Gentoo's Bugzilla –
Attachment 604138 Details for
Bug 706162sys-kernel/gentoo-sources-5.4.14 with sys-devel/make-4.3 - In file included from scripts/gcc-plugins/structleak_plugin.c:32: scripts/gcc-plugins/gcc-common.h:5:10: fatal error: bversion.h: No such file or directory