Adjust freeze.py to work under Linux

scripts/freeze.py

@@ -22,6 +22,7 @@ Builds a standalone executable.
 """
 
 
+import sys
 import platform
 
 from cx_Freeze import setup, Executable
@@ -31,6 +32,8 @@ from scripts.setupdata import setupdata
 
 def get_egl_path():
     """Get the path for PyQt5's libEGL.dll."""
+    if not sys.platform.startswith('win'):
+        return None
     bits = platform.architecture()[0]
     if bits == '32bit':
         return r'C:\Python33_x32\Lib\site-packages\PyQt5\libEGL.dll'
@@ -41,19 +44,24 @@ def get_egl_path():
 
 build_exe_options = {
     'include_files': [
-        (get_egl_path(), 'libEGL.dll'),
         ('qutebrowser/html', 'html'),
     ],
     'include_msvcr': True,
 }
 
+egl_path = get_egl_path()
+if egl_path is not None:
+    build_exe_options['include_files'].append((egl_path, 'libEGL.dll'))
+
 bdist_msi_options = {
     # random GUID generated by uuid.uuid4()
     'upgrade_code': '{a7119e75-4eb7-466c-ae0d-3c0eccb45196}',
     'add_to_path': False,
 }
 
-executable = Executable('qutebrowser/__main__.py', base='Win32GUI',
+base = 'Win32GUI' if sys.platform.startswith('win') else None
+
+executable = Executable('qutebrowser/__main__.py', base=base,
                         targetName='qutebrowser.exe',
                         shortcutName='qutebrowser',
                         shortcutDir='ProgramMenuFolder')