Changeset b220338 in clfs-embedded


Ignore:
Timestamp:
Feb 22, 2011, 4:22:44 AM (10 years ago)
Author:
Andrew Bradford <bradfa@…>
Branches:
master
Children:
18d1bcd
Parents:
15b97d6
Message:

Added ARM choices to enable --disable-multilib

Added info on choosing everything that's needed in order to use
--disable-multilib:
float, mode, fpu, and arch (already had abi).

File:
1 edited

Legend:

Unmodified
Added
Removed
  • BOOK/cross-tools/arm/variables.xml

    r15b97d6 rb220338  
    1313  <bridgehead renderas="sect4">Setting Host and Target</bridgehead>
    1414
    15   <para os="a">During the building of the cross-compile tools you will need to
     15  <para os="a">During the building of the cross-compile tools, you will need to
    1616  set a few variables that will be dependent on your particular needs.
    17   You will need to set the target triplet for the target architecture and CPU
    18   endianess. If you do not know what triplet or endianess you want,
    19   you can use the table at the bottom of this page as a reference. Set
    20   the command using the method listed below:</para>
     17  You will need to select the target triplet for the target architecture, the CPU
     18  endianess, the CPU architecture, the CPU mode, the CPU floating point hardware
     19  availability, and (if available) the type of floating point hardware. If you
     20  do not know what values can be chosen for each of these, you can use the
     21  tables at the bottom of this page as a reference.</para>
     22
     23  <para os="a1">First, set the host and target triplets:</para>
    2124
    2225  <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
     
    3134export CLFS_ENDIAN="<replaceable>[endianess]</replaceable>"</userinput></screen>
    3235
     36  <para os="e">Choose the ARM architecture (see table below) and mode of
     37  your CPU:</para>
     38
     39<screen os="f"><userinput>export CLFS_ARM_ARCH="<replaceable>[architecture]</replaceable>"
     40export CLFS_ARM_MODE="<replaceable>[arm or thumb]</replaceable>"</userinput></screen>
     41
     42  <para os="f1">If your target CPU has hard floating point support (not all ARM
     43  CPUs do), set the following CLFS_FLOAT variable to either "hard" or "softfp".
     44  If your target CPU does not have hard floating point support, set the following
     45  CLFS_FLOAT vairable to "soft".</para>
     46
     47<screen os="f2"><userinput>export CLFS_FLOAT="<replaceable>[hard, softfp, or soft]"</replaceable></userinput></screen>
     48
     49  <para os="f3">If you chose either "hard" or "softfp" for CLFS_FLOAT, you now
     50  need to set which floating point hardware is actually included (see table below)
     51  with your ARM CPU:</para>
     52
     53<screen os="f4"><userinput>export CLFS_FPU="<replaceable>[fpu version]</replaceable>"</userinput></screen>
     54
    3355  <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
    3456  href="../common/variables.xml"
    3557  xpointer="xpointer(//*[@os='g'])"/>
    3658
    37   <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
    38   href="../common/variables.xml"
    39   xpointer="xpointer(//*[@os='h'])"/>
     59<screen os="h"><userinput>echo export CLFS_HOST=\""${CLFS_HOST}\"" &gt;&gt; ~/.bashrc
     60echo export CLFS_TARGET=\""${CLFS_TARGET}\"" &gt;&gt; ~/.bashrc
     61echo export CLFS_ARCH=\""${CLFS_ARCH}\"" &gt;&gt; ~/.bashrc
     62echo export CLFS_ENDIAN=\""${CLFS_ENDIAN}\"" &gt;&gt; ~/.bashrc
     63echo export CLFS_ARM_ARCH=\""${CLFS_ARM_ARCH}\"" &gt;&gt; ~/.bashrc
     64echo export CLFS_ARM_MODE=\""${CLFS_ARM_MODE}\"" &gt;&gt; ~/.bashrc
     65echo export CLFS_FLOAT=\""${CLFS_FLOAT}\"" &gt;&gt; ~/.bashrc
     66echo export CLFS_FPU=\""${CLFS_FPU}\"" &gt;&gt; ~/.bashrc</userinput></screen>
    4067
    4168  <table os="i">
    42     <title>Processor Type, ABI, and  Target Triplets</title>
     69    <title>Example Processor Type, ABI, and  Target Triplets</title>
    4370    <?dbfo table-width="7in" ?>
    4471
     
