* Download the [[https://www.xilinx.com/support/download.html|Vivado Web Pack]]
  * run this script, but it has bug in the configure script.
     * bash Xilinx_Vivado_SDK_2015.1_0428_1_Lin64.bin --confirm
     * If you see this error <code>
ERROR: This installation is not supported on 32 bit platforms.
The program './xsetup' returned an error code (1)
</code>
       * About to extract 20 KB in /tmp/selfgz1983114932 ... Proceed ? [Y/n] "This random string will be different each time"
       * gvim /tmp/selfgz1983114932/xsetup
       * search for <code>
       echo "ERROR: This installation is not supported on 32 bit platforms."
       exit 1;
</code>
       * replace with <code>
       echo "ERROR: This installation is not supported on 32 bit platforms."
       #exit 1;
</code>
    * continue