From 8652d6c517d18422a4e02fdc125c7b13787af709 Mon Sep 17 00:00:00 2001
From: Marti Bolivar <mbolivar@leaflabs.com>
Date: Thu, 7 Jun 2012 01:18:01 -0400
Subject: Makefile: add list-boards target.

As the number of boards increases, it's less practical to keep a list
of them in the help target output (notice also that some have been
forgotten). This target can't get out of date unless we change how the
board-includes/ directory works.

Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
---
 Makefile                      | 7 ++++++-
 support/make/target-config.mk | 2 +-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 56a8f50..313cf94 100644
--- a/Makefile
+++ b/Makefile
@@ -19,6 +19,7 @@ SUPPORT_PATH := $(SRCROOT)/support
 LDDIR := $(SUPPORT_PATH)/ld
 # Support files for this Makefile
 MAKEDIR := $(SUPPORT_PATH)/make
+BOARD_INCLUDE_DIR := $(MAKEDIR)/board-includes
 
 ##
 ## Target-specific configuration.  This determines some compiler and
@@ -92,7 +93,7 @@ $(foreach m,$(LIBMAPLE_MODULES),$(eval $(call LIBMAPLE_MODULE_template,$(m))))
 # main target
 include $(SRCROOT)/build-targets.mk
 
-.PHONY: install sketch clean help debug cscope tags ctags ram flash jtag doxygen mrproper
+.PHONY: install sketch clean help debug cscope tags ctags ram flash jtag doxygen mrproper list-boards
 
 # Target upload commands
 # USB ID for DFU upload -- FIXME: do something smarter with this
@@ -182,3 +183,7 @@ jtag:
 
 doxygen:
 	doxygen $(SUPPORT_PATH)/doxygen/Doxyfile
+
+# This output is kind of ugly, but I don't understand make very well.
+list-boards:
+	@echo " $(addsuffix "\\n",$(basename $(notdir $(wildcard $(BOARD_INCLUDE_DIR)/*.mk))))"
diff --git a/support/make/target-config.mk b/support/make/target-config.mk
index e13504d..a04ca38 100644
--- a/support/make/target-config.mk
+++ b/support/make/target-config.mk
@@ -5,7 +5,7 @@ TARGET_FLAGS :=
 # Board-specific configuration values. Punt these to board-specific
 # include files.
 
-include $(MAKEDIR)/board-includes/$(BOARD).mk
+include $(BOARD_INCLUDE_DIR)/$(BOARD).mk
 
 TARGET_FLAGS += -DBOARD_$(BOARD) -DMCU_$(MCU) \
                 -DERROR_LED_PORT=$(ERROR_LED_PORT) \
-- 
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