mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-24 07:20:37 +00:00
55 lines
1.8 KiB
Plaintext
55 lines
1.8 KiB
Plaintext
# xattr.m4
|
|
# serial 7
|
|
dnl Copyright (C) 2003-2024 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.
|
|
|
|
# Check for Extended Attributes (Linux)
|
|
|
|
AC_DEFUN([gl_FUNC_XATTR],
|
|
[
|
|
AC_ARG_ENABLE([xattr],
|
|
AS_HELP_STRING([[--disable-xattr]],
|
|
[do not support extended attributes]),
|
|
[use_xattr=$enableval], [use_xattr=yes])
|
|
|
|
LIB_XATTR=
|
|
AC_SUBST([LIB_XATTR])
|
|
|
|
if test "$use_xattr" = yes; then
|
|
AC_CACHE_CHECK([for xattr library with ATTR_ACTION_PERMISSIONS],
|
|
[gl_cv_xattr_lib],
|
|
[gl_cv_xattr_lib=no
|
|
AC_LANG_CONFTEST(
|
|
[AC_LANG_PROGRAM(
|
|
[[#include <attr/error_context.h>
|
|
#include <attr/libattr.h>
|
|
static int
|
|
is_attr_permissions (const char *name, struct error_context *ctx)
|
|
{
|
|
return attr_copy_action (name, ctx) == ATTR_ACTION_PERMISSIONS;
|
|
}
|
|
]],
|
|
[[return attr_copy_fd ("/", 0, "/", 0, is_attr_permissions, 0);
|
|
]])])
|
|
AC_LINK_IFELSE([],
|
|
[gl_cv_xattr_lib='none required'],
|
|
[xattr_saved_LIBS=$LIBS
|
|
LIBS="-lattr $LIBS"
|
|
AC_LINK_IFELSE([], [gl_cv_xattr_lib=-lattr])
|
|
LIBS=$xattr_saved_LIBS])])
|
|
if test "$gl_cv_xattr_lib" = no; then
|
|
AC_MSG_WARN([libattr development library was not found or not usable.])
|
|
AC_MSG_WARN([AC_PACKAGE_NAME will be built without xattr support.])
|
|
use_xattr=no
|
|
elif test "$gl_cv_xattr_lib" != 'none required'; then
|
|
LIB_XATTR=$gl_cv_xattr_lib
|
|
fi
|
|
fi
|
|
if test "$use_xattr" = yes; then
|
|
AC_DEFINE([USE_XATTR], [1],
|
|
[Define to 1 to use the Linux extended attributes library.])
|
|
fi
|
|
])
|