[lttng-ust.git] / configure.ac

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

AC_INIT([lttng-ust],[2.4.0],[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])
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])

# 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="Époque Opaque"
version_description="The Époque Opaque is a black IPA from Trou du Diable brewery. The nose is eerily reminiscent of the coffee crisp candy from of our childhood. These strong mocha accents are present on the palate, which are quickly subdued by Japanese and Australian hops leading to a final state of satisfaction enjoyable for any fan of bitter beer."

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])

# 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.])])

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

# Set compile flags to java include files if given
AC_ARG_WITH([java-jdk],
	[AS_HELP_STRING([--with-java-jdk=DIR],[use the Java JDK in DIR. Ex : $JAVA_HOME.])],
	[JAVA_JDK=$withval],
	[JAVA_JDK=""]
)
AM_CONDITIONAL([HAVE_JAVA_JDK], [test $JAVA_JDK], [Java JDK path])
AC_SUBST([JAVA_JDK])

AS_IF([test $JAVA_JDK],[
	AS_IF([test -d $JAVA_JDK],[
                AC_MSG_RESULT([using Java includes in $JAVA_SDK])
                SUBDIRS=`find $JAVA_JDK/include -type d`
		CPPFLAGS+=" "
                CPPFLAGS+=`for x in $SUBDIRS; do echo -n "-I$x "; done`
		CPPFLAGS+=" "
        ],[
                AC_MSG_ERROR(Unable to find Java include files in $JAVA_JDK)
        ])
])

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

AS_IF([test "x$jni_interface" = "xyes"],[
        AC_CHECK_HEADERS([jni.h],[],[
        AC_MSG_ERROR([missing jni.h
Make sure Sun Java, OpenJDK or GCJ is installed and that this header file exists in the system path.
Use the --with-java-jdk=DIR flag to point to your Java include files, or disable the JNI interface.])
	])
])
AM_CONDITIONAL([BUILD_JNI_INTERFACE], [test "x$jni_interface" = "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_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])

lttnglibjavadir="${libdir}/lttng/java"
AC_SUBST(lttnglibjavadir)

