[lttng-ust.git] / configure.ac

#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.

m4_define([V_MAJOR], [2])
m4_define([V_MINOR], [8])
m4_define([V_PATCH], [0])
m4_define([V_EXTRA], [pre])
m4_define([V_STRING], [V_MAJOR.V_MINOR.V_PATCH])
m4_ifdef([V_EXTRA], [m4_append([V_STRING], [-V_EXTRA])])

AC_INIT([lttng-ust],V_STRING,[mathieu dot desnoyers at efficios dot com])

# Following the numbering scheme proposed by libtool for the library version
# http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
# This is the library version of liblttng-ust.
AC_SUBST([LTTNG_UST_LIBRARY_VERSION], [0:0:0])
# note: remember to update tracepoint.h dlopen() to match this version
# number. TODO: eventually automate by exporting the major number.

# This is the library version of liblttng-ust-ctl, used internally by
# liblttng-ust, lttng-sessiond, and lttng-consumerd.
AC_SUBST([LTTNG_UST_CTL_LIBRARY_VERSION], [2:0:0])

AC_CONFIG_AUX_DIR([config])
AC_CANONICAL_TARGET
AC_CANONICAL_HOST
AC_CONFIG_MACRO_DIR([config])
AM_INIT_AUTOMAKE([1.9 foreign dist-bzip2 no-dist-gzip tar-ustar])
AM_MAINTAINER_MODE([enable])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
AC_CONFIG_SRCDIR([include/lttng/tracepoint.h])

# Configuration options, which will be installed in the config.h
AC_CONFIG_HEADERS([config.h include/lttng/ust-config.h])
AH_TEMPLATE([LTTNG_UST_HAVE_EFFICIENT_UNALIGNED_ACCESS], [Use efficient unaligned access.])
AH_TEMPLATE([LTTNG_UST_HAVE_SDT_INTEGRATION], [SystemTap integration via sdt.h])
AH_TEMPLATE([LTTNG_UST_HAVE_PERF_EVENT], [Perf event integration via perf_event.h])

# Substitute minor/major/patchlevel version numbers
AC_PROG_SED
AC_SUBST([MAJOR_VERSION], [V_MAJOR])
AC_SUBST([MINOR_VERSION], [V_MINOR])
AC_SUBST([PATCHLEVEL_VERSION], [V_PATCH])

version_name="Herbe à Détourne"
version_description='Brewed with unrestrained amounts of Citra hop, the Herbe à Détourne is a fantastic New World Tripel brewed by "Dieu du Ciel!". Aromas of mango, cantaloupe melon and passion fruit, combined with a controlled bitter finish, unite in making this smooth golden-orange beer stand apart.'
version_description_c=$(echo $version_description | sed 's/"/\\"/g')

AC_DEFINE_UNQUOTED([VERSION_NAME], ["$version_name"], [UST version name])
AC_DEFINE_UNQUOTED([VERSION_DESCRIPTION], ["$version_description_c"], [UST version description])

AC_PROG_GREP
AC_PROG_LN_S
# libtool link_all_deplibs fixup. See http://bugs.lttng.org/issues/321.
AC_ARG_ENABLE(libtool-linkdep-fixup,
	AS_HELP_STRING([--disable-libtool-linkdep-fixup],
			[disable the libtool fixup for linking all dependent libraries (link_all_deplibs)]),
	libtool_fixup=$enableval,
	libtool_fixup=yes)

AS_IF([test "x$libtool_fixup" = "xyes"],
	    [
	    libtool_m4="$srcdir/config/libtool.m4"
	    libtool_flag_pattern=".*link_all_deplibs\s*,\s*\$1\s*)"
	    AC_MSG_CHECKING([for occurence(s) of link_all_deplibs = no in $libtool_m4])
	    libtool_flag_pattern_count=$(grep -c "$libtool_flag_pattern\s*=\s*no" $libtool_m4)
	    AS_IF([test $libtool_flag_pattern_count -ne 0],
	    [
		  AC_MSG_RESULT([$libtool_flag_pattern_count])
		  AC_MSG_WARN([the detected libtool will not link all dependencies, forcing link_all_deplibs = unknown])
		  sed -i "s/\($libtool_flag_pattern\)\s*=\s*no/\1=unknown/g" $libtool_m4
		  ],
		  [
		  AC_MSG_RESULT([none])
		  ])
	    ])

AM_CONDITIONAL([NO_SHARED], [test "x$enable_shared" = "xno"])

# Checks for programs.
AC_PROG_CC
AC_PROG_CXX
AC_PROG_MAKE_SET
LT_INIT

# rw_PROG_CXX_WORKS
# Check whether the C++ compiler works.
AC_CACHE_CHECK([whether the C++ compiler works],
		[rw_cv_prog_cxx_works],
		[AC_LANG_PUSH([C++])
		AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
				[check_cxx_designated_initializers=yes],
				[rw_cv_prog_cxx_works=no])
		if test "$check_cxx_designated_initializers" = "yes"; then
			AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
				struct foo { int a; int b; };
				void fct(void)
				{
					struct foo f = { .a = 0, .b = 1 };
				}
			]])],[
				rw_cv_prog_cxx_works=yes
			],[
				rw_cv_prog_cxx_works=no
			])
		fi
		AC_LANG_POP([C++])])

