DSP Builder on Ubuntu Linux

[Altera_Forum]

Hi all, 

I installed Matlab r2008a, it works fine. I installed Quartus II 9.0, it works fine I have had problems with DSP Builder. The installation completed with no errors and in simulink are now present both "Altera DSP Builder Blockset" and "Altera DSP Builder Advanced Blockset". When I open a new model and I drag any block in from Altera blockset (i.e. gain block) I get the following exception in the matlab command window:  Error in block : untitled/Gain Java exception occurred:  java.lang.UnsatisfiedLinkError: com.altera.dspbuilder.simulation.Block.rename(Ljava/lang/String;)V  at com.altera.dspbuilder.simulation.Block.rename(Native Method)  at com.altera.dspbuilder.simulation.Block.setName(Unknown Source)  at com.altera.dspbuilder.simulation.Mask.init(Unknown Source)  this error issues for every operation I do.  I don't get how to I solve this issue, I checked the file permissions and environment variables. Has anyone experience of DSP_builder on Ubuntu linux? Thank you all in advance!

[Altera_Forum]

SOLVED 

the environment variable QUARTUS_ROOTDIR, even if exported in the .bashrc file, is non set if the installation is executed by the command $sudo ./install --setup_matlab The variable is set if the superuser is invoked by the command "sudo -s" before. In this way the installation command# ./install --setup_matlab works properly.