#!/usr/bin/perl

use strict;

print "Running on " . `hostname`;
if ($ARGV[0] eq "--clean") {
	my_system("rm -rf linux-3.0.8");
	exit;
}

if ( ! -e "linux-3.0.8.tar.xz") {
	my $return = system("wget -c http://69.55.54.91/linux-3.0.8.tar.xz");
}
if ( ! -d "linux-3.0.8") {
	my_system("tar xfJ linux-3.0.8.tar.xz");
	my_system("sync");
}

chdir "linux-3.0.8";
# system("cp /root/benchmarks/kernel/config-3.0.8 .config");
if ($ARGV[0] eq "--mrproper") {
	my_system("make mrproper");
}

install_standard("make -v", "make");
install_gcc();

exit if $ARGV[0] eq "--prep";

if ($ARGV[0] eq "--bigconfig") {
	my_system("rm .config*");
	my_system("cp /root/benchmarks/kernel/config-3.0.8 .config");
	my_system("yes \"\" |make oldconfig");
} else {
	my_system("make defconfig");
}

my $cpus = `cat /proc/cpuinfo |grep QEMU |wc -l`;
chomp $cpus;
my_system("make -j$cpus");


sub install_gcc {
	my $return = system("gcc --version");
	print "gcc RETURN: $return\n";
	
	if ($return eq "-1") {
		if (-e "/etc/gentoo-release") {
			system "emerge gcc";
		} elsif (-e "/etc/redhat-release") {
			my @parts = split " ", `cat /etc/redhat-release`;
			if ($parts[2] eq "5.6") {
				my $arch = `uname -m`;
				chomp $arch;
				if ($arch eq "x86_64") {
					system "yum install gcc -y";
				} else {
					system "yum install gcc -y";
				}
			}
			system "yum install gcc -y";
		} else {
			system "apt-get -y install gcc";
		}
	} else {
		return;
	}
	system "gcc --version";
}

sub install_standard {
	my ($cmd, $name) = @_;
	my $return = system($cmd);
	print "gcc RETURN: $return\n";
	
	if ($return eq "-1") {
		if (-e "/etc/gentoo-release") {
			system "emerge $name";
		} elsif (-e "/etc/redhat-release") {
			my @parts = split " ", `cat /etc/redhat-release`;
			if ($parts[2] eq "5.6") {
				my $arch = `uname -m`;
				chomp $arch;
				if ($arch eq "x86_64") {
					system "yum install $name -y";
				} else {
					system "yum install $name -y";
				}
			}
			system "yum install $name -y";
		} else {
			system "apt-get -y install $name";
		}
	} else {
		return;
	}
	system $cmd;
}

sub my_system {
	print "RUN: @_\n";
	system "@_";
}