编译内核的时候出现：

**error: Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel

Makefile:1263: recipe for target ‘prepare-objtool’ failed

make: *** [prepare-objtool] Error 1**

解决办法：

sudo apt install libssl-dev

sudo apt install libelf-dev

之后就可以正常编译内核了

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