From the cited article on ports of the libev event loop library: "The whole thing is a bug if you ask me - basically any system interface you touch is broken, whether it is locales, poll, kqueue or even the OpenGL drivers." with no particular details on what is broken in Mac OS X.

Issues with porting to AIX, Solaris and Windows are also discussed in that article, and with reports of errors, though with no specific details provided for those platforms.

Without error details, there is also insufficient information around whether alternatives or workarounds or fixes might exist, or whether there were bug reports and reproducers logged that would allow the vendors to address the (unspecified) errors.