[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])
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])

# 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	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
	31	# Compute minor/major/patchlevel version numbers
	32	AC_PROG_SED
	33	major_version=$(echo AC_PACKAGE_VERSION \| sed 's/^\([[0-9]]\)\.[[0-9]]\.[[0-9]].$/\1/')
	34	minor_version=$(echo AC_PACKAGE_VERSION \| sed 's/^[[0-9]]\.\([[0-9]]\)\.[[0-9]].$/\1/')
	35	patchlevel_version=$(echo AC_PACKAGE_VERSION \| sed 's/^[[0-9]]\.[[0-9]]\.\([[0-9]]\).$/\1/')
	36	AC_SUBST([MAJOR_VERSION], [$major_version])
	37	AC_SUBST([MINOR_VERSION], [$minor_version])
	38	AC_SUBST([PATCHLEVEL_VERSION], [$patchlevel_version])
	39	AC_DEFINE_UNQUOTED([VERSION_MAJOR], $major_version, [UST major version number])
	40	AC_DEFINE_UNQUOTED([VERSION_MINOR], $minor_version, [UST minor version number])
	41	AC_DEFINE_UNQUOTED([VERSION_PATCHLEVEL], $patchlevel_version, [UST patchlevel version number])
	42
	43	version_name="Époque Opaque"
	44	version_description="The Époque Opaque is a black IPA from Trou du Diable brewery. The nose is eerily reminiscent of the coffee crisp candy from of our childhood. These strong mocha accents are present on the palate, which are quickly subdued by Japanese and Australian hops leading to a final state of satisfaction enjoyable for any fan of bitter beer."
	45
	46	AC_DEFINE_UNQUOTED([VERSION_NAME], ["$version_name"], [UST version name])
	47	AC_DEFINE_UNQUOTED([VERSION_DESCRIPTION], ["$version_description"], [UST version description])
	48
	49	AC_PROG_GREP
	50	# libtool link_all_deplibs fixup. See http://bugs.lttng.org/issues/321.
	51	AC_ARG_ENABLE(libtool-linkdep-fixup,
	52	AS_HELP_STRING([--disable-libtool-linkdep-fixup],
	53	[disable the libtool fixup for linking all dependent libraries (link_all_deplibs)]),
	54	libtool_fixup=$enableval,
	55	libtool_fixup=yes)
	56
	57	AS_IF([test "x$libtool_fixup" = "xyes"],
	58	[
	59	libtool_m4="$srcdir/config/libtool.m4"
	60	libtool_flag_pattern=".link_all_deplibs\s,\s\$1\s)"
	61	AC_MSG_CHECKING([for occurence(s) of link_all_deplibs = no in $libtool_m4])
	62	libtool_flag_pattern_count=$(grep -c "$libtool_flag_pattern\s=\sno" $libtool_m4)
	63	AS_IF([test $libtool_flag_pattern_count -ne 0],
	64	[
	65	AC_MSG_RESULT([$libtool_flag_pattern_count])
	66	AC_MSG_WARN([the detected libtool will not link all dependencies, forcing link_all_deplibs = unknown])
	67	sed -i "s/\($libtool_flag_pattern\)\s=\sno/\1=unknown/g" $libtool_m4
	68	],
	69	[
	70	AC_MSG_RESULT([none])
	71	])
	72	])
	73
	74	AM_CONDITIONAL([NO_SHARED], [test "x$enable_shared" = "xno"])
	75
	76	# Checks for programs.
	77	AC_PROG_CC
	78	AC_PROG_CXX
	79	AC_PROG_MAKE_SET
	80	LT_INIT
	81
	82	# rw_PROG_CXX_WORKS
	83	# Check whether the C++ compiler works.
