diff -rupN libffado-2.4.1.org/SConstruct libffado-2.4.1/SConstruct

--- libffado-2.4.1.org/SConstruct

+++ libffado-2.4.1/SConstruct

@@ -405,7 +405,7 @@ if env['BUILD_MIXER'] != 'false':

     if  (    conf.CheckForApp( 'which pyuic4' ) \

          and conf.CheckForPyModule( 'PyQt4' ) \

          and conf.CheckForPyModule( 'dbus.mainloop.qt' )) \

-     or (    conf.CheckForApp( 'which pyuic5' ) \

+     or (    conf.CheckForApp( 'which pyuic5.py3' ) \

          and conf.CheckForPyModule( 'PyQt5' ) \

          and conf.CheckForPyModule( 'dbus.mainloop.pyqt5' )):

         env['BUILD_MIXER'] = 'true'

@@ -719,8 +719,8 @@ def is_userspace_32bit(cpuinfo):

         # /bin/mount:     file format elf64-x86-64

         # or like this:

         # /bin/mount:     file format elf32-powerpc

-        for line in x.split(b'\n'):

-            line = line.strip().decode()

+        for line in x.split('\n'):

+            line = line.strip()

             if line.startswith(real_exe):

                 x, fmt = line.rsplit(None, 1)

                 answer = 'elf32' in fmt

diff -rupN libffado-2.4.1.org/support/mixer-qt4/SConscript libffado-2.4.1/support/mixer-qt4/SConscript

--- libffado-2.4.1.org/support/mixer-qt4/SConscript

+++ libffado-2.4.1/support/mixer-qt4/SConscript

@@ -29,16 +29,13 @@ Import( 'env' )

 if env['BUILD_MIXER'] == 'true':

     e = env.Clone()

-    def findfiles( arg, dirname, names ):

-        for name in names:

+    pythonfiles = [ 'ffado/config.py' ]

+    for dirpath, dirnames, files in os.walk( "ffado"):

+        for name in files:

             if name.startswith("."):

-                names.remove(name)

-        for name in names:

+                continue

             if '.pyc' not in name and '.in' not in name:

-                arg.append( os.path.join( dirname, name ) )

-

-    pythonfiles = [ 'ffado/config.py' ]

-    os.path.walk( "ffado", findfiles, pythonfiles )

+                pythonfiles.append(os.path.join(dirpath, name))

     e.ScanReplace( "ffado/config.py.in" )

     e.Depends( "ffado/config.py", "#/SConstruct" )