Gentoo's Bugzilla –
Attachment 373080 Details for
Bug 505134media-plugins/gimp-gmic-1.5.8.4 with media-gfx/gimp-9999 - In file included from from gmic_gimp.cpp:63: /usr/include/gimp-2.0/libgimpwidgets/gimpcolorprofilechooserdialog.h:43:41: error: expected unqualified-id before ‘private’