[LON-CAPA-admin] CentOS/Red Hat/Scientific Linux 6 -- ImageMagick
Stuart Raeburn
raeburn at msu.edu
Fri Jun 26 11:18:03 EDT 2015
Hi,
Packages for ImageMagick and ImageMagick-perl which contain newer
versions than those present in the distribution's standard
repositories have been added to LON-CAPA's own yum repositories for
CentOS, Red Hat, and Scientific Linux 6 (both 64 bit and 32 bit
architectures).
When the CHECKRPMS script (run by cron on alternate nights) next runs
it will advise using yum to update ImageMagick and ImageMagick-perl
from 6.5.4.7-7.el6 to 6.8.9-7.dist6.lc (where dist = centos, rhel, or
sl).
The newer packages create valid postscript when generating PDF
printouts in LON-CAPA for resources containing certain types of jpeg
images (e.g., see
http://mail.lon-capa.org/pipermail/lon-capa-users/2015-June/004878.html
).
ImageMagick for LON-CAPA servers running other distros: CentOS 5 or 7,
Ubuntu 12 or 14, or SLES11 do not need updating, as they already
support printout generation for resources of this type.
In the case of CentOS/Red Hat/Scientific Linux 5, updated ImageMagick
rpms which were built previously (June 2014 -- rev. 6.8.8.2) to
address a different issue to do with conversion of 8-bit alpha channel
png files (see bug 6652 --
http://bugs.loncapa.org/show_bug.cgi?id=6652#c9) can also support
conversion of these jpeg images.
At least one other distro -- Ubuntu 10 LTS -- needs a newer version of
ImageMagick to support printout generation for resources containing
these types of jpeg images. However, 10.04 LTS reached end of life on
April 30, 2015, so any LON-CAPA domains running servers still using it
should consider upgrading to either Ubuntu 12 LTS or 14 LTS.
Stuart Raeburn
LON-CAPA Academic Consortium
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