The errors preceding this notice were:
Making all for tool autogsdoc...
Linking tool autogsdoc ...
../Source/shared_obj/libgnustep-base.so: undefined reference to
`libiconv_open'
../Source/shared_obj/libgnustep-base.so: undefined reference to
`libiconv_close'
../Source/shared_obj/libgnustep-base.so: undefined reference to
`libiconv'
I have libiconv 1.9.1 installed, which seems to be the latest one
available from gnu.org. This install was attmepted using the
InstallGNUstep script, I shall try build GNUstep from scratch.