151 lines
4.0 KiB
Makefile
151 lines
4.0 KiB
Makefile
.DELETE_ON_ERROR:
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.SUFFIXES:
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# Makefile
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# Written by Leon Krieg <info@madcow.dev>
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# ==============================================================================
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# GENERAL SETTINGS
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# ==============================================================================
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VERBOSE := false
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ARCH := m1284p
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#FREQ := 18432000UL
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FREQ := 8000000UL
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MCU := atmega1284p
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ASP := usbasp
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CC := avr-gcc
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LD := $(CC)
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OBJCOPY := avr-objcopy
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AVD := avrdude
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MKDIR := mkdir -p
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RMR := rm -rf
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GIT := git
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SRCDIR := src
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BINDIR := bin
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TMPDIR := $(BINDIR)/build
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TARGET := $(BINDIR)/core.hex
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ELFFILE := $(BINDIR)/core.elf
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LOGFILE := $(BINDIR)/core.log
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CPPFLAGS := -DF_CPU=$(FREQ) -I$(SRCDIR)
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CFLAGS := -mmcu=$(MCU) -Os -std=c99 -Wall -Wextra -Werror
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OCFLAGS := -j .text -j .data -O ihex
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LDFLAGS := -mmcu=$(MCU) -Wl,-u,vfprintf -lprintf_flt
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LDLIBS := -lm
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# ==============================================================================
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# TARGET FILE LISTS (DERIVED FROM SOURCE TREE)
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# ==============================================================================
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PATHS := $(shell find "$(SRCDIR)" -type d -printf '%P ' 2>/dev/null)
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FILES := $(shell find "$(SRCDIR)" -type f -name "*.c" -printf '%P ' 2>/dev/null)
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TMPDIRS := $(BINDIR) $(TMPDIR) $(PATHS:%=$(TMPDIR)/%)
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OBJECTS := $(FILES:%.c=$(TMPDIR)/%.o)
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DEPENDS := $(FILES:%.c=$(TMPDIR)/%.d)
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# ==============================================================================
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# AUXILIARY TARGETS (AND FUSE SETTINGS)
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# ==============================================================================
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.PHONY: all
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all: flash
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.PHONY: flash
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flash: $(TARGET)
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$(E) "[AVD] Flashing..."
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$(Q) $(AVD) -l $(LOGFILE) \
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-c $(ASP) -p $(ARCH) \
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-U lfuse:w:0xff:m \
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-U hfuse:w:0x91:m \
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-U flash:w:$<
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.PHONY: clean
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clean:
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$(E) "[REM] $(TARGET)"
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$(Q) $(RMR) $(TARGET)
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$(E) "[REM] $(ELFFILE)"
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$(Q) $(RMR) $(ELFFILE)
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$(E) "[REM] $(LOGFILE)"
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$(Q) $(RMR) $(LOGFILE)
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$(E) "[REM] $(TMPDIR)"
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$(Q) $(RMR) $(TMPDIR)
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.PHONY: distclean
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distclean: clean
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$(E) "[REM] $(BINDIR)"
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$(Q) $(RMR) $(BINDIR)
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.PHONY: check
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check:
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$(E) "[CHK] Not implemented."
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$(Q) true
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.PHONY: listen
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listen: opt/tools/serial-listen
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$(E) "[RUN] $<"
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$(Q) ./$<
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.PHONY: webgui
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webgui: opt/webgui/Makefile
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$(E) "[MAK] $<"
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$(Q) $(MAKE) -sC $(<D)
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$(TMPDIRS):
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$(E) "[DIR] $@"
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$(Q) $(MKDIR) $@
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# Initialize optional git submodules if needed
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opt/tools/serial-listen opt/webgui/Makefile:
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$(E) "[GIT] Initializing submodules..."
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$(Q) $(GIT) submodule update --init
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# ==============================================================================
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# PRIMARY BUILD TARGET AND PATTERN RULES
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# ==============================================================================
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# We must expand the prerequisite lists a second time to resolve path variable
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# $(@D). This means folders can be set as explicit dependencies and created in
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# the $TMPDIRS rule. This is better than relying on Make to honor the order of
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# prerequisites for the primary target and we will not have to call mkdir for
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# each build step preemptively.
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.SECONDEXPANSION:
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$(TARGET): $(ELFFILE) | $$(@D)
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$(E) "[HEX] $@"
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$(Q) $(OBJCOPY) $(OCFLAGS) $< $@
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$(ELFFILE): $(OBJECTS) $(DEPENDS) | $$(@D)
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$(E) "[ELF] $@"
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$(Q) $(LD) -o $@ $(LDFLAGS) $(OBJECTS) $(LDLIBS)
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$(TMPDIR)/%.o: $(SRCDIR)/%.c | $$(@D)
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$(E) "[OBJ] $@"
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$(Q) $(CC) -c -o $@ $(CFLAGS) $(CPPFLAGS) $<
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$(TMPDIR)/%.d: $(SRCDIR)/%.c | $$(@D)
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$(E) "[DEP] $@"
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$(Q) $(CC) -c -o $@ $(CFLAGS) $(CPPFLAGS) -MM -MT $(@:.d=.o) $<
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# ==============================================================================
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# MAKE PREPROCESSOR INCLUDES AND CONDITIONALS
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# ==============================================================================
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# Load header dependency rules
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include $(wildcard $(DEPENDS))
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# Sanity check
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ifeq ($(strip $(OBJECTS)),)
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$(error No sources found in '$(SRCDIR)/')
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endif
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# Handle verbosity setting
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ifneq ($(VERBOSE), false)
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E = @true
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else
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E = @echo
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Q = @
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endif
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