gstreamer/configure.ac
Thomas Vander Stichele 101c15c9b8 more define fixes
Original commit message from CVS:
more define fixes
2005-10-16 09:44:04 +00:00

580 lines
18 KiB
Text

AC_PREREQ(2.52)
dnl initialize autoconf
dnl we don't specify PACKAGE and VERSION because AS_VERSION puts it together
AC_INIT
dnl when going to/from release please set the nano (fourth number) right !
dnl releases only do Wall, cvs and prerelease does Werror too
AS_VERSION(gstreamer, GST_VERSION, 0, 9, 3, 1,
GST_CVS="no", GST_CVS="yes")
dnl can autoconf find the source ?
AC_CONFIG_SRCDIR([gst/gst.c])
dnl define the output header for config
AM_CONFIG_HEADER([config.h])
dnl AM_MAINTAINER_MODE only provides the option to configure to enable it
AM_MAINTAINER_MODE
dnl initialize automake
dnl FIXME: this is deprecated use, we should move PACKAGE and VERSION to
dnl AC_INIT, but then we need to parse the version to pass to AS_VERSION
AM_INIT_AUTOMAKE($PACKAGE, $VERSION)
dnl our libraries and install dirs use major.minor as a version
GST_MAJORMINOR=$GST_VERSION_MAJOR.$GST_VERSION_MINOR
dnl we override it here for release candidates for a new series
# GST_MAJORMINOR=0.9
AC_SUBST(GST_MAJORMINOR)
dnl CURRENT, REVISION, AGE
dnl - library source changed -> increment REVISION
dnl - interfaces added/removed/changed -> increment CURRENT, REVISION = 0
dnl - interfaces added -> increment AGE
dnl - interfaces removed -> AGE = 0
AS_LIBTOOL(GST, 7, 0, 0)
AS_LIBTOOL_TAGS
AM_PROG_LIBTOOL
dnl *** autotools stuff ****
dnl allow for different autotools
AS_AUTOTOOLS_ALTERNATE
dnl Add parameters for aclocal
AC_SUBST(ACLOCAL_AMFLAGS, "-I common/m4")
dnl *** check for arguments to configure ***
dnl subsystems - can influence other decisions so needs to be high up
dnl we need to AM_CONDITIONAL them here for automake 1.6.x compatibility
GST_CHECK_SUBSYSTEM_DISABLE(GST_DEBUG,[debugging subsystem])
AM_CONDITIONAL(GST_DISABLE_GST_DEBUG, test "x$GST_GST_DISABLE_DEBUG" = "xyes")
GST_CHECK_SUBSYSTEM_DISABLE(LOADSAVE,[pipeline XML load/save])
AM_CONDITIONAL(GST_DISABLE_LOADSAVE, test "x$GST_DISABLE_LOADSAVE" = "xyes")
GST_CHECK_SUBSYSTEM_DISABLE(PARSE,[command-line parser])
AM_CONDITIONAL(GST_DISABLE_PARSE, test "x$GST_DISABLE_PARSE" = "xyes")
GST_CHECK_SUBSYSTEM_DISABLE(TRACE,[tracing subsystem])
AM_CONDITIONAL(GST_DISABLE_TRACE, test "x$GST_DISABLE_TRACE" = "xyes")
GST_CHECK_SUBSYSTEM_DISABLE(ALLOC_TRACE,[allocation tracing])
AM_CONDITIONAL(GST_DISABLE_ALLOC_TRACE, test "x$GST_DISABLE_ALLOC_TRACE" = "xyes")
GST_CHECK_SUBSYSTEM_DISABLE(REGISTRY,[plugin registry])
AM_CONDITIONAL(GST_DISABLE_REGISTRY, test "x$GST_DISABLE_REGISTRY" = "xyes")
GST_CHECK_SUBSYSTEM_DISABLE(ENUMTYPES,[enum types])
AM_CONDITIONAL(GST_DISABLE_ENUMTYPES, test "x$GST_DISABLE_ENUMTYPES" = "xyes")
GST_CHECK_SUBSYSTEM_DISABLE(INDEX,[index])
AM_CONDITIONAL(GST_DISABLE_INDEX, test "x$GST_DISABLE_INDEX" = "xyes")
GST_CHECK_SUBSYSTEM_DISABLE(PLUGIN,[plugin])
AM_CONDITIONAL(GST_DISABLE_PLUGIN, test "x$GST_DISABLE_PLUGIN" = "xyes")
GST_CHECK_SUBSYSTEM_DISABLE(URI,[uri handlers])
AM_CONDITIONAL(GST_DISABLE_URI, test "x$GST_DISABLE_URI" = "xyes")
GST_ARG_DEBUG
GST_ARG_PROFILING
GST_ARG_VALGRIND
GST_ARG_GCOV
GST_ARG_WITH_PKG_CONFIG_PATH
GST_ARG_WITH_PACKAGE_NAME([GStreamer])
GST_ARG_WITH_PACKAGE_ORIGIN
dnl use a cache dir for storing element registry info.
