| 1 | <sect2>
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| 2 | <title>Installation of Glibc</title>
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| 3 |
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| 4 | <para>Before starting to install glibc, you must cd into the
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| 5 | glibc-&glibc-version; directory and unpack glibc-linuxthreads inside
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| 6 | the glibc-&glibc-version; directory, not in /usr/src as you normally
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| 7 | would do.</para>
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| 8 |
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| 9 | <para>This package is known to behave badly when you have changed its
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| 10 | default optimization flags (including the -march and -mcpu options). Glibc
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| 11 | is best left alone. Therefore, if you have defined any environment variables
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| 12 | that override default optimizations, such as CFLAGS and CXXFLAGS, we
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| 13 | recommend unsetting or modifying them when building binutils. You have
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| 14 | been warned.</para>
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| 15 |
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| 16 | <para>Also, don't pass the --enable-kernel option to the configure
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| 17 | script. It's known to cause segmentation faults when other packages like
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| 18 | fileutils, make and tar are linked against it.</para>
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| 19 |
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| 20 | <para>Basically, compiling Glibc in any other way than the book suggests
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| 21 | is putting your system at very high risk.</para>
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| 22 |
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| 23 | <para>Install Glibc by running the following commands:</para>
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| 24 |
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| 25 | <para><screen><userinput>mknod -m 0666 /dev/null c 1 3 &&
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| 26 | touch /etc/ld.so.conf &&
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| 27 | cp malloc/Makefile malloc/Makefile.backup &&
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| 28 | sed 's%\$(PERL)%/usr/bin/perl%' \
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| 29 | malloc/Makefile.backup > malloc/Makefile &&
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| 30 | cp login/Makefile login/Makefile.backup &&
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| 31 | sed 's/root/0/' login/Makefile.backup > login/Makefile &&
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| 32 | mkdir ../glibc-build &&
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| 33 | cd ../glibc-build &&
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| 34 | ../glibc-&glibc-version;/configure --prefix=/usr \
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| 35 | --enable-add-ons --libexecdir=/usr/bin &&
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| 36 | echo "cross-compiling = no" > configparms &&
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| 37 | make &&
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| 38 | make install &&
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| 39 | make localedata/install-locales &&
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| 40 | exec /bin/bash --login</userinput></screen></para>
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| 41 |
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| 42 | <para>An alternative to running <userinput>make
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| 43 | localedata/install-locales</userinput> is to only install those locales
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| 44 | which you need or want. This can be achieved using the localedef
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| 45 | command. Information on this can be found in the INSTALL
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| 46 | file in the glibc-&glibc-version; tree. One thing to note is that the
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| 47 | <userinput>localedef</userinput> program assumes that the <filename
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| 48 | class="directory">/usr/lib/locale</filename> directory exists, so you need
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| 49 | to create it first.</para>
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| 50 |
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| 51 | <para>During the configure stage you will see the following warning:</para>
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| 52 |
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| 53 | <blockquote><screen>configure: warning:
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| 54 | *** These auxiliary programs are missing or too old: msgfmt
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| 55 | *** some features will be disabled.
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| 56 | *** Check the INSTALL file for required versions.</screen></blockquote>
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| 57 |
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| 58 | <para>The missing msgfmt (from the gettext package which we will install
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| 59 | later in this chapter) won't cause any problems. msgfmt is used to generate
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| 60 | the binary translation files that are used to make your system talk in a
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| 61 | different language. Because these translation files have already been
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| 62 | generated for you, there is no need for msgfmt. You'd only need msgfmt if
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| 63 | you change the translation source files (the <filename>*.po</filename>
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| 64 | files in the <filename class="directory">po</filename> subdirectory) which\
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| 65 | would require you to re-generate the binary files.</para>
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| 66 |
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| 67 | </sect2>
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| 68 |
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