diff --git a/BSDmakefile b/BSDmakefile
new file mode 100644
index 000000000..e2e3b9adf
--- /dev/null
+++ b/BSDmakefile
@@ -0,0 +1,3 @@
+all:
+	@echo "Error: BSD Make not supported"
+	@echo "Please use GNU Make (gmake) to build fish. Refer to README.md for detailed build instructions."