configure: regroup program checks

[lttng-ust.git] / configure.ac

dnl SPDX-License-Identifier: LGPL-2.1-only
dnl
dnl Copyright (C) 2021 EfficiOS, Inc.
dnl
dnl Process this file with autoconf to produce a configure script.


# Project version information
m4_define([ust_version_major], [2])
m4_define([ust_version_minor], [13])
m4_define([ust_version_patch], [0])
m4_define([ust_version_dev_stage], [-pre])
m4_define([ust_version], ust_version_major[.]ust_version_minor[.]ust_version_patch[]ust_version_dev_stage)
m4_define([ust_version_name], [[Codename TBD]])
m4_define([ust_version_description], [[Description TBD]])

# Library version information of "liblttng-ust"
# Following the numbering scheme proposed by libtool for the library version
# http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
m4_define([ust_lib_version_current], [1])
m4_define([ust_lib_version_revision], [0])
m4_define([ust_lib_version_age], [0])
m4_define([ust_lib_version], ust_lib_version_current[:]ust_lib_version_revision[:]ust_lib_version_age)

# Library version information of "liblttng-ust-ctl"
# Following the numbering scheme proposed by libtool for the library version
# http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
m4_define([ust_ctl_lib_version_current], [5])
m4_define([ust_ctl_lib_version_revision], [0])
m4_define([ust_ctl_lib_version_age], [0])
m4_define([ust_ctl_lib_version], ust_ctl_lib_version_current[:]ust_ctl_lib_version_revision[:]ust_ctl_lib_version_age)


##                     ##
## Autoconf base setup ##
##                     ##

AC_PREREQ([2.69])
AC_INIT([lttng-ust],[ust_version],[mathieu dot desnoyers at efficios dot com],[],[https://lttng.org])

AC_CONFIG_HEADERS([include/config.h include/lttng/ust-config.h include/lttng/ust-version.h])
AC_CONFIG_AUX_DIR([config])
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_SRCDIR([include/lttng/tracepoint.h])

AC_CANONICAL_TARGET
AC_CANONICAL_HOST


##                     ##
## Automake base setup ##
##                     ##

AM_INIT_AUTOMAKE([1.12 foreign dist-bzip2 no-dist-gzip tar-ustar nostdinc -Wall -Wno-portability -Werror])
AM_MAINTAINER_MODE([enable])

# Enable silent rules by default
AM_SILENT_RULES([yes])


##                   ##
## C compiler checks ##
##                   ##

# Choose the C compiler
AC_PROG_CC
# AC_PROG_CC_STDC was merged in AC_PROG_CC in autoconf 2.70
m4_version_prereq([2.70], [], [AC_PROG_CC_STDC])

# Make sure the C compiler supports C99
AS_IF([test "$ac_cv_prog_cc_c99" = "no"], [AC_MSG_ERROR([The compiler does not support C99])])

# Enable available system extensions and LFS support
AC_USE_SYSTEM_EXTENSIONS
AC_SYS_LARGEFILE

# Make sure the C compiler supports __attribute__
AX_C___ATTRIBUTE__
AS_IF([test "x$ax_cv___attribute__" != "xyes"],
  [AC_MSG_ERROR([The compiler does not support __attribute__ extensions])])

# Make sure we have pthread support
AX_PTHREAD([], [AC_MSG_ERROR([Could not configure pthread support])])

# Make sure the C compiler supports weak symbols
AX_SYS_WEAK_ALIAS
AS_IF([test "x$ax_cv_sys_weak_alias" = "xno"],
  [AC_MSG_ERROR([Your platform doesn't support weak symbols.])])

# Checks for typedefs, structures, and compiler characteristics.
AC_C_INLINE
AC_C_TYPEOF
AC_TYPE_INT16_T
AC_TYPE_INT32_T
AC_TYPE_INT64_T
AC_TYPE_INT8_T
AC_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T
AC_TYPE_UID_T
AC_TYPE_UINT16_T
AC_TYPE_UINT32_T
AC_TYPE_UINT64_T
AC_TYPE_UINT8_T
AC_CHECK_TYPES([ptrdiff_t])


##                     ##
## C++ compiler checks ##
##                     ##

# Find an optional C++11 compiler without GNU extensions (-std=c++11)
AX_CXX_COMPILE_STDCXX([11], [noext], [optional])
AM_CONDITIONAL([HAVE_CXX], [test "$HAVE_CXX11" = "1"])


