2 dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 AC_DEFUN([gl_SEARCH_H],
9 AC_REQUIRE([gl_SEARCH_H_DEFAULTS])
10 AC_CHECK_HEADERS_ONCE([search.h])
11 gl_CHECK_NEXT_HEADERS([search.h])
12 if test $ac_cv_header_search_h = yes; then
17 AC_SUBST([HAVE_SEARCH_H])
19 dnl Check for declarations of anything we want to poison if the
20 dnl corresponding gnulib module is not in use.
21 gl_WARN_ON_USE_PREPARE([[#include <search.h>
22 ]], [tdelete tfind tsearch twalk])
25 AC_DEFUN([gl_SEARCH_MODULE_INDICATOR],
27 dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
28 AC_REQUIRE([gl_SEARCH_H_DEFAULTS])
29 gl_MODULE_INDICATOR_SET_VARIABLE([$1])
30 dnl Define it also as a C macro, for the benefit of the unit tests.
31 gl_MODULE_INDICATOR_FOR_TESTS([$1])
34 AC_DEFUN([gl_SEARCH_H_DEFAULTS],
36 GNULIB_TSEARCH=0; AC_SUBST([GNULIB_TSEARCH])
37 dnl Assume proper GNU behavior unless another module says otherwise.
38 HAVE_TSEARCH=1; AC_SUBST([HAVE_TSEARCH])
39 REPLACE_TSEARCH=0; AC_SUBST([REPLACE_TSEARCH])