Sat, May 19, 2007 at 11:04:15AM -0700, Paul Goyette:
> Sources updated just moments ago...
> 
> #   compile  util/events.o
> /usr/obj/tooldir/x86_64/i386/bin/i386--netbsdelf-gcc -O2  -Werror 
> -DNETBSD3 -DUSE_SASL_AUTH -DDEF_SERVER_SASL_TYPE=\"dovecot\" 
> -I/usr/src/gnu/dist/postfix/src/util  -I/usr/src/gnu/dist/postfix/src/dns 
> -I/usr/src/gnu/dist/postfix/src/global  
> -I/usr/src/gnu/dist/postfix/src/master -I/usr/src/gnu/dist/postfix/src/util 
> -I/usr/src/gnu/dist/postfix/src/tls -I/usr/src/gnu/dist/postfix/src/milter  
> -I /usr/src/gnu/dist/postfix/src/xsasl
> -DUSE_TLS -DDEF_HTML_DIR=\"/usr/share/doc/html/postfix\"
> -DDEF_README_DIR=\"/usr/share/examples/postfix\"
> -DDEF_SAMPLE_DIR=\"/usr/share/examples/postfix\"
> -DDEF_MANPAGE_DIR=\"/usr/share/man\"   -nostdinc -isystem 
> /usr/obj/destdir/i386/usr/include -c 
> /usr/src/gnu/dist/postfix/src/util/events.c -o events.o
> /usr/src/gnu/dist/postfix/src/util/events.c:158:2: error: #error "must 
> define EVENTS_STYLE"

I do not see what the problem could be here; it should default to
EVENTS_STYLE_SELECT at worst.  Could you ensure that you are up to date
with the head, please?