##               ##
## Header checks ##
##               ##

AC_HEADER_STDBOOL
AC_CHECK_HEADERS([ \
  arpa/inet.h \
  dlfcn.h \
  fcntl.h \
  float.h \
  limits.h \
  linux/perf_event.h \
  locale.h \
  stddef.h \
  sys/socket.h \
  sys/time.h \
  wchar.h \
])

# Check for dlinfo() by testing for RTLD_DI_LINKMAP in dlfcn.h
AS_IF([test "x$ac_cv_header_dlfcn_h" = "xyes"], [
  AC_CHECK_DECL([RTLD_DI_LINKMAP], [], [], [[#include <dlfcn.h>]])
])


##                 ##
## Programs checks ##
##                 ##

AM_PROG_AR
AC_PROG_SED
AC_PROG_GREP
AC_PROG_LN_S
AC_PROG_MKDIR_P
AC_PROG_MAKE_SET
AC_CHECK_PROGS([ASCIIDOC], [asciidoc])
AC_CHECK_PROGS([CMAKE], [cmake])
AC_CHECK_PROGS([FOLD], [fold])
AC_CHECK_PROGS([XMLTO], [xmlto])

AM_PATH_PYTHON([2.7], [], [PYTHON=""])

AX_PROG_JAVAC
AX_PROG_JAVA
AX_PROG_JAR

# Initialize and configure libtool
LT_INIT([disable-static])


AM_CONDITIONAL([HAVE_CMAKE], [test "x$CMAKE" != "x"])

AC_MSG_CHECKING([whether shared libraries are enabled])
AS_IF([test "x$enable_shared" = "xyes"], [
	AC_MSG_RESULT([yes])
], [
	AC_MSG_RESULT([no])
	AC_MSG_ERROR([LTTng-UST requires shared libraries to be enabled])
])

# Checks for library functions.
AC_FUNC_CHOWN
AC_FUNC_FORK
AC_FUNC_MMAP
AC_FUNC_REALLOC
AC_FUNC_STRERROR_R
AC_FUNC_STRNLEN
AC_CHECK_FUNCS([ \
	atexit \
	clock_gettime \
	ftruncate \
	getpagesize \
	gettimeofday \
	localeconv \
	memchr \
	memmove \
	memset \
	mkdir \
	munmap \
	realpath \
	sched_getcpu \
	socket \
	strchr \
	strdup \
	strerror \
	strtol \
	strtoul \
	sysconf \
])

# Check for pthread_setname_np and its signature
LTTNG_PTHREAD_SETNAME_NP
LTTNG_PTHREAD_GETNAME_NP

# AC_FUNC_MALLOC causes problems when cross-compiling.
#AC_FUNC_MALLOC

# Set architecture specific options
AS_CASE([$host_cpu],
	[i[[3456]]86], [],
	[x86_64], [],
	[amd64], [],
	[powerpc], [],
	[ppc64], [],
	[ppc64le], [],
	[powerpc64], [],
	[powerpc64le], [],
	[s390], [],
	[s390x], [],
	[arm*], [
		NO_NUMA=1
		],
	[aarch64*], [],
	[mips*], [],
	[tile*], [],
	[
		UNSUPPORTED_ARCH=1
	])

# Set os specific options
AS_CASE([$host_os],
	[freebsd*], [NO_NUMA=1]
)

# Configuration options, which will be installed in the config.h
AH_TEMPLATE([LTTNG_UST_HAVE_SDT_INTEGRATION], [SystemTap integration via sdt.h])

# Checks for libraries.
AC_CHECK_LIB([dl], [dlopen], [
	libdl_name=dl
	DL_LIBS="-ldl"
], [
	#libdl not found, check for dlopen in libc.
	AC_CHECK_LIB([c], [dlopen], [
		libdl_name=c
		DL_LIBS="-lc"
	], [
		AC_MSG_ERROR([Cannot find dlopen in libdl nor libc. Use [LDFLAGS]=-Ldir to specify their location.])
	])
])
AC_SUBST(DL_LIBS)

# Check if libdl has dlmopen support.
AH_TEMPLATE([HAVE_DLMOPEN], ["Define to 1 if dlmopen is available."])
AC_CHECK_LIB([$libdl_name], [dlmopen],
	[AC_DEFINE([HAVE_DLMOPEN], [1])]
)

