1 dnl A placeholder for ISO C99 <wctype.h>, for platforms that lack it.
3 dnl Copyright (C) 2006 Free Software Foundation, Inc.
4 dnl This file is free software; the Free Software Foundation
5 dnl gives unlimited permission to copy and/or distribute it,
6 dnl with or without modifications, as long as this notice is preserved.
8 dnl Written by Paul Eggert.
10 AC_DEFUN([gl_WCTYPE_H],
12 AC_CHECK_FUNCS_ONCE([iswcntrl])
13 AC_CHECK_HEADERS_ONCE([wctype.h])
14 AC_REQUIRE([AC_C_INLINE])
16 AC_REQUIRE([gt_TYPE_WINT_T])
17 AC_SUBST([HAVE_WINT_T])
19 if test $ac_cv_header_wctype_h = yes; then
20 gl_ABSOLUTE_HEADER([wctype.h])
21 ABSOLUTE_WCTYPE_H=\"$gl_cv_absolute_wctype_h\"
24 ABSOLUTE_WCTYPE_H=\"no/such/file/wctype.h\"
27 AC_SUBST([ABSOLUTE_WCTYPE_H])
28 AC_SUBST([HAVE_WCTYPE_H])
31 HAVE_WCTYPE_CTMP_BUG=0
32 if test $ac_cv_header_wctype_h = yes; then
33 dnl IRIX 5.3 has a bug: its isw* macros reference an undefined variable
34 dnl _ctmp_. Test against this bug.
35 AC_CACHE_CHECK([whether wctype macros need _ctmp_ declared],
36 [gl_cv_wctype_ctmp_bug],
37 [gl_cv_wctype_ctmp_bug=no
42 [[return iswprint (0);]])],
43 [gl_cv_wctype_ctmp_bug='no, but bare wctype.h does not work'],
47 static wint_t _ctmp_;]],
48 [[return iswprint (0);]])],
49 [gl_cv_wctype_ctmp_bug=yes])])])
50 case $gl_cv_wctype_ctmp_bug,$ac_cv_func_iswcntrl in #(
52 HAVE_WCTYPE_CTMP_BUG=1;; #(
58 AC_SUBST([HAVE_WCTYPE_CTMP_BUG])