emerge net-ftp/proftpd

Чего-то не ставится:
!!! ERROR: net-ftp/proftpd-1.3.1_rc2 failed.
Call stack:
ebuild.sh, line 1614: Called dyn_compile
ebuild.sh, line 971: Called qa_call 'src_compile'
ebuild.sh, line 44: Called src_compile
proftpd-1.3.1_rc2.ebuild, line 166: Called die

!!! emake failed
!!! If you need support, post the topmost build error, and the call stack if relevant.
!!! A complete build log is located at '/var/tmp/portage/net-ftp/proftpd-1.3.1_rc2/temp/build.log'.

В чём может быть дело?