source: BOOK/cross-tools/common/gcc-static.xml @ 852824db

clfs-3.0.0-systemdclfs-3.0.0-sysvinitsystemdsysvinit
Last change on this file since 852824db was 852824db, checked in by Chris Staub <chris@…>, 10 years ago

More command explanation updates

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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  <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
19  href="../../final-system/common/gcc.xml"
20  xpointer="xpointer(//*[@role='package'])"/>
21
22  <sect2 role="installation">
23    <title>Installation of Cross GCC Compiler with Static libgcc
24    and no Threads</title>
25
26    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
27    href="../../final-system/common/gcc.xml"
28    xpointer="xpointer(//*[@os='p1'])"/>
29
30    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
31    href="../../final-system/common/gcc.xml"
32    xpointer="xpointer(//*[@os='p2'])"/>
33
34    <para os="aa">Make a couple of essential adjustments to the
35    <filename>specs</filename> file to ensure GCC uses our build
36    environment:</para>
37
38<screen os="ab"><userinput>patch -Np1 -i ../&gcc-specs-patch;</userinput></screen>
39
40    <para os="ag">Change the StartFile Spec so that GCC looks in
41<filename class="directory">/tools</filename>:</para>
42
43<screen os="ah"><userinput>echo -en '\n#undef STANDARD_STARTFILE_PREFIX_1\n#define STANDARD_STARTFILE_PREFIX_1 "/tools/lib/"\n' >> gcc/config/linux.h
44echo -en '\n#undef STANDARD_STARTFILE_PREFIX_2\n#define STANDARD_STARTFILE_PREFIX_2 ""\n' >> gcc/config/linux.h</userinput></screen>
45
46    <para os="t1">We will create a dummy <filename>limits.h</filename> so
47    the build will not use the one provided by the host distro:</para>
48
49<screen os="t2"><userinput>touch /tools/include/limits.h</userinput></screen>
50
51    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
52    href="../../final-system/common/gcc.xml"
53    xpointer="xpointer(//*[@os='f'])"/>
54
55    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
56    href="../../final-system/common/gcc.xml"
57    xpointer="xpointer(//*[@os='g'])"/>
58
59    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
60    href="../../final-system/common/gcc.xml"
61    xpointer="xpointer(//*[@os='h'])"/>
62
63<screen os="al"><userinput>AR=ar LDFLAGS="-Wl,-rpath,/cross-tools/lib" \
64  ../gcc-&gcc-version;/configure --prefix=/cross-tools \
65  --build=${CLFS_HOST} --host=${CLFS_HOST} --target=${CLFS_TARGET} \
66  --with-sysroot=${CLFS} --with-local-prefix=/tools \
67  --with-native-system-header-dir=/tools/include --disable-nls \
68  --disable-shared --with-mpfr=/cross-tools --with-gmp=/cross-tools \
69  --with-isl=/cross-tools --with-cloog=/cross-tools --with-mpc=/cross-tools \
70  --without-headers --with-newlib --disable-decimal-float --disable-libgomp \
71  --disable-libmudflap --disable-libssp --disable-libatomic --disable-libitm \
72  --disable-libsanitizer --disable-libquadmath --disable-threads \
73  --disable-multilib --disable-target-zlib --with-system-zlib \
74  --enable-languages=c --enable-checking=release</userinput></screen>
75
76    <variablelist os="am">
77      <title>The meaning of the new configure options:</title>
78
79     <varlistentry>
80        <term><parameter>--with-local-prefix=/tools</parameter></term>
81        <listitem>
82          <para>The purpose of this switch is to remove <filename
83          class="directory">/usr/local/include</filename> from
84          <command>gcc</command>'s include search path. This is not
85          absolutely essential, however, it helps to minimize the
86          influence of the host system.</para>
87        </listitem>
88      </varlistentry>
89
90      <varlistentry>
91        <term><parameter>--with-native-system-headers-dir=/tools/include</parameter></term>
92        <listitem>
93          <para>This switch ensures that GCC will search for the system headers
94           in <filename class="directory">/tools/include</filename> and that
95           host system headers will not be searched.</para>
96        </listitem>