    102129  </table>
    103130
     131  <table os="j">
     132    <title>ARM Archiecture Choices</title>
     133    <?dbfo table-width="4in" ?>
     134
     135    <tgroup cols="2">
     136
     137      <colspec colnum="1" colwidth="1in" colname="Arch Choice"/>
     138      <colspec colnum="2" colwidth="1in" colname="Arch Choice"/>
     139      <colspec colnum="3" colwidth="1in" colname="Arch Choice"/>
     140      <colspec colnum="4" colwidth="1in" colname="Arch Choice"/>
     141
     142      <tbody>
     143        <row>
     144          <entry>armv2</entry>
     145          <entry>armv2a</entry>
     146          <entry>armv3</entry>
     147          <entry>armv3m</entry>
     148        </row>
     149        <row>
     150          <entry>armv4</entry>
     151          <entry>armv4t</entry>
     152          <entry>armv5</entry>
     153          <entry>armv5t</entry>
     154        </row>
     155        <row>
     156          <entry>armv5te</entry>
     157          <entry>armv6</entry>
     158          <entry>armv6j</entry>
     159          <entry>armv6t2</entry>
     160        </row>
     161        <row>
     162          <entry>armv6z</entry>
     163          <entry>armv6zk</entry>
     164          <entry>armv6-m</entry>
     165          <entry>armv7</entry>
     166        </row>
     167        <row>
     168          <entry>armv7-a</entry>
     169          <entry>armv7-r</entry>
     170          <entry>armv7-m</entry>
     171          <entry>iwmmxt</entry>
     172        </row>
     173        <row>
     174          <entry>iwmmxt2</entry>
     175          <entry>ep9312</entry>
     176        </row>
     177      </tbody>
     178    </tgroup>
     179  </table>
     180
     181  <table os="j">
     182    <title>ARM Hard Floating Point Versions</title>
     183    <?dbfo table-width="4in" ?>
     184
     185    <tgroup cols="2">
     186
     187      <colspec colnum="1" colwidth="1in" colname="FPU Choice"/>
     188      <colspec colnum="2" colwidth="1in" colname="FPU Choice"/>
     189      <colspec colnum="3" colwidth="1in" colname="FPU Choice"/>
     190      <colspec colnum="4" colwidth="1in" colname="FPU Choice"/>
     191
     192      <tbody>
     193        <row>
     194          <entry>fpa</entry>
     195          <entry>fpe2</entry>
     196          <entry>fpe3</entry>
     197          <entry>maverick</entry>
     198        </row>
     199        <row>
     200          <entry>vfp</entry>
     201          <entry>vfpv3</entry>
     202          <entry>vfpv3-fp16</entry>
     203          <entry>vfpv3-d16</entry>
     204        </row>
     205        <row>
     206          <entry>vfpv3-d16-fp16</entry>
     207          <entry>vfpv3xd</entry>
     208          <entry>vfpv3xd-fp16</entry>
     209          <entry>neon</entry>
     210        </row>
     211        <row>
     212          <entry>neon-fp16</entry>
     213          <entry>vfpv4</entry>
     214          <entry>vfpv4-d16</entry>
     215          <entry>fpv4-sp-d16</entry>
     216        </row>
     217        <row>
     218          <entry>neon-vfpv4</entry>
     219        </row>
     220      </tbody>
     221    </tgroup>
     222  </table>
     223
    104224</sect1>
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