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  1. # inttypes_h.m4 serial 10
  2. dnl Copyright (C) 1997-2004, 2006, 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 Paul Eggert.
  7. # Define HAVE_INTTYPES_H_WITH_UINTMAX if <inttypes.h> exists,
  8. # doesn't clash with <sys/types.h>, and declares uintmax_t.
  9. AC_DEFUN([gl_AC_HEADER_INTTYPES_H],
  10. [
  11. AC_CACHE_CHECK([for inttypes.h], [gl_cv_header_inttypes_h],
  12. [AC_COMPILE_IFELSE(
  13. [AC_LANG_PROGRAM(
  14. [[
  15. #include <sys/types.h>
  16. #include <inttypes.h>
  17. ]],
  18. [[uintmax_t i = (uintmax_t) -1; return !i;]])],
  19. [gl_cv_header_inttypes_h=yes],
  20. [gl_cv_header_inttypes_h=no])])
  21. if test $gl_cv_header_inttypes_h = yes; then
  22. AC_DEFINE_UNQUOTED([HAVE_INTTYPES_H_WITH_UINTMAX], [1],
  23. [Define if <inttypes.h> exists, doesn't clash with <sys/types.h>,
  24. and declares uintmax_t. ])
  25. fi
  26. ])