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      1 # stdint_h.m4 serial 9
      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_STDINT_H_WITH_UINTMAX if <stdint.h> exists,
     10 # doesn't clash with <sys/types.h>, and declares uintmax_t.
     11 
     12 AC_DEFUN([gl_AC_HEADER_STDINT_H],
     13 [
     14   AC_CACHE_CHECK([for stdint.h], [gl_cv_header_stdint_h],
     15     [AC_COMPILE_IFELSE(
     16        [AC_LANG_PROGRAM(
     17           [[#include <sys/types.h>
     18             #include <stdint.h>]],
     19           [[uintmax_t i = (uintmax_t) -1; return !i;]])],
     20        [gl_cv_header_stdint_h=yes],
     21        [gl_cv_header_stdint_h=no])])
     22   if test $gl_cv_header_stdint_h = yes; then
     23     AC_DEFINE_UNQUOTED([HAVE_STDINT_H_WITH_UINTMAX], [1],
     24       [Define if <stdint.h> exists, doesn't clash with <sys/types.h>,
     25        and declares uintmax_t. ])
     26   fi
     27 ])
     28