1 # wcsrtombs.m4 serial 8
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 ;;
37 if test $HAVE_WCSRTOMBS = 0 || test $REPLACE_WCSRTOMBS = 1; then
39 AC_LIBOBJ([wcsrtombs])
40 AC_LIBOBJ([wcsrtombs-state])
45 dnl Test whether the wcsrtombs implementation stores a non-NULL source pointer
46 dnl as long as it has not written the final NUL byte to the destination string.
47 dnl The OSF/1 5.1 implementation stores a NULL pointer already after storing
48 dnl the last non-NUL character, even if there is no more room for the
49 dnl terminating NUL character.
50 dnl Result is gl_cv_func_wcsrtombs_termination.
52 AC_DEFUN([gl_WCSRTOMBS_TERMINATION],
54 AC_REQUIRE([AC_PROG_CC])
55 AC_REQUIRE([gt_LOCALE_FR])
56 AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
57 AC_CACHE_CHECK([whether wcsrtombs updates the source pointer correctly],
58 [gl_cv_func_wcsrtombs_termination],
60 dnl Initial guess, used when cross-compiling or when no suitable locale
65 osf*) gl_cv_func_wcsrtombs_termination="guessing no" ;;
66 # Guess yes otherwise.
67 *) gl_cv_func_wcsrtombs_termination="guessing yes" ;;
70 if test $LOCALE_FR != none; then
75 /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
77 BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
78 included before <wchar.h>. */
85 if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
87 const char original[] = "B\374\337er";
90 if (mbstowcs (input, original, 10) == 5)
92 const wchar_t *src = input;
94 wcsrtombs (output, &src, 5, NULL);
101 [gl_cv_func_wcsrtombs_termination=yes],
102 [gl_cv_func_wcsrtombs_termination=no],
108 dnl Test whether the wcsrtombs implementation supports a NULL argument
109 dnl correctly. This is not the case on HP-UX 11.11 and OSF/1 5.1: These
110 dnl implementations updates the source pointer also if the destination argument
112 dnl Result is gl_cv_func_wcsrtombs_null.
114 AC_DEFUN([gl_WCSRTOMBS_NULL],
116 AC_REQUIRE([AC_PROG_CC])
117 AC_REQUIRE([gt_LOCALE_FR])
118 AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
119 AC_CACHE_CHECK([whether wcsrtombs supports a NULL argument correctly],
120 [gl_cv_func_wcsrtombs_null],
122 dnl Initial guess, used when cross-compiling or when no suitable locale
126 # Guess no on HP-UX, OSF/1, mingw.
127 hpux* | osf* | mingw*) gl_cv_func_wcsrtombs_null="guessing no" ;;
128 # Guess yes otherwise.
129 *) gl_cv_func_wcsrtombs_null="guessing yes" ;;
132 if test $LOCALE_FR != none; then
137 /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
139 BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
140 included before <wchar.h>. */
148 if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
150 const char original[] = "B\374\337er";
153 if (mbstowcs (input, original, 10) == 5)
155 const wchar_t *src = input;
156 size_t ret = wcsrtombs (NULL, &src, 3, NULL);
165 [gl_cv_func_wcsrtombs_null=yes],
166 [gl_cv_func_wcsrtombs_null=no],
172 # Prerequisites of lib/wcsrtombs.c.
173 AC_DEFUN([gl_PREREQ_WCSRTOMBS], [