1 # getusershell.m4 serial 6
2 dnl Copyright (C) 2002-2003, 2006, 2008-2010 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_FUNC_GETUSERSHELL],
9 AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
11 dnl Persuade glibc <unistd.h> to declare {get,set,end}usershell().
12 AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
14 dnl Check whether the getusershell function exists.
15 AC_CHECK_FUNCS_ONCE([getusershell])
16 if test $ac_cv_func_getusershell = yes; then
17 dnl Check whether getusershell is declared.
18 AC_CHECK_DECLS([getusershell])
19 if test $ac_cv_have_decl_getusershell = no; then
20 HAVE_DECL_GETUSERSHELL=0
23 AC_LIBOBJ([getusershell])
24 dnl Assume that on platforms which declare it, the function exists.
25 HAVE_DECL_GETUSERSHELL=0