[lttng-ust.git] / configure.ac

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

AC_INIT([lttng-ust],[2.6.0-rc2],[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([foreign dist-bzip2 no-dist-gzip])
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])

# Compute minor/major/patchlevel version numbers
AC_PROG_SED
major_version=$(echo AC_PACKAGE_VERSION | sed 's/^\([[0-9]]\)*\.[[0-9]]*\.[[0-9]]*.*$/\1/')
minor_version=$(echo AC_PACKAGE_VERSION | sed 's/^[[0-9]]*\.\([[0-9]]*\)\.[[0-9]]*.*$/\1/')
patchlevel_version=$(echo AC_PACKAGE_VERSION | sed 's/^[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\).*$/\1/')
AC_SUBST([MAJOR_VERSION], [$major_version])
AC_SUBST([MINOR_VERSION], [$minor_version])
AC_SUBST([PATCHLEVEL_VERSION], [$patchlevel_version])
AC_DEFINE_UNQUOTED([VERSION_MAJOR], $major_version, [UST major version number])
AC_DEFINE_UNQUOTED([VERSION_MINOR], $minor_version, [UST minor version number])
AC_DEFINE_UNQUOTED([VERSION_PATCHLEVEL], $patchlevel_version, [UST patchlevel version number])

version_name="Gaia"
version_description="From Benelux brewery in Montreal, the Gaia is a witbier with a cloudy light amber ale color. Aroma of coriander with floral hay notes is enchanting. Taste is also dominated by the very floral coriander note and some medium sweet malt notes."

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

## 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 $host_cpu in
changequote(,)dnl
	i[3456]86)
changequote([,])dnl
	  ;;
	x86_64) ;;
	amd64) ;;
	powerpc) ;;
	ppc64) ;;
	ppc64le) ;;
	powerpc64) ;;
	powerpc64le) ;;
	s390) NO_UNALIGNED_ACCESS=1 ;;
	s390x) NO_UNALIGNED_ACCESS=1 ;;
        arm*) NO_UNALIGNED_ACCESS=1 ;;
	mips*) NO_UNALIGNED_ACCESS=1 ;;
	tile*) NO_UNALIGNED_ACCESS=1 ;;
	*) AC_MSG_ERROR([unable to detect alignment requirements (unsupported architecture ($host_cpu)?)]) ;;
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=$withval],
	[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

# 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])

AM_PATH_PYTHON([2.7],BUILD_GEN_TP_EXAMPLES=1,[:])
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/jni/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
	tools/Makefile
	tests/Makefile
	tests/hello/Makefile
	tests/hello.cxx/Makefile
	tests/same_line_tracepoint/Makefile
	tests/snprintf/Makefile
	tests/benchmark/Makefile
	tests/utils/Makefile
	lttng-ust.pc
])

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

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	AC_INIT([lttng-ust],[2.6.0-rc2],[mathieu dot desnoyers at efficios dot com])
	5
	6	# Following the numbering scheme proposed by libtool for the library version
	7	# http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
	8	# This is the library version of liblttng-ust.
	9	AC_SUBST([LTTNG_UST_LIBRARY_VERSION], [0:0:0])
	10	# note: remember to update tracepoint.h dlopen() to match this version
	11	# number. TODO: eventually automate by exporting the major number.
	12
	13	# This is the library version of liblttng-ust-ctl, used internally by
	14	# liblttng-ust, lttng-sessiond, and lttng-consumerd.
