code: public final String getKey() {
      String tempLinkerName = null;
      if (this.linkerName == null) {
        tempLinkerName = "";
      } else if (this.linkerName.equals("g++")) {
        tempLinkerName = ".gpp";
      } else {
        tempLinkerName = "." + this.linkerName;
      }
  
      return this.architecture + (this.os == null ? "" : "." + this.os + tempLinkerName);
    }
docs: Returns an AOL key (arch.os.linker) to search in the properties files.
  
  @return dot separated AOL