extern void
-lzma_lzma_optimum_fast(lzma_coder *restrict coder, lzma_mf *restrict mf,
+lzma_lzma_optimum_fast(lzma_lzma1_encoder *restrict coder,
+ lzma_mf *restrict mf,
uint32_t *restrict back_res, uint32_t *restrict len_res)
{
const uint32_t nice_len = mf->nice_len;