[FE training-materials-updates] Realtime lab: add instructions for 64 bit systems

[Michael Opdenacker]

Repository : git://git.free-electrons.com/training-materials.git

On branch  : master
Link       : http://git.free-electrons.com/training-materials/commit/?id=20c9ef7bda84814efb8f8a68116584ebdc4b7710

>---------------------------------------------------------------

commit 20c9ef7bda84814efb8f8a68116584ebdc4b7710
Author: Michael Opdenacker <michael.opdenacker at free-electrons.com>
Date:   Fri Jun 28 15:34:36 2013 +0200

    Realtime lab: add instructions for 64 bit systems
    
    - Correct me if anything in my explanations is wrong!
    
    Signed-off-by: Michael Opdenacker <michael.opdenacker at free-electrons.com>


>---------------------------------------------------------------

20c9ef7bda84814efb8f8a68116584ebdc4b7710
 labs/sysdev-real-time/sysdev-real-time.tex |    9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/labs/sysdev-real-time/sysdev-real-time.tex b/labs/sysdev-real-time/sysdev-real-time.tex
index a616ecc..d805b01 100644
--- a/labs/sysdev-real-time/sysdev-real-time.tex
+++ b/labs/sysdev-real-time/sysdev-real-time.tex
@@ -15,6 +15,15 @@ POSIX real-time API, and against Xenomai's POSIX skin.
 
 Go to the \code{$HOME/felabs/realtime/rttest} directory.
 
+If you are using a 64 bit installation of Ubuntu, install support for
+executables built with a 32 bit C library:
+
+\begin{verbatim}
+sudo apt-get install ia32-libs
+\end{verbatim}
+
+This will be needed to use the toolchain from Code Sourcery.
+
 Install the \code{netcat} package.
 
 \section{Root filesystem}