path: root/source3/wscript

#! /usr/bin/env python

srcdir = '..'
blddir = 'bin'

APPNAME='samba'
VERSION=None

import sys, os
from optparse import SUPPRESS_HELP
sys.path.insert(0, srcdir+"/buildtools/wafsamba")
import wafsamba, Options
import build.charset
import samba_utils, samba_version
import samba3

def set_options(opt):
    opt.BUILTIN_DEFAULT('NONE')
    opt.PRIVATE_EXTENSION_DEFAULT('s3')
    opt.RECURSE('../lib/replace')
    opt.RECURSE('build')
    opt.RECURSE('selftest')
    opt.RECURSE('../lib/nss_wrapper')
    opt.RECURSE('../lib/socket_wrapper')
    opt.RECURSE('../lib/tevent')
    opt.RECURSE('../lib/tdb')

    opt.add_option('--with-static-modules',
                   help=("Comma-separated list of names of modules to statically link in"),
                   action="store", dest='static_modules', default=None)
    opt.add_option('--with-shared-modules',
                   help=("Comma-separated list of names of modules to build shared"),
                   action="store", dest='shared_modules', default=None)
    opt.add_option('--enable-selftest',
                  help=("enable options necessary for selftest"),
                  action="store_true", dest='enable_selftest', default=False)

    opt.SAMBA3_ADD_OPTION('winbind')
    opt.SAMBA3_ADD_OPTION('swat')
    opt.SAMBA3_ADD_OPTION('ads')
    opt.SAMBA3_ADD_OPTION('krb5')
    opt.SAMBA3_ADD_OPTION('ldap')
    opt.SAMBA3_ADD_OPTION('cups', with_name="enable", without_name="disable")
    opt.SAMBA3_ADD_OPTION('merged-build', with_name="enable", without_name="disable")
    opt.SAMBA3_ADD_OPTION('pam')
    opt.SAMBA3_ADD_OPTION('quotas')
    opt.SAMBA3_ADD_OPTION('sys-quotas')
    opt.SAMBA3_ADD_OPTION('sendfile-support')
    opt.SAMBA3_ADD_OPTION('utmp')
    opt.SAMBA3_ADD_OPTION('pthreadpool', with_name="enable", without_name="disable")
    opt.SAMBA3_ADD_OPTION('avahi', with_name="enable", without_name="disable")
    opt.SAMBA3_ADD_OPTION('iconv')
    opt.SAMBA3_ADD_OPTION('acl-support')
    opt.SAMBA3_ADD_OPTION('dnsupdate')


def configure(conf):
    from samba_utils import TO_LIST

    version = samba_version.load_version(env=conf.env)

    conf.DEFINE('CONFIG_H_IS_FROM_SAMBA', 1)
    conf.DEFINE('_SAMBA_BUILD_', version.MAJOR, add_to_cflags=True)
    conf.DEFINE('HAVE_CONFIG_H', 1, add_to_cflags=True)

    if Options.options.developer:
        conf.ADD_CFLAGS('-DDEVELOPER -DDEBUG_PASSWORD')
        conf.env['developer'] = True

    if Options.options.with_swat:
        conf.env['build_swat'] = True

    conf.ADD_EXTRA_INCLUDES('''#source3 #source3/include #lib/replace #lib/talloc
                               #lib/tevent #lib/addns #source3/librpc
                               #source3/lib #lib/tdb/include #lib/popt''')

    conf.RECURSE('../lib/replace')
    conf.RECURSE('build')
    conf.RECURSE('../lib/tdb')
    conf.RECURSE('../lib/talloc')
    conf.RECURSE('../lib/tevent')
    conf.RECURSE('../lib/popt')
    conf.RECURSE('../lib/nss_wrapper')
    conf.RECURSE('../lib/socket_wrapper')
    conf.RECURSE('../lib/zlib')
    conf.RECURSE('../libcli/smbreadline')

    conf.ADD_LDFLAGS("-Wl,--export-dynamic", testflags=True)

    conf.CHECK_HEADERS('execinfo.h libexc.h libunwind.h netdb.h')
    conf.CHECK_HEADERS('linux/falloc.h')

    conf.CHECK_FUNCS('getcwd fchown chmod fchmod mknod mknod64')
    conf.CHECK_FUNCS('strtol strchr strupr chflags')
    conf.CHECK_FUNCS('getrlimit fsync fdatasync setpgid')
    conf.CHECK_FUNCS('setsid glob strpbrk crypt16 getauthuid')
    conf.CHECK_FUNCS('sigprocmask sigblock sigaction sigset innetgr')
    conf.CHECK_FUNCS('initgroups select poll rdchk getgrnam getgrent pathconf')
    conf.CHECK_FUNCS('setpriv setgidx setuidx setgroups sysconf stat64 fstat64')
    conf.CHECK_FUNCS('lstat64 fopen64 atexit grantpt lseek64 ftruncate64 fallocate fallocate64 posix_fallocate posix_fallocate64')
    conf.CHECK_FUNCS('fseek64 fseeko64 ftell64 ftello64 setluid')
    conf.CHECK_FUNCS('getpwnam', headers='sys/types.h pwd.h')
    conf.CHECK_FUNCS('opendir64 readdir64 seekdir64 telldir64 rewinddir64 closedir64')
    conf.CHECK_FUNCS('getpwent_r getdents64 setenv strcasecmp fcvt fcvtl')
    conf.CHECK_FUNCS('syslog vsyslog timegm setlocale nl_langinfo')
    conf.CHECK_FUNCS_IN('nanosleep', 'rt')
    conf.CHECK_FUNCS('lutimes futimes utimensat futimens')
    conf.CHECK_FUNCS('mlock munlock mlockall munlockall')
    conf.CHECK_FUNCS('memalign posix_memalign hstrerror')
    conf.CHECK_FUNCS('shmget')
    conf.CHECK_FUNCS_IN('shm_open', 'rt', checklibc=True)
    conf.CHECK_FUNCS('gettext dgettext bindtextdomain textdomain')
    #FIXME: for some reason this one still fails
    conf.CHECK_FUNCS_IN('yp_get_default_domain', 'nsl')
    conf.CHECK_FUNCS_IN('dn_expand _dn_expand __dn_expand', 'resolv')
    conf.CHECK_DECLS('fdatasync', reverse=True)
    conf.CHECK_DECLS('readahead', reverse=True, headers='fcntl.h')

    if conf.CONFIG_SET('HAVE_LONG_LONG'):
        conf.DEFINE('HAVE_LONGLONG', 1)

    if conf.CHECK_CODE('''
#if defined(HAVE_UNISTD_H)
#include <unistd.h>
#endif
long ret = splice(0,0,1,0,400,0);
''',
        'HAVE_LINUX_SPLICE',
        headers='fcntl.h'):
        conf.CHECK_DECLS('splice', reverse=True, headers='fcntl.h')

