]> git.proxmox.com Git - mirror_lxc.git/blob - configure.ac
snapshots: add man page and fix up help info a bit.
[mirror_lxc.git] / configure.ac
1 # -*- Autoconf -*-
2 # Process this file with autoconf to produce a configure script.
3
4 AC_INIT([lxc], [1.0.0.alpha1])
5
6 AC_CONFIG_SRCDIR([configure.ac])
7 AC_CONFIG_AUX_DIR([config])
8 AC_CONFIG_HEADERS([src/config.h])
9 AM_INIT_AUTOMAKE([-Wall -Werror -Wno-portability subdir-objects])
10 AC_CANONICAL_HOST
11 AM_PROG_CC_C_O
12 AC_GNU_SOURCE
13
14 # Detect the distribution. This is used for the default configuration and
15 # for some distro-specific build options.
16 AC_MSG_CHECKING([host distribution])
17 AC_ARG_WITH(distro, AS_HELP_STRING([--with-distro=DISTRO], [Specify the Linux distribution to target: One of redhat, oracle, fedora, suse, gentoo, debian, arch, slackware, paldo, mandriva or pardus.]))
18 if test "z$with_distro" = "z"; then
19 with_distro=`lsb_release -is`
20 fi
21 if test "z$with_distro" = "z"; then
22 AC_CHECK_FILE(/etc/redhat-release,with_distro="redhat")
23 AC_CHECK_FILE(/etc/oracle-release,with_distro="oracle")
24 AC_CHECK_FILE(/etc/fedora-release,with_distro="fedora")
25 AC_CHECK_FILE(/etc/SuSE-release,with_distro="suse")
26 AC_CHECK_FILE(/etc/gentoo-release,with_distro="gentoo")
27 AC_CHECK_FILE(/etc/debian_version,with_distro="debian")
28 AC_CHECK_FILE(/etc/arch-release,with_distro="arch")
29 AC_CHECK_FILE(/etc/slackware-version,with_distro="slackware")
30 AC_CHECK_FILE(/etc/frugalware-release,with_distro="frugalware")
31 AC_CHECK_FILE(/etc/mandrakelinux-release, with_distro="mandriva")
32 AC_CHECK_FILE(/etc/mandriva-release,with_distro="mandriva")
33 AC_CHECK_FILE(/etc/pardus-release,with_distro="pardus")
34 fi
35 with_distro=`echo ${with_distro} | tr '[[:upper:]]' '[[:lower:]]'`
36
37 if test "z$with_distro" = "z"; then
38 with_distro="unknown"
39 fi
40 case $with_distro in
41 ubuntu)
42 distroconf=default.conf.ubuntu
43 ;;
44 redhat|fedora|oracle|oracleserver)
45 distroconf=default.conf.libvirt
46 ;;
47 *)
48 echo -n "Linux distribution network config unknown, defaulting to lxc.network.type = empty"
49 distroconf=default.conf.unknown
50 ;;
51 esac
52 AC_MSG_RESULT([$with_distro])
53 AM_CONDITIONAL([HAVE_DEBIAN], [test x"$with_distro" = "xdebian" -o x"$with_distro" = "xubuntu"])
54
55 AC_CHECK_PROG([NEWUIDMAP], [newuidmap], [newuidmap])
56 AM_CONDITIONAL([HAVE_NEWUIDMAP], [test -n "$NEWUIDMAP"])
57
58 # Allow disabling rpath
59 AC_ARG_ENABLE([rpath],
60 [AC_HELP_STRING([--disable-rpath], [do not set rpath in executables])],
61 [], [enable_rpath=yes])
62 AM_CONDITIONAL([ENABLE_RPATH], [test "x$enable_rpath" = "xyes"])
63
64 # Documentation (manpages)
65 AC_ARG_ENABLE([doc],
66 [AC_HELP_STRING([--enable-doc], [make mans (requires docbook2man or docbook2x-man to be installed) [default=auto]])],
67 [], [enable_doc=auto])
68
69 if test "x$enable_doc" = "xyes" -o "x$enable_doc" = "xauto"; then
70 db2xman=""
71 dbparsers="docbook2x-man db2x_docbook2man docbook2man"
72
73 AC_MSG_CHECKING(for docbook2x-man)
74 for name in ${dbparsers}; do
75 if "$name" --help >/dev/null 2>&1; then
76 db2xman="$name"
77 break;
78 fi
79 done
80
81 if test -n "${db2xman}"; then
