1 files changed, 17 insertions, 0 deletions
diff --git a/src/scripts/lookups-Makefile b/src/scripts/lookups-Makefile
index e7aeaa08a..51fbd944b 100755
--- a/src/scripts/lookups-Makefile
+++ b/src/scripts/lookups-Makefile
@@ -76,6 +76,15 @@ want_at_all() {
   grep -q "^[ $tab]*$re" "$defs_source"
 }
 
+# Adapted want_at_all above to work for EXPERIMENTAL features
+want_experimental() {
+  local want_name="$1"
+  local re="EXPERIMENTAL_${want_name}[ $tab]*=[ $tab]*."
+  env | grep -q "^$re"
+  if [ $? -eq 0 ]; then return 0; fi
+  grep -q "^[ $tab]*$re" "$defs_source"
+}
+
 # The values of these variables will be emitted into the Makefile.
 
 MODS=""
@@ -139,6 +148,14 @@ fi
 
 OBJ="${OBJ} spf.o"
 
+# Because the variable is EXPERIMENTAL_REDIS and not LOOKUP_REDIS we
+# use a different function to check for EXPERIMENTAL_* features
+# requested. Don't use the SPF method with dummy functions above.
+if want_experimental REDIS
+then
+  OBJ="${OBJ} redis.o"
+fi
+
 echo "MODS = $MODS"
 echo "OBJ = $OBJ"