Define _DEBUG

adblockplus.gyp

 {
   'includes': ['defaults.gypi'],
 
   'variables': {
     'build_type%': 'devbuild',
     'build_version%': '',
     'shared_files': [
       'src/shared/AutoHandle.cpp',
       'src/shared/Communication.cpp',
       'src/shared/Dictionary.cpp',
@@ skipping 100 matching lines @@
       '-lshell32',
     ],
     'configurations': {
       # 'libraries' is not allowed under 'configurations' :-(
       'Debug': {
         'msvs_settings': {
           'VCLinkerTool': {
             'AdditionalDependencies': ['atlsd.lib'],
           },
         },
+        'defines': ['_DEBUG'],

[Wladimir Palant, 2013/07/09 14:47:27]

That's not really ABP-specific - would belong into defaults.gypi. But it's
actually already defined there and I've seen it in the generated projects... How
did you check that it isn't defined?

       },
       'Release': {
         'msvs_settings': {
           'VCLinkerTool': {
             'AdditionalDependencies': ['atls.lib'],
           },
         },
       },
     },
     'msvs_settings': {
@@ skipping 35 matching lines @@
       'libraries': ['-ladvapi32', '-lshell32', '-lole32'],
     },
     'msvs_settings': {
       'VCLinkerTool': {
         'SubSystem': '1',   # Console
         'EntryPointSymbol': 'mainCRTStartup',
       },
     },
   }]
 }