If a debug image is created using IMAGE_GEN_DEBUGFS = "1" and the debug split style is set to generate both -dbg and -src packages via PACKAGE_DEBUG_SPLIT_STYLE = "1", only the -dbg packages are placed in the debug image. The source packages should also be included so that the debug image can be used for debugging like the other debug split styles (e.g. ".debug", "debug-file-directory")
http://lists.openembedded.org/pipermail/openembedded-core/2018-September/156133.html
Merged in oe-core 5fc7fbc10bbd3a54df16db275ecd6080bc58f19e.