Relanding precompiled header support for VS 2008, now enabled for

build/win_precompile.gypi

 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Include this file to make targets in your .gyp use the default
-# precompiled header on Windows.
+# precompiled header on Windows, in debug builds only as the official
+# builders blow up (out of memory) if precompiled headers are used for
+# release builds.
 
 {
   'conditions': [
-    # Restricted to VS 2010 until GYP also supports suppressing
-    # precompiled headers on .c files in VS 2008.
-    ['OS=="win" and (MSVS_VERSION=="2010" or MSVS_VERSION=="2010e")', {
-      'target_defaults': {
-        'msvs_precompiled_header': '<(DEPTH)/build/precompile.h',
-        'msvs_precompiled_source': '<(DEPTH)/build/precompile.cc',
-        'sources': ['<(DEPTH)/build/precompile.cc'],
-      },
-    }],
+    ['OS=="win"', {
+        'target_defaults': {
+          'configurations': {
+            'Debug': {
+              'msvs_precompiled_header': '<(DEPTH)/build/precompile.h',
+              'msvs_precompiled_source': '<(DEPTH)/build/precompile.cc',
+            },
+          },
+
+          # This can't go into the 'Debug' configuration, so even
+          # 'Release' gets the source file, but it contains nothing
+          # but comments so shouldn't have an effect there (the
+          # msvs_precompiled_header directive above, that only the
+          # Debug configuration gets, is what forces the include of
+          # the precompiled header file in all source files).

[jeanluc1, 2011/09/20 16:54:25]

That's one heck of a long sentence that's hard to parse. Perhaps something like:

Sources can't be specified inside the 'Debug' configuration.   Since
precompile.cc only contains comments, it won't have any effect for 'Release'
builds.  The usage of precompiled headers is triggered only by the
'msvs_precompiled_header', found in the 'Debug' configuration above.

[Jói, 2011/09/20 21:44:06]

Switched to just the following:

  # Sources can't be specified inside the 'Debug'
  # configuration. Since precompile.cc only contains
  # comments, it won't have any effect for 'Release' builds.

+          'sources': ['<(DEPTH)/build/precompile.cc'],
+        }
+      }],
   ],
 }