From 801bbca9298a2059f60f34140c22a219435cd0ef Mon Sep 17 00:00:00 2001
From: David Phillips <david@yeah.nah.nz>
Date: Sat, 13 Feb 2021 22:35:13 +1300
Subject: Add dep files to Makefile

Also includes WIP data manager code.
---
 Makefile | 86 ++++++++++++++++++++++++++++++++++++++++++++--------------------
 1 file changed, 60 insertions(+), 26 deletions(-)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index 73d957d..1213f92 100644
--- a/Makefile
+++ b/Makefile
@@ -12,7 +12,6 @@ REAL_ELF = build/altimeter.elf
 
 # options for native (i.e. unit test)
 UNITY_SRC ?= unity/src
-UNITY_O = $(UNITY_SRC)/unity.o
 CFLAGS += -Wall -Wextra -I$(UNITY_SRC)
 LDFLAGS += -lm
 
@@ -30,7 +29,7 @@ AVR_COMMON_LDFLAGS += -Wl,-u,vfprintf -lprintf_flt
 AVR_LDFLAGS += $(AVR_COMMON_LDFLAGS) -mmcu=$(MCU)
 SIM_LDFLAGS += $(AVR_COMMON_LDFLAGS) -mmcu=$(SIM_MCU)
 
-$(shell mkdir -p build/{real,sim,native})
+$(shell mkdir -p build/{real,sim,native{,/$(UNITY_SRC)}})
 
 all: build/altimeter_sim.elf build/altimeter.hex test size
 
@@ -47,24 +46,44 @@ flash: build/altimeter.hex
 	$(AVRDUDE) -F -V -c avr109 -p $(MCU) -P $(PORT) -b 115200 -U flash:w:$<
 
 clean:
-	rm -rf build/ $(UNITY_O)
-
-test: \
-	$(UNITY_O) \
-	build/native/test_runner.o \
-	build/native/test_util.o \
-	build/native/test_test.o \
-	build/native/util.o
+	rm -rf build/
+
+BUILD_DIR = build
+SIM_DIR = $(BUILD_DIR)/sim
+REAL_DIR = $(BUILD_DIR)/real
+NATIVE_DIR = $(BUILD_DIR)/native
+
+TEST_OBJ = \
+	$(NATIVE_DIR)/$(UNITY_SRC)/unity.o \
+	$(NATIVE_DIR)/test_runner.o \
+	$(NATIVE_DIR)/test_util.o \
+	$(NATIVE_DIR)/test_test.o \
+	$(NATIVE_DIR)/util.o
+
+REAL_OBJ = \
+	$(REAL_DIR)/barometer_sim.o \
+	$(REAL_DIR)/display_sim.o \
+	$(REAL_DIR)/altimeter.o \
+	$(REAL_DIR)/util.o \
+	$(REAL_DIR)/data_manager.o
+
+SIM_OBJ = \
+	$(SIM_DIR)/barometer_sim.o \
+	$(SIM_DIR)/display_sim.o \
+	$(SIM_DIR)/altimeter.o \
+	$(SIM_DIR)/util.o \
+	$(SIM_DIR)/data_manager.o
+
+ALL_OBJ = $(TEST_OBJ) $(REAL_OBJ) $(SIM_OBJ)
+ALL_SOURCE = $(ALL_OBJ:.o=.c)
+
+test: $(TEST_OBJ)
 	$(CC) $(LDFLAGS) -Wl,-T,linker_list.lds -o $@ $^
 	./$@
 
 # ELF for real hardware. No mock/sim hardware included (except barometer,
 # haven't written that code yet)
-build/altimeter.elf: \
-	build/real/barometer_sim.o \
-	build/real/display_sim.o \
-	build/real/altimeter.o \
-	build/real/util.o
+$(REAL_ELF): $(REAL_OBJ)
 	$(AVR_CC) $(AVR_LDFLAGS) -o $@ $^
 
 size:
@@ -74,23 +93,38 @@ size:
 # versions of each component will provide a mocked interface. This allows for
 # operation in QEMU (see `emu` recipe) without requring SPI, I²C and
 # peripherals to be emulated. Useful for UI testing and development etc.
-build/altimeter_sim.elf: \
-	build/sim/barometer_sim.o \
-	build/sim/display_sim.o \
-	build/sim/altimeter.o \
-	build/sim/util.o
+build/altimeter_sim.elf: $(SIM_OBJ)
 	$(AVR_CC) $(SIM_LDFLAGS) -o $@ $^
 
-build/sim/%.o: %.c
-	$(AVR_CC) $(SIM_CFLAGS) -c -o $@ $^
+build/sim/%.o: %.c build/sim/%.d
+	$(AVR_CC) $(SIM_CFLAGS) -c -o $@ $<
 
-build/real/%.o: %.c
-	$(AVR_CC) $(AVR_CFLAGS) -c -o $@ $^
+build/real/%.o: %.c build/real/%.d
+	$(AVR_CC) $(AVR_CFLAGS) -c -o $@ $<
 
-build/native/%.o: %.c
-	$(CC) $(CFLAGS) -c -o $@ $^
+build/native/%.o: %.c build/native/%.d
+	$(CC) $(CFLAGS) -c -o $@ $<
 
 build/%.hex: build/%.elf
 	$(OBJCOPY) -O ihex -R .eeprom $< $@
 
+build/sim/%.d: %.c
+	@set -e; rm -f $@; \
+	 $(AVR_CC) $(SIM_CFLAGS) -MM -MG $< > $@.$$$$; \
+	 sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \
+	 rm -f $@.$$$$
+
+build/real/%.d: %.c
+	@set -e; rm -f $@; \
+	 $(AVR_CC) $(AVR_CFLAGS) -MM -MG $< > $@.$$$$; \
+	 sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \
+	 rm -f $@.$$$$
+
+build/native/%.d: %.c
+	@set -e; rm -f $@; \
+	 $(CC) $(CFLAGS) -MM -MG $< > $@.$$$$; \
+	 sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \
+	 rm -f $@.$$$$
+
+include $(ALL_SOURCE:.c=.d)
 .PHONY: all emu gdb flash clean test size
-- 
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