Hi Doug,
thank you for the info! I've CCed Richard, who maintains pappl - you're
right, this will have to be fixed in PAPPL before packaging
pappl-retrofit - some with downstream patch, some with spec file changes.
Zdenek
On 7/4/23 04:12, Douglas Kosovic wrote:
Hi Zdenek,
Regarding packaging pappl-retrofit and printer applications, looking at the pappl-retrofit based snaps from Till Kamppeter, I suspect the existing Fedora pappl package might need to be modified.
For example, extract from ps-printer-app's snapcraft.yaml file which modifies pappl's default build settings:
https://github.com/OpenPrinting/ps-printer-app/blob/master/snap/snapcraft.yaml
pappl:
...
override-build: |
set -eux
# Raise the supported number of vendor-specific options/attributes in
# PAPPL to 256, as the original 32 can be too small for some busy PPD
# files
perl -p -i -e 's/(define\s+PAPPL_MAX_VENDOR\s+)32/\1 256/' pappl/printer.h
# De-activate log-rotating. It does not work with the forked processes
# of the filters
perl -p -i -e 's/(system->logmaxsize\s+=).*/\1 0;/' pappl/system.c
# As we do not use PAPPL's own backends but the CUPS backends using the
# "cups" device scheme of pappl-retrofit, we let the manual "Network
# Printer" device on the "Add Printer" page of the web interface use a
# "cups:socket://..." URI instead of simply "socket://..."
perl -p -i -e 's/(httpAssembleURI\(.*?)"socket"(.*?\))/\1"cups:socket"\2/' pappl/system-webif.c
# PAPPL's build system does not insert the LDFLAGS when linking.
# Patching Makedefs.in to fix this
perl -p -i -e 's/^(\s*DSOFLAGS\s*=\s*\S*\s+)/\1\$\(LDFLAGS\) /' Makedefs.in
Cheers,
Doug
-----Original Message-----
From: Zdenek Dohnal <zdohnal@xxxxxxxxxx>
Sent: Thursday, May 18, 2023 4:26 AM
To: Development discussions related to Fedora <devel@xxxxxxxxxxxxxxxxxxxxxxx>
Subject: PWG+OpenPrinting meetup 2023
Hi all,
I've joined annual PWG+OpenPrinting virtual meetup where the news and statuses from the current printing development are discussed.
The main points are:
- cups-filters 2.0 betas and release candidates are released and present in Fedora 38
- since new cups-filters are in Fedora 38, nothing stands in the way of packaging pappl-retrofit and printer applications based on it into Fedora as RPMs - any volunteers are welcome!
- CUPS 2.4.x, CUPS 2.5 and CUPS 3.0 are delayed:
- 2.4.x - there are several regressions I haven't able to tackle yet, but I hope there is a new version in a month
- 2.5 - OAuth support took lot of time to implement
- 3.0 - libcups (its version 3.0) has a beta which developers which uses libcups 2.0 can compile and link their applications and see what changed between major release
- GTK (its version 4) has merged support for Common Print Dialog Backends - universal print dialog, which can work not only with cups, but with other possible backends (like google cloud print)
- WIP on Printer Setup Tool for GNOME Control Center - full support for driverless printers and printers via printer applications
The full report is attached.
Zdenek
--
Zdenek Dohnal
Senior Software Engineer
Red Hat, BRQ-TPBC
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