Check return value of autoreconf. Thanks to Lauri Nurmi.

autogen.sh

@@ -1,9 +1,14 @@
 #! /bin/sh
-autoreconf --install --symlink --force
-
-
-echo
-echo "------------------------------------------------------"
-echo "Initialized build system. You can now run ./configure "
-echo "------------------------------------------------------"
-echo
+if autoreconf --install --symlink --force; then
+	echo
+	echo "------------------------------------------------------"
+	echo "Initialized build system. You can now run ./configure "
+	echo "------------------------------------------------------"
+	echo
+else
+	echo
+	echo "--------------------------"
+	echo "Running autoreconf failed."
+	echo "--------------------------"
+	echo
+fi