AM_CONDITIONAL([CXX_WORKS], [test "x$rw_cv_prog_cxx_works" = "xyes"])

# Check if the compiler support weak symbols
AX_SYS_WEAK_ALIAS

if test "x${ax_cv_sys_weak_alias}" = "xno"; then
   AC_MSG_ERROR([Your platform doesn't support weak symbols.])
fi

## Checks for libraries.
AC_CHECK_LIB([dl], [dlopen],
[
	have_libdl=yes
],
[
	#libdl not found, check for dlopen in libc.
	AC_CHECK_LIB([c], [dlopen],
	[
		have_libc_dl=yes
	],
	[
		AC_MSG_ERROR([Cannot find dlopen in libdl nor libc. Use [LDFLAGS]=-Ldir to specify their location.])
	])
])
AM_CONDITIONAL([LTTNG_UST_BUILD_WITH_LIBDL], [test "x$have_libdl" = "xyes"])
AM_CONDITIONAL([LTTNG_UST_BUILD_WITH_LIBC_DL], [test "x$have_libc_dl" = "xyes"])

AC_CHECK_LIB([pthread], [pthread_create])

# Check for dlfcn.h
AC_CHECK_HEADER([dlfcn.h])
AS_IF([test "x${ac_cv_header_dlfcn_h}" = "xyes"],
	[AC_CHECK_DECLS([RTLD_DI_LINKMAP],,,
		[#define _GNU_SOURCE /* Required on Linux to get GNU extensions */
		#include <dlfcn.h>])
	],
	[ac_cv_have_decl_RTLD_DI_LINKMAP="no"])
AM_CONDITIONAL([HAVE_DLINFO], [test "x${ac_cv_have_decl_RTLD_DI_LINKMAP}" = "xyes"])

# Checks for header files.
#AC_CHECK_HEADERS([fcntl.h stdint.h stdlib.h string.h sys/socket.h sys/time.h unistd.h])

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

# Checks for library functions.
AC_FUNC_MALLOC
AC_CHECK_FUNCS([gettimeofday munmap socket strerror strtol sched_getcpu sysconf])

CFLAGS="-Wall $CFLAGS"

# URCU

# urcu - check if we just find the headers it out of the box.
AC_CHECK_HEADERS([urcu-bp.h], [], [AC_MSG_ERROR([Cannot find [URCU] headers (urcu-bp.h). Use [CPPFLAGS]=-Idir to specify their location.
This error can also occur when the liburcu package's configure script has not been run.])])

# urcu-cds - check that URCU Concurrent Data Structure lib is available to compilation
# Part of Userspace RCU library 0.7.2 or better.
AC_CHECK_LIB([urcu-cds], [_cds_lfht_new], [], [AC_MSG_ERROR([Cannot find
liburcu-cds lib, part of Userspace RCU 0.7 or better. Use [LDFLAGS]=-Ldir to specify its location.])])

AC_MSG_CHECKING([caa_likely()])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
#include <urcu/compiler.h>
void fct(void)
{
	if (caa_likely(1)) {
	}
}
]])],[
	AC_MSG_RESULT([yes])
],[
	AC_MSG_RESULT([no])
	AC_MSG_ERROR([Please upgrade your version of liburcu to 0.6.6 or better])

])

# urcu - check that URCU lib is available to compilation
AC_CHECK_LIB([urcu-bp], [synchronize_rcu_bp], [], [AC_MSG_ERROR([Cannot find liburcu-bp lib. Use [LDFLAGS]=-Ldir to specify its location.])])

# urcu - check that URCU lib is at least version 0.6
AC_CHECK_LIB([urcu-bp], [call_rcu_bp], [], [AC_MSG_ERROR([liburcu 0.6 or newer is needed, please update your version or use [LDFLAGS]=-Ldir to specify the right location.])])

