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# wctob.m4 serial 14
dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_FUNC_WCTOB],
[
AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
AC_CHECK_FUNCS_ONCE([wctob])
if test $ac_cv_func_wctob = no; then
HAVE_WCTOB=0
HAVE_DECL_WCTOB=0
else
HAVE_WCTOB=1
dnl Solaris 9 has the wctob() function but it does not work.
dnl Cygwin 1.7.2 has the wctob() function but it clobbers caller-owned
dnl registers, see <https://cygwin.com/ml/cygwin/2010-05/msg00015.html>.
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([gt_LOCALE_FR])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether wctob works],
[gl_cv_func_wctob_works],
[
dnl Initial guess, used when cross-compiling or when no suitable locale
dnl is present.
changequote(,)dnl
case "$host_os" in
# Guess no on Solaris <= 9 and Cygwin.
solaris2.[1-9] | solaris2.[1-9].* | cygwin*)
gl_cv_func_wctob_works="guessing no" ;;
# Guess no on native Windows.
mingw* | windows*)
gl_cv_func_wctob_works="guessing no" ;;
# Guess yes otherwise.
*) gl_cv_func_wctob_works="guessing yes" ;;
esac
changequote([,])dnl
case "$host_os" in
cygwin*)
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#include <locale.h>
#include <wchar.h>
register long global __asm__ ("%ebx");
int main ()
{
setlocale (LC_ALL, "en_US.UTF-8");
global = 0x12345678;
if (wctob (0x00FC) != -1)
return 1;
if (global != 0x12345678)
return 2;
return 0;
}]])],
[:],
[gl_cv_func_wctob_works=no],
[:])
;;
esac
if test "$gl_cv_func_wctob_works" != no && test $LOCALE_FR != none; then
AC_RUN_IFELSE(
[AC_LANG_SOURCE([[
#include <locale.h>
#include <stdlib.h>
#include <wchar.h>
int main ()
{
if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
{
wchar_t wc;
if (mbtowc (&wc, "\374", 1) == 1)
if (wctob (wc) != (unsigned char) '\374')
return 1;
}
return 0;
}]])],
[gl_cv_func_wctob_works=yes],
[gl_cv_func_wctob_works=no],
[:])
fi
])
case "$gl_cv_func_wctob_works" in
*yes) ;;
*) REPLACE_WCTOB=1 ;;
esac
if test $REPLACE_WCTOB = 0; then
dnl IRIX 6.5 has the wctob() function but does not declare it.
AC_CHECK_DECLS([wctob], [], [], [[
#include <wchar.h>
]])
if test $ac_cv_have_decl_wctob != yes; then
HAVE_DECL_WCTOB=0
fi
fi
fi
])
# Prerequisites of lib/wctob.c.
AC_DEFUN([gl_PREREQ_WCTOB], [
:
])
|
