Generate libsds.so

Hello team , I am cross-compiling sds for i.MX6UL SoC . I could successfully able to build sds-test . But now I have requirement of ".so".
Can anyone kindly suggest me what modifications needs to be done in Makefile to generate .so file .

Error I am getting : arm-poky-linux-gnueabi/bin/ld: cannot find -lsds

Thanks