Dogcows Code - chaz/tar/blob - m4/mbstate_t.m4

   1 # serial 1
   2
   3 # From Paul Eggert.
   4
   5 # Some versions of BeOS define mbstate_t to be an incomplete type,
   6 # so you can't declare an object of that type.
   7 # Check for this incompatibility with Standard C.
   8
   9 AC_DEFUN(AC_MBSTATE_T_OBJECT,
  10   [AC_CACHE_CHECK([for mbstate_t object type], ac_cv_type_mbstate_t_object,
  11     [AC_TRY_COMPILE([#include <wchar.h>],
  12       [mbstate_t x; return sizeof x;],
  13       ac_cv_type_mbstate_t_object=yes,
  14       ac_cv_type_mbstate_t_object=no)])
  15    if test $ac_cv_type_mbstate_t_object = yes; then
  16      AC_DEFINE(HAVE_MBSTATE_T_OBJECT, 1,
  17                [Define if mbstate_t is an object type.])
  18    fi])