X-Git-Url: http://git.linex4red.de/pub/lufa.git/blobdiff_plain/8f8f3478917401f3d286dafd73902e9d80b527d2..refs/heads/ProMicro:/Projects/makefile

diff --git a/Projects/makefile b/Projects/makefile
index 50ce7ad6d..906ba2349 100644
--- a/Projects/makefile
+++ b/Projects/makefile
@@ -1,6 +1,6 @@
 #
 #             LUFA Library
-#     Copyright (C) Dean Camera, 2012.
+#     Copyright (C) Dean Camera, 2021.
 #
 #  dean [at] fourwalledcubicle [dot] com
 #           www.lufa-lib.org
@@ -13,10 +13,24 @@
 # custom LUFA library build options are reflected in the compiled
 # code.
 
-PROJECT_DIRECTORIES = $(shell ls -d *)
+PROJECT_DIRECTORIES := $(shell ls -d */)
 
-all:
-	@$(foreach PROJECT, $(PROJECT_DIRECTORIES), $(MAKE) -s -C $(PROJECT) clean all;)
+# This makefile is potentially infinitely recursive if something really bad
+# happens when determining the set of project directories - hard-abort if
+# more than 10 levels deep to avoid angry emails.
+ifeq ($(MAKELEVEL), 10)
+   $(error EMERGENCY ABORT: INFINITE RECURSION DETECTED)
+endif
+
+# Build each directory sequentially, even if we are building using multiple
+# cores within each project
+.NOTPARALLEL:
+
+%: $(PROJECT_DIRECTORIES)
+	@echo . > /dev/null
+
+$(PROJECT_DIRECTORIES):
+	@$(MAKE) -C $@ $(MAKECMDGOALS)
+
+.PHONY: $(PROJECT_DIRECTORIES)
 
-%:
-	@$(foreach PROJECT, $(PROJECT_DIRECTORIES), $(MAKE) -s -C $(PROJECT) $@;)