Re: default tar format for "make dist" and patch file length

[Maxim Cournoyer <maxim.cournoyer@gmail.com>]

Hi Ludo,

Ludovic Courtès <ludo@gnu.org> writes:

[...]

> Any objections against the patch below?
>
> diff --git a/configure.ac b/configure.ac
> index 84592f6041..341cff8fbd 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -8,7 +8,7 @@ AC_INIT([GNU Guix],
>    [https://www.gnu.org/software/guix/])
>  AC_CONFIG_AUX_DIR([build-aux])
>  
> -AM_INIT_AUTOMAKE([1.14 gnu silent-rules subdir-objects \
> +AM_INIT_AUTOMAKE([1.14 gnu tar-ustar silent-rules subdir-objects \
>   color-tests parallel-tests -Woverride -Wno-portability])
>  
>  # Enable silent rules by default.
>
>
> I tried it and there’s no tar warning and the file looks just fine,
> including the long file names:
>
> $ make dist -j5
> […]
> make[2]: Leaving directory '/home/ludo/src/guix'
> tardir=guix-1.3.0.8612-7cad44-dirty && tar --format=ustar -chf - "$tardir" | eval GZIP= gzip --best -c >guix-1.3.0.8612-7cad44-dirty.tar.gz
> make[1]: Leaving directory '/home/ludo/src/guix'
> if test -d "guix-1.3.0.8612-7cad44-dirty"; then find "guix-1.3.0.8612-7cad44-dirty" -type d ! -perm -200 -exec chmod u+w {} ';' && rm -rf "guix-1.3.0.8612-7cad44-dirty" || { sleep 5 && rm -rf "guix-1.3.0.8612-7cad44-dirty"; }; else :; fi
> $ tar tvf guix-1.3.0.8612-7cad44-dirty.tar.gz |grep patches/xplanet
> -rw-r--r-- ludo/users     1252 2020-04-06 00:14 guix-1.3.0.8612-7cad44-dirty/gnu/packages/patches/xplanet-1.3.1-libimage_gif.c.patch
> -rw-r--r-- ludo/users      765 2020-04-06 00:14 guix-1.3.0.8612-7cad44-dirty/gnu/packages/patches/xplanet-1.3.1-xpUtil-Add2017LeapSecond.cpp.patch
> -rw-r--r-- ludo/users     6990 2020-04-06 00:14 guix-1.3.0.8612-7cad44-dirty/gnu/packages/patches/xplanet-1.3.1-cxx11-eof.patch
> -rw-r--r-- ludo/users      783 2020-04-06 00:14 guix-1.3.0.8612-7cad44-dirty/gnu/packages/patches/xplanet-1.3.1-libdisplay_DisplayOutput.cpp.patch
>
>> Seems a good thing to be as portable as can be, especially since 200
>> chars patch file names wouldn't look good in the sources anyway ;-).
>
> I don’t think we care about “portability” as understood in the context
> of Automake, which roughly translates to “support SunOS 2 and HP-UX’s
> 1991 ‘tar’ implementation”.  :-)

Hehe.

The patch LGTM.

Thanks!

Maxim