1 # wcsrtombs.m4 serial 10
2 dnl Copyright (C) 2008-2011 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 AC_DEFUN([gl_FUNC_WCSRTOMBS],
9 AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
11 AC_REQUIRE([AC_TYPE_MBSTATE_T])
14 AC_CHECK_FUNCS_ONCE([wcsrtombs])
15 if test $ac_cv_func_wcsrtombs = no; then
18 if test $REPLACE_MBSTATE_T = 1; then
21 gl_WCSRTOMBS_TERMINATION
23 case "$gl_cv_func_wcsrtombs_termination" in
25 *) AC_DEFINE([WCSRTOMBS_TERMINATION_BUG], [1],
26 [Define if the wcsrtombs function may set the source pointer to NULL without NUL-terminating the destination.])
27 REPLACE_WCSRTOMBS=1 ;;
29 case "$gl_cv_func_wcsrtombs_null" in
31 *) AC_DEFINE([WCSRTOMBS_NULL_ARG_BUG], [1],
32 [Define if the wcsrtombs function has the NULL destination argument bug.])
33 REPLACE_WCSRTOMBS=1 ;;
39 dnl Test whether the wcsrtombs implementation stores a non-NULL source pointer
40 dnl as long as it has not written the final NUL byte to the destination string.
41 dnl The OSF/1 5.1 implementation stores a NULL pointer already after storing
42 dnl the last non-NUL character, even if there is no more room for the
43 dnl terminating NUL character.
44 dnl Result is gl_cv_func_wcsrtombs_termination.
46 AC_DEFUN([gl_WCSRTOMBS_TERMINATION],
48 AC_REQUIRE([AC_PROG_CC])
49 AC_REQUIRE([gt_LOCALE_FR])
50 AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
51 AC_CACHE_CHECK([whether wcsrtombs updates the source pointer correctly],
52 [gl_cv_func_wcsrtombs_termination],
54 dnl Initial guess, used when cross-compiling or when no suitable locale
59 osf*) gl_cv_func_wcsrtombs_termination="guessing no" ;;
60 # Guess yes otherwise.
61 *) gl_cv_func_wcsrtombs_termination="guessing yes" ;;
64 if test $LOCALE_FR != none; then
69 /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
71 BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
72 included before <wchar.h>. */
79 if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
81 const char original[] = "B\374\337er";
84 if (mbstowcs (input, original, 10) == 5)
86 const wchar_t *src = input;
88 wcsrtombs (output, &src, 5, NULL);
95 [gl_cv_func_wcsrtombs_termination=yes],
96 [gl_cv_func_wcsrtombs_termination=no],
102 dnl Test whether the wcsrtombs implementation supports a NULL argument
103 dnl correctly. This is not the case on HP-UX 11.11 and OSF/1 5.1: These
104 dnl implementations updates the source pointer also if the destination argument
106 dnl Result is gl_cv_func_wcsrtombs_null.
108 AC_DEFUN([gl_WCSRTOMBS_NULL],
110 AC_REQUIRE([AC_PROG_CC])
111 AC_REQUIRE([gt_LOCALE_FR])
112 AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
113 AC_CACHE_CHECK([whether wcsrtombs supports a NULL argument correctly],
114 [gl_cv_func_wcsrtombs_null],
116 dnl Initial guess, used when cross-compiling or when no suitable locale
120 # Guess no on HP-UX, OSF/1, mingw.
121 hpux* | osf* | mingw*) gl_cv_func_wcsrtombs_null="guessing no" ;;
122 # Guess yes otherwise.
123 *) gl_cv_func_wcsrtombs_null="guessing yes" ;;
126 if test $LOCALE_FR != none; then
131 /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
133 BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
134 included before <wchar.h>. */
142 if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
144 const char original[] = "B\374\337er";
147 if (mbstowcs (input, original, 10) == 5)
149 const wchar_t *src = input;
150 size_t ret = wcsrtombs (NULL, &src, 3, NULL);
159 [gl_cv_func_wcsrtombs_null=yes],
160 [gl_cv_func_wcsrtombs_null=no],
166 # Prerequisites of lib/wcsrtombs.c.
167 AC_DEFUN([gl_PREREQ_WCSRTOMBS], [