source: clfs-embedded/BOOK/cross-tools/common/gcc-static.xml@ e1ec8ed

Last change on this file since e1ec8ed was 0f33b23, checked in by Andrew Bradford <bradfa@…>, 14 years ago

Made --disable-multilib common for GCC-Static

All archs now have --disable-multilib for GCC-Static.
As of this commit, building this way on ARM and MIPS may produce a
toolchain with undesirable selections. This will be fixed, soon.
  • Property mode set to 100644
File size: 8.6 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<!-- Common GCC-Static -->
9
10<sect1 id="ch-cross-tools-gcc-static" role="wrap">
11 <?dbhtml filename="gcc-static.html"?>
12
13 <title>Cross GCC-&gcc-version; - Static</title>
14
15 <indexterm zone="ch-cross-tools-gcc-static">
16 <primary sortas="a-GCC">GCC</primary>
17 <secondary>cross tools, static</secondary>
18 </indexterm>
19
20 <sect2 role="package">
21 <title/>
22
23 <para>The GCC package contains the GNU compiler collection, which includes
24 the C and C++ compilers.</para>
25
26 </sect2>
27
28 <sect2 role="installation">
29 <title os="a">Installation of Cross GCC Compiler with Static libgcc
30 and no Threads</title>
31
32 <para os="c">The GCC documentation recommends building GCC outside of the source
33 directory in a dedicated build directory:</para>
34
35<screen os="d"><userinput>mkdir -v ../gcc-build
36cd ../gcc-build</userinput></screen>
37
38 <para os="e">Prepare GCC for compilation:</para>
39
40<!-- This is the common configure line for GCC-Static. -->
41<!-- It's not actually used by any arch but is here for reference. -->
42<screen os="ae"><userinput>AR=ar LDFLAGS="-Wl,-rpath,${CLFS}/cross-tools/lib" \
43 ../gcc-&gcc-version;/configure --prefix=${CLFS}/cross-tools \
44 --build=${CLFS_HOST} --host=${CLFS_HOST} --target=${CLFS_TARGET} \
45 --with-sysroot=${CLFS} --disable-nls --disable-shared \
46 --with-mpfr=${CLFS}/cross-tools --with-gmp=${CLFS}/cross-tools \
47 --with-mpc=${CLFS}/cross-tools --without-headers --with-newlib \
48 --disable-decimal-float --disable-libgomp --disable-libmudflap \
49 --disable-libssp --disable-threads --enable-languages=c \
50 --disable-multilib</userinput></screen>
51
52 <variablelist os="af">
53 <title>The meaning of the configure options:</title>
54
55 <varlistentry os="af1">
56 <term><parameter>--prefix=${CLFS}/cross-tools</parameter></term>
57 <listitem>
58 <para>This tells the configure script to prepare to install the
59 package in the <filename class="directory">${CLFS}/cross-tools</filename>
60 directory.</para>
61 </listitem>
62 </varlistentry>
63
64 <varlistentry os="af2">
65 <term><parameter>--build=${CLFS_HOST}</parameter></term>
66 <listitem>
67 <para>This tells the configure script the triplet to use to build GCC.
68 It will use ${CLFS_HOST} as that's where it's being built.</para>
69 </listitem>
70 </varlistentry>
71
72 <varlistentry os="af3">
73 <term><parameter>--host=${CLFS_HOST}</parameter></term>
74 <listitem>
75 <para>This tells the configure script the triplet of the machine GCC
76 will be executed on when actually cross compiling. It will use
77 ${CLFS_HOST} as that's where GCC will execute when cross compiling
78 software later.</para>
79 </listitem>
80 </varlistentry>
81
82 <varlistentry os="af4">
83 <term><parameter>--target=${CLFS_TARGET}</parameter></term>
84 <listitem>
85 <para>This tells the configure script the triplet of the machine GCC
86 will build executables for. It will use ${CLFS_TARGET} so that software
87 compiled with this version of GCC can be executed on the embedded machine
88 target.</para>
89 </listitem>
90 </varlistentry>
91
92 <varlistentry os="af5">
93 <term><parameter>--with-sysroot=${CLFS}</parameter></term>
94 <listitem>
95 <para>This tells configure that ${CLFS} is going to be the root
96 of our system. It will now use the specified sysroot, ${CLFS}, as
97 a prefix of the default search paths.</para>
98 </listitem>
99 </varlistentry>
100
101 <varlistentry os="af6">
102 <term><parameter>--disable-nls</parameter></term>
103 <listitem>
104 <para>This disables internationalization as i18n is not needed for the
105 cross-compile tools.</para>
106 </listitem>
107 </varlistentry>
108
109 <varlistentry os="af7">
110 <term><parameter>--disable-shared</parameter></term>
111 <listitem>
