source: clfs-embedded/BOOK/cross-tools/common/gcc-static.xml@ 49c9bc5

Last change on this file since 49c9bc5 was d5c7418, checked in by Andrew Bradford <bradfa@…>, 14 years ago

Changed BUILD variable name to CLFS_ABI

It better represents what the variable stands for.
It picks the ABI to use when compiling GCC.
  • Property mode set to 100644
File size: 8.4 KB
Line 
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-cross-tools-gcc-static" role="wrap">
9 <?dbhtml filename="gcc-static.html"?>
10
11 <title>Cross GCC-&gcc-version; - Static</title>
12
13 <indexterm zone="ch-cross-tools-gcc-static">
14 <primary sortas="a-GCC">GCC</primary>
15 <secondary>cross tools, static</secondary>
16 </indexterm>
17
18 <sect2 role="package">
19 <title/>
20
21 <para>The GCC package contains the GNU compiler collection, which includes
22 the C and C++ compilers.</para>
23
24 </sect2>
25
26 <sect2 role="installation">
27 <title>Installation of Cross GCC Compiler with Static libgcc
28 and no Threads</title>
29
30 <para os="c">The GCC documentation recommends building GCC outside of the source
31 directory in a dedicated build directory:</para>
32
33<screen os="d"><userinput>mkdir -v ../gcc-build
34cd ../gcc-build</userinput></screen>
35
36 <para os="e">Prepare GCC for compilation:</para>
37
38<screen os="ae"><userinput>AR=ar LDFLAGS="-Wl,-rpath,${CLFS}/cross-tools/lib" \
39 ../gcc-&gcc-version;/configure --prefix=${CLFS}/cross-tools \
40 --build=${CLFS_HOST} --host=${CLFS_HOST} --target=${CLFS_TARGET} \
41 --with-sysroot=${CLFS} --disable-nls --disable-shared \
42 --with-mpfr=${CLFS}/cross-tools --with-gmp=${CLFS}/cross-tools \
43 --with-mpc=${CLFS}/cross-tools --without-headers --with-newlib \
44 --disable-decimal-float --disable-libgomp --disable-libmudflap \
45 --disable-libssp --disable-threads --enable-languages=c \
46 --with-abi=${CLFS_ABI}</userinput></screen>
47
48 <variablelist os="af">
49 <title>The meaning of the configure options:</title>
50
51 <varlistentry os="af1">
52 <term><parameter>--prefix=${CLFS}/cross-tools</parameter></term>
53 <listitem>
54 <para>This tells the configure script to prepare to install the
55 package in the <filename class="directory">${CLFS}/cross-tools</filename>
56 directory.</para>
57 </listitem>
58 </varlistentry>
59
60 <varlistentry os="af2">
61 <term><parameter>--build=${CLFS_HOST}</parameter></term>
62 <listitem>
63 <para>This tells the configure script the triplet to use to build GCC.
64 It will use ${CLFS_HOST} as that's where it's being built.</para>
65 </listitem>
66 </varlistentry>
67
68 <varlistentry os="af3">
69 <term><parameter>--host=${CLFS_HOST}</parameter></term>
70 <listitem>
71 <para>This tells the configure script the triplet of the machine GCC
72 will be executed on when actually cross compiling. It will use
73 ${CLFS_HOST} as that's where GCC will execute when cross compiling
74 software later.</para>
75 </listitem>
76 </varlistentry>
77
78 <varlistentry os="af4">
79 <term><parameter>--target=${CLFS_TARGET}</parameter></term>
80 <listitem>
81 <para>This tells the configure script the triplet of the machine GCC
82 will build executables for. It will use ${CLFS_TARGET} so that software
83 compiled with this version of GCC can be executed on the embedded machine
84 target.</para>
85 </listitem>
86 </varlistentry>
87
88 <varlistentry os="af5">
89 <term><parameter>--with-sysroot=${CLFS}</parameter></term>
90 <listitem>
91 <para>This tells configure that ${CLFS} is going to be the root
92 of our system. It will now use the specified sysroot, ${CLFS}, as
93 a prefix of the default search paths.</para>
94 </listitem>
95 </varlistentry>
96
97 <varlistentry os="af6">
98 <term><parameter>--disable-nls</parameter></term>
99 <listitem>
100 <para>This disables internationalization as i18n is not needed for the
101 cross-compile tools.</para>
102 </listitem>
103 </varlistentry>
104
105 <varlistentry os="af7">
106 <term><parameter>--disable-shared</parameter></term>
107 <listitem>
108 <para>Disables the creation of the shared libraries.</para>
109 </listitem>
110 </varlistentry>
111
112 <varlistentry os="af8">
