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kbuild: turn of dtc unit address warnings by default

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DTC 1.4.2 or later checks DT unit-address without reg property and
vice-versa, and generates lots of warnings.  Fixing DT files will
take for a while.  Until then, let's turn off the check unless
building with W=*.

Introduce a new helper dtc-option to check if the option is supported
in order to suppress warnings on older versions.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Masahiro Yamada
2017-02-27 15:24:45 +09:00
committed by Tom Rini
parent 0574f786d3
commit 4b83f0d98a
3 changed files with 12 additions and 1 deletions
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2
Makefile
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@@ -371,7 +371,7 @@ export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
export CPP AR NM LDR STRIP OBJCOPY OBJDUMP export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
export MAKE AWK PERL PYTHON export MAKE AWK PERL PYTHON
export HOSTCXX HOSTCXXFLAGS DTC CHECK CHECKFLAGS export HOSTCXX HOSTCXXFLAGS CHECK CHECKFLAGS DTC DTC_FLAGS
export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
export KBUILD_CFLAGS KBUILD_AFLAGS export KBUILD_CFLAGS KBUILD_AFLAGS

5
scripts/Kbuild.include
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@@ -172,6 +172,11 @@ ld-version = $(shell $(LD) --version | $(srctree)/scripts/ld-version.sh)
# Usage: $(call ld-ifversion, -ge, 22252, y) # Usage: $(call ld-ifversion, -ge, 22252, y)
ld-ifversion = $(shell [ $(ld-version) $(1) $(2) ] && echo $(3) || echo $(4)) ld-ifversion = $(shell [ $(ld-version) $(1) $(2) ] && echo $(3) || echo $(4))
# dtc-option
# Usage: DTC_FLAGS += $(call dtc-option,-Wno-unit_address_vs_reg)
dtc-option = $(call try-run,\
echo '/dts-v1/; / {};' | $(DTC) $(1),$(1),$(2))
###### ######
### ###

6
scripts/Makefile.extrawarn
View File

@@ -57,4 +57,10 @@ ifeq ("$(strip $(warning))","")
endif endif
KBUILD_CFLAGS += $(warning) KBUILD_CFLAGS += $(warning)
else
# Disable noisy checks by default
DTC_FLAGS += $(call dtc-option,-Wno-unit_address_vs_reg)
endif endif