Created attachment 428034 [details] emerge --info =dev-lang/ocaml-3.12.1::gentoo The (non-autoconf) configure script that comes with the ocaml source code doesn't detect tcl/tk 8.6 and "silently" disables the labltk object at build time. Downgrading to tcl 8.5 fixes this. There is a "tk" use flag on dev-lang/ocaml that sets a dependency for >=dev-lang/tk-3.3.3. Could a dependency for <dev-lang/tk-8.6 also get added? Thanks.
What about newer ocaml versions?
tk support is now split in dev-ml/labltk that does support tk 8.6; closing as obsolete