	15	AC_SUBST([LTTNG_UST_CTL_LIBRARY_VERSION], [2:0:0])
	16
	17	AC_CONFIG_AUX_DIR([config])
	18	AC_CANONICAL_TARGET
	19	AC_CANONICAL_HOST
	20	AC_CONFIG_MACRO_DIR([config])
	21	AM_INIT_AUTOMAKE([foreign dist-bzip2 no-dist-gzip])
	22	AM_MAINTAINER_MODE([enable])
	23	m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
	24	AC_CONFIG_SRCDIR([include/lttng/tracepoint.h])
	25
	26	# Configuration options, which will be installed in the config.h
	27	AC_CONFIG_HEADERS([config.h include/lttng/ust-config.h])
	28	AH_TEMPLATE([LTTNG_UST_HAVE_EFFICIENT_UNALIGNED_ACCESS], [Use efficient unaligned access.])
	29	AH_TEMPLATE([LTTNG_UST_HAVE_SDT_INTEGRATION], [SystemTap integration via sdt.h])
	30	AH_TEMPLATE([LTTNG_UST_HAVE_PERF_EVENT], [Perf event integration via perf_event.h])
	31
	32	# Compute minor/major/patchlevel version numbers
	33	AC_PROG_SED
	34	major_version=$(echo AC_PACKAGE_VERSION \| sed 's/^\([[0-9]]\)\.[[0-9]]\.[[0-9]].$/\1/')
	35	minor_version=$(echo AC_PACKAGE_VERSION \| sed 's/^[[0-9]]\.\([[0-9]]\)\.[[0-9]].$/\1/')
	36	patchlevel_version=$(echo AC_PACKAGE_VERSION \| sed 's/^[[0-9]]\.[[0-9]]\.\([[0-9]]\).$/\1/')
	37	AC_SUBST([MAJOR_VERSION], [$major_version])
	38	AC_SUBST([MINOR_VERSION], [$minor_version])
	39	AC_SUBST([PATCHLEVEL_VERSION], [$patchlevel_version])
	40	AC_DEFINE_UNQUOTED([VERSION_MAJOR], $major_version, [UST major version number])
	41	AC_DEFINE_UNQUOTED([VERSION_MINOR], $minor_version, [UST minor version number])
	42	AC_DEFINE_UNQUOTED([VERSION_PATCHLEVEL], $patchlevel_version, [UST patchlevel version number])
	43
	44	version_name="Gaia"
	45	version_description="From Benelux brewery in Montreal, the Gaia is a witbier with a cloudy light amber ale color. Aroma of coriander with floral hay notes is enchanting. Taste is also dominated by the very floral coriander note and some medium sweet malt notes."
	46
	47	AC_DEFINE_UNQUOTED([VERSION_NAME], ["$version_name"], [UST version name])
	48	AC_DEFINE_UNQUOTED([VERSION_DESCRIPTION], ["$version_description"], [UST version description])
	49
	50	AC_PROG_GREP
	51	AC_PROG_LN_S
	52	# libtool link_all_deplibs fixup. See http://bugs.lttng.org/issues/321.
	53	AC_ARG_ENABLE(libtool-linkdep-fixup,
	54	AS_HELP_STRING([--disable-libtool-linkdep-fixup],
	55	[disable the libtool fixup for linking all dependent libraries (link_all_deplibs)]),
	56	libtool_fixup=$enableval,
	57	libtool_fixup=yes)
	58
	59	AS_IF([test "x$libtool_fixup" = "xyes"],
	60	[
	61	libtool_m4="$srcdir/config/libtool.m4"
	62	libtool_flag_pattern=".link_all_deplibs\s,\s\$1\s)"
	63	AC_MSG_CHECKING([for occurence(s) of link_all_deplibs = no in $libtool_m4])
	64	libtool_flag_pattern_count=$(grep -c "$libtool_flag_pattern\s=\sno" $libtool_m4)
	65	AS_IF([test $libtool_flag_pattern_count -ne 0],
	66	[
	67	AC_MSG_RESULT([$libtool_flag_pattern_count])
	68	AC_MSG_WARN([the detected libtool will not link all dependencies, forcing link_all_deplibs = unknown])
	69	sed -i "s/\($libtool_flag_pattern\)\s=\sno/\1=unknown/g" $libtool_m4
	70	],
	71	[
	72	AC_MSG_RESULT([none])
	73	])
	74	])
	75
	76	AM_CONDITIONAL([NO_SHARED], [test "x$enable_shared" = "xno"])
	77
	78	# Checks for programs.