    # Check for inotify support
    conf.CHECK_HEADERS('linux/inotify.h asm/unistd.h sys/inotify.h')
    conf.CHECK_FUNCS('inotify_init')
    if "HAVE_LINUX_INOTIFY_H" in conf.env and "HAVE_INOTIFY_INIT" in conf.env:
        conf.DEFINE('HAVE_INOTIFY', 1)

    # Check for kernel change notify support
    conf.CHECK_CODE('''
#ifndef F_NOTIFY
#define F_NOTIFY 1026
#endif
main() {
        exit(fcntl(open("/tmp", O_RDONLY), F_NOTIFY, 0) == -1 ?  1 : 0);
}''', 'HAVE_KERNEL_CHANGE_NOTIFY', addmain=False, execute=True,
        headers='fcntl.h signal.h',
        msg="Checking for kernel change notify support")

    # Check for Linux kernel oplocks
    conf.CHECK_CODE('''
#include <sys/types.h>
#include <fcntl.h>
#include <signal.h>
#ifndef F_NOTIFY
#define F_NOTIFY 1026
#endif
main() {
        exit(fcntl(open("/tmp", O_RDONLY), F_NOTIFY, 0) == -1 ?  1 : 0);
}''', 'HAVE_KERNEL_OPLOCKS_LINUX', addmain=False, execute=True,
        msg="Checking for Linux kernel oplocks")

    # Check for IRIX kernel oplock types
    conf.CHECK_CODE('oplock_stat_t t; t.os_state = OP_REVOKE; t.os_dev = 1; t.os_ino = 1;',
                    'HAVE_KERNEL_OPLOCKS_IRIX', headers='fcntl.h',
                    msg="Checking for IRIX kernel oplock types")

    # Check for krenel share modes
    conf.CHECK_CODE('''
#include <sys/types.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/file.h>
#ifndef LOCK_MAND
#define LOCK_MAND	32
#define LOCK_READ	64
#endif
main() {
        exit(flock(open("/dev/null", O_RDWR), LOCK_MAND|LOCK_READ) != 0);
}''', 'HAVE_KERNEL_SHARE_MODES', addmain=False, execute=True,
        msg="Checking for krenel share modes")

    # Check for various members of the stat structure
    conf.CHECK_TYPES('blksize_t blkcnt_t')
    conf.CHECK_STRUCTURE_MEMBER('struct stat', 'st_blocks', define='HAVE_STAT_ST_BLOCKS',
                                headers='sys/stat.h')
    conf.CHECK_STRUCTURE_MEMBER('struct stat', 'st_blksize', define='HAVE_STAT_ST_BLKSIZE',
                                headers='sys/stat.h')

    # Check for POSIX capability support
    conf.CHECK_FUNCS_IN('cap_get_proc', 'cap', headers='sys/capability.h')

    if "HAVE_SYS_CAPABILITY_H" in conf.env:
        conf.CHECK_CODE('''
        cap_t cap;
        cap_value_t vals[1];
        if (!(cap = cap_get_proc())) exit(1);
        vals[0] = CAP_CHOWN;
        cap_set_flag(cap, CAP_INHERITABLE, 1, vals, CAP_CLEAR);
        cap_set_proc(cap);''',
                        'HAVE_POSIX_CAPABILITIES', execute=True, lib="cap",
                        headers='sys/capability.h',
                        msg="Checking whether POSIX capabilities are available")

    # Check for int16, uint16, int32 and uint32 in rpc/types.h included from
    # rpc/rpc.h. This is *really* broken but some systems (DEC OSF1) do this.
    # -- JRA.
    if conf.CONFIG_SET("HAVE_RPC_RPC_H"):
        conf.CHECK_TYPE('int16', headers='rpc/rpc.h',
                        define='HAVE_INT16_FROM_RPC_RPC_H',
                        msg="Checking for int16 typedef included by rpc/rpc.h")
        conf.CHECK_CODE('uint16 testvar;', 'HAVE_INT16_FROM_RPC_RPC_H',
                        headers='sys/types.h rpc/rpc.h',
                        msg="Checking for uint16 typedef included by rpc/rpc.h")
        conf.CHECK_CODE('int32 testvar;', 'HAVE_INT16_FROM_RPC_RPC_H',
                        headers='sys/types.h rpc/rpc.h',
                        msg="Checking for int32 typedef included by rpc/rpc.h")
        conf.CHECK_CODE('uint32 testvar;', 'HAVE_INT16_FROM_RPC_RPC_H',
                        headers='sys/types.h rpc/rpc.h',
                        msg="Checking for uint32 typedef included by rpc/rpc.h")
    conf.CHECK_CODE('int i;', 'BROKEN_NISPLUS_INCLUDE_FILES',
                    headers='sys/types.h sys/acl.h rpcsvc/nis.h',
                    msg="Checking for broken nisplus include files")

    # Check if the compiler will optimize out functions
    conf.CHECK_CODE('''
if (0) {
    this_function_does_not_exist();
} else {
    return 1;
}''', 'HAVE_COMPILER_WILL_OPTIMIZE_OUT_FNS',
        msg="Checking if the compiler will optimize out functions")

