Gentoo's Bugzilla –
Attachment 880092 Details for
Bug 910426mail-client/claws-mail-4.1.1-r2[litehtml] - [...].libs/liblitehtml_la-background.o [...] In file included from /usr/include/c++/v1/cstddef:42: ../../../../version:1:1: error: unknown type name 'echo'