On Athena 9.4 (rhel4):
./configure --prefix=/afs/sipb.mit.edu/project/git/builds/curl-7.19.7 --exec-prefix=/afs/sipb.mit.edu/project/git/builds/curl-7.19.7/arch/i386_rhel4 --with-gssapi=/usr/athena
make
make install

On Athena 9.4 (solaris, sun.dialup):
./configure --prefix=/afs/sipb.mit.edu/project/git/builds/curl-7.19.7 --exec-prefix=/afs/sipb.mit.edu/project/git/builds/curl-7.19.7/arch/sun4x_510 --with-gssapi=/usr/athena --enable-ldaps
make
make install