2 dnl Copyright (C) 1997-2004, 2006-2007, 2009-2010 Free Software Foundation,
4 dnl This file is free software; the Free Software Foundation
5 dnl gives unlimited permission to copy and/or distribute it,
6 dnl with or without modifications, as long as this notice is preserved.
12 # Define intmax_t to 'long' or 'long long'
13 # if it is not already defined in <stdint.h> or <inttypes.h>.
15 AC_DEFUN([gl_AC_TYPE_INTMAX_T],
17 dnl For simplicity, we assume that a header file defines 'intmax_t' if and
18 dnl only if it defines 'uintmax_t'.
19 AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
20 AC_REQUIRE([gl_AC_HEADER_STDINT_H])
21 if test $gl_cv_header_inttypes_h = no && test $gl_cv_header_stdint_h = no; then
22 AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
23 test $ac_cv_type_long_long_int = yes \
24 && ac_type='long long' \
26 AC_DEFINE_UNQUOTED([intmax_t], [$ac_type],
27 [Define to long or long long if <inttypes.h> and <stdint.h> don't define.])
29 AC_DEFINE([HAVE_INTMAX_T], [1],
30 [Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>.])
34 dnl An alternative would be to explicitly test for 'intmax_t'.
36 AC_DEFUN([gt_AC_TYPE_INTMAX_T],
38 AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
39 AC_REQUIRE([gl_AC_HEADER_STDINT_H])
40 AC_CACHE_CHECK([for intmax_t], [gt_cv_c_intmax_t],
46 #if HAVE_STDINT_H_WITH_UINTMAX
49 #if HAVE_INTTYPES_H_WITH_UINTMAX
53 [[intmax_t x = -1; return !x;]])],
54 [gt_cv_c_intmax_t=yes],
55 [gt_cv_c_intmax_t=no])])
56 if test $gt_cv_c_intmax_t = yes; then
57 AC_DEFINE([HAVE_INTMAX_T], [1],
58 [Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>.])
60 AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
61 test $ac_cv_type_long_long_int = yes \
62 && ac_type='long long' \
64 AC_DEFINE_UNQUOTED([intmax_t], [$ac_type],
65 [Define to long or long long if <stdint.h> and <inttypes.h> don't define.])