New commandline args are clearer, and prepare for compression.

utility/Makefile

Index: utility/Makefile
diff --git a/utility/Makefile b/utility/Makefile
index 8d370094ce603662869cfda1c5a434b6595330db..6d420f474a01ab8ff84ad31fdd578732f3c0fee6 100644
--- a/utility/Makefile
+++ b/utility/Makefile
@@ -59,8 +59,14 @@ ${BUILD_ROOT}/dump_kernel_config: dump_kernel_config.c $(LIBS)
 ${BUILD_ROOT}/gbb_utility: gbb_utility.cc
 	$(CXX) -DWITH_UTIL_MAIN $(CFLAGS) $< -o $@
 
-${BUILD_ROOT}/bmpblk_utility: bmpblk_utility.cc
-	$(CXX) -DWITH_UTIL_MAIN -lyaml $(CFLAGS) $< -o $@
+${BUILD_ROOT}/bmpblk_utility.o: bmpblk_utility.cc
+	$(CXX) -DWITH_UTIL_MAIN -lyaml $(CFLAGS) -c $< -o $@
+
+${BUILD_ROOT}/bmpblk_util.o: bmpblk_util.c
+	$(CC) $(CFLAGS) -c $< -o $@
+
+${BUILD_ROOT}/bmpblk_utility: ${BUILD_ROOT}/bmpblk_utility.o ${BUILD_ROOT}/bmpblk_util.o
+	$(CXX) -DWITH_UTIL_MAIN -lyaml $(CFLAGS) $^ -o $@
 
 ${BUILD_ROOT}/load_kernel_test: load_kernel_test.c $(LIBS)
 	$(CC) $(CFLAGS) $(INCLUDES) $< -o $@ $(LIBS) -lcrypto