Index: /trunk/tools/bin/prerequisites-deb.sh
===================================================================
--- /trunk/tools/bin/prerequisites-deb.sh	(revision 73502)
+++ /trunk/tools/bin/prerequisites-deb.sh	(revision 73503)
@@ -65,4 +65,10 @@
     libxmu-dev libxcursor-dev libcurl4-openssl-dev libdevmapper-dev \
     libvpx-dev g++-multilib libopus-dev || true
+# 32-bits libs for 64-bit installs.
+case `uname -m` in
+   x86_64|amd64|AMD64)
+       apt-get install -y libc6-dev-i386 lib32gcc1 lib32stdc++6 lib32z1-dev || true
+       ;;
+esac
 # Only install Qt5 on recent distributions
 case "${DEBVER}" in