1 | <?xml version="1.0" encoding="UTF-8"?>
|
---|
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-tools-glibc" role="wrap">
|
---|
9 | <?dbhtml filename="glibc.html"?>
|
---|
10 |
|
---|
11 | <sect1info condition="script">
|
---|
12 | <productname>glibc</productname>
|
---|
13 | <productnumber>&glibc-version;</productnumber>
|
---|
14 | <address>&glibc-url;</address>
|
---|
15 | </sect1info>
|
---|
16 |
|
---|
17 | <title>Glibc-&glibc-version;</title>
|
---|
18 |
|
---|
19 | <indexterm zone="ch-tools-glibc">
|
---|
20 | <primary sortas="a-Glibc">Glibc</primary>
|
---|
21 | <secondary>tools</secondary>
|
---|
22 | </indexterm>
|
---|
23 |
|
---|
24 | <sect2 role="package">
|
---|
25 | <title/>
|
---|
26 |
|
---|
27 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
|
---|
28 | href="../chapter08/glibc.xml"
|
---|
29 | xpointer="xpointer(/sect1/sect2[1]/para[1])"/>
|
---|
30 |
|
---|
31 | <segmentedlist>
|
---|
32 | <segtitle>&buildtime;</segtitle>
|
---|
33 | <segtitle>&diskspace;</segtitle>
|
---|
34 |
|
---|
35 | <seglistitem>
|
---|
36 | <seg>&glibc-tmp-sbu;</seg>
|
---|
37 | <seg>&glibc-tmp-du;</seg>
|
---|
38 | </seglistitem>
|
---|
39 | </segmentedlist>
|
---|
40 |
|
---|
41 | </sect2>
|
---|
42 |
|
---|
43 | <sect2 role="installation">
|
---|
44 | <title>Installation of Glibc</title>
|
---|
45 |
|
---|
46 | <para>First, create a symbolic link for LSB compliance. Additionally,
|
---|
47 | for x86_64, create a compatibility symbolic link required for proper
|
---|
48 | operation of the dynamic library loader:</para>
|
---|
49 |
|
---|
50 | <screen arch="default"><userinput remap="pre">case "$LFS_TGT" in
|
---|
51 | i?86-*) ln -sfv ld-linux.so.2 $LFS/lib/ld-lsb.so.3
|
---|
52 | ;;
|
---|
53 | x86_64-*) ln -sfv ../lib/ld-linux-x86-64.so.2 $LFS/lib64
|
---|
54 | ln -sfv ../lib/ld-linux-x86-64.so.2 $LFS/lib64/ld-lsb-x86-64.so.3
|
---|
55 | ;;
|
---|
56 | esac</userinput></screen>
|
---|
57 | <!-- no ld-linux.so.2 here as multilib is based on x86_64, not on i686 -->
|
---|
58 | <screen arch="ml_32,ml_x32,ml_all"><userinput remap="pre">ln -sfv ../lib/ld-linux-x86-64.so.2 $LFS/lib64
|
---|
59 | ln -sfv ../lib/ld-linux-x86-64.so.2 $LFS/lib64/ld-lsb-x86-64.so.3</userinput></screen>
|
---|
60 |
|
---|
61 | <note>
|
---|
62 | <para>
|
---|
63 | The above command is correct. The <command>ln</command> command has
|
---|
64 | several syntactic versions, so be sure to check
|
---|
65 | <command>info coreutils ln</command> and <ulink role='man'
|
---|
66 | url='&man;ln.1'>ln(1)</ulink> before reporting what may appear to be
|
---|
67 | an error.