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-jul/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
	tests/java-jul/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 support (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],[2.4.0],[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	m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
	23	AC_CONFIG_SRCDIR([include/lttng/tracepoint.h])
	24
	25	# Configuration options, which will be installed in the config.h
	26	AC_CONFIG_HEADERS([config.h include/lttng/ust-config.h])
	27	AH_TEMPLATE([LTTNG_UST_HAVE_EFFICIENT_UNALIGNED_ACCESS], [Use efficient unaligned access.])
	28	AH_TEMPLATE([LTTNG_UST_HAVE_SDT_INTEGRATION], [SystemTap integration via sdt.h])
	29
	30	# Compute minor/major/patchlevel version numbers
	31	AC_PROG_SED
	32	major_version=$(echo AC_PACKAGE_VERSION \| sed 's/^\([[0-9]]\)\.[[0-9]]\.[[0-9]].$/\1/')
	33	minor_version=$(echo AC_PACKAGE_VERSION \| sed 's/^[[0-9]]\.\([[0-9]]\)\.[[0-9]].$/\1/')
	34	patchlevel_version=$(echo AC_PACKAGE_VERSION \| sed 's/^[[0-9]]\.[[0-9]]\.\([[0-9]]\).$/\1/')
	35	AC_SUBST([MAJOR_VERSION], [$major_version])
	36	AC_SUBST([MINOR_VERSION], [$minor_version])
	37	AC_SUBST([PATCHLEVEL_VERSION], [$patchlevel_version])
	38	AC_DEFINE_UNQUOTED([VERSION_MAJOR], $major_version, [UST major version number])
	39	AC_DEFINE_UNQUOTED([VERSION_MINOR], $minor_version, [UST minor version number])
	40	AC_DEFINE_UNQUOTED([VERSION_PATCHLEVEL], $patchlevel_version, [UST patchlevel version number])
	41
	42	version_name="Époque Opaque"
	43	version_description="The Époque Opaque is a black IPA from Trou du Diable brewery. The nose is eerily reminiscent of the coffee crisp candy from of our childhood. These strong mocha accents are present on the palate, which are quickly subdued by Japanese and Australian hops leading to a final state of satisfaction enjoyable for any fan of bitter beer."
	44
	45	AC_DEFINE_UNQUOTED([VERSION_NAME], ["$version_name"], [UST version name])
	46	AC_DEFINE_UNQUOTED([VERSION_DESCRIPTION], ["$version_description"], [UST version description])
	47
	48	AC_PROG_GREP
	49	# libtool link_all_deplibs fixup. See http://bugs.lttng.org/issues/321.
	50	AC_ARG_ENABLE(libtool-linkdep-fixup,
	51	AS_HELP_STRING([--disable-libtool-linkdep-fixup],
	52	[disable the libtool fixup for linking all dependent libraries (link_all_deplibs)]),
	53	libtool_fixup=$enableval,
	54	libtool_fixup=yes)
	55
	56	AS_IF([test "x$libtool_fixup" = "xyes"],
	57	[
	58	libtool_m4="$srcdir/config/libtool.m4"
	59	libtool_flag_pattern=".link_all_deplibs\s,\s\$1\s)"
	60	AC_MSG_CHECKING([for occurence(s) of link_all_deplibs = no in $libtool_m4])
	61	libtool_flag_pattern_count=$(grep -c "$libtool_flag_pattern\s=\sno" $libtool_m4)
	62	AS_IF([test $libtool_flag_pattern_count -ne 0],
	63	[
	64	AC_MSG_RESULT([$libtool_flag_pattern_count])
	65	AC_MSG_WARN([the detected libtool will not link all dependencies, forcing link_all_deplibs = unknown])
	66	sed -i "s/\($libtool_flag_pattern\)\s=\sno/\1=unknown/g" $libtool_m4
	67	],
	68	[
	69	AC_MSG_RESULT([none])
	70	])
	71	])
	72
	73	AM_CONDITIONAL([NO_SHARED], [test "x$enable_shared" = "xno"])
	74
	75	# Checks for programs.
	76	AC_PROG_CC
	77	AC_PROG_CXX
	78	AC_PROG_MAKE_SET
	79	LT_INIT
	80
	81	# rw_PROG_CXX_WORKS
	82	# Check whether the C++ compiler works.
	83	AC_CACHE_CHECK([whether the C++ compiler works],
	84	[rw_cv_prog_cxx_works],
	85	[AC_LANG_PUSH([C++])
	86	AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
	87	[check_cxx_designated_initializers=yes],
	88	[rw_cv_prog_cxx_works=no])
	89	if test "$check_cxx_designated_initializers" = "yes"; then
	90	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
	91	struct foo { int a; int b; };
	92	void fct(void)
	93	{
	94	struct foo f = { .a = 0, .b = 1 };
	95	}
	96	]])],[
	97	rw_cv_prog_cxx_works=yes
	98	],[
	99	rw_cv_prog_cxx_works=no
	100	])
	101	fi
	102	AC_LANG_POP([C++])])
