# Help with building bigscreen

**URL:** <https://discuss.kde.org/t/help-with-building-bigscreen/49977>\
**Category:** Development\
**Tags:** bigscreen\
**Created:** [September 6, 2026, 7:04am UTC](https://discuss.kde.org/t/help-with-building-bigscreen/49977 "2026-09-06T07:04:19Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![MagmaMouse](https://discuss-cdn.kde.org/letter_avatar_proxy/v4/letter/m/5f9b8f/32.png) [@MagmaMouse](https://discuss.kde.org/u/MagmaMouse)\
**Post date:** [September 6, 2026, 7:04am UTC](https://discuss.kde.org/t/help-with-building-bigscreen/49977/1 "2026-09-06T07:04:19Z")

</div>

I need help with building plasma-bigscreen. its throwing `Exec format error` when trying to execute `qhelpgenerator` during the `extra-cmake-modules`. What’s weird is it was able to get through that before I corrected the Qt path in .config but now it can’t.

I’m on Raspberry Pi OS Lite on a Raspberry Pi 5

---

<div class="post-metadata">

**Author:** ![meven](https://discuss-cdn.kde.org/user_avatar/discuss.kde.org/meven/32/1748_2.png) [@meven](https://discuss.kde.org/u/meven)\
**Post date:** [September 6, 2026, 7:05am UTC](https://discuss.kde.org/t/help-with-building-bigscreen/49977/2 "2026-09-06T07:05:56Z")

</div>

> [@MagmaMouse](#):
>
> I need help with building plasma-bigscreen. its throwing `Exec format error` when trying to execute `qhelpgenerator` during the `extra-cmake-modules`.

Can you share more details, like the full error, it probably mentions a file.

Did you try a clean build ? `kde-builder --refresh-build`

---

<div class="post-metadata">

**Author:** ![MagmaMouse](https://discuss-cdn.kde.org/letter_avatar_proxy/v4/letter/m/5f9b8f/32.png) [@MagmaMouse](https://discuss.kde.org/u/MagmaMouse)\
**Post date:** [September 6, 2026, 7:24am UTC](https://discuss.kde.org/t/help-with-building-bigscreen/49977/3 "2026-09-06T07:24:53Z")

</div>

–refresh-build didn’t help

the full log it spat out was:

```auto
# kde-builder runing: 'cmake' '--build' '.' 
# from directory: home/hhmc/kde/build/extra-cmake-nodules
# with environment: home/hhmc/kde/build/extra-cmake-modules/kde-builder.env
[1/3] sphinx-build html: see /hone/hhmc/kde/build/extra-cmake-modules/docs/build-html.log 
[2/3] sphinx-build man: see /hone/hhnc/kde/bui ld/extra-cnake-nodules/docs/build-man. log 13/31 sphinc-build qthelp: see hone/hhnc /kde/build/extra-cnake-nodules/docs/bulld-qthelp.log 
FAILED: docs/doc_format_qthelp home/hhmc/kde/build/extra-cmake-nodules/docs/doc_format_qthelp
cd home/hhmc/kde/build/extra-cmake-modules/docs && /usr/bin/sphinx-build -D man_make_section_directory=0 -c /homa/hhmc/kde/build/extra-cmake-modules/docs -d /home/hhmc/kde/build/extra-cmake-modules/docs/doctrees -b qthelp /home/hhmc/kde/src/extra-cmake-modules/docs /home/hhmc/kde/build/extra-cmake-modules/docs/qthelp > build-qthelp.log && home/hhmc/Qt/6.9.3/gcc_64/libexec/qhelpgenerator /hone/hhmc/kde/build/extra-cmake-modules/docs/qthelp/ExtraCMakeModules.qhcp
bin/sh: 1: /home/hhmc/Qt/6.9.3/gcc_64/libexec/qhelpgenerator: Exec format error ninja: build stopped: subcommand failed.
exit code was: 256

```