How to force comipler generate LCALL and LJMP for all funciton call?

I am writing a library for 8051 mcu. this library call some outside functions, i mean some routine defined by user, I am not sure how far those codes will be seperated from my library in code space, to...
How to force comipler generate LCALL and LJMP for all funciton call?

I am writing a library for 8051 mcu. this library call some outside functions, i mean some routine defined by user, I am not sure how far those codes will be seperated from my library in code space, to...
Calling function from library without lcall.

I have been programming in ASM some project, which, together with the source code will have to transfer to the customer. But this project contains some of the functions source code which I do not want...
USING LCALL from another asm file.

Q) Which Register should be PUSHed into the stack, when calling a Functin in another asm file using LCALL?
Calling function from library without lcall.

I have been programming in ASM some project, which, together with the source code will have to transfer to the customer. But this project contains some of the functions source code which I do not want...