1 | <sect2><title> </title><para> </para></sect2>
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2 |
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3 | <sect2>
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4 | <title>Installation of Glibc</title>
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5 |
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6 | <para>At the beginning of this chapter you installed Glibc and applied a
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7 | patch to it. Part of this patch was undoing some changes to make static
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8 | binaries compiled against Glibc-2.2 work. However, this is not what the
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9 | Glibc developers intended and we don't need to keep this modified Glibc
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10 | around. So we reinstall Glibc here to remove this patch.</para>
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11 |
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12 | <para>A second reason to install Glibc again is because it's considered
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13 | cleaner. The first Glibc was installed using programs compiled on your host
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14 | distribution which sometimes has the effect of tainting Glibc. While this
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15 | isn't a problem with the other packages compiled early in this chapter, for
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16 | Glibc we want to be sure it's 100% OK (although feel free to reinstall
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17 | other packages at this point so you can say you compiled an LFS system with
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18 | LFS. Much like GCC's bootstrap installation method).</para>
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19 |
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20 | <para>We'll also install the linuxthreads man pages here. As you may
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21 | recall, during the first installation of Glibc this wasn't possible because
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22 | Perl wasn't installed yet. Now that everything needed to install the Glibc
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23 | linuxthreads man pages is present as well, we will install those too.</para>
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24 |
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25 | <para>Before starting to install Glibc, you must cd into the
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26 | glibc-&glibc-version; directory and unpack glibc-linuxthreads inside
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27 | the glibc-&glibc-version; directory, not in /usr/src as you normally
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28 | would do.</para>
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29 |
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30 | <para>This package is known to behave badly when you have changed its
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31 | default optimization flags (including the -march and -mcpu options).
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32 | Therefore, if you have defined any environment variables that override
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33 | default optimizations, such as CFLAGS and CXXFLAGS, we recommend unsetting
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34 | or modifying them when building Glibc. You have been warned.</para>
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35 |
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36 | <para>Basically, compiling Glibc in any other way than the book suggests
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37 | is putting your system at very high risk.</para>
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38 |
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39 | <para>It is recommended by the Glibc installation documentation to build
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40 | Glibc outside of the source tree. Create the build directory:</para>
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41 |
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42 | <para><screen><userinput>mkdir ../glibc-build &&
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43 | cd ../glibc-build</userinput></screen></para>
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44 |
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45 | <para>Next, prepare Glibc to be compiled:</para>
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46 |
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47 | <para><screen><userinput>../glibc-&glibc-version;/configure --prefix=/usr --disable-profile \
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48 | --enable-add-ons --libexecdir=/usr/bin</userinput></screen></para>
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49 |
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50 | <para>Continue with compiling the package:</para>
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51 |
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52 | <para><screen><userinput>make</userinput></screen></para>
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53 |
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54 | <para>Begin package installation:</para>
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55 |
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56 | <para><screen><userinput>make install</userinput></screen></para>
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57 |
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58 | <para>Build the linuxthreads man pages:</para>
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59 |
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60 | <para><screen><userinput>make -C ../glibc-&glibc-version;/linuxthreads/man</userinput></screen></para>
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61 |
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62 | <para>Install the man pages:</para>
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63 |
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64 | <para><screen><userinput>make -C ../glibc-&glibc-version;/linuxthreads/man install</userinput></screen></para>
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65 |
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66 | <para>Complete package installation by relaunching bash:</para>
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67 |
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68 | <para><screen><userinput>exec /bin/bash --login</userinput></screen></para>
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69 |
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70 | </sect2>
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71 |
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