	84	AC_CACHE_CHECK([whether the C++ compiler works],
	85	[rw_cv_prog_cxx_works],
	86	[AC_LANG_PUSH([C++])
	87	AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
	88	[check_cxx_designated_initializers=yes],
	89	[rw_cv_prog_cxx_works=no])
	90	if test "$check_cxx_designated_initializers" = "yes"; then
	91	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
	92	struct foo { int a; int b; };
	93	void fct(void)
	94	{
	95	struct foo f = { .a = 0, .b = 1 };
	96	}
	97	]])],[
	98	rw_cv_prog_cxx_works=yes
	99	],[
	100	rw_cv_prog_cxx_works=no
	101	])
	102	fi
	103	AC_LANG_POP([C++])])
	104
	105	AM_CONDITIONAL([CXX_WORKS], [test "x$rw_cv_prog_cxx_works" = "xyes"])
	106
	107	## Checks for libraries.
	108	AC_CHECK_LIB([dl], [dlopen],
	109	[
	110	have_libdl=yes
	111	],
	112	[
	113	#libdl not found, check for dlopen in libc.
	114	AC_CHECK_LIB([c], [dlopen],
	115	[
	116	have_libc_dl=yes
	117	],
	118	[
	119	AC_MSG_ERROR([Cannot find dlopen in libdl nor libc. Use [LDFLAGS]=-Ldir to specify their location.])
	120	])
	121	])
	122	AM_CONDITIONAL([LTTNG_UST_BUILD_WITH_LIBDL], [test "x$have_libdl" = "xyes"])
	123	AM_CONDITIONAL([LTTNG_UST_BUILD_WITH_LIBC_DL], [test "x$have_libc_dl" = "xyes"])
	124
	125	AC_CHECK_LIB([pthread], [pthread_create])
	126
	127	# Checks for header files.
	128	#AC_CHECK_HEADERS([fcntl.h stdint.h stdlib.h string.h sys/socket.h sys/time.h unistd.h])
	129
	130	# Checks for typedefs, structures, and compiler characteristics.
	131	AC_C_INLINE
	132	#AC_TYPE_INT16_T
	133	#AC_TYPE_INT32_T
	134	#AC_TYPE_INT64_T
	135	#AC_TYPE_INT8_T
	136	#AC_TYPE_PID_T
	137	#AC_TYPE_SIZE_T
	138	#AC_TYPE_SSIZE_T
	139	#AC_TYPE_UINT16_T
	140	#AC_TYPE_UINT32_T
	141	#AC_TYPE_UINT64_T
	142	#AC_TYPE_UINT8_T
	143	#AC_CHECK_TYPES([ptrdiff_t])
	144
	145	# Checks for library functions.
	146	AC_FUNC_MALLOC
	147	AC_CHECK_FUNCS([gettimeofday munmap socket strerror strtol sched_getcpu sysconf])
	148
	149	CFLAGS="-Wall $CFLAGS"
	150
	151	# URCU
	152
	153	# urcu - check if we just find the headers it out of the box.
	154	AC_CHECK_HEADERS([urcu-bp.h], [], [AC_MSG_ERROR([Cannot find [URCU] headers (urcu-bp.h). Use [CPPFLAGS]=-Idir to specify their location.
	155	This error can also occur when the liburcu package's configure script has not been run.])])
	156
	157	# urcu-cds - check that URCU Concurrent Data Structure lib is available to compilation
	158	# Part of Userspace RCU library 0.7.2 or better.
	159	AC_CHECK_LIB([urcu-cds], [_cds_lfht_new], [], [AC_MSG_ERROR([Cannot find
	160	liburcu-cds lib, part of Userspace RCU 0.7 or better. Use [LDFLAGS]=-Ldir to specify its location.])])
