Tips for porting to new platform

Hello,
 I am working on an academic project
(http://www.rites.uic.edu/~solworth/ethos.html) where we are planning
to use ML on a non-standard platform.  I am looking into what will be
required to port SMLNJ to this platform.  At this point, we are
planning to run the compiler on a linux system and only run the
resulting executable itself on the new platform.  I am also not
concerned with supporting any additional libraries
(POSIX-compatibility, etc) at this time although some of that may come
eventually.

 As a result, I believe that I can just focus on porting ML's runtime
library that is written in C.  Is that true?  If not, where else are
changes necessary for porting to a new platform?  If I am correct that
only the runtime lib needs changes, do you have tips about where to
look before I dive into the code?  Our target platform does not
support the C std library.  As a result, we'll need to change places
where the runtime uses the C stdlib.  I would appreciate any advice
you could give me on this task.  Thanks in advance, let me know if I
was unclear (or just wrong) about anything.  Thanks again.

David Thulson

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