It appears that there is something wrong with the --with-include-zlib
code.
./configure --with-included-zlib
.....
grep ZLIBS config.status
s%@ZLIBS@%%g
This seems to be because of the following test from configure.in
if test "use_local_zlib" = yes ; then
^
which is likely to fail most of the time :) I suggest adding a $
Soren