source: BOOK/cross-tools/common/gcc-static.xml @ cc858ed

clfs-2.1clfs-3.0.0-systemdclfs-3.0.0-sysvinitsystemdsysvinit
Last change on this file since cc858ed was cc858ed, checked in by William Harrington <kb0iic@…>, 11 years ago

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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-threads --disable-multilib \
72  --disable-libatomic --disable-libitm --disable-libsanitizer \
73  --disable-libquadmath --disable-target-libiberty --disable-target-zlib \
74  --with-system-zlib --enable-cloog-backend=isl --disable-isl-version-check \
75  --enable-languages=c --enable-checking=release</userinput></screen>
76
77    <variablelist os="am">
78      <title>The meaning of the new configure options:</title>
79
80      <varlistentry>
81        <term><parameter>--with-sysroot=${CLFS}</parameter></term>
82        <listitem>
83          <para>Tells GCC to consider ${CLFS} as the root file system.</para>
84        </listitem>
85      </varlistentry>
86
87     <varlistentry>
88        <term><parameter>--with-local-prefix=/tools</parameter></term>
89        <listitem>
90          <para>The purpose of this switch is to remove <filename
91          class="directory">/usr/local/include</filename> from
92          <command>gcc</command>'s include search path. This is not
93          absolutely essential, however, it helps to minimize the
94          influence of the host system.</para>
95        </listitem>
96      </varlistentry>
97
98
99      <varlistentry>
100        <term><parameter>--with-native-system-headers-dir=/tools/include</parameter></term>
101        <listitem>
102          <para>This switch ensures that GCC will search for the system headers
103           in <filename class="directory">/tools/include</filename> and that
104           host system headers will not be searched.</para>
105        </listitem>
106      </varlistentry>
107
108      <varlistentry>
109        <term><parameter>--disable-nls</parameter></term>
110        <listitem>
111          <para>This disables internationalization as i18n is not needed for the
112          cross-compile tools.</para>
113        </listitem>
114      </varlistentry>
115
116      <varlistentry>
117        <term><parameter>--without-headers</parameter></term>
118        <listitem>
119          <para>Disables GCC from using the target's Libc when cross compiling.</para>
120        </listitem>
121      </varlistentry>
122
123      <varlistentry>
124        <term><parameter>--with-newlib</parameter></term>
125        <listitem>
126          <para>Tells GCC that the target libc will use 'newlib'.</para>
127        </listitem>
128      </varlistentry>
129
130      <varlistentry>
131        <term><parameter>--disable-decimal-float</parameter></term>
132        <listitem>
133          <para>Disables support for the C decimal floating point extension.</para>
134        </listitem>
135      </varlistentry>
136
137      <varlistentry>
138        <term><parameter>--disable-libgomp</parameter></term>
139        <listitem>
140          <para>Disables the creation of runtime libraries used by GOMP.</para>
141        </listitem>
142      </varlistentry>
143
144      <varlistentry>
145        <term><parameter>--disable-libmudflap</parameter></term>
146        <listitem>
147          <para>Disables the creation of runtime libaries used by libmudflap.</para>
148        </listitem>
149      </varlistentry>
150
151      <varlistentry>
152        <term><parameter>--disable-libssp</parameter></term>
153        <listitem>
154          <para>Disables the use of Stack Smashing Protection for runtime libraries.</para>
155        </listitem>
156      </varlistentry>
157
158      <varlistentry>
159        <term><parameter>--disable-threads</parameter></term>
160        <listitem>
161          <para>This will prevent GCC from looking for the multi-thread
162          include files, since they haven't been created for this architecture
163          yet. GCC will be able to find the multi-thread information after
164          the Glibc headers are created.</para>
165        </listitem>
166      </varlistentry>
167
168      <varlistentry>
169        <term><parameter>--disable-libatomic</parameter></term>
170        <listitem>
171          <para>The atomic library isn't needed at this time.</para>
172        </listitem>
173      </varlistentry>
174
175      <varlistentry>
176        <term><parameter>--disable-libitm</parameter></term>
177        <listitem>
178          <para>The itm library isn't neeeded at this tiem.</para>
179        </listitem>
180      </varlistentry>
181
182      <varlistentry>
183        <term><parameter>--disable-libsanitizer</parameter></term>
184        <listitem>
185          <para>The sanitizer library isn't needed at this time.</para>
186        </listitem>
187      </varlistentry>
188
189      <varlistentry>
190        <term><parameter>--disable-libquadmath</parameter></term>
191        <listitem>
192          <para>The quadmath library isn't needed at this time.</para>
193        </listitem>
194      </varlistentry>
195
196      <varlistentry>
197        <term><parameter>--enable-languages=c</parameter></term>
198        <listitem>
199          <para>This option ensures that only the C compiler is built.</para>
200        </listitem>
201      </varlistentry>
202
203      <varlistentry>
204        <term><parameter>--enable-checking=release</parameter></term>
205        <listitem>
206          <para>This option selects the complexity of the internal consistency checks and adds error checking within the compiler.</para>
207        </listitem>
208      </varlistentry>
209
210    </variablelist>
211
212    <para os="an">Continue with compiling the package:</para>
213
214<screen os="ao"><userinput>make all-gcc all-target-libgcc</userinput></screen>
215
216    <variablelist os="ap">
217      <title>The meaning of the new make options:</title>
218
219      <varlistentry>
220        <term><parameter>all-gcc all-target-libgcc</parameter></term>
221        <listitem>
222          <para>Compiles only the parts of GCC that are needed at this time,
223          rather than the full package.</para>
224        </listitem>
225      </varlistentry>
226
227    </variablelist>
228
229    <para os="aq">Install the package:</para>
230
231<screen os="ar"><userinput>make install-gcc install-target-libgcc</userinput></screen>
232
233  </sect2>
234
235  <sect2 role="content">
236    <title/>
237
238    <para>Details on this package are located in <xref
239    linkend="contents-gcc" role="."/></para>
240
241  </sect2>
242
243</sect1>
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