Error while installing mit-scheme

[Peng Yu]

I run 'sudo port install mit-scheme' but it fails with some errors. I
then run the command again. It gives me the following errors. Could
somebody let me know how to fix the errors? Can I just delete the
directory '/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_lang_mit-scheme/work/mit-scheme-c-20080130'?

$sudo port install mit-scheme
--->  Computing dependencies for mit-scheme
--->  Building mit-scheme
NError: Target org.macports.build returned: shell command " cd
"/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_lang_mit-scheme/work/mit-scheme-c-20080130/src"
&& etc/make-liarc.sh --prefix=/opt/local " returned error 1
Command output: checking gdbm.h usability... no
checking gdbm.h presence... no
checking for gdbm.h... no
checking db.h usability... yes
checking db.h presence... yes
checking for db.h... yes
checking for db_create in -ldb-4... no
checking for pg_config... no
checking libpq-fe.h usability... no
checking libpq-fe.h presence... no
checking for libpq-fe.h... no
checking for dlopen... yes
checking for native-code support... yes, using portable C code
configure: creating ./config.status
config.status: creating liarc-cc
config.status: creating liarc-ld
config.status: creating Makefile
config.status: creating config.h
config.status: config.h is unchanged
config.status: linking ./cmpauxmd/c.c to cmpauxmd.c
config.status: linking ./cmpintmd/c.h to cmpintmd.h
config.status: linking ./cmpintmd/c.c to cmpintmd.c
config.status: linking ./cmpintmd/c-config.h to cmpintmd-config.h
configure: configuring in compiler
configure: running /bin/sh './configure'
--prefix=/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_lang_mit-scheme/work/mit-scheme-c-20080130/src/boot-root
 '--prefix=/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_lang_mit-scheme/work/mit-scheme-c-20080130/src/boot-root'
'--enable-native-code=c' --cache-file=/dev/null --srcdir=.
rm -f machine
ln -s machines/C machine
ln -s machine/make.com .
ln: ./make.com: File exists
configure: error: /bin/sh './configure' failed for compiler

Error: Status 1 encountered during processing.