lttng-tools : undefined reference to rcu_read_lock_mb

[Vanni Genua <vannigenua@gmail.com>]

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After having installed on an Intel x86 platform lttng-modules,
userspace-rcu, lttng-ust, I tried to install LTTng-tools but I get the
following error, why?

> 1)
> lttng-tools # ./bootstrap
> + '[' '!' -e config ']'
> + autoreconf -i
> 2)
> lttng-tools # ./configure
> checking build system type... i686-pc-linux-gnu
> checking host system type... i686-pc-linux-gnu
> checking target system type... i686-pc-linux-gnu
> checking for a BSD-compatible install... /usr/bin/install -c
> checking whether build environment is sane... yes
> checking for a thread-safe mkdir -p... /bin/mkdir -p
> checking for gawk... gawk
> checking whether make sets $(MAKE)... yes
> checking for grep that handles long lines and -e... /bin/grep
> checking for occurence(s) of link_all_deplibs = no in
./config/libtool.m4... none
> checking for style of include used by make... GNU
> checking for gcc... gcc
> checking whether the C compiler works... yes
> checking for C compiler default output file name... a.out
> checking for suffix of executables...
> checking whether we are cross compiling... no
> checking for suffix of object files... o
> checking whether we are using the GNU C compiler... yes
> checking whether gcc accepts -g... yes
> checking for gcc option to accept ISO C89... none needed
> checking dependency style of gcc... gcc3
> checking how to run the C preprocessor... gcc -E
> checking for egrep... /bin/grep -E
> checking for ANSI C header files... yes
> checking for sys/types.h... yes
> checking for sys/stat.h... yes
> checking for stdlib.h... yes
> checking for string.h... yes
> checking for memory.h... yes
> checking for strings.h... yes
> checking for inttypes.h... yes
> checking for stdint.h... yes
> checking for unistd.h... yes
> checking for sys/types.h... (cached) yes
> checking for unistd.h... (cached) yes
> checking fcntl.h usability... yes
> checking fcntl.h presence... yes
> checking for fcntl.h... yes
> checking for string.h... (cached) yes
> checking pthread.h usability... yes
> checking pthread.h presence... yes
> checking for pthread.h... yes
> checking limits.h usability... yes
> checking limits.h presence... yes
> checking for limits.h... yes
> checking signal.h usability... yes
> checking signal.h presence... yes
> checking for signal.h... yes
> checking for stdlib.h... (cached) yes
> checking sys/un.h usability... yes
> checking sys/un.h presence... yes
> checking for sys/un.h... yes
> checking sys/socket.h usability... yes
> checking sys/socket.h presence... yes
> checking for sys/socket.h... yes
> checking for stdlib.h... (cached) yes
> checking stdio.h usability... yes
> checking stdio.h presence... yes
> checking for stdio.h... yes
> checking getopt.h usability... yes
> checking getopt.h presence... yes
> checking for getopt.h... yes
> checking sys/ipc.h usability... yes
> checking sys/ipc.h presence... yes
> checking for sys/ipc.h... yes
> checking sys/shm.h usability... yes
> checking sys/shm.h presence... yes
> checking for sys/shm.h... yes
> checking popt.h usability... yes
> checking popt.h presence... yes
> checking for popt.h... yes
> checking grp.h usability... yes
> checking grp.h presence... yes
> checking for grp.h... yes
> checking for pthread_create in -lpthread... yes
> checking for poptGetContext in -lpopt... yes
> checking whether cds_list_add is declared... yes
> checking whether cds_wfq_init is declared... yes
> checking whether cds_wfq_dequeue_blocking is declared... yes
> checking whether futex_async is declared... yes
> checking whether rcu_thread_offline is declared... yes
> checking whether rcu_thread_online is declared... yes
> checking whether caa_likely is declared... yes
> checking for ustctl_set_filter in -llttng-ust-ctl... yes
> checking for sched_getcpu... yes
> checking for sysconf... yes
> checking for sync_file_range... yes
> checking for dlopen in -ldl... yes
> checking for fmemopen in -lc... yes
> checking for open_memstream in -lc... yes
> configure: You may configure with --enable-python-bindings if you want
Python bindings.
