1 # getsubopt.m4 serial 5
2 dnl Copyright (C) 2004, 2007, 2009-2020 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_FUNC_GETSUBOPT],
9 dnl Persuade glibc <stdlib.h> to declare getsubopt().
10 AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
12 AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
13 AC_CHECK_FUNCS_ONCE([getsubopt])
14 if test $ac_cv_func_getsubopt = no; then
19 # Prerequisites of lib/getsubopt.c.
20 AC_DEFUN([gl_PREREQ_GETSUBOPT], [:])