3
dnl A placeholder for ISO C99 <wctype.h>, for platforms that lack it.
5
dnl Copyright (C) 2006-2010 Free Software Foundation, Inc.
6
dnl This file is free software; the Free Software Foundation
7
dnl gives unlimited permission to copy and/or distribute it,
8
dnl with or without modifications, as long as this notice is preserved.
10
dnl Written by Paul Eggert.
12
AC_DEFUN([gl_WCTYPE_H],
14
AC_REQUIRE([AC_PROG_CC])
15
AC_REQUIRE([AC_CANONICAL_HOST])
16
AC_CHECK_FUNCS_ONCE([iswcntrl])
17
if test $ac_cv_func_iswcntrl = yes; then
22
AC_SUBST([HAVE_ISWCNTRL])
23
AC_CHECK_FUNCS_ONCE([iswblank])
24
if test $ac_cv_func_iswblank = yes; then
29
AC_SUBST([HAVE_ISWBLANK])
30
AC_CHECK_HEADERS_ONCE([wctype.h])
31
AC_REQUIRE([AC_C_INLINE])
33
AC_REQUIRE([gt_TYPE_WINT_T])
34
if test $gt_cv_c_wint_t = yes; then
39
AC_SUBST([HAVE_WINT_T])
41
if test $ac_cv_header_wctype_h = yes; then
42
if test $ac_cv_func_iswcntrl = yes; then
43
dnl Linux libc5 has an iswprint function that returns 0 for all arguments.
44
dnl The other functions are likely broken in the same way.
45
AC_CACHE_CHECK([whether iswcntrl works], [gl_cv_func_iswcntrl_works],
47
AC_RUN_IFELSE([AC_LANG_SOURCE([[
53
int main () { return iswprint ('x') == 0; }]])],
54
[gl_cv_func_iswcntrl_works=yes], [gl_cv_func_iswcntrl_works=no],
55
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
56
#if __GNU_LIBRARY__ == 1
57
Linux libc5 i18n is broken.
59
[gl_cv_func_iswcntrl_works=yes], [gl_cv_func_iswcntrl_works=no])
63
gl_CHECK_NEXT_HEADERS([wctype.h])
68
AC_SUBST([HAVE_WCTYPE_H])
70
if test "$gl_cv_func_iswcntrl_works" = no; then
75
AC_SUBST([REPLACE_ISWCNTRL])
added
removed
m4/wctype_h.m4
