| 1 | # wcrtomb.m4 serial 11
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| 2 | dnl Copyright (C) 2008-2012 Free Software Foundation, Inc.
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| 3 | dnl This file is free software; the Free Software Foundation
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| 4 | dnl gives unlimited permission to copy and/or distribute it,
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| 5 | dnl with or without modifications, as long as this notice is preserved.
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| 6 |
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| 7 | AC_DEFUN([gl_FUNC_WCRTOMB],
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| 8 | [
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| 9 | AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
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| 10 |
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| 11 | AC_REQUIRE([AC_TYPE_MBSTATE_T])
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| 12 | gl_MBSTATE_T_BROKEN
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| 13 |
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| 14 | AC_CHECK_FUNCS_ONCE([wcrtomb])
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| 15 | if test $ac_cv_func_wcrtomb = no; then
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| 16 | HAVE_WCRTOMB=0
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| 17 | AC_CHECK_DECLS([wcrtomb],,, [[
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| 18 | /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
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| 19 | <wchar.h>.
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| 20 | BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
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| 21 | included before <wchar.h>. */
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| 22 | #include <stddef.h>
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| 23 | #include <stdio.h>
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| 24 | #include <time.h>
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| 25 | #include <wchar.h>
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| 26 | ]])
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| 27 | if test $ac_cv_have_decl_wcrtomb = yes; then
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| 28 | dnl On Minix 3.1.8, the system's <wchar.h> declares wcrtomb() although
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| 29 | dnl it does not have the function. Avoid a collision with gnulib's
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| 30 | dnl replacement.
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| 31 | REPLACE_WCRTOMB=1
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| 32 | fi
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| 33 | else
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| 34 | if test $REPLACE_MBSTATE_T = 1; then
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| 35 | REPLACE_WCRTOMB=1
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| 36 | else
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| 37 | dnl On AIX 4.3, OSF/1 5.1 and Solaris 10, wcrtomb (NULL, 0, NULL) sometimes
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| 38 | dnl returns 0 instead of 1.
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| 39 | AC_REQUIRE([AC_PROG_CC])
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| 40 | AC_REQUIRE([gt_LOCALE_FR])
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| 41 | AC_REQUIRE([gt_LOCALE_FR_UTF8])
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| 42 | AC_REQUIRE([gt_LOCALE_JA])
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| 43 | AC_REQUIRE([gt_LOCALE_ZH_CN])
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| 44 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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| 45 | AC_CACHE_CHECK([whether wcrtomb return value is correct],
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| 46 | [gl_cv_func_wcrtomb_retval],
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| 47 | [
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| 48 | dnl Initial guess, used when cross-compiling or when no suitable locale
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| 49 | dnl is present.
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| 50 | changequote(,)dnl
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| 51 | case "$host_os" in
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| 52 | # Guess no on AIX 4, OSF/1 and Solaris.
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| 53 | aix4* | osf* | solaris*) gl_cv_func_wcrtomb_retval="guessing no" ;;
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| 54 | # Guess yes otherwise.
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| 55 | *) gl_cv_func_wcrtomb_retval="guessing yes" ;;
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| 56 | esac
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| 57 | changequote([,])dnl
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| 58 | if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then
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| 59 | AC_RUN_IFELSE(
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| 60 | [AC_LANG_SOURCE([[
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| 61 | #include <locale.h>
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| 62 | #include <string.h>
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| 63 | /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
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| 64 | <wchar.h>.
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| 65 | BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
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| 66 | included before <wchar.h>. */
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| 67 | #include <stddef.h>
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| 68 | #include <stdio.h>
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| 69 | #include <time.h>
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| 70 | #include <wchar.h>
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| 71 | int main ()
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| 72 | {
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| 73 | int result = 0;
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| 74 | if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
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| 75 | {
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| 76 | if (wcrtomb (NULL, 0, NULL) != 1)
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| 77 | result |= 1;
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| 78 | }
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| 79 | if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
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| 80 | {
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| 81 | if (wcrtomb (NULL, 0, NULL) != 1)
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| 82 | result |= 2;
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| 83 | }
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| 84 | if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
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| 85 | {
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| 86 | if (wcrtomb (NULL, 0, NULL) != 1)
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| 87 | result |= 4;
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| 88 | }
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| 89 | if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
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| 90 | {
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| 91 | if (wcrtomb (NULL, 0, NULL) != 1)
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| 92 | result |= 8;
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| 93 | }
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| 94 | return result;
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| 95 | }]])],
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| 96 | [gl_cv_func_wcrtomb_retval=yes],
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| 97 | [gl_cv_func_wcrtomb_retval=no],
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| 98 | [:])
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| 99 | fi
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| 100 | ])
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| 101 | case "$gl_cv_func_wcrtomb_retval" in
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| 102 | *yes) ;;
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| 103 | *) REPLACE_WCRTOMB=1 ;;
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| 104 | esac
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| 105 | fi
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| 106 | fi
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| 107 | ])
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| 108 |
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| 109 | # Prerequisites of lib/wcrtomb.c.
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| 110 | AC_DEFUN([gl_PREREQ_WCRTOMB], [
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| 111 | :
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| 112 | ])
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