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>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 compiler.</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="aa">In order to work with musl-libc, GCC needs to be patched:</para> |
---|
33 | |
---|
34 | <screen os="ab"><userinput>patch -Np1 -i ../&gcc-musl-patch;</userinput></screen> |
---|
35 | |
---|
36 | <para os="b">GCC requires the GMP, MPFR, and MPC packages to either be |
---|
37 | present on the host or to be present in source form within the gcc source |
---|
38 | tree. Unpack these into the GCC directory after unpacking GCC:</para> |
---|
39 | |
---|
40 | <screen os="ba"><userinput>tar xf ../mpfr-&mpfr-version;.tar.bz2 |
---|
41 | mv -v mpfr-&mpfr-version; mpfr |
---|
42 | tar xf ../gmp-&gmp-version;.tar.bz2 |
---|
43 | mv -v gmp-&gmp-version; gmp |
---|
44 | tar xf ../mpc-&mpc-version;.tar.gz |
---|
45 | mv -v mpc-&mpc-version; mpc</userinput></screen> |
---|
46 | |
---|
47 | <para os="c">The GCC documentation recommends building GCC outside of the source |
---|
48 | directory in a dedicated build directory:</para> |
---|
49 | |
---|
50 | <screen os="d"><userinput>mkdir -v ../gcc-build |
---|
51 | cd ../gcc-build</userinput></screen> |
---|
52 | |
---|
53 | <para os="e">Prepare GCC for compilation:</para> |
---|
54 | |
---|
55 | <!-- This is the common configure line for GCC-Static. --> |
---|
56 | <!-- It's not actually used by any arch but is here for reference. --> |
---|
57 | <screen os="ae"><userinput>../gcc-&gcc-version;/configure \ |
---|
58 | --prefix=${CLFS}/cross-tools \ |
---|
59 | --build=${CLFS_HOST} \ |
---|
60 | --host=${CLFS_HOST} \ |
---|
61 | --target=${CLFS_TARGET} \ |
---|
62 | --with-sysroot=${CLFS}/cross-tools/${CLFS_TARGET} \ |
---|
63 | --disable-nls \ |
---|
64 | --disable-shared \ |
---|
65 | --without-headers \ |
---|
66 | --with-newlib \ |
---|
67 | --disable-decimal-float \ |
---|
68 | --disable-libgomp \ |
---|
69 | --disable-libmudflap \ |
---|
70 | --disable-libssp \ |
---|
71 | --disable-libatomic \ |
---|
72 | --disable-libquadmath \ |
---|
73 | --disable-threads \ |
---|
74 | --enable-languages=c \ |
---|
75 | --disable-multilib \ |
---|
76 | --with-mpfr-include=$(pwd)/../gcc-&gcc-version;/mpfr/src \ |
---|
77 | --with-mpfr-lib=$(pwd)/mpfr/src/.libs</userinput></screen> |
---|
78 | |
---|
79 | <variablelist os="af"> |
---|
80 | <title>The meaning of the configure options:</title> |
---|
81 | |
---|
82 | <varlistentry os="af1"> |
---|
83 | <term><parameter>--prefix=${CLFS}/cross-tools</parameter></term> |
---|
84 | <listitem> |
---|
85 | <para>This tells the configure script to prepare to install the |
---|
86 | package in the <filename class="directory">${CLFS}/cross-tools</filename> |
---|
87 | directory.</para> |
---|
88 | </listitem> |
---|
89 | </varlistentry> |
---|
90 | |
---|
91 | <varlistentry os="af2"> |
---|
92 | <term><parameter>--build=${CLFS_HOST}</parameter></term> |
---|
93 | <listitem> |
---|
94 | <para>This tells the configure script the triplet to use to build GCC. |
---|
95 | It will use ${CLFS_HOST} as that's where it's being built.</para> |
---|
96 | </listitem> |
---|
97 | </varlistentry> |
---|
98 | |
---|
99 | <varlistentry os="af3"> |
---|
100 | <term><parameter>--host=${CLFS_HOST}</parameter></term> |
---|
101 | <listitem> |
---|
102 | <para>This tells the configure script the triplet of the machine GCC |
---|
103 | will be executed on when actually cross compiling. It will use |
