Trying to emerge net-misc/iputils-20151218 on a fresh stage3-amd64-uclibc-hardened-20170130.tar.bz2 installation failed with the following errors: ping6.c: In function 'niquery_option_subject_addr_handler': ping6.c:483:19: error: 'AI_IDN' undeclared (first use in this function) hints.ai_flags = AI_IDN; ^ ping6.c:483:19: note: each undeclared identifier is reported only once for each function it appears in ping6.c: In function 'main': ping6.c:930:19: error: 'AI_IDN' undeclared (first use in this function) hints.ai_flags = AI_IDN; ^ It seems that this error might be a missing patch? Reference: https://github.com/lluixhi/musl-extras/issues/3 (similar, but different file)
Error goes away if I remove "idn" from USE flags.
Should be fixed long time ago, this build is from original "not responding" maintainer, which missing _lot_ of important patches and also united ping. Feel free use -99999999 or some recent version listed here: https://github.com/iputils/iputils/releases David
A fixed =net-misc/iputils-20171016_pre should now be available.