	161
	162	AC_MSG_CHECKING([caa_likely()])
	163	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
	164	#include <urcu/compiler.h>
	165	void fct(void)
	166	{
	167	if (caa_likely(1)) {
	168	}
	169	}
	170	]])],[
	171	AC_MSG_RESULT([yes])
	172	],[
	173	AC_MSG_RESULT([no])
	174	AC_MSG_ERROR([Please upgrade your version of liburcu to 0.6.6 or better])
	175
	176	])
	177
	178	# urcu - check that URCU lib is available to compilation
	179	AC_CHECK_LIB([urcu-bp], [synchronize_rcu_bp], [], [AC_MSG_ERROR([Cannot find liburcu-bp lib. Use [LDFLAGS]=-Ldir to specify its location.])])
	180
	181	# urcu - check that URCU lib is at least version 0.6
	182	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.])])
	183
	184	AC_MSG_CHECKING([host system alignment requirements])
	185	case $host_cpu in
	186	changequote(,)dnl
	187	i[3456]86)
	188	changequote([,])dnl
	189	;;
	190	x86_64) ;;
	191	amd64) ;;
	192	powerpc) ;;
	193	ppc64) ;;
	194	powerpc64) ;;
	195	s390) NO_UNALIGNED_ACCESS=1 ;;
	196	s390x) NO_UNALIGNED_ACCESS=1 ;;
	197	arm*) NO_UNALIGNED_ACCESS=1 ;;
	198	mips*) NO_UNALIGNED_ACCESS=1 ;;
	199	tile*) NO_UNALIGNED_ACCESS=1 ;;
	200	*) AC_MSG_ERROR([unable to detect alignment requirements (unsupported architecture ($host_cpu)?)]) ;;
	201	esac
	202	AC_MSG_RESULT([$host_cpu])
	203
	204	if test x$NO_UNALIGNED_ACCESS = x ; then
	205	AC_DEFINE([LTTNG_UST_HAVE_EFFICIENT_UNALIGNED_ACCESS], [1])
	206	fi
	207
	208	# Set compile flags to java include files if given
	209	AC_ARG_WITH([java-jdk],
	210	[AS_HELP_STRING([--with-java-jdk=DIR],[use the Java JDK in DIR. Ex : $JAVA_HOME.])],
	211	[JAVA_JDK=$withval],
	212	[JAVA_JDK=""]
	213	)
	214	AM_CONDITIONAL([HAVE_JAVA_JDK], [test $JAVA_JDK], [Java JDK path])
	215	AC_SUBST([JAVA_JDK])
	216
	217	AS_IF([test $JAVA_JDK],[
	218	AS_IF([test -d $JAVA_JDK],[
	219	AC_MSG_RESULT([using Java includes in $JAVA_SDK])
	220	SUBDIRS=`find $JAVA_JDK/include -type d`
	221	CPPFLAGS+=" "
	222	CPPFLAGS+=`for x in $SUBDIRS; do echo -n "-I$x "; done`
	223	CPPFLAGS+=" "
	224	],[
	225	AC_MSG_ERROR(Unable to find Java include files in $JAVA_JDK)
	226	])
	227	])
	228
	229	# Check for JNI header files if requested
	230	AC_ARG_WITH([jni-interface],
	231	[AS_HELP_STRING([--with-jni-interface],[build JNI interface between C and Java. Needs Java include files [default=no]])],
	232	[jni_interface=$withval],
	233	[jni_interface=no]
	234	)
