Andrea, upon your approval I will check into source GIT, tone_mapping.bp in cinelerra-5.1/plugins/blendprogram and modify cinelerra-5.1/plugins/blendprogram/Makefile to add that line like so:

BP_OBJS = \
chromakey.bp.so \
tone_mapping.bp.so \
background.bp.so

On Tue, Apr 1, 2025 at 7:04 AM Andrea paz <gamberucci.andrea@gmail.com> wrote:

Great, thank you.
This function, in my opinion, could be put in “=>Syslib”. So if it is
needed it is already contained in CinGG, if it is not needed it can be
ignored without any other effect.