# ./configure.rb
checking for a BSD compatible install... /usr/bin/install -c
checking whether we are using gcc... yes
checking Ruby version... 1.9.1
checking for static Apache module support... no
checking for dynamic Apache module support... yes
creating Makefile
creating libruby.module
creating doc/Makefile
# make
gcc   -O2 -g   -fPIC -Wall  -O2 -pipe -DINET6 -Dss_family=__ss_family -Dss_len=__ss_len -DHAVE_SOCKADDR_LEN -DMOD_SSL=208116 -DEAPI -DUSE_SETUSERCONTEXT -I. -I/usr/local/include/ruby-1.9.1 -I/usr/local/include/ruby-1.9.1/i386-openbsd4.4 -I/usr/lib/apache/include  -oconnection.o -c connection.c
In file included from /usr/lib/apache/include/ap_config.h:196,
                 from /usr/lib/apache/include/httpd.h:81,
                 from mod_ruby.h:101,
                 from connection.c:28:
/usr/include/regex.h:53: error: conflicting types for `regex_t'
/usr/local/include/ruby-1.9.1/ruby/oniguruma.h:662: error: previous declaration of `regex_t'
connection.c: In function `connection_set_user':
connection.c:84: error: structure has no member named `ptr'
connection.c:84: error: structure has no member named `len'
connection.c: In function `connection_set_auth_type':
connection.c:95: error: structure has no member named `ptr'
connection.c:95: error: structure has no member named `len'
*** Error code 1

Stop in /root/mod_ruby-1.3.0 (line 92 of /usr/share/mk/sys.mk).
#