SDCC 4.3.0 cc1.exe problem

[dzid26]

cc1.exe: error: unrecognized command-line option '--obj-ext=.rel'

It shows up in this CI run:
https://github.com/chgpalmer/TSDZ2-Smart-EBike-1/actions/runs/5979789568/job/16224594796#step:4:21

This is probably because sdcc.exe should be called instead of cc1.exe ??? Or maybe missing dependency: https://sourceforge.net/p/sdcc/discussion/1865/thread/83d2461277/

I don't remember the details, but I think I experienced it and my workaround was to move the environmental path higher on the priority list, (above Mingw or msys or whatever that may contain cc1 compiler - that we don't want to use.)

Alternatively just use SDCC version 4.2.0, which didn't have this problem.