    # Check if the compiler supports the LL suffix on long long integers
    # AIX needs this
    conf.CHECK_CODE('long long i = 0x8000000000LL', 'COMPILER_SUPPORTS_LL',
                    headers='stdio.h',
                    msg="Checking for LL suffix on long long integers")

    conf.CHECK_FUNCS('''
_acl __acl add_proplist_entry atexit attr_getf attr_list attr_listf
attropen attr_remove attr_removef attr_set attr_setf backtrace_symbols
bindtextdomain _chdir __chdir chflags chmod _close __close _closedir
__closedir closedir64 creat64 crypt16 delproplist devnm dgettext dirfd
DNSServiceRegister _dup __dup _dup2 __dup2 endmntent execl
extattr_delete_fd extattr_delete_link extattr_get_fd extattr_get_file
extattr_get_link extattr_list_fd extattr_list_file extattr_list_link
extattr_set_fd extattr_set_file extattr_set_link _facl __facl _fchdir
__fchdir fchmod fchown _fcntl __fcntl fcvt fcvtl fdatasync
fdelproplist fgetea fgetproplist fgetxattr flistea flistxattr fopen64
_fork __fork fremoveea fremovexattr fseek64 fseeko64 fsetea
fsetproplist fsetxattr _fstat __fstat fstat64 _fstat64 __fstat64 fsync
ftell64 ftello64 ftruncate64 futimens futimes __fxstat getauthuid
getcwd _getcwd __getcwd getdents __getdents getdents64 getdirentries
getgrent getgrnam getgrouplist getmntent getpagesize
getproplist get_proplist_entry getpwanam getpwent_r getrlimit gettext
glob grantpt hstrerror initgroups innetgr
inotify_init lgetea lgetxattr listea listxattr llistea llistxattr
llseek _llseek __llseek lremoveea lremovexattr _lseek __lseek lseek64
lsetea lsetxattr _lstat __lstat lstat64 _lstat64 __lstat64 lutimes
__lxstat memalign mknod mknod64 mlock mlockall munlock munlockall
nl_langinfo _open __open open64 _open64 __open64 _opendir __opendir
opendir64 pathconf poll posix_fallocate posix_fallocate64
posix_memalign prctl pread _pread __pread pread64 _pread64 __pread64
pwrite _pwrite __pwrite pwrite64 _pwrite64
__pwrite64 rdchk _read __read _readdir __readdir readdir64 _readdir64
__readdir64 removeea removexattr rewinddir64 _seekdir __seekdir
seekdir64 select setea setenv setgidx setgroups setlocale setluid
setmntent setpgid setpriv setproplist setsid setuidx
setxattr shmget shm_open sigaction sigblock sigprocmask sigset
sizeof_proplist_entry _stat __stat stat64 _stat64 __stat64 statvfs
strcasecmp strchr strpbrk strsignal strtol strupr sysconf sysctlbyname
__sys_llseek syslog _telldir __telldir telldir64 textdomain timegm
utimensat vsyslog _write __write __xstat
''')

    conf.CHECK_TYPE('struct timespec', headers='sys/time.h time.h')

    conf.CHECK_SAMBA3_CHARSET() # see build/charset.py

    # FIXME: these should be tests for features, but the old build system just
    # checks for OSes.
    import sys
    host_os = sys.platform

    # Python doesn't have case switches... :/
    # FIXME: original was *linux* | gnu* | k*bsd*-gnu | kopensolaris*-gnu | *qnx*)
    # the search for .rfind('gnu') covers gnu* and *-gnu is that too broad?

    conf.SET_TARGET_TYPE('sunacl', 'EMPTY')
    if (host_os.rfind('linux') > -1) or (host_os.rfind('gnu') > -1) or (host_os.rfind('qnx') > -1):
        if host_os.rfind('linux') > -1:
            conf.DEFINE('LINUX', '1')
        elif host_os.rfind('qnx') > -1:
            conf.DEFINE('QNX', '1')
        conf.DEFINE('STAT_ST_BLOCKSIZE', '512')
    elif (host_os.rfind('darwin') > -1):
        conf.DEFINE('DARWINOS', 1)
        conf.DEFINE('STAT_ST_BLOCKSIZE', '512')
        conf.ADD_CFLAGS('-fno-common')
    elif (host_os.rfind('freebsd') > -1):
        if conf.CHECK_HEADERS('sunacl.h'):
            conf.define('HAVE_FREEBSD_SUNACL_H', '1')
            conf.CHECK_FUNCS_IN('acl', 'sunacl')
    # FIXME: Add more checks here.
    else:
        print "Unknown host_os '%s', please report this to samba-technical@samba.org" % host_os

    #FIXME: add more checks
    if Options.options.with_acl_support:
        if host_os.rfind('linux') > -1:
	    conf.CHECK_FUNCS_IN('acl_get_file', 'acl')
	    conf.CHECK_FUNCS_IN('getxattr', 'attr')
            if conf.CHECK_CODE('''
acl_t acl;
int entry_id;
acl_entry_t *entry_p;
return acl_get_entry(acl, entry_id, entry_p);
''',
                        'HAVE_POSIX_ACLS',
                        headers='sys/types.h sys/acl.h', link=False,
			msg="Checking for POSIX ACL support") :
                conf.CHECK_CODE('''
acl_permset_t permset_d;
acl_perm_t perm;
return acl_get_perm_np(permset_d, perm);
''',
                        'HAVE_ACL_GET_PERM_NP',
                        headers='sys/types.h sys/acl.h', link=True,
                        msg="Checking whether acl_get_perm_np() is available")
        else:
            conf.DEFINE('HAVE_NO_ACLS', 1)
            conf.SET_TARGET_TYPE('acl', 'EMPTY')
            conf.SET_TARGET_TYPE('attr', 'EMPTY')
    else:
        conf.DEFINE('HAVE_NO_ACLS', 1)
        conf.SET_TARGET_TYPE('acl', 'EMPTY')
        conf.SET_TARGET_TYPE('attr', 'EMPTY')

    if conf.CHECK_FUNCS('dirfd'):
        conf.DEFINE('HAVE_DIRFD_DECL', 1)

    conf.CHECK_CODE('struct statfs fsd; fsid_t fsid = fsd.f_fsid; return statfs(".", &fsd);',
                    'HAVE_STATFS_F_FSID',
                    msg="vfs_fileid: checking for statfs() and struct statfs.f_fsid",
                    headers='sys/types.h sys/statfs.h',
                    execute=True)