82 AC_MSG_RESULT([${db2xman}])
83 else
84 AC_MSG_RESULT([no])
85 if test "x$enable_doc" = "xyes"; then
86 AC_MSG_ERROR([docbook2x-man required by man request, but not found])
87 fi
88 fi
89
90 AC_SUBST(db2xman)
91 fi
92 AM_CONDITIONAL([ENABLE_DOCBOOK], [test "x$db2xman" != "x"])
93
94 if test "x$db2xman" = "xdocbook2man"; then
95 docdtd="\"-//Davenport//DTD DocBook V3.0//EN\""
96 else
97 docdtd="\"-//OASIS//DTD DocBook XML\" \"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd\""
98 fi
99 AC_SUBST(docdtd)
100
101 # Apparmor
102 AC_ARG_ENABLE([apparmor],
103 [AC_HELP_STRING([--enable-apparmor], [enable apparmor])],
104 [], [enable_apparmor=check])
105
106 if test "$enable_apparmor" = "check" ; then
107 AC_CHECK_LIB([apparmor],[aa_change_profile],[enable_apparmor=yes], [enable_apparmor=no])
108 fi
109 AM_CONDITIONAL([ENABLE_APPARMOR], [test "x$enable_apparmor" = "xyes"])
110
111 AC_CHECK_LIB([gnutls], [gnutls_hash_fast])
112
113 AM_COND_IF([ENABLE_APPARMOR],
114 [AC_CHECK_HEADER([sys/apparmor.h],[],[AC_MSG_ERROR([You must install the AppArmor development package in order to compile lxc])])
115 AC_CHECK_LIB([apparmor], [aa_change_profile],[],[AC_MSG_ERROR([You must install the AppArmor development package in order to compile lxc])])
116 AC_SUBST([APPARMOR_LIBS], [-lapparmor])])
117
118 # Seccomp syscall filter
119 AC_ARG_ENABLE([seccomp],
120 [AC_HELP_STRING([--enable-seccomp], [enable seccomp])],
121 [], [enable_seccomp=check])
122
123 if test "$enable_seccomp" = "check" ; then
124 AC_CHECK_LIB([seccomp],[seccomp_init],[enable_seccomp=yes],[enable_seccomp=no])
125 fi
126 AM_CONDITIONAL([ENABLE_SECCOMP], [test "x$enable_seccomp" = "xyes"])
127
128 AM_COND_IF([ENABLE_SECCOMP],
129 [AC_CHECK_HEADER([seccomp.h],[],[AC_MSG_ERROR([You must install the seccomp development package in order to compile lxc])])
130 AC_CHECK_LIB([seccomp], [seccomp_init],[],[AC_MSG_ERROR([You must install the seccomp development package in order to compile lxc])])
131 AC_SUBST([SECCOMP_LIBS], [-lseccomp])])
132
133 # HAVE_SCMP_FILTER_CTX=1 will tell us we have libseccomp api >= 1.0.0
134 AC_CHECK_TYPES([scmp_filter_ctx], [], [], [#include <seccomp.h>])
135
136 # Configuration examples
137 AC_ARG_ENABLE([examples],
138 [AC_HELP_STRING([--disable-examples], [do not install configuration examples])],
139 [], [enable_examples=yes])
140 AM_CONDITIONAL([ENABLE_EXAMPLES], [test "x$enable_examples" = "xyes"])
141
142 # Python3 module and scripts
143 AC_ARG_ENABLE([python],
144 [AC_HELP_STRING([--enable-python], [enable python binding])],
145 [enable_python=yes], [enable_python=no])
146 AM_CONDITIONAL([ENABLE_PYTHON], [test "x$enable_python" = "xyes"])
147
148 AM_COND_IF([ENABLE_PYTHON],
149 [AM_PATH_PYTHON([3.2], [], [AC_MSG_ERROR([You must install python3])])
150 PKG_CHECK_MODULES([PYTHONDEV], [python3 >= 3.2],[],[AC_MSG_ERROR([You must install python3-dev])])
151 AC_DEFINE_UNQUOTED([ENABLE_PYTHON], 1, [Python3 is available])])
152
153 # Not in older autoconf versions
154 # AS_VAR_COPY(DEST, SOURCE)
155 # -------------------------
156 # Set the polymorphic shell variable DEST to the contents of the polymorphic
157 # shell variable SOURCE.
