| [6370fa6] | 1 | <sect2>
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| 2 | <title>Command explanations</title>
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| 3 |
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| [b822811] | 4 | <para><userinput>--enable-static-link:</userinput> This configure
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| [335838c] | 5 | option causes bash to be linked statically.</para>
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| [6370fa6] | 6 |
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| [b822811] | 7 | <para><userinput>--prefix=$LFS/usr:</userinput> This configure option installs
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| [6370fa6] | 8 | all of Bash's files under the $LFS/usr directory, which becomes the /usr
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| [838d135] | 9 | directory when chroot'ed or reboot'ed into LFS.</para>
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| [6370fa6] | 10 |
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| [b822811] | 11 | <para><userinput>--bindir=$LFS/bin:</userinput> This installs the executable
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| [6370fa6] | 12 | files in $LFS/bin. We do this because we want bash to be in /bin, not in
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| [2f86e05] | 13 | /usr/bin. One reason being: the /usr partition might be on a separate
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| [6370fa6] | 14 | partition which has to be mounted at some point. Before that partition is
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| [2f5db45b] | 15 | mounted you need and will want to have bash available (it will be hard to
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| [b822811] | 16 | execute the boot scripts without a shell for instance).</para>
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| [6370fa6] | 17 |
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| [335838c] | 18 | <para><userinput>--with-curses:</userinput> This causes bash to be
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| [5cce404] | 19 | linked against the curses library instead of the default termcap
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| 20 | library which is becoming obsolete.</para>
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| 21 |
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| 22 | <para>It is not strictly necessary for the static bash to be linked
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| [f3e227c] | 23 | against libncurses (it can link against a static termcap for the time
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| [5cce404] | 24 | being just fine because we will reinstall Bash in chapter 6 anyways,
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| 25 | where we will use libncurses), but it's a good test to make sure that
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| [335838c] | 26 | the Ncurses package has been installed properly. If not, you will get in
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| [5cce404] | 27 | trouble later on in this chapter when you install the Texinfo package.
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| [335838c] | 28 | That package requires ncurses, and termcap can't reliably be used
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| [5cce404] | 29 | there.</para>
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| 30 |
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| [3f12743] | 31 | <para><userinput>ln -sf bash $LFS/bin/sh:</userinput> This command creates
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| 32 | the <filename class="symlink">sh</filename> symlink that points to bash. Most
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| 33 | scripts run themselves via 'sh' (invoked by the #!/bin/sh as the first line
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| 34 | in the scripts) which invokes a special bash mode. Bash will then behave
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| 35 | (as closely as possible) as the original Bourne shell.</para>
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| [6370fa6] | 36 |
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| [b822811] | 37 | <para>The <userinput>&&</userinput>'s at the end of every line cause
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| [335838c] | 38 | the next command to be executed only if the previous command exits
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| [72033583] | 39 | with a return value of 0 indicating success. In case all of these
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| [335838c] | 40 | commands are copy&pasted on the shell, it is important to ensure
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| 41 | that if ./configure fails, make isn't executed and, likewise, if make
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| 42 | fails, that make install isn't executed, and so forth.</para>
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| [6370fa6] | 43 |
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| 44 | </sect2>
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| 45 |
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