The file '/usr/lib/x86_64-linux-gnu/libtcl8.6.so' given to option --with-tcllib is not valid.
Specify the full path including the file name (e.g. /usr/lib/libtcl8.5.so)
configure will now attempt to autodetect both the Tcl library and header.
checking for Tcl library... not found
checking for Tcl header... not found
checking whether the Tcl system has changed... yes
Tcl cannot be found on this system.
Eggdrop requires Tcl and the Tcl development files to compile.
If you already have Tcl installed on this system, make sure you
also have the development files (common package names include
'tcl-dev' and 'tcl-devel'). If I just wasn't looking
in the right place for it, re-run ./configure using the
See doc/COMPILE-GUIDE's 'Tcl Detection and Installation' section for more
how to fix:
./configure --with-tclinc=/usr/include/tcl8.6/tcl.h --with-tcllib=/usr/lib/x86_64-linux-gnu/libtcl8.6.so