Split framebuffer functions into library

src/libmittos/Makefile

@@ -0,0 +1,46 @@
+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 $@
+
+# Automatic dependency tracking
+DEP := $(OBJ:.o=.d)
+DEPFLAGS = -MT $@ -MMD -MP -MF $*.d
+$(OBJ): CPPFLAGS += $(DEPFLAGS)
+%.d: ;
+
+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
+# Include automatic dependency rules
+include $(DEP)