2 dnl Copyright (C) 2008-2010 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_WCTOB],
9 AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
11 AC_CHECK_FUNCS_ONCE([wctob])
12 if test $ac_cv_func_wctob = no; then
19 dnl Solaris 9 has the wctob() function but it does not work.
20 dnl Cygwin 1.7.2 has the wctob() function but it clobbers caller-owned
21 dnl registers, see <http://cygwin.com/ml/cygwin/2010-05/msg00015.html>.
22 AC_REQUIRE([AC_PROG_CC])
23 AC_REQUIRE([gt_LOCALE_FR])
24 AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
25 AC_CACHE_CHECK([whether wctob works],
26 [gl_cv_func_wctob_works],
28 dnl Initial guess, used when cross-compiling or when no suitable locale
32 # Guess no on Solaris <= 9 and Cygwin.
33 solaris2.[1-9] | solaris2.[1-9].* | cygwin*)
34 gl_cv_func_wctob_works="guessing no" ;;
35 # Guess yes otherwise.
36 *) gl_cv_func_wctob_works="guessing yes" ;;
45 register long global __asm__ ("%ebx");
49 setlocale (LC_ALL, "en_US.UTF-8");
52 if (wctob (0x00FC) != -1)
54 if (global != 0x12345678)
57 }], [:], [gl_cv_func_wctob_works=no], [:])
60 if test "$gl_cv_func_wctob_works" != no && test $LOCALE_FR != none; then
67 if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
71 if (mbtowc (&wc, "\374", 1) == 1)
72 if (wctob (wc) != (unsigned char) '\374')
77 [gl_cv_func_wctob_works=yes],
78 [gl_cv_func_wctob_works=no],
82 case "$gl_cv_func_wctob_works" in
86 if test $REPLACE_WCTOB = 1; then
92 dnl IRIX 6.5 has the wctob() function but does not declare it.
93 AC_CHECK_DECLS([wctob], [], [], [
94 /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
96 BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be included
103 if test $ac_cv_have_decl_wctob != yes; then
111 # Prerequisites of lib/wctob.c.
112 AC_DEFUN([gl_PREREQ_WCTOB], [