[PATCH] 'add symbol' feature in objcopy

[Qian Hong]

Hi Ronald,

Thanks a lot for your work, it is a nice feature.

I tried latest cross compile binutils using mingw-w64-i686-gcc, and
found these warnings (-Werror):

objcopy.c: In function ‘parse_symflags’:
objcopy.c:792:7: error: implicit declaration of function ‘strndup’
[-Werror=implicit-function-declaration]
       PARSE_OTHER ("before=", *other);
       ^
objcopy.c:774:9: error: incompatible implicit declaration of built-in
function ‘strndup’ [-Werror]
  fval = strndup (s + sizeof fname - 1, len - sizeof fname + 1)
         ^
objcopy.c:792:7: note: in expansion of macro ‘PARSE_OTHER’
       PARSE_OTHER ("before=", *other);
       ^
objcopy.c: In function ‘copy_main’:
objcopy.c:4085:23: error: incompatible implicit declaration of
built-in function ‘strndup’ [-Werror]
      newsym->symdef = strndup (optarg, s - optarg);
                       ^
cc1: all warnings being treated as errors
Makefile:939: recipe for target 'objcopy.o' failed
make[4]: *** [objcopy.o] Error 1

Would you mind have a look? Thanks!