contents/using-lttng/instrumenting/advanced-techniques/32-bit-on-64-bit/building-32-bit-lttng-ust.md

   1 ---
   2 id: building-32-bit-lttng-ust
   3 ---
   4
   5 Follow this:
   6
   7 <pre class="term">
   8 git clone http://git.lttng.org/lttng-ust.git
   9 cd lttng-ust
  10 ./bootstrap
  11 ./configure --prefix=/usr \
  12             --libdir=/usr/lib32 \
  13             CFLAGS=-m32 CXXFLAGS=-m32 \
  14             LDFLAGS=-L/usr/lib32
  15 make
  16 sudo make install
  17 sudo ldconfig
  18 </pre>
  19
  20 `-L/usr/lib32` is required for the build to find the 32-bit versions
  21 of Userspace RCU and other dependencies.
  22
  23 <div class="tip">
  24 <p>
  25     <span class="t">Note:</span>Depending on your Linux distribution,
  26     32-bit libraries could be installed at a different location than
  27     <code>/usr/lib32</code>. For example, Debian is known to install
  28     some 32-bit libraries in <code>/usr/lib/i386-linux-gnu</code>.
  29 </p>
  30 <p>
  31     In this case, make sure to set <code>LDFLAGS</code> to all the
  32     relevant 32-bit library paths, for example,
  33     <code>LDFLAGS="-L/usr/lib32 -L/usr/lib/i386-linux-gnu"</code>.
  34 </p>
  35 </div>
  36
  37 <div class="tip">
  38 <p>
  39     <span class="t">Note:</span>You may add options to
  40     <code>./configure</code> if you need them (for
  41     Java and SystemTap support, for example). Look at
  42     <code>./configure --help</code> for more information.
  43 </p>
  44 </div>