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

[Peter Bennett]

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 
> <http://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 
> <http://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
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