    if conf.CONFIG_SET('HAVE_FALLOCATE'):
        conf.CHECK_CODE('''
		#if defined(HAVE_UNISTD_H)
		#include <unistd.h>
		#endif
		#include <sys/types.h>
		#define _GNU_SOURCE
		#include <fcntl.h>
		#if defined(HAVE_LINUX_FALLOC_H)
		#include <linux/falloc.h>
		#endif
		int ret = fallocate(0, FALLOC_FL_KEEP_SIZE, 0, 10);''',
		'HAVE_LINUX_FALLOCATE',
		msg="Checking whether the Linux 'fallocate' function is available")
    if conf.CONFIG_SET('HAVE_FALLOCATE64'):
        conf.CHECK_CODE('''
		#if defined(HAVE_UNISTD_H)
		#include <unistd.h>
		#endif
		#include <sys/types.h>
		#define _GNU_SOURCE
		#include <fcntl.h>
		#if defined(HAVE_LINUX_FALLOC_H)
		#include <linux/falloc.h>
		#endif
		int ret = fallocate64(0, FALLOC_FL_KEEP_SIZE, 0, 10);''',
		'HAVE_LINUX_FALLOCATE64',
		msg="Checking whether the Linux 'fallocate64' function is available")
    conf.CHECK_CODE('''
		#if defined(HAVE_UNISTD_H)
		#include <unistd.h>
		#endif
		#include <fcntl.h>
		ssize_t err = readahead(0,0,0x80000);''',
		'HAVE_LINUX_READAHEAD',
		msg="Checking whether Linux readahead is available")
    conf.CHECK_DECLS('readahead', headers='fcntl.h', always=True)

    conf.CHECK_CODE('''
		#include <sys/types.h>
		#include <sys/socket.h>],
		struct ucred cred;
		socklen_t cred_len;
		int ret = getsockopt(0, SOL_SOCKET, SO_PEERCRED, &cred, &cred_len);''',
		'HAVE_PEERCRED',
		msg="Checking whether we can use SO_PEERCRED to get socket credentials")

    conf.CHECK_CODE('''
		#if defined(HAVE_LONGLONG) && (defined(HAVE_OFF64_T) || (defined(SIZEOF_OFF_T) && (SIZEOF_OFF_T == 8)))
		#include <sys/types.h>
		#else
		__COMPILE_ERROR_
		#endif
		int i;''',
		'HAVE_EXPLICIT_LARGEFILE_SUPPORT',
		msg="Checking whether large file support can be enabled")

    default_static_modules=TO_LIST('''pdb_smbpasswd pdb_tdbsam pdb_wbc_sam pdb_ldap
                                      auth_sam auth_unix auth_winbind auth_wbc auth_server
                                      auth_domain auth_builtin auth_netlogond vfs_default
                                      nss_info_template idmap_ldap idmap_tdb idmap_passdb
                                      idmap_nss''')

    default_shared_modules=TO_LIST('''vfs_recycle vfs_audit vfs_extd_audit vfs_full_audit vfs_netatalk
                                      vfs_fake_perms vfs_default_quota vfs_readonly vfs_cap
                                      vfs_expand_msdfs vfs_shadow_copy vfs_shadow_copy2 charset_CP850
                                      charset_CP437 auth_script vfs_readahead vfs_xattr_tdb
                                      vfs_streams_xattr vfs_streams_depot vfs_acl_xattr vfs_acl_tdb
                                      vfs_smb_traffic_analyzer vfs_preopen vfs_catia vfs_scannedonly
                                      vfs_crossrename vfs_linux_xfs_sgid
                                      vfs_time_audit idmap_autorid''')

    if Options.options.developer:
        default_static_modules.extend(TO_LIST('pdb_ads'))
        default_shared_modules.extend(TO_LIST('charset_weird perfcount_test'))

    if Options.options.with_acl_support and conf.CONFIG_SET('HAVE_POSIX_ACLS'):
        default_static_modules.extend(TO_LIST('vfs_posixacl'))

    if conf.CONFIG_SET('HAVE_FREEBSD_SUNACL_H'):
	default_shared_modules.extend(TO_LIST('vfs_zfsacl'))

    if conf.CONFIG_SET('HAVE_DIRFD_DECL'):
	default_shared_modules.extend(TO_LIST('vfs_syncops vfs_dirsort'))

    if conf.CONFIG_SET('HAVE_STATFS_F_FSID'):
	default_shared_modules.extend(TO_LIST('vfs_fileid'))

    explicit_shared_modules = TO_LIST(Options.options.shared_modules, delimiter=',')
    explicit_static_modules = TO_LIST(Options.options.static_modules, delimiter=',')

    final_static_modules = default_static_modules
    final_shared_modules = default_shared_modules

    for m in explicit_static_modules:
        if m in final_shared_modules:
            final_shared_modules.remove(m)
        final_static_modules.append(m)
    for m in explicit_shared_modules:
        if m in final_static_modules:
            final_static_modules.remove(m)
        final_shared_modules.append(m)

    conf.env['static_modules'] = final_static_modules
    conf.env['shared_modules'] = final_shared_modules

    conf.DEFINE('STRING_STATIC_MODULES', ' '.join(final_static_modules), quote=True)

    static_list = {}
    shared_list = {}

    prefixes = ['vfs', 'pdb', 'auth', 'nss_info', 'charset', 'idmap', 'gpext', 'perfcount']
    conf.env['MODULE_PREFIXES'] = prefixes
    for p in prefixes:
        for m in final_static_modules:
            if m.find(p) == 0:
                if not p in static_list:
                    static_list[p] = []
                static_list[p].append(m)
        for m in final_shared_modules:
            if m.find(p) == 0:
                if not p in shared_list:
                    shared_list[p] = []
                shared_list[p].append(m)

    for p in prefixes:
        static_env = "%s_STATIC" % p.upper()
        shared_env = "%s_SHARED" % p.upper()
        conf.env[static_env] = []
        conf.env[shared_env] = []
        if p in static_list:
            decl_list=""
            for entry in static_list[p]:
                decl_list += "extern NTSTATUS %s_init(void); " % entry
                conf.env[static_env].append('%s' % entry)
            decl_list = decl_list.rstrip()
            conf.DEFINE('static_decl_%s' % p, decl_list)
            conf.DEFINE('static_init_%s' % p, '{ %s_init(); }' % '_init();  '.join(static_list[p]))
        else:
            conf.DEFINE('static_decl_%s' % p, '')
            conf.DEFINE('static_init_%s' % p, '{}')
        if p in shared_list:
            for entry in shared_list[p]:
                conf.DEFINE('%s_init' % entry, 'init_samba_module')
                conf.env[shared_env].append('%s' % entry)

    if Options.options.with_winbind:
        conf.env.build_winbind = True
        conf.DEFINE('WITH_WINBIND', '1')

    conf.find_program('awk', var='AWK')
    conf.find_program('perl', var='PERL')

