[lttng-ust.git] / configure.ac

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

AC_INIT([lttng-ust],[2.6.0-rc1],[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
# 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-rc1],[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], ["$version_description"], [UST version description])
	49
	50	AC_PROG_GREP
	51	# libtool link_all_deplibs fixup. See http://bugs.lttng.org/issues/321.
	52	AC_ARG_ENABLE(libtool-linkdep-fixup,
	53	AS_HELP_STRING([--disable-libtool-linkdep-fixup],
	54	[disable the libtool fixup for linking all dependent libraries (link_all_deplibs)]),
	55	libtool_fixup=$enableval,
	56	libtool_fixup=yes)
	57
	58	AS_IF([test "x$libtool_fixup" = "xyes"],
	59	[
	60	libtool_m4="$srcdir/config/libtool.m4"
	61	libtool_flag_pattern=".link_all_deplibs\s,\s\$1\s)"
	62	AC_MSG_CHECKING([for occurence(s) of link_all_deplibs = no in $libtool_m4])
	63	libtool_flag_pattern_count=$(grep -c "$libtool_flag_pattern\s=\sno" $libtool_m4)
	64	AS_IF([test $libtool_flag_pattern_count -ne 0],
	65	[
	66	AC_MSG_RESULT([$libtool_flag_pattern_count])
	67	AC_MSG_WARN([the detected libtool will not link all dependencies, forcing link_all_deplibs = unknown])
	68	sed -i "s/\($libtool_flag_pattern\)\s=\sno/\1=unknown/g" $libtool_m4
	69	],
	70	[
	71	AC_MSG_RESULT([none])
	72	])
	73	])
	74
	75	AM_CONDITIONAL([NO_SHARED], [test "x$enable_shared" = "xno"])
	76
	77	# Checks for programs.
	78	AC_PROG_CC
	79	AC_PROG_CXX
	80	AC_PROG_MAKE_SET
	81	LT_INIT
	82
	83	# rw_PROG_CXX_WORKS
	84	# Check whether the C++ compiler works.
	85	AC_CACHE_CHECK([whether the C++ compiler works],
	86	[rw_cv_prog_cxx_works],
	87	[AC_LANG_PUSH([C++])
	88	AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
	89	[check_cxx_designated_initializers=yes],
	90	[rw_cv_prog_cxx_works=no])
	91	if test "$check_cxx_designated_initializers" = "yes"; then
	92	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
	93	struct foo { int a; int b; };
	94	void fct(void)
	95	{
	96	struct foo f = { .a = 0, .b = 1 };
	97	}
	98	]])],[
	99	rw_cv_prog_cxx_works=yes
	100	],[
	101	rw_cv_prog_cxx_works=no
	102	])
	103	fi
	104	AC_LANG_POP([C++])])
	105
	106	AM_CONDITIONAL([CXX_WORKS], [test "x$rw_cv_prog_cxx_works" = "xyes"])
	107
	108	## Checks for libraries.
	109	AC_CHECK_LIB([dl], [dlopen],
	110	[
	111	have_libdl=yes
	112	],
	113	[
	114	#libdl not found, check for dlopen in libc.
	115	AC_CHECK_LIB([c], [dlopen],
	116	[
	117	have_libc_dl=yes
	118	],
	119	[
	120	AC_MSG_ERROR([Cannot find dlopen in libdl nor libc. Use [LDFLAGS]=-Ldir to specify their location.])
	121	])
	122	])
	123	AM_CONDITIONAL([LTTNG_UST_BUILD_WITH_LIBDL], [test "x$have_libdl" = "xyes"])
	124	AM_CONDITIONAL([LTTNG_UST_BUILD_WITH_LIBC_DL], [test "x$have_libc_dl" = "xyes"])
	125
	126	AC_CHECK_LIB([pthread], [pthread_create])
	127
	128	# Check for dlfcn.h
	129	AC_CHECK_HEADER([dlfcn.h])
	130	AS_IF([test "x${ac_cv_header_dlfcn_h}" = "xyes"],
	131	[AC_CHECK_DECLS([RTLD_DI_LINKMAP],,,
	132	[#define _GNU_SOURCE /* Required on Linux to get GNU extensions */
	133	#include <dlfcn.h>])
	134	],
	135	[ac_cv_have_decl_RTLD_DI_LINKMAP="no"])
	136	AM_CONDITIONAL([HAVE_DLINFO], [test "x${ac_cv_have_decl_RTLD_DI_LINKMAP}" = "xyes"])
	137
	138	# Checks for header files.