	103
	104	AM_CONDITIONAL([CXX_WORKS], [test "x$rw_cv_prog_cxx_works" = "xyes"])
	105
	106	## Checks for libraries.
	107	AC_CHECK_LIB([dl], [dlopen],
	108	[
	109	have_libdl=yes
	110	],
	111	[
	112	#libdl not found, check for dlopen in libc.
	113	AC_CHECK_LIB([c], [dlopen],
	114	[
	115	have_libc_dl=yes
	116	],
	117	[
	118	AC_MSG_ERROR([Cannot find dlopen in libdl nor libc. Use [LDFLAGS]=-Ldir to specify their location.])
	119	])
	120	])
	121	AM_CONDITIONAL([LTTNG_UST_BUILD_WITH_LIBDL], [test "x$have_libdl" = "xyes"])
	122	AM_CONDITIONAL([LTTNG_UST_BUILD_WITH_LIBC_DL], [test "x$have_libc_dl" = "xyes"])
	123
	124	AC_CHECK_LIB([pthread], [pthread_create])
	125
	126	# Checks for header files.
	127	#AC_CHECK_HEADERS([fcntl.h stdint.h stdlib.h string.h sys/socket.h sys/time.h unistd.h])
	128
	129	# Checks for typedefs, structures, and compiler characteristics.
	130	AC_C_INLINE
	131	#AC_TYPE_INT16_T
	132	#AC_TYPE_INT32_T
	133	#AC_TYPE_INT64_T
	134	#AC_TYPE_INT8_T
	135	#AC_TYPE_PID_T
	136	#AC_TYPE_SIZE_T
	137	#AC_TYPE_SSIZE_T
	138	#AC_TYPE_UINT16_T
	139	#AC_TYPE_UINT32_T
	140	#AC_TYPE_UINT64_T
	141	#AC_TYPE_UINT8_T
	142	#AC_CHECK_TYPES([ptrdiff_t])
	143
	144	# Checks for library functions.
	145	AC_FUNC_MALLOC
	146	AC_CHECK_FUNCS([gettimeofday munmap socket strerror strtol sched_getcpu sysconf])
	147
	148	CFLAGS="-Wall $CFLAGS"
	149
	150	# URCU
	151
	152	# urcu - check if we just find the headers it out of the box.
	153	AC_CHECK_HEADERS([urcu-bp.h], [], [AC_MSG_ERROR([Cannot find [URCU] headers (urcu-bp.h). Use [CPPFLAGS]=-Idir to specify their location.
	154	This error can also occur when the liburcu package's configure script has not been run.])])
	155
	156	# urcu-cds - check that URCU Concurrent Data Structure lib is available to compilation
	157	# Part of Userspace RCU library 0.7.2 or better.
	158	AC_CHECK_LIB([urcu-cds], [_cds_lfht_new], [], [AC_MSG_ERROR([Cannot find
	159	liburcu-cds lib, part of Userspace RCU 0.7 or better. Use [LDFLAGS]=-Ldir to specify its location.])])
	160
	161	AC_MSG_CHECKING([caa_likely()])
	162	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
	163	#include <urcu/compiler.h>
	164	void fct(void)
	165	{
	166	if (caa_likely(1)) {
	167	}
	168	}
	169	]])],[
	170	AC_MSG_RESULT([yes])
	171	],[
	172	AC_MSG_RESULT([no])
	173	AC_MSG_ERROR([Please upgrade your version of liburcu to 0.6.6 or better])
	174
	175	])
	176
	177	# urcu - check that URCU lib is available to compilation
	178	AC_CHECK_LIB([urcu-bp], [synchronize_rcu_bp], [], [AC_MSG_ERROR([Cannot find liburcu-bp lib. Use [LDFLAGS]=-Ldir to specify its location.])])
	179
	180	# urcu - check that URCU lib is at least version 0.6
	181	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.])])
	182
	183	AC_MSG_CHECKING([host system alignment requirements])
	184	case $host_cpu in
	185	changequote(,)dnl
	186	i[3456]86)
	187	changequote([,])dnl
	188	;;
	189	x86_64) ;;
	190	amd64) ;;
	191	powerpc) ;;
	192	ppc64) ;;
	193	powerpc64) ;;
	194	s390) NO_UNALIGNED_ACCESS=1 ;;
	195	s390x) NO_UNALIGNED_ACCESS=1 ;;
	196	arm*) NO_UNALIGNED_ACCESS=1 ;;
	197	mips*) NO_UNALIGNED_ACCESS=1 ;;
	198	tile*) NO_UNALIGNED_ACCESS=1 ;;
	199	*) AC_MSG_ERROR([unable to detect alignment requirements (unsupported architecture ($host_cpu)?)]) ;;
	200	esac
	201	AC_MSG_RESULT([$host_cpu])
	202
	203	if test x$NO_UNALIGNED_ACCESS = x ; then
	204	AC_DEFINE([LTTNG_UST_HAVE_EFFICIENT_UNALIGNED_ACCESS], [1])
	205	fi
	206
	207	# Set compile flags to java include files if given
	208	AC_ARG_WITH([java-jdk],
	209	[AS_HELP_STRING([--with-java-jdk=DIR],[use the Java JDK in DIR. Ex : $JAVA_HOME.])],
	210	[JAVA_JDK=$withval],
	211	[JAVA_JDK=""]
	212	)
	213	AM_CONDITIONAL([HAVE_JAVA_JDK], [test $JAVA_JDK], [Java JDK path])
	214	AC_SUBST([JAVA_JDK])
	215
	216	AS_IF([test $JAVA_JDK],[
	217	AS_IF([test -d $JAVA_JDK],[
	218	AC_MSG_RESULT([using Java includes in $JAVA_SDK])
	219	SUBDIRS=`find $JAVA_JDK/include -type d`
