CC       src/resample.lo
src/resample.c: In function ‘resampler_basic_zero’:
src/resample.c:567:106: warning: unused parameter ‘in’ [-Wunused-parameter]
 static int resampler_basic_zero(SpeexResamplerState *st, spx_uint32_t channel_index, const spx_word16_t *in, spx_uint32_t *in_len, spx_word16_t *out, spx_uint32_t *out_len)
                                                                                      ~~~~~~~~~~~~~~~~~~~~^~
src/resample.c: In function ‘libopusenc_resampler_init_frac’:
src/resample.c:803:17: warning: unused variable ‘i’ [-Wunused-variable]
    spx_uint32_t i;
                 ^