emerge fontconfig /var/tmp/portage/media-libs/fontconfig-2.7.0/temp/environment: line 2676: 20537 Illegal instruction /usr/bin/fc-cache -sr [ !! ] Reproducible: Always
Created attachment 197631 [details] gdb /usr/bin/fc-cache
Created attachment 197632 [details] emerge --info
same error here.
"Illegal instruction" almost always means your CFLAGS are wrong for your system. In your case, you have -msse4.1 to enables SSE 4.1, and -msse4 to enable SSE 4.2 as well. Are you sure your processor supports both? Could you please check if you get better results by omitting -msse4?
fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall lm constant_tsc arch_perfmon pebs bts rep_good pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 lahf_lm tpr_shadow vnmi flexpriority oh, my cpu is -msse4.1 ok. I try remove -msse4 and recompile.
It's fine for me. thank you. -msse4 eq sse4.2 is so difficult.