I tried specifying

FP_DEF_TEMPLATE

with a .def file that had an appropriate

DIEAREA

configuration, but that seems to be ignored in favor of OpenLANE's

DIE_AREA

configuration.

Could you share the DEF file that you're trying to use as a template?

It would be something like this:

VERSION 5.8 ;
DIVIDERCHAR "/" ;
BUSBITCHARS "[]" ;
DESIGN macro_cell ;
UNITS DISTANCE MICRONS 1000 ;

DIEAREA ( 0 0 ) ( 0 150000 ) ( 150000 150000 ) ( 150000 75000 ) ( 75000 75000 ) ( 75000 0 );

PINS [...] ;
END PINS
END DESIGN

@Will R: I see. Nope, that's no supported by the OpenROAD tools so far, feel free to start an issue on their repo about it though.

Okay, thank you for letting me know. It sounds like we will be able to use routing obstructions and placement macros to define our shapes, but I'll consider asking for rectilinear outline support if there aren't any existing issues on the topic.