ecl-readline
A simple binding to GNU Readline console library for ECL (Embeddable Common Lisp) providing command line editing, symbol completion, history file and history size configuration.

Home page: https://common-lisp.net/project/ecl-readline/

I'm not seeing my message appear on the ecl-readline mailinglist so I'll just paste the info here. To get ecl-readline 0.4.1 to compile with ECL 10.4.1 when the latter is configured --with-cxx I had to make the following changes:

In ecl-readline.lisp line 47:

    added: (ffi:clines "#ifdef __cplusplus"
                       "#include <cstdlib>"
                       "#endif")

below the line "(ffi:clines "#include <readline/history.h>")".

In ecl-completions.lisp line 71:

    was: g_completions = malloc(#0 * sizeof(char*) + 1);
    now: g_completions = (char**)malloc(#0 * sizeof(char*) + 1);

I think the last line is legal C, but I haven't tested it.