BaseTools/tools_def: use separate PP definition for DTC
Clang's preprocessor behaves differently from GCC's, and produces intermediate device tree source that still contains #pragma pack() and other directives that the device tree compiler chokes on. For assembling device tree sources, it matters very little which preprocessor is being used, so let's just use GNU CPP explicitly. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org> Reviewed-by: Liming Gao <liming.gao@intel.com>
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@@ -278,7 +278,7 @@
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$(OUTPUT_DIR)(+)${s_dir}(+)${s_base}.dtb
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<Command.GCC>
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"$(PP)" $(DTCPP_FLAGS) $(INC) ${src} > ${d_path}(+)${s_base}.i
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"$(DTCPP)" $(DTCPP_FLAGS) $(INC) ${src} > ${d_path}(+)${s_base}.i
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"$(DTC)" $(DTC_FLAGS) -I dts -O dtb -o ${dst} ${d_path}(+)${s_base}.i
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[Visual-Form-Representation-File]
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