Can't build on Plasma 6.1.5

[Pauldb8]

Hello,

I'm using branch plasma6 trying to build on my Kubuntu 24.10.
However I get the following problem, after git clone, installing deps, and checkout plasma6 branch:

(base) [pauldb@pauldb-desktop:~/Downloads/LightlyShaders-plasma6]$ mkdir qt6build; cd qt6build; cmake ../ -DCMAKE_INSTALL_PREFIX=/usr && make && sudo make install

-- The C compiler identification is GNU 14.2.0
-- The CXX compiler identification is GNU 14.2.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Installing in the same prefix as Qt, adopting their path scheme.
fatal: ni ceci ni aucun de ses répertoires parents (jusqu'au point de montage /) n'est un dépôt git
Arrêt à la limite du système de fichiers (GIT_DISCOVERY_ACROSS_FILESYSTEM n'est pas défini).
fatal: ni ceci ni aucun de ses répertoires parents (jusqu'au point de montage /) n'est un dépôt git
Arrêt à la limite du système de fichiers (GIT_DISCOVERY_ACROSS_FILESYSTEM n'est pas défini).
-- Looking for __GLIBC__
-- Looking for __GLIBC__ - found
-- Performing Test _OFFT_IS_64BIT
-- Performing Test _OFFT_IS_64BIT - Success
-- Performing Test HAVE_DATE_TIME
-- Performing Test HAVE_DATE_TIME - Success
-- Found OpenGL: /usr/lib/x86_64-linux-gnu/libOpenGL.so
-- Found WrapOpenGL: TRUE
-- Found XKB: /usr/lib/x86_64-linux-gnu/libxkbcommon.so (found suitable version "1.6.0", minimum required is "0.5.0")
-- Found WrapVulkanHeaders: /usr/include
-- Performing Test HAVE_STDATOMIC
-- Performing Test HAVE_STDATOMIC - Success
-- Found WrapAtomic: TRUE
-- Found KF6Config: /usr/lib/x86_64-linux-gnu/cmake/KF6Config/KF6ConfigConfig.cmake (found version "6.6.0")
-- Found KF6ConfigWidgets: /usr/lib/x86_64-linux-gnu/cmake/KF6ConfigWidgets/KF6ConfigWidgetsConfig.cmake (found version "6.6.0")
-- Found KF6CoreAddons: /usr/lib/x86_64-linux-gnu/cmake/KF6CoreAddons/KF6CoreAddonsConfig.cmake (found version "6.6.0")
-- Found KF6Crash: /usr/lib/x86_64-linux-gnu/cmake/KF6Crash/KF6CrashConfig.cmake (found version "6.6.0")
-- Found KF6GlobalAccel: /usr/lib/x86_64-linux-gnu/cmake/KF6GlobalAccel/KF6GlobalAccelConfig.cmake (found version "6.6.0")
-- Found Gettext: /usr/bin/msgmerge (found version "0.22.5")
-- Found KF6I18n: /usr/lib/x86_64-linux-gnu/cmake/KF6I18n/KF6I18nConfig.cmake (found version "6.6.0")
-- Found X11: /usr/include
-- Looking for XOpenDisplay in /usr/lib/x86_64-linux-gnu/libX11.so
-- Looking for XOpenDisplay in /usr/lib/x86_64-linux-gnu/libX11.so - found
-- Looking for gethostbyname
-- Looking for gethostbyname - found
-- Looking for connect
-- Looking for connect - found
-- Looking for remove
-- Looking for remove - found
-- Looking for shmat
-- Looking for shmat - found
-- Found KF6KIO: /usr/lib/x86_64-linux-gnu/cmake/KF6KIO/KF6KIOConfig.cmake (found version "6.6.0")
-- Found KF6Service: /usr/lib/x86_64-linux-gnu/cmake/KF6Service/KF6ServiceConfig.cmake (found version "6.6.0")
-- Found KF6Notifications: /usr/lib/x86_64-linux-gnu/cmake/KF6Notifications/KF6NotificationsConfig.cmake (found version "6.6.0")
-- Found KF6WidgetsAddons: /usr/lib/x86_64-linux-gnu/cmake/KF6WidgetsAddons/KF6WidgetsAddonsConfig.cmake (found version "6.6.0")
-- Found KF6WindowSystem: /usr/lib/x86_64-linux-gnu/cmake/KF6WindowSystem/KF6WindowSystemConfig.cmake (found version "6.6.0")
-- Found KF6GuiAddons: /usr/lib/x86_64-linux-gnu/cmake/KF6GuiAddons/KF6GuiAddonsConfig.cmake (found version "6.6.0")
-- Found KF6KCMUtils: /usr/lib/x86_64-linux-gnu/cmake/KF6KCMUtils/KF6KCMUtilsConfig.cmake (found version "6.6.0")
-- Found KF6: success (found suitable version "6.6.0", minimum required is "5.240.0") found components: Config ConfigWidgets CoreAddons Crash GlobalAccel I18n KIO Service Notifications Service WidgetsAddons WindowSystem GuiAddons KCMUtils
-- Found epoxy: /usr/lib/x86_64-linux-gnu/libepoxy.so (found version "1.5.10")
-- Found XCB_XCB: /usr/lib/x86_64-linux-gnu/libxcb.so (found version "1.17.0")
-- Found XCB: /usr/lib/x86_64-linux-gnu/libxcb.so (found version "1.17.0") found components: XCB
-- Found Wayland_Server: /usr/lib/x86_64-linux-gnu/libwayland-server.so (found version "1.23.0")
-- Found Wayland: /usr/lib/x86_64-linux-gnu/libwayland-server.so (found version "1.23.0") found components: Server
-- Performing Test COMPILER_HAS_HIDDEN_VISIBILITY
-- Performing Test COMPILER_HAS_HIDDEN_VISIBILITY - Success
-- Performing Test COMPILER_HAS_HIDDEN_INLINE_VISIBILITY
-- Performing Test COMPILER_HAS_HIDDEN_INLINE_VISIBILITY - Success
-- Performing Test COMPILER_HAS_DEPRECATED_ATTR
-- Performing Test COMPILER_HAS_DEPRECATED_ATTR - Success
CMake Error at src/blur/CMakeLists.txt:14 (kwin_add_builtin_effect):
  Unknown CMake command "kwin_add_builtin_effect".


-- Configuring incomplete, errors occurred!

I tried copying the upstream blur folder and replacing it from here
https://invent.kde.org/plasma/kwin/-/tree/v6.1.5/src/plugins/blur?ref_type=tags

Looked like it improved the situation, it was a different error before, but still I'm blocked.

Any help would be greatly appreciated !
Paul.

[AldanTanneo]

You could try building this commit from my fork, it built for me on KDE 6.1.5. For KDE 6.2, further commits synced the blur effect with the upstream KWin version.