--->  Fetching sbcl
--->  Attempting to fetch sbcl-1.0.29-source-r2.tar.bz2 from http://internap.dl.sourceforge.net/sbcl
--->  Verifying checksum(s) for sbcl
--->  Extracting sbcl
--->  Applying patches to sbcl
--->  Configuring sbcl
--->  Building sbcl
Error: Target org.macports.build returned: can't read "host_lisp": no such variable
Error: The following dependencies failed to build: sbcl tk Xft2 xrender xorg-renderproto tcl xorg-libXScrnSaver xorg-libXext xorg-scrnsaverproto
Error: Status 1 encountered during processing.
JoanMacBookPro:~ JoanRoughgarden$ 
JoanMacBookPro:~ JoanRoughgarden$ sudo port install maxima
Password:
--->  Computing dependencies for maxima
--->  Building sbcl
Error: Target org.macports.build returned: can't read "host_lisp": no such variable
Error: The following dependencies failed to build: sbcl tk Xft2 xrender xorg-renderproto tcl xorg-libXScrnSaver xorg-libXext xorg-scrnsaverproto
Error: Status 1 encountered during processing.
JoanMacBookPro:~ JoanRoughgarden$