Clean up bootloader makefiles to make them a bit more readable.

[pub/USBasp.git] / Demos / Device / ClassDriver / makefile

diff --git a/Demos/Device/ClassDriver/makefile b/Demos/Device/ClassDriver/makefile
index cfa776a..ad88000 100644 (file)
--- a/Demos/Device/ClassDriver/makefile
+++ b/Demos/Device/ClassDriver/makefile
@@ -15,8 +15,17 @@
 
 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 $(PROJECT) clean all;)
+ifeq ($(OBJDIR),)
+       @$(foreach PROJECT, $(PROJECT_DIRECTORIES), $(MAKE) -C $(PROJECT) clean all;)
+endif
 
 %:
-       @$(foreach PROJECT, $(PROJECT_DIRECTORIES), $(MAKE) -s -C $(PROJECT) $@;)
+       @$(foreach PROJECT, $(PROJECT_DIRECTORIES), $(MAKE) -C $(PROJECT) $@;)