AM_CONDITIONAL([ENABLE_UST_DL], [test "x${ac_cv_have_decl_RTLD_DI_LINKMAP}" = "xyes"])

# Require URCU >= 0.12 for DEFINE_URCU_TLS_INIT
PKG_CHECK_MODULES([URCU], [liburcu >= 0.12])

# numa.h integration
AS_IF([test "x$NO_NUMA" = "x1"],[
      AS_IF([test "x$enable_numa" = "x" ], [enable_numa=no])
])

AC_ARG_ENABLE([numa], [
AS_HELP_STRING([--disable-numa], [disable NUMA support])
], [
	enable_numa=$enableval
], [
	enable_numa=yes
])

AS_IF([test "x$enable_numa" = "xyes"], [
	# numa - check that numa lib is available
	AC_CHECK_LIB([numa], [numa_available], [],
[AC_MSG_ERROR([libnuma is not available. Please either install it (e.g. libnuma-dev) or use [LDFLAGS]=-Ldir to specify the right location, or use --disable-numa configure argument to disable NUMA support.])])
	have_libnuma=yes
])
AM_CONDITIONAL([ENABLE_NUMA], [test "x$have_libnuma" = "xyes"])

AM_CONDITIONAL([HAVE_PERF_EVENT], [test "x$ac_cv_header_linux_perf_event_h" = "xyes"])

# Check for JNI header files if requested
AC_ARG_ENABLE([jni-interface], [
AS_HELP_STRING([--enable-jni-interface], [build JNI interface between C and Java. Needs Java include files [default=no]])
], [
	jni_interface=$enableval
], [
	jni_interface=no
])

AM_CONDITIONAL([ENABLE_JNI_INTERFACE], [test "x$jni_interface" = "xyes"])


AC_ARG_ENABLE([java-agent-jul], [
AS_HELP_STRING([--enable-java-agent-jul], [build the LTTng UST Java agent with JUL support [default=no]])
], [
	java_agent_jul=$enableval
], [
	java_agent_jul=no
])

AC_ARG_ENABLE([java-agent-log4j], [
AS_HELP_STRING([--enable-java-agent-log4j], [build the LTTng UST Java agent with Log4j support [default=no]])
], [
	java_agent_log4j=$enableval
], [
	java_agent_log4j=no
])

AC_ARG_ENABLE([java-agent-all], [
AS_HELP_STRING([--enable-java-agent-all], [build the LTTng UST Java agent with all supported backends [default=no]])
], [
	java_agent_jul=$enableval
	java_agent_log4j=$enableval
], [:])

AM_CONDITIONAL([ENABLE_JAVA_AGENT], [test "x$java_agent_jul" = "xyes" || test "x$java_agent_log4j" = "xyes"])
AM_CONDITIONAL([ENABLE_JAVA_AGENT_WITH_JUL], [test "x$java_agent_jul" = "xyes"])
AM_CONDITIONAL([ENABLE_JAVA_AGENT_WITH_LOG4J], [test "x$java_agent_log4j" = "xyes"])

AS_IF([test "x$jni_interface" = "xyes" || test "x$java_agent_jul" = "xyes" || test "x$java_agent_log4j" = "xyes"], [
	AX_JAVA_OPTIONS
	AC_ARG_VAR([CLASSPATH], [Java class path])

	AX_JNI_INCLUDE_DIR
	for JNI_INCLUDE_DIR in $JNI_INCLUDE_DIRS
	do
		JNI_CPPFLAGS="$JNI_CPPFLAGS -I$JNI_INCLUDE_DIR"
	done

	saved_CPPFLAGS="$CPPFLAGS"
	CPPFLAGS="$CPPFLAGS $JNI_CPPFLAGS"
	AX_PROG_JAVAH
	CPPFLAGS="$saved_CPPFLAGS"
])

AM_CONDITIONAL([HAVE_JAVAH], [test "x$JAVAH" != "x"])

AS_IF([test "x$java_agent_log4j" = "xyes"], [
	AX_CHECK_CLASSPATH
	AX_CHECK_CLASS([org.apache.log4j.Logger])
	AS_IF([test "x$ac_cv_class_org_apache_log4j_Logger" = "xno"], [
		AC_MSG_ERROR([The UST Java agent support for log4j was requested but the Log4j classes were not found. Please specify the location of the Log4j jar via the Java CLASSPATH e.g: export CLASSPATH="/path/to/log4j.jar"])
	])
])