    # Darwin has extra options to xattr-family functions
    conf.CHECK_CODE('getxattr(0, 0, 0, 0, 0, 0);',
                    'XATTR_ADD_OPT',
                    msg="Checking whether xattr interface takes additional options",
                    headers='sys/types.h attr/xattr.h sys/xattr.h')

    conf.CHECK_HEADERS('asm/types.h')

    conf.CHECK_CODE('dev_t dev; int i = major(dev); return 0', "HAVE_DEVICE_MAJOR_FN",
                    headers='unistd.h sys/types.h',
                    msg="Checking for major macro")

    conf.CHECK_CODE('dev_t dev; int i = minor(dev); return 0', "HAVE_DEVICE_MINOR_FN",
                    headers='unistd.h sys/types.h',
                    msg="Checking for minor macro")

    conf.CHECK_STRUCTURE_MEMBER('struct dirent', 'd_off',
                                headers='unistd.h sys/types.h dirent.h',
                                define='HAVE_DIRENT_D_OFF')

    conf.CHECK_FUNCS('setnetgrent getnetgrent endnetgrent')
    conf.CHECK_CODE('setnetgrent("foo")', 'HAVE_SETNETGRENT_PROTOTYPE',
                    msg="Checking for setnetgrent prototype",
                    headers='netdb.h netgroup.h',
                    cflags="-Werror-implicit-function-declaration")
    conf.CHECK_CODE('getnetgrent', 'HAVE_GETNETGRENT_PROTOTYPE',
                    msg="Checking for getnetgrent prototype",
                    headers='netdb.h netgroup.h',
                    cflags="-Werror-implicit-function-declaration")
    conf.CHECK_CODE('endnetgrent', 'HAVE_ENDNETGRENT_PROTOTYPE',
                    msg="Checking for endnetgrent prototype",
                    headers='netdb.h netgroup.h',
                    cflags="-Werror-implicit-function-declaration")

    #FIXME: Should just be set when krb5 and ldap requirements are fulfilled
    if Options.options.with_ads:
        conf.DEFINE('WITH_ADS', '1')

    # Look for CUPS
    conf.find_program('cups-config', var='CUPS_CONFIG')
    if conf.env.CUPS_CONFIG and Options.options.with_cups:
        conf.check_cfg(path="cups-config", args="--cflags --ldflags --libs",
                       package="", uselib_store="cups")
        conf.CHECK_HEADERS('cups/cups.h cups/language.h', lib='cups')
        conf.CHECK_LIB('cups')
        conf.CHECK_FUNCS_IN('httpConnect httpConnectEncrypt', 'cups')
    else:
        # define an empty subsystem for cups, to allow it to be used as an empty dependency
        conf.SET_TARGET_TYPE('cups', 'EMPTY')

    # Check for LDAP
    if Options.options.with_ldap:
        conf.CHECK_HEADERS('ldap.h lber.h')
        conf.CHECK_TYPE('ber_tag_t', 'unsigned int', headers='ldap.h lber.h')
        conf.CHECK_FUNCS_IN('ber_scanf ber_sockbuf_add_io', 'lber')
        conf.CHECK_VARIABLE('LDAP_OPT_SOCKBUF', headers='ldap.h')
        # if ber_sockbuf_add_io() and LDAP_OPT_SOCKBUF are available, we can add
        # SASL wrapping hooks
        if conf.CONFIG_SET('HAVE_BER_SOCKBUF_ADD_IO') and \
                conf.CONFIG_SET('HAVE_LDAP_OPT_SOCKBUF'):
            conf.DEFINE('HAVE_LDAP_SASL_WRAPPING', '1')

        # if we LBER_OPT_LOG_PRINT_FN we can intercept ldap logging and print it out
        # for the samba logs
        conf.CHECK_VARIABLE('LBER_OPT_LOG_PRINT_FN',
                            define='HAVE_LBER_LOG_PRINT_FN', headers='lber.h')

        conf.CHECK_FUNCS_IN('ldap_init ldap_initialize ldap_set_rebind_proc', 'ldap')
        conf.CHECK_FUNCS_IN('ldap_add_result_entry', 'ldap')

        # Check if ldap_set_rebind_proc() takes three arguments
        if conf.CHECK_CODE('ldap_set_rebind_proc(0, 0, 0)',
                           'LDAP_SET_REBIND_PROC_ARGS',
                           msg="Checking whether ldap_set_rebind_proc takes 3 arguments",
                           headers='ldap.h lber.h', link=False):
            conf.DEFINE('LDAP_SET_REBIND_PROC_ARGS', '3')
        else:
            conf.DEFINE('LDAP_SET_REBIND_PROC_ARGS', '2')

        # last but not least, if ldap_init() exists, we want to use ldap
        if conf.CONFIG_SET('HAVE_LDAP_INIT'):
            conf.DEFINE('HAVE_LDAP', '1')
            conf.DEFINE('LDAP_DEPRECATED', '1')
            conf.env['SMBLDAP'] = 'lib/smbldap.c'
            conf.env['SMBLDAPUTIL'] = 'lib/smbldap_util.c'
    else:
        conf.SET_TARGET_TYPE('ldap', 'EMPTY')
        conf.SET_TARGET_TYPE('lber', 'EMPTY')

