move pack_file to tool

Makefile

@@ -82,8 +82,8 @@ all: main
 	$(CXX) $(ARCH) $(CXXSTD) $(CFLAGS) $(OPT) $(DEBUG) -c $< -o $@
 
 PACK_FILENAMES = $(shell cat filenames.txt)
-test.pack: pack_main $(PACK_FILENAMES)
-	./pack_main $@ $(PACK_FILENAMES)
+test.pack: tool/pack_file $(PACK_FILENAMES)
+	./tool/pack_file $@ $(PACK_FILENAMES)
 
 test.pack.o: test.pack
 	$(OBJCOPY) -I binary -O $(OBJARCH) $< $@

tool/Makefile

@@ -1,5 +1,9 @@
 OPT = -O2
 CFLAGS = -I../../opus-dist/include
+CFLAGS = -I../include
 
 opus_encode: opus_encode.c ../../opus-dist/lib/libopus.a
 	gcc -o $@ $(OPT) $(CFLAGS) -lm $^
+
+pack_file: pack_file.cpp
+	g++ -o $@ $(OPT) $(CFLAGS) $^