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  1. # uintmax_t.m4 serial 12
  2. dnl Copyright (C) 1997-2004, 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 Paul Eggert.
  7. AC_PREREQ([2.13])
  8. # Define uintmax_t to 'unsigned long' or 'unsigned long long'
  9. # if it is not already defined in <stdint.h> or <inttypes.h>.
  10. AC_DEFUN([gl_AC_TYPE_UINTMAX_T],
  11. [
  12. AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
  13. AC_REQUIRE([gl_AC_HEADER_STDINT_H])
  14. if test $gl_cv_header_inttypes_h = no && test $gl_cv_header_stdint_h = no; then
  15. AC_REQUIRE([AC_TYPE_UNSIGNED_LONG_LONG_INT])
  16. test $ac_cv_type_unsigned_long_long_int = yes \
  17. && ac_type='unsigned long long' \
  18. || ac_type='unsigned long'
  19. AC_DEFINE_UNQUOTED([uintmax_t], [$ac_type],
  20. [Define to unsigned long or unsigned long long
  21. if <stdint.h> and <inttypes.h> don't define.])
  22. else
  23. AC_DEFINE([HAVE_UINTMAX_T], [1],
  24. [Define if you have the 'uintmax_t' type in <stdint.h> or <inttypes.h>.])
  25. fi
  26. ])