self compile with SSA simplifier

[Matthew Fluet]

> > BTW, does anyone know how to get SML/NJ 110.9.1 to compile on a "current"
> > Linux distro (RedHat 7.1, Mandrake 8.1)?  I upgraded some stuff and need
> > to rebuild cmcat, but 110.9.1 always dies during an install.  It's from
> > Oct. 1998, so maybe there are (g)libc problems?
> 
> Hmm.  I have 110.9.1 running on my 7.1 machine.  I remember at some
> point seeing compile-time errors while compiling the runtime system
> (is this what you meant by died?), which were pretty easily fixed by
> commenting out some code (maybe in mach/signal-sysdep.h?).

No, I know how to fix that error.  What I get is the following:

...
[Loading PervEnv/Posix/posix-procenv.sml.bin]
/home/fluet/smlnj/smlnj-110.9.1-test/bin/.run/run.x86-linux: Fatal error
-- Uncaught exception SysErr with <unknown> raised at <sysconf.c>

!!! unable to build SML heap image (sml.x86-linux)


I ran into this over the summer on my box at InterTrust (as did Neal when
he was setting up for ICFP prog. contest); we both "solved" the problem by
copying your binaries over.  

Anyways, I got around it by the same means (copying the binaries from an
install that was working), but I was wondering if anyone had gotten it to
build.