I'm compiling SpanDSP into a library for use in an app. I'm not a GCC genius, sadly. When compiling, I get no errors. My compile line is:

cc -g -O3 -Wall -I/home/lee/libraries/include -Ic_src -fPIC -shared -lspandsp -ltiff -lm c_src/g722_codec.c -o priv/g722_codec_drv.so

All good. However, on accessing the library, I get symbol errors undefined symbol: g722_encode_init.

I assume I'm making a noob mistake?

Thanks