GST_CACHE_DIR=${localstatedir}/cache/gstreamer-$GST_MAJORMINOR
AC_ARG_WITH(cachedir,
AC_HELP_STRING([--with-cachedir],
[specify path to use for plugin and command completion registries]),
[
case "${withval}" in
yes) AC_MSG_ERROR(bad value ${withval} for --with-cachedir) ;;
no) AC_MSG_ERROR(bad value ${withval} for --with-cachedir) ;;
*) GST_CACHE_DIR="${withval}" ;;
esac
],
[:]) dnl Default value
AS_AC_EXPAND(GST_CACHE_DIR, $GST_CACHE_DIR)
AC_DEFINE_UNQUOTED(GST_CACHE_DIR, "$GST_CACHE_DIR", [Location of registry])
AC_MSG_NOTICE(Using $GST_CACHE_DIR as registry cache dir)
dnl building of tests
AC_ARG_ENABLE(tests,
AC_HELP_STRING([--disable-tests], [disable building test apps]),
[
case "${enableval}" in
yes) BUILD_TESTS=yes ;;
no) BUILD_TESTS=no ;;
*) AC_MSG_ERROR(bad value ${enableval} for --disable-tests) ;;
esac
],
[BUILD_TESTS=yes]) dnl Default value
AM_CONDITIONAL(BUILD_TESTS, test "x$BUILD_TESTS" = "xyes")
dnl tests known to fail
AC_ARG_ENABLE(failing-tests,
AC_HELP_STRING([--disable-failing-tests],
[disable building tests known to fail]),
[
case "${enableval}" in
yes) BUILD_FAILING_TESTS=yes ;;
no) BUILD_FAILING_TESTS=no ;;
*) AC_MSG_ERROR(bad value ${enableval} for --disable-failing-tests) ;;
esac
],
[BUILD_FAILING_TESTS=no]) dnl Default value
AM_CONDITIONAL(BUILD_FAILING_TESTS, test "x$BUILD_FAILING_TESTS" = "xyes")
if test x$BUILD_FAILING_TESTS = xyes; then
AC_MSG_WARN([building tests known to fail, use --disable-failing-tests to disable])
else
AC_MSG_WARN([Sissy ! By asking to not build the tests known to fail, you hereby waive your right to customer support. If you do not agree with this EULA, please press Ctrl-C before the next line is printed. By allowing the next line to be printed, you expressly acknowledge your acceptance of this EULA.])
fi
AC_ARG_ENABLE(examples,
AC_HELP_STRING([--disable-examples], [disable building examples]),
[
case "${enableval}" in
yes) BUILD_EXAMPLES=yes ;;
no) BUILD_EXAMPLES=no ;;
*) AC_MSG_ERROR(bad value ${enableval} for --disable-examples) ;;
esac
],
[BUILD_EXAMPLES=yes]) dnl Default value
AM_CONDITIONAL(BUILD_EXAMPLES, test "x$BUILD_EXAMPLES" = "xyes")
dnl poison destroyed objects
AC_ARG_ENABLE(poisoning,
AC_HELP_STRING([--enable-poisoning],
[enable poisoning of deallocated objects]),
[
case "${enableval}" in
yes) USE_POISONING=yes ;;
no) USE_POISONING=no ;;
*) AC_MSG_ERROR(bad value ${enableval} for --enable-poisoning) ;;
esac
],
[USE_POISONING=no]) dnl Default value
if test "x$USE_POISONING" = xyes; then
AC_DEFINE(USE_POISONING, 1,
[Define if we should poison deallocated memory])
fi
dnl *** platform checks ***
dnl * hardware/architecture *
dnl common/m4/gst-arch.m4
dnl check CPU type
GST_ARCH
dnl common/m4/gst-arch.m4
dnl check for unaligned access
GST_UNALIGNED_ACCESS
dnl create a configure variable for gst/gstconfig.h
if test x${as_cv_unaligned_access} = xyes ; then
GST_HAVE_UNALIGNED_ACCESS_DEFINE="#define GST_HAVE_UNALIGNED_ACCESS 1"
else
GST_HAVE_UNALIGNED_ACCESS_DEFINE="#define GST_HAVE_UNALIGNED_ACCESS 0"
fi
AC_SUBST(GST_HAVE_UNALIGNED_ACCESS_DEFINE)
dnl * software *
dnl check for large file support
dnl affected plugins must include config.h
AC_SYS_LARGEFILE
dnl HAVE_WIN32 currently means "disable POSIXisms".
