Re: updated win32 macro

[Akim Demaille]

| The developer could use
| AC_PROG_CC_WIN32
| AC_CHECK_HEADER([windows.h])
| 
| and then (test in the configure script) / (surround the win32 code with
| #IF_HAVE_WINDOWS_H), but I thought  giving the developer a clear
| mechanism would be nice.

Then it seems to me that the interface is not right.  Maybe something
like

AC_HEADER_WINDOWS

which would do the whole thing might be what you need.  Also, why do
you set CC and not CFLAGS (and maybe LDFLAGS)?  This is a tricky
question, I often wondered, not only in the present case.