This line in Makefile.in
ln -s ${libdir} ${DESTDIR}${datadir}/examples/gtkada --force
uses the Linux-specific option --force (at the end of the command, too, which is highly unusual).
This option isn’t available on macOS: please change to the more standard
ln -s -f ${libdir} ${DESTDIR}${datadir}/examples/gtkada
This line in Makefile.in
uses the Linux-specific option
--force(at the end of the command, too, which is highly unusual).This option isn’t available on macOS: please change to the more standard