--- Makefile.in.orig	2022-02-05 21:30:36 UTC
+++ Makefile.in
@@ -892,7 +892,7 @@ autoopts:
 
 test:
 	echo Making test in $(TEST_DIR)
-	cd $(TEST_DIR) && make test
+	cd $(TEST_DIR) && gmake test
 
 dlt_names:
 	cat @SAVEFILE_C@ | $(top_builddir)/scripts/dlt2name.pl src/dlt_names.h