Fix build with system libvpx....

source/ffmpeg.gyp

Index: source/ffmpeg.gyp
===================================================================
--- source/ffmpeg.gyp	(revision 66783)
+++ source/ffmpeg.gyp	(working copy)
@@ -898,6 +898,16 @@
               },
             }],
 
+            ['use_system_vpx!=0', {
+              'direct_dependent_settings': {
+                'link_settings': {
+                  'libraries': [
+                    '-lvpx',

[scherkus (not reviewing), 2010/11/22 07:17:34]

hmm so we already include -lpvx but that's when use_system_ffmpeg!=0 (see line
415 or so) and we have a section for checking use_system_vpx up there as well

I'm a bit confused as to what this section is accomplishing... when using both
the system ffmpeg *and* the system libvpx?

if that's the case, isn't the system ffmpeg sufficient assuming that it was
built with libvpx?

[fbarchard1, 2010/11/22 20:57:04]

We need -lvpx if building ffmpeg.

+                  ],
+                },
+              },
+            }],
+
             # Add pkg-config result to include path when use_system_ffmpeg!=0
             ['use_system_ffmpeg!=0', {
               'cflags': [