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view m4/intmax_t.m4 @ 269:6cbc409ff09f 2.6
Added asprintf redux
author | lost |
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date | Tue, 22 Dec 2009 05:53:05 +0000 |
parents | bec6d2480f08 |
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# intmax_t.m4 serial 7 dnl Copyright (C) 1997-2004, 2006-2007, 2009 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([AC_TYPE_LONG_LONG_INT]) test $ac_cv_type_long_long_int = yes \ && ac_type='long long' \ || ac_type='long' AC_DEFINE_UNQUOTED([intmax_t], [$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([AC_TYPE_LONG_LONG_INT]) test $ac_cv_type_long_long_int = yes \ && ac_type='long long' \ || ac_type='long' AC_DEFINE_UNQUOTED([intmax_t], [$ac_type], [Define to long or long long if <stdint.h> and <inttypes.h> don't define.]) fi ])