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   1 # inttypes_h.m4 serial 10
   2 dnl Copyright (C) 1997-2004, 2006, 2008-2010 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
   7 dnl From Paul Eggert.
   8
   9 # Define HAVE_INTTYPES_H_WITH_UINTMAX if <inttypes.h> exists,
  10 # doesn't clash with <sys/types.h>, and declares uintmax_t.
  11
  12 AC_DEFUN([gl_AC_HEADER_INTTYPES_H],
  13 [
  14   AC_CACHE_CHECK([for inttypes.h], [gl_cv_header_inttypes_h],
  15     [AC_COMPILE_IFELSE(
  16        [AC_LANG_PROGRAM(
  17           [[
  18 #include <sys/types.h>
  19 #include <inttypes.h>
  20           ]],
  21           [[uintmax_t i = (uintmax_t) -1; return !i;]])],
  22        [gl_cv_header_inttypes_h=yes],
  23        [gl_cv_header_inttypes_h=no])])
  24   if test $gl_cv_header_inttypes_h = yes; then
  25     AC_DEFINE_UNQUOTED([HAVE_INTTYPES_H_WITH_UINTMAX], [1],
  26       [Define if <inttypes.h> exists, doesn't clash with <sys/types.h>,
  27        and declares uintmax_t. ])
  28   fi
  29 ])