158 m4_ifdef([AS_VAR_COPY], [],
159 [AC_DEFUN([AS_VAR_COPY],
160 [AS_LITERAL_IF([$1[]$2], [$1=$$2], [eval $1=\$$2])])
161 ])
162
163 dnl PKG_CHECK_VAR was introduced with pkg-config 0.28
164 m4_ifdef([PKG_CHECK_VAR], [],
165 [AC_DEFUN([PKG_CHECK_VAR],
166 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
167 AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl
168 _PKG_CONFIG([$1], [variable="][$3]["], [$2])
169 AS_VAR_COPY([$1], [pkg_cv_][$1])
170 AS_VAR_IF([$1], [""], [$5], [$4])dnl
171 ])# PKG_CHECK_VAR
172 ])
173
174 # Lua module and scripts
175 AC_ARG_ENABLE([lua],
176 [AC_HELP_STRING([--enable-lua], [enable lua binding])],
177 [], [enable_lua=check])
178
179 AC_ARG_WITH([lua-pc],
180 [AS_HELP_STRING(
181 [--with-lua-pc=PKG],
182 [Specify pkg-config package name for lua]
183 )], [], [with_lua_pc=no])
184
185 if test "x$enable_lua" = "xyes" -a "x$with_lua_pc" != "xno"; then
186 # exit with error if not found
187 PKG_CHECK_MODULES([LUA], [$with_lua_pc], [LUAPKGCONFIG=$with_lua_pc])
188 fi
189
190 if test "x$enable_lua" = "xcheck" -a "x$with_lua_pc" != "xno"; then
191 PKG_CHECK_MODULES([LUA], [$with_lua_pc],
192 [LUAPKGCONFIG=$with_lua_pc
193 enable_lua=yes],
194 [enable_lua=no])
195 fi
196
197 if test "x$enable_lua" != "xno"; then
198 PKG_CHECK_MODULES([LUA], [lua], [LUAPKGCONFIG=lua],
199 [PKG_CHECK_MODULES([LUA], [lua5.2], [LUAPKGCONFIG=lua5.2],
200 [PKG_CHECK_MODULES([LUA], [lua5.1], [LUAPKGCONFIG=lua5.1],
201 [AS_IF([test "x$enable_lua" = "xyes"],
202 [AC_MSG_ERROR([Lua not found. Please use --with-lua-pc=PKG])],
203 [enable_lua=no])]
204 )]
205 )])
206 AS_IF([test "x$LUAPKGCONFIG" != "x"], [enable_lua=yes])
207 fi
208
209 AM_CONDITIONAL([ENABLE_LUA],
210 [test "x$enable_lua" = "xyes"])
211
212 AM_COND_IF([ENABLE_LUA],
213 [AC_MSG_CHECKING([Lua version])
214 PKG_CHECK_VAR([LUA_VERSION], [$LUAPKGCONFIG], [V],,
215 [PKG_CHECK_VAR([LUA_VERSION], [$LUAPKGCONFIG], [major_version])])
216 AC_MSG_RESULT([$LUA_VERSION])
217 PKG_CHECK_VAR([LUA_INSTALL_CMOD], [$LUAPKGCONFIG], [INSTALL_CMOD],,
218 [LUA_INSTALL_CMOD=$libdir/lua/$LUA_VERSION])
219 PKG_CHECK_VAR([LUA_INSTALL_LMOD], [$LUAPKGCONFIG], [INSTALL_LMOD],,
220 [LUA_INSTALL_LMOD=$datadir/lua/$LUA_VERSION])
221 ])
222
223 # Optional test binaries
224 AC_ARG_ENABLE([tests],
225 [AC_HELP_STRING([--enable-tests], [build test/example binaries])],
226 [enable_tests=yes], [enable_tests=no])
227 AM_CONDITIONAL([ENABLE_TESTS], [test "x$enable_tests" = "xyes"])
228
229 # LXC container path, where the containers are actually stored
230 # This is overridden by an entry in the file called LXCCONF
231 # (i.e. /etc/lxc/lxc.conf)
232 AC_ARG_WITH([config-path],
233 [AC_HELP_STRING(
234 [--with-config-path=dir],
235 [lxc configuration repository path]
236 )], [], [with_config_path=['${localstatedir}/lib/lxc']])
237
238 # The path of the global lxc configuration file.
