[Bug target/66840] New: [5/6 Regression] plugins fail to build on powerpc64le-linux-gnu

[doko at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66840

            Bug ID: 66840
           Summary: [5/6 Regression] plugins fail to build on
                    powerpc64le-linux-gnu
           Product: gcc
           Version: 5.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: doko at gcc dot gnu.org
  Target Milestone: ---

seen while building the gcc-python plugin on powerpc64le-linux-gnu:

In file included from
/usr/lib/gcc/powerpc64le-linux-gnu/5/plugin/include/tm.h:30:0,
                 from
/usr/lib/gcc/powerpc64le-linux-gnu/5/plugin/include/gcc-plugin.h:31,
                 from
config-tests/00001-checking-for-gcc-plugin.h/feature-test.c:1:
/usr/lib/gcc/powerpc64le-linux-gnu/5/plugin/include/config/rs6000/default64.h:22:27:
fatal error: rs6000-cpus.def: No such file or directory
compilation terminated.

how to add this file to the plugin headers which get installed?