I am compiling the current git repository of powertab on Fedora 40 with gcc 14.1.1.
minizip-ng-compat-devel 3.0.10 is installed.
I needed to fix source/formats/gp7/gp7exporter.cpp to allow powertab to compile:

• adding '#include <zlib.h>'
• renaming zipOpenNewFileInZip64 to zipOpenNewFileInZip_64
  After that powertab compiled fine.