git/make for windows expansion of relative paths

Hello,

As the subject states, that's my general question: how can it be done? I ha=
ve a relative path which I need to pass along to a utility program in terms=
 of its absolute path.

Thus far, attempts to do so using realpath, abspath, and a plethora of vari=
ants have been foiled and do not seem to work properly. I bumped into one f=
orum post or another that seemed to indicate that make 3.81 (?) may be brok=
en for Windows along these lines, but I cannot say for certain.

As far a I know, I am using GNU make v3.80 as exposed by Git for Windows v2=
.12.0.

Thanks!

Regards,

Michael Powell