add version command line argument to zmc

src/zmc.cpp

@@ -45,6 +45,7 @@ void Usage()
 	fprintf( stderr, "  -f, --file <file_path>                   : For local images, jpg file to access.\n" );
 	fprintf( stderr, "  -m, --monitor <monitor_id>               : For sources associated with a single monitor\n" );
 	fprintf( stderr, "  -h, --help                               : This screen\n" );
+	fprintf( stderr, "  -v, --version                            : Report the installed version of ZoneMinder\n" );
 	exit( 0 );
 }
 
@@ -71,6 +72,7 @@ int main( int argc, char *argv[] )
 	 	{"file", 1, 0, 'f'},
 		{"monitor", 1, 0, 'm'},
 		{"help", 0, 0, 'h'},
+		{"version", 0, 0, 'v'},
 		{0, 0, 0, 0}
 	};
 
@@ -78,7 +80,7 @@ int main( int argc, char *argv[] )
 	{
 		int option_index = 0;
 
-		int c = getopt_long (argc, argv, "d:H:P:p:f:m:h", long_options, &option_index);
+		int c = getopt_long (argc, argv, "d:H:P:p:f:m:h:v", long_options, &option_index);
 		if (c == -1)
 		{
 			break;
@@ -108,6 +110,9 @@ int main( int argc, char *argv[] )
 			case '?':
 				Usage();
 				break;
+			case 'v':
+				cout << ZM_VERSION << "\n";
+				exit(0);
 			default:
 				//fprintf( stderr, "?? getopt returned character code 0%o ??\n", c );
 				break;