sdl: fixed some stupidity i accidently comitted in the sconstruct on the last commit

SConstruct

@@ -12,7 +12,7 @@ opts.AddVariables(
   BoolVariable('NEWPPU',    'Enable new PPU core', 1),
   BoolVariable('CREATE_AVI', 'Enable avi creation support (SDL only)', 1),
   BoolVariable('LOGO', 'Enable a logoscreen when creating avis (SDL only)', '1'),
-  BoolVariable('GTK', 'Enable GTK2 GUI (SDL only)', 0),
+  BoolVariable('GTK', 'Enable GTK2 GUI (SDL only)', 1),
   BoolVariable('GTK3', 'Enable GTK3 GUI (SDL only)', 0),
 )
 
@@ -59,6 +59,16 @@ else:
   if not conf.CheckLib('SDL'):
     print 'Did not find libSDL or SDL.lib, exiting!'
     Exit(1)
+  if env['GTK']:
+    # Add compiler and linker flags from pkg-config
+    env.ParseConfig('pkg-config --cflags --libs gtk+-2.0')
+    env.Append(CPPDEFINES=["_GTK2"])
+    env.Append(CCFLAGS = ["-D_GTK"])
+  if env['GTK3']:
+    # Add compiler and linker flags from pkg-config
+    env.ParseConfig('pkg-config --cflags --libs gtk+-3.0')
+    env.Append(CPPDEFINES=["_GTK3"])
+    env.Append(CCFLAGS = ["-D_GTK"])
 
   ### Lua platform defines
   ### Applies to all files even though only lua needs it, but should be ok

src/drivers/sdl/SConscript

@@ -2,19 +2,8 @@
 # Thanks Antonio Ospite!
 Import('env')
 env.ParseConfig('pkg-config --cflags --libs x11')
-if env['GTK']:
-  # Add compiler and linker flags from pkg-config
-  env.ParseConfig('pkg-config --cflags --libs gtk+-2.0')
-  env.Append(CPPDEFINES=["_GTK2"])
-  env.Append(CCFLAGS = ["-D_GTK"])
-if env['GTK3']:
-# Add compiler and linker flags from pkg-config
-  env.ParseConfig('pkg-config --cflags --libs gtk+-3.0')
-  env.Append(CPPDEFINES=["_GTK3"])
-  env.Append(CCFLAGS = ["-D_GTK"])
 Export('env')
 
-
 my_list =  Split("""
 input.cpp
 config.cpp