Enable building of SDK

Packages describing “sdk” as local USE flag

Package “sdk” Flag Description
app-emulation/virtualbox Enable building of SDK
dev-db/oracle-instantclient Header files and an example makefile for developing Oracle applications
games-fps/eduke32 Install the SDK files.
media-sound/apulse Install PulseAudio headers and pkg-config files. Be aware apulse is not a full PulseAudio replacement by design and some functionality may be missing.
kde-plasma/plasma-meta Pull in kde-plasma/plasma-sdk for Plasma development
kde-apps/kde-apps-meta Pull in developer-specific meta-packages

All packages providing a “sdk” USE flag (4)