source: cross-tools/x86_64/flags.xml @ bf8c11f

Last change on this file since bf8c11f was bf8c11f, checked in by Jim Gifford <clfs@…>, 18 years ago

r627@server (orig r625): jim | 2005-10-31 12:59:34 -0800
Import of Cross-LFS Book

  • Property mode set to 100644
File size: 1.8 KB
Line 
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-flags">
9  <?dbhtml filename="flags.html"?>
10
11  <title>Build Flags</title>
12
13  <para>We will need to setup target specific flags for the compiler
14  and linkers.</para>
15
16<screen><userinput>export BUILD32="-m32"
17export BUILD64="-m64"</userinput></screen>
18
19  <para>You will need to set your host target triplet for 32 bit:</para>
20
21<screen><userinput>export LFS_TARGET32="i686-pc-linux-gnu"</userinput></screen>
22
23  <para>Let's perform a sanity check to prevent build issues. If our LFS_HOST matches our
24  target, we will get some failures during our cross-compile:</para>
25
26<screen><userinput>if [ "${LFS_HOST}" = "${LFS_TARGET32}" ]; then \
27  echo "Host and Target can't be the same." ; fi</userinput></screen>
28
29  <para>If the above test gave you "Host and Target can't be the same", you will need to change your LFS_HOST to a
30  a different target triplet:</para>
31
32  <para>If the above test gave you an error, you will need to change your LFS_HOST to a
33  a different target triplet:</para>
34
35<screen><userinput>export LFS_HOST="`echo ${MACHTYPE} | sed -e 's/unknown/cross/g' -e 's/-pc-/-cross-/g'`"</userinput></screen>
36
37  <para>Lets add the build flags to <filename>~/.bashrc</filename> to
38  prevent issues if we stop and come back later.</para>
39
40<screen><userinput>echo export BUILD32=\""${BUILD32}\"" &gt;&gt; ~/.bashrc
41echo export BUILD64=\""${BUILD64}\"" &gt;&gt; ~/.bashrc
42echo export LFS_TARGET32=\""${LFS_TARGET32}\"" &gt;&gt; ~/.bashrc
43echo export LFS_HOST=\""${LFS_HOST}\"" &gt;&gt; ~/.bashrc</userinput></screen>
44
45</sect1>
Note: See TracBrowser for help on using the repository browser.