diff --git a/test/Makefile b/test/Makefile
index 88573c55238..7204147715d 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -66,6 +66,15 @@ clang-tools-site-cfg: FORCE
 	$(MAKE) -C $(PROJ_OBJ_DIR)/../tools/clang/tools/extra/test lit.site.cfg
 extra-site-cfgs:: clang-tools-site-cfg
 endif
+
+ifeq ($(shell test -f $(PROJ_OBJ_DIR)/../tools/polly/Makefile && echo OK), OK)
+LIT_ALL_TESTSUITES += $(PROJ_OBJ_DIR)/../tools/polly/test
+
+# Force creation of Polly's lit.site.cfg.
+polly-tools-site-cfg: FORCE
+	$(MAKE) -C $(PROJ_OBJ_DIR)/../tools/polly/test lit.site.cfg
+extra-site-cfgs:: polly-tools-site-cfg
+endif
 endif
 endif