Invoke QB64 compiler from commandline

[RhoSigma]

@RhoSigma, If I command line compile a bunch of bas files using -z "only" (To test).  Do I need to include -p on the line to ensure clean compiling ?

No, for the -z switch you definitly don't need to do that. For the -c and -x switches however, there are usually just two scenarios where you need to "purge":
1. If you have changed anything in the QB64 source or internal folders, and now try to let QB64 recompile itself with your changes (ie. compiling qb64.bas)
2. If you try to compile the SAME program as right before, but using different C/C++ compiler switches (-s option) than before