BUILD ?= build

all: $(BUILD)/rots-util

CFLAGS += -Iinclude
CFLAGS += -Wall -Wundef -Wextra -Wshadow -Wimplicit-function-declaration
CFLAGS += -Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes
CFLAGS += -D_GNU_SOURCE
LIBS = -lcrypto -lssl
CC = gcc
LD = gcc

obj-y += source/file.o
obj-y += source/image.o
obj-y += source/info.o
obj-y += source/main.o
obj-y += source/option.o
obj-y += source/pack.o
obj-y += source/sign.o
obj-y += source/unpack.o
obj-y += source/verify.o
obj-y += source/x509.o

obj = $(addprefix $(BUILD)/, $(obj-y))

# Include the dependencies.
-include $(obj:.o=.d)

# Set up the toolchain.
.SECONDARY:

clean:
	@echo "CLEAN"
	@rm -rf $(BUILD)

# Rule to compile C source code.
$(BUILD)/%.o: %.c
	@echo "CC $<"
	@mkdir -p $(dir $@)
	@$(CC) -c $< -o $@ $(CFLAGS) -MT $@ -MMD -MP -MF $(@:.o=.d)

$(BUILD)/rots-util: $(obj) $(LDSCRIPT)
	@echo "LD $@"
	@mkdir -p $(dir $@)
	@$(LD) -o $@ $(CFLAGS) $(LDFLAGS) $(obj) $(LIBS)

.PHONY: clean