--- /usr/portage/dev-libs/boost/boost-1.55.0-r2.ebuild	2014-11-12 02:01:06.000000000 -0700
+++ boost-1.55.0-r2.ebuild	2014-11-12 11:14:28.604063882 -0700
@@ -223,13 +223,16 @@
 	fi
 
 	if tools_needed; then
-		pushd tools > /dev/null || die
+		local dir
+		for dir in tools tools/auto_index/build; do
+			pushd "$dir" > /dev/null || die
 
-		ejam \
-			${OPTIONS} \
-			${PYTHON_OPTIONS} \
-			|| die "Building of Boost tools failed"
-		popd > /dev/null || die
+			ejam \
+				${OPTIONS} \
+				${PYTHON_OPTIONS} \
+				|| die "Building of Boost $dir failed"
+			popd > /dev/null || die
+		done
 	fi
 }