Not all dependencies are built
kdesrc-build --list-build dolphin
list some dependencies:
── extra-cmake-modules
── kcoreaddons
── karchive
── kconfig
── ki18n
── plasma-wayland-protocols
── kdoctools
── kwidgetsaddons
── polkit-qt-1
── kcodecs
── kauth
── kguiaddons
── kwindowsystem
── kconfigwidgets
── kdbusaddons
── kcompletion
── kcrash
── kiconthemes
── sonnet
── kglobalaccel
── kitemviews
── ktextwidgets
── gpgme : master
── qca
── knotifications
── kservice
── kxmlgui
── kbookmarks
── kjobwidgets
── kwallet
── solid
── kio
── poppler : master
── taglib : master
── kpackage
── kfilemetadata
── kidletime
── attica
── baloo
── kdeclarative
── kirigami
── syndication
── dolphin
However it's missing some kf5 dependencies, like kcmutils, knewstuff, and kparts.
kdesrc-build --dependency-tree dolphin
includes them, but they are marked as "(not built)" for no apparent reason