Found, analysed and tested by trac user Jamal.
Fixes part of Ticket #1404.
#define CLIP_AND_BIAS(x) (av_clip((x) + BIAS, CLIP_MIN, CLIP_MAX))
-#if CONFIG_PRORES_DECODER
+#if CONFIG_PRORES_DECODER | CONFIG_PRORES_LGPL_DECODER
/**
* Add bias value, clamp and output pixels of a slice
*/
void ff_proresdsp_init(ProresDSPContext *dsp, AVCodecContext *avctx)
{
-#if CONFIG_PRORES_DECODER
+#if CONFIG_PRORES_DECODER | CONFIG_PRORES_LGPL_DECODER
dsp->idct_put = prores_idct_put_c;
dsp->idct_permutation_type = FF_NO_IDCT_PERM;