	79	AC_PROG_CC
	80	AC_PROG_CXX
	81	AC_PROG_MAKE_SET
	82	LT_INIT
	83
	84	# rw_PROG_CXX_WORKS
	85	# Check whether the C++ compiler works.
	86	AC_CACHE_CHECK([whether the C++ compiler works],
	87	[rw_cv_prog_cxx_works],
	88	[AC_LANG_PUSH([C++])
	89	AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
	90	[check_cxx_designated_initializers=yes],
	91	[rw_cv_prog_cxx_works=no])
	92	if test "$check_cxx_designated_initializers" = "yes"; then
	93	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
	94	struct foo { int a; int b; };
	95	void fct(void)
	96	{
	97	struct foo f = { .a = 0, .b = 1 };
	98	}
	99	]])],[
	100	rw_cv_prog_cxx_works=yes
	101	],[
	102	rw_cv_prog_cxx_works=no
	103	])
	104	fi
	105	AC_LANG_POP([C++])])
	106
	107	AM_CONDITIONAL([CXX_WORKS], [test "x$rw_cv_prog_cxx_works" = "xyes"])
	108
	109	## Checks for libraries.
	110	AC_CHECK_LIB([dl], [dlopen],
	111	[
	112	have_libdl=yes
	113	],
	114	[
	115	#libdl not found, check for dlopen in libc.
	116	AC_CHECK_LIB([c], [dlopen],
	117	[
	118	have_libc_dl=yes
	119	],
	120	[
	121	AC_MSG_ERROR([Cannot find dlopen in libdl nor libc. Use [LDFLAGS]=-Ldir to specify their location.])
	122	])
	123	])
	124	AM_CONDITIONAL([LTTNG_UST_BUILD_WITH_LIBDL], [test "x$have_libdl" = "xyes"])
	125	AM_CONDITIONAL([LTTNG_UST_BUILD_WITH_LIBC_DL], [test "x$have_libc_dl" = "xyes"])
	126
	127	AC_CHECK_LIB([pthread], [pthread_create])
	128
	129	# Check for dlfcn.h
	130	AC_CHECK_HEADER([dlfcn.h])
	131	AS_IF([test "x${ac_cv_header_dlfcn_h}" = "xyes"],
	132	[AC_CHECK_DECLS([RTLD_DI_LINKMAP],,,
	133	[#define _GNU_SOURCE /* Required on Linux to get GNU extensions */
	134	#include <dlfcn.h>])
	135	],
	136	[ac_cv_have_decl_RTLD_DI_LINKMAP="no"])
	137	AM_CONDITIONAL([HAVE_DLINFO], [test "x${ac_cv_have_decl_RTLD_DI_LINKMAP}" = "xyes"])
	138
	139	# Checks for header files.
	140	#AC_CHECK_HEADERS([fcntl.h stdint.h stdlib.h string.h sys/socket.h sys/time.h unistd.h])
	141
	142	# Checks for typedefs, structures, and compiler characteristics.
	143	AC_C_INLINE
	144	#AC_TYPE_INT16_T
	145	#AC_TYPE_INT32_T
	146	#AC_TYPE_INT64_T
	147	#AC_TYPE_INT8_T
	148	#AC_TYPE_PID_T
	149	#AC_TYPE_SIZE_T
	150	#AC_TYPE_SSIZE_T
	151	#AC_TYPE_UINT16_T
	152	#AC_TYPE_UINT32_T
	153	#AC_TYPE_UINT64_T
	154	#AC_TYPE_UINT8_T
	155	#AC_CHECK_TYPES([ptrdiff_t])
	156
	157	# Checks for library functions.
	158	AC_FUNC_MALLOC
	159	AC_CHECK_FUNCS([gettimeofday munmap socket strerror strtol sched_getcpu sysconf])
	160
	161	CFLAGS="-Wall $CFLAGS"
	162
	163	# URCU
	164
	165	# urcu - check if we just find the headers it out of the box.
