#8306: Parallel inter/intra-spkg builds
----------------------------+-----------------------------------------------
Reporter: mpatel | Owner: GeorgSWeber
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-4.3.4
Component: build | Keywords:
Author: Mitesh Patel | Upstream: N/A
Reviewer: David Kirkby | Merged:
Work_issues: |
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Comment(by drkirkby):
Replying to [comment:35 mvngu]:
> Perhaps a more appropriate place is to deposit MD5 files of spkg's under
> {{{
> SAGE_ROOT/spkg/md5
> }}}
> This would nicely solve ticket #329 after more than 3 years.
See my comment on #329. The problem with md5 is that there is no standard
command for getting the md5 checksum. I've seen
* md5
* md5sum
* digest -a md5 ('digest' is part of OpenSSL, and is what I use on
Solaris)
It is not a standard POSIX command. In contrast, 'cksum' is much more
portable, as it is defined by POSIX.
http://www.opengroup.org/onlinepubs/9699919799/utilities/cksum.html
It is a 32-bit bit number, so the probability of an error not being
detected is around 2.3 x 10^-10.
Avoid using 'sum' - that is not portable, as the algorithm is
implementation dependent.
Dave
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8306#comment:39>
Sage <http://www.sagemath.org>
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