On Sat, Nov 7, 2009 at 11:00 PM, Dr. David Kirkby
<david.kir...@onetel.net> wrote:
> Gonzalo Tornaria wrote:
>> Is it really necessary for sage-bdist to preserve hardlinks?
>>
>> [ ... checking a bdist tarball of 4.1.1 ... ]
>>
>> there is exactly one hardlink in this bdist tarball:
>> "local/bin/python" is a hardlink to "local/bin/python2.6".
>>
>> IOW, using -P instead of -d would produce a tarball with two copies of
>> the python binary. Shouldn't this be handled with a symbolic link
>> instead?
>
> I would have thought so too. But I'm puzzled, as python-2.6.2.p4/spkg-install
> creates a symbolic link. It has the line:
>
> ln -s python2.6 python
This is actually creating a local/lib/python symlink to local/lib/python2.6.
It seems to me the line at fault is in file
python-2.6.2.p4/src/Makefile.pre.in, line 763:
(cd $(DESTDIR)$(BINDIR); $(LN) python$(VERSION)$(EXE) $(PYTHON))
an "-s" option to that could make a difference, I think. (I didn't try it)
>> My suggestion would be:
>>
>> a. fix installation of python so that a symlink is used instead of a hard
>> link
>
> Do you know where this bit of code is? As I say, from what I can see, the link
> should be created as a symbolic link, not a hard link.
>
>> b. use -PRp as options for cp (this is posix!)
>> c. for the sage-main directory, use the trailing / trick so the -L /
>> -H option is not necessary (double check this with whoever wrote the
>> sage-bdist script to use -L option)
Actually, use a trailing "/." as this is more portable.
>> d. for systems where -P is not supported, figure out a way to copy
>> preserving symlinks.
For the HP-UX, it turns out that "cp -Rp" is good. It preserves
symlinks, and it turned out also hard links.
Gonzalo
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