There may be an error in the setup or even in one Makefile, building Kent tools is not easy and error prone:
What happens if you run the following command directly:
cc -O -g -o /home/sabreena/bin/x86_64-linux-gnu/fixCr fixCr.o ../../lib/x86_64/jkweb.a /usr/lib/x86_64-linux-gnu/libmysqlclient.a -ldl -lstdc++ -lrt -lpthread /usr/lib/x86_64-linux-gnu/libssl.a -lcrypto ../../htslib/libhts.a -lpng16 -lm -lz
I propose, you use the following machtype
export MACHTYPE=x86_64 # without the linux-gnu suffix
and run the whole process again, including running a make clean and making directories if required.