# optional linux/perf_event.h
AC_CHECK_HEADERS([linux/perf_event.h], [have_perf_event=yes], [])

# Perf event counters are only supported on x86 so far.
AC_MSG_CHECKING([UST support for architecture perf event counters])
case $host_cpu in
changequote(,)dnl
	i[3456]86)
changequote([,])dnl
	UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS=yes;;
	x86_64) UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS=yes;;
	amd64) UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS=yes;;
	*) UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS=no;;
esac
AC_MSG_RESULT([$UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS])

AM_CONDITIONAL([HAVE_PERF_EVENT], [test "x$have_perf_event" = "xyes" -a "x$UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS" = "xyes"])

if test "x$have_perf_event" = "xyes" -a "x$UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS" = "xyes"; then
AC_DEFINE([LTTNG_UST_HAVE_PERF_EVENT], [1])
fi

AC_MSG_CHECKING([host system alignment requirements])
case $host_cpu in
changequote(,)dnl
	i[3456]86)
changequote([,])dnl
	  ;;
	x86_64) ;;
	amd64) ;;
	powerpc) ;;
	ppc64) ;;
	ppc64le) ;;
	powerpc64) ;;
	powerpc64le) ;;
	s390) NO_UNALIGNED_ACCESS=1 ;;
	s390x) NO_UNALIGNED_ACCESS=1 ;;
        arm*) NO_UNALIGNED_ACCESS=1 ;;
	aarch64) NO_UNALIGNED_ACCESS=1 ;;
	mips*) NO_UNALIGNED_ACCESS=1 ;;
	tile*) NO_UNALIGNED_ACCESS=1 ;;
	*)
		UNSUPPORTED_ARCH=1
		NO_UNALIGNED_ACCESS=1
		;;
esac
AC_MSG_RESULT([$host_cpu])

if test x$NO_UNALIGNED_ACCESS = x ; then
AC_DEFINE([LTTNG_UST_HAVE_EFFICIENT_UNALIGNED_ACCESS], [1])
fi

# 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([BUILD_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([BUILD_JAVA_AGENT], [test "x$java_agent_jul" = "xyes" || test "x$java_agent_log4j" = "xyes"])
AM_CONDITIONAL([BUILD_JAVA_AGENT_WITH_JUL], [test "x$java_agent_jul" = "xyes"])
AM_CONDITIONAL([BUILD_JAVA_AGENT_WITH_LOG4J], [test "x$java_agent_log4j" = "xyes"])

if test "x$jni_interface" = "xyes" || test "x$java_agent_jul" = "xyes" || test "x$java_agent_log4j" = "xyes"; then
  AX_JAVA_OPTIONS
  AX_PROG_JAVAC
  AX_PROG_JAVA
  AX_PROG_JAR

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

  AX_PROG_JAVAH
fi

if test "x$java_agent_log4j" = "xyes"; then
  AX_CHECK_CLASSPATH

  AX_CHECK_CLASS(org.apache.log4j.Logger)

  if test "x$ac_cv_class_org_apache_log4j_Logger" = "xno"; then
     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"])
  fi
fi

# 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=$enableval],
	[:]
)
AM_CONDITIONAL([BUILD_PYTHON_AGENT], [test "x$python_agent" = "xyes"])
if test "x$python_agent" = "xyes"; then
	AM_PATH_PYTHON([2.7])
fi

# 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_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])
	])

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])

AC_CHECK_PROG([BUILD_GEN_TP_EXAMPLES],[python],["yes"])
AM_CONDITIONAL([BUILD_GEN_TP_EXAMPLES], [test $BUILD_GEN_TP_EXAMPLES], [Build examples requiring lttng-gen-tp])

AC_CONFIG_FILES([
	Makefile
	doc/Makefile
	doc/examples/Makefile
	include/Makefile
	include/lttng/ust-version.h
	snprintf/Makefile
	libringbuffer/Makefile
	liblttng-ust-comm/Makefile
	liblttng-ust/Makefile
	liblttng-ust-ctl/Makefile
	liblttng-ust-fork/Makefile
	liblttng-ust-dl/Makefile
	liblttng-ust-java/Makefile
	liblttng-ust-java-agent/Makefile
	liblttng-ust-java-agent/java/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/ctf-types/Makefile
	tests/hello/Makefile
	tests/hello.cxx/Makefile
	tests/same_line_tracepoint/Makefile
	tests/snprintf/Makefile
	tests/ust-elf/Makefile
	tests/benchmark/Makefile
	tests/utils/Makefile
	tests/test-app-ctx/Makefile
	lttng-ust.pc
])

# Create link for python agent for the VPATH guru.
AC_CONFIG_LINKS([
	python-lttngust/lttngust/agent.py:python-lttngust/lttngust/agent.py
	python-lttngust/lttngust/cmd.py:python-lttngust/lttngust/cmd.py
	python-lttngust/lttngust/debug.py:python-lttngust/lttngust/debug.py
	python-lttngust/lttngust/loghandler.py:python-lttngust/lttngust/loghandler.py
])

AC_OUTPUT

AS_ECHO()
AS_ECHO("Version name: $version_name")
AS_ECHO("$version_description")

# Report on the configuration options
AS_ECHO()
AS_ECHO("LTTng-UST will be built with the following options:")

AS_ECHO()

AS_ECHO_N("Java agent (JUL support): ")
AS_IF([test "x$java_agent_jul" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])

AS_ECHO_N("Java agent (Log4j support): ")
AS_IF([test "x$java_agent_log4j" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])

