Lighttpd

I've tested it with Fedora 13, Ubuntu 10.04 and Debian 6.0 (testing branch) and they all seem to have this problem.
During make while it tries to compile libev event handler it fails and exits with error about stderr not being defined.
I've been advised by stbuehler to add #include <stdio.h> to buffer.h after #include <sys/types.h> and it helps but I think modifying the source each time I download it from SVN isn't nice.
Wouldn't it be wise to add this single line to buffer.h in SVN?