HCoop / bpt / guile.git / blame
| Commit | Line | Data |
|---|---|---|
| 9157d901 | 1 | # intmax_t.m4 serial 8 |
| af07e104 | 2 | dnl Copyright (C) 1997-2004, 2006-2007, 2009-2013 Free Software Foundation, |
| 61cd9dc9 | 3 | dnl Inc. |
| c4b681fd LC |
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. | |
| 7 | ||
| 8 | dnl From Paul Eggert. | |
| 9 | ||
| 9157d901 | 10 | AC_PREREQ([2.53]) |
| c4b681fd LC |
11 | |
| 12 | # Define intmax_t to 'long' or 'long long' | |
| 13 | # if it is not already defined in <stdint.h> or <inttypes.h>. | |
| 14 | ||
| 15 | AC_DEFUN([gl_AC_TYPE_INTMAX_T], | |
| 16 | [ | |
| 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 $ac_cv_type_long_long_int = yes \ | |
| 24 | && ac_type='long long' \ | |
| 25 | || ac_type='long' | |
| 26 | AC_DEFINE_UNQUOTED([intmax_t], [$ac_type], | |
| 27 | [Define to long or long long if <inttypes.h> and <stdint.h> don't define.]) | |
| 28 | else | |
| 29 | AC_DEFINE([HAVE_INTMAX_T], [1], | |
| 30 | [Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>.]) | |
| 31 | fi | |
| 32 | ]) | |
| 33 | ||
| 34 | dnl An alternative would be to explicitly test for 'intmax_t'. | |
| 35 | ||
| 36 | AC_DEFUN([gt_AC_TYPE_INTMAX_T], | |
| 37 | [ | |
| 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], | |
| 9157d901 LC |
41 | [AC_COMPILE_IFELSE( |
| 42 | [AC_LANG_PROGRAM( | |
| 43 | [[ | |
| c4b681fd LC |
44 | #include <stddef.h> |
| 45 | #include <stdlib.h> | |
| 46 | #if HAVE_STDINT_H_WITH_UINTMAX | |
| 47 | #include <stdint.h> | |
| 48 | #endif | |
| 49 | #if HAVE_INTTYPES_H_WITH_UINTMAX | |
| 50 | #include <inttypes.h> | |
| 51 | #endif | |
| 9157d901 LC |
52 | ]], |
| 53 | [[intmax_t x = -1; return !x;]])], | |
| 54 | [gt_cv_c_intmax_t=yes], | |
| 55 | [gt_cv_c_intmax_t=no])]) | |
| c4b681fd LC |
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>.]) | |
| 59 | else | |
| 60 | AC_REQUIRE([AC_TYPE_LONG_LONG_INT]) | |
| 61 | test $ac_cv_type_long_long_int = yes \ | |
| 62 | && ac_type='long long' \ | |
| 63 | || ac_type='long' | |
| 64 | AC_DEFINE_UNQUOTED([intmax_t], [$ac_type], | |
| 65 | [Define to long or long long if <stdint.h> and <inttypes.h> don't define.]) | |
| 66 | fi | |
| 67 | ]) |