Add options to project.py to specify include and library directories (#493)

Author: n-elie

project.py

@@ -1,4 +1,5 @@
 import os
+import sys
 
 from pyqtbuild import PyQtBindings, PyQtProject
 from sipbuild import Option
@@ -16,12 +17,37 @@ def __init__(self, project):
 		""" Initialise the bindings. """
 
 		super().__init__(project, 'ads')
+		
+	def get_options(self):
+		"""Our custom options that a user can pass to sip-build."""
+		options = super().get_options()
+		options += [
+		    Option('ads_incdir',
+				   help='the directory containing the ads header file',
+				   metavar='DIR'),
+		    Option('ads_libdir',
+				   help='the directory containing the ads library',
+				   metavar='DIR'),
+		    Option('ads_lib',
+				   help='the ads library',
+				   metavar='LIB'),
+		]
+		return options
 
 	def apply_user_defaults(self, tool):
 		""" Set default values for user options that haven't been set yet. """
-
+		
 		resource_file = os.path.join(self.project.root_dir,'src','ads.qrc')
 		print("Adding resource file to qmake project: ", resource_file)
 		self.builder_settings.append('RESOURCES += '+resource_file)
 
+		if self.ads_lib is not None:
+		    self.libraries.append(self.ads_lib)
+		    
+		if self.ads_incdir is not None:
+		    self.include_dirs.append(self.ads_incdir)
+		    
+		if self.ads_libdir is not None:
+		    self.library_dirs.append(self.ads_libdir)
+		
 		super().apply_user_defaults(tool)