1 # acl.m4 - check for access control list (ACL) primitives
4 # Copyright (C) 2002, 2004-2008 Free Software Foundation, Inc.
5 # This file is free software; the Free Software Foundation
6 # gives unlimited permission to copy and/or distribute it,
7 # with or without modifications, as long as this notice is preserved.
9 # Written by Paul Eggert and Jim Meyering.
11 AC_DEFUN([gl_FUNC_ACL],
14 AS_HELP_STRING([--disable-acl], [do not support ACLs]),
19 AC_REQUIRE([AC_C_INLINE])
20 if test "x$enable_acl" != "xno"; then
21 dnl Prerequisites of lib/acl.c.
22 AC_CHECK_HEADERS(sys/acl.h)
23 if test $ac_cv_header_sys_acl_h = yes; then
27 AC_SEARCH_LIBS([acl_trivial], [sec],
28 [test "$ac_cv_search_acl_trivial" = "none required" ||
29 LIB_ACL=$ac_cv_search_acl_trivial
30 AC_CHECK_FUNCS([acl_trivial])],
31 [AC_CHECK_FUNCS([acl_trivial])
32 if test $ac_cv_func_acl_trivial != yes; then
33 dnl -lacl is needed on Linux, -lpacl is needed on OSF/1.
34 AC_SEARCH_LIBS([acl_get_file], [acl pacl],
35 [test "$ac_cv_search_acl_get_file" = "none required" ||
36 LIB_ACL=$ac_cv_search_acl_get_file
38 [acl_get_file acl_get_fd acl_set_file acl_set_fd \
39 acl_free acl_from_mode acl_from_text \
40 acl_delete_def_file acl_extended_file \
41 acl_delete_fd_np acl_delete_file_np \
42 acl_copy_ext_native acl_create_entry_np \
43 acl_to_short_text acl_free_text])
44 if test $ac_cv_func_acl_get_file = yes; then
45 # If the acl_get_file bug is detected, disable all ACL support.
46 gl_ACL_GET_FILE( , [use_acl=0])
48 if test $use_acl = 1; then
49 AC_CHECK_HEADERS([acl/libacl.h])
50 if test $ac_cv_func_acl_get_file = yes &&
51 test $ac_cv_func_acl_free = yes; then
52 AC_REPLACE_FUNCS([acl_entries])
60 if test "x$enable_acl$use_acl" = "xyes0"; then
61 AC_MSG_ERROR([ACLs enabled but support not detected])
65 AC_DEFINE_UNQUOTED([USE_ACL], [$use_acl],
66 [Define to nonzero if you want access control list support.])
68 # This is for backwards compatibility; remove this by the end of 2007.
70 AC_SUBST([LIB_ACL_TRIVIAL])
73 # gl_ACL_GET_FILE(IF-WORKS, IF-NOT)
74 # -------------------------------------
75 # If `acl_get_file' works (does not have a particular bug),
76 # run IF-WORKS, otherwise, IF-NOT.
77 # This tests for a Darwin 8.7.0 bug, whereby acl_get_file returns NULL,
78 # but sets errno = ENOENT for an existing file or directory.
79 AC_DEFUN([gl_ACL_GET_FILE],
81 AC_CACHE_CHECK([for working acl_get_file], gl_cv_func_working_acl_get_file,
84 [[#include <sys/types.h>
88 [[return !! (!acl_get_file (".", ACL_TYPE_ACCESS)
89 && errno == ENOENT);]])],
90 [gl_cv_func_working_acl_get_file=yes],
91 [gl_cv_func_working_acl_get_file=no],
92 [gl_cv_func_working_acl_get_file=cross-compiling])])
94 AS_IF([test $gl_cv_func_working_acl_get_file = yes], [$1], [$2])