diff --git a/langs/abscond/Makefile b/langs/abscond/Makefile
index 8084e303..3200bc6d 100644
--- a/langs/abscond/Makefile
+++ b/langs/abscond/Makefile
@@ -35,7 +35,8 @@ runtime.o: $(objs)
 	cat $< | racket -t compile-stdin.rkt -m > $@
 
 clean:
-	rm *.o *.s *.run
+	@$(RM) *.o *.s *.run ||:
+	@echo "$(shell basename $(shell pwd)): cleaned!"
 
 %.test: %.run %.rkt
 	@test "$(shell ./$(<))" = "$(shell racket $(word 2,$^))"
diff --git a/langs/blackmail/Makefile b/langs/blackmail/Makefile
index 8084e303..3200bc6d 100644
--- a/langs/blackmail/Makefile
+++ b/langs/blackmail/Makefile
@@ -35,7 +35,8 @@ runtime.o: $(objs)
 	cat $< | racket -t compile-stdin.rkt -m > $@
 
 clean:
-	rm *.o *.s *.run
+	@$(RM) *.o *.s *.run ||:
+	@echo "$(shell basename $(shell pwd)): cleaned!"
 
 %.test: %.run %.rkt
 	@test "$(shell ./$(<))" = "$(shell racket $(word 2,$^))"
diff --git a/langs/con/Makefile b/langs/con/Makefile
index 8084e303..3200bc6d 100644
--- a/langs/con/Makefile
+++ b/langs/con/Makefile
@@ -35,7 +35,8 @@ runtime.o: $(objs)
 	cat $< | racket -t compile-stdin.rkt -m > $@
 
 clean:
-	rm *.o *.s *.run
+	@$(RM) *.o *.s *.run ||:
+	@echo "$(shell basename $(shell pwd)): cleaned!"
 
 %.test: %.run %.rkt
 	@test "$(shell ./$(<))" = "$(shell racket $(word 2,$^))"
diff --git a/langs/dodger/Makefile b/langs/dodger/Makefile
index 17e67120..4555cee7 100644
--- a/langs/dodger/Makefile
+++ b/langs/dodger/Makefile
@@ -36,7 +36,8 @@ runtime.o: $(objs)
 	cat $< | racket -t compile-stdin.rkt -m > $@
 
 clean:
-	rm *.o *.s *.run
+	@$(RM) *.o *.s *.run ||:
+	@echo "$(shell basename $(shell pwd)): cleaned!"
 
 %.test: %.run %.rkt
 	@test "$(shell ./$(<))" = "$(shell racket $(word 2,$^))"
diff --git a/langs/dupe/Makefile b/langs/dupe/Makefile
index 17e67120..4555cee7 100644
--- a/langs/dupe/Makefile
+++ b/langs/dupe/Makefile
@@ -36,7 +36,8 @@ runtime.o: $(objs)
 	cat $< | racket -t compile-stdin.rkt -m > $@
 
 clean:
-	rm *.o *.s *.run
+	@$(RM) *.o *.s *.run ||:
+	@echo "$(shell basename $(shell pwd)): cleaned!"
 
 %.test: %.run %.rkt
 	@test "$(shell ./$(<))" = "$(shell racket $(word 2,$^))"
diff --git a/langs/evildoer/Makefile b/langs/evildoer/Makefile
index 9055c88f..db6ac44a 100644
--- a/langs/evildoer/Makefile
+++ b/langs/evildoer/Makefile
@@ -37,7 +37,8 @@ runtime.o: $(objs)
 	cat $< | racket -t compile-stdin.rkt -m > $@
 
 clean:
-	rm *.o *.s *.run
+	@$(RM) *.o *.s *.run ||:
+	@echo "$(shell basename $(shell pwd)): cleaned!"
 
