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added 2nd glibc install files

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git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@2247 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
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Gerard Beekmans 2002-12-31 16:38:46 +00:00
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<sect2>
<title>Installation of Glibc</title>
<para>At the beginning of this chapter you installed Glibc and applied a
patch to it. Part of this patch was undoing some changes to make static
binaries compiled against Glibc-2.2 work. However, this is not what the
Glibc developers intended and we don't need to keep this modified Glibc
around. So we reinstall Glibc here to remove this patch.</para>
<para>A second reason to install Glibc again is because it's considered
cleaner. The first Glibc was installed using programs compiled on your host
distribution which sometimes has the effect of tainting Glibc. While this
isn't a problem with the other packages compiled early in this chapter, for
Glibc we want to be sure it's 100% OK (although feel free to reinstall
other packages at this point so you can say you compiled an LFS system with
LFS. Much like GCC's bootstrap installation method).</para>
<para>We'll also install the linuxthreads man pages here. As you may
recall, during the first installation of Glibc this wasn't possible because
Perl wasn't installed yet. Everything we need to install the Glibc
linuxthread man pages is present now, so we'll take care of this too
now.</para>
<para>Before starting to install glibc, you must cd into the
glibc-&glibc-version; directory and unpack glibc-linuxthreads inside
the glibc-&glibc-version; directory, not in /usr/src as you normally
would do.</para>
<para>This package is known to behave badly when you have changed its
default optimization flags (including the -march and -mcpu options). Glibc
is best left alone. Therefore, if you have defined any environment variables
that override default optimizations, such as CFLAGS and CXXFLAGS, we
recommend unsetting or modifying them when building Glibc. You have
been warned.</para>
<para>Basically, compiling Glibc in any other way than the book suggests
is putting your system at very high risk.</para>
<para>Install Glibc by running the following commands:</para>
<para><screen><userinput>mkdir ../glibc-build &amp;&amp;
cd ../glibc-build &amp;&amp;
../glibc-&glibc-version;/configure --prefix=/usr --disable-profile \
&nbsp;&nbsp;&nbsp;&nbsp;--enable-add-ons --libexecdir=/usr/bin &amp;&amp;
make &amp;&amp;
make install &amp;&amp;
make -C linuxthreads/man &amp;&amp;
make -C linuxthread/man install &amp;&amp;
exec /static/bin/bash --login</userinput></screen></para>
</sect2>

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<sect1 id="ch06-glibc-pass2">
<title>Installing Glibc-&glibc-version;</title>
<?dbhtml filename="glibc-pass2.html" dir="chapter06"?>
<screen>Estimated build time: &glibc-time;
Estimated required disk space: &glibc-compsize;</screen>
&c6-glibc-pass2-inst;
</sect1>