	166	AC_CHECK_HEADERS([urcu-bp.h], [], [AC_MSG_ERROR([Cannot find [URCU] headers (urcu-bp.h). Use [CPPFLAGS]=-Idir to specify their location.
	167	This error can also occur when the liburcu package's configure script has not been run.])])
	168
	169	# urcu-cds - check that URCU Concurrent Data Structure lib is available to compilation
	170	# Part of Userspace RCU library 0.7.2 or better.
	171	AC_CHECK_LIB([urcu-cds], [_cds_lfht_new], [], [AC_MSG_ERROR([Cannot find
	172	liburcu-cds lib, part of Userspace RCU 0.7 or better. Use [LDFLAGS]=-Ldir to specify its location.])])
	173
	174	AC_MSG_CHECKING([caa_likely()])
	175	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
	176	#include <urcu/compiler.h>
	177	void fct(void)
	178	{
	179	if (caa_likely(1)) {
	180	}
	181	}
	182	]])],[
	183	AC_MSG_RESULT([yes])
	184	],[
	185	AC_MSG_RESULT([no])
	186	AC_MSG_ERROR([Please upgrade your version of liburcu to 0.6.6 or better])
	187
	188	])
	189
	190	# urcu - check that URCU lib is available to compilation
	191	AC_CHECK_LIB([urcu-bp], [synchronize_rcu_bp], [], [AC_MSG_ERROR([Cannot find liburcu-bp lib. Use [LDFLAGS]=-Ldir to specify its location.])])
	192
	193	# urcu - check that URCU lib is at least version 0.6
	194	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.])])
	195
	196	# optional linux/perf_event.h
	197	AC_CHECK_HEADERS([linux/perf_event.h], [have_perf_event=yes], [])
	198
	199	# Perf event counters are only supported on x86 so far.
	200	AC_MSG_CHECKING([UST support for architecture perf event counters])
	201	case $host_cpu in
	202	changequote(,)dnl
	203	i[3456]86)
	204	changequote([,])dnl
	205	UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS=yes;;
	206	x86_64) UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS=yes;;
	207	amd64) UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS=yes;;
	208	*) UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS=no;;
	209	esac
	210	AC_MSG_RESULT([$UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS])
	211
	212	AM_CONDITIONAL([HAVE_PERF_EVENT], [test "x$have_perf_event" = "xyes" -a "x$UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS" = "xyes"])
	213
	214	if test "x$have_perf_event" = "xyes" -a "x$UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS" = "xyes"; then
	215	AC_DEFINE([LTTNG_UST_HAVE_PERF_EVENT], [1])
	216	fi
	217
	218	AC_MSG_CHECKING([host system alignment requirements])
	219	case $host_cpu in
	220	changequote(,)dnl
	221	i[3456]86)
	222	changequote([,])dnl
	223	;;
	224	x86_64) ;;
	225	amd64) ;;
	226	powerpc) ;;
	227	ppc64) ;;
	228	ppc64le) ;;
	229	powerpc64) ;;
	230	powerpc64le) ;;
	231	s390) NO_UNALIGNED_ACCESS=1 ;;
	232	s390x) NO_UNALIGNED_ACCESS=1 ;;
	233	arm*) NO_UNALIGNED_ACCESS=1 ;;
	234	mips*) NO_UNALIGNED_ACCESS=1 ;;
	235	tile*) NO_UNALIGNED_ACCESS=1 ;;
	236	*) AC_MSG_ERROR([unable to detect alignment requirements (unsupported architecture ($host_cpu)?)]) ;;
	237	esac
