There are two installation packages. If you are going to perform
the installation on Ubuntu 18.04 or above, use the 
Basler_blaze_SDK-4.0.0.6-efd9603a-Linux_x86_64.tar.gz archive.
Otherwise, use the Basler_blaze_SDK-4.0.0.6-efd9603a-Linux_x86_64_no_viewer.tar.gz
archive.
The SDK in the "no_viewer" archive is supported for Ubuntu 16.04 or above, but
doesn't include the blaze Viewer tool. The "no_viewer" SDK may run on several
other Linux distributions if they provide libstdc++6.0.21 or above.