AS_ECHO_N("JNI interface (JNI): ")
AS_IF([test "x$jni_interface" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])

AS_ECHO_N("Python ($PYTHON) agent: ")
AS_IF([test "x$python_agent" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])

AS_ECHO_N("sdt.h integration: ")
AS_IF([test "x$with_sdt" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])

AS_ECHO("Architecture: $host_cpu")
AS_ECHO_N("Efficient unaligned memory access: ")
AS_IF([test "x$NO_UNALIGNED_ACCESS" != "x1"], [AS_ECHO("yes")], [AS_IF([test "x$UNSUPPORTED_ARCH" != "x1"], [AS_ECHO("no")], [AS_ECHO("unknown")])])
AS_IF([test "x$UNSUPPORTED_ARCH" = "x1"], [AC_MSG_WARN([Your architecture ($host_cpu) is unsupported, using safe default of no unaligned access])])
AS_ECHO()

AS_ECHO("Type 'make' to compile.")
Commit	Line	Data
	1	# -- Autoconf --
	2	# Process this file with autoconf to produce a configure script.
	3
	4	m4_define([V_MAJOR], [2])
	5	m4_define([V_MINOR], [8])
	6	m4_define([V_PATCH], [0])
	7	m4_define([V_EXTRA], [pre])
	8	m4_define([V_STRING], [V_MAJOR.V_MINOR.V_PATCH])
	9	m4_ifdef([V_EXTRA], [m4_append([V_STRING], [-V_EXTRA])])
	10
	11	AC_INIT([lttng-ust],V_STRING,[mathieu dot desnoyers at efficios dot com])
	12
	13	# Following the numbering scheme proposed by libtool for the library version
	14	# http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
	15	# This is the library version of liblttng-ust.
	16	AC_SUBST([LTTNG_UST_LIBRARY_VERSION], [0:0:0])
	17	# note: remember to update tracepoint.h dlopen() to match this version
	18	# number. TODO: eventually automate by exporting the major number.
	19
	20	# This is the library version of liblttng-ust-ctl, used internally by
	21	# liblttng-ust, lttng-sessiond, and lttng-consumerd.
	22	AC_SUBST([LTTNG_UST_CTL_LIBRARY_VERSION], [2:0:0])
	23
	24	AC_CONFIG_AUX_DIR([config])
	25	AC_CANONICAL_TARGET
	26	AC_CANONICAL_HOST
	27	AC_CONFIG_MACRO_DIR([config])
	28	AM_INIT_AUTOMAKE([1.9 foreign dist-bzip2 no-dist-gzip tar-ustar])
	29	AM_MAINTAINER_MODE([enable])
	30	m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
	31	AC_CONFIG_SRCDIR([include/lttng/tracepoint.h])
	32
	33	# Configuration options, which will be installed in the config.h
	34	AC_CONFIG_HEADERS([config.h include/lttng/ust-config.h])
	35	AH_TEMPLATE([LTTNG_UST_HAVE_EFFICIENT_UNALIGNED_ACCESS], [Use efficient unaligned access.])
	36	AH_TEMPLATE([LTTNG_UST_HAVE_SDT_INTEGRATION], [SystemTap integration via sdt.h])
	37	AH_TEMPLATE([LTTNG_UST_HAVE_PERF_EVENT], [Perf event integration via perf_event.h])
	38
	39	# Substitute minor/major/patchlevel version numbers
	40	AC_PROG_SED
	41	AC_SUBST([MAJOR_VERSION], [V_MAJOR])
	42	AC_SUBST([MINOR_VERSION], [V_MINOR])
	43	AC_SUBST([PATCHLEVEL_VERSION], [V_PATCH])
	44
	45	version_name="Herbe à Détourne"
	46	version_description='Brewed with unrestrained amounts of Citra hop, the Herbe à Détourne is a fantastic New World Tripel brewed by "Dieu du Ciel!". Aromas of mango, cantaloupe melon and passion fruit, combined with a controlled bitter finish, unite in making this smooth golden-orange beer stand apart.'
	47	version_description_c=$(echo $version_description \| sed 's/"/\\"/g')
	48
	49	AC_DEFINE_UNQUOTED([VERSION_NAME], ["$version_name"], [UST version name])
	50	AC_DEFINE_UNQUOTED([VERSION_DESCRIPTION], ["$version_description_c"], [UST version description])
	51
	52	AC_PROG_GREP
	53	AC_PROG_LN_S
	54	# libtool link_all_deplibs fixup. See http://bugs.lttng.org/issues/321.
	55	AC_ARG_ENABLE(libtool-linkdep-fixup,
	56	AS_HELP_STRING([--disable-libtool-linkdep-fixup],
