Oddity building 3.2.2 on AIX 4.3.2

[Albert Chin]

I'm attempting to build 3.2.2 on AIX 4.3.2 with the AIX compiler and
something odd is happening. Between the 3.2.1 and 3.2.2 releases, the
following was added to zlib/configure:
  if test -n "$with_cross_host" &&
     test x"$with_cross_host" != x"no"; then
    toolexecdir='$(exec_prefix)/$(target_alias)'
    toolexeclibdir='$(toolexecdir)/lib'
  else
    toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
    toolexeclibdir='$(libdir)'
  fi
  toolexeclibdir=$toolexeclibdir/`$CC -print-multi-os-directory 2>/dev/null || echo .`

On AIX, the following will generate usage output from the C compiler:
  $ /bin/sh
  $ /usr/vac/bin/cc -print-multi-os-directory
The following will print `.':
  $ /bin/sh
  /usr/vac/bin/cc -print-multi-os-directory 2>/dev/null || echo .

However, whenever the above code is run, the output of
toolexeclibdir=$toolexeclibdir/... is *always* the usage output from
the C compiler. This later trips up config.status generating an empty
Makefile. I thought it was a /bin/sh error so upgraded to the latest
bos.rte.shell release (4.3.3.83) but that didn't fix anything.  I'm at
a loss for what's going on.

-- 
albert chin (china@thewrittenword.com)