/* the library name is the same as the argument of the '-l' option */
LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
{
#ifdef TCC_TARGET_PE
    const char *libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", "%s/%s.c", NULL };
    const char **pp = s->static_link ? libs + 4 : libs;
    const char *filename;
#else
    const char *libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
    const char **pp = s->static_link ? libs + 1 : libs;
#endif
    while (*pp) {
        if (0 == tcc_add_library_internal(s, *pp,
            libraryname, 0, s->library_paths, s->nb_library_paths)) {
#ifdef TCC_TARGET_PE
            /* extra search for c file together with def file if there is no dll */
            if (pp < libs + 2) {
                filename = tcc_strdup(s->target_deps[s->nb_target_deps - 1]);
                strcpy(tcc_fileextension(filename), ".dll");
                if (tcc_open(s, filename) < 0) {
                    strcpy(tcc_fileextension(filename), ".c");
                    tcc_add_file_internal(s, filename, 0);
                } else
                    tcc_close();
            }
#endif
            return 0;
        }
        ++pp;
    }
    return -1;
}