    # Check for kerberos
    conf.find_program('krb5-config', var='KRB5_CONFIG')
    if conf.env.KRB5_CONFIG and Options.options.with_krb5:
        conf.check_cfg(path="krb5-config", args="--cflags --libs",
                       package="gssapi", uselib_store="krb5")
        conf.CHECK_HEADERS('krb5.h krb5/locate_plugin.h', lib='krb5')
        conf.CHECK_HEADERS('gssapi.h gssapi/gssapi_generic.h gssapi/gssapi.h gssapi/gssapi_ext.h com_err.h', lib='krb5')

        if conf.CONFIG_SET('HAVE_KRB5_LOCATE_PLUGIN_H'):
            conf.env['WINBIND_KRB5_LOCATOR'] = 'bin/winbind_krb5_locator.so'

        conf.CHECK_FUNCS_IN('_et_list', 'com_err')
        conf.CHECK_FUNCS_IN('krb5_encrypt_data', 'k5crypto')
        conf.CHECK_FUNCS_IN('crypto', 'des_set_key')
        conf.CHECK_FUNCS_IN('copy_Authenticator', 'asn1')
        conf.CHECK_FUNCS_IN('roken_getaddrinfo_hostspec', 'roken')
        if conf.CHECK_FUNCS_IN('gss_display_status', 'gssapi gssapi_krb5'):
            conf.DEFINE('HAVE_GSSAPI', '1')
        conf.CHECK_FUNCS_IN('gss_wrap_iov', 'gssapi gssapi_krb5 krb5')
        conf.CHECK_FUNCS_IN('krb5_mk_req_extended krb5_kt_compare', 'krb5')
        conf.CHECK_FUNCS('''
krb5_set_real_time krb5_set_default_in_tkt_etypes krb5_set_default_tgs_enctypes
krb5_set_default_tgs_ktypes krb5_principal2salt krb5_use_enctype
krb5_string_to_key krb5_get_pw_salt krb5_string_to_key_salt krb5_auth_con_setkey
krb5_auth_con_setuseruserkey krb5_locate_kdc krb5_get_permitted_enctypes
krb5_get_default_in_tkt_etypes krb5_free_data_contents
krb5_principal_get_comp_string krb5_free_unparsed_name
krb5_free_keytab_entry_contents krb5_kt_free_entry krb5_krbhst_init
krb5_krbhst_get_addrinfo krb5_c_enctype_compare krb5_enctypes_compatible_keys
krb5_crypto_init krb5_crypto_destroy krb5_decode_ap_req free_AP_REQ
krb5_verify_checksum krb5_c_verify_checksum krb5_principal_compare_any_realm
krb5_parse_name_norealm krb5_princ_size krb5_get_init_creds_opt_set_pac_request
krb5_get_renewed_creds krb5_get_kdc_cred krb5_free_error_contents
initialize_krb5_error_table krb5_get_init_creds_opt_alloc
krb5_get_init_creds_opt_free krb5_get_init_creds_opt_get_error
krb5_enctype_to_string krb5_fwd_tgt_creds krb5_auth_con_set_req_cksumtype
krb5_get_creds_opt_alloc krb5_get_creds_opt_set_impersonate krb5_get_creds
krb5_get_credentials_for_user krb5_get_host_realm krb5_free_host_realm''',
                         lib='krb5')
        conf.CHECK_DECLS('''krb5_get_credentials_for_user
                            krb5_auth_con_set_req_cksumtype''',
                            headers='krb5.h', always=True)
        conf.CHECK_VARIABLE('AP_OPTS_USE_SUBKEY', headers='krb5.h')
        conf.CHECK_VARIABLE('KV5M_KEYTAB', headers='krb5.h')
        conf.CHECK_VARIABLE('KRB5_KU_OTHER_CKSUM', headers='krb5.h')
        conf.CHECK_VARIABLE('KRB5_KEYUSAGE_APP_DATA_CKSUM', headers='krb5.h')
        conf.CHECK_STRUCTURE_MEMBER('krb5_keytab_entry', 'key', headers='krb5.h',
                                    define='HAVE_KRB5_KEYTAB_ENTRY_KEY')
        conf.CHECK_STRUCTURE_MEMBER('krb5_keytab_entry', 'keyblock', headers='krb5.h',
                                    define='HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK')
        conf.CHECK_STRUCTURE_MEMBER('krb5_address', 'magic', headers='krb5.h',
                                    define='HAVE_MAGIC_IN_KRB5_ADDRESS')
        conf.CHECK_STRUCTURE_MEMBER('krb5_address', 'addrtype', headers='krb5.h',
                                    define='HAVE_ADDRTYPE_IN_KRB5_ADDRESS')
        conf.CHECK_STRUCTURE_MEMBER('krb5_ticket', 'enc_part2', headers='krb5.h',
                                    define='HAVE_KRB5_TKT_ENC_PART2')
        conf.CHECK_STRUCTURE_MEMBER('krb5_creds', 'keyblock', headers='krb5.h',
                                    define='HAVE_KRB5_KEYBLOCK_IN_CREDS')
        conf.CHECK_STRUCTURE_MEMBER('krb5_creds', 'session', headers='krb5.h',
                                    define='HAVE_KRB5_SESSION_IN_CREDS')
        conf.CHECK_STRUCTURE_MEMBER('krb5_ap_req', 'ticket', headers='krb5.h',
                                    define='HAVE_TICKET_POINTER_IN_KRB5_AP_REQ')

        conf.CHECK_TYPE('krb5_encrypt_block', headers='krb5.h')

        conf.CHECK_CODE('''
krb5_ticket ticket;
krb5_kvno kvno;
krb5_enctype enctype;
enctype = ticket.enc_part.enctype;
kvno = ticket.enc_part.kvno;
''',
                        'KRB5_TICKET_HAS_KEYINFO',
                        headers='krb5.h', link=False,
                        msg="Checking whether the krb5_ticket structure contains the kvno and enctype")
        conf.CHECK_CODE('''
krb5_context ctx;
krb5_get_init_creds_opt *opt = NULL;
krb5_get_init_creds_opt_free(ctx, opt);
''',
                        'KRB5_CREDS_OPT_FREE_REQUIRES_CONTEXT',
                        headers='krb5.h', link=False,
                        msg="Checking whether krb5_get_init_creds_opt_free takes a context argument")
        conf.CHECK_CODE('krb5_mk_error(0,0,0)',
                        'HAVE_SHORT_KRB5_MK_ERROR_INTERFACE',
                        headers='krb5.h', link=False,
                        msg="Checking whether krb5_mk_error takes 3 arguments MIT or 9 Heimdal")
        conf.CHECK_CODE('''
const krb5_data *pkdata;
krb5_context context;
krb5_principal principal;
pkdata = krb5_princ_component(context, principal, 0);
''',
                        'HAVE_KRB5_PRINC_COMPONENT',
                        headers='krb5.h', lib='krb5',
                        msg="Checking whether krb5_princ_component is available")

