diff --git a/.gitignore b/.gitignore
index eaeabd1..d06ca98 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,12 +1,7 @@
-*.o
-*.d
+build/
+bin/
 
 # `make -f Makefile.js` artifacts
 .emscripten_cache
 js/*
 !js/lib.js
-
-# `make -f Makefile` artifacts
-build_filelist
-splitimg
-temu
diff --git a/Makefile b/Makefile
index 390ae37..d7cb8d9 100644
--- a/Makefile
+++ b/Makefile
@@ -22,6 +22,10 @@
 # THE SOFTWARE.
 #
 
+# artifact paths
+BUILD:=build
+BIN:=bin
+
 # if set, network filesystem is enabled. libcurl and libcrypto
 # (openssl) must be installed.
 CONFIG_FS_NET=y
@@ -103,33 +107,48 @@ CFLAGS+=-DCONFIG_X86EMU
 EMU_OBJS+=x86_cpu.o x86_machine.o ide.o ps2.o vmmouse.o pckbd.o vga.o
 endif
 
-temu$(EXE): $(EMU_OBJS)
-	$(CC) $(LDFLAGS) -o $@ $^ $(EMU_LIBS)
+# macro to prepend $(BUILD)
+define mkbuild
+$(addprefix $(BUILD)/,$(1))
+endef
+
+temu$(EXE): $(BUILD) $(BIN) $(EMU_OBJS)
+	$(CC) $(LDFLAGS) -o $(BIN)/$@ $(call mkbuild,$(EMU_OBJS)) $(EMU_LIBS)
 
 riscv_cpu32.o: riscv_cpu.c
-	$(CC) $(CFLAGS) -DMAX_XLEN=32 -c -o $@ $<
+	$(CC) $(CFLAGS) -DMAX_XLEN=32 -c -o $(BUILD)/$@ $<
 
 riscv_cpu64.o: riscv_cpu.c
-	$(CC) $(CFLAGS) -DMAX_XLEN=64 -c -o $@ $<
+	$(CC) $(CFLAGS) -DMAX_XLEN=64 -c -o $(BUILD)/$@ $<
 
 riscv_cpu128.o: riscv_cpu.c
-	$(CC) $(CFLAGS) -DMAX_XLEN=128 -c -o $@ $<
+	$(CC) $(CFLAGS) -DMAX_XLEN=128 -c -o $(BUILD)/$@ $<
 
 build_filelist: build_filelist.o fs_utils.o cutils.o
-	$(CC) $(LDFLAGS) -o $@ $^ -lm
+	$(CC) $(LDFLAGS) -o $(BIN)/$@ $(call mkbuild,$^) -lm
 
 splitimg: splitimg.o
-	$(CC) $(LDFLAGS) -o $@ $^
+	$(CC) $(LDFLAGS) -o $(BIN)/$@ $(call mkbuild,$^)
 
 install: $(PROGS)
 	$(STRIP) $(PROGS)
 	$(INSTALL) -m755 $(PROGS) "$(DESTDIR)$(bindir)"
 
 %.o: %.c
-	$(CC) $(CFLAGS) -c -o $@ $<
+	$(CC) $(CFLAGS) -c -o $(BUILD)/$@ $<
 
+.PHONY: $(BUILD)
+$(BUILD):
+	@mkdir -p $(BUILD) $(BUILD)/slirp
+
+.PHONY: $(BIN)
+$(BIN):
+	@mkdir -p $@
+
+.PHONY: clean
 clean:
-	rm -f *.o *.d *~ $(PROGS) slirp/*.o slirp/*.d slirp/*~
+	rm -f *~ $(PROGS)
+	rm -rf $(BUILD)
 
--include $(wildcard *.d)
--include $(wildcard slirp/*.d)
+-include $(wildcard $(BUILD)/*.d)
+-include $(wildcard $(BUILD)/slirp/*.d)