Laying the groundwork for targeting WinRT.

build/toolchain/win/setup_toolchain.py

Index: build/toolchain/win/setup_toolchain.py
diff --git a/build/toolchain/win/setup_toolchain.py b/build/toolchain/win/setup_toolchain.py
index bc9bd1e7b43bf6fe65f5c34f36ac37aa71442c25..3000445f10b7a64c4253faa60f23a91dfe99a467 100644
--- a/build/toolchain/win/setup_toolchain.py
+++ b/build/toolchain/win/setup_toolchain.py
@@ -146,6 +146,13 @@ def main():
     with open('environment.' + cpu, 'wb') as f:
       f.write(env_block)
 
+    # Create a store app version of the environment.
+    env['LIB']     = env['LIB']    .replace(r'\VC\LIB', r'\VC\LIB\STORE')
+    env['LIBPATH'] = env['LIBPATH'].replace(r'\VC\LIB', r'\VC\LIB\STORE')
+    env_block = _FormatAsEnvironmentBlock(env)
+    with open('environment.winrt_' + cpu, 'wb') as f:
+        f.write(env_block)
+
   assert vc_bin_dir
   print 'vc_bin_dir = "%s"' % vc_bin_dir