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) #