ср, 3 окт. 2018 г. в 12:50, Walter Dnes <waltd...@waltdnes.org>: > > What's happening is that the ebuild is going through a lookup table of > CPU flags, and saying... "if you invoke a certain advanced feature, then > you also have to invoke the base version of that feature". If you ask > for the advanced feature, but not the base feature, it's like trying to > build the top 4 storeys of a 10-storey building without the bottom 6 > storeys. From your output... > > If you're calling for avx2, then you also need avx > > cpu_flags_x86_avx2? ( cpu_flags_x86_avx ) > > If you're calling for sse4_2, then you also need sse4_1 > > cpu_flags_x86_sse4_2? ( cpu_flags_x86_sse4_1 ) > > If you're calling for sse4_1, then you also need ssse3 > > cpu_flags_x86_sse4_1? ( cpu_flags_x86_ssse3 ) > > If you're calling for ssse3, then you also need sse3 (count the "s") > > cpu_flags_x86_ssse3? ( cpu_flags_x86_sse3 ) > > If you're calling for sse3, then you also need sse2 > > cpu_flags_x86_sse3? ( cpu_flags_x86_sse2 ) > > If you're calling for sse2, then you also need sse > > cpu_flags_x86_sse2? ( cpu_flags_x86_sse ) > > If you're calling for sse, then you also need mmxext > > cpu_flags_x86_sse? ( cpu_flags_x86_mmxext ) > > If you're calling for mmxext, then you also need mmx > > cpu_flags_x86_mmxext? ( cpu_flags_x86_mmx ) > > AMD If you're calling for 3dnowext, then you also need 3dnow > > cpu_flags_x86_3dnowext? ( cpu_flags_x86_3dnow ) > > AMD If you're calling for 3dnow, then you also need mmx > > cpu_flags_x86_3dnow? ( cpu_flags_x86_mmx ) > > Basically, if flag B is an extension of flag A and builds on it, then > calling flag B requires calling flag A. Think of it as a "march flag > dependency tree".
Ok, thank you for explanation. Interestingly, I have build almost entire system without mmxext flag and only firefox, ffmpeg and vlc started to complane about it.
