[mythtv-users] web app gets 404 on backend built with cmake on Archlinux

Sun Feb 16 18:32:27 UTC 2025

On Sun, Feb 16, 2025 at 10:38 AM Roland Ernst <rcrernst at gmail.com> wrote:

>
>
> On Sun, Feb 16, 2025 at 3:40 PM James Abernathy <jfabernathy at gmail.com>
> wrote:
>
>>
>>
>> On Sun, Feb 16, 2025 at 8:57 AM Peter Bennett <pb.mythtv at gmail.com>
>> wrote:
>>
>>>
>>> On 2/15/25 21:20, James Abernathy wrote:
>>>
>>>
>>>
>>> On Sat, Feb 15, 2025 at 8:33 PM Peter Bennett <pb.mythtv at gmail.com>
>>> wrote:
>>>
>>>>
>>>> On 2/15/25 18:12, James Abernathy wrote:
>>>>
>>>> After a successful build of mythv using cmake on Archlinux, I copied
>>>> all the files from the "CMAKE_INSTALL_PREFIX=mythtv-qt5-build" location to
>>>> /usr/local/ and then did 'sudo ldconfig'
>>>>
>>>> I set up the mythtv-backend.service so it's would find mythbackend in
>>>> /usr/local/bin/
>>>>
>>>> When I reboot, it shows mythtv-backend running but when I send firefox
>>>> to localhost:6544, I see this in the log and a 404 error in the browser.
>>>>
>>>> This had worked a few days ago on Debian. Maybe I'm missing something?
>>>>
>>>> Feb 15 18:03:27 nucboxg3 mythbackend[1972]: mythbackend[1972]: W HTTP0
>>>> mythhttpfile.cpp:50 (ProcessFile) HTTPFile: Failed to find
>>>> '/home/jim/mythtv-qt5-build/share/mythtv/html/apps/backend/index.html'
>>>>
>>>> Jim A
>>>>
>>>>
>>>> The value of -DMYTH_RUN_PREFIX= determines where it should run from. I
>>>> suspect that you had -DMYTH_RUN_PREFIX set as some incorrect value.
>>>>
>>>> Also at run time you can use MYTHTVDIR=/usr/local to override an
>>>> incorrect MYTH_RUN_PREFIX used when building.
>>>>
>>>> Peter
>>>>
>>>
>>> There must be something else as well. See output below:
>>>
>>>  [jim at nucboxg3 ~]$ echo $MYTHTVDIR
>>> /usr/local
>>>
>>> [jim at nucboxg3 ~]$ sudo systemctl status mythtv-backend
>>> ● mythtv-backend.service - MythTV Backend
>>>      Loaded: loaded (/etc/systemd/system/mythtv-backend.service;
>>> enabled; preset: disabled)
>>>      Active: active (running) since Sat 2025-02-15 21:11:32 EST; 3min
>>> 37s ago
>>>  Invocation: d890ede46af54a038a61a21fd2bc7d69
>>>        Docs: https://www.mythtv.org/wiki/Mythbackend
>>>    Main PID: 699 (mythbackend)
>>>       Tasks: 9 (limit: 18663)
>>>      Memory: 169.7M (peak: 172.3M)
>>>         CPU: 573ms
>>>      CGroup: /system.slice/mythtv-backend.service
>>>              └─699 /usr/local/bin/mythbackend --quiet --syslog local7
>>>
>>> Feb 15 21:11:34 nucboxg3 mythbackend[699]: mythbackend[699]: I
>>> HTTPServer serverpool.cpp:421 (listen) Listening on TCP 0.0.0.0:6544
>>> Feb 15 21:11:34 nucboxg3 mythbackend[699]: mythbackend[699]: I
>>> HTTPServer serverpool.cpp:421 (listen) Listening on TCP [::]:6544
>>> Feb 15 21:11:34 nucboxg3 mythbackend[699]: mythbackend[699]: I
>>> HTTPServer serverpool.cpp:421 (listen) Listening on TCP 0.0.0.0:6744
>>> Feb 15 21:11:34 nucboxg3 mythbackend[699]: mythbackend[699]: I
>>> HTTPServer serverpool.cpp:421 (listen) Listening on TCP [::]:6744
>>> Feb 15 21:11:35 nucboxg3 mythbackend[699]: mythbackend[699]: I
>>> HTTPServer bonjourregister.cpp:116 (BonjourCallback) Bonjour: Service
>>> registration complete: name 'mythbackend on nucboxg3' type '_http._tcp.'
>>> domain: 'loca>
>>> Feb 15 21:12:28 nucboxg3 mythbackend[699]: mythbackend[699]: I HTTP0
>>> mythhttpmetaservice.cpp:126 (MythHTTPMetaService) Service '/services/'
>>> introspection complete
>>> Feb 15 21:12:28 nucboxg3 mythbackend[699]: mythbackend[699]: W HTTP0
>>> mythhttpfile.cpp:50 (ProcessFile) HTTPFile: Failed to find
>>> '/home/jim/mythtv-qt5-output/share/mythtv/html/apps/backend/index.html'
>>> Feb 15 21:12:28 nucboxg3 mythbackend[699]: mythbackend[699]: W HTTP0
>>> mythhttpfile.cpp:50 (ProcessFile) HTTPFile: Failed to find
>>> '/home/jim/mythtv-qt5-output/share/mythtv/html/apps/backend/index.html'
>>> Feb 15 21:12:28 nucboxg3 mythbackend[699]: mythbackend[699]: W HTTP0
>>> mythhttpfile.cpp:50 (ProcessFile) HTTPFile: Failed to find
>>> '/home/jim/mythtv-qt5-output/share/mythtv/html/favicon.ico'
>>> Feb 15 21:12:28 nucboxg3 mythbackend[699]: mythbackend[699]: W HTTP0
>>> mythhttpfile.cpp:50 (ProcessFile) HTTPFile: Failed to find
>>> '/home/jim/mythtv-qt5-output/share/mythtv/html/apps/backend/index.html'
>>> lines 1-22/22 (END)
>>>
>>> Even though it's looking the a different place, the files are there:
>>>
>>> cd mythtv-qt5-output/share/mythtv/html/apps/backend/
>>> [jim at nucboxg3 backend]$ ls
>>> 3rdpartylicenses.txt  color.png  favicon.ico  hue.png  index.html
>>>  main.js  polyfills.js  runtime.js  styles.css
>>> [jim at nucboxg3 backend]$
>>>
>>> Jim A
>>>
>>> Did you export MYTHTVDIR=/usr/local in the systemd service?
>>>
>>> Better to build with the correct MYTH_RUN_PREFIX so that you don't need
>>> to specify MYTHTVDIR in the systemd service. I only use MYTHTVDIR for
>>> testing and debugging or when running mythbackend from the command line.
>>>
>>> Peter
>>>
>> I'm not completely sure I understand the MYTH_RUN_PREFIX.  If I'm
>> building with -DCMAKE_INSTALL_PREFIX=~/my_mythtv_cmake_output but I intend
>> to copy the content of the my_mythtv_cmake_output directory to /usr then I
>> need to add -DMYTH_RUN_PREFIX=/usr??
>>
>> Jim A
>>
>>
>
> Yes, in this case you need both prefixes.
>
> Roland
>
>

Okay, I'll test building with both prefixes on my next test.  For now I was
successful with using sudo and -DCMAKE_INSTALL_PREFIX=/usr

Jim A
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