---|
104 | ${CLFS_HOST} as that's where GCC will execute when cross compiling |
---|
105 | software later.</para> |
---|
106 | </listitem> |
---|
107 | </varlistentry> |
---|
108 | |
---|
109 | <varlistentry os="af4"> |
---|
110 | <term><parameter>--target=${CLFS_TARGET}</parameter></term> |
---|
111 | <listitem> |
---|
112 | <para>This tells the configure script the triplet of the machine GCC |
---|
113 | will build executables for. It will use ${CLFS_TARGET} so that software |
---|
114 | compiled with this version of GCC can be executed on the embedded machine |
---|
115 | target.</para> |
---|
116 | </listitem> |
---|
117 | </varlistentry> |
---|
118 | |
---|
119 | <varlistentry os="af5"> |
---|
120 | <term><parameter>--with-sysroot=${CLFS}/cross-tools/${CLFS_TARGET}</parameter></term> |
---|
121 | <listitem> |
---|
122 | <para>This tells configure that ${CLFS}/cross-tools/${CLFS_TARGET} is going |
---|
123 | to be the temporary root of our system. It will now use the specified |
---|
124 | sysroot as a prefix of the default search paths.</para> |
---|
125 | </listitem> |
---|
126 | </varlistentry> |
---|
127 | |
---|
128 | <varlistentry os="af6"> |
---|
129 | <term><parameter>--disable-nls</parameter></term> |
---|
130 | <listitem> |
---|
131 | <para>This disables internationalization as i18n is not needed for the |
---|
132 | cross-compile tools.</para> |
---|
133 | </listitem> |
---|
134 | </varlistentry> |
---|
135 | |
---|
136 | <varlistentry os="af7"> |
---|
137 | <term><parameter>--disable-shared</parameter></term> |
---|
138 | <listitem> |
---|
139 | <para>Disables the creation of the shared libraries.</para> |
---|
140 | </listitem> |
---|
141 | </varlistentry> |
---|
142 | |
---|
143 | <varlistentry os="af11"> |
---|
144 | <term><parameter>--without-headers</parameter></term> |
---|
145 | <listitem> |
---|
146 | <para>Tells configure to not use any headers from any C libraries. |
---|
147 | This is needed as we haven't yet built the C library and to prevent |
---|
148 | influence from the host environment.</para> |
---|
149 | </listitem> |
---|
150 | </varlistentry> |
---|
151 | |
---|
152 | <varlistentry os="af12"> |
---|
153 | <term><parameter>--with-newlib</parameter></term> |
---|
154 | <listitem> |
---|
155 | <para>Tells configure to build libgcc without needing any C |
---|
156 | libraries.</para> |
---|
157 | </listitem> |
---|
158 | </varlistentry> |
---|
159 | |
---|
160 | <varlistentry os="af13"> |
---|
161 | <term><parameter>--disable-decimal-float</parameter></term> |
---|
162 | <listitem> |
---|
163 | <para>Tells configure to disable IEEE 754-2008 decimal floating |
---|
164 | point support. Decimal floating point support isn't needed yet.</para> |
---|
165 | </listitem> |
---|
166 | </varlistentry> |
---|
167 | |
---|
168 | <varlistentry os="af14"> |
---|
169 | <term><parameter>--disable-libgomp</parameter></term> |
---|
170 | <listitem> |
---|
171 | <para>Tells configure to not build the GOMP run-time libraries. |
---|
172 | GOMP is the GNU implementation of OpenMP, a API for shared-memory |
---|
173 | parallel programming.</para> |
---|
174 | </listitem> |
---|
175 | </varlistentry> |
---|
176 | |
---|
177 | <varlistentry os="af15"> |
---|
178 | <term><parameter>--disable-libmudflap</parameter></term> |
---|
179 | <listitem> |
---|
180 | <para>Tells configure to not build libmudflap. Mudflap is a |
---|
181 | library that can be used to help check for proper pointer usage.</para> |