        conf.CHECK_CODE('''
int main(void) {
char buf[256];
krb5_enctype_to_string(1, buf, 256);
return 0;
}''',
                        'HAVE_KRB5_ENCTYPE_TO_STRING_WITH_SIZE_T_ARG',
                        headers='krb5.h', lib='krb5',
                        addmain=False, cflags='-Werror',
                        msg="Checking whether krb5_enctype_to_string takes size_t argument")

        conf.CHECK_CODE('''
int main(void) {
krb5_context context = NULL;
char *str = NULL;
krb5_enctype_to_string(context, 1, &str);
if (str) free (str);
return 0;
}''',
                        'HAVE_KRB5_ENCTYPE_TO_STRING_WITH_KRB5_CONTEXT_ARG',
                        headers='krb5.h stdlib.h', lib='krb5',
                        addmain=False, cflags='-Werror',
                        msg="Checking whether krb5_enctype_to_string takes krb5_context argument")
        conf.CHECK_CODE('''
int main(void) {
krb5_context ctx = NULL;
krb5_principal princ = NULL;
const char *str = krb5_princ_realm(ctx, princ)->data;
return 0;
}''',
                        'HAVE_KRB5_PRINC_REALM',
                        headers='krb5.h', lib='krb5',
                        addmain=False,
                        msg="Checking whether the macro krb5_princ_realm is defined")
        if conf.CHECK_CODE('''krb5_verify_checksum(0, 0, 0, 0, 0, 0, 0);''',
                        'KRB5_VERIFY_CHECKSUM_ARGS',
                        headers='krb5.h', lib='krb5',
			msg="Checking whether krb5_verify_checksum takes 7 arguments"):
            conf.DEFINE('KRB5_VERIFY_CHECKSUM_ARGS', '7')
	else:
            conf.DEFINE('KRB5_VERIFY_CHECKSUM_ARGS', '6')

	conf.CHECK_CODE('''
krb5_enctype enctype;
enctype = ENCTYPE_ARCFOUR_HMAC_MD5;
''',
            '_HAVE_ENCTYPE_ARCFOUR_HMAC_MD5',
            headers='krb5.h', lib='krb5',
            msg="Checking whether the ENCTYPE_ARCFOUR_HMAC_MD5 key type definition is available");
	conf.CHECK_CODE('''
krb5_keytype keytype;
keytype = KEYTYPE_ARCFOUR_56;
''',
            '_HAVE_KEYTYPE_ARCFOUR_56',
            headers='krb5.h', lib='krb5',
            msg="Checking whether the HAVE_KEYTYPE_ARCFOUR_56 key type definition is available");
	if conf.CONFIG_SET('_HAVE_ENCTYPE_ARCFOUR_HMAC_MD5') and conf.CONFIG_SET('_HAVE_KEYTYPE_ARCFOUR_56'):
            conf.DEFINE('HAVE_ENCTYPE_ARCFOUR_HMAC_MD5', '1')

	conf.CHECK_CODE('''
krb5_enctype enctype;
enctype = ENCTYPE_ARCFOUR_HMAC;
''',
            'HAVE_ENCTYPE_ARCFOUR_HMAC',
            headers='krb5.h', lib='krb5',
            msg="Checking whether the ENCTYPE_ARCFOUR_HMAC key type definition is available");

	conf.CHECK_CODE('''
krb5_context context;
krb5_keytab keytab;
krb5_init_context(&context);
return krb5_kt_resolve(context, "WRFILE:api", &keytab);
''',
            'HAVE_WRFILE_KEYTAB',
            headers='krb5.h', lib='krb5', execute=True,
            msg="Checking whether the WRFILE:-keytab is supported");

        conf.DEFINE('HAVE_KRB5', '1')

    else:
        conf.SET_TARGET_TYPE('krb5', 'EMPTY')
        conf.SET_TARGET_TYPE('gssapi', 'EMPTY')
        conf.SET_TARGET_TYPE('gssapi_krb5', 'EMPTY')
        conf.SET_TARGET_TYPE('com_err', 'EMPTY')
        conf.SET_TARGET_TYPE('k5crypto', 'EMPTY')

    if Options.options.with_utmp:
        conf.CHECK_FUNCS('pututline pututxline updwtmp updwtmpx getutmpx getutxent')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_name', headers='utmp.h',
                                    define='HAVE_UT_UT_NAME')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_user', headers='utmp.h',
                                    define='HAVE_UT_UT_USER')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_id', headers='utmp.h',
                                    define='HAVE_UT_UT_ID')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_host', headers='utmp.h',
                                    define='HAVE_UT_UT_HOST')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_time', headers='utmp.h',
                                    define='HAVE_UT_UT_TIME')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_tv', headers='utmp.h',
                                    define='HAVE_UT_UT_TV')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_type', headers='utmp.h',
                                    define='HAVE_UT_UT_TYPE')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_pid', headers='utmp.h',
                                    define='HAVE_UT_UT_PID')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_exit.e_exit', headers='utmp.h',
                                    define='HAVE_UT_UT_EXIT')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_addr_v6', headers='utmp.h',
                                    define='HAVE_UT_UT_ADDR_V6')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_addr', headers='utmp.h',
                                    define='HAVE_UT_UT_ADDR')
        conf.CHECK_STRUCTURE_MEMBER('struct utmpx', 'ut_syslen', headers='utmpx.h',
                                    define='HAVE_UX_UT_SYSLEN')
        conf.CHECK_CODE('struct utmp utarg; struct utmp *utreturn; utreturn = pututline(&utarg);',
                        'PUTUTLINE_RETURNS_UTMP', headers='utmp.h',
                        msg="Checking whether pututline returns pointer")
        conf.DEFINE('WITH_UTMP', 1)

    if Options.options.with_avahi:
        conf.env.with_avahi = True
        if not conf.CHECK_HEADERS('avahi-common/watch.h avahi-client/client.h'): conf.env.with_avahi = False
        if not conf.CHECK_FUNCS_IN('avahi_client_new', 'avahi-client'): conf.env.with_avahi = False
        if not conf.CHECK_FUNCS_IN('avahi_strerror', 'avahi-common'): conf.env.with_avahi = False
        if conf.env.with_avahi:
            conf.DEFINE('WITH_AVAHI_SUPPORT', 1)
    else:
        conf.SET_TARGET_TYPE('avahi-common', 'EMPTY')
        conf.SET_TARGET_TYPE('avahi-client', 'EMPTY')

