fixed powerpc test

misspelled CFLAGS

circle.yml

@@ -8,7 +8,7 @@ dependencies:
 test:
   override:
     - ? |
-        if [[ "$CIRCLE_NODE_INDEX" == "0" ]]                                    ; then cc -v; make all   && make clean; fi &&
+        if [[ "$CIRCLE_NODE_INDEX" == "0" ]]                                    ; then cc -v; CFLAGS="-O0 -Werror" make all && make clean; fi &&
         if [[ "$CIRCLE_NODE_TOTAL" < "2" ]] || [[ "$CIRCLE_NODE_INDEX" == "1" ]]; then make gnu90build   && make clean; fi
       :
         parallel: true