 %.test: %.run %.rkt
 	@test "$(shell ./$(<))" = "$(shell racket $(word 2,$^))"
diff --git a/langs/extort/Makefile b/langs/extort/Makefile
index 05d677a9..4c6bde9a 100644
--- a/langs/extort/Makefile
+++ b/langs/extort/Makefile
@@ -37,7 +37,8 @@ runtime.o: $(objs)
 	cat $< | racket -t compile-stdin.rkt -m > $@
 
 clean:
-	rm *.o *.s *.run
+	@$(RM) *.o *.s *.run ||:
+	@echo "$(shell basename $(shell pwd)): cleaned!"
 
 %.test: %.run %.rkt
 	@test "$(shell ./$(<))" = "$(shell racket $(word 2,$^))"
diff --git a/langs/fraud/Makefile b/langs/fraud/Makefile
index 9055c88f..db6ac44a 100644
--- a/langs/fraud/Makefile
+++ b/langs/fraud/Makefile
@@ -37,7 +37,8 @@ runtime.o: $(objs)
 	cat $< | racket -t compile-stdin.rkt -m > $@
 
 clean:
-	rm *.o *.s *.run
+	@$(RM) *.o *.s *.run ||:
+	@echo "$(shell basename $(shell pwd)): cleaned!"
 
 %.test: %.run %.rkt
 	@test "$(shell ./$(<))" = "$(shell racket $(word 2,$^))"
diff --git a/langs/fraud/build-runtime.rkt b/langs/fraud/build-runtime.rkt
index 2302edf5..18431504 100644
--- a/langs/fraud/build-runtime.rkt
+++ b/langs/fraud/build-runtime.rkt
@@ -4,9 +4,10 @@
 (require racket/runtime-path)
 (define-runtime-path here ".")
 
-(system (string-append "make -C '"
-                       (path->string (normalize-path here))
-		       "' runtime.o"))
+(unless (system (string-append "make -C '"
+                               (path->string (normalize-path here))
+                               "' runtime.o"))
+  (error 'build-runtime "could not build runtime"))
 
 (define runtime-path
   (normalize-path (build-path here "runtime.o")))
diff --git a/langs/fraud/compile.rkt b/langs/fraud/compile.rkt
index edfa7aec..bb9cee39 100644
--- a/langs/fraud/compile.rkt
+++ b/langs/fraud/compile.rkt
@@ -53,9 +53,7 @@
 
 ;; Op0 -> Asm
 (define (compile-prim0 p)
-  (compile-op0 p))
-
-;; Op1 Expr CEnv -> Asm
+  (compile-op0 p));; Op1 Expr CEnv -> Asm
 (define (compile-prim1 p e c)
   (seq (compile-e e c)
        (compile-op1 p)))
@@ -65,9 +63,7 @@
   (seq (compile-e e1 c)
        (Push rax)
        (compile-e e2 (cons #f c))
-       (compile-op2 p)))
-
-;; Expr Expr Expr CEnv -> Asm
+       (compile-op2 p)));; Expr Expr Expr CEnv -> Asm
 (define (compile-if e1 e2 e3 c)
   (let ((l1 (gensym 'if))
         (l2 (gensym 'if)))
@@ -78,9 +74,7 @@
          (Jmp l2)
          (Label l1)
          (compile-e e3 c)
-         (Label l2))))
-
-;; Expr Expr CEnv -> Asm
+         (Label l2))));; Expr Expr CEnv -> Asm
 (define (compile-begin e1 e2 c)
   (seq (compile-e e1 c)
        (compile-e e2 c)))
@@ -100,3 +94,4 @@
      (match (eq? x y)
        [#t 0]
        [#f (+ 8 (lookup x rest))])]))
+
diff --git a/langs/hoax/Makefile b/langs/hoax/Makefile
index 9055c88f..db6ac44a 100644
--- a/langs/hoax/Makefile
+++ b/langs/hoax/Makefile
@@ -37,7 +37,8 @@ runtime.o: $(objs)
 	cat $< | racket -t compile-stdin.rkt -m > $@
 
 clean:
-	rm *.o *.s *.run
+	@$(RM) *.o *.s *.run ||:
+	@echo "$(shell basename $(shell pwd)): cleaned!"
 
