Add dist rule to Makefile

Makefile

@@ -5,10 +5,11 @@ BINPREFIX = $(DESTDIR)${PREFIX}/bin
 
 BUILDDIR := build
 
-BIN := snake-asm
-SRC := $(wildcard *.asm)
-OBJ := ${SRC:%.asm=${BUILDDIR}/%.o}
-DEP := ${OBJ:.o=.d}
+BIN    := snake-asm
+SRC    := $(wildcard *.asm)
+OBJ    := ${SRC:%.asm=${BUILDDIR}/%.o}
+DEP    := ${OBJ:.o=.d}
+BINTAR := ${BIN}.tar.gz
 
 ASFLAGS += -felf64
 
@@ -20,6 +21,11 @@ ${BUILDDIR}/%.o: %.asm
 	@$(AS) -o $@ -M -MF ${@:.o=.d} $<
 	$(AS) -o $@ $(ASFLAGS) $<
 
+${BINTAR}: ${BIN}
+	tar czf $@ $^
+
+dist: ${BINTAR}
+
 install:
 	install -d ${BINPREFIX}
 	install ${BIN} ${BINPREFIX}
@@ -28,8 +34,8 @@ uninstall:
 	$(RM) ${BINPREFIX}/${BIN}
 
 clean:
-	$(RM) ${BIN} ${OBJ} ${DEP}
+	$(RM) ${BIN} ${OBJ} ${DEP} ${BINTAR}
 
 -include ${DEP}
 
-.PHONY: install uninstall clean
+.PHONY: dist install uninstall clean