Hi, I was trying to compile ruby so it found Tcl/Tk in /opt/ActiveTcl rather than /usr/local I've tried env CPPFLAGS=-I/opt/ActiveTcl/include LDFLAGS=-L/opt/ActiveTcl/lib ./configure --prefix=/opt/Ruby and env CFLAGS=-I/opt/ActiveTcl/include LDFLAGS=-L/opt/ActiveTcl/lib --prefix=/opt/Ruby I've also tried editing the paths in ruby-1.6.8/ext/tcltklib/extconf.rb Thank you in advance for any help you can give me, Richard Ryan