|
---|
68 | </para>
|
---|
69 | </note>
|
---|
70 |
|
---|
71 | <para>Some of the Glibc programs use the non-FHS-compliant
|
---|
72 | <filename class="directory">/var/db</filename> directory to store their
|
---|
73 | runtime data. Apply the following patch to make such programs store their
|
---|
74 | runtime data in the FHS-compliant locations:</para>
|
---|
75 |
|
---|
76 | <screen><userinput remap="pre">patch -Np1 -i ../glibc-&glibc-version;-fhs-1.patch</userinput></screen>
|
---|
77 |
|
---|
78 | <para>The Glibc documentation recommends building Glibc
|
---|
79 | in a dedicated build directory:</para>
|
---|
80 |
|
---|
81 | <screen><userinput remap="pre">mkdir -v build
|
---|
82 | cd build</userinput></screen>
|
---|
83 |
|
---|
84 | <para>Ensure that the <command>ldconfig</command> and <command>sln</command>
|
---|
85 | utilities are installed into
|
---|
86 | <filename class="directory">/usr/sbin</filename>:</para>
|
---|
87 |
|
---|
88 | <screen><userinput remap="pre">echo "rootsbindir=/usr/sbin" > configparms</userinput></screen>
|
---|
89 |
|
---|
90 | <para>Next, prepare Glibc for compilation:</para>
|
---|
91 |
|
---|
92 | <screen><userinput remap="configure">../configure \
|
---|
93 | --prefix=/usr \
|
---|
94 | --host=$LFS_TGT \
|
---|
95 | --build=$(../scripts/config.guess) \
|
---|
96 | --enable-kernel=&min-kernel; \
|
---|
97 | --with-headers=$LFS/usr/include \
|
---|
98 | --disable-nscd \
|
---|
99 | libc_cv_slibdir=/usr/lib</userinput></screen>
|
---|
100 |
|
---|
101 | <variablelist>
|
---|
102 | <title>The meaning of the configure options:</title>
|
---|
103 |
|
---|
104 | <varlistentry>
|
---|
105 | <term><parameter>--host=$LFS_TGT, --build=$(../scripts/config.guess)</parameter></term>
|
---|
106 | <listitem>
|
---|
107 | <para>The combined effect of these switches is that Glibc's build system
|
---|
108 | configures itself to be cross-compiled, using the cross-linker and
|
---|
109 | cross-compiler in <filename class="directory">$LFS/tools</filename>.</para>
|
---|
110 | </listitem>
|
---|
111 | </varlistentry>
|
---|
112 |
|
---|
113 | <varlistentry>
|
---|
114 | <term><parameter>--enable-kernel=&min-kernel;</parameter></term>
|
---|
115 | <listitem>
|
---|
116 | <para>This tells Glibc to compile the library with support
|
---|
117 | for &min-kernel; and later Linux kernels. Workarounds for older
|
---|
118 | kernels are not enabled.</para>
|
---|
119 | </listitem>
|
---|
120 | </varlistentry>
|
---|
121 |
|
---|
122 | <varlistentry>
|
---|
123 | <term><parameter>--with-headers=$LFS/usr/include</parameter></term>
|
---|
124 | <listitem>
|
---|
125 | <para>This tells Glibc to compile itself against the headers
|
---|
126 | recently installed to the $LFS/usr/include directory, so that
|
---|
127 | it knows exactly what features the kernel has and can optimize
|
---|
128 | itself accordingly.</para>
|
---|
129 | </listitem>
|
---|
130 | </varlistentry>
|
---|
131 |
|
---|
132 | <varlistentry>
|
---|
133 | <term><parameter>libc_cv_slibdir=/usr/lib</parameter></term>
|
---|
134 | <listitem>
|
---|
135 | <para>This ensures that the library is installed in /usr/lib instead
|
---|
136 | of the default /lib64 on 64-bit machines.</para>
|
---|
137 | </listitem>
|
---|
138 | </varlistentry>
|
---|
139 |
|
---|
140 | <varlistentry>
|
---|
141 | <term><parameter>--disable-nscd</parameter></term>
|
---|
142 | <listitem>
|
---|
143 | <para>Do not build the name service cache daemon which is no
|
---|
144 | longer used.</para>
|
---|
145 | </listitem>
|
---|
146 | </varlistentry>
|
---|
147 |
|
---|
148 | </variablelist>
|
---|
149 |
|
---|
150 | <para>During this stage the following warning might appear:</para>
|
---|
151 |
|
---|
152 | <blockquote>
|
---|
153 | <screen><computeroutput>configure: WARNING:
|
---|
154 | *** These auxiliary programs are missing or
|
---|
155 | *** incompatible versions: msgfmt
|
---|
156 | *** some features will be disabled.
