How to build OpenSMILE in Ubuntu?

I downloaded openSMILE 2.1.0, and followed the instructions :

Build the core from source on Linux: run the script buildStandalone.sh (requires automake and autoconf and build-essentials - gcc, g++, make, libtool - to be installed),

I installed the relevant packages, gave permission to buildStandalone.sh as executable, and executed it from the terminal. The output is :

me@me-EasyNote-TM85:~$ '/home/me/Desktop/openSMILE-2.1.0/buildStandalone.sh' 
chmod: cannot access ‘configure’: No such file or directory
chmod: cannot access ‘autogen.sh’: No such file or directory
/home/me/Desktop/openSMILE-2.1.0/buildStandalone.sh: line 33: ./autogen.sh: No such file or directory
/home/me/Desktop/openSMILE-2.1.0/buildStandalone.sh: line 34: ./autogen.sh: No such file or directory
./configure --prefix=/home/me/inst --enable-static --enable-shared=no
/home/me/Desktop/openSMILE-2.1.0/buildStandalone.sh: line 46: ./configure: No such file or directory
failed to configure openSMILE!

What is the problem and how can I solve it to proceed building OpenSMILE?

Thanks for any help!