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>cp malloc/Makefile malloc/Makefile.backup &&
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26 | sed 's%\$(PERL)%/usr/bin/perl%' \
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27 | malloc/Makefile.backup > malloc/Makefile &&
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28 | cp login/Makefile login/Makefile.backup &&
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29 | sed 's/root/0/' login/Makefile.backup > login/Makefile &&
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30 | mkdir ../glibc-build &&
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31 | cd ../glibc-build &&
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32 | ../glibc-&glibc-version;/configure --prefix=/usr \
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33 | --enable-add-ons --libexecdir=/usr/bin &&
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34 | echo "cross-compiling = no" > configparms &&
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35 | make &&
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36 | make install &&
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37 | make localedata/install-locales &&
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38 | exec /static/bin/bash --login</userinput></screen></para>
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39 |
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40 | <para>An alternative to running <userinput>make
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41 | localedata/install-locales</userinput> is to only install those locales
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42 | which you need or want. This can be achieved using the localedef
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43 | command. Information on this can be found in the INSTALL
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44 | file in the glibc-&glibc-version; tree. One thing to note is that the
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45 | <userinput>localedef</userinput> program assumes that the <filename
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46 | class="directory">/usr/lib/locale</filename> directory exists, so you need
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47 | to create it first.</para>
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48 |
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49 | <para>During the configure stage you will see the following warning:</para>
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50 |
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51 | <blockquote><screen>configure: warning:
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52 | *** These auxiliary programs are missing or too old: msgfmt
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53 | *** some features will be disabled.
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54 | *** Check the INSTALL file for required versions.</screen></blockquote>
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55 |
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56 | <para>The missing msgfmt (from the gettext package which we will install
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57 | later in this chapter) won't cause any problems. msgfmt is used to generate
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58 | the binary translation files that are used to make your system talk in a
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59 | different language. Because these translation files have already been
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60 | generated for you, there is no need for msgfmt. You'd only need msgfmt if
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61 | you change the translation source files (the <filename>*.po</filename>
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62 | files in the <filename class="directory">po</filename> subdirectory) which\
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63 | would require you to re-generate the binary files.</para>
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64 |
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65 | </sect2>
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66 |
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