	220	CPPFLAGS+=" "
	221	CPPFLAGS+=`for x in $SUBDIRS; do echo -n "-I$x "; done`
	222	CPPFLAGS+=" "
	223	],[
	224	AC_MSG_ERROR(Unable to find Java include files in $JAVA_JDK)
	225	])
	226	])
	227
	228	# Check for JNI header files if requested
	229	AC_ARG_WITH([jni-interface],
	230	[AS_HELP_STRING([--with-jni-interface],[build JNI interface between C and Java. Needs Java include files [default=no]])],
	231	[jni_interface=$withval],
	232	[jni_interface=no]
	233	)
	234
	235	AS_IF([test "x$jni_interface" = "xyes"],[
	236	AC_CHECK_HEADERS([jni.h],[],[
	237	AC_MSG_ERROR([missing jni.h
	238	Make sure Sun Java, OpenJDK or GCJ is installed and that this header file exists in the system path.
	239	Use the --with-java-jdk=DIR flag to point to your Java include files, or disable the JNI interface.])
	240	])
	241	])
	242	AM_CONDITIONAL([BUILD_JNI_INTERFACE], [test "x$jni_interface" = "xyes"])
	243
	244	# sdt.h integration
	245	AC_ARG_WITH([sdt],
	246	[AS_HELP_STRING([--with-sdt],[provide SystemTap integration via sdt.h [default=no]])],
	247	[with_sdt=$withval],
	248	[with_sdt="no"]
	249	)
	250
	251	AS_IF([test "x$with_sdt" = "xyes"],[
	252	AC_MSG_CHECKING([STAP_PROBEV()])
	253	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
	254	#define SDT_USE_VARIADIC
	255	#include <sys/sdt.h>
	256	void fct(void)
	257	{
	258	STAP_PROBEV(provider,name,1,2,3,4,5,6,7,8,9,10);
	259	}
	260	]])],[
	261	AC_MSG_RESULT([yes])
	262	AC_DEFINE([LTTNG_UST_HAVE_SDT_INTEGRATION], [1])
	263	],[
	264	AC_MSG_RESULT([no])
	265	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])
	266	])
	267	])
	268
	269	AC_MSG_CHECKING([whether shared libraries are enabled])
	270	AS_IF([test "x$enable_shared" = "xyes"],
	271	[
	272	AC_MSG_RESULT([yes])
	273	],
	274	[
	275	AC_MSG_RESULT([no])
	276	AC_MSG_ERROR([LTTng-UST requires shared libraries to be enabled])
	277	])
	278
	279	AC_ARG_WITH([lttng-system-rundir],
	280	AS_HELP_STRING([--with-lttng-system-rundir],
	281	[Location of the system directory where LTTng-UST expects the system-wide lttng-sessiond runtime files. The default is "/var/run/lttng".]),
	282	[lttng_system_rundir="$withval"],
	283	[lttng_system_rundir="/var/run/lttng"])
	284	AC_DEFINE_UNQUOTED([LTTNG_SYSTEM_RUNDIR], ["$lttng_system_rundir"],
	285	[LTTng system runtime directory])
	286
	287	lttnglibjavadir="${libdir}/lttng/java"
	288	AC_SUBST(lttnglibjavadir)
	289
	290	AM_PATH_PYTHON([2.7],BUILD_GEN_TP_EXAMPLES=1)
	291	AM_CONDITIONAL([BUILD_GEN_TP_EXAMPLES], [test $BUILD_GEN_TP_EXAMPLES], [Build examples requiring lttng-gen-tp])
	292
	293	AC_CONFIG_FILES([
	294	Makefile
	295	doc/Makefile
	296	doc/examples/Makefile
	297	include/Makefile
	298	include/lttng/ust-version.h
	299	snprintf/Makefile
	300	libringbuffer/Makefile
	301	liblttng-ust-comm/Makefile
	302	liblttng-ust/Makefile
	303	liblttng-ust-ctl/Makefile
	304	liblttng-ust-fork/Makefile
	305	liblttng-ust-dl/Makefile
	306	liblttng-ust-java/Makefile
	307	liblttng-ust-jul/Makefile
	308	liblttng-ust-libc-wrapper/Makefile
	309	liblttng-ust-cyg-profile/Makefile
	310	tools/Makefile
	311	tests/Makefile
	312	tests/hello/Makefile
	313	tests/hello.cxx/Makefile
	314	tests/same_line_tracepoint/Makefile
	315	tests/snprintf/Makefile
	316	tests/benchmark/Makefile
	317	tests/utils/Makefile
	318	tests/java-jul/Makefile
	319	lttng-ust.pc
	320	])
	321
	322	AC_OUTPUT
	323
	324	AS_ECHO()
	325	AS_ECHO("Version name: $version_name")
	326	AS_ECHO("$version_description")
	327
	328	# Report on the configuration options
	329	AS_ECHO()
	330	AS_ECHO("LTTng-UST will be built with the following options:")
	331
	332	AS_ECHO()
	333	AS_ECHO_N("Java support (JNI): ")
	334	AS_IF([test "x$jni_interface" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])
	335
	336	AS_ECHO_N("sdt.h integration: ")
	337	AS_IF([test "x$with_sdt" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])
	338
	339	AS_ECHO()
	340	AS_ECHO("Type 'make' to compile.")
	341