[Craft] [Bug 426264] Cannot build digikam using Craft on Windows 10: too long command lines

[Hannah von Reth]

https://bugs.kde.org/show_bug.cgi?id=426264

--- Comment #1 from Hannah von Reth <vonreth at kde.org> ---
(In reply to mrbus from comment #0)
> Created attachment 131457 [details]
> Craft output
> 
> SUMMARY
> Cannot build `digikam` using Craft on Windows 10: too long command lines.
> I tried to build it with different settings of Craft
> (CraftRoot/etc/CraftSettings.ini).
> Set `UseNinja` to `False` or `True`, set `MakeProgram` to `jom` or `nmake`,
> in any case the Craft output is the same (see attachment).
> (This is not the whole output, but we can see that command line of moc.exe
> is longer than 32767 characters which is command line length limit of
> Windows).
> 
> Then I tried to shorten command lines by installing Craft to shorter
> directory, `C:\C` instead of `C:\CraftRoot`.
Please try to set
https://invent.kde.org/packaging/craft/-/blob/master/CraftSettings.ini.template#L116
to C:\_
> Command line becomes shorter by about 3800 characters but still exceeds the
> limit.
> With UseNinja = True, MakeProgram = jom, I get: `ninja: fatal:
> CreateProcess: The parameter is incorrect (is the command line too long?)`
> and with other settings I get the error mentioned in attachment.
> 
> Is there a way to build digikam for Windows using Craft... or at least some
> other way? Can I shorten command line even more?
> 
> STEPS TO REPRODUCE
> 1. Install Craft to C:\C
> 2. Start Craft and execute `craft digikam >output.txt`
> 3. You may receive an error related to opencv (another issue?) like "ninja:
> error: 'opencv_imgcodecs-NOTFOUND'". It can be worked around:
> 3a. Download opencv 3.3.0 from sourceforge.
> 3b. Add environment variable `OpenCV_DIR` and set it's value to
> path-to-opencv\build\x64\vc14\lib (path may differ; use the folder that
> contains OpenCVConfig.cmake file).
Please don't do that, craft provides opencv, if it fails to find that, check
why it fails, but pls never try mixing with external 3rdparty builds.
> 3c. Restart Craft.
> 
> OBSERVED RESULT
> Shown in attachment
> 
> 
> EXPECTED RESULT
> `digikam` successfully built
> 
> 
> SOFTWARE/OS VERSIONS
> Windows: 10
> ADDITIONAL INFORMATION
> I'm not sure should I report this issue to Craft or to digikam.

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