smooth_add, smart_crossfade is not working ubunt 21.04

[xamke]

Hi,

After install ubunt 21.04, some of functions not working with error.(liquidsoap 1.4.2 installed by apt-get install liquidsoap)

Error 4: Undefined variable smooth_add

even smart_corssfade show same error.

Please let me how to fix it.

Thank you

[smimram]

It is strange. Those functions are still present in Liquidsoap 1.4.2. I guess that the problem comes from the fact that they are defined in the standard library, which is not loaded for some reason?