[syslog-ng]Problem compiling libol-0.2.23 and syslog-ng-1.4.12

I have a problem compiling syslog-ng on Sol 2.7. libol compiles and installs ok. syslog-ng won't compile, afstreams.c: In function `io_stream_get'; afstreams.c:167: too few arguments to function `init_file' I've checked and the proto in libol/src/io.h has 4 arguments whereas the usage in afstreams.c is with 3, anyone have a fix? james