	238	AC_MSG_RESULT([$host_cpu])
	239
	240	if test x$NO_UNALIGNED_ACCESS = x ; then
	241	AC_DEFINE([LTTNG_UST_HAVE_EFFICIENT_UNALIGNED_ACCESS], [1])
	242	fi
	243
	244	# Check for JNI header files if requested
	245	AC_ARG_ENABLE([jni-interface],
	246	[AS_HELP_STRING([--enable-jni-interface],[build JNI interface between C and Java. Needs Java include files [default=no]])],
	247	[jni_interface=$withval],
	248	[jni_interface=no]
	249	)
	250
	251	AM_CONDITIONAL([BUILD_JNI_INTERFACE], [test "x$jni_interface" = "xyes"])
	252
	253
	254	AC_ARG_ENABLE([java-agent-jul],
	255	[AS_HELP_STRING([--enable-java-agent-jul],[build the LTTng UST Java agent with JUL support [default=no]])],
	256	[java_agent_jul=$enableval],
	257	[java_agent_jul=no]
	258	)
	259
	260	AC_ARG_ENABLE([java-agent-log4j],
	261	[AS_HELP_STRING([--enable-java-agent-log4j],[build the LTTng UST Java agent with Log4j support [default=no]])],
	262	[java_agent_log4j=$enableval],
	263	[java_agent_log4j=no]
	264	)
	265
	266	AC_ARG_ENABLE([java-agent-all],
	267	[AS_HELP_STRING([--enable-java-agent-all],[build the LTTng UST Java agent with all supported backends [default=no]])],
	268	[java_agent_jul=$enableval
	269	java_agent_log4j=$enableval],
	270	[:]
	271	)
	272
	273
	274	AM_CONDITIONAL([BUILD_JAVA_AGENT], [test "x$java_agent_jul" = "xyes" \|\| test "x$java_agent_log4j" = "xyes"])
	275	AM_CONDITIONAL([BUILD_JAVA_AGENT_WITH_JUL], [test "x$java_agent_jul" = "xyes"])
	276	AM_CONDITIONAL([BUILD_JAVA_AGENT_WITH_LOG4J], [test "x$java_agent_log4j" = "xyes"])
	277
	278	if test "x$jni_interface" = "xyes" \|\| test "x$java_agent_jul" = "xyes" \|\| test "x$java_agent_log4j" = "xyes"; then
	279	AX_JAVA_OPTIONS
	280	AX_PROG_JAVAC
	281	AX_PROG_JAVA
	282	AX_PROG_JAR
	283
	284	AX_JNI_INCLUDE_DIR
	285	for JNI_INCLUDE_DIR in $JNI_INCLUDE_DIRS
	286	do
	287	CPPFLAGS="$CPPFLAGS -I$JNI_INCLUDE_DIR"
	288	done
	289
	290	AX_PROG_JAVAH
	291	fi
	292
	293	if test "x$java_agent_log4j" = "xyes"; then
	294	AX_CHECK_CLASSPATH
	295
	296	AX_CHECK_CLASS(org.apache.log4j.Logger)
	297
	298	if test "x$ac_cv_class_org_apache_log4j_Logger" = "xno"; then
	299	AC_MSG_ERROR([The UST Java agent support for log4j was requested but the Log4j classes were not found. Please specify the location of the Log4j jar via the Java CLASSPATH e.g: export CLASSPATH="/path/to/log4j.jar"])
	300	fi
	301	fi
	302
	303	# sdt.h integration
	304	AC_ARG_WITH([sdt],
	305	[AS_HELP_STRING([--with-sdt],[provide SystemTap integration via sdt.h [default=no]])],
	306	[with_sdt=$withval],
	307	[with_sdt="no"]
	308	)
	309
	310	AS_IF([test "x$with_sdt" = "xyes"],[
	311	AC_MSG_CHECKING([STAP_PROBEV()])
	312	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
	313	#define SDT_USE_VARIADIC
	314	#include <sys/sdt.h>
	315	void fct(void)
	316	{
	317	STAP_PROBEV(provider,name,1,2,3,4,5,6,7,8,9,10);
	318	}
	319	]])],[
	320	AC_MSG_RESULT([yes])
	321	AC_DEFINE([LTTNG_UST_HAVE_SDT_INTEGRATION], [1])
	322	],[
	323	AC_MSG_RESULT([no])
