Created attachment 509614 [details] emerge --info /usr/lib/gcc/x86_64-pc-linux-gnu/6.4.0/../../../../x86_64-pc-linux-gnu/bin/ld: libdw.so: No symbol version section for versioned symbol `dwarf_decl_column@ELFUTILS_0.143' /usr/lib/gcc/x86_64-pc-linux-gnu/6.4.0/../../../../x86_64-pc-linux-gnu/bin/ld: final link failed: Nonrepresentable section on output collect2: error: ld returned 1 exit status make[3]: *** [Makefile:1010: libdw.so] Error 1 make[2]: *** [Makefile:514: all] Error 2
Created attachment 509616 [details] build.log notice -flto in make.conf
/tmp/.portage/portage/media-libs/alsa-lib-1.1.5/temp/ccw9OKH2.s: Assembler messages: /tmp/.portage/portage/media-libs/alsa-lib-1.1.5/temp/ccw9OKH2.s: Error: invalid attempt to declare external version name as default in symbol `snd_pcm_forward@@ALSA_0.9.0rc8' /tmp/.portage/portage/media-libs/alsa-lib-1.1.5/temp/ccw9OKH2.s: Error: invalid attempt to declare external version name as default in symbol `snd_pcm_hw_params_get_format@@ALSA_0.9.0rc4' lto-wrapper: fatal error: /usr/x86_64-pc-linux-gnu/gcc-bin/7.2.0/x86_64-pc-linux-gnu-gcc returned 1 exit status compilation terminated. /usr/lib/gcc/x86_64-pc-linux-gnu/7.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: error: lto-wrapper failed
its failing with -flto use flag . Originally, i had a different set of use flags, when i filed this bug.
Created attachment 526900 [details] build log fails in .16 as well
*** This bug has been marked as a duplicate of bug 616108 ***