--- configure.ac.bak	Fri Oct 24 17:58:56 2003
+++ configure.ac	Fri Oct 24 18:42:38 2003
@@ -900,8 +900,16 @@
     LIBS="-L${ffcall_libdir} $LIBS"
 fi
 
-AC_CHECK_HEADER(ffi.h, , enable_libffi=no)
+AC_MSG_CHECKING("ffcall presence")
 AC_CHECK_HEADERS(callback.h, , enable_ffcall=no)
+if test $enable_ffcall = no; then
+    AC_WARNING("ffcall not found... looking for ffi presence")
+    enable_libffi = yes # try this instead!
+fi
+AC_CHECK_HEADER(ffi.h, , enable_libffi=no)
+if test $enable_ffi = no; then
+    AC_WARNING("ffi not found")
+fi
 
 have_forward_hook=yes
 AC_MSG_CHECKING("for forwarding callback in runtime")
@@ -912,7 +920,6 @@
   enable_ffcall=no
 fi
 
-AC_MSG_CHECKING("FFI library usage")
 WITH_FFI=none
 if test $enable_libffi = yes; then
   AC_DEFINE(USE_LIBFFI,1,