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  1. # wint_t.m4 serial 5 (gettext-0.18.2)
  2. dnl Copyright (C) 2003, 2007-2016 Free Software Foundation, Inc.
  3. dnl This file is free software; the Free Software Foundation
  4. dnl gives unlimited permission to copy and/or distribute it,
  5. dnl with or without modifications, as long as this notice is preserved.
  6. dnl From Bruno Haible.
  7. dnl Test whether <wchar.h> has the 'wint_t' type.
  8. dnl Prerequisite: AC_PROG_CC
  9. AC_DEFUN([gt_TYPE_WINT_T],
  10. [
  11. AC_CACHE_CHECK([for wint_t], [gt_cv_c_wint_t],
  12. [AC_COMPILE_IFELSE(
  13. [AC_LANG_PROGRAM(
  14. [[
  15. /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
  16. <wchar.h>.
  17. BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be included
  18. before <wchar.h>. */
  19. #include <stddef.h>
  20. #include <stdio.h>
  21. #include <time.h>
  22. #include <wchar.h>
  23. wint_t foo = (wchar_t)'\0';]],
  24. [[]])],
  25. [gt_cv_c_wint_t=yes],
  26. [gt_cv_c_wint_t=no])])
  27. if test $gt_cv_c_wint_t = yes; then
  28. AC_DEFINE([HAVE_WINT_T], [1], [Define if you have the 'wint_t' type.])
  29. fi
  30. ])