Step 1. (if the archive name you downloader ends with .zip)
Change to your project directory (say, projects/), and copy
the project archive (bk_ble.tar.zip) into it. Now extract the
files from the archive using

~$ tar xzvf bk_ble.tar.zip

or Step 1. (if the archive name you downloader ends with .bz2)
Change to your project directory (say, projects/), and copy
the project archive (bk_ble.tar.bz2) into it. Now extract the
files from the archive using

~$ tar xjvf bk_ble.tar.bz2

Step 2. Now change to the bk_ble/ directory. Finally, run

~$ make sdk_install

This will download Beken's code, extract the toolchain and
the SDK, and apply the patches needed to make the project
compile.