The Emacs tuareg-mode for O/Caml syntax highlighting and editing had no -sparc/~sparc/sparc KEYWORD . It should now because it compiled and installed well on my sparc .
Steps to Reproduce:
Tha portage tree has only 1.41.4 but current version is now 1.41.5 ...
I've added the ~sparc keyword to 1.41.4. If you want the version bumped to the latest, please file a new bug. Thanks for the bug report :)