case "$host" in
*-*-mingw*)
AC_DEFINE_UNQUOTED(HAVE_WIN32, 1, [Defined if compiling for Windows])
;;
*)
;;
esac
dnl *** checks for programs ***
dnl find a compiler
AC_PROG_CC
dnl find an assembler
AM_PROG_AS
dnl we use awk in the bison version check
AC_PROG_AWK
dnl we require bison for building the parser
dnl FIXME: check if AC_PROG_YACC is suitable here
dnl FIXME: make precious
AC_PATH_PROG(BISON_PATH, bison, no)
if test x$BISON_PATH = xno; then
AC_MSG_ERROR(Could not find bison)
fi
dnl check bison version
AC_MSG_CHECKING([bison version])
if $BISON_PATH --version | head -n 1 | $AWK '{ if ($4 < 1.35) exit 1; else exit 0;}';
then
AC_MSG_RESULT([ok])
else
AC_MSG_RESULT([too old.])
AC_MSG_ERROR([Your bison version is too old, v1.35 or later is required.])
fi
dnl we require flex for building the parser
dnl FIXME: check if AC_PROG_LEX is suitable here
AC_PATH_PROG(FLEX_PATH, flex, no)
if test x$FLEX_PATH = xno; then
AC_MSG_ERROR(Could not find flex)
fi
dnl Perl is used in building documentation
AC_PATH_PROG(PERL_PATH, perl, no)
if test x$PERL_PATH = xno; then
AC_MSG_ERROR(Could not find perl)
fi
AC_PATH_PROG(VALGRIND_PATH, valgrind, no)
AM_CONDITIONAL(HAVE_VALGRIND, test ! "x$VALGRIND_PATH" = "xno")
dnl check for documentation tools
GST_DOCBOOK_CHECK
GTK_DOC_CHECK([1.3])
dnl *** checks for libraries ***
dnl For interactive UNIX (a Sun thing)
dnl FIXME: this adds -lcposix to LIBS, but I doubt we use LIBS
AC_ISC_POSIX
dnl *** checks for header files ***
dnl check if we have ANSI C header files
AC_HEADER_STDC
dnl Check for ucontext.h
AC_CHECK_HEADERS([ucontext.h])
AC_CHECK_HEADERS([sys/socket.h], HAVE_SYS_SOCKET_H=yes)
AM_CONDITIONAL(HAVE_SYS_SOCKET_H, test "x$HAVE_SYS_SOCKET_H" = "xyes")
dnl *** checks for library functions ***
AC_CHECK_FUNCS([sigaction])
dnl check for fseeko()
AC_FUNC_FSEEKO
dnl check for ftello()
AC_CHECK_FUNCS([ftello])
AC_CHECK_FUNCS([fgetpos])
AC_CHECK_FUNCS([fsetpos])
dnl check for mmap()
AC_FUNC_MMAP
AM_CONDITIONAL(HAVE_MMAP, test "x$ac_cv_func_mmap_fixed_mapped" = "xyes")
dnl common/m4/gst-mcsc.m4
dnl check for makecontext and define HAVE_MAKECONTEXT if we have it
AC_CHECK_MCSC
if test "$ac_cv_check_mcsc" = "yes"; then
AC_DEFINE_UNQUOTED(HAVE_MAKECONTEXT, 1,
[defined if we have makecontext ()])
fi
dnl Check for a way to display the function name in debug output
GST_CHECK_FUNCTION
dnl test for register_printf_function
AC_CHECK_FUNC(register_printf_function,
[
GST_PRINTF_EXTENSION_FORMAT_DEFINE="#define GST_PTR_FORMAT \"P\""
AC_DEFINE(HAVE_PRINTF_EXTENSION, 1,
[Defined if we have register_printf_function ()])