> checking linux/version.h usability... yes
> checking linux/version.h presence... yes
> checking for linux/version.h... yes
> checking for Linux epoll(7) interface... yes
> checking for special C compiler options needed for large files... no
> checking for _FILE_OFFSET_BITS value needed for large files... 64
> checking for gcc... (cached) gcc
> checking whether we are using the GNU C compiler... (cached) yes
> checking whether gcc accepts -g... (cached) yes
> checking for gcc option to accept ISO C89... (cached) none needed
> checking dependency style of gcc... (cached) gcc3
> checking how to print strings... printf
> checking for a sed that does not truncate output... /bin/sed
> checking for fgrep... /bin/grep -F
> checking for ld used by gcc... /usr/i686-pc-linux-gnu/bin/ld
> checking if the linker (/usr/i686-pc-linux-gnu/bin/ld) is GNU ld... yes
> checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B
> checking the name lister (/usr/bin/nm -B) interface... BSD nm
> checking whether ln -s works... yes
> checking the maximum length of command line arguments... 1572864
> checking whether the shell understands some XSI constructs... yes
> checking whether the shell understands "+="... yes
> checking for /usr/i686-pc-linux-gnu/bin/ld option to reload object
files... -r
> checking for objdump... objdump
> checking how to recognize dependent libraries... pass_all
> checking for ar... ar
> checking for strip... strip
> checking for ranlib... ranlib
> checking command to parse /usr/bin/nm -B output from gcc object... ok
> checking for dlfcn.h... yes
> checking for objdir... .libs
> checking if gcc supports -fno-rtti -fno-exceptions... no
> checking for gcc option to produce PIC... -fPIC -DPIC
> checking if gcc PIC flag -fPIC -DPIC works... yes
> checking if gcc static flag -static works... yes
> checking if gcc supports -c -o file.o... yes
> checking if gcc supports -c -o file.o... (cached) yes
> checking whether the gcc linker (/usr/i686-pc-linux-gnu/bin/ld) supports
shared libraries... yes
> checking whether -lc should be explicitly linked in... no
> checking dynamic linker characteristics... GNU/Linux ld.so
> checking how to hardcode library paths into programs... immediate
> checking whether stripping libraries is possible... yes
> checking if libtool supports shared libraries... yes
> checking whether to build shared libraries... yes
> checking whether to build static libraries... yes
> checking for bison... bison -y
> checking for flex... flex
> checking lex output file root... lex.yy
> checking lex library... -lfl
> checking whether yytext is a pointer... yes
> configure: creating ./config.status
> config.status: creating Makefile
> config.status: creating doc/Makefile
> config.status: creating doc/man/Makefile
> config.status: creating include/Makefile
> config.status: creating extras/Makefile
> config.status: creating extras/bindings/Makefile
> config.status: creating extras/bindings/swig/Makefile
> config.status: creating extras/bindings/swig/python/Makefile
> config.status: creating src/Makefile
> config.status: creating src/common/Makefile
> config.status: creating src/common/kernel-ctl/Makefile
> config.status: creating src/common/kernel-consumer/Makefile
> config.status: creating src/common/ust-consumer/Makefile
> config.status: creating src/common/hashtable/Makefile
> config.status: creating src/common/sessiond-comm/Makefile
> config.status: creating src/common/compat/Makefile
> config.status: creating src/common/relayd/Makefile
> config.status: creating src/common/testpoint/Makefile
> config.status: creating src/lib/Makefile
> config.status: creating src/lib/lttng-ctl/Makefile
> config.status: creating src/lib/lttng-ctl/filter/Makefile
> config.status: creating src/lib/lttng-ctl/lttng-ctl.pc
> config.status: creating src/bin/Makefile
> config.status: creating src/bin/lttng-consumerd/Makefile
> config.status: creating src/bin/lttng-sessiond/Makefile
> config.status: creating src/bin/lttng-relayd/Makefile
> config.status: creating src/bin/lttng/Makefile
> config.status: creating tests/Makefile
> config.status: creating tests/kernel/Makefile
> config.status: creating tests/tools/Makefile
> config.status: creating tests/tools/streaming/Makefile
> config.status: creating tests/tools/filtering/Makefile
> config.status: creating tests/tools/health/Makefile
> config.status: creating tests/ust/Makefile
> config.status: creating tests/ust/nprocesses/Makefile
> config.status: creating tests/ust/high-throughput/Makefile
> config.status: creating tests/ust/low-throughput/Makefile
> config.status: creating tests/ust/before-after/Makefile
> config.status: creating tests/ust/multi-session/Makefile
> config.status: creating tests/ust/overlap/Makefile
> config.status: creating tests/ust/overlap/demo/Makefile
> config.status: creating include/config.h
> config.status: include/config.h is unchanged
> config.status: executing depfiles commands
> config.status: executing libtool commands
>
> Version name: Basse Messe
> Light coloured German ale whose style was named after the city Cologne
(Koln) where it was first brewed. It is a rather simple beer with lightly
fruity aromas and a delicate hoppy fragrance. The beer has a pronounced
malty taste with a subtle bitter aftertaste
>
> Target architecture: i686
> Lttng-UST support: Enabled
> Python binding: Disabled
> All binaries will be built.
