1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
# intmax_t.m4 serial 5
dnl Copyright (C) 1997-2004, 2006 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl From Paul Eggert.
AC_PREREQ(2.13)
# Define intmax_t to 'long' or 'long long'
# if it is not already defined in <stdint.h> or <inttypes.h>.
AC_DEFUN([gl_AC_TYPE_INTMAX_T],
[
dnl For simplicity, we assume that a header file defines 'intmax_t' if and
dnl only if it defines 'uintmax_t'.
AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
AC_REQUIRE([gl_AC_HEADER_STDINT_H])
if test $gl_cv_header_inttypes_h = no && test $gl_cv_header_stdint_h = no; then
AC_REQUIRE([gl_AC_TYPE_LONG_LONG])
test $ac_cv_type_long_long = yes \
&& ac_type='long long' \
|| ac_type='long'
AC_DEFINE_UNQUOTED(intmax_t, $ac_type,
[Define to long or long long if <inttypes.h> and <stdint.h> don't define.])
else
AC_DEFINE(HAVE_INTMAX_T, 1,
[Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>.])
fi
])
dnl An alternative would be to explicitly test for 'intmax_t'.
AC_DEFUN([gt_AC_TYPE_INTMAX_T],
[
AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
AC_REQUIRE([gl_AC_HEADER_STDINT_H])
AC_CACHE_CHECK(for intmax_t, gt_cv_c_intmax_t,
[AC_TRY_COMPILE([
#include <stddef.h>
#include <stdlib.h>
#if HAVE_STDINT_H_WITH_UINTMAX
#include <stdint.h>
#endif
#if HAVE_INTTYPES_H_WITH_UINTMAX
#include <inttypes.h>
#endif
], [intmax_t x = -1; return !x;], gt_cv_c_intmax_t=yes, gt_cv_c_intmax_t=no)])
if test $gt_cv_c_intmax_t = yes; then
AC_DEFINE(HAVE_INTMAX_T, 1,
[Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>.])
else
AC_REQUIRE([gl_AC_TYPE_LONG_LONG])
test $ac_cv_type_long_long = yes \
&& ac_type='long long' \
|| ac_type='long'
AC_DEFINE_UNQUOTED(intmax_t, $ac_type,
[Define to long or long long if <stdint.h> and <inttypes.h> don't define.])
fi
])
|
