驅動程式 - Linux Device Driver(LDD) - 解決scripts/mod/modpost: not found問題

參考資訊：
https://unix.stackexchange.com/questions/169806/no-build-scripts-available-when-compiling-module-outside-of-linux-source-tree

問題如下：

WARNING: Symbol version dump "Module.symvers" is missing.
         Modules may not have dependencies or modversions.
  MODPOST samples/bpf/Module.symvers
/bin/sh: 1: scripts/mod/modpost: not found
make[1]: *** [scripts/Makefile.modpost:124: samples/bpf/Module.symvers] Error 127
make: *** [Makefile:1759: modules] Error 2

解法如下：

$ make modules_prepare