Getting errors while compiling Clewn - c

Question

My environment:
OS: OSX ML 10.8.5
VIM: 7.4
GCC: 4.2.1 (Apple LLVM version 5.0)
GDB: GNU gdb 6.3.50-20050815
I want to debugging in VIM with C programming language. After I seached Google, I found Clewn, but when I make it, it returned the following messages.
make all-recursive
Making all in .
gcc -DHAVE_CLEWN -g -O2 -Wall -o clewn clewn.o gdb_lvl2.o gdb_lvl3.o misc.o netbeans.o obstack.o pty.o -lreadline -lcurses
Undefined symbols for architecture x86_64:
"_ding", referenced from:
_clewn_beep in misc.o
"_rl_getc", referenced from:
_cli_getc in clewn.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [clewn] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2
Excuse for my English, hope you know what I means. And thank you so much!!!

Answer 1

I haven't used clewn since around 2007–2008 and never on OS X, but you could try the following to at least get it to compile.
"_ding", referenced from:
_clewn_beep in misc.o
Simply comment out the body of the clewn_beep function. At least for now.
"_rl_getc", referenced from:
_cli_getc in clewn.o
Try replacing the call to rl_getc in clewn.c with a call to cli_getc and see if that works.
I also had to add the following line in clewn.c to get it to compile (OS X 10.8.5):
extern int rl_done;