m4/mbrtowc.m4

   1 #serial 4
   2
   3 dnl From Paul Eggert
   4
   5 AC_DEFUN([jm_FUNC_MBRTOWC],
   6 [
   7   AC_CACHE_CHECK([whether mbrtowc and mbstate_t are properly declared],
   8     jm_cv_func_mbrtowc,
   9     [AC_TRY_LINK(
  10        [#include <wchar.h>],
  11        [mbstate_t state; return ! (sizeof state && mbrtowc);],
  12        jm_cv_func_mbrtowc=yes,
  13        jm_cv_func_mbrtowc=no)])
  14   if test $jm_cv_func_mbrtowc = yes; then
  15     AC_DEFINE(HAVE_MBRTOWC, 1,
  16       [Define to 1 if mbrtowc and mbstate_t are properly declared.])
  17   fi
  18 ])