Hey Man,
I got this same error and after much toying and searching the web and such, I got it to work......here are the steps
1.View your Makefile, look for the line (should be close to the top) that says:
XREQ = /usr/local/lib/libtcl7.4.a
*note your XREQ might be XREQS also
REMEBER THE PATH
2. Then go back into your home directory and do the following
mkdir lib
cd lib
ln -s (path from XREQ(S)) libtcl.a
3. go back into your eggdrop dir and do ./configure and make again and it should go smoothly
Hey, just wondering where you downloaded your copy of the EggDrop, and what OS you are both running it on? Maybe then we could find out WHY it happened in the first place, and get a fix