	139	#AC_CHECK_HEADERS([fcntl.h stdint.h stdlib.h string.h sys/socket.h sys/time.h unistd.h])
	140
	141	# Checks for typedefs, structures, and compiler characteristics.
	142	AC_C_INLINE
	143	#AC_TYPE_INT16_T
	144	#AC_TYPE_INT32_T
	145	#AC_TYPE_INT64_T
	146	#AC_TYPE_INT8_T
	147	#AC_TYPE_PID_T
	148	#AC_TYPE_SIZE_T
	149	#AC_TYPE_SSIZE_T
	150	#AC_TYPE_UINT16_T
	151	#AC_TYPE_UINT32_T
	152	#AC_TYPE_UINT64_T
	153	#AC_TYPE_UINT8_T
	154	#AC_CHECK_TYPES([ptrdiff_t])
	155
	156	# Checks for library functions.
	157	AC_FUNC_MALLOC
	158	AC_CHECK_FUNCS([gettimeofday munmap socket strerror strtol sched_getcpu sysconf])
	159
	160	CFLAGS="-Wall $CFLAGS"
	161
	162	# URCU
	163
	164	# urcu - check if we just find the headers it out of the box.
	165	AC_CHECK_HEADERS([urcu-bp.h], [], [AC_MSG_ERROR([Cannot find [URCU] headers (urcu-bp.h). Use [CPPFLAGS]=-Idir to specify their location.
	166	This error can also occur when the liburcu package's configure script has not been run.])])
	167
	168	# urcu-cds - check that URCU Concurrent Data Structure lib is available to compilation
	169	# Part of Userspace RCU library 0.7.2 or better.
	170	AC_CHECK_LIB([urcu-cds], [_cds_lfht_new], [], [AC_MSG_ERROR([Cannot find
	171	liburcu-cds lib, part of Userspace RCU 0.7 or better. Use [LDFLAGS]=-Ldir to specify its location.])])
	172
	173	AC_MSG_CHECKING([caa_likely()])
	174	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
	175	#include <urcu/compiler.h>
	176	void fct(void)
	177	{
	178	if (caa_likely(1)) {
	179	}
	180	}
	181	]])],[
	182	AC_MSG_RESULT([yes])
	183	],[
	184	AC_MSG_RESULT([no])
	185	AC_MSG_ERROR([Please upgrade your version of liburcu to 0.6.6 or better])
	186
	187	])
	188
	189	# urcu - check that URCU lib is available to compilation
	190	AC_CHECK_LIB([urcu-bp], [synchronize_rcu_bp], [], [AC_MSG_ERROR([Cannot find liburcu-bp lib. Use [LDFLAGS]=-Ldir to specify its location.])])
	191
	192	# urcu - check that URCU lib is at least version 0.6
	193	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.])])
	194
	195	# optional linux/perf_event.h
	196	AC_CHECK_HEADERS([linux/perf_event.h], [have_perf_event=yes], [])
	197
	198	# Perf event counters are only supported on x86 so far.
