zabija@zabija:~$ cd '/home/zabija/Desktop/eth32-privext' 
zabija@zabija:~/Desktop/eth32-privext$ scons PRIV=1
scons: Reading SConscript files ...
Package libelf was not found in the pkg-config search path.
Perhaps you should add the directory containing `libelf.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libelf' found
<type 'exceptions.OSError'>: 'pkg-config --cflags libelf' exited 1:
  File "/home/zabija/Desktop/eth32-privext/SConstruct", line 26:
    env.MergeFlags('!pkg-config --cflags libelf')
  File "/usr/lib/scons/SCons/Environment.py", line 654:
    args = self.ParseFlags(args)
  File "/usr/lib/scons/SCons/Environment.py", line 643:
    do_parse(arg, do_parse)
  File "/usr/lib/scons/SCons/Environment.py", line 531:
    arg = self.backtick(arg[1:])
  File "/usr/lib/scons/SCons/Environment.py", line 468:
    raise OSError("'%s' exited %s" % (command, status))
zabija@zabija:~/Desktop/eth32-privext$