--- a/build	Mon Jun 15 17:30:56 2015 +0200
+++ b/build	Fri Aug 21 11:57:59 2015 +0200
@@ -7,8 +7,10 @@
 make -C platforms
 
 test -d exim || {
-    echo "exim src directory missing" >&2
-    echo "try: git clone https://github.com/Exim/exim.git" >&2
+    cat >&2 <<__
+$0: exim src directory missing
+    try: git clone https://github.com/Exim/exim.git
+__
     exit 1
 }