	57	[disable the libtool fixup for linking all dependent libraries (link_all_deplibs)]),
	58	libtool_fixup=$enableval,
	59	libtool_fixup=yes)
	60
	61	AS_IF([test "x$libtool_fixup" = "xyes"],
	62	[
	63	libtool_m4="$srcdir/config/libtool.m4"
	64	libtool_flag_pattern=".link_all_deplibs\s,\s\$1\s)"
	65	AC_MSG_CHECKING([for occurence(s) of link_all_deplibs = no in $libtool_m4])
	66	libtool_flag_pattern_count=$(grep -c "$libtool_flag_pattern\s=\sno" $libtool_m4)
	67	AS_IF([test $libtool_flag_pattern_count -ne 0],
	68	[
	69	AC_MSG_RESULT([$libtool_flag_pattern_count])
	70	AC_MSG_WARN([the detected libtool will not link all dependencies, forcing link_all_deplibs = unknown])
	71	sed -i "s/\($libtool_flag_pattern\)\s=\sno/\1=unknown/g" $libtool_m4
	72	],
	73	[
	74	AC_MSG_RESULT([none])
	75	])
	76	])
	77
	78	AM_CONDITIONAL([NO_SHARED], [test "x$enable_shared" = "xno"])
	79
	80	# Checks for programs.
	81	AC_PROG_CC
	82	AC_PROG_CXX
	83	AC_PROG_MAKE_SET
	84	LT_INIT
	85
	86	# rw_PROG_CXX_WORKS
	87	# Check whether the C++ compiler works.
	88	AC_CACHE_CHECK([whether the C++ compiler works],
	89	[rw_cv_prog_cxx_works],
	90	[AC_LANG_PUSH([C++])
	91	AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
	92	[check_cxx_designated_initializers=yes],
	93	[rw_cv_prog_cxx_works=no])
	94	if test "$check_cxx_designated_initializers" = "yes"; then
	95	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
	96	struct foo { int a; int b; };
	97	void fct(void)
	98	{
	99	struct foo f = { .a = 0, .b = 1 };
	100	}
	101	]])],[
	102	rw_cv_prog_cxx_works=yes
	103	],[
	104	rw_cv_prog_cxx_works=no
	105	])
	106	fi
	107	AC_LANG_POP([C++])])
	108
	109	AM_CONDITIONAL([CXX_WORKS], [test "x$rw_cv_prog_cxx_works" = "xyes"])
	110
	111	# Check if the compiler support weak symbols
	112	AX_SYS_WEAK_ALIAS
	113
	114	if test "x${ax_cv_sys_weak_alias}" = "xno"; then
	115	AC_MSG_ERROR([Your platform doesn't support weak symbols.])
	116	fi
	117
	118	## Checks for libraries.
	119	AC_CHECK_LIB([dl], [dlopen],
	120	[
	121	have_libdl=yes
	122	],
	123	[
	124	#libdl not found, check for dlopen in libc.
	125	AC_CHECK_LIB([c], [dlopen],
	126	[
	127	have_libc_dl=yes
	128	],
	129	[
	130	AC_MSG_ERROR([Cannot find dlopen in libdl nor libc. Use [LDFLAGS]=-Ldir to specify their location.])
	131	])
	132	])
	133	AM_CONDITIONAL([LTTNG_UST_BUILD_WITH_LIBDL], [test "x$have_libdl" = "xyes"])
	134	AM_CONDITIONAL([LTTNG_UST_BUILD_WITH_LIBC_DL], [test "x$have_libc_dl" = "xyes"])
	135
	136	AC_CHECK_LIB([pthread], [pthread_create])
	137
	138	# Check for dlfcn.h
	139	AC_CHECK_HEADER([dlfcn.h])
	140	AS_IF([test "x${ac_cv_header_dlfcn_h}" = "xyes"],
	141	[AC_CHECK_DECLS([RTLD_DI_LINKMAP],,,
	142	[#define _GNU_SOURCE /* Required on Linux to get GNU extensions */
	143	#include <dlfcn.h>])
	144	],
	145	[ac_cv_have_decl_RTLD_DI_LINKMAP="no"])
	146	AM_CONDITIONAL([HAVE_DLINFO], [test "x${ac_cv_have_decl_RTLD_DI_LINKMAP}" = "xyes"])
	147
	148	# Checks for header files.
	149	#AC_CHECK_HEADERS([fcntl.h stdint.h stdlib.h string.h sys/socket.h sys/time.h unistd.h])
	150
	151	# Checks for typedefs, structures, and compiler characteristics.
	152	AC_C_INLINE
	153	#AC_TYPE_INT16_T
	154	#AC_TYPE_INT32_T
	155	#AC_TYPE_INT64_T
	156	#AC_TYPE_INT8_T
	157	#AC_TYPE_PID_T
	158	#AC_TYPE_SIZE_T
	159	#AC_TYPE_SSIZE_T
	160	#AC_TYPE_UINT16_T
	161	#AC_TYPE_UINT32_T
	162	#AC_TYPE_UINT64_T
	163	#AC_TYPE_UINT8_T
	164	#AC_CHECK_TYPES([ptrdiff_t])
	165
	166	# Checks for library functions.
	167	AC_FUNC_MALLOC
	168	AC_CHECK_FUNCS([gettimeofday munmap socket strerror strtol sched_getcpu sysconf])
	169
