[Libav-user] undefined reference errors from linker

[Srinath M]

Hi

I am using ffmpeg version 0.11.1 with Ubuntu 10.04
I get the following linker errors when i try to compile a program
tld.c:(.text+0x1a7): undefined reference to `avformat_network_init'
tld.c:(.text+0x1c9): undefined reference to `avformat_open_input'
tld.c:(.text+0x1dc): undefined reference to `avformat_find_stream_info'
tld.c:(.text+0x255): undefined reference to `avcodec_open2'
tld.c:(.text+0x333): undefined reference to `avcodec_decode_video2'
tld.c:(.text+0x525): undefined reference to `avcodec_decode_video2'

Which version of ffmpeg should i be using?
is this a ffmpeg issue in the first place?
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