[8672967] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?> |
---|
[aa18ac0] | 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" |
---|
| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [ |
---|
[8672967] | 4 | <!ENTITY % general-entities SYSTEM "../../general.ent"> |
---|
| 5 | %general-entities; |
---|
| 6 | ]> |
---|
| 7 | |
---|
| 8 | <sect1 id="ch-cross-tools-variables"> |
---|
| 9 | <?dbhtml filename="variables.html"?> |
---|
| 10 | |
---|
| 11 | <title>Build Variables</title> |
---|
| 12 | |
---|
| 13 | <bridgehead renderas="sect4">Setting Host and Target</bridgehead> |
---|
| 14 | |
---|
| 15 | <para os="a">During the building of the cross-compile tools you will need to |
---|
| 16 | set a few variables that will be dependent on your particular needs. |
---|
[7030b60] | 17 | The first variable will be the triplet of the host machine, which will be |
---|
| 18 | put into the <envar>CLFS_HOST</envar> variable. To account for the |
---|
| 19 | possibility that the host and target are the same arch, as cross-compiling |
---|
| 20 | won't work when host and target are the same, part of the triplet needs to |
---|
| 21 | be changed slightly to add "cross". Set <envar>CLFS_HOST</envar> using the |
---|
| 22 | following command:</para> |
---|
[8672967] | 23 | |
---|
[adea10d] | 24 | <screen role="nodump" os="b"><userinput>export CLFS_HOST=$(echo ${MACHTYPE} | sed -e 's/-[^-]*/-cross/')</userinput></screen> |
---|
[8672967] | 25 | |
---|
[7030b60] | 26 | <para os="c">Now you will need to set the triplet for the target |
---|
| 27 | architecture. Set the target variable using the following command:</para> |
---|
[8672967] | 28 | |
---|
[adea10d] | 29 | <screen role="nodump" os="d"><userinput>export CLFS_TARGET="[target triplet]"</userinput></screen> |
---|
[8672967] | 30 | |
---|
[7030b60] | 31 | <para os="t1">Replace [target triplet] with the appropriate machine triplet |
---|
| 32 | using the table at the bottom of the page.</para> |
---|
[8672967] | 33 | |
---|
[7030b60] | 34 | <bridgehead renderas="sect4">Copy settings to the Environment</bridgehead> |
---|
| 35 | |
---|
| 36 | <para os="e">Now add these to <filename>~/.bashrc</filename>, just in |
---|
[8672967] | 37 | case you have to exit and restart building later:</para> |
---|
| 38 | |
---|
[c63dde1] | 39 | <screen os="f"><userinput>cat >> ~/.bashrc << EOF |
---|
| 40 | export CLFS_HOST="${CLFS_HOST}" |
---|
| 41 | export CLFS_TARGET="${CLFS_TARGET}" |
---|
| 42 | EOF</userinput></screen> |
---|
[8672967] | 43 | |
---|
| 44 | <table os="g"> |
---|
| 45 | <title>Processor Type and Target Triplets</title> |
---|
[d018b81] | 46 | <?dbfo table-width="5in" ?> |
---|
| 47 | |
---|
| 48 | <tgroup cols="2"> |
---|
| 49 | |
---|
| 50 | <colspec colnum="1" colwidth="2.5in" colname="Processor"/> |
---|
| 51 | <colspec colnum="2" colwidth="2.5in" colname="Triplet"/> |
---|
| 52 | |
---|
[8672967] | 53 | <thead> |
---|
| 54 | <row> |
---|
| 55 | <entry>Processor</entry> |
---|
| 56 | <entry>Target Triplet</entry> |
---|
| 57 | </row> |
---|
| 58 | </thead> |
---|
[d018b81] | 59 | |
---|
[8672967] | 60 | <tbody> |
---|
[44426cf] | 61 | <row> |
---|
| 62 | <entry>386 Compatibles</entry> |
---|
| 63 | <entry>Not Supported By Glibc</entry> |
---|
| 64 | </row> |
---|
[8672967] | 65 | <row> |
---|
| 66 | <entry>486 Compatibles</entry> |
---|
[9c8852d] | 67 | <entry>i486-pc-linux-gnu</entry> |
---|
[8672967] | 68 | </row> |
---|
| 69 | <row> |
---|
| 70 | <entry>Pentium, K6, 586 Compatibles</entry> |
---|
[9c8852d] | 71 | <entry>i586-pc-linux-gnu</entry> |
---|
[8672967] | 72 | </row> |
---|
| 73 | <row> |
---|
| 74 | <entry>Pentium II, Pentium III, Pentium 4</entry> |
---|
[9c8852d] | 75 | <entry>i686-pc-linux-gnu</entry> |
---|
[8672967] | 76 | </row> |
---|
| 77 | <row> |
---|
| 78 | <entry>Athlon, Duron</entry> |
---|
[9c8852d] | 79 | <entry>i686-pc-linux-gnu</entry> |
---|
[8672967] | 80 | </row> |
---|
| 81 | </tbody> |
---|
[d018b81] | 82 | |
---|
[8672967] | 83 | </tgroup> |
---|
[d018b81] | 84 | |
---|
[8672967] | 85 | </table> |
---|
| 86 | |
---|
| 87 | </sect1> |
---|