Hi, the relevant parts of cat /proc/cpuinfo are flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nopl nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt hw_pstate npt lbrv svm_lock nrip_save vmmcall On that machine, cpuinfo2cpuflags generates CPU_FLAGS_X86="3dnow 3dnowext mmx mmxext popcnt sse sse2 sse3 sse4a" but my gcc-4.9.2 doesn't know about -m3dnowext and -mmmxext. This causes any package which requires a C-compiler to fail if the CPU_FLAGS_X86 line above is added to /etc/portage/make.conf
Could you please show a broken build.log? CPU_FLAGS_X86 are for USE flags not for compiler flags.
Sorry, I think I've added these to my CFLAGS, as well. Reverting this, there is no build error any more. Helmut
