请高手来解读下面的几行脚本~~~~本人对脚本没任何概念
use strict;use File::Basename;use File::Find;use webkitdirs;use webkitperl::features;use POSIX;sub cMakeArgsFromFeatures();sub checkForJavaSDK();sub formatBuildTime($);my $originalWorkingDirectory = getcwd();chdirWebKit();my $showHelp = 0;my $clean = 0;my $minimal = 0;my $v8 = 0;my $installHeaders;my $installLibs;my $prefixPath;my $makeArgs = "";my $noWebKit2 = 0;my $startTime = time();