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  • chapter05/glibc.xml

    rdea5385 r360fdfca  
    4848    operation of the dynamic library loader:</para>
    4949
    50 <screen arch="default"><userinput remap="pre">case $(uname -m) in
     50<screen><userinput remap="pre">case $(uname -m) in
    5151    i?86)   ln -sfv ld-linux.so.2 $LFS/lib/ld-lsb.so.3
    5252    ;;
    … …  
    5555    ;;
    5656esac</userinput></screen>
    57 <!-- no ld-linux.so.2 here as multilib is based on x86_64, not on i686 -->
    58 <screen arch="ml_32,ml_x32,ml_all"><userinput remap="pre">ln -sfv ../lib/ld-linux-x86-64.so.2 $LFS/lib64
    59 ln -sfv ../lib/ld-linux-x86-64.so.2 $LFS/lib64/ld-lsb-x86-64.so.3</userinput></screen>
    6057
    6158    <note>
    … …  
    217214<screen><computeroutput>[Requesting program interpreter: /lib64/ld-linux-x86-64.so.2]</computeroutput></screen>
    218215
    219       <para arch="default">Note that for 32-bit machines, the interpreter name will be
     216      <para>Note that for 32-bit machines, the interpreter name will be
    220217      <filename>/lib/ld-linux.so.2</filename>.</para>
    221218
    … …  
    245242  </sect2>
    246243
    247   <!-- - - - - - - - - - -->
    248   <!-- Multilib - 32bit  -->
    249   <!-- - - - - - - - - - -->
    250   <sect2 arch="ml_32,ml_all">
    251     <title>Building Glibc - 32bit</title>
    252 
    253     <para>Now recompile for m32. The extracted source can be
    254     reused but needs to be cleaned before installing the m32
    255     version of Glibc.</para>
    256 
    257     <para>Clear the build directory and remove artefacts from
    258     previous build:</para>
    259      
    260 <screen><userinput remap="pre">make clean
    261 find .. -name "*.a" -delete</userinput></screen>
    262 
    263     <para>Configure Glibc for m32 with the following commands:</para>
    264 
    265 <screen><userinput remap="configure">CC="$LFS_TGT-gcc -m32" \
    266 CXX="$LFS_TGT-g++ -m32" \
    267 ../configure                             \
    268       --prefix=/usr                      \
    269       --host=$LFS_TGT32                  \
    270       --build=$(../scripts/config.guess) \
    271       --enable-kernel=&min-kernel;                \
    272       --with-headers=$LFS/usr/include    \
    273       --disable-nscd                     \
    274       --libdir=/usr/lib32                \
    275       --libexecdir=/usr/lib32            \
    276       libc_cv_slibdir=/usr/lib32</userinput></screen>
    277 
    278     <para>Compile the package:</para>
    279 
    280 <screen><userinput remap="make">make</userinput></screen>
    281 
    282     <para>Install the package:</para>
    283 
    284 <screen><userinput remap="install">make DESTDIR=$PWD/DESTDIR install
    285 cp -a DESTDIR/usr/lib32 $LFS/usr/
    286 install -vm644 DESTDIR/usr/include/gnu/{lib-names,stubs}-32.h \
    287                $LFS/usr/include/gnu/
    288 ln -svf ../lib32/ld-linux.so.2 $LFS/lib/ld-linux.so.2</userinput></screen>
    289 
    290 
    291     <caution>
    292       <para>At this point, it is imperative to stop and ensure that the basic
    293       functions (compiling and linking) of the new toolchain are working as
    294       expected. To perform a sanity check, run the following commands:</para>
    295 
    296 <screen><userinput>echo 'int main(){}' &gt; dummy.c
    297 $LFS_TGT-gcc -m32 dummy.c
    298 readelf -l a.out | grep '/ld-linux'</userinput></screen>
    299 
    300       <para>If everything is working correctly, there should be no errors,
    301       and the output of the last command will be of the form:</para>
    302 
    303 <screen><computeroutput>[Requesting program interpreter: /lib/ld-linux.so.2]</computeroutput></screen>
    304 
