Allow files with the same basename to exist within the same project.

pylib/gyp/input.py

Index: pylib/gyp/input.py
===================================================================
--- pylib/gyp/input.py	(revision 1589)
+++ pylib/gyp/input.py	(working copy)
@@ -2326,10 +2326,18 @@
                                                              target_type))
 
 
-def ValidateSourcesInTarget(target, target_dict, build_file):
+def ValidateSourcesInTarget(target, target_dict, build_file, variables):
+
+  # For MSVS versions <= 2008, files with duplicate basenames are not allowed.
+  # For all other build configs, duplicates are OK.

[bradn, 2013/03/06 18:47:13]

Theres a bunch of version plumbing, this would seem to ignore that. Look in
MSVSVesion.py

Also, I believe the idea around this was to discourage folks from producing gyp
files that won't work with all the generators. In what context are you hoping to
use this?

+  if variables.get('GENERATOR') != 'msvs' or \
+      int(variables.get('MSVS_VERSION')) > '2008':
+    return
+
   # TODO: Check if MSVC allows this for loadable_module targets.
   if target_dict.get('type', None) not in ('static_library', 'shared_library'):
     return
+
   sources = target_dict.get('sources', [])
   basenames = {}
   for source in sources:
@@ -2662,10 +2670,7 @@
     target_dict = targets[target]
     build_file = gyp.common.BuildFile(target)
     ValidateTargetType(target, target_dict)
-    # TODO(thakis): Get vpx_scale/arm/scalesystemdependent.c to be renamed to
-    #               scalesystemdependent_arm_additions.c or similar.
-    if 'arm' not in variables.get('target_arch', ''):
-      ValidateSourcesInTarget(target, target_dict, build_file)
+    ValidateSourcesInTarget(target, target_dict, build_file, variables)
     ValidateRulesInTarget(target, target_dict, extra_sources_for_rules)
     ValidateRunAsInTarget(target, target_dict, build_file)
     ValidateActionsInTarget(target, target_dict, build_file)