],
GST_PRINTF_EXTENSION_FORMAT_DEFINE="#define GST_PTR_FORMAT \"p\""
)
AC_SUBST(GST_PRINTF_EXTENSION_FORMAT_DEFINE)
dnl test if we have dladdr(); we use it for debugging; see gst/gstinfo.c
save_cflags="$CFLAGS"
CFLAGS="$CFLAGS -D_GNU_SOURCE"
AC_CHECK_LIB(dl, dladdr,
AC_DEFINE(HAVE_DLADDR, 1,
[Defined if we have dladdr ()]))
CFLAGS="$save_cflags"
dnl *** checks for compiler characteristics ***
dnl make sure we can use "inline" from C code
AC_C_INLINE
dnl *** TODO: decide where to put ***
dnl set up gettext
GST_GETTEXT([gstreamer-$GST_MAJORMINOR])
dnl define an ERROR_CFLAGS Makefile variable
GST_SET_ERROR_CFLAGS($GST_CVS)
dnl define correct errorlevel for debugging messages. We want to have GST_ERROR
dnl messages printed when running cvs builds
if test "x$GST_CVS" = "xyes"; then
GST_LEVEL_DEFAULT=GST_LEVEL_ERROR
else
GST_LEVEL_DEFAULT=GST_LEVEL_NONE
fi
AC_DEFINE_UNQUOTED(GST_LEVEL_DEFAULT, $GST_LEVEL_DEFAULT,
[Default errorlevel to use])
AC_SUBST(GST_LEVEL_DEFAULT)
dnl *** checks for dependency libraries ***
dnl GLib
dnl Minimum required version of GLib
GLIB_REQ="2.6"
AC_SUBST(GLIB_REQ)
dnl Check for glib2 with sugar on top
PKG_CHECK_MODULES(GLIB,
glib-2.0 >= $GLIB_REQ gobject-2.0 gthread-2.0 gmodule-2.0,
HAVE_GLIB=yes,
HAVE_GLIB=no)
if test "x$HAVE_GLIB" = "xno"; then
AC_MSG_ERROR([GStreamer requires GLib >= $GLIB_REQ to compile.])
fi
dnl for the poor souls who for example have glib in /usr/local
AS_SCRUB_INCLUDE(GLIB_CFLAGS)
dnl GLib 2.8 has some bug fixes that we like, so make sure our code knows
AC_MSG_CHECKING([glib version >= 2.8])
if pkg-config --atleast-version=2.8 glib-2.0; then
AC_MSG_RESULT(yes)
GST_HAVE_GLIB_2_8_DEFINE="#define GST_HAVE_GLIB_2_8 1"
else
AC_MSG_RESULT(no)
GST_HAVE_GLIB_2_8_DEFINE="/* #undef GST_HAVE_GLIB_2_8 */"
fi
AC_SUBST(GST_HAVE_GLIB_2_8_DEFINE)
dnl Check for glib2 without extra fat, useful for the unversioned tool frontends
PKG_CHECK_MODULES(GLIB_ONLY, glib-2.0 >= $GLIB_REQ)
dnl libxml 2, which is/should be optional (FIXME)
if test "x$GST_DISABLE_LOADSAVE" = "xyes" && \
test "x$GST_DISABLE_REGISTRY" = "xyes"
then
AC_MSG_NOTICE([Registry and load/save are disabled, not checking for libxml2])
else
dnl check for libxml2 with minimum req version
GST_LIBXML2_CHECK(2.4.9)
fi
dnl check for "check", unit testing library/header
AM_PATH_CHECK(0.9.2,
[
HAVE_CHECK=yes
AC_MSG_NOTICE(CHECK_CFLAGS: $CHECK_CFLAGS)
AC_MSG_NOTICE(CHECK_LIBS: $CHECK_LIBS)
],
HAVE_CHECK=no)
AM_CONDITIONAL(HAVE_CHECK, test "x$HAVE_CHECK" = "xyes")
OPT_CFLAGS=
dnl Check for some compiler flags that optimize our code.
