Tidy up linux/wscript and make it ready for unification. See issue #164.

linux/wscript

 #! /usr/bin/env python
 # encoding: utf-8
 
-def create_jack_driver_obj(bld, target, sources, uselib = None):
-    driver = bld(features = ['c', 'cxx', 'cxxshlib', 'cshlib'])
+def create_jack_driver_obj(bld, **kw):
+    driver = bld(
+        features = ['c', 'cxx', 'cxxshlib', 'cshlib'],
+        defines = ['HAVE_CONFIG_H', 'SERVER_SIDE'],
+        includes = ['../linux',
+                    '../posix',
+                    '../common',
+                    '../common/jack',
+                    '../dbus',
+                    '../'],
+        install_path = '${ADDON_DIR}/',
+        **kw)
     driver.env['cxxshlib_PATTERN'] = 'jack_%s.so'
-
-    driver.defines = ['HAVE_CONFIG_H','SERVER_SIDE']
-
-    driver.includes = ['.', '../linux', '../posix', '../common', '../common/jack', '../dbus', '../']
-    driver.target = target
-    driver.source = sources
-    driver.install_path = '${ADDON_DIR}/'
-    driver.use = []
-    if uselib:
-        driver.use += uselib
     return driver
 
 def build(bld):
     if bld.env['BUILD_JACKD'] == True:
-        jackd = bld(features = ['cxx', 'cxxprogram'])
-        jackd.includes = ['../linux', '../posix', '../common/jack', '../common', '../dbus', '../']
-        jackd.defines = ['HAVE_CONFIG_H','SERVER_SIDE']
-        jackd.source = ['../common/Jackdmp.cpp']
-        jackd.use = ['serverlib']
+        jackd = bld(
+            features = ['cxx', 'cxxprogram'],
+            defines = ['HAVE_CONFIG_H','SERVER_SIDE'],
+            includes = ['../linux',
+                        '../posix',
+                        '../common/jack',
+                        '../common',
+                        '../dbus',
+                        '../'],
+            target = 'jackd',
+            source = ['../common/Jackdmp.cpp'],
+            use = ['serverlib', 'DL', 'PTHREAD', 'RT', 'M', 'STDC++'])
+
         if bld.env['IS_LINUX'] and bld.env['BUILD_JACKDBUS']:
             jackd.source += ['../dbus/reserve.c', '../dbus/audio_reserve.c']
-            jackd.use += ['PTHREAD', 'DL', 'RT', 'M', 'STDC++', 'DBUS-1']
-        else:
-            jackd.use += ['PTHREAD', 'DL', 'RT', 'M', 'STDC++']
-        jackd.target = 'jackd'
+            jackd.use += ['DBUS-1']
 
-    create_jack_driver_obj(bld, 'dummy', '../common/JackDummyDriver.cpp')
+    create_jack_driver_obj(
+        bld,
+        target = 'dummy',
+        source = '../common/JackDummyDriver.cpp')
 
     alsa_driver_src = [
                        'alsa/JackAlsaDriver.cpp',
@@ -63,26 +71,58 @@ def build(bld):
 
     iio_driver_src = ['iio/JackIIODriver.cpp']
 
-    if bld.env['BUILD_DRIVER_ALSA'] == True:
-        create_jack_driver_obj(bld, 'alsa', alsa_driver_src, ["ALSA"])
-        create_jack_driver_obj(bld, 'alsarawmidi', alsarawmidi_driver_src,
-                               ["ALSA"])
-
-    if bld.env['BUILD_DRIVER_FREEBOB'] == True:
-        create_jack_driver_obj(bld, 'freebob', 'freebob/JackFreebobDriver.cpp', ["LIBFREEBOB"])
-
-    if bld.env['BUILD_DRIVER_FFADO'] == True:
-        create_jack_driver_obj(bld, 'firewire', ffado_driver_src, ["LIBFFADO"])
-
-    if bld.env['BUILD_DRIVER_IIO'] == True:
-        create_jack_driver_obj(bld, 'iio', iio_driver_src, ["GTKIOSTREAM", "EIGEN3"])
-
-    create_jack_driver_obj(bld, 'net', '../common/JackNetDriver.cpp')
-
-    create_jack_driver_obj(bld, 'loopback', '../common/JackLoopbackDriver.cpp')
-
-    create_jack_driver_obj(bld, 'netone', [ '../common/JackNetOneDriver.cpp',
-                                            '../common/netjack.c',
-                                            '../common/netjack_packet.c' ], ["SAMPLERATE", "CELT"])
-
-    create_jack_driver_obj(bld, 'proxy', '../common/JackProxyDriver.cpp')
+    if bld.env['BUILD_DRIVER_ALSA']:
+        create_jack_driver_obj(
+            bld,
+            target = 'alsa',
+            source = alsa_driver_src,
+            use = ['ALSA'])
+        create_jack_driver_obj(
+            bld,
+            target = 'alsarawmidi',
+            source = alsarawmidi_driver_src,
+            use = ['ALSA'])
+
+    if bld.env['BUILD_DRIVER_FREEBOB']:
+        create_jack_driver_obj(
+            bld,
+            target = 'freebob',
+            source = 'freebob/JackFreebobDriver.cpp',
+            use = ['LIBFREEBOB'])
+
+    if bld.env['BUILD_DRIVER_FFADO']:
+        create_jack_driver_obj(
+            bld,
+            target = 'firewire',
+            source = ffado_driver_src,
+            use = ['LIBFFADO'])
+
+    if bld.env['BUILD_DRIVER_IIO']:
+        create_jack_driver_obj(
+            bld,
+            target = 'iio',
+            source = iio_driver_src,
+            use = ['GTKIOSTREAM', 'EIGEN3'])
+
+    create_jack_driver_obj(
+        bld,
+        target = 'net',
+        source = '../common/JackNetDriver.cpp')
+
+    create_jack_driver_obj(
+        bld,
+        target = 'loopback',
+        source = '../common/JackLoopbackDriver.cpp')
+
+    create_jack_driver_obj(
+        bld,
+        target = 'netone',
+        source = ['../common/JackNetOneDriver.cpp',
+                  '../common/netjack.c',
+                  '../common/netjack_packet.c'],
+        use = ['SAMPLERATE', 'CELT'])
+
+    create_jack_driver_obj(
+        bld,
+        target = 'proxy',
+        source = '../common/JackProxyDriver.cpp')