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SubjectRe: [PATCH v2 1/3] scripts/package/Makefile: put proper config in source tarball
On Sat, Mar 09, 2019 at 06:43:05PM +0300, Arseny Maslennikov wrote:
> It is widely known that one can build a kernel without a .config in the
> source tree by setting KCONFIG_CONFIG equal to the actual configuration
> file path.
>
> When making a *-pkg target, make(1) prepares a source tarball and tries
> to pack `.config' in there regardless of the value of KCONFIG_CONFIG,
> failing spectacularly if .config is absent and packing the wrong config
> if it exists.
> Let's fix that by including whatever KCONFIG_CONFIG points to in the
> archive under the traditional name `.config'.
>
> We have to pass --absolute-names to tar, since it seems to trim the
> paths of archive members first and only then consider --transform, which
> breaks KCONFIG_CONFIG=../../some.config, as well as absolute paths.

One way to avoid --absolute-names here is to do the dance below:

>
> Signed-off-by: Arseny Maslennikov <ar@cs.msu.ru>
> ---
> scripts/package/Makefile | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/scripts/package/Makefile b/scripts/package/Makefile
> index 2c6de21e5152..134cefee068d 100644
> --- a/scripts/package/Makefile
> +++ b/scripts/package/Makefile
> @@ -27,7 +27,7 @@ KDEB_SOURCENAME ?= linux-$(KERNELRELEASE)
> KBUILD_PKG_ROOTCMD ?="fakeroot -u"
> export KDEB_SOURCENAME
> # Include only those top-level files that are needed by make, plus the GPL copy
> -TAR_CONTENT := $(KBUILD_ALLDIRS) .config .scmversion Makefile \
> +TAR_CONTENT := $(KBUILD_ALLDIRS) $(KCONFIG_CONFIG) .scmversion Makefile \
> Kbuild Kconfig COPYING $(wildcard localversion*)
> MKSPEC := $(srctree)/scripts/package/mkspec
>
> @@ -44,6 +44,7 @@ if test "$(objtree)" != "$(srctree)"; then \
> fi ; \
> $(srctree)/scripts/setlocalversion --save-scmversion; \
+cp $(KCONFIG_CONFIG) .tmp.config-tarball
> tar -cz $(RCS_TAR_IGNORE) -f $(2).tar.gz \
+ --absolute-names --transform 's:^.tmp.config-tarball$$:.config:S' \
> --transform 's:^:$(2)/:S' $(TAR_CONTENT) $(3); \
+rm -f .tmp.config-tarball
> rm -f $(objtree)/.scmversion
>
> --
> 2.20.1
>

I'm not sure if this is strictly better.
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