Software from Source/fr
Installation de KDE 4 - Obtenir KDE 4
Puis compiler KDE à partir des sources ?
You can follow the guide found in Techbase - Getting Started.
How do I build KDE software? Where do I go if I encounter build problems?
Guides to building KDE can be found in Techbase - Getting Started. Please read and follow them very carefully. You can ask questions in the usual support channels such as IRC, mailing lists, or forums.