Makefile: Add a 'checkthumb' rule

[platform/kernel/u-boot.git] / Makefile

diff --git a/Makefile b/Makefile
index 023ea23..351a8f0 100644 (file)
--- 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)
 #