source: clfs-embedded/BOOK/cross-tools/common/gcc-static.xml @ 06cf5e4

Last change on this file since 06cf5e4 was 0f33b23, checked in by Andrew Bradford <bradfa@…>, 12 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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