---|
182 | </listitem> |
---|
183 | </varlistentry> |
---|
184 | |
---|
185 | <varlistentry os="af16"> |
---|
186 | <term><parameter>--disable-libssp</parameter></term> |
---|
187 | <listitem> |
---|
188 | <para>Tells configure not to build run-time libraries for stack |
---|
189 | smashing detection.</para> |
---|
190 | </listitem> |
---|
191 | </varlistentry> |
---|
192 | |
---|
193 | <varlistentry os="af17"> |
---|
194 | <term><parameter>--disable-libatomic</parameter></term> |
---|
195 | <listitem> |
---|
196 | <para>Tells configure not to build atomic operations.</para> |
---|
197 | </listitem> |
---|
198 | </varlistentry> |
---|
199 | |
---|
200 | <varlistentry os="af18"> |
---|
201 | <term><parameter>--disable-libquadmath</parameter></term> |
---|
202 | <listitem> |
---|
203 | <para>Tells configure not to build quad math operations.</para> |
---|
204 | </listitem> |
---|
205 | </varlistentry> |
---|
206 | |
---|
207 | <varlistentry os="af19"> |
---|
208 | <term><parameter>--disable-threads</parameter></term> |
---|
209 | <listitem> |
---|
210 | <para>This will prevent GCC from looking for the multi-thread |
---|
211 | include files, since they haven't been created for this architecture |
---|
212 | yet. GCC will be able to find the multi-thread information after |
---|
213 | the glib headers are created.</para> |
---|
214 | </listitem> |
---|
215 | </varlistentry> |
---|
216 | |
---|
217 | <varlistentry os="af20"> |
---|
218 | <term><parameter>--enable-languages=c</parameter></term> |
---|
219 | <listitem> |
---|
220 | <para>This option ensures that only the C compiler is built.</para> |
---|
221 | </listitem> |
---|
222 | </varlistentry> |
---|
223 | |
---|
224 | <varlistentry os="af21"> |
---|
225 | <term><parameter>--disable-multilib</parameter></term> |
---|
226 | <listitem> |
---|
227 | <para>This option specifies that multiple target libraries should |
---|
228 | not be built.</para> |
---|
229 | </listitem> |
---|
230 | </varlistentry> |
---|
231 | |
---|
232 | <varlistentry os="af22"> |
---|
233 | <term><parameter>--with-mpfr-include=$(pwd)/../gcc-&gcc-version;/mpfr/src</parameter></term> |
---|
234 | <listitem> |
---|
235 | <para>Tells configure how to find the mpfr headers.</para> |
---|
236 | </listitem> |
---|
237 | </varlistentry> |
---|
238 | |
---|
239 | <varlistentry os="af23"> |
---|
240 | <term><parameter>--with-mpfr-lib=$(pwd)/mpfr/src/.libs</parameter></term> |
---|
241 | <listitem> |
---|
242 | <para>Tells configure to use the mpfr libraries built within the GCC |
---|
243 | build directory. This happens automatically but is needed to |
---|
244 | prevent GCC from searching the host's normal library paths.</para> |
---|
245 | </listitem> |
---|
246 | </varlistentry> |
---|
247 | |
---|
248 | </variablelist> |
---|
249 | |
---|
250 | <para os="ah">Continue with compiling the package:</para> |
---|
251 | |
---|
252 | <screen os="ai"><userinput>make all-gcc all-target-libgcc</userinput></screen> |
---|
253 | |
---|
254 | <para os="aj">Install the package:</para> |
---|
255 | |
---|
256 | <screen os="ak"><userinput>make install-gcc install-target-libgcc</userinput></screen> |
---|
257 | |
---|
258 | </sect2> |
---|
259 | |
---|
260 | <sect2 role="content"> |
---|
261 | <title/> |
---|
262 | |
---|
263 | <para>Details on this package are located in <xref |
---|
264 | linkend="contents-gcc" role="."/></para> |
---|
265 | |
---|
266 | </sect2> |
---|
267 | |
---|
268 | </sect1> |
---|