[sql] uClibc doesn't provide malloc_usable_size().

third_party/sqlite/sqlite.gyp

 # 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.
 
 {
   'variables': {
     'use_system_sqlite%': 0,
     'required_sqlite_version': '3.6.1',
   },
   'target_defaults': {
@@ skipping 61 matching lines @@
             # Use pread/pwrite directly rather than emulating them.
             'USE_PREAD=1',
           ],
         }],
         ['OS == "linux" or OS == "android"', {
           'defines': [
             # Linux provides fdatasync(), a faster equivalent of fsync().
             'fdatasync=fdatasync',
           ],
         }],
-        # SQLite wants to track malloc sizes.  On OSX it uses malloc_size(), on
-        # Windows _msize(), elsewhere it handles it manually by enlarging the
-        # malloc and injecting a field.  Enable malloc_usable_size() for Linux.
-        # NOTE(shess): Android does _not_ export malloc_usable_size().
+        # Pull in config.h on Linux.  This allows use of preprocessor macros
+        # which are not available to the build config.
         ['OS == "linux"', {
           'defines': [
-            'HAVE_MALLOC_H',
-            'HAVE_MALLOC_USABLE_SIZE',
+            '_HAVE_SQLITE_CONFIG_H',
           ],
         }],
         ['use_system_sqlite', {
           'type': 'none',
           'direct_dependent_settings': {
             'defines': [
               'USE_SYSTEM_SQLITE',
             ],
           },
 
@@ skipping 29 matching lines @@
                   '<!@(pkg-config --libs-only-l sqlite3)',
                 ],
               },
             }],
           ],
         }, { # !use_system_sqlite
           # "sqlite3" can cause conflicts with the system library.
           'product_name': 'chromium_sqlite3',
           'type': '<(component)',
           'sources': [
+            'amalgamation/config.h',
             'amalgamation/sqlite3.h',
             'amalgamation/sqlite3.c',
           ],
           'variables': {
             'clang_warning_flags': [
               # sqlite contains a few functions that are unused, at least on
               # Windows with Chromium's sqlite patches applied
               # (interiorCursorEOF fts3EvalDeferredPhrase
               # fts3EvalSelectDeferred sqlite3Fts3InitHashTable
               # sqlite3Fts3InitTok).
@@ skipping 100 matching lines @@
             'SQLITE_CORE',
           ],
           'sources': [
             'src/ext/icu/icu.c',
           ],
         },
       ],
     }],
   ],
 }