-# wcwidth.m4 serial 15
-dnl Copyright (C) 2006-2010 Free Software Foundation, Inc.
+# wcwidth.m4 serial 23
+dnl Copyright (C) 2006-2015 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_CHECK_HEADERS_ONCE([wchar.h])
AC_CHECK_FUNCS_ONCE([wcwidth])
- AC_CHECK_DECLS([wcwidth], [], [], [
+ AC_CHECK_DECLS([wcwidth], [], [], [[
/* AIX 3.2.5 declares wcwidth in <string.h>. */
#include <string.h>
/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
#include <stdio.h>
#include <time.h>
#include <wchar.h>
-])
+]])
if test $ac_cv_have_decl_wcwidth != yes; then
HAVE_DECL_WCWIDTH=0
fi
- if test $ac_cv_func_wcwidth = no; then
- REPLACE_WCWIDTH=1
- else
- dnl On MacOS X 10.3, wcwidth(0x0301) (COMBINING ACUTE ACCENT) returns 1.
+ if test $ac_cv_func_wcwidth = yes; then
+ HAVE_WCWIDTH=1
+ dnl On Mac OS X 10.3, wcwidth(0x0301) (COMBINING ACUTE ACCENT) returns 1.
+ dnl On OpenBSD 5.0, wcwidth(0x05B0) (HEBREW POINT SHEVA) returns 1.
dnl On OSF/1 5.1, wcwidth(0x200B) (ZERO WIDTH SPACE) returns 1.
dnl This leads to bugs in 'ls' (coreutils).
AC_CACHE_CHECK([whether wcwidth works reasonably in UTF-8 locales],
[gl_cv_func_wcwidth_works],
[
- AC_TRY_RUN([
+ AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
#include <locale.h>
/* AIX 3.2.5 declares wcwidth in <string.h>. */
#include <string.h>
#endif
int main ()
{
+ int result = 0;
if (setlocale (LC_ALL, "fr_FR.UTF-8") != NULL)
- if (wcwidth (0x0301) > 0 || wcwidth (0x200B) > 0)
- return 1;
- return 0;
-}], [gl_cv_func_wcwidth_works=yes], [gl_cv_func_wcwidth_works=no],
+ {
+ if (wcwidth (0x0301) > 0)
+ result |= 1;
+ if (wcwidth (0x05B0) > 0)
+ result |= 2;
+ if (wcwidth (0x200B) > 0)
+ result |= 4;
+ }
+ return result;
+}]])],
+ [gl_cv_func_wcwidth_works=yes],
+ [gl_cv_func_wcwidth_works=no],
[
changequote(,)dnl
case "$host_os" in
- # Guess yes on glibc systems.
- *-gnu*) gl_cv_func_wcwidth_works="guessing yes";;
- *) gl_cv_func_wcwidth_works="guessing no";;
+ # Guess yes on glibc and AIX 7 systems.
+ *-gnu* | aix[7-9]*) gl_cv_func_wcwidth_works="guessing yes";;
+ *) gl_cv_func_wcwidth_works="guessing no";;
esac
changequote([,])dnl
])
*yes) ;;
*no) REPLACE_WCWIDTH=1 ;;
esac
+ else
+ HAVE_WCWIDTH=0
fi
- if test $REPLACE_WCWIDTH = 1; then
- AC_LIBOBJ([wcwidth])
- fi
-
- if test $REPLACE_WCWIDTH = 1 || test $HAVE_DECL_WCWIDTH = 0; then
- gl_REPLACE_WCHAR_H
- fi
+ dnl We don't substitute HAVE_WCWIDTH. We assume that if the system does not
+ dnl have the wcwidth function, then it does not declare it.
])