source: BOOK/cross-tools/common/gcc-static.xml@ 2256e5a

clfs-3.0.0-systemd clfs-3.0.0-sysvinit systemd sysvinit
Last change on this file since 2256e5a was 852824db, checked in by Chris Staub <chris@…>, 11 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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