fs: convert makefiles to Kbuild style
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/fs/ext4/Makefile b/fs/ext4/Makefile
index f45bb32..0f5d399 100644
--- a/fs/ext4/Makefile
+++ b/fs/ext4/Makefile
@@ -9,28 +9,5 @@
# SPDX-License-Identifier: GPL-2.0+
#
-include $(TOPDIR)/config.mk
-
-LIB = $(obj)libext4fs.o
-
-AOBJS =
-COBJS-$(CONFIG_FS_EXT4) := ext4fs.o ext4_common.o dev.o
-COBJS-$(CONFIG_EXT4_WRITE) += ext4_write.o ext4_journal.o crc16.o
-
-SRCS := $(AOBJS:.o=.S) $(COBJS-y:.o=.c)
-OBJS := $(addprefix $(obj),$(AOBJS) $(COBJS-y))
-
-
-all: $(LIB) $(AOBJS)
-
-$(LIB): $(obj).depend $(OBJS)
- $(call cmd_link_o_target, $(OBJS))
-
-#########################################################################
-
-# defines $(obj).depend target
-include $(SRCTREE)/rules.mk
-
-sinclude $(obj).depend
-
-#########################################################################
+obj-$(CONFIG_FS_EXT4) := ext4fs.o ext4_common.o dev.o
+obj-$(CONFIG_EXT4_WRITE) += ext4_write.o ext4_journal.o crc16.o