生成Linux内核.config文件使源文件夹不干净

Question

I am currently trying to rebuild a linux kernel, and I'm experimenting some difficulties.

I have modified the .config using make menuconfig.

...
make[1]: Entering directory '/home/doe/build/linux'
  CHK     include/config/kernel.release
  GEN     ./Makefile
  CHK     include/generated/uapi/linux/version.h
  CHK     include/generated/utsrelease.h
  Using /home/doe/workspace/linux as source for kernel
  /home/doe/workspace/linux is not clean, please run 'make mrproper'
  in the '/home/doe/workspace/linux' directory.
/home/doe/workspace/linux/Makefile:1027: recipe for target 'prepare3' failed
make[1]: *** [prepare3] Error 1
...

Then I tried to run make mrproper. It works well and deletes my .config file from my build folder. Without surprise I cannot build because a .config file is missing.

I did a make defconfig followed by a make -j 8, just to try to build with some basic config file.

  ...
  HOSTCC  scripts/mod/file2alias.o
  HOSTLD  scripts/mod/modpost
  HOSTCC  arch/x86/tools/relocs_32.o
  HOSTCC  arch/x86/tools/relocs_64.o
  HOSTCC  arch/x86/tools/relocs_common.o
  Using /home/doe/workspace/linux as source for kernel
  /home/doe/workspace/linux is not clean, please run 'make mrproper'
  in the '/home/doe/workspace/linux' directory.
/home/doe/workspace/linux/Makefile:1027: recipe for target 'prepare3' failed
make[1]: *** [prepare3] Error 1
make[1]: *** Waiting for unfinished jobs....
  HOSTLD  arch/x86/tools/relocs
make[1]: *** wait: No child processes.  Stop.
Makefile:152: recipe for target 'sub-make' failed
make: *** [sub-make] Error 2

How am I supposed to build if generating a .config makes the source folder unclean ?

Answer 1

You should check whether the " include/config " directory exists in your kernel source.

The prepare3 target checks the ' .config ' file and the ' include/config ' directory. You could find this by searching " prepare3 " in the Makefile