[8672967] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?> |
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| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" |
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| 3 | "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [ |
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| 4 | <!ENTITY % general-entities SYSTEM "../../general.ent"> |
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| 5 | %general-entities; |
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| 6 | ]> |
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| 7 | |
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| 8 | <sect1 id="ch-cross-tools-variables"> |
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| 9 | <?dbhtml filename="variables.html"?> |
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| 10 | |
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| 11 | <title>Build Variables</title> |
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| 12 | |
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| 13 | <bridgehead renderas="sect4">Setting Host and Target</bridgehead> |
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| 14 | |
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| 15 | <para os="a">During the building of the cross-compile tools you will need to |
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| 16 | set a few variables that will be dependent on your particular needs. |
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| 17 | The first variable will be the triplet of the <envar>HOST</envar> machine. |
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| 18 | You will need to set the <envar>CHOST</envar> triplet to match your |
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| 19 | particular needs. To set this information you can issue the following |
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| 20 | command:</para> |
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| 21 | |
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| 22 | <screen os="b"><userinput>export LFS_HOST="`echo ${MACHTYPE} | sed -e 's/unknown/cross/g' -e 's/-pc-/-cross-/g'`"</userinput></screen> |
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| 23 | |
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| 24 | <para os="c">Now you will need to set the target triplet for the target |
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| 25 | architecture. You can do this by running the same command as above, just |
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| 26 | running it on the target machine. If you can't run the command on the |
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| 27 | target machine, you can use the table at the bottom of this page. Set |
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| 28 | the command using the method listed below:</para> |
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| 29 | |
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| 30 | <screen os="d"><userinput>export LFS_TARGET="{target triplet}"</userinput></screen> |
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| 31 | |
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| 32 | <bridgehead renderas="sect4">Copy settings to Environment</bridgehead> |
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| 33 | |
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| 34 | <para os="e">Now we will add these to <filename>~/.bashrc</filename>, just in |
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| 35 | case you have to exit and restart building later:</para> |
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| 36 | |
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| 37 | <screen os="f"><userinput>echo export LFS_HOST=\""${LFS_HOST}\"" >> ~/.bashrc |
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| 38 | echo export LFS_TARGET=\""${LFS_TARGET}\"" >> ~/.bashrc</userinput></screen> |
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| 39 | |
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| 40 | <table os="g"> |
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| 41 | <title>Processor Type and Target Triplets</title> |
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| 42 | <tgroup cols="2" align="center"> |
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| 43 | <colspec colname="Processor"/> |
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| 44 | <colspec colname="Triplet"/> |
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| 45 | <thead> |
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| 46 | <row> |
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| 47 | <entry>Processor</entry> |
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| 48 | <entry>Target Triplet</entry> |
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| 49 | </row> |
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| 50 | </thead> |
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| 51 | <tbody> |
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| 52 | <row> |
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| 53 | <entry>486 Compatibles</entry> |
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| 54 | <entry>i486-pc-linux-gnu</entry> |
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| 55 | </row> |
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| 56 | <row> |
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| 57 | <entry>Pentium, K6, 586 Compatibles</entry> |
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| 58 | <entry>i586-pc-linux-gnu</entry> |
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| 59 | </row> |
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| 60 | <row> |
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| 61 | <entry>Pentium II, Pentium III, Pentium 4</entry> |
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| 62 | <entry>i686-pc-linux-gnu</entry> |
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| 63 | </row> |
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| 64 | <row> |
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| 65 | <entry>Athlon, Duron</entry> |
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| 66 | <entry>i686-pc-linux-gnu</entry> |
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| 67 | </row> |
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| 68 | </tbody> |
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| 69 | </tgroup> |
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| 70 | </table> |
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| 71 | |
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| 72 | </sect1> |
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