Restructure and refactor makefiles

- Allow rebuilds without rebuilding everything
 By detecting changes everywhere that matters (flags, objects and headers).
- Add progress bar
- Fully clean everything when clean goal is used

Makefile

@@ -14,6 +14,7 @@ include ./Versions.inc
 
 TARGET := hekate
 BUILDDIR := build
+BUILDTDIR := build/$(TARGET)
 OUTPUTDIR := output
 SOURCEDIR = bootloader
 BDKDIR := bdk
@@ -21,42 +22,33 @@ BDKINC := -I./$(BDKDIR)
 VPATH = $(dir ./$(SOURCEDIR)/) $(dir $(wildcard ./$(SOURCEDIR)/*/)) $(dir $(wildcard ./$(SOURCEDIR)/*/*/))
 VPATH += $(dir $(wildcard ./$(BDKDIR)/)) $(dir $(wildcard ./$(BDKDIR)/*/)) $(dir $(wildcard ./$(BDKDIR)/*/*/))
 
+# Track compiler flags
+TRACK_CFLAGS = $(BUILDTDIR)/.cflags
+TRACK_LDFLAGS = $(BUILDTDIR)/.ldflags
+
 # Main and graphics.
-OBJS = $(addprefix $(BUILDDIR)/$(TARGET)/, \
-	start.o exception_handlers.o \
-	main.o heap.o \
-	gfx.o logos.o tui.o \
-	l4t.o fe_info.o fe_tools.o \
-)
+OBJS =  start exception_handlers main heap gfx logos tui fe_info fe_tools
 
 # Hardware.
-OBJS += $(addprefix $(BUILDDIR)/$(TARGET)/, \
-	bpmp.o ccplex.o clock.o di.o i2c.o irq.o timer.o \
-	mc.o sdram.o minerva.o \
-	gpio.o pinmux.o pmc.o se.o smmu.o tsec.o uart.o \
-	fuse.o kfuse.o \
-	sdmmc.o sdmmc_driver.o emmc.o sd.o emummc.o \
-	bq24193.o max17050.o max7762x.o max77620-rtc.o \
-	hw_init.o \
-)
+OBJS += bpmp ccplex clock di i2c irq timer \
+		mc sdram minerva smmu \
+		gpio pinmux pmc se tsec uart \
+		fuse kfuse \
+		sdmmc sdmmc_driver emmc sd emummc \
+		bq24193 max17050 max7762x max77620-rtc \
+		hw_init
 
 # Utilities.
-OBJS += $(addprefix $(BUILDDIR)/$(TARGET)/, \
-	btn.o dirlist.o ianos.o util.o \
-	config.o ini.o \
-)
+OBJS += btn dirlist ianos ini util config
 
-# Horizon.
-OBJS += $(addprefix $(BUILDDIR)/$(TARGET)/, \
-	hos.o hos_config.o pkg1.o pkg2.o pkg3.o pkg2_ini_kippatch.o secmon_exo.o \
-)
+# OS loaders.
+OBJS += l4t hos hos_config pkg1 pkg2 pkg3 pkg2_ini_kippatch secmon_exo
 
 # Libraries.
-OBJS += $(addprefix $(BUILDDIR)/$(TARGET)/, \
-	lz.o lz4.o blz.o \
-	diskio.o ff.o ffunicode.o ffsystem.o \
-	elfload.o elfreloc_arm.o \
-)
+OBJS += lz lz4 blz diskio ff ffunicode ffsystem elfload elfreloc_arm
+
+OBJS := $(addsuffix .o, $(OBJS))
+OBJS := $(addprefix $(BUILDTDIR)/, $(OBJS))
 
 GFX_INC   := '"../$(SOURCEDIR)/gfx/gfx.h"'
 FFCFG_INC := '"../$(SOURCEDIR)/libs/fatfs/ffconf.h"'
@@ -94,9 +86,17 @@ TOOLSLZ := $(wildcard tools/lz)
 TOOLSB2C := $(wildcard tools/bin2c)
 TOOLS := $(TOOLSLZ) $(TOOLSB2C)
 
+ifndef IPLECHO
+T := $(shell $(MAKE) $(BUILDTDIR)/$(TARGET).elf --no-print-directory -nrRf $(firstword $(MAKEFILE_LIST)) IPLECHO="IPLOBJ" | grep -c "IPLOBJ")
+
+N := x
+C = $(words $N)$(eval N := x $N)
+IPLECHO = echo -ne "\r`expr "  [\`expr $C '*' 100 / $T\`" : '.*\(....\)$$'`%]\033[K"
+endif
+
 ################################################################################
 
