From 5cb2982e570b81ffd7a0c7957ffcf86866a0bb77 Mon Sep 17 00:00:00 2001
From: Markus Hitter <mah@jump-ing.de>
Date: Sat, 2 Oct 2010 16:10:28 +0200
Subject: [PATCH] Makefile: disallow building if config.h obviously isn't up to
 date.

---
 Makefile | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index a531d37..7e19964 100644
--- a/Makefile
+++ b/Makefile
@@ -78,9 +78,9 @@ OBJ = $(patsubst %.c,%.o,${SOURCES})
 .PHONY: all program clean size
 .PRECIOUS: %.o %.elf
 
-all: $(PROGRAM).hex $(PROGRAM).lst $(PROGRAM).sym size
+all: config.h $(PROGRAM).hex $(PROGRAM).lst $(PROGRAM).sym size
 
-program: $(PROGRAM).hex
+program: config.h $(PROGRAM).hex
 	stty $(PROGBAUD) raw ignbrk hup < $(PROGPORT)
 	@sleep 0.1
 	@stty $(PROGBAUD) raw ignbrk hup < $(PROGPORT)
@@ -96,6 +96,10 @@ size: $(PROGRAM).elf
 	@$(OBJDUMP) -h $^ | perl -ne '/.(data|bss)\s+([0-9a-f]+)/ && do { $$a += eval "0x$$2" }; END { printf "    RAM   : %5d bytes  (%2d%% of %2dkb)    (%2d%% of %2dkb)\n", $$a, $$a * 100 / (1 * 1024), 1, $$a * 100 / (2 * 1024), 2 }'
 	@$(OBJDUMP) -h $^ | perl -ne '/.(eeprom)\s+([0-9a-f]+)/ && do { $$a += eval "0x$$2" }; END { printf "    EEPROM: %5d bytes  (%2d%% of %2dkb)    (%2d%% of %2dkb)\n", $$a, $$a * 100 / (1 * 1024), 1, $$a * 100 / (2 * 1024), 2 }'
 
+config.h: config.h.dist
+	@echo "Please review config.h, as config.h.dist is more recent."
+	@false
+
 %.o: %.c
 	@echo "  CC        $@"
 	@$(CC) -c $(CFLAGS) -Wa,-adhlns=$(<:.c=.al) -o $@ $^