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128 lines
3.4 KiB
Plaintext
128 lines
3.4 KiB
Plaintext
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# wctob.m4 serial 9
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dnl Copyright (C) 2008-2011 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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AC_DEFUN([gl_FUNC_WCTOB],
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[
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AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
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AC_CHECK_FUNCS_ONCE([wctob])
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if test $ac_cv_func_wctob = no; then
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HAVE_WCTOB=0
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HAVE_DECL_WCTOB=0
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else
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HAVE_WCTOB=1
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dnl Solaris 9 has the wctob() function but it does not work.
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dnl Cygwin 1.7.2 has the wctob() function but it clobbers caller-owned
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dnl registers, see <http://cygwin.com/ml/cygwin/2010-05/msg00015.html>.
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AC_REQUIRE([AC_PROG_CC])
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AC_REQUIRE([gt_LOCALE_FR])
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AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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AC_CACHE_CHECK([whether wctob works],
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[gl_cv_func_wctob_works],
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[
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dnl Initial guess, used when cross-compiling or when no suitable locale
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dnl is present.
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changequote(,)dnl
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case "$host_os" in
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# Guess no on Solaris <= 9 and Cygwin.
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solaris2.[1-9] | solaris2.[1-9].* | cygwin*)
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gl_cv_func_wctob_works="guessing no" ;;
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# Guess yes otherwise.
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*) gl_cv_func_wctob_works="guessing yes" ;;
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esac
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changequote([,])dnl
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case "$host_os" in
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cygwin*)
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AC_RUN_IFELSE(
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[AC_LANG_SOURCE([[
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#include <locale.h>
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/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
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<wchar.h>.
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BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
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included before <wchar.h>. */
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#include <stddef.h>
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#include <stdio.h>
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#include <time.h>
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#include <wchar.h>
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register long global __asm__ ("%ebx");
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int main ()
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{
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setlocale (LC_ALL, "en_US.UTF-8");
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global = 0x12345678;
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if (wctob (0x00FC) != -1)
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return 1;
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if (global != 0x12345678)
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return 2;
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return 0;
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}]])],
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[:],
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[gl_cv_func_wctob_works=no],
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[:])
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;;
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esac
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if test "$gl_cv_func_wctob_works" != no && test $LOCALE_FR != none; then
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AC_RUN_IFELSE(
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[AC_LANG_SOURCE([[
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#include <locale.h>
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#include <string.h>
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/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
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<wchar.h>.
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BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
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included before <wchar.h>. */
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#include <stddef.h>
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#include <stdio.h>
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#include <time.h>
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#include <wchar.h>
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int main ()
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{
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if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
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{
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wchar_t wc;
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if (mbtowc (&wc, "\374", 1) == 1)
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if (wctob (wc) != (unsigned char) '\374')
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return 1;
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}
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return 0;
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}]])],
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[gl_cv_func_wctob_works=yes],
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[gl_cv_func_wctob_works=no],
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[:])
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fi
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])
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case "$gl_cv_func_wctob_works" in
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*yes) ;;
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*) REPLACE_WCTOB=1 ;;
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esac
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if test $REPLACE_WCTOB = 0; then
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dnl IRIX 6.5 has the wctob() function but does not declare it.
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AC_CHECK_DECLS([wctob], [], [], [
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/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
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<wchar.h>.
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BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be included
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before <wchar.h>. */
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#include <stddef.h>
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#include <stdio.h>
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#include <time.h>
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#include <wchar.h>
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])
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if test $ac_cv_have_decl_wctob != yes; then
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HAVE_DECL_WCTOB=0
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fi
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fi
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fi
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])
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# Prerequisites of lib/wctob.c.
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AC_DEFUN([gl_PREREQ_WCTOB], [
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:
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])
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