[Buildroot] [PATCH] support/download/svn: generate reproducible svn archives

[Yann E. MORIN <yann.morin.1998@free.fr>]

Heiko, All,

On 2019-12-22 22:31 +0100, Heiko Thiery spake thusly:
> To generate a reproducible archive from a svn repository mainly the same
> aproach is done like for the archives from a git repository.
> 
> Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>

That patch has been long applied now, but I just noticed that we forgot
to enable hash checks for svn tarbals:

    https://git.buildroot.org/buildroot/tree/package/pkg-generic.mk#n580

I'll take it on me to fix that, as I'm already working in this area...

Regards,
Yann E. MORIN.

> ---
>  support/download/svn | 17 ++++++++++++++++-
>  1 file changed, 16 insertions(+), 1 deletion(-)
> 
> diff --git a/support/download/svn b/support/download/svn
> index 542b25c0a2..505cdd58b1 100755
> --- a/support/download/svn
> +++ b/support/download/svn
> @@ -38,4 +38,19 @@ _svn() {
>  
>  _svn export ${verbose} "${@}" "'${uri}@${rev}'" "'${basename}'"
>  
> -tar czf "${output}" "${basename}"
> +# Generate the archive, sort with the C locale so that it is reproducible.
> +# We do not want the .svn dir; we keep other .svn files, in case they are the
> +# only files in their directory.
> +find "${basename}" -not -type d \
> +       -and -not -path "./.svn/*" >"${output}.list"
> +LC_ALL=C sort <"${output}.list" >"${output}.list.sorted"
> +
> +# Create GNU-format tarballs, since that's the format of the tarballs on
> +# sources.buildroot.org and used in the *.hash files
> +tar cf - --transform="s#^\./#${basename}/#" \
> +         --numeric-owner --owner=0 --group=0 --mtime="${date}" --format=gnu \
> +         -T "${output}.list.sorted" >"${output}.tar"
> +gzip -6 -n <"${output}.tar" >"${output}"
> +
> +rm -f "${output}.list"
> +rm -f "${output}.list.sorted"
> -- 
> 2.20.1
> 

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