1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
# iswblank.m4
# serial 7
dnl Copyright (C) 2011-2025 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.
dnl This file is offered as-is, without any warranty.
AC_DEFUN([gl_FUNC_ISWBLANK],
[
AC_REQUIRE([gl_WCTYPE_H_DEFAULTS])
AC_REQUIRE([gl_WCTYPE_H])
dnl Persuade glibc <wctype.h> to declare iswblank().
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
gl_CHECK_FUNCS_ANDROID([iswblank], [[#include <wctype.h>]])
AC_CHECK_DECLS([iswblank], , , [[
#include <wchar.h>
#include <wctype.h>
]])
if test $ac_cv_func_iswblank = no; then
HAVE_ISWBLANK=0
if test $ac_cv_have_decl_iswblank = yes \
|| case "$gl_cv_onwards_func_iswblank" in \
future*) true ;; \
*) false ;; \
esac; then
REPLACE_ISWBLANK=1
fi
fi
if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
dnl Redefine all of iswcntrl, ..., towupper in <wctype.h>.
:
else
if test $HAVE_ISWBLANK = 0 || test $REPLACE_ISWBLANK = 1; then
dnl Redefine only iswblank.
:
fi
fi
])
|
