when I type make install, I get the following error:
/bin/sh ./libtool --mode=install
/projects/gnu/sparc-sun-solaris2.6/bin/ginstall -c libmk4.la /usr/tcl84/lib
/projects/gnu/sparc-sun-solaris2.6/bin/ginstall -c .libs/libmk4.lai
/usr/tcl84/lib/libmk4.la
/projects/gnu/sparc-sun-solaris2.6/bin/ginstall: cannot stat
`.libs/libmk4.lai': No such file or directory
*** Error code 1
make: Fatal error: Command failed for target `install-mk'

This is also the case on Mac OS X 10.2.5.
/bin/sh ./libtool --mode=install /usr/bin/install -pc libmk4.la
/Users/david/FlightGear/FlightGear-CVS/lib
/usr/bin/install -pc .libs/libmk4.lai
/Users/david/FlightGear/FlightGear-CVS/lib/libmk4.la
/usr/bin/install: .libs/libmk4.lai: No such file or directory
make: *** [install-mk] Error 71

There is a typo in line 4635 of the generated libtool: a spurious 'i' at
the end of the line. libtool executes properly when this is removed.
The spurious 'i' appears to come from line 4346 of
unix/scripts/ltmain.sh. There is also an 'i' at the end of line 3962,
though I do not know if it is also spurious. The build succeeds after
removing both, make distclean, and make && make test && make install.
At the end, though, I get "libtool: install: warning: remember to run
`libtool --finish '" which I have not seen before.