* Package:    dev-util/lttng-modules-2.10.6-r1
 * Repository: gentoo
 * Maintainer: dlan@gentoo.org
 * USE:        abi_x86_64 amd64 elibc_glibc kernel_linux userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox splitdebug userpriv usersandbox
 * Determining the location of the kernel source code
 * Found kernel source directory:
 *     /usr/src/linux
 * Found sources for kernel version:
 *     4.19.0
 * Checking for suitable kernel configuration options...
 [ ok ]
>>> Unpacking source...
>>> Unpacking lttng-modules-2.10.6.tar.bz2 to /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work
>>> Source unpacked in /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work
>>> Preparing source in /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6 ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6 ...
ln: failed to create symbolic link 'Module.symvers': File exists
 * Preparing  module
make -j1 HOSTCC=x86_64-pc-linux-gnu-gcc CROSS_COMPILE=x86_64-pc-linux-gnu- 'LDFLAGS=-m elf_x86_64' KERNELDIR=/usr/src/linux default 
make -C /usr/src/linux M=/var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6 CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m modules
make[1]: Entering directory '/usr/src/linux-4.19.0'
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/lib/ringbuffer/ring_buffer_backend.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/lib/ringbuffer/ring_buffer_frontend.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/lib/ringbuffer/ring_buffer_iterator.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/lib/ringbuffer/ring_buffer_vfs.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/lib/ringbuffer/ring_buffer_splice.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/lib/ringbuffer/ring_buffer_mmap.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/lib/prio_heap/lttng_prio_heap.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/lib/../wrapper/splice.o
  LD [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/lib/lttng-lib-ring-buffer.o
/var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/Kbuild:249: CONFIG_KALLSYMS_ALL is disabled, therefore probe "writeback" is disabled. Rebuild your kernel with this configuration option enabled in order to trace this subsystem.
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/lttng-probe-sched.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/lttng-probe-irq.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/lttng-probe-timer.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/lttng-probe-kmem.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/lttng-probe-module.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/lttng-probe-power.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/lttng-probe-statedump.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/lttng-probe-i2c.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/lttng-probe-x86-irq-vectors.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/lttng-probe-x86-exceptions.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/lttng-probe-signal.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/lttng-probe-block.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/lttng-probe-napi.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/lttng-probe-skb.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/lttng-probe-net.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/lttng-probe-sock.o
In file included from /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/../probes/define_trace.h:100,
                 from /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/../instrumentation/events/lttng-module/sock.h:63,
                 from /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/lttng-probe-sock.c:40:
/var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/../probes/lttng-tracepoint-event-impl.h:143:6: error: conflicting types for ‘trace_sock_exceed_buf_limit’
 void trace_##_name(_proto);
      ^~~~~~
/var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/../probes/lttng-tracepoint-event-impl.h:55:2: note: in expansion of macro ‘LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP’
  LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args))
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/../probes/lttng-tracepoint-event-impl.h:97:2: note: in expansion of macro ‘LTTNG_TRACEPOINT_EVENT_MAP’
  LTTNG_TRACEPOINT_EVENT_MAP(name, name,    \
  ^~~~~~~~~~~~~~~~~~~~~~~~~~
/var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/../instrumentation/events/lttng-module/sock.h:26:1: note: in expansion of macro ‘LTTNG_TRACEPOINT_EVENT’
 LTTNG_TRACEPOINT_EVENT(sock_exceed_buf_limit,
 ^~~~~~~~~~~~~~~~~~~~~~
In file included from ./include/trace/events/sock.h:10,
                 from /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/lttng-probe-sock.c:31:
./include/linux/tracepoint.h:235:21: note: previous definition of ‘trace_sock_exceed_buf_limit’ was here
  static inline void trace_##name(proto)    \
                     ^~~~~~
./include/linux/tracepoint.h:398:2: note: in expansion of macro ‘__DECLARE_TRACE’
  __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args),  \
  ^~~~~~~~~~~~~~~
./include/linux/tracepoint.h:534:2: note: in expansion of macro ‘DECLARE_TRACE’
  DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
  ^~~~~~~~~~~~~
./include/trace/events/sock.h:92:1: note: in expansion of macro ‘TRACE_EVENT’
 TRACE_EVENT(sock_exceed_buf_limit,
 ^~~~~~~~~~~
make[3]: *** [scripts/Makefile.build:312: /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes/lttng-probe-sock.o] Error 1
make[2]: *** [scripts/Makefile.build:546: /var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6/probes] Error 2
make[1]: *** [Makefile:1517: _module_/var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6] Error 2
make[1]: Leaving directory '/usr/src/linux-4.19.0'
make: *** [Makefile:111: modules] Error 2
 * ERROR: dev-util/lttng-modules-2.10.6-r1::gentoo failed (compile phase):
 *   emake failed
 * 
 * If you need support, post the output of `emerge --info '=dev-util/lttng-modules-2.10.6-r1::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=dev-util/lttng-modules-2.10.6-r1::gentoo'`.
 * The complete build log is located at '/var/log/portage/dev-util:lttng-modules-2.10.6-r1:20181103-114118.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/temp/environment'.
 * Working directory: '/var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6'
 * S: '/var/tmp/portage/dev-util/lttng-modules-2.10.6-r1/work/lttng-modules-2.10.6'