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AC_MSG_CHECKING([for FFI support])
FFI_DIR=${topdir}/platforms/unix/plugins/SqueakFFIPrims
AC_ARG_WITH(ffi,
[ --with-ffi=ffi use FFI support [default=auto]],
[with_ffi="$withval"],
[with_ffi="auto"])
if test "${with_ffi}" != "auto"; then
ffi_cpu_abi="${with_ffi}"
else
ffi_cpu_abi=`${FFI_DIR}/ffi-config ${cfgdir} ${FFI_DIR} -cpu-abi`
fi
if test "${ffi_cpu_abi}" != "any-libffi"; then
AC_MSG_RESULT([${ffi_cpu_abi}])
else
AC_MSG_RESULT([requires libffi])
ffi_cpu_abi=any-libffi
AC_CHECK_HEADER(ffi.h,
AC_CHECK_LIB(ffi, ffi_call,
AC_PLUGIN_USE_LIB(ffi),
AC_PLUGIN_DISABLE),
AC_PLUGIN_DISABLE)
fi
FFI_C=${ffi_cpu_abi}
FFI_S=${ffi_cpu_abi}-asm
FFI_O="${FFI_C}\$o ${FFI_S}\$o"
AC_SUBST(FFI_DIR)
AC_SUBST(FFI_C)
AC_SUBST(FFI_S)
AC_SUBST(FFI_O)
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