[Buildroot] [Bug 12661] New: cups problems in buildroot

[Buildroot] [Bug 12661] New: cups problems in buildroot

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=12661

            Bug ID: 12661
           Summary: cups problems in buildroot
           Product: buildroot
           Version: 2019.11.2
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: Other
          Assignee: unassigned at buildroot.uclibc.org
          Reporter: skif at skif-web.ru
                CC: buildroot at uclibc.org
  Target Milestone: ---

Created attachment 8401
  --> https://bugs.busybox.net/attachment.cgi?id=8401&action=edit
configs and logs

If printing test-page (from cups web-interface), got error "Exception: open no:
No such file or directory" in web-interface 

If printing text-file (fstab for example, lp /etc/fstab), got error "Exception:
open no: No such file or directory" in web-interface.

If printing binary file, (head -n 1 /bin/cp >/1;lp -d test /1) all works fine


Used printer - hp  laserJet pro m402dn
Used driver - generic post-script (work fine fron linux-mint and gentoo)
Used defaconfig - qemu_x86_84_defconfig

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[Buildroot] [Bug 12661] cups problems in buildroot

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=12661

--- Comment #1 from Peter Seiderer <ps.report@gmx.net> ---
Maybe related to commit 'package/cups: store web-interface files under
/usr/share/cups/doc-root' ([1])?

[1]
https://git.buildroot.net/buildroot/commit/?h=2019.02.x&id=822067294a9949fa79e5ff6c6d8d6a434ef4a7a0

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[Buildroot] [Bug 12661] cups problems in buildroot

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=12661

--- Comment #2 from Alexey <skif@skif-web.ru> ---
I tried both variants - with this patch and without.

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[Buildroot] [Bug 12661] cups problems in buildroot

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=12661

--- Comment #3 from Alexey <skif@skif-web.ru> ---
I found the answer myself

It's big complex ptobleb with qpdf, cups-filters and ghostscrips
patchs sumbitted:

http://lists.busybox.net/pipermail/buildroot/2020-April/279672.html
http://lists.busybox.net/pipermail/buildroot/2020-April/279676.html
http://lists.busybox.net/pipermail/buildroot/2020-April/279677.html
http://lists.busybox.net/pipermail/buildroot/2020-April/279673.html

There are multiple issues in buildroot that faults cups printing.

First trouble is incorrect qpdf buiding.
Qpdf is mandatory dependence of cups.
In current master, qpdf builds with incorrect --no-random option. On 
any work< qpdf send 'no such file' error. For example:
qpdf /usr/share/cups/data/secret.pdf -

This commmand must get PDF file in stdout.But only 'No such file or
 directory' error present.

0/1 patch fix this by changing configure options to 
with-random=/dev/random.

Next global problem - cups-filters need ghostscript.
From  https://github.com/OpenPrinting/cups-filters/blob/master/README :
By default, pdftops uses Ghostscript if this does not get changed
    at compile time, for example by the Linux distribution vendor.

0/2 patch fix id by settinbg ghostscript as default render if 
ghostscript enabled in voard config.

Last trouble - ghostscript building without cups support.

0/3 patch fix is by removing disable-patch option. Now, if cups is 
enabled, it will be added to dependencies and correct configure 
options added to ghostscript building. Also fixed ghostscript 
buildroot building issue with unpleasant hack in configure.ac, which 
broke pkg-config. It's broke cups search by ghostscript configure 
script.
GHOSTSCRIPT_CUPS_CONFIG_FIX also needed for this task.

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[Buildroot] [Bug 12661] cups problems in buildroot

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=12661

Thomas Petazzoni <thomas.petazzoni@free-electrons.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from Thomas Petazzoni <thomas.petazzoni@free-electrons.com> ---
All these patches have been applied:

https://git.buildroot.org/buildroot/commit/?id=69dfbbd33b2afab0814c5674b0bc7f5464941fbc
https://git.buildroot.org/buildroot/commit/?id=59acde11f9f93e99df309b2ed7a14795bedbcfa9
https://git.buildroot.org/buildroot/commit/?id=f9e359d7653f4af32a491e2baf4b6e524554174b

Thanks a lot for your contribution!

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