cppcheck 1.80 was released on 2017-07-29 :
Thank you for the bump request.
You can help the maintainer with further information:
Does a simple bump  work on your system?
Chances are high, because a first look on the bump revealed only small changes.
renaming the ebuild works for me
Confirm, renaming works for me as well in an EPREFIX environment.
cppcheck 1.81 was released on 2017-10-07 :
confirming that copying/renaming the 1.80 to 1.81 ebuild worked for me in my PREFIX environment.
Note that I have filed https://bugs.gentoo.org/634106 as well, not sure if the qt4 does not work only since 1.81 or longer.
Bing, tested with 1.80 with qt4 use flag and it works, so version 1.81 breaks GUI support. So for bumping https://bugs.gentoo.org/634106 needs to be fixed.
*** Bug 634106 has been marked as a duplicate of this bug. ***
Created attachment 498498 [details]
Attached is a ebuild for version 1.81 where I switched to qt5 support.
Changed the use flag and dependency and switched to eqmake5 and emake to build the gui. GUI is working now with qt5.
The bug has been closed via the following commit(s):
Author: Jens Lindenmeier <email@example.com>
AuthorDate: 2017-11-22 19:47:35 +0000
Commit: Andreas Sturmlechner <firstname.lastname@example.org>
CommitDate: 2017-11-22 22:00:50 +0000
dev-util/cppcheck: 1.81 version bump
Package-Manager: Portage-2.3.16, Repoman-2.3.6
dev-util/cppcheck/Manifest | 1 +
dev-util/cppcheck/cppcheck-1.81.ebuild | 100 +++++++++++++++++++++++++++++++++
2 files changed, 101 insertions(+)
Thanks for your work!