intmax_t.m4 revision 2
0N/A# intmax_t.m4 serial 8
0N/Adnl Copyright (C) 1997-2004, 2006-2007, 2009-2010 Free Software Foundation,
0N/Adnl Inc.
0N/Adnl This file is free software; the Free Software Foundation
0N/Adnl gives unlimited permission to copy and/or distribute it,
0N/Adnl with or without modifications, as long as this notice is preserved.
0N/A
0N/Adnl From Paul Eggert.
0N/A
0N/AAC_PREREQ([2.53])
0N/A
0N/A# Define intmax_t to 'long' or 'long long'
0N/A# if it is not already defined in <stdint.h> or <inttypes.h>.
0N/A
0N/AAC_DEFUN([gl_AC_TYPE_INTMAX_T],
0N/A[
0N/A dnl For simplicity, we assume that a header file defines 'intmax_t' if and
873N/A dnl only if it defines 'uintmax_t'.
0N/A AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
0N/A AC_REQUIRE([gl_AC_HEADER_STDINT_H])
0N/A if test $gl_cv_header_inttypes_h = no && test $gl_cv_header_stdint_h = no; then
0N/A AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
0N/A test $ac_cv_type_long_long_int = yes \
733N/A && ac_type='long long' \
0N/A || ac_type='long'
0N/A AC_DEFINE_UNQUOTED([intmax_t], [$ac_type],
0N/A [Define to long or long long if <inttypes.h> and <stdint.h> don't define.])
0N/A else
0N/A AC_DEFINE([HAVE_INTMAX_T], [1],
0N/A [Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>.])
0N/A fi
0N/A])
0N/A
0N/Adnl An alternative would be to explicitly test for 'intmax_t'.
0N/A
0N/AAC_DEFUN([gt_AC_TYPE_INTMAX_T],
0N/A[
0N/A AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
0N/A AC_REQUIRE([gl_AC_HEADER_STDINT_H])
0N/A AC_CACHE_CHECK([for intmax_t], [gt_cv_c_intmax_t],
0N/A [AC_COMPILE_IFELSE(
0N/A [AC_LANG_PROGRAM(
0N/A [[
0N/A#include <stddef.h>
0N/A#include <stdlib.h>
0N/A#if HAVE_STDINT_H_WITH_UINTMAX
0N/A#include <stdint.h>
0N/A#endif
0N/A#if HAVE_INTTYPES_H_WITH_UINTMAX
0N/A#include <inttypes.h>
0N/A#endif
0N/A ]],
0N/A [[intmax_t x = -1; return !x;]])],
0N/A [gt_cv_c_intmax_t=yes],
0N/A [gt_cv_c_intmax_t=no])])
0N/A if test $gt_cv_c_intmax_t = yes; then
0N/A AC_DEFINE([HAVE_INTMAX_T], [1],
0N/A [Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>.])
0N/A else
0N/A AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
0N/A test $ac_cv_type_long_long_int = yes \
0N/A && ac_type='long long' \
0N/A || ac_type='long'
0N/A AC_DEFINE_UNQUOTED([intmax_t], [$ac_type],
0N/A [Define to long or long long if <stdint.h> and <inttypes.h> don't define.])
0N/A fi
0N/A])
0N/A