|
---|
157 | *** Check the INSTALL file for required versions.</computeroutput></screen>
|
---|
158 | </blockquote>
|
---|
159 |
|
---|
160 | <para>The missing or incompatible <command>msgfmt</command> program is
|
---|
161 | generally harmless. This <command>msgfmt</command> program is part of the
|
---|
162 | Gettext package, which the host distribution should provide.</para>
|
---|
163 |
|
---|
164 | <note><para>There have been reports that this package may fail when
|
---|
165 | building as a <quote>parallel make.</quote> If that occurs, rerun the make command
|
---|
166 | with the <option>-j1</option> option.</para></note>
|
---|
167 |
|
---|
168 | <para>Compile the package:</para>
|
---|
169 |
|
---|
170 | <screen><userinput remap="make">make</userinput></screen>
|
---|
171 |
|
---|
172 | <para>Install the package:</para>
|
---|
173 |
|
---|
174 | <warning><para>If <envar>LFS</envar> is not properly set, and despite the
|
---|
175 | recommendations, you are building as
|
---|
176 | <systemitem class="username">root</systemitem>, the next command will
|
---|
177 | install the newly built Glibc to your host system, which will almost
|
---|
178 | certainly render it unusable. So double-check that the environment is
|
---|
179 | correctly set, and that you are not &root;, before running the following command.</para></warning>
|
---|
180 |
|
---|
181 | <screen><userinput remap="install">make DESTDIR=$LFS install</userinput></screen>
|
---|
182 |
|
---|
183 | <variablelist>
|
---|
184 | <title>The meaning of the <command>make install</command> option:</title>
|
---|
185 |
|
---|
186 | <varlistentry>
|
---|
187 | <term><parameter>DESTDIR=$LFS</parameter></term>
|
---|
188 | <listitem>
|
---|
189 | <para>The <envar>DESTDIR</envar> make variable is used by almost all
|
---|
190 | packages to define the location where the package should be
|
---|
191 | installed. If it is not set, it defaults to the root (<filename
|
---|
192 | class="directory">/</filename>) directory. Here we specify that
|
---|
193 | the package is installed in <filename class="directory">$LFS
|
---|
194 | </filename>, which will become the root directory in <xref linkend=
|
---|
195 | "ch-tools-chroot"/>.</para>
|
---|
196 | </listitem>
|
---|
197 | </varlistentry>
|
---|
198 |
|
---|
199 | </variablelist>
|
---|
200 |
|
---|
201 | <para>Fix a hard coded path to the executable loader in the
|
---|
202 | <command>ldd</command> script:</para>
|
---|
203 |
|
---|
204 | <screen><userinput remap="install">sed '/RTLDLIST=/s@/usr@@g' -i $LFS/usr/bin/ldd</userinput></screen>
|
---|
205 |
|
---|
206 | <caution>
|
---|
207 | <para>At this point, it is imperative to stop and ensure that the basic
|
---|
208 | functions (compiling and linking) of the new toolchain are working as
|
---|
209 | expected. To perform a sanity check, run the following commands:</para>
|
---|
210 |
|
---|
211 | <screen><userinput>echo 'int main(){}' | $LFS_TGT-gcc -xc -
|
---|
212 | readelf -l a.out | grep ld-linux</userinput></screen>
|
---|
213 |
|
---|
214 | <para>If everything is working correctly, there should be no errors,
|
---|
215 | and the output of the last command will be of the form:</para>
|
---|
216 |
|
---|
217 | <screen><computeroutput>[Requesting program interpreter: /lib64/ld-linux-x86-64.so.2]</computeroutput></screen>
|
---|
218 |
|
---|
219 | <para arch="default">Note that for 32-bit machines, the interpreter name will be
|
---|
220 | <filename>/lib/ld-linux.so.2</filename>.</para>
|
---|
221 |
|
---|
222 | <para>If the output is not as shown above, or there is no output at all,
|
---|
223 | then something is wrong. Investigate and retrace the steps to find out
|
---|
224 | where the problem is and correct it. This issue must be resolved before
|
---|
225 | continuing.</para>
|
---|
226 |
|