>
> Binaries will be installed in:  /usr/local/bin
> Libraries will be installed in: /usr/local/lib
>
> The sessiond daemon will look in the following directories:
> 32-bit consumerd executable at:
/usr/local/lib/lttng/libexec/lttng-consumerd
> 32-bit consumer libraries in:   /usr/local/lib
> 64-bit consumerd executable at:
/usr/local/lib/lttng/libexec/lttng-consumerd
> 64-bit consumer libraries in:   /usr/local/lib
>
> 3) lttng-tools # make
> Making all in src
> make[1]: Entering directory `/usr/src/LTTng/lttng-tools/src'
> Making all in common
> make[2]: Entering directory `/usr/src/LTTng/lttng-tools/src/common'
> Making all in compat
> make[3]: Entering directory `/usr/src/LTTng/lttng-tools/src/common/compat'
>   CC     compat-fcntl.lo
>   CC     compat-epoll.lo
>   CCLD   libcompat.la
> make[3]: Leaving directory `/usr/src/LTTng/lttng-tools/src/common/compat'
> Making all in hashtable
> make[3]: Entering directory
`/usr/src/LTTng/lttng-tools/src/common/hashtable'
>   CC     hashtable.lo
>   CC     utils.lo
>   CC     rculfhash.lo
>   CC     rculfhash-mm-chunk.lo
>   CC     rculfhash-mm-mmap.lo
>   CC     rculfhash-mm-order.lo
>   CCLD   libhashtable.la
> make[3]: Leaving directory
`/usr/src/LTTng/lttng-tools/src/common/hashtable'
> Making all in kernel-ctl
> make[3]: Entering directory
`/usr/src/LTTng/lttng-tools/src/common/kernel-ctl'
>   CC     kernel-ctl.lo
>   CCLD   libkernel-ctl.la
> make[3]: Leaving directory
`/usr/src/LTTng/lttng-tools/src/common/kernel-ctl'
> Making all in sessiond-comm
> make[3]: Entering directory
`/usr/src/LTTng/lttng-tools/src/common/sessiond-comm'
>   CC     sessiond-comm.lo
>   CC     unix.lo
>   CC     inet.lo
>   CC     inet6.lo
>   CCLD   libsessiond-comm.la
> make[3]: Leaving directory
`/usr/src/LTTng/lttng-tools/src/common/sessiond-comm'
> Making all in relayd
> make[3]: Entering directory `/usr/src/LTTng/lttng-tools/src/common/relayd'
>   CC     relayd.lo
> relayd.c: In function 'recv_reply':
> relayd.c:90: warning: format '%ld' expects type 'long int', but argument
3 has type 'size_t'
> relayd.c:90: warning: format '%ld' expects type 'long int', but argument
3 has type 'size_t'
> relayd.c:90: warning: format '%ld' expects type 'long int', but argument
3 has type 'size_t'
> relayd.c:90: warning: format '%ld' expects type 'long int', but argument
3 has type 'size_t'
> relayd.c:98: warning: format '%lu' expects type 'long unsigned int', but
argument 4 has type 'size_t'
> relayd.c:98: warning: format '%lu' expects type 'long unsigned int', but
argument 4 has type 'size_t'
> relayd.c:98: warning: format '%lu' expects type 'long unsigned int', but
argument 4 has type 'size_t'
> relayd.c:98: warning: format '%lu' expects type 'long unsigned int', but
argument 4 has type 'size_t'
> relayd.c: In function 'relayd_send_data_hdr':
> relayd.c:353: warning: format '%ld' expects type 'long int', but argument
3 has type 'size_t'
> relayd.c:353: warning: format '%ld' expects type 'long int', but argument
3 has type 'size_t'
> relayd.c:353: warning: format '%ld' expects type 'long int', but argument
3 has type 'size_t'
> relayd.c:353: warning: format '%ld' expects type 'long int', but argument
3 has type 'size_t'
>   CCLD   librelayd.la
> make[3]: Leaving directory `/usr/src/LTTng/lttng-tools/src/common/relayd'
