ifeq ($(BUILDROOT),)
$(error BUILDROOT IS NOT SET!)
endif

CC := ${TARGET}-gcc

SRC := $(shell find -type f -name '*.[cS]*')
OBJ := $(patsubst %, %.o, $(basename $(basename $(SRC))))
HDR := $(shell find -type f -name '*.h')

CFLAGS := -Wall -Wextra -pedantic -ffreestanding -mcmodel=large -std=c2x
CFLAGS += -ggdb -O0
ASFLAGS += -ggdb
CPPFLAGS += -nostdinc -I include -I /opt/sysroot/usr/include
LDFLAGS := -nostdlib -r

libmittos.a: $(OBJ)
	$(LINK.o) $^ $(LOADLIBES) $(LDLIBS) -o $@

graphics/graphics.o: graphics/u_vga16.termfont.inc
graphics/u_vga16.termfont.inc:
	${BUILDROOT}/toolchain/build-uni_vga.sh

# Automatic dependency tracking
DEP := $(OBJ:.o=.d)
DEPFLAGS = -MT $@ -MMD -MP -MF $*.d
$(OBJ): CPPFLAGS += $(DEPFLAGS)
%.d: ;


# Installation
DESTDIR ?= $(BUILDROOT)/sysroot
LIBDIR := $(DESTDIR)/usr/lib
INCDIR := $(DESTDIR)/usr/include/mittos

$(LIBDIR)/libmittos.a: libmittos.a
	install -D $<  $@

$(INCDIR)/%: include/%
	mkdir -p $(INCDIR)
	install -D $< $@

install: install-headers $(LIBDIR)/libmittos.a

install-headers: $(HDR:./include/%=$(INCDIR)/%)


clean:
	rm -rf $(OBJ) $(DEP) libmittos.a

.PHONY: install install-headers clean

# Include automatic dependency rules
include $(DEP)