112 <para>Disables the creation of the shared libraries.</para>
113 </listitem>
114 </varlistentry>
115
116 <varlistentry os="af8">
117 <term><parameter>--with-mpfr=${CLFS}/cross-tools</parameter></term>
118 <listitem>
119 <para>Tells configure where to find the
120 <filename class="directory">lib</filename> and
121 <filename class="directory">include</filename> directories
122 that contain MPFR which was built earlier.</para>
123 </listitem>
124 </varlistentry>
125
126 <varlistentry os="af9">
127 <term><parameter>--with-gmp=${CLFS}/cross-tools</parameter></term>
128 <listitem>
129 <para>Tells configure where to find the
130 <filename class="directory">lib</filename> and
131 <filename class="directory">include</filename> directories
132 that contain GMP which was built earlier.</para>
133 </listitem>
134 </varlistentry>
135
136 <varlistentry os="af10">
137 <term><parameter>--with-mpc=${CLFS}/cross-tools</parameter></term>
138 <listitem>
139 <para>Tells configure where to find the
140 <filename class="directory">lib</filename> and
141 <filename class="directory">include</filename> directories
142 that contain MPC which was built earlier.</para>
143 </listitem>
144 </varlistentry>
145
146 <varlistentry os="af11">
147 <term><parameter>--without-headers</parameter></term>
148 <listitem>
149 <para>Tells configure to not use any headers from any C libraries.
150 This is needed as we haven't yet built the C library and to prevent
151 influence from the host environment.</para>
152 </listitem>
153 </varlistentry>
154
155 <varlistentry os="af12">
156 <term><parameter>--with-newlib</parameter></term>
157 <listitem>
158 <para>Tells configure to build libgcc without needing any C
159 libraries.</para>
160 </listitem>
161 </varlistentry>
162
163 <varlistentry os="af13">
164 <term><parameter>--disable-decimal-float</parameter></term>
165 <listitem>
166 <para>Tells configure to disable IEEE 754-2008 decimal floating
167 point support. Decimal floating point support isn't needed yet.</para>
168 </listitem>
169 </varlistentry>
170
171 <varlistentry os="af14">
172 <term><parameter>--disable-libgomp</parameter></term>
173 <listitem>
174 <para>Tells configure to not build the GOMP run-time libraries.
175 GOMP is the GNU implementation of OpenMP, a API for shared-memory
176 parallel programming.</para>
177 </listitem>
178 </varlistentry>
179
180 <varlistentry os="af15">
181 <term><parameter>--disable-libmudflap</parameter></term>
182 <listitem>
183 <para>Tells configure to not build libmudflap. Mudflap is a
184 library that can be used to help check for proper pointer usage.</para>
185 </listitem>
186 </varlistentry>
187
188 <varlistentry os="af16">
189 <term><parameter>--disable-libssp</parameter></term>
190 <listitem>
191 <para>Tells configure not to build run-time libraries for stack
192 smashing detection.</para>
193 </listitem>
194 </varlistentry>
195
196 <varlistentry os="af17">
197 <term><parameter>--disable-threads</parameter></term>
198 <listitem>
199 <para>This will prevent GCC from looking for the multi-thread
200 include files, since they haven't been created for this architecture
201 yet. GCC will be able to find the multi-thread information after
202 the glib headers are created.</para>
203 </listitem>
204 </varlistentry>
205
206 <varlistentry os="af18">
207 <term><parameter>--enable-languages=c</parameter></term>
208 <listitem>
209 <para>This option ensures that only the C compiler is built.</para>
210 </listitem>
211 </varlistentry>
212
213 <varlistentry os="af19">
214 <term><parameter>--disable-multilib</parameter></term>
215 <listitem>
216 <para>This option specifies that multiple target libraries should
217 not be built.</para>
218 </listitem>
219 </varlistentry>
220
221 </variablelist>
222
223 <para os="ah">Continue with compiling the package:</para>
224
225<screen os="ai"><userinput>make all-gcc all-target-libgcc</userinput></screen>
226
227 <para os="aj">Install the package:</para>
228
229<screen os="ak"><userinput>make install-gcc install-target-libgcc</userinput></screen>
230
231 </sect2>
232
233 <sect2 role="content">
234 <title/>
235
236 <para>Details on this package are located in <xref
237 linkend="contents-gcc" role="."/></para>
238
239 </sect2>
240
241</sect1>
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