gnustep-base: cross compiler help

[Dennis Leeuw]

Hi all,

I am trying to create a GNUstep setup that support compiling for 
GNU/Linux and for Windows. So you have a cross development platform.

I am as far as trying to build gnustep-base with the cross compiler.

env:
CC=i586-mingw32-gcc
PATH="/usr/GNUstep/System/Library/MinGW/bin:$PATH"

cross compiled and installed in the MinGW dir:
tool chain
zlib
iconv
libxml2
gettext
ffcall

I have configured and installed gnustep-make with mingw32 support.

Using:
../gnustep-base-1.15.2/configure 
--with-default-config=/usr/GNUstep/Local/Configuration/GNUstep.conf 
--host=i586-mingw32

ends with:
checking for ffi.h... no
checking callback.h usability... yes
checking callback.h presence... yes
checking for callback.h... yes
checking for forwarding callback in runtime... yes
checking FFI library usage... none

You do not have either ffcall or libffi installed, or configure needs
--with-ffi-include and/or --with-ffi-library flags so GNUstep can find them
GNUstep requires ffcall or libffi and proper libobjc hooks to do
invocations and DO.
(This does not apply on apple-apple-apple systems where DO is
not compatible with other GNUstep systems.)

What might I be going wrong?

Any pointers are greatly appreciated.

Thanks,

Dennis