scala-3.0.0.4 2 does not compile on Mac OS Catalina 10.15.13

[beugelpp]

64%] Building CXX object src/checkpoints/CMakeFiles/obj_checkpoints.dir/checkpoints.cpp.o
/Users/rene/Downloads/Scala-3.0.0.4 2/src/checkpoints/checkpoints.cpp:315:41: error: unknown type name
'scala_dir_usable'
std::ofstream o(scala_dir_usable);
^
/Users/rene/Downloads/Scala-3.0.0.4 2/src/checkpoints/checkpoints.cpp:315:40: warning: parentheses were disambiguated
as a function declaration [-Wvexing-parse]
std::ofstream o(scala_dir_usable);
^~~~~~~~~~~~~~~~~~
/Users/rene/Downloads/Scala-3.0.0.4 2/src/checkpoints/checkpoints.cpp:315:41: note: add a pair of parentheses to
declare a variable
std::ofstream o(scala_dir_usable);
^
(
/Users/rene/Downloads/Scala-3.0.0.4 2/src/checkpoints/checkpoints.cpp:393:22: error: unknown type name
'scala_dir_usable'
std::ofstream o2(scala_dir_usable);
^
/Users/rene/Downloads/Scala-3.0.0.4 2/src/checkpoints/checkpoints.cpp:393:21: warning: parentheses were disambiguated
as a function declaration [-Wvexing-parse]
std::ofstream o2(scala_dir_usable);
^~~~~~~~~~~~~~~~~~
/Users/rene/Downloads/Scala-3.0.0.4 2/src/checkpoints/checkpoints.cpp:393:22: note: add a pair of parentheses to
declare a variable
std::ofstream o2(scala_dir_usable);