113 <term><parameter>--with-mpfr=${CLFS}/cross-tools</parameter></term>
114 <listitem>
115 <para>Tells configure where to find the
116 <filename class="directory">lib</filename> and
117 <filename class="directory">include</filename> directories
118 that contain MPFR which was built earlier.</para>
119 </listitem>
120 </varlistentry>
121
122 <varlistentry os="af9">
123 <term><parameter>--with-gmp=${CLFS}/cross-tools</parameter></term>
124 <listitem>
125 <para>Tells configure where to find the
126 <filename class="directory">lib</filename> and
127 <filename class="directory">include</filename> directories
128 that contain GMP which was built earlier.</para>
129 </listitem>
130 </varlistentry>
131
132 <varlistentry os="af10">
133 <term><parameter>--with-mpc=${CLFS}/cross-tools</parameter></term>
134 <listitem>
135 <para>Tells configure where to find the
136 <filename class="directory">lib</filename> and
137 <filename class="directory">include</filename> directories
138 that contain MPC which was built earlier.</para>
139 </listitem>
140 </varlistentry>
141
142 <varlistentry os="af11">
143 <term><parameter>--without-headers</parameter></term>
144 <listitem>
145 <para>Tells configure to not use any headers from any C libraries.
146 This is needed as we haven't yet built the C library and to prevent
147 influence from the host environment.</para>
148 </listitem>
149 </varlistentry>
150
151 <varlistentry os="af12">
152 <term><parameter>--with-newlib</parameter></term>
153 <listitem>
154 <para>Tells configure to build libgcc without needing any C
155 libraries.</para>
156 </listitem>
157 </varlistentry>
158
159 <varlistentry os="af13">
160 <term><parameter>--disable-decimal-float</parameter></term>
161 <listitem>
162 <para>Tells configure to disable IEEE 754-2008 decimal floating
163 point support. Decimal floating point support isn't needed yet.</para>
164 </listitem>
165 </varlistentry>
166
167 <varlistentry os="af14">
168 <term><parameter>--disable-libgomp</parameter></term>
169 <listitem>
170 <para>Tells configure to not build the GOMP run-time libraries.
171 GOMP is the GNU implementation of OpenMP, a API for shared-memory
172 parallel programming.</para>
173 </listitem>
174 </varlistentry>
175
176 <varlistentry os="af15">
177 <term><parameter>--disable-libmudflap</parameter></term>
178 <listitem>
179 <para>Tells configure to not build libmudflap. Mudflap is a
180 library that can be used to help check for proper pointer usage.</para>
181 </listitem>
182 </varlistentry>
183
184 <varlistentry os="af16">
185 <term><parameter>--disable-libssp</parameter></term>
186 <listitem>
187 <para>Tells configure not to build run-time libraries for stack
188 smashing detection.</para>
189 </listitem>
190 </varlistentry>
191
192 <varlistentry os="af17">
193 <term><parameter>--disable-threads</parameter></term>
194 <listitem>
195 <para>This will prevent GCC from looking for the multi-thread
196 include files, since they haven't been created for this architecture
197 yet. GCC will be able to find the multi-thread information after
198 the glib headers are created.</para>
199 </listitem>
200 </varlistentry>
201
202 <varlistentry os="af18">
203 <term><parameter>--enable-languages=c</parameter></term>
204 <listitem>
205 <para>This option ensures that only the C compiler is built.</para>
206 </listitem>
207 </varlistentry>
208
209 <varlistentry os="af19">
210 <term><parameter>--with-abi=${CLFS_ABI}</parameter></term>
211 <listitem>
212 <para>This option sets the ABI selected earlier.</para>
213 </listitem>
214 </varlistentry>
215
216 </variablelist>
217
218 <para os="ag">Continue with compiling the package:</para>
219
220<screen os="ah"><userinput>make all-gcc all-target-libgcc</userinput></screen>
221
222 <para os="ai">Install the package:</para>
223
224<screen os="aj"><userinput>make install-gcc install-target-libgcc</userinput></screen>
225
226 </sect2>
227
228 <sect2 role="content">
229 <title/>
230
231 <para>Details on this package are located in <xref
232 linkend="contents-gcc" role="."/></para>
233
234 </sect2>
235
236</sect1>
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