v4.0.1-rc7 - reimplement some functions

Makefile

@@ -16,9 +16,10 @@ test:
 	cp etc/example.cfg ./glacier.cfg
 
 lib:
-	mkdir lib
-	$(CC) libglacier.c -c $(LIBFLAGS) -o lib/libglacier.o
-	$(AR) -rc lib/libglacier.a lib/libglacier.o
+	mkdir build
+	mkdir build/lib
+	$(CC) libglacier.c -c $(LIBFLAGS) -o build/lib/libglacier.o
+	$(AR) -rc build/lib/libglacier.a build/lib/libglacier.o
 
 install:
 	install lib/libglacier.a $(PREFIX)/lib
@@ -28,4 +29,4 @@ install:
 	install include/glacier_runtime.h $(PREFIX)/include
 
 clean:
-	rm libglacier.test libglacier.a glacier.cfg
+	rm -rf build