	199	AC_MSG_CHECKING([UST support for architecture perf event counters])
	200	case $host_cpu in
	201	changequote(,)dnl
	202	i[3456]86)
	203	changequote([,])dnl
	204	UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS=yes;;
	205	x86_64) UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS=yes;;
	206	amd64) UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS=yes;;
	207	*) UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS=no;;
	208	esac
	209	AC_MSG_RESULT([$UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS])
	210
	211	AM_CONDITIONAL([HAVE_PERF_EVENT], [test "x$have_perf_event" = "xyes" -a "x$UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS" = "xyes"])
	212
	213	if test "x$have_perf_event" = "xyes" -a "x$UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS" = "xyes"; then
	214	AC_DEFINE([LTTNG_UST_HAVE_PERF_EVENT], [1])
	215	fi
	216
	217	AC_MSG_CHECKING([host system alignment requirements])
	218	case $host_cpu in
	219	changequote(,)dnl
	220	i[3456]86)
	221	changequote([,])dnl
	222	;;
	223	x86_64) ;;
	224	amd64) ;;
	225	powerpc) ;;
	226	ppc64) ;;
	227	ppc64le) ;;
	228	powerpc64) ;;
	229	powerpc64le) ;;
	230	s390) NO_UNALIGNED_ACCESS=1 ;;
	231	s390x) NO_UNALIGNED_ACCESS=1 ;;
	232	arm*) NO_UNALIGNED_ACCESS=1 ;;
	233	mips*) NO_UNALIGNED_ACCESS=1 ;;
	234	tile*) NO_UNALIGNED_ACCESS=1 ;;
	235	*) AC_MSG_ERROR([unable to detect alignment requirements (unsupported architecture ($host_cpu)?)]) ;;
	236	esac
	237	AC_MSG_RESULT([$host_cpu])
	238
	239	if test x$NO_UNALIGNED_ACCESS = x ; then
	240	AC_DEFINE([LTTNG_UST_HAVE_EFFICIENT_UNALIGNED_ACCESS], [1])
	241	fi
	242
	243	# Check for JNI header files if requested
	244	AC_ARG_ENABLE([jni-interface],
	245	[AS_HELP_STRING([--enable-jni-interface],[build JNI interface between C and Java. Needs Java include files [default=no]])],
	246	[jni_interface=$withval],
	247	[jni_interface=no]
	248	)
	249
	250	AM_CONDITIONAL([BUILD_JNI_INTERFACE], [test "x$jni_interface" = "xyes"])
	251
	252
	253	AC_ARG_ENABLE([java-agent-jul],
	254	[AS_HELP_STRING([--enable-java-agent-jul],[build the LTTng UST Java agent with JUL support [default=no]])],
	255	[java_agent_jul=$enableval],
	256	[java_agent_jul=no]
	257	)
	258
	259	AC_ARG_ENABLE([java-agent-log4j],
	260	[AS_HELP_STRING([--enable-java-agent-log4j],[build the LTTng UST Java agent with Log4j support [default=no]])],
	261	[java_agent_log4j=$enableval],
	262	[java_agent_log4j=no]
	263	)
	264
	265	AC_ARG_ENABLE([java-agent-all],
	266	[AS_HELP_STRING([--enable-java-agent-all],[build the LTTng UST Java agent with all supported backends [default=no]])],
	267	[java_agent_jul=$enableval
	268	java_agent_log4j=$enableval],
	269	[:]
	270	)
	271
	272
	273	AM_CONDITIONAL([BUILD_JAVA_AGENT], [test "x$java_agent_jul" = "xyes" \|\| test "x$java_agent_log4j" = "xyes"])
	274	AM_CONDITIONAL([BUILD_JAVA_AGENT_WITH_JUL], [test "x$java_agent_jul" = "xyes"])
	275	AM_CONDITIONAL([BUILD_JAVA_AGENT_WITH_LOG4J], [test "x$java_agent_log4j" = "xyes"])
	276
	277	if test "x$jni_interface" = "xyes" \|\| test "x$java_agent_jul" = "xyes" \|\| test "x$java_agent_log4j" = "xyes"; then
	278	AX_JAVA_OPTIONS
	279	AX_PROG_JAVAC
	280	AX_PROG_JAVA
	281	AX_PROG_JAR
	282
	283	AX_JNI_INCLUDE_DIR
	284	for JNI_INCLUDE_DIR in $JNI_INCLUDE_DIRS
	285	do
	286	CPPFLAGS="$CPPFLAGS -I$JNI_INCLUDE_DIR"
	287	done
	288
	289	AX_PROG_JAVAH
	290	fi
	291
	292	if test "x$java_agent_log4j" = "xyes"; then
	293	AX_CHECK_CLASSPATH
	294
	295	AX_CHECK_CLASS(org.apache.log4j.Logger)
	296
	297	if test "x$ac_cv_class_org_apache_log4j_Logger" = "xno"; then
