[Ffmpeg-devel] how to compile output_example.c

[Turbo]

The ffmpeg installation automatically compiles output_example.c and 
generates the executable output_example.
But I have made a few changes into the source code and want to compile it 
standalone. How to do it?

I tried doing:-
g++ -Wall -g -o output_example output_example.cpp -I
/usr/local/include/ffmpeg/ -lavformat -lavcodec
-lavutil -lm -lz -ldl

But I am getting these errors:-
undefined reference to `sws_getContext(int, int, int, int, int, int, int, 
void*, void*, double*)'
and
undefined reference to `sws_scale(SwsContext*, unsigned char**, int*, int, 
int, unsigned char**, int*)'

PS: I am new to ffmpeg libraries and am trying to learn and get acquainted 
with ffmpeg's tough api.

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