汎用的なmakefile

Makefile

CC         = $(CROSS_COMPILE)gcc
STRIP      = $(CROSS_COMPILE)strip
CFLAGS     = -MMD -MP -Wall -Wextra -Winit-self -Wno-missing-field-initializers
INCLUDES   = -I$(DEVROOT)/include
LDFLAGS    = -L$(DEVROOT)/lib
LIBS       =
SRCS       = $(foreach srcdir, $(shell find ./src -type d), $(wildcard $(srcdir)/*.c))
OBJS       = $(subst ./src/, ./obj/, $(SRCS:.c=.o))
DEPS       = $(OBJS:.o=.d)
TARGETS    = program_name
GIT_HASH   = $(shell git rev-parse HEAD)
BUILD_TYPE = Debug

ifeq ($(BUILD_TYPE), Release)
	CFLAGS += -O3 -s -DBUILD_TYPE=\"Release\"
endif
ifeq ($(BUILD_TYPE), Debug)
	CFLAGS += -O0 -g -DBUILD_TYPE=\"Debug\"
endif

all: $(TARGETS)

$(TARGETS): $(OBJS) $(LIBS)
	@echo $(BUILD_TYPE) build
	$(CC) $(LDFAGS) -o $@ $^ $(LDFLAGS)
	$(STRIP) $@

./obj/%.o: ./src/%.c
	-mkdir -p $(dir $(OBJS))
	$(CC) $(CFLAGS) -DGIT_HASH=\"$(GIT_HASH)\" $(INCLUDES) -o $@ -c $<

rebuild: clean all

clean:
	$(RM) $(OBJS) $(DEPS) $(TARGETS)

docs:
	doxygen Doxyfile

debug:
	$(MAKE) rebuild BUILD_TYPE=Debug

release:
	$(MAKE) rebuild BUILD_TYPE=Release

install:
	install -m 0755 -D $(TARGETS) $(ROOTFS)/usr/local/bin/

-include $(DEPS)

.PHONY: all clean test doc debug release install