| 
 |  | 
| New to current users of | ||
|---|---|---|
| Feature | SCO OpenServer | UnixWare | 
| dlopen, dlclose, dlsym, dladdr are thread safe | yes | yes | 
| dlsym: | ||
| - added ldaddr interface | yes | yes | 
| - added RTLD_NEXT handle | yes | yes | 
| ld: | ||
| - recognizes SCO OpenServer ELF objects | no | yes | 
| - converts COFF objects to SCO OpenServer ELF objects | yes | yes | 
| - new option allows mixing of objects | yes | yes | 
| - allows you to make result look like either SCO OpenServer or UnixWare 7 object | yes | yes | 
| libelf converts COFF objects to SCO OpenServer ELF objects | yes | yes | 
| cof2elf converts COFF objects to SCO OpenServer ELF objects | yes | yes | 
| elfmark positively marks an ELF object as SCO OpenServer or UnixWare 7 object | yes | yes |