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  1. # intmax.m4 serial 6 (gettext-0.18.2)
  2. dnl Copyright (C) 2002-2005, 2008-2016 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 the system has the 'intmax_t' type, but don't attempt to
  8. dnl find a replacement if it is lacking.
  9. AC_DEFUN([gt_TYPE_INTMAX_T],
  10. [
  11. AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
  12. AC_REQUIRE([gl_AC_HEADER_STDINT_H])
  13. AC_CACHE_CHECK([for intmax_t], [gt_cv_c_intmax_t],
  14. [AC_COMPILE_IFELSE(
  15. [AC_LANG_PROGRAM(
  16. [[
  17. #include <stddef.h>
  18. #include <stdlib.h>
  19. #if HAVE_STDINT_H_WITH_UINTMAX
  20. #include <stdint.h>
  21. #endif
  22. #if HAVE_INTTYPES_H_WITH_UINTMAX
  23. #include <inttypes.h>
  24. #endif
  25. ]],
  26. [[intmax_t x = -1;
  27. return !x;]])],
  28. [gt_cv_c_intmax_t=yes],
  29. [gt_cv_c_intmax_t=no])])
  30. if test $gt_cv_c_intmax_t = yes; then
  31. AC_DEFINE([HAVE_INTMAX_T], [1],
  32. [Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>.])
  33. fi
  34. ])