use fs type as file extension

target/cramfs/cramfs.mk

@@ -39,7 +39,7 @@ cramfsroot: cramfs
 	-@find $(TARGET_DIR) -type f -perm +111 | xargs $(STRIP) 2>/dev/null || true;
 	@rm -rf $(TARGET_DIR)/usr/man
 	@rm -rf $(TARGET_DIR)/usr/info
-	$(CRAMFS_DIR)/mkcramfs -q -D target/default/device_table.txt $(TARGET_DIR) $(IMAGE)
+	$(CRAMFS_DIR)/mkcramfs -q -D target/default/device_table.txt $(TARGET_DIR) $(IMAGE).cramfs
 
 cramfsroot-source: cramfs-source
 

target/ext2/ext2root.mk

@@ -42,7 +42,7 @@ ext2root: genext2fs
 	#-@find $(TARGET_DIR)/lib -type f -name \*.so\* | xargs $(STRIP) --strip-unneeded 2>/dev/null || true;
 	-@find $(TARGET_DIR) -type f -perm +111 | xargs $(STRIP) 2>/dev/null || true;
 	$(GENEXT2_DIR)/genext2fs -i $(GENEXT2_INODES) -b $(GENEXT2_SIZE) \
-		-d $(TARGET_DIR) -q -D target/default/device_table.txt $(IMAGE)
+		-d $(TARGET_DIR) -q -D target/default/device_table.txt $(IMAGE).ext2
 
 ext2root-source: $(DL_DIR)/$(GENEXT2_SOURCE)
 

target/jffs2/jffs2root.mk

@@ -35,7 +35,7 @@ jffs2root: mtd
 	@rm -rf $(TARGET_DIR)/usr/info
 	$(MKFS_JFFS2) --pad --little-endian --squash -e 0x20000 \
 		-D target/default/device_table.txt -d $(TARGET_DIR) \
-		-o $(IMAGE)
+		-o $(IMAGE).jffs2
 
 jffs2root-source: $(DL_DIR)/$(MTD_SOURCE)
 

target/squashfs/squashfsroot.mk

@@ -39,7 +39,7 @@ squashfsroot: squashfs
 	@rm -rf $(TARGET_DIR)/usr/man
 	@rm -rf $(TARGET_DIR)/usr/info
 	#$(SQUASHFS_DIR)/squashfs-tools/mksquashfs -q -D target/default/device_table.txt $(TARGET_DIR) $(IMAGE)
-	$(SQUASHFS_DIR)/squashfs-tools/mksquashfs $(TARGET_DIR) $(IMAGE) -noappend -root-owned
+	$(SQUASHFS_DIR)/squashfs-tools/mksquashfs $(TARGET_DIR) $(IMAGE).squashfs -noappend -root-owned
 
 squashfsroot-source: squashfs-source