Ruby: I am stuck with OS X Tiger (10.4) Ruby problem and can't install mysql gem

I have followed the step from http://tech.rufy.com/entry/46 but I get the following error:

mv /usr/local/lib/libreadline.a /usr/local/lib/libreadline.old/usr/bin/install -c -m 644 libreadline.a /usr/local/lib/libreadline.atest -n "ranlib" && ranlib /usr/local/lib/libreadline.amv /usr/local/lib/libhistory.a /usr/local/lib/libhistory.old/usr/bin/install -c -m 644 libhistory.a /usr/local/lib/libhistory.atest -n "ranlib" && ranlib /usr/local/lib/libhistory.atest -d shlib || mkdir shlib( cd shlib ; make all )make[1]: Nothing to be done for `all'.( cd shlib ; make DESTDIR= install )/bin/sh ../support/mkdirs /usr/local/lib/bin/sh ../support/shlib-install -O darwin8.3.0 -d /usr/local/lib -i "/usr/bin/install -c -m 644" libhistory.5.0.dylib/bin/sh ../support/shlib-install -O darwin8.3.0 -d /usr/local/lib -i "/usr/bin/install -c -m 644" libreadline.5.0.dylibinstall: you may need to run ldconfig % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed100 3542k 100 3542k 0 0 193k 0 0:00:18 0:00:18 --:--:-- 233kcan't find header files for ruby.make: *** No targets specified and no makefile found. Stop.

I don't know what do to make MySQL working with Rails

Somebody help me. May be I will take this problem to hack night