 %.test: %.run %.rkt
 	@test "$(shell ./$(<))" = "$(shell racket $(word 2,$^))"
diff --git a/langs/hustle/Makefile b/langs/hustle/Makefile
index 9055c88f..db6ac44a 100644
--- a/langs/hustle/Makefile
+++ b/langs/hustle/Makefile
@@ -37,7 +37,8 @@ runtime.o: $(objs)
 	cat $< | racket -t compile-stdin.rkt -m > $@
 
 clean:
-	rm *.o *.s *.run
+	@$(RM) *.o *.s *.run ||:
+	@echo "$(shell basename $(shell pwd)): cleaned!"
 
 %.test: %.run %.rkt
 	@test "$(shell ./$(<))" = "$(shell racket $(word 2,$^))"
diff --git a/langs/iniquity-gc/Makefile b/langs/iniquity-gc/Makefile
index 19272d02..47b2b108 100644
--- a/langs/iniquity-gc/Makefile
+++ b/langs/iniquity-gc/Makefile
@@ -33,7 +33,8 @@ runtime.o: $(objs)
 	cat $< | racket -t compile-stdin.rkt -m > $@
 
 clean:
-	rm *.o *.s *.run
+	@$(RM) *.o *.s *.run ||:
+	@echo "$(shell basename $(shell pwd)): cleaned!"
 
 %.test: %.run %.rkt
 	@test "$(shell ./$(<))" = "$(shell racket $(word 2,$^))"
diff --git a/langs/iniquity/Makefile b/langs/iniquity/Makefile
index 9055c88f..db6ac44a 100644
--- a/langs/iniquity/Makefile
+++ b/langs/iniquity/Makefile
@@ -37,7 +37,8 @@ runtime.o: $(objs)
 	cat $< | racket -t compile-stdin.rkt -m > $@
 
 clean:
-	rm *.o *.s *.run
+	@$(RM) *.o *.s *.run ||:
+	@echo "$(shell basename $(shell pwd)): cleaned!"
 
 %.test: %.run %.rkt
 	@test "$(shell ./$(<))" = "$(shell racket $(word 2,$^))"
diff --git a/langs/jig/Makefile b/langs/jig/Makefile
index 9055c88f..db6ac44a 100644
--- a/langs/jig/Makefile
+++ b/langs/jig/Makefile
@@ -37,7 +37,8 @@ runtime.o: $(objs)
 	cat $< | racket -t compile-stdin.rkt -m > $@
 
 clean:
-	rm *.o *.s *.run
+	@$(RM) *.o *.s *.run ||:
+	@echo "$(shell basename $(shell pwd)): cleaned!"
 
 %.test: %.run %.rkt
 	@test "$(shell ./$(<))" = "$(shell racket $(word 2,$^))"
diff --git a/langs/knock/Makefile b/langs/knock/Makefile
index 9055c88f..db6ac44a 100644
--- a/langs/knock/Makefile
+++ b/langs/knock/Makefile
@@ -37,7 +37,8 @@ runtime.o: $(objs)
 	cat $< | racket -t compile-stdin.rkt -m > $@
 
 clean:
-	rm *.o *.s *.run
+	@$(RM) *.o *.s *.run ||:
+	@echo "$(shell basename $(shell pwd)): cleaned!"
 
 %.test: %.run %.rkt
 	@test "$(shell ./$(<))" = "$(shell racket $(word 2,$^))"
diff --git a/langs/loot/Makefile b/langs/loot/Makefile
index 9055c88f..db6ac44a 100644
--- a/langs/loot/Makefile
+++ b/langs/loot/Makefile
@@ -37,7 +37,8 @@ runtime.o: $(objs)
 	cat $< | racket -t compile-stdin.rkt -m > $@
 
 clean:
-	rm *.o *.s *.run
+	@$(RM) *.o *.s *.run ||:
+	@echo "$(shell basename $(shell pwd)): cleaned!"
 
