1 | <sect2><title> </title><para> </para></sect2>
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2 |
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3 | <sect2>
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4 | <title>Glibc installation</title>
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5 |
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6 | <para>Before starting to install Glibc, you must <userinput>cd</userinput>
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7 | into the <filename>glibc-&glibc-version;</filename> directory and unpack
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8 | Glibc-linuxthreads in that directory, not in <filename>/usr/src</filename> as
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9 | you would normally do.</para>
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10 |
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11 | <para>This package is known to behave badly when you have changed its
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12 | default optimization flags (including the -march and -mcpu options).
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13 | Therefore, if you have defined any environment variables that override
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14 | default optimizations, such as CFLAGS and CXXFLAGS, we recommend unsetting
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15 | them when building Glibc.</para>
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16 |
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17 | <para>Basically, compiling Glibc in any other way than the book suggests
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18 | is putting your system at a very high risk.</para>
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19 |
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20 | <para>The documentation that comes with Glibc recommends to build the package
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21 | not in the source directory but in a separate, dedicated directory:</para>
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22 |
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23 | <para><screen><userinput>mkdir ../glibc-build &&
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24 | cd ../glibc-build</userinput></screen></para>
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25 |
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26 | <para>Next, prepare Glibc to be compiled:</para>
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27 |
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28 | <para><screen><userinput>../glibc-&glibc-version;/configure --prefix=/stage1 \
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29 | --disable-profile --enable-add-ons \
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30 | --with-headers=/stage1/include \
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31 | --with-binutils=/stage1/bin \
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32 | --without-gd</userinput></screen></para>
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33 |
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34 | <para>The meaning of the configure options are:</para>
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35 |
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36 | <itemizedlist>
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37 | <listitem><para><userinput>--disable-profile</userinput>: This disables the
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38 | building of the libraries with profiling information. Omit this option if you
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39 | plan to do profiling.</para></listitem>
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40 |
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41 | <listitem><para><userinput>--enable-add-ons</userinput>: This enables any
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42 | add-ons that we installed with Glibc, in our case Linuxthreads.</para></listitem>
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43 |
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44 | <listitem><para><userinput>--libexecdir=/usr/bin</userinput>: This will
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45 | cause the <filename>pt_chown</filename> program to be installed in the
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46 | <filename>/usr/bin</filename> directory.</para></listitem>
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47 | </itemizedlist>
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48 |
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49 | <para>During this 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 <filename>msgfmt</filename> program (from the Gettext
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57 | package, which we'll install later) won't cause any problems. The
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58 | <filename>msgfmt</filename> is used to generate the binary translation
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59 | files that can make your system talk in a different language. Because these
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60 | translation files have already been generated for you, there is no need for
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61 | <filename>msgfmt</filename>. You'd only need the program if you change the
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62 | translation source files (the <filename>*.po</filename> files in the
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63 | <filename class="directory">po</filename> subdirectory), which
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64 | would require you to regenerate the binary files.</para>
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65 |
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66 | <para>Continue with compiling the package:</para>
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67 |
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68 | <para><screen><userinput>make
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69 | make check
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70 | make install</userinput></screen></para>
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71 |
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72 | <para>The locales (used by Glibc to make your Linux system talk in a different
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73 | language) weren't installed when you ran the previous command, so we have to
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74 | do that ourselves now:</para>
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75 |
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76 | <para><screen><userinput>make localedata/install-locales</userinput></screen></para>
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77 |
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78 | <para>An alternative to running the previous command is to install only those
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79 | locales which you need or want. This can be achieved using the localedef
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80 | command. Information on this can be found in the <filename>INSTALL</filename>
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81 | file in the <filename>glibc-&glibc-version;</filename> tree.</para>
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82 |
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83 | </sect2>
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84 |
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