-echo '//setting up "target"-named symlinks to designate target architecture'
-sbcl_arch=x86 # (the only possibility supported, at least as of sbcl-0.6.7)
-echo -n ":x86" >> $ltf # (again, the only possibility supported)
+echo //setting up CPU-architecture-dependent information
+# Currently supported: x86 alpha
+sbcl_arch=${SBCL_ARCH:-x86}
+echo -n ":$sbcl_arch" >> $ltf