if test "x$GCC" = xyes; then
AS_COMPILER_FLAG(-fno-common, OPT_CFLAGS="$OPT_CFLAGS -fno-common")
fi
dnl FIXME: decide what kind of flag this is, maybe it's not an optimization
dnl flag
dnl check if we should use -Wa,-mregnames on PowerPC, so we can use
dnl symbolic register names in inline asm
if test x$HAVE_CPU_PPC = xyes ; then
AS_COMPILER_FLAG(["-Wa,-mregnames"],
[OPT_CFLAGS="$OPT_CFLAGS -Wa,-mregnames"])
fi
dnl *** FIXME: name this part
dnl set license and copyright notice
GST_LICENSE="LGPL"
AC_DEFINE_UNQUOTED(GST_LICENSE, "$GST_LICENSE", [GStreamer license])
AC_SUBST(GST_LICENSE)
dnl define LIBDIR so we can inform people where we live
AS_AC_EXPAND(LIBDIR, $libdir)
AC_DEFINE_UNQUOTED(LIBDIR, "$LIBDIR", [library dir])
dnl set location of plugin directory
AS_AC_EXPAND(PLUGINS_DIR, ${libdir}/gstreamer-$GST_MAJORMINOR)
AC_DEFINE_UNQUOTED(PLUGINS_DIR, "$PLUGINS_DIR", [Define the plugin directory])
AC_SUBST(PLUGINS_DIR)
AC_MSG_NOTICE([Using $PLUGINS_DIR as the plugin install location])
dnl plugin directory configure-time variable for use in Makefile.am
plugindir="\$(libdir)/gstreamer-$GST_MAJORMINOR"
AC_SUBST(plugindir)
dnl FIXME: add LIBXML_PKG here
GST_PKG_DEPS="glib-2.0, gobject-2.0, gmodule-2.0, gthread-2.0"
AC_SUBST(GST_PKG_DEPS)
dnl *** finalize CFLAGS, LDFLAGS, LIBS
dnl Overview:
dnl GST_OPTION_CFLAGS: common flags for profiling, debugging, errors, ...
dnl GST_ALL_*: flags shared by all built objects
dnl GST_OBJ_*: additional flags to link to the core library
dnl include GST_ALL_*
dnl GST_LT_LDFLAGS: library versioning of our libraries
dnl GST_PLUGIN_LDFLAGS: flags to be used for all plugins
dnl GST_OPTION_CFLAGS
if test "x$USE_DEBUG" = xyes; then
PROFILE_CFLAGS="-g"
fi
AC_SUBST(PROFILE_CFLAGS)
DEPRECATED_CFLAGS="-DGST_DISABLE_DEPRECATED"
AC_SUBST(DEPRECATED_CFLAGS)
dnl every flag in GST_OPTION_CFLAGS can be overridden at make time
GST_OPTION_CFLAGS="\$(ERROR_CFLAGS) \$(DEBUG_CFLAGS) \$(PROFILE_CFLAGS) \$(GCOV_CFLAGS) \$(OPT_CFLAGS) \$(DEPRECATED_CFLAGS)"
AC_SUBST(GST_OPTION_CFLAGS)
dnl GST_ALL_*
dnl vars common to for all internal objects (core libs, elements, applications)
dnl CFLAGS:
dnl - XML needs to be added because xmlPtr is used in core
dnl - src and build dirs need to be added because every piece that gets built
dnl will need the GStreamer source and generated headers
dnl LIBS: XML doesn't need to be added because we don't explicitly use symbols
dnl from LibXML
GST_ALL_CFLAGS="-I\$(top_srcdir)/libs -I\$(top_srcdir) -I\$(top_builddir) $GLIB_CFLAGS $XML_CFLAGS \$(GST_OPTION_CFLAGS)"
dnl FIXME: check if LTLIBINTL is needed everywhere
dnl I presume it is given that it contains the symbols that _() stuff maps to
GST_ALL_LIBS="$GLIB_LIBS $LTLIBINTL"
dnl LDFLAGS modifier defining exported symbols from built shared objects
EXPORT_LDFLAGS="-export-symbols-regex [_]*\(gst_\|Gst\|GST_\).*"
GST_ALL_LDFLAGS="$EXPORT_LDFLAGS -no-undefined"
AC_SUBST(GST_ALL_CFLAGS)
AC_SUBST(GST_ALL_LIBS)
