Specify byproducts for ExternalProject_Add call
This is required for Ninja to pick up the correct depedency relation. Otherwise native_katehighlightingindexer won't be built before it's needed when cross-compiling and using Ninja
This is required for Ninja to pick up the correct depedency relation. Otherwise native_katehighlightingindexer won't be built before it's needed when cross-compiling and using Ninja