> Making all in kernel-consumer
> make[3]: Entering directory
`/usr/src/LTTng/lttng-tools/src/common/kernel-consumer'
>   CC     kernel-consumer.lo
>   CCLD   libkernel-consumer.la
> make[3]: Leaving directory
`/usr/src/LTTng/lttng-tools/src/common/kernel-consumer'
> Making all in ust-consumer
> make[3]: Entering directory
`/usr/src/LTTng/lttng-tools/src/common/ust-consumer'
>   CC     ust-consumer.lo
> ust-consumer.c: In function 'lttng_ustconsumer_read_subbuffer':
> ust-consumer.c:562: warning: format '%zd' expects type 'signed size_t',
but argument 3 has type 'long int'
> ust-consumer.c:562: warning: format '%zd' expects type 'signed size_t',
but argument 3 has type 'long int'
> ust-consumer.c:562: warning: format '%zd' expects type 'signed size_t',
but argument 3 has type 'long int'
> ust-consumer.c:562: warning: format '%zd' expects type 'signed size_t',
but argument 3 has type 'long int'
>   CCLD   libust-consumer.la
> make[3]: Leaving directory
`/usr/src/LTTng/lttng-tools/src/common/ust-consumer'
> Making all in testpoint
> make[3]: Entering directory
`/usr/src/LTTng/lttng-tools/src/common/testpoint'
>   CC     testpoint.lo
>   CCLD   libtestpoint.la
> make[3]: Leaving directory
`/usr/src/LTTng/lttng-tools/src/common/testpoint'
> make[3]: Entering directory `/usr/src/LTTng/lttng-tools/src/common'
>   CC     error.lo
>   CC     utils.lo
>   CC     runas.lo
>   CC     futex.lo
>   CC     uri.lo
>   CC     defaults.lo
>   CCLD   libcommon.la
>   CC     consumer.lo
> consumer.c: In function 'consumer_add_relayd_socket':
> consumer.c:2707: warning: 'relayd' may be used uninitialized in this
function
>   CCLD   libconsumer.la
> copying selected object files to avoid basename conflicts...
> make[3]: Leaving directory `/usr/src/LTTng/lttng-tools/src/common'
> make[2]: Leaving directory `/usr/src/LTTng/lttng-tools/src/common'
> Making all in lib
> make[2]: Entering directory `/usr/src/LTTng/lttng-tools/src/lib'
> Making all in lttng-ctl
> make[3]: Entering directory `/usr/src/LTTng/lttng-tools/src/lib/lttng-ctl'
> Making all in filter
> make[4]: Entering directory
`/usr/src/LTTng/lttng-tools/src/lib/lttng-ctl/filter'
>   YACC   filter-parser.c
> updating filter-parser.h
> updating filter-parser.output
> make  all-am
> make[5]: Entering directory
`/usr/src/LTTng/lttng-tools/src/lib/lttng-ctl/filter'
>   LEX    filter-lexer.c
>   CC     libfilter_la-filter-lexer.lo
> filter-lexer.c: In function 'yylex':
> filter-lexer.l:136: warning: ignoring return value of 'fwrite', declared
with attribute warn_unused_result
>   CC     libfilter_la-filter-parser.lo
>   CC     libfilter_la-filter-visitor-set-parent.lo
>   CC     libfilter_la-filter-visitor-xml.lo
>   CC     libfilter_la-filter-visitor-generate-ir.lo
>   CC     libfilter_la-filter-visitor-ir-check-binary-op-nesting.lo
>   CC     libfilter_la-filter-visitor-generate-bytecode.lo
>   CCLD   libfilter.la
>   CC     filter-grammar-test.o
>   CCLD   filter-grammar-test
> make[5]: Leaving directory
`/usr/src/LTTng/lttng-tools/src/lib/lttng-ctl/filter'
> make[4]: Leaving directory
`/usr/src/LTTng/lttng-tools/src/lib/lttng-ctl/filter'
> make[4]: Entering directory `/usr/src/LTTng/lttng-tools/src/lib/lttng-ctl'
>   CC     lttng-ctl.lo
>   CCLD   liblttng-ctl.la
> copying selected object files to avoid basename conflicts...
