ECL is based on earlier compilers, which go back to KCL from 1984. The idea of CLICC was to compile programs to small static C programs. Really small and with

ECL is based on earlier compilers, which go back to KCL from 1984. The idea of CLICC was to compile programs to small static C programs. Really small and with little or no dynamic features of Lisp (code loading, runtime compilation, eval, redefinition, ...). It did not have all the bells and whistles of ECL (virtual machine, runtime code loading, debugging, full dynamic Common Lisp, ...).