	324	AC_MSG_ERROR([The sdt.h integration was requested but the STAP_PROBEV define cannot be used. Make sure it is installed, and up to date, or use CPPFLAGS=-I/path/ to specify a non-standard path to sys/sdt.h])
	325	])
	326	])
	327
	328	AC_MSG_CHECKING([whether shared libraries are enabled])
	329	AS_IF([test "x$enable_shared" = "xyes"],
	330	[
	331	AC_MSG_RESULT([yes])
	332	],
	333	[
	334	AC_MSG_RESULT([no])
	335	AC_MSG_ERROR([LTTng-UST requires shared libraries to be enabled])
	336	])
	337
	338	AC_ARG_WITH([lttng-system-rundir],
	339	AS_HELP_STRING([--with-lttng-system-rundir],
	340	[Location of the system directory where LTTng-UST expects the system-wide lttng-sessiond runtime files. The default is "/var/run/lttng".]),
	341	[lttng_system_rundir="$withval"],
	342	[lttng_system_rundir="/var/run/lttng"])
	343	AC_DEFINE_UNQUOTED([LTTNG_SYSTEM_RUNDIR], ["$lttng_system_rundir"],
	344	[LTTng system runtime directory])
	345
	346	AM_PATH_PYTHON([2.7],BUILD_GEN_TP_EXAMPLES=1,[:])
	347	AM_CONDITIONAL([BUILD_GEN_TP_EXAMPLES], [test $BUILD_GEN_TP_EXAMPLES], [Build examples requiring lttng-gen-tp])
	348
	349	AC_CONFIG_FILES([
	350	Makefile
	351	doc/Makefile
	352	doc/examples/Makefile
	353	include/Makefile
	354	include/lttng/ust-version.h
	355	snprintf/Makefile
	356	libringbuffer/Makefile
	357	liblttng-ust-comm/Makefile
	358	liblttng-ust/Makefile
	359	liblttng-ust-ctl/Makefile
	360	liblttng-ust-fork/Makefile
	361	liblttng-ust-dl/Makefile
	362	liblttng-ust-java/Makefile
	363	liblttng-ust-java-agent/Makefile
	364	liblttng-ust-java-agent/java/Makefile
	365	liblttng-ust-java-agent/jni/Makefile
	366	liblttng-ust-java-agent/jni/jul/Makefile
	367	liblttng-ust-java-agent/jni/log4j/Makefile
	368	liblttng-ust-libc-wrapper/Makefile
	369	liblttng-ust-cyg-profile/Makefile
	370	tools/Makefile
	371	tests/Makefile
	372	tests/hello/Makefile
	373	tests/hello.cxx/Makefile
	374	tests/same_line_tracepoint/Makefile
	375	tests/snprintf/Makefile
	376	tests/benchmark/Makefile
	377	tests/utils/Makefile
	378	lttng-ust.pc
	379	])
	380
	381	AC_OUTPUT
	382
	383	AS_ECHO()
	384	AS_ECHO("Version name: $version_name")
	385	AS_ECHO("$version_description")
	386
	387	# Report on the configuration options
	388	AS_ECHO()
	389	AS_ECHO("LTTng-UST will be built with the following options:")
	390
	391	AS_ECHO()
	392
	393	AS_ECHO_N("Java agent (JUL support): ")
	394	AS_IF([test "x$java_agent_jul" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])
	395
	396	AS_ECHO_N("Java agent (Log4j support): ")
	397	AS_IF([test "x$java_agent_log4j" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])
	398
	399	AS_ECHO_N("JNI interface (JNI): ")
	400	AS_IF([test "x$jni_interface" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])
	401
	402	AS_ECHO_N("sdt.h integration: ")
	403	AS_IF([test "x$with_sdt" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])
	404
	405	AS_ECHO()
	406	AS_ECHO("Type 'make' to compile.")
	407