I came across a compile error when building against WiredTiger today:

In file included from /home/alexg/work/toku/ft-engine/wt-index/src/wt_tokudb_int.h:7:0,
                 from /home/alexg/work/toku/ft-engine/wt-index/src/wt_api.c:4:
/home/alexg/work/wiredtiger/build_posix/wiredtiger.h:1996:23: error: unknown type name ‘u_int’

u_int is a BSD type, and the compiler complains if _STRICT_ANSI_ is defined (at least according to stack overflow:
http://stackoverflow.com/questions/15393905/c-pcap-library-unknown-types-error

I suspect the solution is to turn the parameter into a u_int32_t, but I decided to create an issue since that's an API change.