 %.test: %.run %.rkt
 	@test "$(shell ./$(<))" = "$(shell racket $(word 2,$^))"
diff --git a/langs/modules-in-progress/Makefile b/langs/modules-in-progress/Makefile
index 1bba6a32..bd832496 100644
--- a/langs/modules-in-progress/Makefile
+++ b/langs/modules-in-progress/Makefile
@@ -40,6 +40,7 @@ runtime.o: $(objs)
 	make $@
 
 clean:
-	-rm *.o *.s *.run $(BUILD_DIR)/*.make
+	@$(RM) *.o *.s *.run $(BUILD_DIR)/*.make ||:
+	@echo "$(shell basename $(shell pwd)): cleaned!"
 
 -include $(wildcard $(BUILD_DIR)/*.make)
diff --git a/langs/mountebank/Makefile b/langs/mountebank/Makefile
index 7fb41f2a..ed8a85f4 100644
--- a/langs/mountebank/Makefile
+++ b/langs/mountebank/Makefile
@@ -38,7 +38,8 @@ runtime.o: $(objs)
 	cat $< | racket -t compile-stdin.rkt -m > $@
 
 clean:
-	rm *.o *.s *.run
+	@$(RM) *.o *.s *.run ||:
+	@echo "$(shell basename $(shell pwd)): cleaned!"
 
 %.test: %.run %.rkt
 	@test "$(shell ./$(<))" = "$(shell racket $(word 2,$^))"
diff --git a/langs/mug/Makefile b/langs/mug/Makefile
index 7fb41f2a..ed8a85f4 100644
--- a/langs/mug/Makefile
+++ b/langs/mug/Makefile
@@ -38,7 +38,8 @@ runtime.o: $(objs)
 	cat $< | racket -t compile-stdin.rkt -m > $@
 
 clean:
-	rm *.o *.s *.run
+	@$(RM) *.o *.s *.run ||:
+	@echo "$(shell basename $(shell pwd)): cleaned!"
 
 %.test: %.run %.rkt
 	@test "$(shell ./$(<))" = "$(shell racket $(word 2,$^))"
diff --git a/langs/neerdowell/Makefile b/langs/neerdowell/Makefile
index 7fb41f2a..ed8a85f4 100644
--- a/langs/neerdowell/Makefile
+++ b/langs/neerdowell/Makefile
@@ -38,7 +38,8 @@ runtime.o: $(objs)
 	cat $< | racket -t compile-stdin.rkt -m > $@
 
 clean:
-	rm *.o *.s *.run
+	@$(RM) *.o *.s *.run ||:
+	@echo "$(shell basename $(shell pwd)): cleaned!"
 
 %.test: %.run %.rkt
 	@test "$(shell ./$(<))" = "$(shell racket $(word 2,$^))"
diff --git a/langs/outlaw/Makefile b/langs/outlaw/Makefile
index 48c629c0..26a65a57 100644
--- a/langs/outlaw/Makefile
+++ b/langs/outlaw/Makefile
@@ -78,7 +78,8 @@ stdlib.s: stdlib.rkt
 	cat $< | racket -t compile-stdin.rkt -m > $@
 
 clean:
-	rm *.o *.s *.run outlaw.rkt
+	@$(RM) *.o *.s *.run outlaw.rkt ||:
+	@echo "$(shell basename $(shell pwd)): cleaned!"
 
 outlaw2.s: outlaw.rkt outlaw.run
 	cat outlaw.rkt | ./outlaw.run > outlaw2.s
diff --git a/ziggy/src/build-runtime.rkt b/ziggy/src/build-runtime.rkt
index 8b9b5368..33284803 100644
--- a/ziggy/src/build-runtime.rkt
+++ b/ziggy/src/build-runtime.rkt
@@ -5,9 +5,10 @@
 (require racket/runtime-path)
 (define-runtime-path here ".")
 
-(system (string-append "make -C '"
-                       (path->string (normalize-path here))
-		       "' runtime.o"))
+(unless (system (string-append "make -C '"
+                               (path->string (normalize-path here))
+                               "' runtime.o"))
+  (error 'build-runtime "could not build runtime"))
 
 (define runtime-path
   (normalize-path (build-path here "runtime.o")))