diff -r b0c4750cecd8 -r 425234b05dff src/Makefile
--- a/src/Makefile	Sat Jan 20 16:02:04 2024 +0100
+++ b/src/Makefile	Mon Jan 22 19:34:38 2024 +0100
@@ -24,7 +24,7 @@
 include ../config.mk
 
 SRC = allocator.c array_list.c buffer.c compare.c hash_key.c hash_map.c \
-  linked_list.c list.c map.c mempool.c printf.c string.c utils.c
+  linked_list.c list.c map.c tree.c mempool.c printf.c string.c utils.c
 
 OBJ_EXT=.o
 OBJ=$(SRC:%.c=$(build_dir)/%$(OBJ_EXT))
@@ -124,6 +124,10 @@
 	@echo "Compiling $<"
 	$(CC) -o $@ $(CFLAGS) -c $<
 
+$(build_dir)/tree$(OBJ_EXT): tree.c cx/tree.h cx/common.h
+	@echo "Compiling $<"
+	$(CC) -o $@ $(CFLAGS) -c $<
+
 $(build_dir)/utils$(OBJ_EXT): utils.c cx/utils.h cx/common.h
 	@echo "Compiling $<"
 	$(CC) -o $@ $(CFLAGS) -c $<