	298	AC_MSG_ERROR([The UST Java agent support for log4j was requested but the Log4j classes were not found. Please specify the location of the Log4j jar via the Java CLASSPATH e.g: export CLASSPATH="/path/to/log4j.jar"])
	299	fi
	300	fi
	301
	302	# sdt.h integration
	303	AC_ARG_WITH([sdt],
	304	[AS_HELP_STRING([--with-sdt],[provide SystemTap integration via sdt.h [default=no]])],
	305	[with_sdt=$withval],
	306	[with_sdt="no"]
	307	)
	308
	309	AS_IF([test "x$with_sdt" = "xyes"],[
	310	AC_MSG_CHECKING([STAP_PROBEV()])
	311	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
	312	#define SDT_USE_VARIADIC
	313	#include <sys/sdt.h>
	314	void fct(void)
	315	{
	316	STAP_PROBEV(provider,name,1,2,3,4,5,6,7,8,9,10);
	317	}
	318	]])],[
	319	AC_MSG_RESULT([yes])
	320	AC_DEFINE([LTTNG_UST_HAVE_SDT_INTEGRATION], [1])
	321	],[
	322	AC_MSG_RESULT([no])
	323	AC_MSG_ERROR([The sdt.h integration was requested but the STAP_PROBEV define cannot be used. Make sure it is installed, and up to date, or use CPPFLAGS=-I/path/ to specify a non-standard path to sys/sdt.h])
	324	])
	325	])
	326
	327	AC_MSG_CHECKING([whether shared libraries are enabled])
	328	AS_IF([test "x$enable_shared" = "xyes"],
	329	[
	330	AC_MSG_RESULT([yes])
	331	],
	332	[
	333	AC_MSG_RESULT([no])
	334	AC_MSG_ERROR([LTTng-UST requires shared libraries to be enabled])
	335	])
	336
	337	AC_ARG_WITH([lttng-system-rundir],
	338	AS_HELP_STRING([--with-lttng-system-rundir],
	339	[Location of the system directory where LTTng-UST expects the system-wide lttng-sessiond runtime files. The default is "/var/run/lttng".]),
	340	[lttng_system_rundir="$withval"],
	341	[lttng_system_rundir="/var/run/lttng"])
	342	AC_DEFINE_UNQUOTED([LTTNG_SYSTEM_RUNDIR], ["$lttng_system_rundir"],
	343	[LTTng system runtime directory])
	344
	345	AM_PATH_PYTHON([2.7],BUILD_GEN_TP_EXAMPLES=1,[:])
	346	AM_CONDITIONAL([BUILD_GEN_TP_EXAMPLES], [test $BUILD_GEN_TP_EXAMPLES], [Build examples requiring lttng-gen-tp])
	347
	348	AC_CONFIG_FILES([
	349	Makefile
	350	doc/Makefile
	351	doc/examples/Makefile
	352	include/Makefile
	353	include/lttng/ust-version.h
	354	snprintf/Makefile
	355	libringbuffer/Makefile
	356	liblttng-ust-comm/Makefile
	357	liblttng-ust/Makefile
	358	liblttng-ust-ctl/Makefile
	359	liblttng-ust-fork/Makefile
	360	liblttng-ust-dl/Makefile
	361	liblttng-ust-java/Makefile
	362	liblttng-ust-java-agent/Makefile
	363	liblttng-ust-java-agent/java/Makefile
	364	liblttng-ust-java-agent/jni/Makefile
	365	liblttng-ust-java-agent/jni/jul/Makefile
	366	liblttng-ust-java-agent/jni/log4j/Makefile
	367	liblttng-ust-libc-wrapper/Makefile
	368	liblttng-ust-cyg-profile/Makefile
	369	tools/Makefile
	370	tests/Makefile
	371	tests/hello/Makefile
	372	tests/hello.cxx/Makefile
	373	tests/same_line_tracepoint/Makefile
	374	tests/snprintf/Makefile
	375	tests/benchmark/Makefile
	376	tests/utils/Makefile
	377	lttng-ust.pc
	378	])
	379
	380	AC_OUTPUT
	381
	382	AS_ECHO()
	383	AS_ECHO("Version name: $version_name")
	384	AS_ECHO("$version_description")
	385
	386	# Report on the configuration options
	387	AS_ECHO()
	388	AS_ECHO("LTTng-UST will be built with the following options:")
	389
	390	AS_ECHO()
	391
	392	AS_ECHO_N("Java agent (JUL support): ")
	393	AS_IF([test "x$java_agent_jul" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])
	394
	395	AS_ECHO_N("Java agent (Log4j support): ")
	396	AS_IF([test "x$java_agent_log4j" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])
	397
	398	AS_ECHO_N("JNI interface (JNI): ")
	399	AS_IF([test "x$jni_interface" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])
	400
	401	AS_ECHO_N("sdt.h integration: ")
	402	AS_IF([test "x$with_sdt" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])
	403
	404	AS_ECHO()
	405	AS_ECHO("Type 'make' to compile.")
	406