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41 lines
1.4 KiB
41 lines
1.4 KiB
# mbstate_t.m4 serial 13 |
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dnl Copyright (C) 2000-2002, 2008-2017 Free Software Foundation, Inc. |
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dnl This file is free software; the Free Software Foundation |
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dnl gives unlimited permission to copy and/or distribute it, |
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dnl with or without modifications, as long as this notice is preserved. |
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# From Paul Eggert. |
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# BeOS 5 has <wchar.h> but does not define mbstate_t, |
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# so you can't declare an object of that type. |
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# Check for this incompatibility with Standard C. |
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# AC_TYPE_MBSTATE_T |
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# ----------------- |
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AC_DEFUN([AC_TYPE_MBSTATE_T], |
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[ |
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AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) dnl for HP-UX 11.11 |
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AC_CACHE_CHECK([for mbstate_t], [ac_cv_type_mbstate_t], |
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[AC_COMPILE_IFELSE( |
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[AC_LANG_PROGRAM( |
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[AC_INCLUDES_DEFAULT[ |
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/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before |
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<wchar.h>. |
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BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be |
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included before <wchar.h>. */ |
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#include <stddef.h> |
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#include <stdio.h> |
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#include <time.h> |
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#include <wchar.h>]], |
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[[mbstate_t x; return sizeof x;]])], |
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[ac_cv_type_mbstate_t=yes], |
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[ac_cv_type_mbstate_t=no])]) |
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if test $ac_cv_type_mbstate_t = yes; then |
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AC_DEFINE([HAVE_MBSTATE_T], [1], |
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[Define to 1 if <wchar.h> declares mbstate_t.]) |
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else |
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AC_DEFINE([mbstate_t], [int], |
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[Define to a type if <wchar.h> does not define.]) |
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fi |
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])
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