Gentoo's Bugzilla –
Attachment 395030 Details for
Bug 538012app-text/poppler-0.30.0 with dev-util/pkgconfig-openbsd - CMake Error at cmake/modules/MacroEnsureVersion.cmake:76 (MATH): math cannot parse the expression: "Use of my $_ is experimental at /usr/lib64/perl55*10000 + Use of my $_ is experimental at ...