dlfunc
iconv_open = (iconv_open_t *)dlfunc(iconvlib, ICONV_OPEN);
dl_iconv = (dl_iconv_t *)dlfunc(iconvlib, ICONV_ENGINE);
dl_iconv_close = (dl_iconv_close_t *)dlfunc(iconvlib,
dlfunc_t dlfunc(void * __restrict, const char * __restrict);
fn = (nss_module_register_fn)dlfunc(mod.handle,
rawfunc = dlfunc(mod_handle, "mod_main");
dlfunc_t dlfunc(void *, const char *) __exported;