[99fc891] | 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 CLFS_HOST="$(echo $MACHTYPE | sed "s/$(echo $MACHTYPE | cut -d- -f2)/cross/")"</userinput></screen> |
---|
| 23 | |
---|
| 24 | <para os="c">Now you will need to set the target triplet for the target |
---|
| 25 | architecture. You can do this by running the same command as above, just |
---|
| 26 | running it on the target machine. If you can't run the command on the |
---|
| 27 | target machine, you can use the table at the bottom of this page. Set |
---|
| 28 | the command using the method listed below:</para> |
---|
| 29 | |
---|
| 30 | <screen os="d"><userinput>export CLFS_TARGET="{target tripplet}"</userinput></screen> |
---|
| 31 | |
---|
| 32 | <para os="e">Now we will add these to <filename>~/.bashrc</filename>, just in |
---|
| 33 | case you have to exit and restart building later:</para> |
---|
| 34 | |
---|
| 35 | <screen os="f"><userinput>echo export CLFS_HOST=\""${CLFS_HOST}\"" >> ~/.bashrc |
---|
| 36 | echo export CLFS_TARGET=\""${CLFS_TARGET}\"" >> ~/.bashrc</userinput></screen> |
---|
| 37 | |
---|
| 38 | <table os="g"> |
---|
| 39 | <title>Processor Type and Target Triplets</title> |
---|
| 40 | <tgroup cols="2" align="center"> |
---|
| 41 | <colspec colname="Processor"/> |
---|
| 42 | <colspec colname="Triplet"/> |
---|
| 43 | <thead> |
---|
| 44 | <row> |
---|
| 45 | <entry>Processor</entry> |
---|
| 46 | <entry>Target Triplet</entry> |
---|
| 47 | </row> |
---|
| 48 | </thead> |
---|
| 49 | <tbody> |
---|
| 50 | <row> |
---|
| 51 | <entry>MIPS 32 bits Little Endian</entry> |
---|
| 52 | <entry>mipsel-unknown-linux-uclibc</entry> |
---|
| 53 | </row> |
---|
| 54 | <row> |
---|
| 55 | <entry>MIPS 32 bits Big Endian</entry> |
---|
| 56 | <entry>mips-unknown-linux-uclibc</entry> |
---|
| 57 | </row> |
---|
| 58 | <row> |
---|
| 59 | <entry>MIPS 64 bits Little Endian</entry> |
---|
| 60 | <entry>mips64el-unknown-linux-uclibc</entry> |
---|
| 61 | </row> |
---|
| 62 | <row> |
---|
| 63 | <entry>MIPS 64 bits Big Endian</entry> |
---|
| 64 | <entry>mips64-unknown-linux-uclibc</entry> |
---|
| 65 | </row> |
---|
| 66 | </tbody> |
---|
| 67 | </tgroup> |
---|
| 68 | </table> |
---|
| 69 | |
---|
| 70 | </sect1> |
---|