$host_cpu -> $target_cpu in configure?

There are a few places in configure and the makefiles that are looking
at $host_cpu to decide what to do.  As far as I can tell, almost all of
them are wrong and should be looking at $target_cpu instead.  (The
lack of complaints indicates that nobody is trying very hard to test
cross-compilation.)

I'm not too sure about this case in makefiles/Makefile.hpux:

ifeq ($(host_cpu), ia64)
   DLSUFFIX = .so
else
   DLSUFFIX = .sl
endif

Does HPUX even support cross-compiling, and if so what shlib extension
do you get in that case?

The other references seem definitely wrong ...

            regards, tom lane