m4/mbswidth.m4

   1 #serial 8
   2
   3 dnl autoconf tests required for use of mbswidth.c
   4 dnl From Bruno Haible.
   5
   6 AC_DEFUN([jm_PREREQ_MBSWIDTH],
   7 [
   8   AC_CHECK_HEADERS(wchar.h wctype.h)
   9   AC_CHECK_FUNCS(isascii iswcntrl iswprint mbsinit wcwidth)
  10   jm_FUNC_MBRTOWC
  11
  12   AC_CACHE_CHECK([whether wcwidth is declared], ac_cv_have_decl_wcwidth,
  13     [AC_TRY_COMPILE([
  14 /* AIX 3.2.5 declares wcwidth in <string.h>. */
  15 #if HAVE_STRING_H
  16 # include <string.h>
  17 #endif
  18 #if HAVE_WCHAR_H
  19 # include <wchar.h>
  20 #endif
  21 ], [
  22 #ifndef wcwidth
  23   char *p = (char *) wcwidth;
  24 #endif
  25 ], ac_cv_have_decl_wcwidth=yes, ac_cv_have_decl_wcwidth=no)])
  26   if test $ac_cv_have_decl_wcwidth = yes; then
  27     ac_val=1
  28   else
  29     ac_val=0
  30   fi
  31   AC_DEFINE_UNQUOTED(HAVE_DECL_WCWIDTH, $ac_val,
  32     [Define to 1 if you have the declaration of wcwidth(), and to 0 otherwise.])
  33
  34   AC_TYPE_MBSTATE_T
  35 ])