Try another random flag.
@@ -31,7 +31,7 @@ cmake ^
-DCMAKE_INSTALL_PREFIX=%LIBRARY_PREFIX% ^
-DDCGP_BUILD_DCGP=no ^
-DDCGP_BUILD_DCGPY=yes ^
- "-DDCGP_CXX_FLAGS_EXTRA=-D_copysign=copysign;-Dand=&&;-Dnot=!" ^
+ "-DDCGP_CXX_FLAGS_EXTRA=-D_copysign=copysign;/Za" ^
..
cmake --build . -- -v
