Configuring ffmpeg...
Broken shell detected.  Trying alternatives.
Trying shell bash
Trying shell ksh
Trying shell /usr/xpg4/bin/sh
No compatible shell script interpreter found.
This configure script requires a POSIX-compatible shell
such as bash or ksh.
THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH.
Instead, install a working POSIX-compatible shell.
Disabling this configure test will create a broken FFmpeg.
This bash version (2.04.0(1)-release) is broken on your platform.
Upgrade to a later version if available.
IOError: [Errno 2] No such file or directory: 'extern/ffmpeg/config.mak':
  File "C:\bf-blender\blender\SConstruct", line 286:
    SConscript(B.root_build_dir+'/extern/SConscript')
  File "C:\Python24\scons-0.96.96\SCons\Script\SConscript.py", line 583:
    return apply(method, args, kw)
  File "C:\Python24\scons-0.96.96\SCons\Script\SConscript.py", line 520:
    return apply(_SConscript, [self.fs,] + files, subst_kw)
  File "C:\Python24\scons-0.96.96\SCons\Script\SConscript.py", line 245:
    exec _file_ in call_stack[-1].globals
  File "C:\bf-blender\blender\extern\SConscript", line 18:
    SConscript(['ffmpeg/SConscript']);
  File "C:\Python24\scons-0.96.96\SCons\Script\SConscript.py", line 583:
    return apply(method, args, kw)
  File "C:\Python24\scons-0.96.96\SCons\Script\SConscript.py", line 520:
    return apply(_SConscript, [self.fs,] + files, subst_kw)
  File "C:\Python24\scons-0.96.96\SCons\Script\SConscript.py", line 245:
    exec _file_ in call_stack[-1].globals
  File "C:\bf-blender\blender\extern\ffmpeg\SConscript", line 99:
    vars = getmakevars([root + '/config.mak', root + "/" + lib + '/Makefile'])
  File "C:\bf-blender\blender\extern\ffmpeg\SConscript", line 75:
    fp = open(filename)