when checking for windows check sys.platform starts with "win" rather then '== "win32"' & avoid importing platform.

also add some notes to CMake options.

CMakeLists.txt

@@ -67,12 +67,12 @@ include(build_files/cmake/macros.cmake)
 get_blender_version()
 
 # Blender internal features
-option(WITH_INTERNATIONAL "Enable I18N   (International fonts and text)" ON)
-option(WITH_PYTHON        "Enable Embedded Python API" ON)
-option(WITH_PYTHON_SAFETY "Enable internal API error checking to track invalid data to prevent crash on access (at the expense of some effeciency)." OFF)
-option(WITH_PYTHON_MODULE "Enable building as a python module (experemental)" OFF)
-option(WITH_BUILDINFO     "Include extra build details" ON)
-option(WITH_IK_ITASC      "Enable ITASC IK solver" ON)
+option(WITH_INTERNATIONAL "Enable I18N (International fonts and text)" ON)
+option(WITH_PYTHON        "Enable Embedded Python API  (only disable for development)" ON)
+option(WITH_PYTHON_SAFETY "Enable internal API error checking to track invalid data to prevent crash on access (at the expense of some effeciency, only enable for development)." OFF)
+option(WITH_PYTHON_MODULE "Enable building as a python module (experemental, only enable for development)" OFF)
+option(WITH_BUILDINFO     "Include extra build details (only disable for development & faster builds)" ON)
+option(WITH_IK_ITASC      "Enable ITASC IK solver (only disable for development & for incompatible C++ compilers)" ON)
 option(WITH_FFTW3         "Enable FFTW3 support (Used for smoke and audio effects)" OFF)
 option(WITH_BULLET        "Enable Bullet (Physics Engine)" ON)
 option(WITH_GAMEENGINE    "Enable Game Engine" ON)
@@ -132,7 +132,7 @@ endif()
 option(WITH_PYTHON_INSTALL       "Copy system python into the blender install folder" ON)
 
 # Debug
-option(WITH_CXX_GUARDEDALLOC "Enable GuardedAlloc for C++ memory allocation tracking" OFF)
+option(WITH_CXX_GUARDEDALLOC "Enable GuardedAlloc for C++ memory allocation tracking (only enable for development)" OFF)
 mark_as_advanced(WITH_CXX_GUARDEDALLOC)
 
 option(WITH_ASSERT_ABORT "Call abort() when raising an assertion through BLI_assert()" OFF)

release/scripts/op/image.py

@@ -31,25 +31,20 @@ class EditExternally(bpy.types.Operator):
     filepath = StringProperty(name="File Path", description="Path to an image file", maxlen=1024, default="")
 
     def _editor_guess(self, context):
-        import platform
-        try:
-            system = platform.system()
-        except UnicodeDecodeError:
-            import sys
-            system = sys.platform
+        import sys
 
         image_editor = context.user_preferences.filepaths.image_editor
 
         # use image editor in the preferences when available.
         if not image_editor:
-            if system in ('Windows', 'win32'):
+            if sys.platform[:3] == "win":
                 image_editor = ["start"]  # not tested!
-            elif system == 'Darwin':
+            elif sys.platform == "darwin":
                 image_editor = ["open"]
             else:
                 image_editor = ["gimp"]
         else:
-            if system == 'Darwin':
+            if sys.platform == "darwin":
                 # blender file selector treats .app as a folder
                 # and will include a trailing backslash, so we strip it.
                 image_editor.rstrip('\\')
@@ -65,7 +60,7 @@ class EditExternally(bpy.types.Operator):
         filepath = bpy.path.abspath(self.filepath)
 
         if not os.path.exists(filepath):
-            self.report('ERROR', "Image path '%s' not found." % filepath)
+            self.report('ERROR', "Image path %r not found." % filepath)
             return {'CANCELLED'}
 
         cmd = self._editor_guess(context) + [filepath]

release/scripts/op/screen_play_rendered_anim.py

@@ -29,19 +29,14 @@ import os
 
 
 def guess_player_path(preset):
-    import platform
-    try:
-        system = platform.system()
-    except UnicodeDecodeError:
-        import sys
-        system = sys.platform
+    import sys
 
     if preset == 'BLENDER24':
         player_path = "blender"
 
-        if system == 'Darwin':
+        if sys.platform == "darwin":
             test_path = "/Applications/blender 2.49.app/Contents/MacOS/blender"
-        elif system in ('Windows', 'win32'):
+        elif sys.platform[:3] == "win":
             test_path = "/Program Files/Blender Foundation/Blender/blender.exe"
 
             if os.path.exists(test_path):
@@ -50,7 +45,8 @@ def guess_player_path(preset):
     elif preset == 'DJV':
         player_path = "djv_view"
 
-        if system == 'Darwin':
+        if sys.platform == "darwin":
+            # TODO, crummy supporting only 1 version, could find the newest installed version
             test_path = '/Applications/djv-0.8.2.app/Contents/Resources/bin/djv_view'
             if os.path.exists(test_path):
                 player_path = test_path

release/scripts/op/wm.py

@@ -575,7 +575,7 @@ class WM_OT_path_open(bpy.types.Operator):
             self.report({'ERROR'}, "File '%s' not found" % filepath)
             return {'CANCELLED'}
 
-        if sys.platform == 'win32':
+        if sys.platform[:3] == "win":
             subprocess.Popen(['start', filepath], shell=True)
         elif sys.platform == 'darwin':
             subprocess.Popen(['open', filepath])

release/scripts/ui/space_info.py

@@ -364,7 +364,7 @@ class INFO_MT_help(bpy.types.Menu):
         layout.operator("help.operator_cheat_sheet", icon='TEXT')
         layout.operator("wm.sysinfo", icon='TEXT')
         layout.separator()
-        if sys.platform == "win32":
+        if sys.platform[:3] == "win":
             layout.operator("wm.toggle_console", icon='CONSOLE')
             layout.separator()
         layout.operator("anim.update_data_paths", text="FCurve/Driver 2.54 fix", icon='HELP')