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  • BOOK/cross-tools/arm/variables.xml

    rb220338 r7926af1  
    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 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>
     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>
    2421
    2522  <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
     
    3229
    3330<screen os="d"><userinput>export CLFS_ARCH=arm
    34 export CLFS_ENDIAN="<replaceable>[endianess]</replaceable>"</userinput></screen>
    35 
    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>"
    40 export 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>
     31export CLFS_ENDIAN=<replaceable>[endianess]</replaceable></userinput></screen>
    5432
    5533  <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
     
    5735  xpointer="xpointer(//*[@os='g'])"/>
    5836
    59 <screen os="h"><userinput>echo export CLFS_HOST=\""${CLFS_HOST}\"" &gt;&gt; ~/.bashrc
    60 echo export CLFS_TARGET=\""${CLFS_TARGET}\"" &gt;&gt; ~/.bashrc
    61 echo export CLFS_ARCH=\""${CLFS_ARCH}\"" &gt;&gt; ~/.bashrc
    62 echo export CLFS_ENDIAN=\""${CLFS_ENDIAN}\"" &gt;&gt; ~/.bashrc
    63 echo export CLFS_ARM_ARCH=\""${CLFS_ARM_ARCH}\"" &gt;&gt; ~/.bashrc
    64 echo export CLFS_ARM_MODE=\""${CLFS_ARM_MODE}\"" &gt;&gt; ~/.bashrc
    65 echo export CLFS_FLOAT=\""${CLFS_FLOAT}\"" &gt;&gt; ~/.bashrc
    66 echo export CLFS_FPU=\""${CLFS_FPU}\"" &gt;&gt; ~/.bashrc</userinput></screen>
     37  <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
     38  href="../common/variables.xml"
     39  xpointer="xpointer(//*[@os='h'])"/>
    6740
    6841  <table os="i">
    69     <title>Example Processor Type, ABI, and  Target Triplets</title>
     42    <title>Processor Type, ABI, and  Target Triplets</title>
    7043    <?dbfo table-width="7in" ?>
    7144
     
    7346
    7447      <colspec colnum="1" colwidth="2.5in" colname="Processor"/>
    75       <colspec colnum="2" colwidth="1in" colname="Endianess"/>
     48      <colspec colnum="2" colwidth="1in" colname="Endian"/>
    7649      <colspec colnum="3" colwidth="1in" colname="ABI"/>
    7750      <colspec colnum="4" colwidth="2.5in" colname="Triplet"/>
     
    8053        <row>
    8154          <entry>Processor</entry>
    82           <entry>Endianess</entry>
     55          <entry>Endian</entry>
    8356          <entry>ABI</entry>
    8457          <entry>Target Triplet</entry>
     
    10376          <entry>little</entry>
    10477          <entry>EABI</entry>
    105           <entry>armv5l-unknown-linux-uclibceabi</entry>
     78          <entry>armv5l-unknown-linux-uclibcgnueabi</entry>
    10679        </row>
    10780        <row>
     
    10982          <entry>big</entry>
    11083          <entry>EABI</entry>
    111           <entry>armv5b-unknown-linux-uclibceabi</entry>
     84          <entry>armv5b-unknown-linux-uclibcgnueabi</entry>
    11285        </row>
    11386        <row>
     
    11588          <entry>little</entry>
    11689          <entry>EABI</entry>
    117           <entry>arm-unknown-linux-uclibceabi</entry>
     90          <entry>arm-unknown-linux-uclibcgnueabi</entry>
    11891        </row>
    11992        <row>
     
    12194          <entry>little</entry>
    12295          <entry>EABI</entry>
    123           <entry>armv7a-unknown-linux-uclibceabi</entry>
     96          <entry>armv7a-unknown-linux-uclibcgnueabi</entry>
    12497        </row>
    12598      </tbody>
     
    129102  </table>
    130103
    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 
    224104</sect1>
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