$NetBSD: patch-SConscript,v 1.2 2019/05/27 16:07:30 maya Exp $

* Python 3.x support.
* Boost does not maintain Signals anymore (Signals2 does not require linkage).

--- SConscript.orig	2011-12-24 21:46:47.000000000 +0000
+++ SConscript
@@ -77,7 +77,6 @@ class Project:
         self.configure_linuxevdev()
         self.configure_wiimote()
         self.configure_xinput()
-        self.configure_boost()
         self.configure_png()
         self.configure_sdl()
         self.configure_iconv()
@@ -126,12 +125,12 @@ class Project:
     def configure_end(self):
         self.env = self.conf.Finish()
 
-        print "Reports:"
-        print self.reports
+        print("Reports:")
+        print(self.reports)
 
         if not self.fatal_error == "":
-            print "Fatal Errors:"
-            print self.fatal_error
+            print("Fatal Errors:")
+            print(self.fatal_error)
             Exit(1)
 
     def configure_gxx(self): 
@@ -151,7 +150,10 @@ class Project:
             if sys.platform == "darwin":
                 self.conf.env.Append(LINKFLAGS = [ '-framework', 'OpenGL' ])
             else:
-                self.conf.env.Append(LIBS = ['GL'])
+                if self.conf.CheckMyProgram('pkg-config'):
+                    self.conf.env.ParseConfig("pkg-config  --cflags --libs gl")
+                else:
+                    self.conf.env.Append(LIBS = ['GL'])
 
     def configure_linuxevdev(self):
         if not self.env['with_linuxevdev']:
@@ -186,11 +188,6 @@ class Project:
             self.conf.env.Append(optional_sources = ['src/engine/input/xinput/xinput_driver.cpp',
                                                      'src/engine/input/xinput/xinput_device.cpp'])
             
-    def configure_boost(self):
-        if not self.conf.CheckLibWithHeader('boost_signals', 'boost/signals.hpp', 'c++'):
-            if not self.conf.CheckLibWithHeader('boost_signals-mt', 'boost/signals.hpp', 'c++'):
-                self.fatal_error += "  * library 'boost_signals' not found\n"
-
     def configure_png(self):
         if self.conf.CheckMyProgram('pkg-config'):
             self.conf.env.ParseConfig("pkg-config  --cflags --libs libpng | sed 's/-I/-isystem/g'")