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From: Ujjwal Kumar <>
To: Lukas Bulwahn <>
Subject: [Linux-kernel-mentees] [PATCH RFC 0/2] use interpreters to invoke scripts
Date: Fri, 2 Oct 2020 16:08:06 +0530	[thread overview]
Message-ID: <> (raw)

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/ Permission denied
init/Kconfig:34: syntax error
init/Kconfig:33: invalid statement
init/Kconfig:34: invalid statement
sh: ./scripts/ Permission denied
init/Kconfig:39: syntax error
init/Kconfig:38: invalid statement
sh: ./scripts/ 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

1. Adds specific interpreters (in Kconfig) to invoke 

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:

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/            |  2 +-
 scripts/Makefile.package          |  4 ++--
 8 files changed, 18 insertions(+), 18 deletions(-)


Linux-kernel-mentees mailing list

             reply	other threads:[~2020-10-02 10:38 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-02 10:38 Ujjwal Kumar [this message]
2020-10-02 21:36 ` [Linux-kernel-mentees] [PATCH RFC 0/2] use interpreters to invoke scripts Ujjwal Kumar
2020-10-03  6:27   ` Lukas Bulwahn
2020-10-03  6:24 ` Lukas Bulwahn
2020-10-03 15:19 Ujjwal Kumar
2020-10-04  6:51 ` Lukas Bulwahn
2020-10-12 13:40 ` Lukas Bulwahn
2020-10-12 16:18 ` Masahiro Yamada
2020-10-12 16:36   ` Ujjwal Kumar

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