[U-Boot] [PATCH v2] Makefile: Add a 'checkthumb' rule

Tom Rini
2012-03-16T16:34:35Z

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.

Changes in v2:
- Switch to ALL-$(CONFIG_SYS_THUMB_BUILD) in arch/arm/config.mk (Mike F)
- Simplfy checkthumb test after doing the above

Signed-off-by: Tom Rini <trini@ti.com>
---
Makefile | 7 +++++++
arch/arm/config.mk | 1 +
2 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/Makefile b/Makefile
index 11aac21..5af4ced 100644
--- a/Makefile
+++ b/Makefile
@@ -548,6 +548,13 @@ 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)
#
diff --git a/arch/arm/config.mk b/arch/arm/config.mk
index d4fa1f8..367baa2 100644
--- a/arch/arm/config.mk
+++ b/arch/arm/config.mk
@@ -43,6 +43,7 @@ else
PF_CPPFLAGS_ARM := $(call cc-option,-marm,) \
$(call cc-option,-mno-thumb-interwork,)
endif
+ALL-$(CONFIG_SYS_THUMB_BUILD) += checkthumb

# Try if EABI is supported, else fall back to old API,
# i. e. for example:
--
1.7.0.4