open INFILE, "<$ARGV[1]"; $build = ; close INFILE; chop $build; open OUTFILE, ">$ARGV[0]" || die; print OUTFILE "/* THIS IS A GENERATED FILE!\n*\n"; print OUTFILE "* See mozilla/config/build_header.pl */\n*\n*/"; print OUTFILE "\n\#define NS_BUILD_ID " . $build . "\n"; close OUTFILE;