export LIBGUESTFS_PATH="$b/appliance"
export PERL5LIB="$b/perl/blib/lib:$b/perl/blib/arch"
+# Do we have libtool? If we have it then we can use it to make
+# running valgrind simpler. However don't depend on it.
+if libtool --help >/dev/null 2>&1; then
+ libtool="libtool --mode=execute"
+fi
+
# Run the program.
-libtool --mode=execute "$@"
+exec $libtool "$@"