While running
./configure --prefix=/mingw
on a MinGW/MSYS system for a library I had previously run
\'./configure --pref
There is no standard unfortunately, this is one of the perils of installing from source. Some Makefiles will include an "uninstall", so
make uninstall
from the source directory may work. Otherwise, it may be a matter of manually undoing whatever the make install did.
make clean usually just cleans up the source directory - removing generated/compiled files and the like, probably not what you're after.