src/platform-linux.cc in v8_base now seems to need '-lrt' for

clock_gettime().  Add it to link_settings, and add the
right export_dependent_settings to propagate it through
the hierarchy appropriately.
Review URL: http://codereview.chromium.org/53057

git-svn-id: http://src.chromium.org/svn/trunk/src/build@12468 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

temp_gyp/v8.gyp

@@ -337,6 +337,12 @@
       'conditions': [
         ['OS=="linux"',
           {
+            'link_settings': {
+              'libraries': [
+                # Needed for clock_gettime() used by src/platform-linux.cc.
+                '-lrt',
+              ],
+            },
             'sources/': [
               ['include', 'src/platform-linux\\.cc$'],
               ['include', 'src/platform-posix\\.cc$']
@@ -379,6 +385,9 @@
         '<(SHARED_INTERMEDIATE_DIR)/v8/libraries.cc',
         '../../v8/src/snapshot-empty.cc',
       ],
+      'export_dependent_settings': [
+        'v8_base',
+      ],
     },
     {
       'target_name': 'mksnapshot',
@@ -424,6 +433,9 @@
           '../../v8/include',
         ],
       },
+      'export_dependent_settings': [
+        'v8_base',
+      ],
     },
     {
       'target_name': 'v8_shell',