X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/316cae29b5a1a4901ad7e8eac1aafac318156649..32f2d59bc0aec1e7c6b88301e3bd7a58ddc0c8c8:/Demos/Host/ClassDriver/makefile

diff --git a/Demos/Host/ClassDriver/makefile b/Demos/Host/ClassDriver/makefile
index f1f72e7e2..25cfedf1a 100644
--- a/Demos/Host/ClassDriver/makefile
+++ b/Demos/Host/ClassDriver/makefile
@@ -15,8 +15,15 @@
 
 PROJECT_DIRECTORIES = $(shell ls -d *)
 
+# This makefile is potentially infinitely recursive if something really bad
+# happens when determining the set of project directories - hard-abort if
+# more than 10 levels deep to avoid angry emails.
+ifeq ($(MAKELEVEL), 10)
+   $(error EMERGENCY ABORT: INFINITE RECURSION DETECTED)
+endif
+
 all:
-	$(foreach PROJECT, $(PROJECT_DIRECTORIES), $(MAKE) -s -C $(PROJECT) clean all;)
+	@$(foreach PROJECT, $(PROJECT_DIRECTORIES), $(MAKE) -s -C $(PROJECT) clean all;)
 
 %:
-	$(foreach PROJECT, $(PROJECT_DIRECTORIES), $(MAKE) -s -C $(PROJECT) $@;)
+	@$(foreach PROJECT, $(PROJECT_DIRECTORIES), $(MAKE) -s -C $(PROJECT) $@;)