-.PHONY: all clean $(MODULEDIRS) $(NYXDIR) $(LDRDIR) $(TOOLS)
+.PHONY: all clean $(LDRDIR) $(TOOLS) $(NYXDIR) $(MODULEDIRS)
 
 all: $(TARGET).bin $(LDRDIR)
 	@printf ICTC49 >> $(OUTPUTDIR)/$(TARGET).bin
@@ -113,17 +113,18 @@ all: $(TARGET).bin $(LDRDIR)
 	@echo "--------------------------------------"
 
 clean: $(TOOLS)
-	@rm -rf $(OBJS)
 	@rm -rf $(BUILDDIR)
 	@rm -rf $(OUTPUTDIR)
+	@$(MAKE) --no-print-directory -C $(LDRDIR) $(MAKECMDGOALS) -$(MAKEFLAGS)
 
-$(MODULEDIRS):
+$(MODULEDIRS): $(BUILDTDIR)/$(TARGET).elf
 	@$(MAKE) --no-print-directory -C $@ $(MAKECMDGOALS) -$(MAKEFLAGS)
 
-$(NYXDIR):
+$(NYXDIR): $(BUILDTDIR)/$(TARGET).elf $(MODULEDIRS)
+	@echo --------------------------------------
 	@$(MAKE) --no-print-directory -C $@ $(MAKECMDGOALS) -$(MAKEFLAGS)
 
-$(LDRDIR): $(TARGET).bin
+$(LDRDIR): $(TARGET).bin $(TOOLS) $(NYXDIR) $(MODULEDIRS)
 	@$(TOOLSLZ)/lz77 $(OUTPUTDIR)/$(TARGET).bin
 	@mv $(OUTPUTDIR)/$(TARGET).bin $(OUTPUTDIR)/$(TARGET)_unc.bin
 	@mv $(OUTPUTDIR)/$(TARGET).bin.00.lz payload_00
@@ -137,24 +138,31 @@ $(LDRDIR): $(TARGET).bin
 $(TOOLS):
 	@$(MAKE) --no-print-directory -C $@ $(MAKECMDGOALS) -$(MAKEFLAGS)
 
-$(TARGET).bin: $(BUILDDIR)/$(TARGET)/$(TARGET).elf $(MODULEDIRS) $(NYXDIR) $(TOOLS)
+$(TARGET).bin: $(BUILDTDIR)/$(TARGET).elf
 	@$(OBJCOPY) -S -O binary $< $(OUTPUTDIR)/$@
+	@echo --------------------------------------
 
-$(BUILDDIR)/$(TARGET)/$(TARGET).elf: $(OBJS)
-	@$(CC) $(LDFLAGS) -T $(SOURCEDIR)/link.ld $^ -o $@
-	@printf "$(TARGET) was built with the following flags:\nCFLAGS:  $(CFLAGS)\nLDFLAGS: $(LDFLAGS)\n"
+$(BUILDTDIR)/$(TARGET).elf: $(OBJS) $(TRACK_LDFLAGS)
+	@echo -ne "\r[100%] Linking $(TARGET).elf\033[K"
+	@$(CC) $(LDFLAGS) -T $(SOURCEDIR)/link.ld $(OBJS) -o $@
+	@printf "\n$(TARGET) was built with the following flags:\nCFLAGS:  $(CFLAGS)\nLDFLAGS: $(LDFLAGS)\n"
 
-$(BUILDDIR)/$(TARGET)/%.o: %.c
-	@echo Building $@
-	@$(CC) $(CFLAGS) $(BDKINC) -c $< -o $@
+$(BUILDTDIR)/%.o: %.c $(TRACK_CFLAGS) | $(BUILDTDIR)
+	@$(IPLECHO) Building $@
+	@$(CC) $(CFLAGS) $(BDKINC) -MMD -MP -c $< -o $@
 
-$(BUILDDIR)/$(TARGET)/%.o: %.S
-	@echo Building $@
-	@$(CC) $(CFLAGS) -c $< -o $@
+$(BUILDTDIR)/%.o: %.S $(TRACK_CFLAGS) | $(BUILDTDIR)
+	@$(IPLECHO) Building $@
+	@$(CC) $(CFLAGS) -MMD -MP -c $< -o $@
 
-$(OBJS): $(BUILDDIR)/$(TARGET)
-
-$(BUILDDIR)/$(TARGET):
+$(BUILDTDIR):
 	@mkdir -p "$(BUILDDIR)"
-	@mkdir -p "$(BUILDDIR)/$(TARGET)"
+	@mkdir -p "$(BUILDTDIR)"
 	@mkdir -p "$(OUTPUTDIR)"
+
+# Non objects change detectors.
+$(TRACK_CFLAGS): $(BUILDTDIR)
+	@echo '$(CFLAGS)' | cmp -s - $@ || echo '$(CFLAGS)' > $@
+$(TRACK_LDFLAGS): $(BUILDTDIR)
+	@echo '$(LDFLAGS)' | cmp -s - $@ || echo '$(LDFLAGS)' > $@
+-include $(OBJS:.o=.d)