From cdd19cd52073ed037f38ede442a5c9300aabe146 Mon Sep 17 00:00:00 2001
From: Thomas Debesse <dev@illwieckz.net>
Date: Fri, 5 Jul 2019 03:45:26 +0200
Subject: [PATCH] makefile: deprecate the legacy Makefile

requires make to be called this way:

	make I_KNOW_MAKEFILE_IS_DEPRECATED=1
---
 Makefile | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Makefile b/Makefile
index 7e292245..5a9252ea 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,10 @@
+ifeq ($(I_KNOW_MAKEFILE_IS_DEPRECATED),)
+    $(shell printf 'ERROR: Makefile build is deprecated, use CMake instead, see README.md\n\n' >&2)
+    $(error I_KNOW_MAKEFILE_IS_DEPRECATED is not set)
+else
+    $(shell printf 'WARNING: deprecated Makefile build enforced\n\n' >&2)
+endif
+
 MAKEFILE_CONF      ?= Makefile.conf
 -include $(MAKEFILE_CONF)
 
-- 
2.39.2