You have the following two ways to change the stack size: (1) From the IDEU8 menu bar, use [Project] -> [Options] -> [Target Option] -> [General] -> [Link] -> [Stack Size]. (2) From the IDEU8 menu bar, use [Project] -> [Options] -> [Compile/Assemble Option] -> [Code Generation] -> [Compiler] -> [Stack Size].
When you use the above two ways to specify a value in [Stack Size] concurrently, the setting of (1) has higher priority than that of (2).