    if Options.options.with_iconv:
        conf.env.with_iconv = True
        if not conf.CHECK_FUNCS_IN('iconv_open', 'iconv', headers='iconv.h'):
            conf.env.with_iconv = False
        if conf.env.with_iconv:
            conf.DEFINE('HAVE_ICONV', 1)

    if Options.options.with_pam:
        conf.CHECK_HEADERS('security/pam_appl.h pam/pam_appl.h')
        if not conf.CONFIG_SET('HAVE_SECURITY_PAM_APPL_H') and not conf.CONFIG_SET('HAVE_PAM_PAM_APPL_H'):
            print "--with-pam=yes but pam_appl.h not found"
            sys.exit(1)
        conf.CHECK_FUNCS_IN('pam_get_data', 'pam', mandatory=True)
	conf.CHECK_HEADERS('security/pam_modules.h pam/pam_modules.h')
	if not conf.CONFIG_SET('HAVE_SECURITY_PAM_MODULES_H') and not conf.CONFIG_SET('HAVE_PAM_PAM_MODULES_H'):
            print "--with-pam=yes but pam_modules.h not found"
            sys.exit(1)
        conf.CHECK_HEADERS('security/pam_ext.h security/_pam_macros.h')
        conf.CHECK_HEADERS('pam/pam_ext.h pam/_pam_macros.h')
        conf.CHECK_FUNCS_IN('pam_vsyslog', 'pam')
	conf.CHECK_CODE('''
#if defined(HAVE_SECURITY_PAM_APPL_H)
#include <security/pam_appl.h>
#elif defined(HAVE_PAM_PAM_APPL_H)
#include <pam/pam_appl.h>
#endif
pam_set_item(0, PAM_RHOST, 0);
''',
            'HAVE_PAM_RHOST',
            lib='pam',
            msg="Checking whether PAM_RHOST is available");
	conf.CHECK_CODE('''
#if defined(HAVE_SECURITY_PAM_APPL_H)
#include <security/pam_appl.h>
#elif defined(HAVE_PAM_PAM_APPL_H)
#include <pam/pam_appl.h>
#endif
pam_set_item(0, PAM_TTY, 0);
''',
            'HAVE_PAM_TTY',
            lib='pam',
            msg="Checking whether PAM_TTY is available");
	conf.CHECK_CODE('''
#if (!defined(LINUX))

#define PAM_EXTERN extern
#if defined(HAVE_SECURITY_PAM_APPL_H)
#include <security/pam_appl.h>
#elif defined(HAVE_PAM_PAM_APPL_H)
#include <pam/pam_appl.h>
#endif

#endif

#if defined(HAVE_SECURITY_PAM_MODULES_H)
#include <security/pam_modules.h>
#elif defined(HAVE_PAM_PAM_MODULES_H)
#include <pam/pam_modules.h>
#endif

#if defined(HAVE_SECURITY__PAM_MACROS_H)
#include <security/_pam_macros.h>
#elif defined(HAVE_PAM__PAM_MACROS_H)
#include <pam/_pam_macros.h>
#endif

#ifdef HAVE_SECURITY_PAM_EXT_H
#include <security/pam_ext.h>
#endif

int i; i = PAM_RADIO_TYPE;
''',
            'HAVE_PAM_RADIO_TYPE',
            lib='pam',
            msg="Checking whether PAM_RADIO_TYPE is available");
        conf.DEFINE('WITH_PAM', 1)
        conf.DEFINE('WITH_PAM_MODULES', 1)

    seteuid = False
    if not seteuid:
        seteuid = conf.CHECK_CODE('''
				#define AUTOCONF_TEST 1
				#define USE_SETREUID 1
				#include "./lib/util_sec.c"
				''',
				'USE_SETREUID',
				addmain=False,
				execute=True,
				msg="Checking whether setreuid is available")
    if not seteuid:
        seteuid = conf.CHECK_CODE('''
				#define AUTOCONF_TEST 1
				#define USE_SETRESUID 1
				#include "./lib/util_sec.c"
				''',
				'USE_SETRESUID',
				addmain=False,
				execute=True,
				msg="Checking whether setresuid is available")
    if not seteuid:
        seteuid = conf.CHECK_CODE('''
				#define AUTOCONF_TEST 1
				#define USE_SETEUID 1
				#include "./lib/util_sec.c"
				''',
				'USE_SETEUID',
				addmain=False,
				execute=True,
				msg="Checking whether seteuid is available")
    if not seteuid:
        seteuid = conf.CHECK_CODE('''
				#define AUTOCONF_TEST 1
				#define USE_SETUIDX 1
				#include "./lib/util_sec.c"
				''',
				'USE_SETUIDX',
				addmain=False,
				execute=True,
				mandatory=True,
				msg="Checking whether setuidx is available")
    if Options.options.with_dnsupdate:
        conf.CHECK_HEADERS('uuid/uuid.h')
        conf.CHECK_FUNCS_IN('uuid_generate', 'uuid')
        if not conf.CONFIG_SET('HAVE_UUID_UUID_H') and not conf.CONFIG_SET('HAVE_UUID_GENERATE'):
            print "--with-dnsupdate=yes but uuid support not sufficient"
            sys.exit(1)
        conf.DEFINE('WITH_DNS_UPDATES', 1)
    else:
        conf.SET_TARGET_TYPE('uuid', 'EMPTY')
    conf.CHECK_HEADERS('valgrind.h valgrind/valgrind.h valgrind/memcheck.h')
    if Options.options.developer:
        if conf.CONFIG_SET('HAVE_VALGRIND_H') or conf.CONFIG_SET('HAVE_VALGRIND_VALGRIND_H'):
            conf.DEFINE('VALGRIND', '1')

    conf.SAMBA_CONFIG_H('include/config.h')

def ctags(ctx):
    "build 'tags' file using ctags"
    import Utils
    source_root = os.path.dirname(Utils.g_module.root_path)
    cmd = 'ctags $(find %s/.. -name "*.[ch]" | grep -v "*_proto\.h")' % source_root
    print("Running: %s" % cmd)
    os.system(cmd)