Tvheadend

Hi there!

I just tried to install the latest version from git (I use gentoo portage) however, I have the following error when emerging...

...
deblock.cpp:(.text+0x448): undefined reference to `__cxa_guard_acquire'
deblock.cpp:(.text+0x4d2): undefined reference to `__cxa_guard_release'
/var/tmp/portage/media-tv/tvheadend-9999/work/tvheadend-9999/build.linux/ffmpeg/build/ffmpeg/lib/libx265.a(analysis.cpp.o):(.data.rel.ro._ZTIN4x2658Analysis5PMODEE[_ZTIN4x2658Analysis5PMODEE]+0x0): undefined reference to `vtable for _cxxabiv1::_si_class_type_info'
/var/tmp/portage/media-tv/tvheadend-9999/work/tvheadend-9999/build.linux/ffmpeg/build/ffmpeg/lib/libx265.a(search.cpp.o):(.data.rel.ro._ZTIN4x2656Search3PMEE[_ZTIN4x2656Search3PMEE]+0x0): undefined reference to `vtable for _cxxabiv1::_si_class_type_info'
collect2: error: ld returned 1 exit status
Makefile:618: recipe for target '/var/tmp/portage/media-tv/tvheadend-9999/work/tvheadend-9999/build.linux/tvheadend' failed
make¹: * [/var/tmp/portage/media-tv/tvheadend-9999/work/tvheadend-9999/build.linux/tvheadend] Error 1
make¹: Leaving directory '/var/tmp/portage/media-tv/tvheadend-9999/work/tvheadend-9999'
Makefile:85: recipe for target 'ffmpeg_all' failed
make: * [ffmpeg_all] Error 2 * ERROR: media-tv/tvheadend-9999::gentoo failed (compile phase): * emake failed

the last version i compiled was: 4.1-1710~g54b57cf-dirty (? 54b57cf9ad042b6d5e9d85ef531f3d1d31200fb4 ?)
now there is some problem with ffmpeg!?