usr/local/portage/net-misc/knetworkmanager-svn/knetworkmanager-svn-575870.ebuild: line 42: cd: /var/tmp/portage/knetworkmanager-svn-575870/work/knetworkmanager-svn-575870: No such file or directory
>>> Source unpacked.
>>> Compiling source in /var/tmp/portage/knetworkmanager-svn-575870 ...
make: Makefile.cvs: No such file or directory
make: *** No rule to make target `Makefile.cvs'.  Stop.
make: *** No rule to make target `clean'.  Stop.

!!! ERROR: net-misc/knetworkmanager-svn-575870 failed.
Call stack:
  ebuild.sh, line 1546:   Called dyn_compile
  ebuild.sh, line 937:   Called src_compile
  knetworkmanager-svn-575870.ebuild, line 50:   Called econf
  ebuild.sh, line 543:   Called die

!!! no configure script found
!!! If you need support, post the topmost build error, and the call stack if relevant.

!!! This ebuild is from an overlay: '/usr/local/portage'