win: Add support for VS2015

pylib/gyp/MSVSVersion.py

Index: pylib/gyp/MSVSVersion.py
diff --git a/pylib/gyp/MSVSVersion.py b/pylib/gyp/MSVSVersion.py
index 6f19cfca4c0e0b7a37891fe3d34e5280f5b550f2..92e583fd6e27c75406b9c2d197d3ad73b72cb66f 100644
--- a/pylib/gyp/MSVSVersion.py
+++ b/pylib/gyp/MSVSVersion.py
@@ -225,6 +225,15 @@ def _CreateVersion(name, path, sdk_based=False):
   if path:
     path = os.path.normpath(path)
   versions = {
+      '2015': VisualStudioVersion('2015',
+                                  'Visual Studio 2015',
+                                  solution_version='12.00',
+                                  project_version='14.0',
+                                  flat_sln=False,
+                                  uses_vcxproj=True,
+                                  path=path,
+                                  sdk_based=sdk_based,
+                                  default_toolset='v140'),
       '2013': VisualStudioVersion('2013',
                                   'Visual Studio 2013',
                                   solution_version='13.00',
@@ -334,7 +343,8 @@ def _DetectVisualStudioVersions(versions_to_check, force_express):
       2008(e) - Visual Studio 2008 (9)
       2010(e) - Visual Studio 2010 (10)
       2012(e) - Visual Studio 2012 (11)
-      2013(e) - Visual Studio 2013 (11)
+      2013(e) - Visual Studio 2013 (12)
+      2015    - Visual Studio 2015 (14)
     Where (e) is e for express editions of MSVS and blank otherwise.
   """
   version_to_year = {
@@ -343,6 +353,7 @@ def _DetectVisualStudioVersions(versions_to_check, force_express):
       '10.0': '2010',
       '11.0': '2012',
       '12.0': '2013',
+      '14.0': '2015',
   }
   versions = []
   for version in versions_to_check:
@@ -379,8 +390,9 @@ def _DetectVisualStudioVersions(versions_to_check, force_express):
       if not path:
         continue
       path = _ConvertToCygpath(path)
-      versions.append(_CreateVersion(version_to_year[version] + 'e',
-          os.path.join(path, '..'), sdk_based=True))
+      if version != '14.0':  # There is no Express edition for 2015.
+        versions.append(_CreateVersion(version_to_year[version] + 'e',
+            os.path.join(path, '..'), sdk_based=True))
 
   return versions
 
@@ -397,7 +409,7 @@ def SelectVisualStudioVersion(version='auto', allow_fallback=True):
   if version == 'auto':
     version = os.environ.get('GYP_MSVS_VERSION', 'auto')
   version_map = {
-    'auto': ('12.0', '10.0', '9.0', '8.0', '11.0'),
+    'auto': ('14.0', '12.0', '10.0', '9.0', '8.0', '11.0'),
     '2005': ('8.0',),
     '2005e': ('8.0',),
     '2008': ('9.0',),
@@ -408,6 +420,7 @@ def SelectVisualStudioVersion(version='auto', allow_fallback=True):
     '2012e': ('11.0',),
     '2013': ('12.0',),
     '2013e': ('12.0',),
+    '2015': ('14.0',),
   }
   override_path = os.environ.get('GYP_MSVS_OVERRIDE_PATH')
   if override_path: