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@@ -3,19 +3,25 @@
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<sect2>
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<title>Glibc installation</title>
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+<para>The Glibc build system is very well self-contained and will install
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+perfectly, even though our compiler specs file and linker scripts are still
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+pointing at <filename>/stage1</filename>. We cannot adjust the specs and
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+ldscripts before the Glibc install, because the Glibc autoconf tests would then
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+give bogus results and thus defeat our goal of achieving a clean build.</para>
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+
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<para>The documentation that comes with Glibc recommends to build the package
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not in the source directory but in a separate, dedicated directory:</para>
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<para><screen><userinput>mkdir ../glibc-build
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cd ../glibc-build</userinput></screen></para>
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-<para>Next, prepare Glibc to be compiled:</para>
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+<para>Now prepare Glibc for compilation:</para>
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<para><screen><userinput>../glibc-&glibc-version;/configure --prefix=/usr \
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--disable-profile --enable-add-ons \
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--libexecdir=/usr/bin --with-headers=/usr/include</userinput></screen></para>
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-<para>The meaning of the configure options are:</para>
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+<para>The meaning of the configure options:</para>
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<itemizedlist>
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<listitem><para><userinput>--disable-profile</userinput>: This disables the
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@@ -28,38 +34,44 @@ add-ons that we installed with Glibc, in our case Linuxthreads.</para></listitem
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<listitem><para><userinput>--libexecdir=/usr/bin</userinput>: This will
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cause the <filename>pt_chown</filename> program to be installed in the
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<filename>/usr/bin</filename> directory.</para></listitem>
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+
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+<listitem><para><userinput>--with-headers=/usr/include</userinput>: This
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+ensures that the kernel headers in <filename>/usr/include</filename> are used
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+for this build. If you don't pass this switch then the headers from
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+<filename>/stage1/include</filename> are used which of course is not ideal
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+(although they should be identical). Using the switch has the advantage
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+that you will be informed immediately should you have forgotten to install the
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+kernel headers into <filename>/usr/include</filename>.</para></listitem>
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</itemizedlist>
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-<para>Continue with compiling the package:</para>
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+<para>Compile the package:</para>
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<para><screen><userinput>make</userinput></screen></para>
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-<para>We'll continue with installing the package. The Linuxthreads man
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-pages are not going to be installed at this point because it requires a
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-working Perl installation. We'll install Perl later on in this chapter,
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-and the man pages will be installed when Glibc is installed for the second
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-time at the end of this chapter.</para>
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+<para>Check the results:</para>
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<para><screen><userinput>make check</userinput></screen></para>
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+<para>And install the package:</para>
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+
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<para><screen><userinput>make install</userinput></screen></para>
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-<para>The locales (used by Glibc to make your Linux system talk in a different
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-language) weren't installed when you ran the previous command, so we have to
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-do that ourselves now:</para>
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+<para>The locales that can make your system respond in a different language
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+weren't installed by the above command. Do it with this:</para>
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<para><screen><userinput>make localedata/install-locales</userinput></screen></para>
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<para>An alternative to running the previous command is to install only those
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-locales which you need or want. This can be achieved using the localedef
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-command. Information on this can be found in the <filename>INSTALL</filename>
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-file in the <filename>glibc-&glibc-version;</filename> tree.</para>
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+locales which you need or want. This can be achieved using the
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+<userinput>localedef</userinput> command. Information on this can be found in
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+the <filename>INSTALL</filename> file in the
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+<filename>glibc-&glibc-version;</filename> tree.</para>
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-<para>Build the linuxthreads man pages:</para>
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+<para>Finally, build the linuxthreads man pages:</para>
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<para><screen><userinput>make -C ../glibc-2.3.2/linuxthreads/man</userinput></screen></para>
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-<para>Install the man pages:</para>
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+<para>And install these pages:</para>
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<para><screen><userinput>make -C ../glibc-2.3.2/linuxthreads/man install</userinput></screen></para>
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Alex Gronenwoud