	170	CFLAGS="-Wall $CFLAGS"
	171
	172	# URCU
	173
	174	# urcu - check if we just find the headers it out of the box.
	175	AC_CHECK_HEADERS([urcu-bp.h], [], [AC_MSG_ERROR([Cannot find [URCU] headers (urcu-bp.h). Use [CPPFLAGS]=-Idir to specify their location.
	176	This error can also occur when the liburcu package's configure script has not been run.])])
	177
	178	# urcu-cds - check that URCU Concurrent Data Structure lib is available to compilation
	179	# Part of Userspace RCU library 0.7.2 or better.
	180	AC_CHECK_LIB([urcu-cds], [_cds_lfht_new], [], [AC_MSG_ERROR([Cannot find
	181	liburcu-cds lib, part of Userspace RCU 0.7 or better. Use [LDFLAGS]=-Ldir to specify its location.])])
	182
	183	AC_MSG_CHECKING([caa_likely()])
	184	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
	185	#include <urcu/compiler.h>
	186	void fct(void)
	187	{
	188	if (caa_likely(1)) {
	189	}
	190	}
	191	]])],[
	192	AC_MSG_RESULT([yes])
	193	],[
	194	AC_MSG_RESULT([no])
	195	AC_MSG_ERROR([Please upgrade your version of liburcu to 0.6.6 or better])
	196
	197	])
	198
	199	# urcu - check that URCU lib is available to compilation
	200	AC_CHECK_LIB([urcu-bp], [synchronize_rcu_bp], [], [AC_MSG_ERROR([Cannot find liburcu-bp lib. Use [LDFLAGS]=-Ldir to specify its location.])])
	201
	202	# urcu - check that URCU lib is at least version 0.6
	203	AC_CHECK_LIB([urcu-bp], [call_rcu_bp], [], [AC_MSG_ERROR([liburcu 0.6 or newer is needed, please update your version or use [LDFLAGS]=-Ldir to specify the right location.])])
	204
	205	# optional linux/perf_event.h
	206	AC_CHECK_HEADERS([linux/perf_event.h], [have_perf_event=yes], [])
	207
	208	# Perf event counters are only supported on x86 so far.
	209	AC_MSG_CHECKING([UST support for architecture perf event counters])
	210	case $host_cpu in
	211	changequote(,)dnl
	212	i[3456]86)
	213	changequote([,])dnl
	214	UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS=yes;;
	215	x86_64) UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS=yes;;
	216	amd64) UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS=yes;;
	217	*) UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS=no;;
	218	esac
	219	AC_MSG_RESULT([$UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS])
	220
	221	AM_CONDITIONAL([HAVE_PERF_EVENT], [test "x$have_perf_event" = "xyes" -a "x$UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS" = "xyes"])
	222
	223	if test "x$have_perf_event" = "xyes" -a "x$UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS" = "xyes"; then
	224	AC_DEFINE([LTTNG_UST_HAVE_PERF_EVENT], [1])
	225	fi
	226
	227	AC_MSG_CHECKING([host system alignment requirements])
	228	case $host_cpu in
	229	changequote(,)dnl
	230	i[3456]86)
	231	changequote([,])dnl
	232	;;
	233	x86_64) ;;
	234	amd64) ;;
	235	powerpc) ;;
	236	ppc64) ;;
	237	ppc64le) ;;
	238	powerpc64) ;;
	239	powerpc64le) ;;
	240	s390) NO_UNALIGNED_ACCESS=1 ;;
	241	s390x) NO_UNALIGNED_ACCESS=1 ;;
	242	arm*) NO_UNALIGNED_ACCESS=1 ;;
	243	aarch64) NO_UNALIGNED_ACCESS=1 ;;
	244	mips*) NO_UNALIGNED_ACCESS=1 ;;
	245	tile*) NO_UNALIGNED_ACCESS=1 ;;
	246	*)
	247	UNSUPPORTED_ARCH=1
	248	NO_UNALIGNED_ACCESS=1
	249	;;
	250	esac
	251	AC_MSG_RESULT([$host_cpu])
	252
	253	if test x$NO_UNALIGNED_ACCESS = x ; then
	254	AC_DEFINE([LTTNG_UST_HAVE_EFFICIENT_UNALIGNED_ACCESS], [1])
	255	fi
	256
	257	# Check for JNI header files if requested
	258	AC_ARG_ENABLE([jni-interface],
	259	[AS_HELP_STRING([--enable-jni-interface],[build JNI interface between C and Java. Needs Java include files [default=no]])],
	260	[jni_interface=$enableval],
