The joke's on me.  You need --quiet *and* --no-print-directory.

But it depends on how make is called, in ways I don't totally understand.

Change-Id: I550c4ee864152b290622429dabf7e46e11b24799
diff --git a/configure b/configure
index 6b01523..9f49423 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #!/bin/sh
 set -e
-AUTOTOOLS_DIRS="$(make --quiet show-AUTOTOOLS_DIRS)"
+AUTOTOOLS_DIRS="$(make --quiet --no-print-directory show-AUTOTOOLS_DIRS)"
 
 for i in $AUTOTOOLS_DIRS; do
   echo Running ./configure in $i