| 1 | # wcrtomb.m4 serial 11 |
| 2 | dnl Copyright (C) 2008-2014 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. |
| 6 | |
| 7 | AC_DEFUN([gl_FUNC_WCRTOMB], |
| 8 | [ |
| 9 | AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) |
| 10 | |
| 11 | AC_REQUIRE([AC_TYPE_MBSTATE_T]) |
| 12 | gl_MBSTATE_T_BROKEN |
| 13 | |
| 14 | AC_CHECK_FUNCS_ONCE([wcrtomb]) |
| 15 | if test $ac_cv_func_wcrtomb = no; then |
| 16 | HAVE_WCRTOMB=0 |
| 17 | AC_CHECK_DECLS([wcrtomb],,, [[ |
| 18 | /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before |
| 19 | <wchar.h>. |
| 20 | BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be |
| 21 | included before <wchar.h>. */ |
| 22 | #include <stddef.h> |
| 23 | #include <stdio.h> |
| 24 | #include <time.h> |
| 25 | #include <wchar.h> |
| 26 | ]]) |
| 27 | if test $ac_cv_have_decl_wcrtomb = yes; then |
| 28 | dnl On Minix 3.1.8, the system's <wchar.h> declares wcrtomb() although |
| 29 | dnl it does not have the function. Avoid a collision with gnulib's |
| 30 | dnl replacement. |
| 31 | REPLACE_WCRTOMB=1 |
| 32 | fi |
| 33 | else |
| 34 | if test $REPLACE_MBSTATE_T = 1; then |
| 35 | REPLACE_WCRTOMB=1 |
| 36 | else |
| 37 | dnl On AIX 4.3, OSF/1 5.1 and Solaris 10, wcrtomb (NULL, 0, NULL) sometimes |
| 38 | dnl returns 0 instead of 1. |
| 39 | AC_REQUIRE([AC_PROG_CC]) |
| 40 | AC_REQUIRE([gt_LOCALE_FR]) |
| 41 | AC_REQUIRE([gt_LOCALE_FR_UTF8]) |
| 42 | AC_REQUIRE([gt_LOCALE_JA]) |
| 43 | AC_REQUIRE([gt_LOCALE_ZH_CN]) |
| 44 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles |
| 45 | AC_CACHE_CHECK([whether wcrtomb return value is correct], |
| 46 | [gl_cv_func_wcrtomb_retval], |
| 47 | [ |
| 48 | dnl Initial guess, used when cross-compiling or when no suitable locale |
| 49 | dnl is present. |
| 50 | changequote(,)dnl |
| 51 | case "$host_os" in |
| 52 | # Guess no on AIX 4, OSF/1 and Solaris. |
| 53 | aix4* | osf* | solaris*) gl_cv_func_wcrtomb_retval="guessing no" ;; |
| 54 | # Guess yes otherwise. |
| 55 | *) gl_cv_func_wcrtomb_retval="guessing yes" ;; |
| 56 | esac |
| 57 | changequote([,])dnl |
| 58 | if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then |
| 59 | AC_RUN_IFELSE( |
| 60 | [AC_LANG_SOURCE([[ |
| 61 | #include <locale.h> |
| 62 | #include <string.h> |
| 63 | /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before |
| 64 | <wchar.h>. |
| 65 | BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be |
| 66 | included before <wchar.h>. */ |
| 67 | #include <stddef.h> |
| 68 | #include <stdio.h> |
| 69 | #include <time.h> |
| 70 | #include <wchar.h> |
| 71 | int main () |
| 72 | { |
| 73 | int result = 0; |
| 74 | if (setlocale (LC_ALL, "$LOCALE_FR") != NULL) |
| 75 | { |
| 76 | if (wcrtomb (NULL, 0, NULL) != 1) |
| 77 | result |= 1; |
| 78 | } |
| 79 | if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL) |
| 80 | { |
| 81 | if (wcrtomb (NULL, 0, NULL) != 1) |
| 82 | result |= 2; |
| 83 | } |
| 84 | if (setlocale (LC_ALL, "$LOCALE_JA") != NULL) |
| 85 | { |
| 86 | if (wcrtomb (NULL, 0, NULL) != 1) |
| 87 | result |= 4; |
| 88 | } |
| 89 | if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL) |
| 90 | { |
| 91 | if (wcrtomb (NULL, 0, NULL) != 1) |
| 92 | result |= 8; |
| 93 | } |
| 94 | return result; |
| 95 | }]])], |
| 96 | [gl_cv_func_wcrtomb_retval=yes], |
| 97 | [gl_cv_func_wcrtomb_retval=no], |
| 98 | [:]) |
| 99 | fi |
| 100 | ]) |
| 101 | case "$gl_cv_func_wcrtomb_retval" in |
| 102 | *yes) ;; |
| 103 | *) REPLACE_WCRTOMB=1 ;; |
| 104 | esac |
| 105 | fi |
| 106 | fi |
| 107 | ]) |
| 108 | |
| 109 | # Prerequisites of lib/wcrtomb.c. |
| 110 | AC_DEFUN([gl_PREREQ_WCRTOMB], [ |
| 111 | : |
| 112 | ]) |