hello,
I downloaded the source code of qelectroTech0.9 version from the official website
and used QT Creator5.15.2 to open the qelectrotech.pro file for compilation when this problem occurred:

:-1: error: Project ERROR: sqlite3 development package not found.
According to the instructions in the forum <Building QET from source - sqlite3 development package not found>, compile the path of sqlite3 and add it to the directory of the pro file,
and then add the path to the pro file. The test still lacks sqlite3.

so I define it by : #DEFINES += QET_EXPORT_PROJECT_DB, and ,#unix|win32: PKGCONFIG += sqlite3.

Then this happens again when you rebuild: :-1: error: Project ERROR: Unknown module(s) in QT: KWidgetsAddons KCoreAddons.

i found another article on the forum <How can i build in Windows QTcreator: KwidgetAddons KcoreAddons> post, because I am a new graduate, the windows compilation is not familiar, according to the above instructions I have been unable to compile, may I ask how can I build KWidgetsAddons KCoreAddons in QT? Or is there a more detailed way?