fs/ext2: fix namespace for variables

In filesystems, variables must be prefixed with ROOTFS_, to avoid
ckashing with packages of the same name.

We do not have a package named 'ext2', so we currently have no clash,
but it is still ebtter that the variables be properly namespaced.

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Kory Maincent <kory.maincent@bootlin.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

fs/ext2/ext2.mk

@@ -4,32 +4,32 @@
 #
 ################################################################################
 
-EXT2_SIZE = $(call qstrip,$(BR2_TARGET_ROOTFS_EXT2_SIZE))
-ifeq ($(BR2_TARGET_ROOTFS_EXT2)-$(EXT2_SIZE),y-)
+ROOTFS_EXT2_SIZE = $(call qstrip,$(BR2_TARGET_ROOTFS_EXT2_SIZE))
+ifeq ($(BR2_TARGET_ROOTFS_EXT2)-$(ROOTFS_EXT2_SIZE),y-)
 $(error BR2_TARGET_ROOTFS_EXT2_SIZE cannot be empty)
 endif
 
-EXT2_MKFS_OPTS = $(call qstrip,$(BR2_TARGET_ROOTFS_EXT2_MKFS_OPTIONS))
+ROOTFS_EXT2_MKFS_OPTS = $(call qstrip,$(BR2_TARGET_ROOTFS_EXT2_MKFS_OPTIONS))
 
 # qstrip results in stripping consecutive spaces into a single one. So the
 # variable is not qstrip-ed to preserve the integrity of the string value.
-EXT2_LABEL = $(subst ",,$(BR2_TARGET_ROOTFS_EXT2_LABEL))
+ROOTFS_EXT2_LABEL = $(subst ",,$(BR2_TARGET_ROOTFS_EXT2_LABEL))
 #" Syntax highlighting... :-/ )
 
-EXT2_OPTS = \
+ROOTFS_EXT2_OPTS = \
 	-d $(TARGET_DIR) \
 	-r $(BR2_TARGET_ROOTFS_EXT2_REV) \
 	-N $(BR2_TARGET_ROOTFS_EXT2_INODES) \
 	-m $(BR2_TARGET_ROOTFS_EXT2_RESBLKS) \
 	-L "$(EXT2_LABEL)" \
-	$(EXT2_MKFS_OPTS)
+	$(ROOTFS_EXT2_MKFS_OPTS)
 
 ROOTFS_EXT2_DEPENDENCIES = host-e2fsprogs
 
 define ROOTFS_EXT2_CMD
 	rm -f $@
-	$(HOST_DIR)/sbin/mkfs.ext$(BR2_TARGET_ROOTFS_EXT2_GEN) $(EXT2_OPTS) $@ \
-		"$(EXT2_SIZE)" \
+	$(HOST_DIR)/sbin/mkfs.ext$(BR2_TARGET_ROOTFS_EXT2_GEN) $(ROOTFS_EXT2_OPTS) $@ \
+		"$(ROOTFS_EXT2_SIZE)" \
 	|| { ret=$$?; \
 	     echo "*** Maybe you need to increase the filesystem size (BR2_TARGET_ROOTFS_EXT2_SIZE)" 1>&2; \
 	     exit $$ret; \