239 AC_ARG_WITH([global-conf],
240 [AC_HELP_STRING(
241 [--with-global-conf=dir],
242 [global lxc configuration file]
243 )], [], [with_global_conf=['${sysconfdir}/lxc/lxc.conf']])
244
245 AC_ARG_WITH([usernic-conf],
246 [AC_HELP_STRING(
247 [--with-usernic-conf],
248 [user network interface configuration file]
249 )], [], [with_usernic_conf=['${sysconfdir}/lxc/lxc-usernet']])
250
251 AC_ARG_WITH([usernic-db],
252 [AC_HELP_STRING(
253 [--with-usernic-db],
254 [lxc user nic database]
255 )], [], [with_usernic_db=['/run/lxc/nics']])
256
257 # Rootfs path, where the container mount structure is assembled
258 AC_ARG_WITH([rootfs-path],
259 [AC_HELP_STRING(
260 [--with-rootfs-path=dir],
261 [lxc rootfs mount point]
262 )], [], [with_rootfs_path=['${libdir}/lxc/rootfs']])
263 # cgroup pattern specification
264 AC_ARG_WITH([cgroup-pattern],
265 [AC_HELP_STRING(
266 [--with-cgroup-pattern=pattern],
267 [pattern for container cgroups]
268 )], [], [with_cgroup_pattern=['/lxc/%n']])
269
270 # Container log path. By default, use $lxcpath.
271 AC_MSG_CHECKING([Whether to place logfiles in container config path])
272 AC_ARG_ENABLE([configpath-log],
273 [AC_HELP_STRING([--enable-configpath-log], [use logfiles in config path])],
274 [use_configpath_logs=yes], [use_configpath_logs=no])
275 AC_MSG_RESULT([$use_configpath_logs])
276 AM_CONDITIONAL([USE_CONFIGPATH_LOGS], [test "$use_configpath_logs" = "yes"])
277
278 if test "$use_configpath_logs" = "yes"; then
279 default_log_path="${with_config_path}"
280 else
281 default_log_path="${localstatedir}/log/lxc"
282 fi
283
284 AC_ARG_WITH([log-path],
285 [AC_HELP_STRING(
286 [--with-log-path=dir],
287 [per container log path]
288 )], [], [with_log_path=['${default_log_path}']])
289
290 # Expand some useful variables
291 AS_AC_EXPAND(PREFIX, "$prefix")
292 AS_AC_EXPAND(LIBDIR, "$libdir")
293 AS_AC_EXPAND(BINDIR, "$bindir")
294 AS_AC_EXPAND(LIBEXECDIR, "$libexecdir")
295 AS_AC_EXPAND(INCLUDEDIR, "$includedir")
296 AS_AC_EXPAND(SYSCONFDIR, "$sysconfdir")
297 AS_AC_EXPAND(LXC_DEFAULT_CONFIG, "$sysconfdir/lxc/default.conf")
298 AS_AC_EXPAND(DATADIR, "$datadir")
299 AS_AC_EXPAND(LOCALSTATEDIR, "$localstatedir")
300 AS_AC_EXPAND(DOCDIR, "$docdir")
301 AS_AC_EXPAND(LXC_DISTRO_CONF, "$distroconf")
302 AS_AC_EXPAND(LXC_GENERATE_DATE, "$(date)")
303 AS_AC_EXPAND(LXCPATH, "$with_config_path")
304 AS_AC_EXPAND(LXC_GLOBAL_CONF, "$with_global_conf")
305 AS_AC_EXPAND(LXC_USERNIC_CONF, "$with_usernic_conf")
306 AS_AC_EXPAND(LXC_USERNIC_DB, "$with_usernic_db")
307 AS_AC_EXPAND(LXCROOTFSMOUNT, "$with_rootfs_path")
308 AS_AC_EXPAND(LXCTEMPLATEDIR, "$datadir/lxc/templates")
309 AS_AC_EXPAND(LXCHOOKDIR, "$datadir/lxc/hooks")
310 AS_AC_EXPAND(LXCINITDIR, "$libexecdir")
