This version of Unity is unsupported.
Method group is Obsolete

AssemblyBuilder.additionalDefines

Obsolete This feature is being deprecated and will be removed in the future. Similar functionality can be achieved using the Roslyn compiler. public string[] additionalDefines;

Description

Additional #define directives passed to compilation of the assembly.

By default the same #define directives that are added to scripts inside the Assets folder are added the assembly build. This property allows to add additional #define directives.

The default #define directives are in part controlled by AssemblyBuilder.flags, AssemblyBuilder.buildTarget and AssemblyBuilder.buildTargetGroup.

Additional resources: AssemblyBuilder.defaultDefines.