Ebuild fails with duplicate symbols in link phase:

/usr/lib/gcc/x86_64-pc-linux-gnu/11.3.0/../../../../x86_64-pc-linux-gnu/bin/ld: vars.o:/var/tmp/portage/mail-client/mailx-8.1.2.20160123/work/bsd-mailx-8.1.2-0.20160123cvs.orig/glob.h:40: multiple definition of `msgCount'; aux.o:/var/tmp/portage/mail-client/mailx-8.1.2.20160123/work/bsd-mailx-8.1.2-0.20160123cvs.orig/glob.h:40: first defined here
collect2: error: ld returned 1 exit status