1#serial 4 2 3dnl From Paul Eggert 4 5AC_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]) 19