how to get -base to link against ffcall instead of libffi

[Sebastian Reitenbach]

Hi,

on the sparc64, I thought I give ffcall a try, but since an hour now, I kind of 
fail to do so.

With ffi.h in place, it always picks up libffi, when I remove ffi.h, then 
configure stops with this warning.
The ffcall headers are in /usr/local/include and the library in /usr/local/lib, 
the same place where libffi is.

I tried:
./configure --disable-libff --enable-ffcall

and also ./configure --disable-libff --enable-ffcall=yes.

and also fiddling around with the ./configure script, hardcoding that I want to 
use ffcall, but nothing did helped so far.

anything I'm doing wrong here?

Sebastian