    305       <para>If the output is not shown as above or there was no output at all,
    306       then something is wrong. Investigate and retrace the steps to find out
    307       where the problem is and correct it. This issue must be resolved before
    308       continuing on.</para>
    309 
    310       <para>Once all is well, clean up the test files:</para>
    311 
    312 <screen><userinput>rm -v dummy.c a.out</userinput></screen>
    313 
    314     </caution>
    315 
    316   </sect2><!-- m32 -->
    317 
    318   <!-- - - - - - - - - - -->
    319   <!-- Multilib - x32bit -->
    320   <!-- - - - - - - - - - -->
    321  
    322   <sect2 arch="ml_x32,ml_all">
    323     <title>Building Glibc - x32bit</title>
    324 
    325     <para>Now recompile for mx32. The extracted source can be
    326     reused but needs to be cleaned before installing the mx32
    327     version of Glibc.</para>
    328 
    329     <para>Clear the build directory and remove artefacts from
    330     previous build:</para>
    331      
    332 <screen><userinput remap="pre">make clean
    333 find .. -name "*.a" -delete</userinput></screen>
    334 
    335     <para>Configure Glibc for mx32 with the following commands:</para>
    336 
    337 <screen><userinput remap="configure">CC="$LFS_TGT-gcc -mx32" \
    338 CXX="$LFS_TGT-g++ -mx32" \
    339 ../configure                             \
    340       --prefix=/usr                      \
    341       --host=$LFS_TGTX32                 \
    342       --build=$(../scripts/config.guess) \
    343       --enable-kernel=&min-kernel;                \
    344       --with-headers=$LFS/usr/include    \
    345       --disable-nscd                     \
    346       --libdir=/usr/libx32               \
    347       --libexecdir=/usr/libx32           \
    348       libc_cv_slibdir=/usr/libx32</userinput></screen>
    349 
    350     <para>Compile the package:</para>
    351 
    352 <screen><userinput remap="make">make</userinput></screen>
    353 
    354     <para>Install the package:</para>
    355 
    356 <screen><userinput remap="install">make DESTDIR=$PWD/DESTDIR install
    357 cp -a DESTDIR/usr/libx32 $LFS/usr/
    358 install -vm644 DESTDIR/usr/include/gnu/{lib-names,stubs}-x32.h \
    359                $LFS/usr/include/gnu/
    360 ln -svf ../libx32/ld-linux-x32.so.2 $LFS/lib/ld-linux-x32.so.2</userinput></screen>
    361 
    362     <caution>
    363       <para>At this point, it is imperative to stop and ensure that the basic
    364       functions (compiling and linking) of the new toolchain are working as
    365       expected. To perform a sanity check, run the following commands:</para>
    366 
    367 <screen><userinput>echo 'int main(){}' &gt; dummy.c
    368 $LFS_TGT-gcc -mx32 dummy.c
    369 readelf -l a.out | grep '/ld-linux-x32'</userinput></screen>
    370 
    371       <para>If everything is working correctly, there should be no errors,
    372       and the output of the last command will be of the form:</para>
    373 
    374 <screen><computeroutput>[Requesting program interpreter: /libx32/ld-linux-x32.so.2]</computeroutput></screen>
    375 
    376       <para>If the output is not shown as above or there was no output at all,
    377       then something is wrong. Investigate and retrace the steps to find out
    378       where the problem is and correct it. This issue must be resolved before
    379       continuing on.</para>
    380 
    381       <para>Once all is well, clean up the test files:</para>
    382 
    383 <screen><userinput>rm -v dummy.c a.out</userinput></screen>
    384 
    385     </caution>
    386 
    387   </sect2><!-- mx32 -->
    388 
    389244  <sect2 role="content">
    390245    <title/>
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