Make your own slackbuild script using some template as I do for all my builds.

Also, take a look at how Arch Linux build the package you want:

https://archlinux.org/packages/

Search there for kdenlive, click in package name, then click in the right part where it says "Source Files"
and finally click in PKGBUILD (this is the Arch package build script).


Kdenlive sources:

Master version:
https://invent.kde.org/multimedia/kd.../-/tree/master

23.08.5 version:
https://invent.kde.org/multimedia/kd...23.08.5.tar.gz


PD:

Something "generic" to add to your build script to build with cmake:

cmake -S . -B build \
-D CMAKE_C_FLAGS="-O2 -fPIC" \
-D CMAKE_CXX_FLAGS="-O2 -fPIC" \
-D CMAKE_INSTALL_PREFIX=/usr \
-D CMAKE_INSTALL_LIBDIR=lib64 \
-D LIB_SUFFIX="64" \
-D SYSCONFDIR=/etc \
-D MANDIR=/usr/man \
-D DOCDIR=/usr/doc/$NAME-$VERSION \
-D CMAKE_BUILD_TYPE=Release \

cmake --build build
DESTDIR=$PKG cmake --install build


Replace $NAME, $VERSION, $PKG, etc. with appropriate var names used in your script.

2 members found this post helpful.

In directory source/kde/kde/cmake, copy the default file 'cmake' to 'kdenlive' and edit it.

1 members found this post helpful.

Thanks, good idea. I usually fix available slackbuild script for newer versions with the guidance of arch's pkgbuild. I guess this building process for kdenlive in Slackware is so confusing that it will be easier to create a slackbuild script from scratch altogether.

Ah! Nice, thanks!
I guess kdenlive is using some generic configure options, there are no specific file with instructions for it. I even tried find kde -iname "*kdenlive*" -type f but the files found are just mirrorlists, the slack-desc, a build checking flag for the script and the source files.

btw, cmake -L in sources tree lists build options

1 members found this post helpful.

Yes, the file source/kde/kde/cmake/cmake is exactly the generic one which is used if there is not yet file source/kde/kde/cmake/kdenlive. That's why you need to copy source/kde/kde/cmake/cmake to source/kde/kde/cmake/kdenlive and edit it.

1 members found this post helpful.

Sorry, I have misread the "to" with "and". I'll try that, thanks again.

I'm closing this since the main question was answered (how the rebuild, configure, etc kdenlive). Just a feedback: there is no special flag to set during compilation time for enabling features. Everything is detected at runtime, on startup. I've tried to recompile mlt, which is crucial for this detection apparently, but eventually I discovered that aac codec can be detected after clicking Menu Settings > Run Config Wizard. Tracking plugin won't work because it depends on OpenCV, but current ffmpeg is incompatible with current opencv, so you would have to downgrade it. Same thing for plugins which depends on lensfun, you'll have to recompile ffmpeg but against a newer lensfun than the current shipped.

So, I will have to stick to the official AppImage instead of the system version. Thanks everyone for the help.