9.2.2. Contents of Tcl
              Installed programs:
              tclsh (link to tclsh8.6) and
              tclsh8.6
            
            
              Installed libraries:
              libtcl8.6.so, libtclstub8.6.a
            
          The Tcl package contains the Tool Command Language.
Increase memory size for regular expressions where required.
sed -i s/500/5000/ generic/regc_nfa.c
Prepare Tcl for compilation:
cd unix ./configure --prefix=/tools
Build the package:
make
Install the package:
make install
Tcl's private header files are needed for the next package, Expect. Install them into /tools:
make install-private-headers
Now make a necessary symbolic link:
ln -sv tclsh8.6 /tools/bin/tclsh