AC_SUBST(GST_ALL_LDFLAGS)
dnl GST_OBJ_*
dnl default vars for all internal objects built on libgstreamer
GST_OBJ_CFLAGS="\$(GST_ALL_CFLAGS)"
GST_OBJ_LIBS="\$(top_builddir)/gst/libgstreamer-$GST_MAJORMINOR.la \$(GST_ALL_LIBS)"
GST_OBJ_LDFLAGS="$GST_LT_LDFLAGS $GST_ALL_LDFLAGS"
AC_SUBST(GST_OBJ_CFLAGS)
AC_SUBST(GST_OBJ_LIBS)
AC_SUBST(GST_OBJ_LDFLAGS)
dnl GST_PLUGIN_LDFLAGS
dnl LDFLAGS for plugins; include GST_ALL_LDFLAGS
GST_PLUGIN_LDFLAGS="-module -avoid-version $GST_ALL_LDFLAGS"
AC_SUBST(GST_PLUGIN_LDFLAGS, "$GST_PLUGIN_LDFLAGS")
dnl ##################################################
dnl # deps for examples from manual #
dnl ##################################################
PKG_CHECK_MODULES(LIBGNOMEUI, libgnomeui-2.0,
HAVE_LIBGNOMEUI="yes", HAVE_LIBGNOMEUI="no")
AM_CONDITIONAL(HAVE_LIBGNOMEUI, test "x$HAVE_LIBGNOMEUI" = "xyes")
dnl ##################################################
dnl # Prepare informative messages to display at end #
dnl ##################################################
infomessages=
dnl *** output files ***
dnl libs/ext/Makefile
dnl nothing there yet !
AC_CONFIG_FILES(
Makefile
gst/Makefile
gst/gstconfig.h
gst/gstversion.h
gst/base/Makefile
gst/check/Makefile
gst/indexers/Makefile
gst/elements/Makefile
gst/parse/Makefile
libs/Makefile
libs/gst/Makefile
libs/gst/controller/Makefile
libs/gst/dataprotocol/Makefile
po/Makefile.in
check/Makefile
tests/Makefile
tests/instantiate/Makefile
tests/muxing/Makefile
tests/seeking/Makefile
tests/sched/Makefile
tests/threadstate/Makefile
testsuite/Makefile
testsuite/caps/Makefile
testsuite/debug/Makefile
testsuite/dlopen/Makefile
testsuite/elements/Makefile
testsuite/indexers/Makefile
testsuite/parse/Makefile
testsuite/plugin/Makefile
testsuite/refcounting/Makefile
testsuite/states/Makefile
testsuite/threads/Makefile
testsuite/trigger/Makefile
examples/Makefile
examples/controller/Makefile
examples/cutter/Makefile
examples/helloworld/Makefile
examples/launch/Makefile
examples/manual/Makefile
examples/mixer/Makefile
examples/metadata/Makefile
examples/pingpong/Makefile
examples/plugins/Makefile
examples/pwg/Makefile
examples/queue/Makefile
examples/retag/Makefile
examples/thread/Makefile
examples/typefind/Makefile
examples/xml/Makefile
tools/Makefile
common/Makefile
common/m4/Makefile
docs/Makefile
docs/faq/Makefile
docs/gst/Makefile
docs/libs/Makefile
docs/manual/Makefile
docs/pwg/Makefile
docs/xsl/Makefile
docs/version.entities
win32/common/config.h
pkgconfig/Makefile
stamp.h
pkgconfig/gstreamer.pc
pkgconfig/gstreamer-uninstalled.pc
pkgconfig/gstreamer-base.pc
pkgconfig/gstreamer-base-uninstalled.pc
pkgconfig/gstreamer-check.pc
pkgconfig/gstreamer-check-uninstalled.pc
pkgconfig/gstreamer-controller.pc
pkgconfig/gstreamer-controller-uninstalled.pc
pkgconfig/gstreamer-dataprotocol.pc
pkgconfig/gstreamer-dataprotocol-uninstalled.pc
gstreamer.spec
)
AC_CONFIG_COMMANDS(echo "$infomessages", infomessages="$infomessages")
AC_OUTPUT