# Option to build the python agent
AC_ARG_ENABLE([python-agent], [
AS_HELP_STRING([--enable-python-agent], [build the LTTng UST Python agent [default=no]])
], [
	python_agent=$enableval
], [:])
AM_CONDITIONAL([ENABLE_PYTHON_AGENT], [test "x$python_agent" = "xyes"])

# sdt.h integration
AC_ARG_WITH([sdt], [
AS_HELP_STRING([--with-sdt], [provide SystemTap integration via sdt.h [default=no]])
], [
	with_sdt=$withval
], [
	with_sdt="no"
])

AS_IF([test "x$with_sdt" = "xyes"], [
	AC_MSG_CHECKING([STAP_PROBEV()])
	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
		#define SDT_USE_VARIADIC
		#include <sys/sdt.h>
		void fct(void)
		{
			STAP_PROBEV(provider,name,1,2,3,4,5,6,7,8,9,10);
		}
	]])], [
		AC_MSG_RESULT([yes])
		AC_DEFINE([LTTNG_UST_HAVE_SDT_INTEGRATION], [1])
	], [
		AC_MSG_RESULT([no])
		AC_MSG_ERROR([The sdt.h integration was requested but the STAP_PROBEV define cannot be used. Make sure it is installed, and up to date, or use CPPFLAGS=-I/path/ to specify a non-standard path to sys/sdt.h])
	])
])

AC_ARG_WITH([lttng-system-rundir], [
AS_HELP_STRING([--with-lttng-system-rundir], [Location of the system directory where LTTng-UST expects the system-wide lttng-sessiond runtime files. The default is "/var/run/lttng".]),
], [
	lttng_system_rundir="$withval"
], [
	lttng_system_rundir="/var/run/lttng"
])
AC_DEFINE_UNQUOTED([LTTNG_SYSTEM_RUNDIR], ["$lttng_system_rundir"],
		[LTTng system runtime directory])

AM_CONDITIONAL([ENABLE_GEN_TP_EXAMPLES], [test "x$PYTHON" != "x"])

# Enable building examples
AC_ARG_ENABLE(
	examples,
	AS_HELP_STRING(
		[--disable-examples],
		[Do not build and install examples]
	),
	[enable_examples=$enableval],
	[enable_examples=yes]
)

AM_CONDITIONAL([ENABLE_EXAMPLES], [test "x$enable_examples" != "xno"])

# Enable building man pages (user's intention).
AC_ARG_ENABLE(
	man-pages,
	AS_HELP_STRING(
		[--disable-man-pages],
		[Do not build and install man pages (already built in a distributed tarball)]
	),
	[man_pages_opt=$enableval],
	[man_pages_opt=yes]
)

# Check for asciidoc and xmlto if we enabled building the man pages.
have_asciidoc_xmlto=no
warn_prebuilt_man_pages=no

AS_IF([test "x$man_pages_opt" = "xyes"], [
	AS_IF([test "x$ASCIIDOC" = "x" || test "x$XMLTO" = "x"], [
		AE_IF_IN_GIT_REPO([
			# This is an error because we're in the Git repo, which
			# means the man pages are not already generated for us,
			# thus asciidoc/xmlto are required because we were asked
			# to build the man pages.
			AC_MSG_ERROR([
Both asciidoc and xmlto are needed to build the LTTng-UST man pages. Use
--disable-man-pages to disable building the man pages, in which case
they will not be installed.
			])
		], [
			# Only warn here: since we're in the tarball, the man
			# pages should already be generated at this point, thus
			# asciidoc/xmlto are not strictly required.
			warn_prebuilt_man_pages=yes
		])
	], [
		have_asciidoc_xmlto=yes
	])
])

# Export man page build condition: build the man pages if the user
# asked for it, and if the tools are available.
AM_CONDITIONAL([ENABLE_MAN_PAGES], [test "x$man_pages_opt" != "xno"])
AM_CONDITIONAL([HAVE_ASCIIDOC_XMLTO], [test "x$have_asciidoc_xmlto" = "xyes"])


