2 dnl Copyright (C) 1997-2004, 2006-2007 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.
11 # Define intmax_t to 'long' or 'long long'
12 # if it is not already defined in <stdint.h> or <inttypes.h>.
14 AC_DEFUN([gl_AC_TYPE_INTMAX_T],
16 dnl For simplicity, we assume that a header file defines 'intmax_t' if and
17 dnl only if it defines 'uintmax_t'.
18 AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
19 AC_REQUIRE([gl_AC_HEADER_STDINT_H])
20 if test $gl_cv_header_inttypes_h = no && test $gl_cv_header_stdint_h = no; then
21 AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
22 test $ac_cv_type_long_long_int = yes \
23 && ac_type='long long' \
25 AC_DEFINE_UNQUOTED(intmax_t, $ac_type,
26 [Define to long or long long if <inttypes.h> and <stdint.h> don't define.])
28 AC_DEFINE(HAVE_INTMAX_T, 1,
29 [Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>.])
33 dnl An alternative would be to explicitly test for 'intmax_t'.
35 AC_DEFUN([gt_AC_TYPE_INTMAX_T],
37 AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
38 AC_REQUIRE([gl_AC_HEADER_STDINT_H])
39 AC_CACHE_CHECK(for intmax_t, gt_cv_c_intmax_t,
43 #if HAVE_STDINT_H_WITH_UINTMAX
46 #if HAVE_INTTYPES_H_WITH_UINTMAX
49 ], [intmax_t x = -1; return !x;], gt_cv_c_intmax_t=yes, gt_cv_c_intmax_t=no)])
50 if test $gt_cv_c_intmax_t = yes; then
51 AC_DEFINE(HAVE_INTMAX_T, 1,
52 [Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>.])
54 AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
55 test $ac_cv_type_long_long_int = yes \
56 && ac_type='long long' \
58 AC_DEFINE_UNQUOTED(intmax_t, $ac_type,
59 [Define to long or long long if <stdint.h> and <inttypes.h> don't define.])