311 AS_AC_EXPAND(LOGPATH, "$with_log_path")
312 AC_SUBST(DEFAULT_CGROUP_PATTERN, ["$with_cgroup_pattern"])
313
314 # Check for some standard kernel headers
315 AC_CHECK_HEADERS([linux/unistd.h linux/netlink.h linux/genetlink.h],
316 [],
317 AC_MSG_ERROR([Please install the Linux kernel headers.]),
318 [#include <sys/socket.h>])
319
320 # Allow disabling libcap support
321 AC_ARG_ENABLE([capabilities],
322 [AC_HELP_STRING([--disable-capabilities], [disable kernel capabilities])],
323 [], [enable_capabilities=yes])
324
325 # Check for libcap support
326 if test "x$enable_capabilities" = "xyes"; then
327 AC_CHECK_LIB(cap,cap_set_proc,caplib=yes,caplib=no)
328 AC_MSG_CHECKING([linux capabilities])
329 if test "x$caplib" = "xyes" ; then
330 CAP_LIBS="-lcap"
331 AC_MSG_RESULT([$CAP_LIBS])
332 else
333 AC_MSG_RESULT([no])
334 AC_MSG_ERROR([You are missing libcap support. If you really want to build without kernel capabilities, use --disable-capabilities])
335 fi
336 else
337 CAP_LIBS=""
338 fi
339 AC_SUBST([CAP_LIBS])
340
341 # Check for alternate C libraries
342 AC_MSG_CHECKING(for bionic libc)
343 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
344 [[#ifndef __ANDROID__
345 error: Not bionic!
346 #endif]])],
347 [is_bionic=yes],
348 [is_bionic=no])
349 if test "x$is_bionic" = "xyes"; then
350 AC_DEFINE([IS_BIONIC], 1, [bionic libc])
351 AC_MSG_RESULT([yes])
352 else
353 AC_MSG_RESULT([no])
354 fi
355 AM_CONDITIONAL([IS_BIONIC], [test "x$is_bionic" = "xyes"])
356
357 # Some systems lack PR_CAPBSET_DROP definition => HAVE_DECL_PR_CAPBSET_DROP
358 AC_CHECK_DECLS([PR_CAPBSET_DROP], [], [], [#include <sys/prctl.h>])
359
360 # Check for some headers
361 AC_CHECK_HEADERS([sys/signalfd.h pty.h ifaddrs.h sys/capability.h sys/personality.h utmpx.h sys/timerfd.h])
362
363 # Check for some syscalls functions
364 AC_CHECK_FUNCS([setns pivot_root sethostname unshare rand_r confstr])
365
366 # Check for some functions
367 AC_CHECK_LIB(util, openpty)
368 AC_CHECK_FUNCS([openpty hasmntopt setmntent endmntent])
369 AC_CHECK_FUNCS([getline],
370 AM_CONDITIONAL(HAVE_GETLINE, true)
371 AC_DEFINE(HAVE_GETLINE,1,[Have getline]),
372 AM_CONDITIONAL(HAVE_GETLINE, false))
373 AC_CHECK_FUNCS([fgetln],
374 AM_CONDITIONAL(HAVE_FGETLN, true)
375 AC_DEFINE(HAVE_FGETLN,1,[Have fgetln]),
376 AM_CONDITIONAL(HAVE_FGETLN, false))
377
378 # Check for some libraries
379 AC_SEARCH_LIBS(sem_open, [rt pthread])
380 AC_SEARCH_LIBS(clock_gettime, [rt])
381
382 # Check for some standard binaries
383 AC_PROG_GCC_TRADITIONAL
384 AC_PROG_SED
385
386 if test "x$GCC" = "xyes"; then
387 CFLAGS="$CFLAGS -Wall -Werror"
388 fi
389
390 # Files requiring some variable expansion
391 AC_CONFIG_FILES([
392 Makefile
393 lxc.pc
