dnl Borrowed from Heimdal, but renamed as I don't think we
dnl should be shipping AC_ macros.

AC_DEFUN([OPENAFS_HAVE_STRUCT_FIELD], [
define(cache_val, translit(ac_cv_type_$1_$2, [A-Z ], [a-z_]))
AC_CACHE_CHECK([for $2 in $1], cache_val,[
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
        $3
        #include <string.h>]],
        [[$1 x; memset(&x, 0, sizeof(x)); x.$2]])],
        [cache_val=yes],
        [cache_val=no])
])
if test "$cache_val" = yes; then
        define(foo, translit(HAVE_$1_$2, [a-z ], [A-Z_]))
        AC_DEFINE(foo, 1, [Define if $1 has field $2.])
        undefine([foo])
fi
undefine([cache_val])
])