diff -r d31f4d4075dc -r 0e1cf2cd500e tests/Makefile
--- a/tests/Makefile	Wed Dec 20 17:57:18 2023 +0100
+++ b/tests/Makefile	Wed Dec 20 18:13:30 2023 +0100
@@ -27,7 +27,7 @@
 
 TEST_DIR=$(build_dir)/tests
 
-SRC = test_utils.c ucxtest.c
+SRC = test_utils.c test_hash_key.c ucxtest.c
 
 OBJ_EXT=.o
 OBJ=$(SRC:%.c=$(TEST_DIR)/%$(OBJ_EXT))
@@ -45,6 +45,12 @@
 
 FORCE:
 
+$(TEST_DIR)/test_hash_key$(OBJ_EXT): test_hash_key.c ../src/cx/test.h \
+ ../src/cx/hash_key.h ../src/cx/common.h ../src/cx/string.h \
+ ../src/cx/allocator.h
+	@echo "Compiling $<"
+	$(CC) -o $@ $(CFLAGS) -c $<
+
 $(TEST_DIR)/test_map_generics$(OBJ_EXT): test_map_generics.c \
  test_map_generics.h ../src/cx/map.h ../src/cx/common.h \
  ../src/cx/collection.h ../src/cx/allocator.h ../src/cx/iterator.h \