# Defined in include/lttng/ust-version.h
AC_DEFINE([LTTNG_UST_MAJOR_VERSION], ust_version_major, [LTTng UST major version])
AC_DEFINE([LTTNG_UST_MINOR_VERSION], ust_version_minor, [LTTng UST minor version])
AC_DEFINE([LTTNG_UST_PATCHLEVEL_VERSION], ust_version_patch, [LTTng UST patch version])
AC_DEFINE([LTTNG_UST_VERSION], ["]ust_version["], [LTTng UST version string])
AC_DEFINE([LTTNG_UST_LIB_SONAME_MAJOR], [ust_lib_version_current], [Major SONAME number of liblttng-ust])
AC_DEFINE([LTTNG_UST_CTL_LIB_SONAME_MAJOR], [ust_ctl_lib_version_current], [Major SONAME number of liblttng-ust-ctl])


AM_CFLAGS="-Wall $URCU_CFLAGS $PTHREAD_CFLAGS"
AC_SUBST(AM_CFLAGS)

AM_CXXFLAGS="$AM_CFLAGS"
AC_SUBST(AM_CXXFLAGS)

# The order in which the include folders are searched is important.
# The top_builddir should always be searched first in the event that a build
# time generated file is included.
AM_CPPFLAGS="-I\$(top_builddir)/include -I\$(top_srcdir)/include -include config.h"
AC_SUBST(AM_CPPFLAGS)

AC_SUBST(JNI_CPPFLAGS)


##                                     ##
## Output files generated by configure ##
##                                     ##

# List of files to be generated from '.in' templates by AC_OUTPUT
AC_CONFIG_FILES([
	Makefile
	doc/Makefile
	doc/examples/Makefile
	doc/man/Makefile
	include/Makefile
	snprintf/Makefile
	libcounter/Makefile
	libmsgpack/Makefile
	libringbuffer/Makefile
	liblttng-ust-comm/Makefile
	liblttng-ust/Makefile
	liblttng-ust-ctl/Makefile
	liblttng-ust-fork/Makefile
	liblttng-ust-dl/Makefile
	liblttng-ust-fd/Makefile
	liblttng-ust-java/Makefile
	liblttng-ust-java-agent/Makefile
	liblttng-ust-java-agent/java/Makefile
	liblttng-ust-java-agent/java/lttng-ust-agent-all/Makefile
	liblttng-ust-java-agent/java/lttng-ust-agent-common/Makefile
	liblttng-ust-java-agent/java/lttng-ust-agent-jul/Makefile
	liblttng-ust-java-agent/java/lttng-ust-agent-log4j/Makefile
	liblttng-ust-java-agent/jni/Makefile
	liblttng-ust-java-agent/jni/common/Makefile
	liblttng-ust-java-agent/jni/jul/Makefile
	liblttng-ust-java-agent/jni/log4j/Makefile
	liblttng-ust-libc-wrapper/Makefile
	liblttng-ust-cyg-profile/Makefile
	liblttng-ust-python-agent/Makefile
	python-lttngust/Makefile
	python-lttngust/setup.py
	python-lttngust/lttngust/__init__.py
	tools/Makefile
	tests/Makefile
	tests/compile/Makefile
	tests/compile/ctf-types/Makefile
	tests/compile/hello.cxx/Makefile
	tests/compile/hello/Makefile
	tests/compile/hello-many/Makefile
	tests/compile/same_line_tracepoint/Makefile
	tests/compile/test-app-ctx/Makefile
	tests/benchmark/Makefile
	tests/unit/gcc-weak-hidden/Makefile
	tests/unit/libmsgpack/Makefile
	tests/unit/Makefile
	tests/unit/libringbuffer/Makefile
	tests/unit/pthread_name/Makefile
	tests/unit/snprintf/Makefile
	tests/unit/ust-elf/Makefile
	tests/utils/Makefile
	lttng-ust.pc
	lttng-ust-ctl.pc
])

AC_OUTPUT


##                                    ##
## Mini-report on what will be built. ##
##                                    ##

PPRINT_INIT
PPRINT_SET_INDENT(1)
PPRINT_SET_TS(38)

AS_ECHO
AS_IF([test -n "ust_version_name"], [
  AS_ECHO("${PPRINT_COLOR_BLDBLU}LTTng-ust $PACKAGE_VERSION \"ust_version_name\"$PPRINT_COLOR_RST")
], [
  AS_ECHO("${PPRINT_COLOR_BLDBLU}LTTng-ust $PACKAGE_VERSION")
])

