@Override
	public String getCompiler() {
		String compiler = null;
		Options pl = getOptions(PROGRAM_INFO);
		compiler = pl.getString(COMPILER, UNKNOWN);
		return compiler == null ? UNKNOWN : compiler;
	}
Initialize program compiler specification.
During a language upgrade this will provide a temporary spec until setLanguage is complete.
@throws CompilerSpecNotFoundException if the compiler spec cannot be found
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/ProgramDB.java