This enhances the CMake build files by applying knowledge that has been acquired while adding Protobuf-C to the build process.
Mostly replacing execute_process with add_custom_command, thereby also fixing problems with files that weren't copied even though they had been changed, therefore being then outdated in the build directory.
This enhances the CMake build files by applying knowledge that has been acquired while adding Protobuf-C to the build process.
Mostly replacing
execute_processwithadd_custom_command, thereby also fixing problems with files that weren't copied even though they had been changed, therefore being then outdated in the build directory.