diff --git a/uv.gyp b/uv.gyp
index 1643e4d2..900551ec 100644
--- a/uv.gyp
+++ b/uv.gyp
@@ -1,4 +1,17 @@
 {
+  'target_defaults': {
+    'conditions': [
+      ['OS != "win"', {
+        'defines': [
+          '_LARGEFILE_SOURCE',
+          '_FILE_OFFSET_BITS=64',
+          '_GNU_SOURCE',
+          'EIO_STACKSIZE=262144'
+        ],
+      }],
+    ],
+  },
+
   'targets': [
     {
       'target_name': 'uv',
@@ -171,12 +184,6 @@
             'src/unix/ev/event.h',
           ],
           'include_dirs': [ 'src/unix/ev', ],
-          'defines': [
-            '_LARGEFILE_SOURCE',
-            '_FILE_OFFSET_BITS=64',
-            '_GNU_SOURCE',
-            'EIO_STACKSIZE=262144'
-          ],
           'libraries': [ '-lm' ]
         }],
         [ 'OS=="mac"', {