97      </varlistentry>
98
99      <varlistentry>
100        <term><parameter>--disable-shared</parameter></term>
101        <listitem>
102          <para>This tells GCC not to create a shared library.</para>
103        </listitem>
104      </varlistentry>
105
106      <varlistentry>
107        <term><parameter>--without-headers</parameter></term>
108        <listitem>
109          <para>Disables GCC from using the target's Libc when cross compiling.</para>
110        </listitem>
111      </varlistentry>
112
113      <varlistentry>
114        <term><parameter>--with-newlib</parameter></term>
115        <listitem>
116          <para>Tells GCC that the target libc will use 'newlib'.</para>
117        </listitem>
118      </varlistentry>
119
120      <varlistentry>
121        <term><parameter>--disable-decimal-float</parameter></term>
122        <listitem>
123          <para>Disables support for the C decimal floating point extension.</para>
124        </listitem>
125      </varlistentry>
126
127      <varlistentry>
128        <term><parameter>--disable-lib*</parameter></term>
129        <listitem>
130          <para>These options prevent GCC from building a number of libraries
131          that are not needed at this time.</para>
132        </listitem>
133      </varlistentry>
134
135      <varlistentry>
136        <term><parameter>--disable-threads</parameter></term>
137        <listitem>
138          <para>This will prevent GCC from looking for the multi-thread
139          include files, since they haven't been created for this architecture
140          yet. GCC will be able to find the multi-thread information after
141          the Glibc headers are created.</para>
142        </listitem>
143      </varlistentry>
144
145      <varlistentry>
146        <term><parameter>--disable-target-zlib</parameter></term>
147        <listitem>
148          <para>This tells GCC stuff.</para>
149        </listitem>
150      </varlistentry>
151
152      <varlistentry>
153        <term><parameter>--with-system-zlib</parameter></term>
154        <listitem>
155          <para>This tells GCC to link to the system-installed zlib instead
156          of the one in its source tree.</para>
157        </listitem>
158      </varlistentry>
159
160      <varlistentry>
161        <term><parameter>--enable-languages=c</parameter></term>
162        <listitem>
163          <para>This option ensures that only the C compiler is built.</para>
164        </listitem>
165      </varlistentry>
166
167      <varlistentry>
168        <term><parameter>--enable-checking=release</parameter></term>
169        <listitem>
170          <para>This option selects the complexity of the internal consistency checks and adds error checking within the compiler.</para>
171        </listitem>
172      </varlistentry>
173
174    </variablelist>
175
176    <para os="an">Continue with compiling the package:</para>
177
178<screen os="ao"><userinput>make all-gcc all-target-libgcc</userinput></screen>
179
180    <variablelist os="ap">
181      <title>The meaning of the new make options:</title>
182
183      <varlistentry>
184        <term><parameter>all-gcc all-target-libgcc</parameter></term>
185        <listitem>
186          <para>Compiles only the parts of GCC that are needed at this time,
187          rather than the full package.</para>
188        </listitem>
189      </varlistentry>
190
191    </variablelist>
192
193    <para os="aq">Install the package:</para>
194
195<screen os="ar"><userinput>make install-gcc install-target-libgcc</userinput></screen>
196
197    <para os="as">Copy <filename class="headerfile">libiberty.h</filename> to
198    <filename class="directory">/tools/include</filename> directory:</para>
199
200<screen os="at"><userinput>cp -v ../gcc-&gcc-version;/include/libiberty.h /tools/include</userinput></screen>
201
202  </sect2>
203
204  <sect2 role="content">
205    <title/>
206
207    <para>Details on this package are located in <xref
208    linkend="contents-gcc" role="."/></para>
209
210  </sect2>
211
212</sect1>
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