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