	235
	236	AS_IF([test "x$jni_interface" = "xyes"],[
	237	AC_CHECK_HEADERS([jni.h],[],[
	238	AC_MSG_ERROR([missing jni.h
	239	Make sure Sun Java, OpenJDK or GCJ is installed and that this header file exists in the system path.
	240	Use the --with-java-jdk=DIR flag to point to your Java include files, or disable the JNI interface.])
	241	])
	242	])
	243	AM_CONDITIONAL([BUILD_JNI_INTERFACE], [test "x$jni_interface" = "xyes"])
	244
	245	# sdt.h integration
	246	AC_ARG_WITH([sdt],
	247	[AS_HELP_STRING([--with-sdt],[provide SystemTap integration via sdt.h [default=no]])],
	248	[with_sdt=$withval],
	249	[with_sdt="no"]
	250	)
	251
	252	AS_IF([test "x$with_sdt" = "xyes"],[
	253	AC_MSG_CHECKING([STAP_PROBEV()])
	254	AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
	255	#define SDT_USE_VARIADIC
	256	#include <sys/sdt.h>
	257	void fct(void)
	258	{
	259	STAP_PROBEV(provider,name,1,2,3,4,5,6,7,8,9,10);
	260	}
	261	]])],[
	262	AC_MSG_RESULT([yes])
	263	AC_DEFINE([LTTNG_UST_HAVE_SDT_INTEGRATION], [1])
	264	],[
	265	AC_MSG_RESULT([no])
	266	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])
	267	])
	268	])
	269
	270	AC_MSG_CHECKING([whether shared libraries are enabled])
	271	AS_IF([test "x$enable_shared" = "xyes"],
	272	[
	273	AC_MSG_RESULT([yes])
	274	],
	275	[
	276	AC_MSG_RESULT([no])
	277	AC_MSG_ERROR([LTTng-UST requires shared libraries to be enabled])
	278	])
	279
	280	AC_ARG_WITH([lttng-system-rundir],
	281	AS_HELP_STRING([--with-lttng-system-rundir],
	282	[Location of the system directory where LTTng-UST expects the system-wide lttng-sessiond runtime files. The default is "/var/run/lttng".]),
	283	[lttng_system_rundir="$withval"],
	284	[lttng_system_rundir="/var/run/lttng"])
	285	AC_DEFINE_UNQUOTED([LTTNG_SYSTEM_RUNDIR], ["$lttng_system_rundir"],
	286	[LTTng system runtime directory])
	287
	288	lttnglibjavadir="${libdir}/lttng/java"
	289	AC_SUBST(lttnglibjavadir)
	290
	291	AM_PATH_PYTHON([2.7],BUILD_GEN_TP_EXAMPLES=1)
	292	AM_CONDITIONAL([BUILD_GEN_TP_EXAMPLES], [test $BUILD_GEN_TP_EXAMPLES], [Build examples requiring lttng-gen-tp])
	293
	294	AC_CONFIG_FILES([
	295	Makefile
	296	doc/Makefile
	297	doc/examples/Makefile
	298	include/Makefile
	299	include/lttng/ust-version.h
	300	snprintf/Makefile
	301	libringbuffer/Makefile
	302	liblttng-ust-comm/Makefile
	303	liblttng-ust/Makefile
	304	liblttng-ust-ctl/Makefile
	305	liblttng-ust-fork/Makefile
	306	liblttng-ust-dl/Makefile
	307	liblttng-ust-java/Makefile
	308	liblttng-ust-jul/Makefile
	309	liblttng-ust-libc-wrapper/Makefile
	310	liblttng-ust-cyg-profile/Makefile
	311	tools/Makefile
	312	tests/Makefile
	313	tests/hello/Makefile
	314	tests/hello.cxx/Makefile
	315	tests/same_line_tracepoint/Makefile
	316	tests/snprintf/Makefile
	317	tests/benchmark/Makefile
	318	tests/utils/Makefile
	319	tests/java-jul/Makefile
	320	lttng-ust.pc
	321	])
	322
	323	AC_OUTPUT
	324
	325	AS_ECHO()
	326	AS_ECHO("Version name: $version_name")
	327	AS_ECHO("$version_description")
	328
	329	# Report on the configuration options
	330	AS_ECHO()
	331	AS_ECHO("LTTng-UST will be built with the following options:")
	332
	333	AS_ECHO()
	334	AS_ECHO_N("Java support (JNI): ")
	335	AS_IF([test "x$jni_interface" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])
	336
	337	AS_ECHO_N("sdt.h integration: ")
	338	AS_IF([test "x$with_sdt" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])
	339
	340	AS_ECHO()
	341	AS_ECHO("Type 'make' to compile.")
	342