1 files changed, 7 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 023ea23..351a8f0 100644
--- a/Makefile
+++ b/Makefile
@@ -556,6 +556,13 @@ SYSTEM_MAP = \
 $(obj)System.map:	$(obj)u-boot
 		@$(call SYSTEM_MAP,$<) > $(obj)System.map
 
+checkthumb:
+	@if test $(call cc-version) -lt 0404; then \
+		echo -n '*** Your GCC does not produce working '; \
+		echo 'binaries in THUMB mode.'; \
+		echo '*** Your board is configured for THUMB mode.'; \
+		false; \
+	fi
 #
 # Auto-generate the autoconf.mk file (which is included by all makefiles)
 #