	261	[jni_interface=no]
	262	)
	263
	264	AM_CONDITIONAL([BUILD_JNI_INTERFACE], [test "x$jni_interface" = "xyes"])
	265
	266
	267	AC_ARG_ENABLE([java-agent-jul],
	268	[AS_HELP_STRING([--enable-java-agent-jul],[build the LTTng UST Java agent with JUL support [default=no]])],
	269	[java_agent_jul=$enableval],
	270	[java_agent_jul=no]
	271	)
	272
	273	AC_ARG_ENABLE([java-agent-log4j],
	274	[AS_HELP_STRING([--enable-java-agent-log4j],[build the LTTng UST Java agent with Log4j support [default=no]])],
	275	[java_agent_log4j=$enableval],
	276	[java_agent_log4j=no]
	277	)
	278
	279	AC_ARG_ENABLE([java-agent-all],
	280	[AS_HELP_STRING([--enable-java-agent-all],[build the LTTng UST Java agent with all supported backends [default=no]])],
	281	[java_agent_jul=$enableval
	282	java_agent_log4j=$enableval],
	283	[:]
	284	)
	285
	286
	287	AM_CONDITIONAL([BUILD_JAVA_AGENT], [test "x$java_agent_jul" = "xyes" \|\| test "x$java_agent_log4j" = "xyes"])
	288	AM_CONDITIONAL([BUILD_JAVA_AGENT_WITH_JUL], [test "x$java_agent_jul" = "xyes"])
	289	AM_CONDITIONAL([BUILD_JAVA_AGENT_WITH_LOG4J], [test "x$java_agent_log4j" = "xyes"])
	290
	291	if test "x$jni_interface" = "xyes" \|\| test "x$java_agent_jul" = "xyes" \|\| test "x$java_agent_log4j" = "xyes"; then
	292	AX_JAVA_OPTIONS
	293	AX_PROG_JAVAC
	294	AX_PROG_JAVA
	295	AX_PROG_JAR
	296
	297	AX_JNI_INCLUDE_DIR
	298	for JNI_INCLUDE_DIR in $JNI_INCLUDE_DIRS
	299	do
	300	CPPFLAGS="$CPPFLAGS -I$JNI_INCLUDE_DIR"
	301	done
	302
	303	AX_PROG_JAVAH
	304	fi
	305
	306	if test "x$java_agent_log4j" = "xyes"; then
	307	AX_CHECK_CLASSPATH
	308
	309	AX_CHECK_CLASS(org.apache.log4j.Logger)
	310
	311	if test "x$ac_cv_class_org_apache_log4j_Logger" = "xno"; then
	312	AC_MSG_ERROR([The UST Java agent support for log4j was requested but the Log4j classes were not found. Please specify the location of the Log4j jar via the Java CLASSPATH e.g: export CLASSPATH="/path/to/log4j.jar"])
	313	fi
	314	fi
	315
	316	# Option to build the python agent
	317	AC_ARG_ENABLE([python-agent],
	318	[AS_HELP_STRING([--enable-python-agent],[build the LTTng UST Python agent [default=no]])],
	319	[python_agent=$enableval],
	320	[:]
	321	)
	322	AM_CONDITIONAL([BUILD_PYTHON_AGENT], [test "x$python_agent" = "xyes"])
	323	if test "x$python_agent" = "xyes"; then
	324	AM_PATH_PYTHON([2.7])
	325	fi
	326
	327	# sdt.h integration
	328	AC_ARG_WITH([sdt],
	329	[AS_HELP_STRING([--with-sdt],[provide SystemTap integration via sdt.h [default=no]])],
	330	[with_sdt=$withval],
	331	[with_sdt="no"]
	332	)
	333
	334	AS_IF([test "x$with_sdt" = "xyes"],[
	335	AC_MSG_CHECKING([STAP_PROBEV()])
	336	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
	337	#define SDT_USE_VARIADIC
	338	#include <sys/sdt.h>
	339	void fct(void)
	340	{
	341	STAP_PROBEV(provider,name,1,2,3,4,5,6,7,8,9,10);
	342	}
	343	]])],[
	344	AC_MSG_RESULT([yes])
	345	AC_DEFINE([LTTNG_UST_HAVE_SDT_INTEGRATION], [1])
	346	],[
	347	AC_MSG_RESULT([no])
	348	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])
	349	])
	350	])
	351
	352	AC_MSG_CHECKING([whether shared libraries are enabled])
	353	AS_IF([test "x$enable_shared" = "xyes"],
	354	[
	355	AC_MSG_RESULT([yes])
	356	],
	357	[
	358	AC_MSG_RESULT([no])
	359	AC_MSG_ERROR([LTTng-UST requires shared libraries to be enabled])
	360	])
	361
	362	AC_ARG_WITH([lttng-system-rundir],
	363	AS_HELP_STRING([--with-lttng-system-rundir],
	364	[Location of the system directory where LTTng-UST expects the system-wide lttng-sessiond runtime files. The default is "/var/run/lttng".]),
	365	[lttng_system_rundir="$withval"],
