From 90fdd091767ed8674846dd99ba505d58977b2b54 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ga=C3=ABtan=20Harter?= <gaetan.harter@fu-berlin.de>
Date: Wed, 20 Jun 2018 18:59:21 +0200
Subject: [PATCH] Makefile.include: detect if BASELIBS changed after its first
 use

---
 Makefile.include | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Makefile.include b/Makefile.include
index 49eb367a2c..6ee815bd93 100644
--- a/Makefile.include
+++ b/Makefile.include
@@ -362,6 +362,9 @@ LINKFLAGPREFIX ?= -Wl,
 
 DIRS += $(EXTERNAL_MODULE_DIRS)
 
+# Save value to verify it is not modified later
+_BASELIBS_VALUE_BEFORE_USAGE := $(BASELIBS)
+
 # Linker rule
 $(ELFFILE): FORCE
 ifeq ($(BUILDOSXNATIVE),1)
@@ -644,4 +647,12 @@ ifneq (all, $(.DEFAULT_GOAL))
   $(error .DEFAULT_GOAL := $(.DEFAULT_GOAL))
 endif
 
+
+# Detect if BASELIBS changed since its first use
+ifneq ($(_BASELIBS_VALUE_BEFORE_USAGE),$(BASELIBS))
+  $(warning $(sort $(filter-out $(_BASELIBS_VALUE_BEFORE_USAGE), $(BASELIBS)) \
+                   $(filter-out $(BASELIBS), $(_BASELIBS_VALUE_BEFORE_USAGE))))
+  $(error BASELIBS value changed)
+endif
+
 endif # BOARD=none