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      1 # inttypes_h.m4 serial 10
      2 dnl Copyright (C) 1997-2004, 2006, 2008-2012 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 ])
     30