Problem compiling 4.0.20 on SCO ux7.1.3

[Nick Brennan]

We're having some trouble compiling version 4.0.20 on UnixWare 7.1.3. We have mp4 installed, and have the full gnu utility suite installed also. We are using the compile command

CC="gcc" CFLAGS="-I/usr/local/include" CXX="gcc" CXXFLAGS="-I/usr/local/include" ./configure --prefix=/usr/local/mysql --enable-thread-safe-client --with-innodb --with-berkelye-db=./bdb --with-openssl --with-extra-charsets=complex

taken from this website. The make command fails:

Making all in libmysql_r
make[2]: Entering directory `/mysql-4.0.20/libmysql_r'
make[2]: *** No rule to make target `my_init.lo', needed by `libmysqlclient_r.la'. Stop.
make[2]: Leaving directory `/mysql-4.0.20/libmysql_r'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/mysql-4.0.20'
make: *** [all] Error 2

We are using the gnu utilities bundle with make 3.79.1, Perl 5.004_04 etc. Configure doesn't report an error. Any advice/ suggestions gratefully received.