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

Lukas Bulwahn lukas.bulwahn at gmail.com
Sat Oct 3 06:27:10 UTC 2020



On Sat, 3 Oct 2020, Ujjwal Kumar wrote:

> On 02/10/20 4:08 pm, 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
> 
> I could further test the changes as follows-
> scripts/Makefile.package:
> make rpm-pkg
> make perf-tar-src-pkg
> 
> arch/ia64/Makefile:
> make ARCH=ia64 defconfig
> 
> arch/arm64/kernel/vdso/Makefile:
> ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- make prepare
>

Add that to your next cover letter.

Lukas

> > 
> > 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
> > 
> >  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(-)
> > 
> 
> Ujjwal Kumar
> 


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