> make[4]: Leaving directory `/usr/src/LTTng/lttng-tools/src/lib/lttng-ctl'
> make[3]: Leaving directory `/usr/src/LTTng/lttng-tools/src/lib/lttng-ctl'
> make[3]: Entering directory `/usr/src/LTTng/lttng-tools/src/lib'
> make[3]: Nothing to be done for `all-am'.
> make[3]: Leaving directory `/usr/src/LTTng/lttng-tools/src/lib'
> make[2]: Leaving directory `/usr/src/LTTng/lttng-tools/src/lib'
> Making all in bin
> make[2]: Entering directory `/usr/src/LTTng/lttng-tools/src/bin'
> Making all in lttng-consumerd
> make[3]: Entering directory
`/usr/src/LTTng/lttng-tools/src/bin/lttng-consumerd'
>   CC     lttng-consumerd.o
>   CCLD   lttng-consumerd
>
/usr/lib/gcc/i686-pc-linux-gnu/4.4.4/../../../../i686-pc-linux-gnu/bin/ld:
warning: liburcu-common.so.1, needed by /usr/local/lib/liblttng-ust-ctl.so,
may conflict with liburcu-common.so.2
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`consumer_data_pending':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:2921: undefined
reference to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:3030: undefined
reference to `rcu_read_unlock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:3024: undefined
reference to `rcu_read_unlock_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`consumer_steal_stream_key':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:116: undefined reference
to `rcu_read_lock_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`consumer_find_stream':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:99: undefined reference
to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:107: undefined reference
to `rcu_read_unlock_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`consumer_steal_stream_key':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:127: undefined reference
to `rcu_read_unlock_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`consumer_find_stream':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:107: undefined reference
to `rcu_read_unlock_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`consumer_steal_channel_key':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:161: undefined reference
to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:172: undefined reference
to `rcu_read_unlock_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`consumer_add_channel':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:905: undefined reference
to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:918: undefined reference
to `rcu_read_unlock_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`destroy_relayd':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:234: undefined reference
to `call_rcu_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`consumer_thread_sessiond_poll':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:2523: undefined
reference to `rcu_register_thread_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:2639: undefined
reference to `rcu_unregister_thread_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`consumer_del_channel':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:814: undefined reference
to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:818: undefined reference
to `rcu_read_unlock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:839: undefined reference
to `call_rcu_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`consumer_del_metadata_stream':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:1853: undefined
reference to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:1862: undefined
reference to `rcu_read_unlock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:1886: undefined
reference to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:1912: undefined
reference to `rcu_read_unlock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:1931: undefined
reference to `call_rcu_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`consumer_thread_metadata_poll':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:2073: undefined
reference to `rcu_register_thread_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`destroy_stream_ht':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:1793: undefined
reference to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:1801: undefined
reference to `rcu_read_unlock_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`consumer_thread_metadata_poll':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:2247: undefined
reference to `rcu_unregister_thread_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:2183: undefined
reference to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:2236: undefined
reference to `rcu_read_unlock_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`consumer_add_metadata_stream':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:1959: undefined
reference to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:1998: undefined
reference to `rcu_read_unlock_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`validate_endpoint_status_metadata_stream':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:2040: undefined
reference to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:2055: undefined
reference to `rcu_read_unlock_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`lttng_consumer_cleanup':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:1044: undefined
reference to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:1053: undefined
