I am trying to port the entire Apertium ecosystem but it looks like all of the packages(nearly 500+) has the same line in the Makefile.am file.

pkgconfigdir = $(prefix)/share/pkgconfig

I have already ported one dictionary when I am manually doing a post-patch. I know that there is a requirement for >= X number for making changes to this file but if we can change this now I won't have to redo this again for 500+ ports which I am planning to commit.