* Package:    dev-util/lttng-modules-2.8.0
 * Repository: gentoo
 * Maintainer: dlan@gentoo.org
 * USE:        abi_x86_64 amd64 elibc_glibc kernel_linux userland_GNU
 * FEATURES:   preserve-libs sandbox userpriv usersandbox
 * Determining the location of the kernel source code
 * Found kernel source directory:
 *     /usr/src/linux
 * Found kernel object directory:
 *     /lib/modules/4.11.0/build
 * Found sources for kernel version:
 *     4.11.0
 * Checking for suitable kernel configuration options...
 [ ok ]
>>> Unpacking source...
>>> Unpacking lttng-modules-2.8.0.tar.bz2 to /var/tmp/portage/dev-util/lttng-modules-2.8.0/work
>>> Source unpacked in /var/tmp/portage/dev-util/lttng-modules-2.8.0/work
>>> Preparing source in /var/tmp/portage/dev-util/lttng-modules-2.8.0/work/lttng-modules-2.8.0 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/dev-util/lttng-modules-2.8.0/work/lttng-modules-2.8.0 ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/dev-util/lttng-modules-2.8.0/work/lttng-modules-2.8.0 ...
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' default 
make -C /lib/modules/4.11.0/build M=/var/tmp/portage/dev-util/lttng-modules-2.8.0/work/lttng-modules-2.8.0 CONFIG_LTTNG=m modules
make[1]: Entering directory '/usr/src/linux-4.11.0'
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.8.0/work/lttng-modules-2.8.0/lttng-ring-buffer-client-discard.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.8.0/work/lttng-modules-2.8.0/lttng-ring-buffer-client-overwrite.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.8.0/work/lttng-modules-2.8.0/lttng-ring-buffer-metadata-client.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.8.0/work/lttng-modules-2.8.0/lttng-ring-buffer-client-mmap-discard.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.8.0/work/lttng-modules-2.8.0/lttng-ring-buffer-client-mmap-overwrite.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.8.0/work/lttng-modules-2.8.0/lttng-ring-buffer-metadata-mmap-client.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.8.0/work/lttng-modules-2.8.0/lttng-clock.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.8.0/work/lttng-modules-2.8.0/lttng-events.o
  CC [M]  /var/tmp/portage/dev-util/lttng-modules-2.8.0/work/lttng-modules-2.8.0/lttng-abi.o
In file included from /var/tmp/portage/dev-util/lttng-modules-2.8.0/work/lttng-modules-2.8.0/lttng-abi.c:53:0:
/var/tmp/portage/dev-util/lttng-modules-2.8.0/work/lttng-modules-2.8.0/wrapper/kref.h: In function ‘lttng_kref_get’:
/var/tmp/portage/dev-util/lttng-modules-2.8.0/work/lttng-modules-2.8.0/wrapper/kref.h:39:24: error: passing argument 1 of ‘atomic_add_unless’ from incompatible pointer type [-Werror=incompatible-pointer-types]
  if (atomic_add_unless(&kref->refcount, 1, INT_MAX) != INT_MAX) {
                        ^
In file included from ./include/linux/tracepoint-defs.h:10:0,
                 from ./arch/x86/include/asm/msr.h:67,
                 from ./arch/x86/include/asm/processor.h:20,
                 from ./arch/x86/include/asm/cpufeature.h:4,
                 from ./arch/x86/include/asm/thread_info.h:52,
                 from ./include/linux/thread_info.h:25,
                 from ./arch/x86/include/asm/preempt.h:6,
                 from ./include/linux/preempt.h:80,
                 from ./include/linux/spinlock.h:50,
                 from ./include/linux/seqlock.h:35,
                 from ./include/linux/time.h:5,
                 from ./include/linux/stat.h:18,
                 from ./include/linux/module.h:10,
                 from /var/tmp/portage/dev-util/lttng-modules-2.8.0/work/lttng-modules-2.8.0/lttng-abi.c:40:
./include/linux/atomic.h:504:19: note: expected ‘atomic_t * {aka struct <anonymous> *}’ but argument is of type ‘refcount_t * {aka struct refcount_struct *}’
 static inline int atomic_add_unless(atomic_t *v, int a, int u)
                   ^~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:295: /var/tmp/portage/dev-util/lttng-modules-2.8.0/work/lttng-modules-2.8.0/lttng-abi.o] Error 1
make[1]: *** [Makefile:1492: _module_/var/tmp/portage/dev-util/lttng-modules-2.8.0/work/lttng-modules-2.8.0] Error 2
make[1]: Leaving directory '/usr/src/linux-4.11.0'
make: *** [Makefile:110: modules] Error 2
 * ERROR: dev-util/lttng-modules-2.8.0::gentoo failed (compile phase):
 *   emake failed
 * 
 * If you need support, post the output of `emerge --info '=dev-util/lttng-modules-2.8.0::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=dev-util/lttng-modules-2.8.0::gentoo'`.
 * The complete build log is located at '/var/log/portage/dev-util:lttng-modules-2.8.0:20170512-012300.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/dev-util/lttng-modules-2.8.0/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-util/lttng-modules-2.8.0/temp/environment'.
 * Working directory: '/var/tmp/portage/dev-util/lttng-modules-2.8.0/work/lttng-modules-2.8.0'
 * S: '/var/tmp/portage/dev-util/lttng-modules-2.8.0/work/lttng-modules-2.8.0'