проблемы с emerge -vuND wrold

Всех с Великим праздником Великой победы.

Вот про ошибку - при emerge -vuND world - сборка пакета app-crypt/mit-krb5-1.5.2-r1 вываливается с такой ошибкой:

configure: loading cache ../.././config.cache
configure: error: `CFLAGS' has changed since the previous run:
configure: former value: -O2 -march=k8 -fomit-frame-pointer -pipe
configure: current value: -O2 -march=k8 -fomit-frame-pointer -pipe
configure: error: changes in the environment can compromise the build
configure: error: run `make distclean' and/or `rm ../.././config.cache' and start over
configure: error: /bin/sh './configure' failed for lib/apputils

!!! Please attach the following file when filing a report to bugs.gentoo.org:
!!! /tmppkgdir/portage/app-crypt/mit-krb5-1.5.2-r1/work/krb5-1.5.2/src/config.log

!!! ERROR: app-crypt/mit-krb5-1.5.2-r1 failed.
Call stack:
ebuild.sh, line 1614: Called dyn_compile
ebuild.sh, line 971: Called qa_call 'src_compile'
environment, line 4040: Called src_compile
mit-krb5-1.5.2-r1.ebuild, line 45: Called econf '--without-krb4' '--without-tcl' '--enable-ipv6' '--enable-shared' '--with-system-et' '--with-system-ss' '--enable-dns-for-realm'
ebuild.sh, line 577: Called die

!!! econf failed
!!! If you need support, post the topmost build error, and the call stack if relevant.
!!! A complete build log is located at '/tmppkgdir/portage/app-crypt/mit-krb5-1.5.2-r1/temp/build.log'.