
213      </varlistentry>
214
215      <varlistentry id="libsupc">
216        <term><filename class="libraryfile">libsupc++</filename></term>
217        <listitem>
218          <para>Provides supporting routines for the C++ programming
219          language</para>
220          <indexterm zone="ch-system-gcc libsupc">
221            <primary sortas="c-libsupc++">libsupc++</primary>
222          </indexterm>
223        </listitem>
224      </varlistentry>
225
226    </variablelist>
227
228  </sect2>
229
230</sect1>
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