commit a72baecd4dc7b01c0785b481460dde0fbab9a90a
Author: Jan Gerber <j@xiph.org>
Date:   Fri Nov 23 20:21:54 2012 +0100

    only depend on libswresample for local branch
    
    libav does not have libswresample so its not in ubuntu.

diff --git a/SConstruct b/SConstruct
index 90520c3..01d234a 100644
--- a/SConstruct
+++ b/SConstruct
@@ -152,10 +152,10 @@ if not env.GetOption('clean'):
       "libavcodec >= 52.30.0",
       "libpostproc",
       "libswscale",
-      "libswresample",
       "libavutil",
   ]
   if os.path.exists("./ffmpeg"):
+    FFMPEG_LIBS.append('libswresample')
     pkg_path = list(set(map(os.path.dirname, glob('./ffmpeg/*/*.pc'))))
     pkg_path.append(os.environ.get('PKG_CONFIG_PATH', ''))
     os.environ['PKG_CONFIG_PATH'] = ':'.join(pkg_path)