	366	[lttng_system_rundir="/var/run/lttng"])
	367	AC_DEFINE_UNQUOTED([LTTNG_SYSTEM_RUNDIR], ["$lttng_system_rundir"],
	368	[LTTng system runtime directory])
	369
	370	AC_CHECK_PROG([BUILD_GEN_TP_EXAMPLES],[python],["yes"])
	371	AM_CONDITIONAL([BUILD_GEN_TP_EXAMPLES], [test $BUILD_GEN_TP_EXAMPLES], [Build examples requiring lttng-gen-tp])
	372
	373	AC_CONFIG_FILES([
	374	Makefile
	375	doc/Makefile
	376	doc/examples/Makefile
	377	include/Makefile
	378	include/lttng/ust-version.h
	379	snprintf/Makefile
	380	libringbuffer/Makefile
	381	liblttng-ust-comm/Makefile
	382	liblttng-ust/Makefile
	383	liblttng-ust-ctl/Makefile
	384	liblttng-ust-fork/Makefile
	385	liblttng-ust-dl/Makefile
	386	liblttng-ust-java/Makefile
	387	liblttng-ust-java-agent/Makefile
	388	liblttng-ust-java-agent/java/Makefile
	389	liblttng-ust-java-agent/java/lttng-ust-agent-common/Makefile
	390	liblttng-ust-java-agent/java/lttng-ust-agent-jul/Makefile
	391	liblttng-ust-java-agent/java/lttng-ust-agent-log4j/Makefile
	392	liblttng-ust-java-agent/jni/Makefile
	393	liblttng-ust-java-agent/jni/common/Makefile
	394	liblttng-ust-java-agent/jni/jul/Makefile
	395	liblttng-ust-java-agent/jni/log4j/Makefile
	396	liblttng-ust-libc-wrapper/Makefile
	397	liblttng-ust-cyg-profile/Makefile
	398	liblttng-ust-python-agent/Makefile
	399	python-lttngust/Makefile
	400	python-lttngust/setup.py
	401	python-lttngust/lttngust/__init__.py
	402	tools/Makefile
	403	tests/Makefile
	404	tests/ctf-types/Makefile
	405	tests/hello/Makefile
	406	tests/hello.cxx/Makefile
	407	tests/same_line_tracepoint/Makefile
	408	tests/snprintf/Makefile
	409	tests/ust-elf/Makefile
	410	tests/benchmark/Makefile
	411	tests/utils/Makefile
	412	tests/test-app-ctx/Makefile
	413	lttng-ust.pc
	414	])
	415
	416	# Create link for python agent for the VPATH guru.
	417	AC_CONFIG_LINKS([
	418	python-lttngust/lttngust/agent.py:python-lttngust/lttngust/agent.py
	419	python-lttngust/lttngust/cmd.py:python-lttngust/lttngust/cmd.py
	420	python-lttngust/lttngust/debug.py:python-lttngust/lttngust/debug.py
	421	python-lttngust/lttngust/loghandler.py:python-lttngust/lttngust/loghandler.py
	422	])
	423
	424	AC_OUTPUT
	425
	426	AS_ECHO()
	427	AS_ECHO("Version name: $version_name")
	428	AS_ECHO("$version_description")
	429
	430	# Report on the configuration options
	431	AS_ECHO()
	432	AS_ECHO("LTTng-UST will be built with the following options:")
	433
	434	AS_ECHO()
	435
	436	AS_ECHO_N("Java agent (JUL support): ")
	437	AS_IF([test "x$java_agent_jul" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])
	438
	439	AS_ECHO_N("Java agent (Log4j support): ")
	440	AS_IF([test "x$java_agent_log4j" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])
	441
	442	AS_ECHO_N("JNI interface (JNI): ")
	443	AS_IF([test "x$jni_interface" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])
	444
	445	AS_ECHO_N("Python ($PYTHON) agent: ")
	446	AS_IF([test "x$python_agent" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])
	447
	448	AS_ECHO_N("sdt.h integration: ")
	449	AS_IF([test "x$with_sdt" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])
	450
	451	AS_ECHO("Architecture: $host_cpu")
	452	AS_ECHO_N("Efficient unaligned memory access: ")
	453	AS_IF([test "x$NO_UNALIGNED_ACCESS" != "x1"], [AS_ECHO("yes")], [AS_IF([test "x$UNSUPPORTED_ARCH" != "x1"], [AS_ECHO("no")], [AS_ECHO("unknown")])])
	454	AS_IF([test "x$UNSUPPORTED_ARCH" = "x1"], [AC_MSG_WARN([Your architecture ($host_cpu) is unsupported, using safe default of no unaligned access])])
	455	AS_ECHO()
	456
	457	AS_ECHO("Type 'make' to compile.")
	458