Re: [PATCH v6 06/12] kbuild: deb-pkg: make .orig tarball a hard link if possible

Nicolas Schier
2023-02-24T22:43:02Z

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On Wed, Feb 15, 2023 at 10:20:28AM +0900 Masahiro Yamada wrote:
> If '..' belongs to the same filesystem, create a hard link instead of
> a copy. In most cases, you can save disk space.
>
> I do not want to use 'mv' because keeping linux.tar.gz is useful to
> avoid unneeded rebuilding of the tarball.
>
> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
> ---
>
> Changes in v6:
> - New patch
>
> scripts/Makefile.package | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/scripts/Makefile.package b/scripts/Makefile.package
> index c207f4ec47ac..80a96eb61426 100644
> --- a/scripts/Makefile.package
> +++ b/scripts/Makefile.package
> @@ -96,7 +96,11 @@ debian-orig: private source = $(shell dpkg-parsechangelog -S Source)
> debian-orig: private version = $(shell dpkg-parsechangelog -S Version | sed 's/-[^-]*$$//')
> debian-orig: private orig-name = $(source)_$(version).orig.tar.gz
> debian-orig: linux.tar.gz debian
> - $(Q)cp $< ../$(orig-name)
> + $(Q)if [ "$(df --output=target .. 2>/dev/null)" = "$(df --output=target $< 2>/dev/null)" ]; then \
> + ln -f $< ../$(orig-name); \
> + else \
> + cp $< ../$(orig-name); \
> + fi
>
> PHONY += deb-pkg
> deb-pkg: debian-orig
> --
> 2.34.1

Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>

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