[Linux-kernel-mentees] [PATCH RFC 0/2] use interpreters to invoke scripts

[Lukas Bulwahn]

On Fri, 2 Oct 2020, Ujjwal Kumar wrote:

> This patch series aims at removing the dependency on execute 
> bit of the scripts in the kbuild system.
> 
> If not working with fresh clone of linux-next, clean the srctree:
> make distclean
> make tools/clean
> 
> To test the dependency on execute bits, I tried building the 
> kernel after removing x-bits for all files in the repository.
> Removing execute bits:
> for i in $(find -executable -type f); do chmod -x $i; done
> 
> Any attempts to configure (or build) the kernel fail because of 
> 'Permission denied' on scripts with the following error:
> $ make allmodconfig
> sh: ./scripts/gcc-version.sh: Permission denied
> init/Kconfig:34: syntax error
> init/Kconfig:33: invalid statement
> init/Kconfig:34: invalid statement
> sh: ./scripts/ld-version.sh: Permission denied
> init/Kconfig:39: syntax error
> init/Kconfig:38: invalid statement
> sh: ./scripts/clang-version.sh: Permission denied
> init/Kconfig:49: syntax error
> init/Kconfig:48: invalid statement
> make[1]: *** [scripts/kconfig/Makefile:71: allmodconfig] Error 1
> make: *** [Makefile:606: allmodconfig] Error 2
> 
> Changes:
> 1. Adds specific interpreters (in Kconfig) to invoke 
> scripts.
> 
> After this patch I could successfully do a kernel build 
> without any errors.
> 
> 2. Again adds specific interpreters to other parts of 
> kbuild system.
> 
> I could successfully perform the following make targets after 
> applying the second patch:
> make headerdep
> make kselftest-merge
> 
> Following changes in the patch 2/2 are not yet tested:
> arch/*
> scripts/*
> 
> Ujjwal Kumar (2):
>   kconfig: use interpreters to invoke scripts
>   kbuild: use interpreters to invoke scripts
>

Cover letter sounds good. Patches look good.

I suggest you send this out to the recipients you mentioned.

I will try to reproduce your setup and test the patches in the meantime.

Lukas

>  Makefile                          |  4 ++--
>  arch/arm64/kernel/vdso/Makefile   |  2 +-
>  arch/arm64/kernel/vdso32/Makefile |  2 +-
>  arch/ia64/Makefile                |  4 ++--
>  arch/nds32/kernel/vdso/Makefile   |  2 +-
>  init/Kconfig                      | 16 ++++++++--------
>  scripts/Makefile.build            |  2 +-
>  scripts/Makefile.package          |  4 ++--
>  8 files changed, 18 insertions(+), 18 deletions(-)
> 
> -- 
> 2.26.2
> 
>