allow unofficial builds with DCHECK and DLOG disabled

base/logging.h

 // Copyright (c) 2012 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.
 
 #ifndef BASE_LOGGING_H_
 #define BASE_LOGGING_H_
 
 #include <cassert>
 #include <string>
 #include <cstring>
@@ skipping 429 matching lines @@
 // for each platform.
 #define PLOG_STREAM(severity) LOG_ERRNO_STREAM(severity)
 #endif
 
 #define PLOG(severity)                                          \
   LAZY_STREAM(PLOG_STREAM(severity), LOG_IS_ON(severity))
 
 #define PLOG_IF(severity, condition) \
   LAZY_STREAM(PLOG_STREAM(severity), LOG_IS_ON(severity) && (condition))
 
-#if defined(OFFICIAL_BUILD) && defined(NDEBUG)
+#if !defined(NDEBUG)
+// Debug builds always include DCHECK and DLOG.
+#undef LOGGING_IS_OFFICIAL_BUILD
+#define LOGGING_IS_OFFICIAL_BUILD 0
+#elif defined(OFFICIAL_BUILD)
+// Official release builds always disable and remove DCHECK and DLOG.
+#undef LOGGING_IS_OFFICIAL_BUILD
 #define LOGGING_IS_OFFICIAL_BUILD 1
-#else
+#elif !defined(LOGGING_IS_OFFICIAL_BUILD)
+// Unless otherwise specified, unofficial release builds include
+// DCHECK and DLOG.
 #define LOGGING_IS_OFFICIAL_BUILD 0
 #endif
 
 // The actual stream used isn't important.
 #define EAT_STREAM_PARAMETERS                                           \
   true ? (void) 0 : ::logging::LogMessageVoidify() & LOG_STREAM(FATAL)
 
 // CHECK dies with a fatal error if condition is not true.  It is *not*
 // controlled by NDEBUG, so the check will be executed regardless of
 // compilation mode.
@@ skipping 520 matching lines @@
 #elif NOTIMPLEMENTED_POLICY == 5
 #define NOTIMPLEMENTED() do {\
   static bool logged_once = false;\
   LOG_IF(ERROR, !logged_once) << NOTIMPLEMENTED_MSG;\
   logged_once = true;\
 } while(0);\
 EAT_STREAM_PARAMETERS
 #endif
 
 #endif  // BASE_LOGGING_H_