@jonas
Ok and thanks for the hint.
However, it is irritating that the CMakeCache.txt file contains the following text in the preamble:

# This is the CMakeCache file. # For build in directory: /Users/user/Bastelbude/strawberry/build # It was generated by CMake: /opt/strawberry_macos_arm64_release/bin/cmake # You can edit this file to change values found and used by cmake. # If you do not want to change any of the values, simply exit the editor. # If you do want to change a value, simply edit, save, and exit the editor. # The syntax for the file is as follows: # KEY:TYPE=VALUE # KEY is the name of a variable in the cache. # TYPE is a hint to GUIs for the type of VALUE, DO NOT EDIT TYPE!. # VALUE is the current value for the KEY.

(Note: The file now comes from the build for the ARM architecture - that's where I successfully performed my hack).

By adding the line to the CMake command, you are referring to the “Configure build” step in https://wiki.strawberrymusicplayer.org/wiki/Build_macOS, where the expression can then be added. If this is correct, I will then adapt or revise my first post.