+# wctype.m4 serial 2
+
dnl A placeholder for ISO C99 <wctype.h>, for platforms that lack it.
-dnl Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2008 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_WCTYPE_H],
[
+ AC_REQUIRE([AC_PROG_CC])
AC_CHECK_FUNCS_ONCE([iswcntrl])
if test $ac_cv_func_iswcntrl = yes; then
HAVE_ISWCNTRL=1
WCTYPE_H=wctype.h
if test $ac_cv_header_wctype_h = yes; then
if test $ac_cv_func_iswcntrl = yes; then
- WCTYPE_H=
+ dnl Linux libc5 has an iswprint function that returns 0 for all arguments.
+ dnl The other functions are likely broken in the same way.
+ AC_CACHE_CHECK([whether iswcntrl works], [gl_cv_func_iswcntrl_works],
+ [
+ AC_TRY_RUN([#include <stddef.h>
+ #include <stdio.h>
+ #include <time.h>
+ #include <wchar.h>
+ #include <wctype.h>
+ int main () { return iswprint ('x') == 0; }],
+ [gl_cv_func_iswcntrl_works=yes], [gl_cv_func_iswcntrl_works=no],
+ [AC_TRY_COMPILE([#include <stdlib.h>
+ #if __GNU_LIBRARY__ == 1
+ Linux libc5 i18n is broken.
+ #endif], [],
+ [gl_cv_func_iswcntrl_works=yes], [gl_cv_func_iswcntrl_works=no])
+ ])
+ ])
+ if test $gl_cv_func_iswcntrl_works = yes; then
+ WCTYPE_H=
+ fi
fi
dnl Compute NEXT_WCTYPE_H even if WCTYPE_H is empty,
dnl for the benefit of builds from non-distclean directories.
fi
AC_SUBST([HAVE_WCTYPE_H])
AC_SUBST([WCTYPE_H])
+
+ if test "$gl_cv_func_iswcntrl_works" = no; then
+ REPLACE_ISWCNTRL=1
+ else
+ REPLACE_ISWCNTRL=0
+ fi
+ AC_SUBST([REPLACE_ISWCNTRL])
])