---|
227 | <para>Once all is well, clean up the test file:</para>
|
---|
228 |
|
---|
229 | <screen><userinput>rm -v a.out</userinput></screen>
|
---|
230 |
|
---|
231 | </caution>
|
---|
232 |
|
---|
233 | <note><para>Building the packages in the next chapter will serve as an
|
---|
234 | additional check that the toolchain has been built properly. If some
|
---|
235 | package, especially Binutils-pass2 or GCC-pass2, fails to build, it is
|
---|
236 | an indication that something has gone wrong with the
|
---|
237 | preceding Binutils, GCC, or Glibc installations.</para></note>
|
---|
238 | <!--
|
---|
239 | <para>Now that our cross-toolchain is complete, finalize the installation
|
---|
240 | of the limits.h header. To do this, run a utility provided by the GCC
|
---|
241 | developers:</para>
|
---|
242 |
|
---|
243 | <screen><userinput>$LFS/tools/libexec/gcc/$LFS_TGT/&gcc-version;/install-tools/mkheaders</userinput></screen>
|
---|
244 | -->
|
---|
245 | </sect2>
|
---|
246 |
|
---|
247 | <!-- - - - - - - - - - -->
|
---|
248 | <!-- Multilib - 32bit -->
|
---|
249 | <!-- - - - - - - - - - -->
|
---|
250 | <sect2 arch="ml_32,ml_all">
|
---|
251 | <title>Building Glibc - 32bit</title>
|
---|
252 |
|
---|
253 | <para>Now recompile for m32. The extracted source can be
|
---|
254 | reused but needs to be cleaned before installing the m32
|
---|
255 | version of Glibc.</para>
|
---|
256 |
|
---|
257 | <para>Clear the build directory and remove artefacts from
|
---|
258 | previous build:</para>
|
---|
259 |
|
---|
260 | <screen><userinput remap="pre">make clean
|
---|
261 | find .. -name "*.a" -delete</userinput></screen>
|
---|
262 |
|
---|
263 | <para>Configure Glibc for m32 with the following commands:</para>
|
---|
264 |
|
---|
265 | <screen><userinput remap="configure">CC="$LFS_TGT-gcc -m32" \
|
---|
266 | CXX="$LFS_TGT-g++ -m32" \
|
---|
267 | ../configure \
|
---|
268 | --prefix=/usr \
|
---|
269 | --host=$LFS_TGT32 \
|
---|
270 | --build=$(../scripts/config.guess) \
|
---|
271 | --enable-kernel=&min-kernel; \
|
---|
272 | --with-headers=$LFS/usr/include \
|
---|
273 | --disable-nscd \
|
---|
274 | --libdir=/usr/lib32 \
|
---|
275 | --libexecdir=/usr/lib32 \
|
---|
276 | libc_cv_slibdir=/usr/lib32</userinput></screen>
|
---|
277 |
|
---|
278 | <para>Compile the package:</para>
|
---|
279 |
|
---|
280 | <screen><userinput remap="make">make</userinput></screen>
|
---|
281 |
|
---|
282 | <para>Install the package:</para>
|
---|
283 |
|
---|
284 | <screen><userinput remap="install">make DESTDIR=$PWD/DESTDIR install
|
---|
285 | cp -a DESTDIR/usr/lib32 $LFS/usr/
|
---|
286 | install -vm644 DESTDIR/usr/include/gnu/{lib-names,stubs}-32.h \
|
---|
287 | $LFS/usr/include/gnu/
|
---|
288 | ln -svf ../lib32/ld-linux.so.2 $LFS/lib/ld-linux.so.2</userinput></screen>
|
---|
289 |
|
---|
290 |
|
---|
291 | <caution>
|
---|
292 | <para>At this point, it is imperative to stop and ensure that the basic
|
---|
293 | functions (compiling and linking) of the new toolchain are working as
|
---|
294 | expected. To perform a sanity check, run the following commands:</para>
|
---|
295 |
|
---|
296 | <screen><userinput>echo 'int main(){}' > dummy.c
|
---|
297 | $LFS_TGT-gcc -m32 dummy.c
|
---|
298 | readelf -l a.out | grep '/ld-linux'</userinput></screen>
|
---|
299 |
|
---|
300 | <para>If everything is working correctly, there should be no errors,
|
---|
301 | and the output of the last command will be of the form:</para>
|
---|
302 |
|
---|
303 | <screen><computeroutput>[Requesting program interpreter: /lib/ld-linux.so.2]</computeroutput></screen>
|
---|
304 |
|
---|
305 | <para>If the output is not shown as above or there was no output at all,
|
---|
306 | then something is wrong. Investigate and retrace the steps to find out
|
---|
