ERSEK Laszlo <[email protected]> ha escrit:
> Your patch appeared on the list betwen me sending mine and mine
> appearing on the list, so no.
Ah, I see :)
> I think the motivation is that such a default option would allow
> automatically speeding up compression/decompression without changing scripts
> or routinely issued commands. Changing the compressor name directly to an
> alternative at compile time would work, but that would give no easy way out
> for people unpleased with that alternative.
OK, thanks for the explanation. Please allow me some time to think about
it.
> Let's prepare a suggestion:
>
> GNU tar should be patched in Debian to replace each instance of the
> "bzip2" program name with "/etc/alternatives/bzip2-filter" (same for
> "gzip" -> "gzip-filter" etc.), and pbzip2, lbzip2, pigz etc. should
> install alternatives. The non-standard symlink names ("bzip2-filter")
> signify that these alternatives are meant only for when filtering is
> needed, not as general replacements. This way at least a system
> administrator could change the compressors without local recompilation.
Looks reasonable, except that instead of "patching" the code,
I'd rather provide compilation time options for that. Variants are:
1. ./configure --with-compressor=bzip2=/etc/alternatives/bzip2-filter,gzip=...
2. ./configure --with-bzip2=/etc/alternatives/bzip2-filter --with-gzip=...
3. ./configure BZIP2_PROGRAM=/etc/alternatives/bzip2-filter GZIP_PROGRAM=...
In this particular case I'd rather implement (2). What do you think?
Regards,
Sergey
