[U-Boot] [PATCH 2/2] Makefile: Add a 'checkthumb' rule

Tom Rini
2012-03-16T15:27:48Z

This rule confirms that if we're on ARM and we have enabled THUMB builds
that we have a new enough toolchain to produce a working binary.

Signed-off-by: Tom Rini <trini@ti.com>
---
Makefile | 11 ++++++++++-
1 files changed, 10 insertions(+), 1 deletions(-)

diff --git a/Makefile b/Makefile
index 11aac21..b7f5848 100644
--- a/Makefile
+++ b/Makefile
@@ -515,7 +515,7 @@ updater:

# Explicitly make _depend in subdirs containing multiple targets to prevent
# parallel sub-makes creating .depend files simultaneously.
-depend dep: $(TIMESTAMP_FILE) $(VERSION_FILE) \
+depend dep: checkthumb $(TIMESTAMP_FILE) $(VERSION_FILE) \
$(obj)include/autoconf.mk \
$(obj)include/generated/generic-asm-offsets.h \
$(obj)include/generated/asm-offsets.h
@@ -548,6 +548,15 @@ SYSTEM_MAP = \
$(obj)System.map: $(obj)u-boot
@$(call SYSTEM_MAP,$<) > $(obj)System.map

+checkthumb:
+ @if test "$(ARCH)" = "arm" -a "$(CONFIG_SYS_THUMB_BUILD)" = "y"; then \
+ 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 ; \
+ fi
#
# Auto-generate the autoconf.mk file (which is included by all makefiles)
#
--
1.7.0.4