307 | where the problem is and correct it. This issue must be resolved before
|
---|
308 | continuing on.</para>
|
---|
309 |
|
---|
310 | <para>Once all is well, clean up the test files:</para>
|
---|
311 |
|
---|
312 | <screen><userinput>rm -v dummy.c a.out</userinput></screen>
|
---|
313 |
|
---|
314 | </caution>
|
---|
315 |
|
---|
316 | </sect2><!-- m32 -->
|
---|
317 |
|
---|
318 | <!-- - - - - - - - - - -->
|
---|
319 | <!-- Multilib - x32bit -->
|
---|
320 | <!-- - - - - - - - - - -->
|
---|
321 |
|
---|
322 | <sect2 arch="ml_x32,ml_all">
|
---|
323 | <title>Building Glibc - x32bit</title>
|
---|
324 |
|
---|
325 | <para>Now recompile for mx32. The extracted source can be
|
---|
326 | reused but needs to be cleaned before installing the mx32
|
---|
327 | version of Glibc.</para>
|
---|
328 |
|
---|
329 | <para>Clear the build directory and remove artefacts from
|
---|
330 | previous build:</para>
|
---|
331 |
|
---|
332 | <screen><userinput remap="pre">make clean
|
---|
333 | find .. -name "*.a" -delete</userinput></screen>
|
---|
334 |
|
---|
335 | <para>Configure Glibc for mx32 with the following commands:</para>
|
---|
336 |
|
---|
337 | <screen><userinput remap="configure">CC="$LFS_TGT-gcc -mx32" \
|
---|
338 | CXX="$LFS_TGT-g++ -mx32" \
|
---|
339 | ../configure \
|
---|
340 | --prefix=/usr \
|
---|
341 | --host=$LFS_TGTX32 \
|
---|
342 | --build=$(../scripts/config.guess) \
|
---|
343 | --enable-kernel=&min-kernel; \
|
---|
344 | --with-headers=$LFS/usr/include \
|
---|
345 | --disable-nscd \
|
---|
346 | --libdir=/usr/libx32 \
|
---|
347 | --libexecdir=/usr/libx32 \
|
---|
348 | libc_cv_slibdir=/usr/libx32</userinput></screen>
|
---|
349 |
|
---|
350 | <para>Compile the package:</para>
|
---|
351 |
|
---|
352 | <screen><userinput remap="make">make</userinput></screen>
|
---|
353 |
|
---|
354 | <para>Install the package:</para>
|
---|
355 |
|
---|
356 | <screen><userinput remap="install">make DESTDIR=$PWD/DESTDIR install
|
---|
357 | cp -a DESTDIR/usr/libx32 $LFS/usr/
|
---|
358 | install -vm644 DESTDIR/usr/include/gnu/{lib-names,stubs}-x32.h \
|
---|
359 | $LFS/usr/include/gnu/
|
---|
360 | ln -svf ../libx32/ld-linux-x32.so.2 $LFS/lib/ld-linux-x32.so.2</userinput></screen>
|
---|
361 |
|
---|
362 | <caution>
|
---|
363 | <para>At this point, it is imperative to stop and ensure that the basic
|
---|
364 | functions (compiling and linking) of the new toolchain are working as
|
---|
365 | expected. To perform a sanity check, run the following commands:</para>
|
---|
366 |
|
---|
367 | <screen><userinput>echo 'int main(){}' > dummy.c
|
---|
368 | $LFS_TGT-gcc -mx32 dummy.c
|
---|
369 | readelf -l a.out | grep '/ld-linux-x32'</userinput></screen>
|
---|
370 |
|
---|
371 | <para>If everything is working correctly, there should be no errors,
|
---|
372 | and the output of the last command will be of the form:</para>
|
---|
373 |
|
---|
374 | <screen><computeroutput>[Requesting program interpreter: /libx32/ld-linux-x32.so.2]</computeroutput></screen>
|
---|
375 |
|
---|
376 | <para>If the output is not shown as above or there was no output at all,
|
---|
377 | then something is wrong. Investigate and retrace the steps to find out
|
---|
378 | where the problem is and correct it. This issue must be resolved before
|
---|
379 | continuing on.</para>
|
---|
380 |
|
---|
381 | <para>Once all is well, clean up the test files:</para>
|
---|
382 |
|
---|
383 | <screen><userinput>rm -v dummy.c a.out</userinput></screen>
|
---|
384 |
|
---|
385 | </caution>
|
---|
386 |
|
---|
387 | </sect2><!-- mx32 -->
|
---|
388 |
|
---|
389 | <sect2 role="content">
|
---|
390 | <title/>
|
---|
391 |
|
---|
392 | <para>Details on this package are located in
|
---|
393 | <xref linkend="contents-glibc" role="."/></para>
|
---|
394 |
|
---|
395 | </sect2>
|
---|
396 |
|
---|
397 | </sect1>
|
---|