系统搭建遇到问题2：build DTC提示make: *** No rule to make target '/dtc-parser.tab.h', needed by '/dtc-lexer.lex.o'. Stop.

为了生成U-Boot，U-Boot depends upon an externally build device tree compiler (dtc) in order to build successfully. Please build the dtc tool before proceeding U-boot。需要提前Build DTC，dtc的源代码位于Linux文件/scripts/dtc/路径。根据参考Xilinx的向导Build Device Tree Compiler (dtc)【1】，进入dtc源目录，执行为了生成U-Boot，U-Boot depends upon an externally bu