2N/A# intmax_t.m4 serial 8

2N/Adnl Copyright (C) 1997-2004, 2006-2007, 2009-2010 Free Software Foundation,

2N/Adnl Inc.

2N/Adnl This file is free software; the Free Software Foundation

2N/Adnl gives unlimited permission to copy and/or distribute it,

2N/Adnl with or without modifications, as long as this notice is preserved.

2N/A

2N/Adnl From Paul Eggert.

2N/A

2N/AAC_PREREQ([2.53])

2N/A

2N/A# Define intmax_t to 'long' or 'long long'

2N/A# if it is not already defined in <stdint.h> or <inttypes.h>.

2N/A

2N/AAC_DEFUN([gl_AC_TYPE_INTMAX_T],

2N/A[

2N/A dnl For simplicity, we assume that a header file defines 'intmax_t' if and

2N/A dnl only if it defines 'uintmax_t'.

2N/A AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])

2N/A AC_REQUIRE([gl_AC_HEADER_STDINT_H])

2N/A if test $gl_cv_header_inttypes_h = no && test $gl_cv_header_stdint_h = no; then

2N/A AC_REQUIRE([AC_TYPE_LONG_LONG_INT])

2N/A test $ac_cv_type_long_long_int = yes \

2N/A && ac_type='long long' \

2N/A || ac_type='long'

2N/A AC_DEFINE_UNQUOTED([intmax_t], [$ac_type],

2N/A [Define to long or long long if <inttypes.h> and <stdint.h> don't define.])

2N/A else

2N/A AC_DEFINE([HAVE_INTMAX_T], [1],

2N/A [Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>.])

2N/A fi

2N/A])

2N/A

2N/Adnl An alternative would be to explicitly test for 'intmax_t'.

2N/A

2N/AAC_DEFUN([gt_AC_TYPE_INTMAX_T],

2N/A[

2N/A AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])

2N/A AC_REQUIRE([gl_AC_HEADER_STDINT_H])

2N/A AC_CACHE_CHECK([for intmax_t], [gt_cv_c_intmax_t],

2N/A [AC_COMPILE_IFELSE(

2N/A [AC_LANG_PROGRAM(

2N/A [[

2N/A#include <stddef.h>

2N/A#include <stdlib.h>

2N/A#if HAVE_STDINT_H_WITH_UINTMAX

2N/A#include <stdint.h>

2N/A#endif

2N/A#if HAVE_INTTYPES_H_WITH_UINTMAX

2N/A#include <inttypes.h>

2N/A#endif

2N/A ]],

2N/A [[intmax_t x = -1; return !x;]])],

2N/A [gt_cv_c_intmax_t=yes],

2N/A [gt_cv_c_intmax_t=no])])

2N/A if test $gt_cv_c_intmax_t = yes; then

2N/A AC_DEFINE([HAVE_INTMAX_T], [1],

2N/A [Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>.])

2N/A else

2N/A AC_REQUIRE([AC_TYPE_LONG_LONG_INT])

2N/A test $ac_cv_type_long_long_int = yes \

2N/A && ac_type='long long' \

2N/A || ac_type='long'

2N/A AC_DEFINE_UNQUOTED([intmax_t], [$ac_type],

2N/A [Define to long or long long if <stdint.h> and <inttypes.h> don't define.])

2N/A fi

2N/A])