394 lxc.spec
395 config/Makefile
396
397 doc/Makefile
398 doc/legacy/lxc-ls.sgml
399 doc/lxc-attach.sgml
400 doc/lxc-cgroup.sgml
401 doc/lxc-checkconfig.sgml
402 doc/lxc-checkpoint.sgml
403 doc/lxc-clone.sgml
404 doc/lxc-console.sgml
405 doc/lxc-create.sgml
406 doc/lxc-destroy.sgml
407 doc/lxc-device.sgml
408 doc/lxc-execute.sgml
409 doc/lxc-freeze.sgml
410 doc/lxc-info.sgml
411 doc/lxc-kill.sgml
412 doc/lxc-ls.sgml
413 doc/lxc-monitor.sgml
414 doc/lxc-netstat.sgml
415 doc/lxc-ps.sgml
416 doc/lxc-restart.sgml
417 doc/lxc-snapshot.sgml
418 doc/lxc-start-ephemeral.sgml
419 doc/lxc-start.sgml
420 doc/lxc-stop.sgml
421 doc/lxc-top.sgml
422 doc/lxc-unfreeze.sgml
423 doc/lxc-unshare.sgml
424 doc/lxc-version.sgml
425 doc/lxc-wait.sgml
426
427 doc/lxc.conf.sgml
428 doc/lxc.sgml
429 doc/common_options.sgml
430 doc/see_also.sgml
431
432 doc/rootfs/Makefile
433
434 doc/examples/Makefile
435 doc/examples/lxc-macvlan.conf
436 doc/examples/lxc-vlan.conf
437 doc/examples/lxc-no-netns.conf
438 doc/examples/lxc-empty-netns.conf
439 doc/examples/lxc-phys.conf
440 doc/examples/lxc-veth.conf
441 doc/examples/lxc-complex.conf
442
443 doc/ja/Makefile
444 doc/ja/legacy/lxc-ls.sgml
445 doc/ja/lxc-attach.sgml
446 doc/ja/lxc-cgroup.sgml
447 doc/ja/lxc-checkconfig.sgml
448 doc/ja/lxc-checkpoint.sgml
449 doc/ja/lxc-clone.sgml
450 doc/ja/lxc-console.sgml
451 doc/ja/lxc-create.sgml
452 doc/ja/lxc-destroy.sgml
453 doc/ja/lxc-device.sgml
454 doc/ja/lxc-execute.sgml
455 doc/ja/lxc-freeze.sgml
456 doc/ja/lxc-info.sgml
457 doc/ja/lxc-kill.sgml
458 doc/ja/lxc-ls.sgml
459 doc/ja/lxc-monitor.sgml
460 doc/ja/lxc-netstat.sgml
461 doc/ja/lxc-ps.sgml
462 doc/ja/lxc-restart.sgml
463 doc/ja/lxc-start-ephemeral.sgml
464 doc/ja/lxc-start.sgml
465 doc/ja/lxc-stop.sgml
466 doc/ja/lxc-top.sgml
467 doc/ja/lxc-unfreeze.sgml
468 doc/ja/lxc-unshare.sgml
469 doc/ja/lxc-version.sgml
470 doc/ja/lxc-wait.sgml
471
472 doc/ja/lxc.conf.sgml
473 doc/ja/lxc.sgml
474 doc/ja/common_options.sgml
475 doc/ja/see_also.sgml
476
477 hooks/Makefile
478
479 templates/Makefile
480 templates/lxc-cirros
481 templates/lxc-debian
482 templates/lxc-ubuntu
483 templates/lxc-ubuntu-cloud
484 templates/lxc-opensuse
485 templates/lxc-busybox
486 templates/lxc-fedora
487 templates/lxc-oracle
488 templates/lxc-altlinux
489 templates/lxc-sshd
490 templates/lxc-archlinux
491 templates/lxc-alpine
492
493 src/Makefile
494 src/lxc/Makefile
495 src/lxc/lxc-ps
496 src/lxc/lxc-netstat
497 src/lxc/lxc-checkconfig
498 src/lxc/lxc-version
499 src/lxc/lxc-start-ephemeral
500 src/lxc/legacy/lxc-ls
501 src/lxc/lxc.functions
502
503 src/python-lxc/Makefile
504
505 src/lua-lxc/Makefile
506
507 src/tests/Makefile
508 ])
509 AC_CONFIG_COMMANDS([default],[[]],[[]])
510 AC_OUTPUT