AS_ECHO

AS_IF([test -n "ust_version_description"], [
  AS_IF([test -n "$FOLD"], [
    AS_ECHO("`AS_ECHO("ust_version_description") | $FOLD -s`")
  ], [
    AS_ECHO("ust_version_description")
  ])
  AS_ECHO
])

PPRINT_SUBTITLE([System])

PPRINT_PROP_STRING([Target architecture], $host_cpu)

AS_IF([test "x$UNSUPPORTED_ARCH" = "x1"],[
       PPRINT_WARN([Your architecture ($host_cpu) is unsupported, using safe default of no unaligned access.])
])

AS_ECHO
PPRINT_SUBTITLE([Features])
PPRINT_SET_INDENT(1)

test "x$with_sdt" = "xyes" && value=1 || value=0
PPRINT_PROP_BOOL_CUSTOM([sdt.h integration], $value, [use --with-sdt])

test "x$java_agent_jul" = xyes && value=1 || value=0
PPRINT_PROP_BOOL_CUSTOM([Java agent (JUL support)], $value, [use --enable-java-agent-jul])

test "x$java_agent_log4j" = xyes && value=1 || value=0
PPRINT_PROP_BOOL_CUSTOM([Java agent (Log4j support)], $value, [use --enable-java-agent-log4j])

test "x$jni_interface" = xyes && value=1 || value=0
PPRINT_PROP_BOOL_CUSTOM([JNI interface (JNI)], $value, [use --enable-jni-interface])

test "x$python_agent" = xyes && value=1 || value=0
PPRINT_PROP_BOOL_CUSTOM([Python agent], $value, [use --enable-python-agent])

test "x$ac_cv_header_linux_perf_event_h" = "xyes" && value=1 || value=0
PPRINT_PROP_BOOL_CUSTOM([Perf event integration], $value)

test "x$enable_numa" = xyes && value=1 || value=0
PPRINT_PROP_BOOL([NUMA], $value)

AS_ECHO
PPRINT_SET_INDENT(0)

test "x$enable_examples" = xyes && value=1 || value=0
PPRINT_PROP_BOOL([Build and install examples], $value, $PPRINT_COLOR_SUBTITLE)

# man pages build enabled/disabled
m4_pushdef([build_man_pages_msg], [Build and install man pages])

AS_IF([test "x$man_pages_opt" != "xno"], [
	AE_IF_IN_GIT_REPO([
		PPRINT_PROP_BOOL([build_man_pages_msg], 1, $PPRINT_COLOR_SUBTITLE)
	], [
		AS_IF([test "x$have_asciidoc_xmlto" = "xyes"], [
			PPRINT_PROP_BOOL([build_man_pages_msg], 1, $PPRINT_COLOR_SUBTITLE)
		], [
			PPRINT_PROP_STRING([build_man_pages_msg],
				[${PPRINT_COLOR_BLDGRN}yes (already built)],
				$PPRINT_COLOR_SUBTITLE)
		])
	])
], [
	PPRINT_PROP_BOOL([build_man_pages_msg], 0, $PPRINT_COLOR_SUBTITLE)
])

m4_popdef([build_man_pages_msg])

PPRINT_SET_INDENT(1)

report_bindir="`eval eval echo $bindir`"
report_libdir="`eval eval echo $libdir`"

# Print the bindir and libdir this `make install' will install into.
AS_ECHO
PPRINT_SUBTITLE([Install directories])
PPRINT_PROP_STRING([Binaries], [$report_bindir])
PPRINT_PROP_STRING([Libraries], [$report_libdir])

AS_ECHO
PPRINT_SUBTITLE([System directories])

PPRINT_PROP_STRING([lttng-sessiond rundir], [$lttng_system_rundir])

PPRINT_SET_INDENT(0)

AS_IF([test "x$warn_prebuilt_man_pages" = "xyes" ], [
	AS_ECHO
	PPRINT_WARN([Both asciidoc and xmlto are needed to build the LTTng-UST man pages.

Note that the man pages are already built in this distribution tarball,
therefore asciidoc and xmlto are only needed if you intend to modify
their sources.

Use --disable-man-pages to completely disable building and installing
the man pages.])
])