reference to `rcu_read_unlock_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`cleanup_relayd_ht':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:246: undefined reference
to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:255: undefined reference
to `rcu_read_unlock_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`consumer_del_stream':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:396: undefined reference
to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:405: undefined reference
to `rcu_read_unlock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:430: undefined reference
to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:457: undefined reference
to `rcu_read_unlock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:475: undefined reference
to `call_rcu_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`consumer_thread_data_poll':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:2266: undefined
reference to `rcu_register_thread_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`consumer_update_poll_array':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:940: undefined reference
to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:961: undefined reference
to `rcu_read_unlock_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`destroy_data_stream_ht':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:1766: undefined
reference to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:1774: undefined
reference to `rcu_read_unlock_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`consumer_thread_data_poll':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:2505: undefined
reference to `rcu_unregister_thread_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`consumer_add_stream':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:586: undefined reference
to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:624: undefined reference
to `rcu_read_unlock_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`validate_endpoint_status_data_stream':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:2015: undefined
reference to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:2024: undefined
reference to `rcu_read_unlock_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`consumer_allocate_stream':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:501: undefined reference
to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:560: undefined reference
to `rcu_read_unlock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:564: undefined reference
to `rcu_read_unlock_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`update_endpoint_status_by_netidx':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:273: undefined reference
to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:290: undefined reference
to `rcu_read_unlock_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`lttng_consumer_on_read_subbuffer_splice':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:1517: undefined
reference to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:1687: undefined
reference to `rcu_read_unlock_mb'
> ../../../src/common/.libs/libconsumer.a(consumer.o): In function
`lttng_consumer_on_read_subbuffer_mmap':
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:1345: undefined
reference to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/consumer.c:1478: undefined
reference to `rcu_read_unlock_mb'
> ../../../src/common/.libs/libconsumer.a(kernel-consumer.o): In function
`lttng_kconsumer_recv_cmd':
>
/usr/src/LTTng/lttng-tools/src/common/kernel-consumer/kernel-consumer.c:112:
undefined reference to `rcu_read_lock_mb'
>
/usr/src/LTTng/lttng-tools/src/common/kernel-consumer/kernel-consumer.c:352:
undefined reference to `rcu_read_unlock_mb'
>
/usr/src/LTTng/lttng-tools/src/common/kernel-consumer/kernel-consumer.c:287:
undefined reference to `rcu_read_unlock_mb'
>
/usr/src/LTTng/lttng-tools/src/common/kernel-consumer/kernel-consumer.c:180:
undefined reference to `rcu_read_unlock_mb'
>
/usr/src/LTTng/lttng-tools/src/common/kernel-consumer/kernel-consumer.c:172:
undefined reference to `rcu_read_unlock_mb'
> ../../../src/common/.libs/libconsumer.a(hashtable.o): In function
`cds_lfht_new':
> /usr/src/LTTng/lttng-tools/src/common/hashtable/rculfhash.h:167:
undefined reference to `rcu_flavor_mb'
> ../../../src/common/.libs/libconsumer.a(ust-consumer.o): In function
`lttng_ustconsumer_recv_cmd':
> /usr/src/LTTng/lttng-tools/src/common/ust-consumer/ust-consumer.c:131:
undefined reference to `rcu_read_lock_mb'
> /usr/src/LTTng/lttng-tools/src/common/ust-consumer/ust-consumer.c:406:
undefined reference to `rcu_read_unlock_mb'
> /usr/src/LTTng/lttng-tools/src/common/ust-consumer/ust-consumer.c:376:
undefined reference to `rcu_read_unlock_mb'
> /usr/src/LTTng/lttng-tools/src/common/ust-consumer/ust-consumer.c:232:
undefined reference to `rcu_read_unlock_mb'
> /usr/src/LTTng/lttng-tools/src/common/ust-consumer/ust-consumer.c:165:
undefined reference to `rcu_read_unlock_mb'
> /usr/src/LTTng/lttng-tools/src/common/ust-consumer/ust-consumer.c:226:
undefined reference to `rcu_read_unlock_mb'
> collect2: ld returned 1 exit status
> make[3]: *** [lttng-consumerd] Error 1
> make[3]: Leaving directory
`/usr/src/LTTng/lttng-tools/src/bin/lttng-consumerd'
> make[2]: *** [all-recursive] Error 1
> make[2]: Leaving directory `/usr/src/LTTng/lttng-tools/src/bin'
> make[1]: *** [all-recursive] Error 1
> make[1]: Leaving directory `/usr/src/LTTng/lttng-tools/src'
> make: *** [all-recursive] Error 1
>

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