Redis need tcl 8.5 or newer

hadoop@stormspark:~/workspace/redis2.6.13/src$ make test
You need tcl 8.5 or newer in order to run the Redis test
make: *** [test] Error 

wget http://downloads.sourceforge.net/tcl/tcl8.6.1-src.tar.gz 
sudo tar xzvf tcl8.6.1-src.tar.gz  -C /usr/local/ 
cd  /usr/local/tcl8.6.1/unix/ 
sudo ./configure 
sudo make 
sudo make install