Minor documentation improvements.

[pub/USBasp.git] / Projects / makefile

diff --git a/Projects/makefile b/Projects/makefile
index 50851a3..dd0ea2e 100644 (file)
--- a/Projects/makefile
+++ b/Projects/makefile
@@ -1,9 +1,9 @@
 #
 #             LUFA Library
 #
 #             LUFA Library

-#     Copyright (C) Dean Camera, 2009.
-#              
+#     Copyright (C) Dean Camera, 2012.
+#

 #  dean [at] fourwalledcubicle [dot] com
 #  dean [at] fourwalledcubicle [dot] com

-#      www.fourwalledcubicle.com
+#           www.lufa-lib.org

 #
 
 # Makefile to build all the LUFA Projects. Call with "make all" to
 #
 
 # Makefile to build all the LUFA Projects. Call with "make all" to


@@ -13,13 +13,35 @@
 # custom LUFA library build options are reflected in the compiled
 # code.
 
 # custom LUFA library build options are reflected in the compiled
 # code.
 

-all:
-       make -C Magstripe clean
-       make -C Magstripe all
-       
-       make -C AVRISP_Programmer clean
-       make -C AVRISP_Programmer all
+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)
+   $(error EMERGENCY ABORT: INFINITE RECURSION DETECTED)
+endif
+
+# Need to special-case building without a per-project object directory
+ifeq ($(OBJDIR),)
+   # If no target specified, force "clean all" and disallow parallel build   
+   ifeq ($(MAKECMDGOALS),)
+      MAKECMDGOALS := clean all
+      .NOTPARALLEL:
+   endif
+
+   # If one of the targets is to build, force "clean" beforehand and disallow parallel build   
+   ifneq ($(findstring all, $(MAKECMDGOALS)),)
+      MAKECMDGOALS := clean $(MAKECMDGOALS)
+      .NOTPARALLEL:
+   endif
+endif
+
+%: $(PROJECT_DIRECTORIES)
+       @echo . > /dev/null
+
+$(PROJECT_DIRECTORIES):
+       @$(MAKE) -C $@ $(MAKECMDGOALS)
+    
+.PHONY: $(PROJECT_DIRECTORIES)

 
 

-%:
-       make -C Magstripe $@
-       make -C AVRISP_Programmer $@